随着航空工业的发展,对起落架零件的选材要求强度高,重量轻,体积小。由于强度高,抗疲劳和抗应力腐蚀破坏是个大问题,表面完整性成为当前研究的课题。影响零件疲劳强度的因素很多,其中模锻件的氧化脱碳较为突出,国外有人做过试验,锻造零件表面和机加至▽5的零件表面 With the development of aviation industry, the selection of landing gear parts requires high strength, light weight and small size. Due to the high strength, anti-fatigue and anti-stress corrosion damage is a big problem, the surface integrity has become the subject of current research. Factors affecting the fatigue strength of many factors, including die forging oxidation and decarbonization is more prominent, some people have done tests, forging parts surface and machined to ▽ 5 parts surface