摘要
为提高断裂轮齿焊缝强度,降低焊接修复后焊件不合格率,开展矿山机械齿轮传动设备断裂轮齿的自动化焊接修复方法的设计研究。为了达到最大的延迟冷却速度,并降低冷开裂现象的发生概率,在对断裂轮齿焊接和修复前,按照规范对断裂轮齿中的焊缝进行预热、清洁等处理;使用自动化焊接专机,设计断裂轮齿的栽丝镶齿与齿轮补焊;采取慢速降温或后加热的方法,设计焊接修复后的断裂轮齿冷却处理,防止焊件出现裂纹,完成自动化焊接修复技术的设计。以某地区大型矿山机械设备生产制造单位为例,设计实例应用实验,实验结果证明:该方法可以在提高断裂轮齿焊缝强度的同时,将自动焊接修复加工的不合格率控制在一个相对较低的水平。
In order to improve the weld strength of fractured gear teeth and reduce the unqualified rate of welded parts after welding repair,the design and research of automatic welding repair methods for fractured gear teeth in mining machinery gear transmission equipment are carried out.In order to achieve the maximum delayed cooling rate and reduce the probability of cold cracking,preheating and cleaning of the welds in the fractured gear teeth should be carried out according to specifications before welding and repairing them;Using an automated welding machine,design wire embedding and gear repair welding for broken gear teeth;Adopting slow cooling or post heating methods,designing cooling treatment for fractured gear teeth after welding repair to prevent cracks in the welded parts,and completing the design of automated welding repair technology.Taking a large-scale mining machinery and equipment production and manufacturing unit in a certain region as an example,an application experiment was designed.The experimental results showed that this method can improve the strength of the fractured gear tooth weld seam while controlling the unqualified rate of automatic welding repair processing at a relatively low level.
作者
孙亮
王亮
SUN Liang;WANG Liang(Lanzhou Petrochemical University of Vocational Technology,Lanzhou 730207,China)
出处
《世界有色金属》
2023年第13期52-54,共3页
World Nonferrous Metals
基金
2022年度甘肃省高等学校创新基金项目《“绿色制造”背景下矿用零部件的再制造修复技术与工艺研究》的阶段性研究成果(项目编号:2022B-319)。
关键词
矿山
修复技术
自动化焊接
断裂轮齿
传动设备
机械齿轮
mining
Repair technology
Automated welding
Broken gear teeth
Transmission equipment
Mechanical gear
