The quality standard of automobile large-scale plastic outside part was summarized. The forming mechanism of weld mark 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。
The research showed that the structure of weld mark 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。
After I weld in supports for the grates I will be right around that mark.
焊缝后，我在支持为栅，我会的权利，前后马克。
Next, place an 31 inch mark on each of the seat frame legs measured as shown above. Again, this mark should be placed on top of the seat frame, as not to interfere with the weld.
下一步，放置座架腿的31英寸在每个测量标志如上所示。同样，这标志应放在框架顶部的座位，为了不干扰焊接。
Contact mark. Intermittent marks adjacent to the weld line resulting from the electrical contact between the electrodes supplying the welding current and the pipe surface.
触点痕。由于供焊接电流的电极与管子表面间的电接触，致使在焊缝线附近产生不连续痕迹。
This mark should be placed on top of the seat frame, as not to interfere with the weld.
这标志应该是放在上面的座架，为了不干扰焊接。
Again, this mark should be placed on top of the seat frame, as not to interfere with the weld.
同样，这标志应放在框架顶部的座位，为了不干扰焊接。
Too high switch point: empty part, weld line, sink mark, and small.
转压点太高：产品充模不足，熔接痕，凹陷，尺寸偏小等。
Too high switch point: empty part, weld line, sink mark, and small.
转压点太高：产品充模不足，熔接痕，凹陷，尺寸偏小等。
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