Question from a netizen in the 286th live broadcast room: What kind of mold material is used to punch the 4.2mm hole with 7mm thick 10th steel?
Punch a 4.2 hole on a 7mm thick 10 gauge steel, which has a punching aperture smaller than the plate thickness and a punching ratio of less than 1:1. This requires extremely high toughness for the punching needle, and most punching needles are prone to breakage.
Nowadays, there are more and more cruel working conditions where the punching hole diameter is smaller than the plate thickness. Mr. Zhan just asked, Hello boss, what material is used for punching the 4mm hole on an 8mm thick hot plate with a punching needle?
For these harsh working conditions where the punching hole diameter is smaller than the plate thickness, the punching needle must be made of 8566 anti collapse steel, otherwise it is easy to break.
Mr. He said, ‘I used 8566 die steel to punch a 4.5 hole in an 8mm round rod, and succeeded!’!
You should know that the 4.5 hole mentioned by Mr. He was originally drilled manually with a drilling machine, but there are over one million holes per year that can be drilled manually. The cost is very high, efficient, and low, and other die steels can be used. However, the punching needle needs to break, and stamping cannot be achieved.
But now 8566 die steel has helped him achieve efficient stamping production, which has increased efficiency, reduced labor costs, lower costs, and better quality assurance. This is a win-win situation, so I can understand Mr. He’s excitement.
The reason why 8566 needle punching is continuous is because 8566 has good anti cracking performance. 8566 is a proprietary anti collapse steel developed by Yuhui tool Steel, which mainly solves the problem of mold cracking; It has accumulated over a thousand cases in 5 working conditions, 6 major materials, and 7 major fields of stamping. Its anti cracking performance is 4 times that of high-speed steel SKH-9, 2 times that of D2, and its hardness is 58-60HRC. It can solve the cracking problem that high hardness die steels such as D2, DC53, and SKH-9 cannot solve.
Especially in harsh working conditions such as stainless steel stamping, sharp corner stamping, narrow edge stamping, stamping aperture smaller than plate thickness, and stamping ratio less than 1:1, the cracking that cannot be solved by conventional die steel is solved by using 8566 anti collapse steel.
So, when the netizen asked about what kind of mold material to use for the 4.2mm hole and 7mm thick 10mm steel, 8566 dei steel must be used, otherwise the punching needle will break and production will be impossible, resulting in low efficiency. The use of 8566 die steel for punch cracking is a double-edged sword in both old and new societies.
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