Hot stamping part of coating hot forming steel and manufacturing method of hot stamping part

The invention discloses a hot stamping part of hot-galvanized layer hot-formed steel and a preparation method of the hot stamping part, and the hot stamping part is characterized in that the precipitation of Mn element in a part matrix is controlled by adjusting hot-forming process parameters, so that the uniformity of components of a surface oxide layer is controlled, and the part has good coating performance. The plating layer of the part comprises the double-phase zinc-iron alloy layer (the zinc-rich phase and the iron-rich phase) and the ultra-thin oxide layer, the corrosion resistance is good, a part preparation process window is wide, the control process is stable, the heating state of the part can be judged through the surface color, and the uniform surface state is achieved. 本发明公开了一种热镀锌层热成形钢的热冲压零部件及其制备方法，通过调整热成形工艺参数，控制零部件基体内Mn元素的析出，进而控制表面氧化层成分均匀，使零部件具有良好涂装性能。本零部件镀层包含双相锌铁合金层(富锌相和富铁相)和极薄氧化层，具有良好的耐腐蚀性能，零部件制备工艺窗口较宽，控制过程稳定，能够通过表面颜色判断零件加热状态，具有均匀表面状态。