As a subversive manufacturing technology, additive manufacturing technology has many technical advantages such as high freedom of design and not limited by complex structure of parts. The application of additive manuf...As a subversive manufacturing technology, additive manufacturing technology has many technical advantages such as high freedom of design and not limited by complex structure of parts. The application of additive manufacturing technology to the charge molding of energetic materials will subvert the traditional manufacturing concept of energetic materials, realize the advanced charge design concept, shorten the research and development time of weapons and equipment, and improve the comprehensive performance of weapons and equipment, which is of great significance for the rapid development of high-tech weapons and equipment. This paper analyzes the research progress of additive manufacturing technology in the field of energetic materials at home and abroad and puts forward some suggestions for future research of this technology. .展开更多
This article mainly discusses the impact of digital technology and service-oriented on the performance of manufacturing enterprises.It first elaborates on the background of the trend of service-oriented manufacturing ...This article mainly discusses the impact of digital technology and service-oriented on the performance of manufacturing enterprises.It first elaborates on the background of the trend of service-oriented manufacturing and the significance of its enterprises.Then,based on the impact of digital technology on the performance of manufacturing enterprises,several practical and feasible measures are proposed,mainly focusing on the long-term layout of service-oriented,shortening the low period,enhancing the competitive awareness of state-owned manufacturing enterprises,improving the driving force transformation,achieving simultaneous progress digitally,configuring digital and service-oriented elements,and eliminating the monopoly of digital resources.Followed by lowering the threshold for private enterprise resource acquisition,promoting financial digital development,breaking the financial dilemma of service-oriented manufacturing,continuously improving the performance level of manufacturing enterprises,and promoting the development of manufacturing enterprises.展开更多
Since the global financial crisis,global value chain(GVC)have been contracting amid the trend toward economic de-globalization.With GVC participation rate in mind as the core indicator of economic de-globalization,in ...Since the global financial crisis,global value chain(GVC)have been contracting amid the trend toward economic de-globalization.With GVC participation rate in mind as the core indicator of economic de-globalization,in this paper we create a multi-country general equilibrium model to characterize the mechanism by which manufacturing localization affects GVC participation rate.Our theoretical derivation shows that changes in the local manufacturing status of final products in various countries directly influence the GVC participation rate of those countries.When the local proportion of a country’s final products reaches a certain level,rising local proportion of intermediate inputs,economic growth below the world average level,and technology progress all cause the country’s GVC participation rate to decline,giving rise to de-globalization at the manufacturing and trade levels.We further provide a comprehensive interpretation based on an empirical test of the deep-seated causes of economic de-globalization in relation to such economic phenomena as increasing trade concentration,the“technology backlash”effect of the new industrial revolution,and economic growth driven by the combined forces of trade protectionism and quantitative easing.展开更多
Based on the traditional re-entrant honeycomb,a novel re-entrant octagon honeycomb(ROH)is proposed.The deformation mode of the honeycomb under quasi-static compression is analyzed by numerical simulation,and the resul...Based on the traditional re-entrant honeycomb,a novel re-entrant octagon honeycomb(ROH)is proposed.The deformation mode of the honeycomb under quasi-static compression is analyzed by numerical simulation,and the results are in good agreement with the experimental ones.The deformation modes,mechanical properties,and energy absorption characteristics of ROH along the impact and perpendicular directions gradient design are investigated under different velocities.The results indicated that the deformation mode of ROH is affected by gradient design along the direction of impact and impact speed.In addition,gradient design along the direction of impact can increase the initial peak stress of ROH and accelerate its densification phase.Gradient design perpendicular to the impact direction can enhance the energy absorption performance of ROH,especially for ROH,with wall thickness increasing from the inside outwards.Compared to ROH with uniform wall thickness at the same relative density,ROH with a gradient design can increase the plateau stress by over half.With the elevation of impact velocity,the plateau stress and specific energy absorption exhibit an upward trend,aligning with the dynamic performance pattern observed in conventional honeycombs.The results can be used as a reference for the design and application of honeycomb and provide a new idea for developing more efficient and reliable energy-absorbing materials.展开更多
