Author: wudejian
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Cold heading dies for anti-loosening bolts: 8566 die steel offers 20 times the service life of DC53 and reduces tooling costs by 80%—something other tool steels cannot achieve.blog 142
By adding serrations to the bolts, the service life of 8566 die steel is 20 times that of DC53, and mold costs are reduced by 80%. Last night, I received a message from Mr. Chen: “Hello, General Manager Wu! We verified today that 8566 steel has 20 times the service life of DC53.” Seeing a 20-fold…
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Customers who can afford it are polite; those who can’t are hostile.blog 141
Another great day has come to an end. Although I had a couple of inquiries from clients who couldn’t afford our products, which left me feeling a bit down for a moment, we’ve got plenty of orders. I was particularly surprised by a large order from Xiamen. When she inquired last week, the buyer didn’t…
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Stamping of 0.4mm-thick, 400HV-hard 304 stainless steel with narrow edges; the Yuhui 8566 die steel withstood 150,000 stamping cycles without burrs, much to Mr. Liu’s satisfaction.blog 140
Mr. Liu said that using your 8566 die steel to punch HV400 304 stainless steel works very well too! After receiving this positive feedback, I immediately asked, “How thick is your 400 HV 304 stainless steel, and how many cycles can the 8566 handle?” The reply was that it was 0.4 mm thick 400 HV…
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8503 mold steel can withstand 1 million cycles in injection molds for nylon reinforced with 30% glass fiber.blog 139
Mr. Wan said that 8503 can withstand 1 million cycles when molding nylon reinforced with 30% glass fiber. This news really excited me. As far as I know from my clients, 8503 mold steel—which resists material sticking—is currently the only option capable of achieving a service life of 1 million cycles when molding nylon reinforced…
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Stamped from 2.5 mm thick stainless steel; the Yuhui 8566 die steel has withstood 100,000 stamping cycles with no issues.blog 138
A Douyin user commented under my video: “Hey boss, your die steel is pretty good. I bought some 8566 from you to punch 2.5mm stainless steel, and after 100,000 punches, there are still no issues.” This comment is worth its weight in gold—it specifies the material, thickness, die steel type, and service life. The only thing missing is…
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When punching 1.2mm-thick hardened 65Mn steel, Yuhui PM23 powdered high-speed steel increased punch life by 13 times; Mr. Huang has been purchasing it for three consecutive years.blog 137
I received another order for Yuhui PM23 powdered high-speed steel from Mr. Huang this morning, which touched me a little. Mr. Huang first came to us three years ago. He was stamping 1.2mm-thick quenched and tempered 65Mn steel with a hardness of 47HRC. He had previously used PM53 and PM4 punches, both of which suffered severe…
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Can you recommend any die steel that doesn’t stick to the material and doesn’t crack?blog 136
Mr. Cheng asked if there were any die steels he could recommend that don’t stick to the material and don’t crack. He’s currently cutting 5mm iron sheets, and using DC53 for the base plate causes sticking, resulting in burrs on the products. Coating doesn’t help either—applying a coating requires polishing the mold first, which is a…
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Samuel Ullman’s “Youth” is an inspiring read.blog 135
Samuel Ullman was born in Germany and was a rabbi who emigrated to the United States to escape persecution of Jews. He was also an entrepreneur who started out selling groceries and went on to become a director of a local bank. He left behind several collections of poetry, the most famous of which is…
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Some competitors have started attacking 8566 die steel, which shows that 8566 has become well-known.blog 134
I opened a video platform this morning and received two pieces of news—one good and one bad. The good news was that someone complained that their molds were always breaking and asked if there was a good solution. A user commented below, saying, “@Yuhui Mold Steel—just use their steel. The quality I’ve used is excellent.”…
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When punching 3.7mm stainless steel, the service life of Yuhui’s PM23 punches is 1.5 times longer than that of standard PM23 punches on the market, which made Mr. Liang very happy.blog 133
Good customers are reasonable. Yuhui’s PM23 punch extended the service life by 1.5 times, which made Mr. Liang very happy. Mr. Liang was punching two 5.2mm holes and one 6.8mm hole in 3.7mm-thick stainless steel, all of which were pilot holes for tapping. The dimensional tolerances were strict. With standard PM23 punches plus coating, the…
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What mold steel is recommended for hot forging of stainless steel? The 8418 mold steel collapsed and cracked after producing 1,200 parts.blog 132
One user mentioned that when hot-forging stainless steel square boxes using 8418 mold steel, the mold collapses after producing 1,200–1,300 parts. Even after re-profiling the mold surface and performing stress relief treatment on the mold cavity, as well as shot peening the cavity, the mold life remains short. A single mold can be re-profiled a maximum…
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I was a bit surprised when someone from a certain e-commerce platform asked me how to fix the problem of chipping on their PM23 high-speed steel powder.blog 131
I just received an inquiry from Mr. Chen regarding the stamping of 1.7mm-thick 65Mn hardened steel for C-type retaining rings with a material hardness of 45 HRC. Currently, they are using imported PM23 powdered high-speed steel purchased from a certain online retailer for the lower die cutting edges, but the edges chip after producing only 9,000…