Author: wudejian

I received some good news and some bad news this morning.  The good news is that the 8566 can be processed more than 70,000 times; I think that’s quite a lot, so it counts as good news.  However, Mr. Huang isn’t satisfied with 70,000 cycles, so this can only be considered bad news.  Mr. Huang…

We’ve shipped 32 pieces of high-toughness LG hard tool steel. This is used for the ejector pins in cold-forging dies for copper heat sinks. These dies operate on 3,000- to 5,000-metric-ton hydraulic presses, where the ejector pins at the bottom are subjected to immense stress. When using H13 die steel, the four corners tend to…

I was on a business trip all day today and didn’t get home until 8:00 p.m. Although I’m a little tired, I’m in good spirits.  From 10:00 a.m. to 11:30 a.m. and 2:00 p.m. to 6:00 p.m., I spent nearly 8 hours in the client’s hot forging shop, overseeing the mass production of their 8433…

Don’t say that 8433 heat-resistant mold steel is expensive—major clients are willing to buy it. The heat resistance and stability of 8433 are 2–3 times that of H13, with a hardness of 50–54 HRC. It won’t lose its hardness through annealing over its service life. It’s especially worth noting that even if you repair the mold…

I really didn’t expect that 8566 die steel could be used to make kitchen knives. When I saw the 15 kitchen knives the customer had sent back in the workshop, I was still a bit surprised. I truly didn’t expect this customer to use 8566 to make 15 kitchen knives all at once. I’d like to thank…

I saw two re-forged ejector pins in the workshop and wanted to share this with everyone. This is the first time we’ve used high-toughness LG die steel for ejector pins in aluminum extrusion dies, so I thought I’d document this new case.  These two ejector pins were forged from high-toughness LG tool steel. This customer manufactures aluminum extrusion…

This week has been pretty busy—between going out to teach classes and accompanying clients to test molds, I’ve lost a lot of time. Once I’m out and about, I don’t have time to write or take photos. I feel like I’ve fallen behind on my work this week—I haven’t filmed many videos or written much—and…

Mr. Yan asked, “What type of die steel should be used for punches in aluminum stamping to prevent aluminum chips from sticking?”  He is stamping aluminum sheets that are 0.8 to 1.2 thick. Currently, the punches tend to accumulate aluminum chips. He is currently using Cr12MoV and DC53 punches, and even at relatively slow speeds, a…

Mr. Fu asked: “President Wu, could you please advise on the best mold steel material for a bent part that is experiencing surface roughness? (Part material: QSTE550, thickness: 3.0). Surface roughness begins to appear after producing just a few hundred pieces. Currently, the cutting inserts are made of Cr12MOV.”  This is a bent part. During the…

On Monday afternoon, seeing that there were still so many heat-treated hard parts in the workshop ready for shipment put me in a good mood.  We’d already shipped a batch that morning, and with so many left in the afternoon, it meant we had a lot of shipments planned for today. I was especially pleased…

Tungsten steel hot-forging dies are too expensive—what die steel should be used as a substitute? I can tell you now that 8566 die steel, with its high heat resistance, high hardness, and high toughness, is the most suitable replacement.  I saw 17 pieces of 8566 round bar ordered by a nut hot-forging die manufacturer in the…