Category: blog

 A Douyin user messaged me asking: “I’ve used DC53, CALDIE, and SKH55 for the mandrel in round tube punching. After producing about 5,000 pieces, it broke. What tool steel should I use?” This type of mandrel is used for punching tubular parts. It extends into the tube but is used as a cutting edge, with…

Last night, Mr. Ke, a long-time client I hadn’t been in touch with for years, called to ask about stamping 0.5mm-thick titanium sheets with some stretching involved. He currently uses ASP60 powdered high-speed steel, but after producing just a few thousand parts, burrs start to form, and the die becomes coated with a lot of…

Yesterday, I spoke with a client who constantly felt like he was running a small workshop—as if anyone would look down on him because of his small scale. He came across as lacking in confidence. We must never think this way. To put it bluntly, those of us who run factories are experts in our…

Mr. Chen asked: “We are cutting 1mm-thick magnesium alloy profiles for solar photovoltaic products. Currently, we are using P20 mold steel, but the cutting edge wears out after only about 3,000 cuts. What type of tool steel should we use?”  The cutting edge of a solar PV panel cutter is very thin and requires extremely high…

Netizen Mr. He said that DC53 die steel is used to stretch DC01 iron material. Stretching one product will cause scratches, polishing the mold will make it shiny again, and stretching again will cause scratches. What is the reason for this and what die steel should be used to solve it? Stretching a product with a stretching mold can…

A netizen left a message below the video asking, ‘I am currently using a core pulling board in the plastic film for my PC, which is only 2.4mm thick and prone to eccentricity. Do you have any good material recommendations?’? A 2.4mm thick sheet is prone to deviation, which is caused by insufficient strength. You…

The use of S136 mold steel for injection molding PVC is a material selection error. The mold is bound to rust, and electroplating is also useless. A netizen asked, “I am making PVC hard material, and the S136 I used to use didn’t work. The mold rusted and pitted, and it rusted while polishing. It…

It’s better not to do some business well, and for some people, it’s better to let them continue to hit the southern wall. Mr. Jiang said that 2mm stainless steel punching material will cause PM23 to collapse. Now, using the four copied 856 die steel you mentioned, it will wear out after 10000 punches. The punch will…

I always feel that in the current manufacturing industry, there are more and more users using high-performance tool steel. The second wave of customers who came this afternoon are those who specialize in automotive terminal harness automation equipment. Their selection of terminal machine mold blades is uncertain, but they have chosen LG die steel with high toughness to…

Mr. Li from Dalang, Dongguan, just came to Yuhui Mold Steel for consultation with his product. He is a hot forged SAPH440 iron material, and now the punch has cracked after 1000 hits. What kind of mold steel is used for the punch to resist hitting? Hot forging punches need to withstand high temperatures and…

In the past, when mold steel was fake, there were some similarities, at least the hardness values were similar. But now when mold steel is fake, it can look nothing like anything. Yesterday, I learned about a bizarre case of 8566 forging. Mr. Su made a stainless steel cold heading mold and flattened the annealed…

Zhihu netizens ask: Why are alloy elements added to steel?  There are five main strengthening methods for steel, namely solid solution strengthening with carbon addition, displacement strengthening with alloy addition, forging strengthening, fine grain strengthening, and quenching strengthening with heat treatment. Adding alloying elements is the second largest strengthening method and the main method of…