In today’s rapidly developing modern society,automobiles,as an important part of transportation and industrial fields,play a pivotal role.With the improvement of people’s living standards and the increase in traffic...In today’s rapidly developing modern society,automobiles,as an important part of transportation and industrial fields,play a pivotal role.With the improvement of people’s living standards and the increase in traffic demand,the automobile manufacturing industry has been continuously developing and growing globally.However,to cope with increasingly fierce market competition and ever-changing consumer demands,the automobile manufacturing industry is also facing the challenges of improving production efficiency,reducing costs,and improving product quality.In this context,automation technology has gradually become a major trend in the automobile manufacturing industry.As an important support of modern industry,automation technology has shown great application potential in many fields.From industrial production to daily life,automation technology can be seen everywhere.In the field of manufacturing,especially in automobile manufacturing,the application of automation technology is getting more and more attention.Automated production lines,intelligent robots,and automated warehousing systems have all changed the face of automobile manufacturing to varying degrees,bringing companies higher efficiency,more stable quality,and greater competitive advantages.The application trend of this automation technology in various fields not only meets the needs of modern industry for efficient,precise,and sustainable development but also provides new ideas and paths for the future development of the automobile manufacturing industry.展开更多
With the rapid development of the aviation industry,the development of intelligent manufacturing equipment represented by composite robots has been paid close attention by the aviation industry.Based on the analysis o...With the rapid development of the aviation industry,the development of intelligent manufacturing equipment represented by composite robots has been paid close attention by the aviation industry.Based on the analysis of the background and main structure function of composite robots,this paper focuses on the analysis of key technologies such as composite robot hardware design,visual sensing and planning system,integrated control of‘hands,feet,and eyes',multi-robot collaborative operation,and safety.The typical applications of composite robots in aviation intelligent manufacturing such as automatic drilling and connection of aircraft,aircraft surface spraying and finishing,parts handling,aircraft measurement,and inspection are presented.The development trends such as standardization of composite robots,integration of‘5G+cloud computing+AI',and fusion of intelligent sensors are proposed.展开更多
Based on panel data from 16 cities in Shandong Province from 2013 to 2022,and grounded in theoretical analysis,this paper constructs a benchmark regression model,a mediating effect model,and a heterogeneity test for e...Based on panel data from 16 cities in Shandong Province from 2013 to 2022,and grounded in theoretical analysis,this paper constructs a benchmark regression model,a mediating effect model,and a heterogeneity test for empirical analysis.The results show that:(1)the digital economy has a significant positive effect on promoting the transformation and upgrading of the manufacturing industry in Shandong Province;(2)the digital economy can drive the transformation and upgrading of the manufacturing industry through technological innovation;and(3)the impact of the digital economy on the transformation and upgrading of the manufacturing industry in Shandong Province is evidently heterogeneous.展开更多
Since domestic corporations firstly introduced into and implemented the Advanced Manufacturing Technology (AMT),how to scientifically evaluate the implementation effects of AMT has been an urgent problem.Through the r...Since domestic corporations firstly introduced into and implemented the Advanced Manufacturing Technology (AMT),how to scientifically evaluate the implementation effects of AMT has been an urgent problem.Through the review of for- eign relative studies,this paper constructs an indicator system used to evaluate the implementation effects of AMT.Operational performance,Organizational or managerial performance,Satisfactory performance,and Competitive performance are indicators of first level in the system,and 19 indicators of second level have been selected to estimate the implementation effects of AMT.In this study,a model based on Minkowski distance discriminance to select the specialists’ opinion was designed to evaluate the indica- tor system,and the measure’s validity and practicability was proved by a case study to a diesel engine factory.展开更多
This paper described progress and development on the welding technology and vehicle manufacture during last decade, which promoted the technical progress for development and creation a considerable variety of high qua...This paper described progress and development on the welding technology and vehicle manufacture during last decade, which promoted the technical progress for development and creation a considerable variety of high quality products in railway locomotive and rolling stock industry.展开更多
