The quality standard of automobile large-scale plastic outside part was summarized. The forming mechanism of weldmark was analyzed.
介绍了汽车大型外观塑件的质量标准，分析了塑件熔接痕形成的原因。
2
The research showed that the structure of weldmark was connected with the material formulation, die mould of extrusion machine and parameters of processing technology.
研究发现，熔接痕的结构与材料配方、挤出机机头模具及加工工艺参数均有关系。
3
After I weld in supports for the grates I will be right around that mark.