目的 降低汽车生产成本，提高汽车生产效率。方法 采用平板拉延法测定无机固体润滑处理热镀锌板与普通热镀锌板等在拉延过程中摩擦系数，分析其随时间变化的趋势；采用SEM观察拉延后各钢板的表面形貌差异；采用拉深试验对比无机固体润滑处理热镀锌板与普通热镀锌板的最大拉深力和最大杯高；采用模拟焊接法对比两者的可焊电流区间、可焊电流宽度、最大剪切力和纽扣直径；采用随车挂片的方法对比两者的磷化、电泳性能。即分别评价无机固体润滑处理热镀锌板和普通热镀锌板在冲压、焊接、涂装性能的差异性。结果 冲压性能方面，无机固体润滑处理热镀锌板的摩擦系数较普通热镀锌板降低23%，且微区表面与其他工艺表面的钢板相比几乎无磨损、划伤存在。拉深试验中最大拉深力下降4.5%，最大杯高增加9.5%，无机固体润滑处理热镀锌板具有更优的冲压性能。焊接性能方面，前者较后者的可焊电流区间下降0.6 kA，可焊电流宽度都为1.2 kA，前者的最大剪切力为2.75 kN，后者剪切力为2.6 kN，前者的纽扣直径为5.8 mm，后者的纽扣直径为5.2 mm，焊接性能相差不大。涂装性能方面，前者磷化膜重为3.12 g/mm2，后者磷化膜重为3.09 g/mm2，磷化性能相当，且两者的电泳膜性能试验全部通过。经试冲500次发现，无机固体润滑处理热镀锌板可有效防止模具粘锌。结论 无机固体润滑处理热镀锌板和普通热镀锌板相比，有更优的冲压性能，焊接、涂装性能相当，且能有效改善锌层脱落。而且，无机固体润滑处理热镀锌板替换普通热镀锌板，可降低整车生产成本，提高生产效率。

The work aims to reduce vehicle production costs and improve vehicle productivity. Friction coefficient of inorganic solid lubricated hot galvanized plate (GI-T) and common hot galvanized plate (GI) during drawing process was measured, and its time-dependant variation was analyzed in the method of flat-plate drawing; and difference in surface morphology of each steel sheet after drawing was analyzed; maximum drawing force and maximum cup height of GI-T and GI were compared under flat drawing test; weldable current section, weldable current width, maximum shear force and button diameter of the two were compared in the method of simulated welding; phosphating and electrophoresis properties were detected for samples hung on the BIW. The differences between GI-T and GI in stamping, welding and painting performance were evaluated respectively. As for stamping performance: compared to GI, the friction coefficient of GI-T decreased by 23% and no wear and scratch was observed on the surface. After the drawing test, the maximum drawing force decreased by 4.5% while maximum cup height increased by 9.5%, and the GI-T exhibited better stamping performance. As for welding performance: weldable current range of the former decreased by 0.6 kA while weldable current width was 1.2 kA, respectively, maximum shear force of GI-T and GI was 2.75 kN and 2.6 kN, respectively; and button diameter 5.8 mm and 5.2 mm, respectively; the welding performance was nearly the same. As for coating performance: the phosphate film weight of GI-T and GI was 3.12 g/mm2 and 3.09 g/mm2, respectively. The two were both qualified in electrophoresis membrane test. After 500 times of stamping tests, the GI-T could effectively prevent mold from adhering to zinc. Since GI-T exhibits better stamping performance, equivalent welding and coating performance compared with GI, and can prevent zinc layer from falling off effectively, GI-T can be used to replace GI, which can reduce production cost and improve production efficiency.