Advanced manufacturing technology(AMT)is pivotal for firms to gain manufacturing performance and com- petitive advantage.Job characteristics,as a kind of important factors affecting the implementation effects of AMT ,...Advanced manufacturing technology(AMT)is pivotal for firms to gain manufacturing performance and com- petitive advantage.Job characteristics,as a kind of important factors affecting the implementation effects of AMT ,have become the focus in the field of academy.Based on a literature review,this study refines the implementation effects of AMT into opera- tional performance,satisfaction and competitive performance,and reclassifies the job characteristics of AMT into job autonomy, job responsibility,job complexity and job significance.With a large sample of 307 equipment-manufacturing firms selected from the 2005 China International Equipment and Manufacturing Exposition,linear structural equation analysis(LIEREL)is per- formed to examine the relationships between job characteristics and the implementation effects of AMT.The results show that job re- sponsibility and job significance have positive effects on satisfaction;satisfaction is positively correlated with operational perfor- mance;operational performance positively affects competitive performance.The findings provide the guide for firms to improve satisfaction,achieve higher operational performance and further gain higher competitive by reasonable job redesign.展开更多
The concept of machine vision based manufacturing technology is proposed first,and the key algorithms used in two-dimensional and three-dimensional machining are discussed in detail.Machining information can be derive...The concept of machine vision based manufacturing technology is proposed first,and the key algorithms used in two-dimensional and three-dimensional machining are discussed in detail.Machining information can be derived from the binary images and gray picture after processing and transforming the picture.Contour and the parallel cutting method about two-dimen- sional machining are proposed.Polygon approximating algorithm is used to cutting the profile of the workpiece.Fill Scanning al- gorithm used to machining inner part of a pocket.The improved Shape From Shading method with adaptive pre-processing is adopted to reconstruct the three-dimensional model.Layer cutting method is adopted for three-dimensional machining.The tool path is then gotten from the model,and NC code is formed subsequently.The model can be machined conveniently by the lathe, milling machine or engraver.Some examples are given to demonstrate the results of lmageCAM system,which is developed by the author to implement the algorithms previously mentioned.展开更多
Digital manufacturing technology can be used in optical field to solve many problems caused by traditional machining. According to the characters of digital manufacturing and the practical applications of ultra-precis...Digital manufacturing technology can be used in optical field to solve many problems caused by traditional machining. According to the characters of digital manufacturing and the practical applications of ultra-precision machining,the process of digital ultra-precision machining and its technical contents were presented in this paper. In the conclusions,it was stated that the digitalization of ultra-precision machining will be an economical and efficient way for the production of new sorts of optical workpieces.展开更多
By vermicularizing agent containing RE (REFeSi), austempered vermicular graphite cast iron (AVGCI) with RE can be produced with austempered treatment. The process of austenitization of vermicular graphite cast iron (V...By vermicularizing agent containing RE (REFeSi), austempered vermicular graphite cast iron (AVGCI) with RE can be produced with austempered treatment. The process of austenitization of vermicular graphite cast iron (VGCI) with RE and the transformation of AVGCI with RE with temperature increasing were studied by SEM with heating device. Properties of AVGCI with RE, such as tensile strength, elongation, impact toughness, hardness, thermal fatigue resistance, thermal expansive coefficient and weight increasing by oxidation were measured by electron universal testing machine with heating device. Experimental results indicate that AVGCI with RE possesses good comprehensive properties at room and elevated temperatures.展开更多
Today the ASEAN Pharmaceutical manufacturing companies are still focusing on their local countries,with the exception of a fewlarge regionals who are already and increasingly looking and capable to export to the outsi...Today the ASEAN Pharmaceutical manufacturing companies are still focusing on their local countries,with the exception of a fewlarge regionals who are already and increasingly looking and capable to export to the outside markets such as Europe.This means that the majority of companies producing medicinal products to higher regulatory standards have less international experience/exposure in handling the GMP requirements demanded by PIC/s[1].In addition most of their processes are manual with legacy practices,and mostly the data and controls are in paper with a very high amount of data made with pen and paper on numerous human reviews of documentation mainly to assess the data is complete but not for accuracy of the data at the time that action could be taken—data integrity on paper has been shownto be highly questionable.展开更多
With the rapid development of global transportation track equipment, the running speed of modern rail transit equipment keeps refreshing records. High-speed EMUs, inter-city EMUs and urban rail vehicles have become th...With the rapid development of global transportation track equipment, the running speed of modern rail transit equipment keeps refreshing records. High-speed EMUs, inter-city EMUs and urban rail vehicles have become the main types of domestic passenger transport vehicles, especially the lightweight production and manufacture of high-speed EMUs and urban rail vehicles, which are the main topics of railway transport modernization research and discussion. Track manufacturing is a successful example of China's industrial transformation and strategic restructuring through systematic innovation since the reform and opening up. In this paper, the application of some advanced manufacturing technologies in the track equipment manufacturing industry and the opportunities and challenges faced by the whole track equipment manufacturing industry were mainly studied, hoping to provide some help for the development of the track equipment manufacturing industry in China.展开更多
