Author: wudejian

Netizen Mr. Zhang asked, what kind of tool steel is better for punching 0.3mm thick SK5, with a material hardness of HV180-190. Currently, ASP23 is being used to punch more than 100000 times. That shouldn’t be the case. ASP23 is a powder high-speed steel with a hardness of 64-66HRC and good wear resistance. It is made by punching…

The customer who injected PC+GF30 came to Yuhui again to purchase non stick 8503 die steel for his reinforced PC material with 30% fiberglass. The customer’s previous PC+fiberglass 30% reinforced plastic was made of DHA1 mold steel, which quickly developed a sharp edge. However, now they are using non stick 8503 die steel, which doubles their lifespan the…

I haven’t been to Chifeng City, Inner Mongolia, I only saw it on the map, but I ordered the DC53 round stick from Yuhui and arrived before me multiple times. Although I am a loyal customer who has made multiple purchases, every time I see his order, I think of the vast grassland in my…

109 pieces per kilogram of four copied 8566 die steel, punched 4.0 hot-rolled plate, punched 10000 times, the blade fell off piece by piece. I received two cases today regarding the cracking of the four copied 8566 die steel. This one is Mr. Huang, whose mold is a 4.0 hot-rolled plate. He bought Kunshan 8566 die steel with a…

Zhihu netizens ask: What are the precautions when choosing tool steel, and do you have any good suggestions? I answered that the key to doing business is to interact with people. When choosing a reliable tool steel supplier, the first thing to consider is whether the business owner’s values are correct. Products are like people, and only…

We refused to sign the sales contract with the listed company, but the payment for 8566 die steel has been received, which is the happiest thing today.  Last Friday, a listed company in Zhengzhou came to purchase Yuhui 8566 anti collapse die steel, but the contract was a sales contract. In order to be free, I refused.…

The most fulfilling case today is the stamping of 2.5mm stainless steel, and the lifespan of 8566 die steel is 8 times that of D2. Mr. Zhang is stamping 2.5-thick stainless steel. Originally, when using D2 die steel for the punch, it would break after 5000 punches, and the broken punch would easily carry powder and damage the…

This afternoon, I want to eat well and eat more. A customer in Chengdu placed a large order for tool steel worth 100000 yuan for me. The payment has been received, I can’t help but be delighted. My tool steel is sold by kilogram, and the payment amount is usually in the hundreds or thousands, with very few in…

Netizens left a message asking, what material is used for die steel for cold shrinkage and diameter reduction of pipes? Because I don’t know what material his shrink tube is made of, but there is a case that can tell him that Midea’s aluminum tube shrink mold uses non stick 8503 die steel. The main problem…

Netizens ask: What type of tool steel is good for aluminum cold forging?  What is the best tool steel for aluminum cold forging molds? For those with low lifespan requirements, use affordable H13, while for those with long lifespan requirements, use high toughness LG die steel. Aluminum cold forging molds are most afraid of sticking aluminum chips, which can…

When people have free time, they still need to read books, and it’s uncertain when they will be able to use them. Today I visited the leaders of Kyocera because I had read several books by Kazuo Inamori before, which gave me a turning point in today’s negotiations. We have been cooperating with Kyocera for…