摘要
柱塞滑靴组件的收口质量对柱塞泵的性能和寿命至关重要。通过对现有收口工艺全流程进行评估,针对存在的问题提出了改进方案。改进的工艺具有以下特点:在结构设计方面,通过优化过渡圆角,降低壁厚差异,有效解决了收口抗疲劳裂纹问题;在热加工方面,根据渗碳层厚度和硬度预留加工余量,通过渗碳机加工后进行整体淬火,为后续收口提供了良好的塑变流线;在冷加工方面,通过精确控制收口模内腔粗糙度、内腔与滑靴零件外形公差、滑靴球窝球径及其清洁度、柱塞球头公差和球形度、滚松时间和起始位置等关键因素来实现工艺优化。并对使用改进方案加工后的柱塞滑靴组件进行了详细测量,结果表明柱塞滑靴组件正包收口时均无裂纹,轴向间隙不大于0.06,摆角不小于20°,拉脱力在6500 N以上,满足收口技术指标要求。
The closure quality of the plunger shoe component is crucial for the performance and lifespan of the plunger pump.An evaluation of the existing closure process was conducted,and improvement solutions were proposed to address the identified issues.The improved process had the following characteristics.In terms of structural design,fatigue crack resistance issues in the closure were effectively resolved through optimized transition fillets and reduced wall thickness differences.In terms of heat treatment,machining allowances were reserved based on carburizing layer thickness and hardness,followed by overall quenching,providing favorable plastic deformation flow lines for subsequent closure.In terms of cold working,process optimization was achieved by precise control of key factors such as roughness of the closure die cavity,tolerances between the die cavity and shoe component,ball socket diameter and cleanliness,plunger ball head tolerances and sphericity,rolling clearance time and starting position.Detailed measurements of the plunger shoe component processed with the improved solution were conducted.The results showed that no cracks were found in the positive package closure of the plunger shoe component,with an axial clearance of not greater than 0.06,a swing angle not less than 20°,and a pull-off force above 6500 N,meeting the technical requirements for closure.
作者
韦芬
龙运伟
李冀霞
赵忠勇
王军
周可平
WEI Fen;LONG Yunwei;LI Jixia;ZHAO Zhongyong;WANG Jun;ZHOU Keping(AECC Guizhou Honglin Aviation Power Control Technology Co.,Ltd.,Guiyang 550000,Guizhou,China)
出处
《热处理技术与装备》
2024年第3期21-28,共8页
Heat Treatment Technology and Equipment
关键词
柱塞滑靴组件
收口技术
全流程设计
性能提升
plunger shoe component
closure technique
full-process design
performance improvement
