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分别对表面镀锌和表面磷化螺栓在预涂布螺纹锁固胶(Loc—204胶及GY—560胶)后的装配拧紧系数进行了测试。结果表明,预涂布螺纹锁固胶后,表面磷化螺栓的拧紧系数平均值及散差都显著降低;表面镀锌螺栓的拧紧系数平均值增大但散差无明显变化。
The assembly tightening coefficients of the galvanized and surface phosphated steel bolts after the pre-coated thread locking glue (Loc-204 glue and GY-560 glue) were tested respectively. The results show that the average value and dispersion of the tightening coefficient of the surface phosphating bolt are significantly reduced after the pre-coated thread-locking glue is applied. The mean value of the tightening coefficient of the surface galvanized bolt increases but the dispersion does not change significantly.