Manufacturing of a product is constituted of the va ri ous attributes such as quality, cost, performance, and time to market. Manufactu ring can also be understood as the entire product realization process, from spec ...Manufacturing of a product is constituted of the va ri ous attributes such as quality, cost, performance, and time to market. Manufactu ring can also be understood as the entire product realization process, from spec ification through design and production to marketing and distribution. The induc tion of Information Technology (IT) in manufacturing includes the hardware that computes and communicates, the software that provides data, knowledge, and infor mation while at the same time controlling the hardware, and the interfaces betwe en computers and the tools and machines on the shop floor. The manufacturing pro cess utilizes IT in the design of products and processes, production, and manufa cturing-related business practices. IT applications applied to manufacturing helps in rapid shifts in production fro m one product to another, faster implementation of new concepts in products, fas ter delivery of products to customers, full utilization of capital and human res ources, streamlining of operations to focus on essential business needs, and eli mination of unnecessary or wasteful activities. IT can be used to meet a range of needs of manufacturing decision makers. It can be said that IT is an enabler and facilitator of radical change to culture of manufacturing which is highly co nservative for many good reasons. With increasing global competition, applications of global information technolog y is giving manufacturing unit an opportunity to increase control and enhance co ordination, while opening doors to new global markets and businesses. In some st udies conducted it ahs been shown that how information technology can produce pr oductivity gains and job losses in specific areas, whereas dynamic stability was also achieved through IT in some cases. In a study of an industry the IT has cu t manufacturers cost from eProcurement to web based supply chain management and after sales service. IT has certainly revolutionized the manufacturing and the i ndustries have completely redefined their business by switching over to World Wi de Web. This paper, attempts to review the significant advances and practical applicatio ns of information technology in the field of manufacturing.展开更多
The advanced manufacturing technology of mechanical products features interaction, and high simulation, etc. In this paper, a digital geometry model for the processing is established with the aid of computer technolog...The advanced manufacturing technology of mechanical products features interaction, and high simulation, etc. In this paper, a digital geometry model for the processing is established with the aid of computer technology, so that the needs of machinery manufacturing production and precision machining can be fulfilled, and also the simulation, validation, comparison, and optimization of many plans can be implemented for ultimately finding out an optimal processing method and realizing the benefit of low cost and high quality. From two different levels of activity and parts, the configuration principle of mechanical products＇ advanced manufacturing technology is defined. Therefore, the advanced manufacturing technology for customizing different products can be derived, and also the reuse of different types of parts is realized. Finally, this is verified with an example.展开更多
On the basis of the definition of technological innovation and efficiency,based on the DEA method,this paper takes the panel data of 20 listed companies in China's machinery manufacturing industry from 2011 to 201...On the basis of the definition of technological innovation and efficiency,based on the DEA method,this paper takes the panel data of 20 listed companies in China's machinery manufacturing industry from 2011 to 2015 as samples,evaluating the technological innovation efficiency of listed companies in China's machinery manufacturing industry.Finally,it sums up and puts forward effective countermeasures to improve the technological innovation of listed companies in China's machinery manufacturing industry.It is hoped that it will play a guiding role in the technological innovation activities of listed companies in China's machinery manufacturing industry.展开更多
文摘As a subversive manufacturing technology, additive manufacturing technology has many technical advantages such as high freedom of design and not limited by complex structure of parts. The application of additive manufacturing technology to the charge molding of energetic materials will subvert the traditional manufacturing concept of energetic materials, realize the advanced charge design concept, shorten the research and development time of weapons and equipment, and improve the comprehensive performance of weapons and equipment, which is of great significance for the rapid development of high-tech weapons and equipment. This paper analyzes the research progress of additive manufacturing technology in the field of energetic materials at home and abroad and puts forward some suggestions for future research of this technology. .
