In the 285th live broadcast room, a netizen asked, what kind of die steel should be used to make 1mm thick 304 stainless steel stretched to 4mm high?
Stainless steel is easy to draw when stretched. It is necessary to choose a non-stick mold material with good smelting quality and no microscopic cracks invisible to the naked eye. It must also take into account high wear resistance. Regardless of cost, carbide tungsten steel or powdered high-speed steel PM23 is definitely better.
If the mold material cost is too high and there are already successful cases, I recommend Yuhui SKH51 high-speed steel with hardness HRC62-64. According to feedback from old customer Mr. Wan, Yuhui SKH51 can stretch 1mm thick stainless steel with a drawing height of 10mm. Currently, 20,000 pieces have been stretched and no problem has been found. Other die steels have been strained for a long time.
Only those who have similar working conditions and successful case experience can recommend it.
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