Category: blog
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When stamping 1.0-thick 201 stainless steel open washers, the LD die steel breaks after just a few hundred pieces. What type of die steel should be used?blog 319
Mr. Huang asked: “This punch is used to punch out these slotted gaskets (1.0 thick, 201 grade), with a slot width of 1.1. It frequently breaks off. What type of die steel should be used for this punch?” After further discussion, we learned that the punch is made of LD die steel. Previously, it could punch…
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Yuhui Mold Steel: Every piece of mold steel is a large forging produced through a process of six-sided forging, involving three forging operations and three drawing operations.blog 318
Today, the sun is shining brightly in Dongguan, and we received two shipments. One truck arrived in the morning and another in the afternoon; unloading was very easy thanks to the clear weather. Yuhui mold steel—every piece is a large forging, six-sided and produced using a three-forging, three-drawing process. Forging is the third major strengthening…
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8566 die steel is a proprietary chipping-resistant steel developed by Yuhui; the standard 8566 grade will not solve your punch chipping problem.Blog.317
If you buy a counterfeit 8566, not only will it fail to solve your mold chipping problem, but it will also lead you to misjudge the chip-resistant properties of 8566 die steel. It’s like taking counterfeit medicine—it doesn’t cure your illness, yet you blame the medicine for being ineffective. Mr. Cao has a lettering specialist…
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Mr. Zheng asked: What type of die steel is best for cold extrusion of mobile phone heat sinks? When using H13 steel for 6063 aluminum, scratches appear after producing 20,000 units.Blog.316
Mr. Zheng asked，“What type of die steel is best for cell phone heat sinks? We’re cold-extruding 6063 aluminum heat sinks, and the teeth are prone to scoring. We’re currently using H13, but after producing about 20,000 units with a single die, scoring occurs.” The cold extrusion dies for this type of aluminum heat sink feature narrow-edged,…
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When using H13 or 8418 for fine-tooth aluminum extrusion, the teeth tend to break; however, using high-toughness LG die steel prevents tooth breakage.Blog.315
Today’s most valuable order came from an aluminum extrusion plant that placed a repeat order for high-toughness LG die steel, indicating that they have resolved the fracture issues with their fine-tooth cutters. Mr. Li’s aluminum profile molds operate at a constant temperature of 500–530°C. Currently, he uses H13 steel, but the fine teeth are prone to…
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Don’t get upset if you end up buying substandard mold steel—the market does need some substandard mold steel.Blog.314
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—each supports the others. The absence of any one of them will affect the performance of the die steel and its service life. However, many people do not see it this way; they…
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What type of tool steel should be used for hot-forging dies to prevent cracking? Using “Fake 8566” to hot-forge 45 steel results in die cracking after just a few hundred strikes.
Higher hardness isn’t always better for hot forging dies; in some cases, excessive hardness can actually accelerate cracking. A netizen used “Fake 8566”—a low-grade, deep-pit product for hot forging 45 steel costing 160 yuan per kilogram—and after just a few hundred strikes, the die cracked at the opening. They asked me: What die steel should be…
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8566 anti-cracking steel is not only widely copied in the mold industry; the cutting tool industry is also widely copying 8566 die steel.. Blog.312
8566 anti-cracking steel is not only widely copied in the mold industry, but also in the cutting tool industry. （8566 die steel） The day before yesterday, while on a business trip, I received a call from Mr. Lin on the highway. Mr. Lin is a cutting tool user who operates a wood chipper in Huaiyang.…
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Precision punching of 4mm pickled sheet metal: Mr. Zhang tried four types of die steel, but the punches chipped after just a few hundred or a few thousand punches; he had to use 8566 anti-chipping steel. Blog.311
For single-step precision punching of steel, especially products with teeth, you must use 8566 anti-chipping steel; otherwise, the punch will chip so badly you’ll start questioning your life choices. Mr. Zhang came to consult with me yesterday. He’s precision punching 4mm-thick pickled sheet metal, and the product features many small serrations. He’s tried SKH9, SKH51,…
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When deep-drawing a cylinder from 1.5mm-thick DC04 deep-drawing sheet, using tungsten steel caused some wire marks; Cr12MoV + Thermal Treatment (TD) worked better. Blog.310
Mr. Qian came to consult me about deep-drawing 1.5mm-thick DC04 sheet metal into cylinders. Initially, he used Cr12MoV with thermal treatment (TD), but the dies didn’t last long and kept developing draw lines. A while back, he spent several thousand yuan per kilogram on YG11 cemented carbide, but the dies started showing draw lines after…
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Every piece of mold steel received by Yuhui undergoes third-party testing—a practice rarely seen in the industry—and our factory conducts these tests in accordance with brand requirements.blog 309
Over the past two months, we’ve received a new shipment of 100 metric tons of mold steel, which is currently being tested by a third-party lab. This testing seems both useful and useless. It’s useless because the tests don’t reveal any issues—the mold steel has no quality problems, and it’s exactly what we want. It’s useful…
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When should high-hardness die steel be selected for hot-forging dies? Shallow-cavity hot-forging dies require high-hardness die steel.blog 308
When Should High-Hardness Die Steel Be Selected for Hot Forging Dies? The primary failure modes of hot forging dies are die collapse and cracking. This is because die temperatures during the hot forging process approach 600°C. At such high temperatures, many die steels with poor heat resistance undergo annealing, leading to die collapse and cracking. To…