文摘This article mainly discusses the impact of digital technology and service-oriented on the performance of manufacturing enterprises.It first elaborates on the background of the trend of service-oriented manufacturing and the significance of its enterprises.Then,based on the impact of digital technology on the performance of manufacturing enterprises,several practical and feasible measures are proposed,mainly focusing on the long-term layout of service-oriented,shortening the low period,enhancing the competitive awareness of state-owned manufacturing enterprises,improving the driving force transformation,achieving simultaneous progress digitally,configuring digital and service-oriented elements,and eliminating the monopoly of digital resources.Followed by lowering the threshold for private enterprise resource acquisition,promoting financial digital development,breaking the financial dilemma of service-oriented manufacturing,continuously improving the performance level of manufacturing enterprises,and promoting the development of manufacturing enterprises.
基金the major project under the National Social Science Fund of China (NSSFC)“Advancing New-Type Industrialization and the Optimization and Upgrade of the Economic System” for interpreting the spirit of the Fifth Plenary Session of the 19th Communist Party of China (CPC) Central Committee (21ZDA021)and the Innovation Project of the Chinese Academy of Social Sciences (CASS),“Study on the High-Quality Development of Emerging Industries.”
文摘Since the global financial crisis,global value chain(GVC)have been contracting amid the trend toward economic de-globalization.With GVC participation rate in mind as the core indicator of economic de-globalization,in this paper we create a multi-country general equilibrium model to characterize the mechanism by which manufacturing localization affects GVC participation rate.Our theoretical derivation shows that changes in the local manufacturing status of final products in various countries directly influence the GVC participation rate of those countries.When the local proportion of a country’s final products reaches a certain level,rising local proportion of intermediate inputs,economic growth below the world average level,and technology progress all cause the country’s GVC participation rate to decline,giving rise to de-globalization at the manufacturing and trade levels.We further provide a comprehensive interpretation based on an empirical test of the deep-seated causes of economic de-globalization in relation to such economic phenomena as increasing trade concentration,the“technology backlash”effect of the new industrial revolution,and economic growth driven by the combined forces of trade protectionism and quantitative easing.
基金This work is supported by the National Natural Science Foundation of China(No.11902232).
文摘Based on the traditional re-entrant honeycomb,a novel re-entrant octagon honeycomb(ROH)is proposed.The deformation mode of the honeycomb under quasi-static compression is analyzed by numerical simulation,and the results are in good agreement with the experimental ones.The deformation modes,mechanical properties,and energy absorption characteristics of ROH along the impact and perpendicular directions gradient design are investigated under different velocities.The results indicated that the deformation mode of ROH is affected by gradient design along the direction of impact and impact speed.In addition,gradient design along the direction of impact can increase the initial peak stress of ROH and accelerate its densification phase.Gradient design perpendicular to the impact direction can enhance the energy absorption performance of ROH,especially for ROH,with wall thickness increasing from the inside outwards.Compared to ROH with uniform wall thickness at the same relative density,ROH with a gradient design can increase the plateau stress by over half.With the elevation of impact velocity,the plateau stress and specific energy absorption exhibit an upward trend,aligning with the dynamic performance pattern observed in conventional honeycombs.The results can be used as a reference for the design and application of honeycomb and provide a new idea for developing more efficient and reliable energy-absorbing materials.
文摘In today’s rapidly developing modern society,automobiles,as an important part of transportation and industrial fields,play a pivotal role.With the improvement of people’s living standards and the increase in traffic demand,the automobile manufacturing industry has been continuously developing and growing globally.However,to cope with increasingly fierce market competition and ever-changing consumer demands,the automobile manufacturing industry is also facing the challenges of improving production efficiency,reducing costs,and improving product quality.In this context,automation technology has gradually become a major trend in the automobile manufacturing industry.As an important support of modern industry,automation technology has shown great application potential in many fields.From industrial production to daily life,automation technology can be seen everywhere.In the field of manufacturing,especially in automobile manufacturing,the application of automation technology is getting more and more attention.Automated production lines,intelligent robots,and automated warehousing systems have all changed the face of automobile manufacturing to varying degrees,bringing companies higher efficiency,more stable quality,and greater competitive advantages.The application trend of this automation technology in various fields not only meets the needs of modern industry for efficient,precise,and sustainable development but also provides new ideas and paths for the future development of the automobile manufacturing industry.
