Category: blog

For hot forging of 35 steel heated to 1100°C, the heat-resistant steel 8433 increased die life from 5,000 to 10,000 cycles. This good news was shared with me yesterday by Mr. Wang, who has been using 8433 for over two years.  Mr. Wang specializes in hot forging and stamping of 35 steel, a process with relatively…

Although 8566 anti-cracking steel is expensive, there are some operating conditions where you have no choice but to use it. Mr. Deng contacted me for advice. He is stamping 4.5mm-thick 40Cr hot-rolled sheet with a material hardness of 26 HRC. Currently, he is using DC53 die steel for the cutting edges, but after 6,000–7,000 stamping cycles,…

Hot forging dies require high heat resistance to prevent annealing, which can lead to a decrease in hardness, die collapse, and cracking—all of which shorten the service life of hot forging dies. When it comes to hot-forging dies for standard nuts, everyone prefers to use tungsten carbide dies because of their excellent heat resistance, high…

We received an inquiry from Mr. Li in Nantong, Jiangsu, asking for recommendations on die  steel for hot forging 316L stainless steel.  Upon further inquiry, we learned that he is hot forging liquid-cooled plates that have been normalized. His current die is made of 8418 mold steel, but after producing just 200 parts, the die cavities…

A netizen called to ask me: For PPS+GF20 reinforced plastic, is SKD61 or 8503 a better choice for mold steel? This netizen is developing a new mold with an annual production volume of 200,000 units, but the mold is intended for long-term use—perhaps even for ten or twenty years. The design engineer said SKD61 would…

The factors that determine the performance of die steel are alloy composition, smelting quality, and heat treatment processes. These three elements form a three-legged stool where each supports the others; if any one of them is weak, it will affect the performance of the die steel and its service life.  A netizen asked me what…

When you can’t shoot a video, come take a walk around the workshop—you’ll have something to say.  I saw four pieces of 1.5-metric-ton batches of high-quality 8433 heat-resistant steel ready for shipment, and I just wanted to tell you that the heat resistance and stability of 8433 are 2–3 times that of H13, with a…

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…