期刊文献+
共找到2篇文章
< 1 >
每页显示 20 50 100
钢中球化组织的检验和评级标准简介
1
作者 代玉杰 《热处理》 CAS 2021年第6期56-58,共3页
钢的球化退火是为了获得球状珠光体,以改善切削加工性能或冷变形性能。目前,已经制定了低、中和高碳钢球化组织的评级标准。GB/T38770—2020是低、中碳碳钢和合金钢球化组织的评级标准,其中规定了球化率的计算方法,按球化率确定级别界限... 钢的球化退火是为了获得球状珠光体,以改善切削加工性能或冷变形性能。目前,已经制定了低、中和高碳钢球化组织的评级标准。GB/T38770—2020是低、中碳碳钢和合金钢球化组织的评级标准,其中规定了球化率的计算方法,按球化率确定级别界限,低碳碳钢和低碳合金钢钢球化组织的分级等,比JB/T5074标准更完善。 展开更多
关键词 可变形性能 球化组织 评级
下载PDF
Modeling hot strip rolling process under framework of generalized additive model 被引量:3
2
作者 LI Wei-gang YANG Wei +2 位作者 ZHAO Yun-tao YAN Bao-kang LIU Xiang-hua 《Journal of Central South University》 SCIE EI CAS CSCD 2019年第9期2379-2392,共14页
This research develops a new mathematical modeling method by combining industrial big data and process mechanism analysis under the framework of generalized additive models(GAM)to generate a practical model with gener... This research develops a new mathematical modeling method by combining industrial big data and process mechanism analysis under the framework of generalized additive models(GAM)to generate a practical model with generalization and precision.Specifically,the proposed modeling method includes the following steps.Firstly,the influence factors are screened using mechanism knowledge and data-mining methods.Secondly,the unary GAM without interactions including cleaning the data,building the sub-models,and verifying the sub-models.Subsequently,the interactions between the various factors are explored,and the binary GAM with interactions is constructed.The relationships among the sub-models are analyzed,and the integrated model is built.Finally,based on the proposed modeling method,two prediction models of mechanical property and deformation resistance for hot-rolled strips are established.Industrial actual data verification demonstrates that the new models have good prediction precision,and the mean absolute percentage errors of tensile strength,yield strength and deformation resistance are 2.54%,3.34%and 6.53%,respectively.And experimental results suggest that the proposed method offers a new approach to industrial process modeling. 展开更多
关键词 industrial big data generalized additive model mechanical property prediction deformation resistance prediction
下载PDF
上一页 1 下一页 到第
使用帮助 返回顶部