基金the National Key Research and Development Program of China(No.2022YFB4700400)。
文摘With the rapid development of the aviation industry,the development of intelligent manufacturing equipment represented by composite robots has been paid close attention by the aviation industry.Based on the analysis of the background and main structure function of composite robots,this paper focuses on the analysis of key technologies such as composite robot hardware design,visual sensing and planning system,integrated control of‘hands,feet,and eyes',multi-robot collaborative operation,and safety.The typical applications of composite robots in aviation intelligent manufacturing such as automatic drilling and connection of aircraft,aircraft surface spraying and finishing,parts handling,aircraft measurement,and inspection are presented.The development trends such as standardization of composite robots,integration of‘5G+cloud computing+AI',and fusion of intelligent sensors are proposed.
文摘Based on panel data from 16 cities in Shandong Province from 2013 to 2022,and grounded in theoretical analysis,this paper constructs a benchmark regression model,a mediating effect model,and a heterogeneity test for empirical analysis.The results show that:(1)the digital economy has a significant positive effect on promoting the transformation and upgrading of the manufacturing industry in Shandong Province;(2)the digital economy can drive the transformation and upgrading of the manufacturing industry through technological innovation;and(3)the impact of the digital economy on the transformation and upgrading of the manufacturing industry in Shandong Province is evidently heterogeneous.
文摘Since domestic corporations firstly introduced into and implemented the Advanced Manufacturing Technology (AMT),how to scientifically evaluate the implementation effects of AMT has been an urgent problem.Through the review of for- eign relative studies,this paper constructs an indicator system used to evaluate the implementation effects of AMT.Operational performance,Organizational or managerial performance,Satisfactory performance,and Competitive performance are indicators of first level in the system,and 19 indicators of second level have been selected to estimate the implementation effects of AMT.In this study,a model based on Minkowski distance discriminance to select the specialists’ opinion was designed to evaluate the indica- tor system,and the measure’s validity and practicability was proved by a case study to a diesel engine factory.
文摘This paper described progress and development on the welding technology and vehicle manufacture during last decade, which promoted the technical progress for development and creation a considerable variety of high quality products in railway locomotive and rolling stock industry.
文摘Advanced manufacturing technology(AMT)is pivotal for firms to gain manufacturing performance and com- petitive advantage.Job characteristics,as a kind of important factors affecting the implementation effects of AMT ,have become the focus in the field of academy.Based on a literature review,this study refines the implementation effects of AMT into opera- tional performance,satisfaction and competitive performance,and reclassifies the job characteristics of AMT into job autonomy, job responsibility,job complexity and job significance.With a large sample of 307 equipment-manufacturing firms selected from the 2005 China International Equipment and Manufacturing Exposition,linear structural equation analysis(LIEREL)is per- formed to examine the relationships between job characteristics and the implementation effects of AMT.The results show that job re- sponsibility and job significance have positive effects on satisfaction;satisfaction is positively correlated with operational perfor- mance;operational performance positively affects competitive performance.The findings provide the guide for firms to improve satisfaction,achieve higher operational performance and further gain higher competitive by reasonable job redesign.
基金Funded by NSF of Hebei Education Department,China(Grant # 2004125)
文摘The concept of machine vision based manufacturing technology is proposed first,and the key algorithms used in two-dimensional and three-dimensional machining are discussed in detail.Machining information can be derived from the binary images and gray picture after processing and transforming the picture.Contour and the parallel cutting method about two-dimen- sional machining are proposed.Polygon approximating algorithm is used to cutting the profile of the workpiece.Fill Scanning al- gorithm used to machining inner part of a pocket.The improved Shape From Shading method with adaptive pre-processing is adopted to reconstruct the three-dimensional model.Layer cutting method is adopted for three-dimensional machining.The tool path is then gotten from the model,and NC code is formed subsequently.The model can be machined conveniently by the lathe, milling machine or engraver.Some examples are given to demonstrate the results of lmageCAM system,which is developed by the author to implement the algorithms previously mentioned.
文摘Digital manufacturing technology can be used in optical field to solve many problems caused by traditional machining. According to the characters of digital manufacturing and the practical applications of ultra-precision machining,the process of digital ultra-precision machining and its technical contents were presented in this paper. In the conclusions,it was stated that the digitalization of ultra-precision machining will be an economical and efficient way for the production of new sorts of optical workpieces.
文摘By vermicularizing agent containing RE (REFeSi), austempered vermicular graphite cast iron (AVGCI) with RE can be produced with austempered treatment. The process of austenitization of vermicular graphite cast iron (VGCI) with RE and the transformation of AVGCI with RE with temperature increasing were studied by SEM with heating device. Properties of AVGCI with RE, such as tensile strength, elongation, impact toughness, hardness, thermal fatigue resistance, thermal expansive coefficient and weight increasing by oxidation were measured by electron universal testing machine with heating device. Experimental results indicate that AVGCI with RE possesses good comprehensive properties at room and elevated temperatures.
