气缸体斜油孔内漏修复技术
闫萌萌1,2，李松五1,2，王开安1,2，陈维余1,2，王亮1,2
1.内燃机可靠性国家重点实验室，山东 潍坊 261061；2.潍柴动力股份有限公司，山东 潍坊 261061
摘要：为提高废旧气缸体的利用率，结合现有的修复技术，对有斜油孔缺陷的气缸体进行分类统计分析，确定采用镶嵌冷拔钢管的方法对其进行修复。通过气密性检测试验确定斜油孔内漏部位，将原斜油孔改为3段阶梯孔，在内漏部位镶嵌冷拔钢管进行修复。装配完成并平磨后，测量气缸体各尺寸符合图纸要求。将修复后的气缸体装机，进行8 h耐久试验，进行拆检和气密性检测试验，结果表明修复后的气缸体未出现内漏现象。
关键词：斜油孔；内漏；冷拔钢管；气密性检测试验
Repair technology of
internal leakage in inclined oil hole of cylinder block
YAN Mengmeng1,2, LI
Songwu1,2, WANG Kaian1,2, CHEN Weiyu1,2, WANG Liang1,2
1.State Key Laboratory of
Engine Reliability, Weifang 261061, China;2.Weichai Power Co., Ltd., Weifang
261061, China
Abstract：In order to improve the utilization rate of waste
cylinder block, based on the existing repair technology as well as the
classification and statistical analysis of the cylinder block with inclined oil
hole defects, the method of inlaying cold drawn steel pipes is developed. The
internal leakage position of the inclined oil hole is found through the air
tightness test. The original inclined oil hole is changed into a three section
stepped hole, and the internal leakage position is repaired by inlaying a cold
drawn steel pipe. Assembly and flat grinding are used to ensure the dimensions
of the cylinder block to meet the drawing requirements. An 8hour durability
test, disassembly inspection and air tightness test are also carried out. The
results show that the repaired cylinder block has no internal leakage. The
repair technology is conducive to improving the utilization rate of waste
cylinder blocks, reducing costs and saving resources.
Keywords: inclined oil hole；internal leakage；cold drawn steel pipe；air tightness test
|
