摘要
用摩擦系数试验机测试了4种表面处理状态(镀锌不上油、镀锌上油、磷化上油、发黑(氧化)上油)的螺栓摩擦系数与轴向力之间的关系。试验结果表明:不同表面处理状态螺栓的摩擦系数不同,相同扭矩下的轴向力相差很大。将试验结果应用于汽车螺栓装配中,解决了松脱、断裂的工程问题。
The relationship between friction coefficient and axial force of the bolts at four kinds of surface treatment condition （galvanized unoiled, galvanized oiled, phosphated oiled, black oxide oiled ） is tested by the frictional coefficient testing machine. The result shows that the frictional coefficient of bolt is differ- ent at different surface treatment condition, and axial force also varies greatly under the same torque. Ap- plying experimental results to assembly of automobile bolt, engineering problems of loosening and fracture can be solved.
出处
《热处理技术与装备》
2015年第3期20-23,共4页
Heat Treatment Technology and Equipment
关键词
摩擦系数
轴向力
松脱
断裂
汽车螺栓
frictional coefficient
axial force
loosening,
fracture
automobile bolt