文摘Today the ASEAN Pharmaceutical manufacturing companies are still focusing on their local countries,with the exception of a fewlarge regionals who are already and increasingly looking and capable to export to the outside markets such as Europe.This means that the majority of companies producing medicinal products to higher regulatory standards have less international experience/exposure in handling the GMP requirements demanded by PIC/s[1].In addition most of their processes are manual with legacy practices,and mostly the data and controls are in paper with a very high amount of data made with pen and paper on numerous human reviews of documentation mainly to assess the data is complete but not for accuracy of the data at the time that action could be taken—data integrity on paper has been shownto be highly questionable.
文摘With the rapid development of global transportation track equipment, the running speed of modern rail transit equipment keeps refreshing records. High-speed EMUs, inter-city EMUs and urban rail vehicles have become the main types of domestic passenger transport vehicles, especially the lightweight production and manufacture of high-speed EMUs and urban rail vehicles, which are the main topics of railway transport modernization research and discussion. Track manufacturing is a successful example of China's industrial transformation and strategic restructuring through systematic innovation since the reform and opening up. In this paper, the application of some advanced manufacturing technologies in the track equipment manufacturing industry and the opportunities and challenges faced by the whole track equipment manufacturing industry were mainly studied, hoping to provide some help for the development of the track equipment manufacturing industry in China.
文摘Manufacturing of a product is constituted of the va ri ous attributes such as quality, cost, performance, and time to market. Manufactu ring can also be understood as the entire product realization process, from spec ification through design and production to marketing and distribution. The induc tion of Information Technology (IT) in manufacturing includes the hardware that computes and communicates, the software that provides data, knowledge, and infor mation while at the same time controlling the hardware, and the interfaces betwe en computers and the tools and machines on the shop floor. The manufacturing pro cess utilizes IT in the design of products and processes, production, and manufa cturing-related business practices. IT applications applied to manufacturing helps in rapid shifts in production fro m one product to another, faster implementation of new concepts in products, fas ter delivery of products to customers, full utilization of capital and human res ources, streamlining of operations to focus on essential business needs, and eli mination of unnecessary or wasteful activities. IT can be used to meet a range of needs of manufacturing decision makers. It can be said that IT is an enabler and facilitator of radical change to culture of manufacturing which is highly co nservative for many good reasons. With increasing global competition, applications of global information technolog y is giving manufacturing unit an opportunity to increase control and enhance co ordination, while opening doors to new global markets and businesses. In some st udies conducted it ahs been shown that how information technology can produce pr oductivity gains and job losses in specific areas, whereas dynamic stability was also achieved through IT in some cases. In a study of an industry the IT has cu t manufacturers cost from eProcurement to web based supply chain management and after sales service. IT has certainly revolutionized the manufacturing and the i ndustries have completely redefined their business by switching over to World Wi de Web. This paper, attempts to review the significant advances and practical applicatio ns of information technology in the field of manufacturing.
文摘The advanced manufacturing technology of mechanical products features interaction, and high simulation, etc. In this paper, a digital geometry model for the processing is established with the aid of computer technology, so that the needs of machinery manufacturing production and precision machining can be fulfilled, and also the simulation, validation, comparison, and optimization of many plans can be implemented for ultimately finding out an optimal processing method and realizing the benefit of low cost and high quality. From two different levels of activity and parts, the configuration principle of mechanical products＇ advanced manufacturing technology is defined. Therefore, the advanced manufacturing technology for customizing different products can be derived, and also the reuse of different types of parts is realized. Finally, this is verified with an example.
文摘On the basis of the definition of technological innovation and efficiency,based on the DEA method,this paper takes the panel data of 20 listed companies in China's machinery manufacturing industry from 2011 to 2015 as samples,evaluating the technological innovation efficiency of listed companies in China's machinery manufacturing industry.Finally,it sums up and puts forward effective countermeasures to improve the technological innovation of listed companies in China's machinery manufacturing industry.It is hoped that it will play a guiding role in the technological innovation activities of listed companies in China's machinery manufacturing industry.
