Author: wudejian

There’s a street in Dongguan called Shijing Avenue. Along this stretch—less than 1 kilometer long—there are seven or eight roast goose restaurants, but only one is bustling with customers, where diners have to wait in line. The others are either struggling or frequently changing owners.  This illustrates that to run a successful business, you must…

DC53 is a die steel that has been overused to the point of exhaustion.  Mr. Wang from Cangzhou is stamping 3.75-thick hot-rolled Q235 steel sheets. The mold manufacturer said they used DC53, but the cutting edges need to be sharpened after only 20,000 strokes; otherwise, the products will have significant burrs.  When stamping 3.75-thick Q235…

Some narrow edge punches may crack, but you really use 8566 anti collapse steel. I just received a consultation from a netizen. He punched a 1.25-thick 62 copper with a punch width of only 0.7mm. The punch wall thickness is smaller than the plate thickness, and the punching ratio is less than 1:1. Now, he…

Mr. Chen told me that Q195 iron casters with a tensile strength of 1.1mm have a relatively high tensile height, and Cr12MoV cannot be produced without coating. It is impossible to produce 100 products before starting the wire drawing process. However, using non stick 8503 and stretching 30000 products, there will be a little bit…

Overtime delivery at night! This is 10 pieces of heat-resistant steel 8433 die steel.  These 10 pieces of heat-resistant steel 8433 are a repeat purchase from one of our stainless steel hot forging customers. He is a high-temperature component made of hot forged austenitic, martensitic, and nickel based stainless steel. It needs to be heated to…

A major client from Guangdong placed an order for 75 pieces of high-toughness LG mold steel with me, and I’m very pleased.  Seeing the 75 pieces of high-toughness LG mold steel ready for shipment in the workshop—40 pieces of LG premium material for mold cores and 35 pieces of round bar for insert cores—really put me in a…

Early this morning, Boss Zhang—whom I hadn’t been in touch with for five years—sent me a message. He’s working with stainless steel, which is prone to chipping at the corners, and asked me to send over a sample to test.  After asking a few questions, I learned that he’s punching 2mm-thick stainless steel with products…

Mr. Zhang said, “The 8566 die steel we used last time was great. Things are going much more smoothly now. Thank you, General Manager Wu.”  Receiving praise from a long-time customer really lifts my spirits.  Mr. Zhang’s mold is used for the cold trimming process after hot forging. The original DC53 punch was prone to chipping…

I have to admit, the current “Four Copies 8566” has done a very thorough job of copying—it’s a good student.  I saw that you wrote right at the beginning that 8566’s resistance to chipping is four times that of SKH-9 high-speed steel and twice that of D2, with a hardness of HRC 58–61. It’s primarily…

During the 298th live stream, a viewer asked: What type of steel is best for hot-forging punches?  Hot-forging punches require high resistance to thermal wear. Thermal wear resistance is a comprehensive property that requires not only high heat resistance and high red hardness but also high hardness to ensure excellent thermal wear resistance. At the…

Which mold steel doesn’t stick to aluminum chips? A question from a viewer during the 298th live stream.  When mold steel sticks to aluminum chips, it is due to adhesive wear caused by material adhesion—specifically, segregation issues in the mold steel. The microstructure contains a large number of microscopic cracks invisible to the naked eye. When aluminum…

A viewer asked during the live stream: What type of die steel should be used for stamping 2.0mm-thick TC4 sheet metal?  Someone asked this same question during the last live stream as well, which shows that many people are encountering problems with this type of application.  Many people underestimate the stamping of TC4 titanium sheets, assuming…