Author: wudejian

The second truckload of tool steel was unloaded from 11:00 to 12:30—we spent the entire morning unloading. But the second truck was much easier; everything was already prepared, so unloading went smoothly. Now that both truckloads have arrived safely, I can rest easy. Seeing the workshop fully stocked gives me a sense of peace of mind. When…

A netizen asked in the comments section of my video: How can I stamp a 1.8mm-thick 420 steel plate without causing tear marks? Scratch marks are typically caused by adhesive wear resulting from stamping debris, which can damage parts or leave scratch marks; this can be avoided by selecting a non-stick die steel.  Speaking of…

This morning, the sun was shining brightly in Dongguan, and our shipment arrived just in time—being able to unload without getting wet is a blessing in itself.  We received two truckloads today; this is the first one. We’ve already finished unloading it safely, and now we’re getting ready to unload the second one. With two…

Question from a viewer during the 295th live stream: Boss, for stamping 0.3-thick 201 stainless steel small parts with a 5-millimeter-high shallow draw, what type of die steel is best? Daily production is 60,000 cycles. The biggest concern with stainless steel drawing dies is wire drawing. Fortunately, this is 0.3 mm stainless steel—a thin material—with…

Cold-extruded T2 red copper (8566) not only solved the problem of punch breakage but also increased punch lifespan by more than 10 times—this was the most valuable comment in the 295th live stream.  A long-time customer commented in the livestream that 8566 cold-stamped red copper works very well. They’ve made one punch so far, and…

A viewer named Deng Sheng asked in the live stream: “Punching and blanking 3mm-thick T2 red copper sheets tends to cause burrs. Could you recommend materials for the upper punch and lower die? We’re currently using DC53.”  Burrs during the stamping of red copper sheets are caused by adhesive wear resulting from material adhesion. Since…

Question from a viewer during the 295th live stream: What is the best die material for punching holes in 3mm-thick aluminum sheets?  Punching and cutting 3mm-thick aluminum sheet involves stamping thick aluminum. The punching process can easily generate aluminum shavings that cause material jams. Therefore, you should select a die steel with high-quality smelting that is…

A netizen asked: For hot die forging of stainless steel, what type of die steel offers the best fatigue resistance and heat resistance? During last night’s 296th live stream, Hot forging of stainless steel involves high operating temperatures; parts must be heated to nearly 1200°C. The high temperature of the parts causes the die to heat…

Question from a viewer in the live stream: What type of die steel is suitable for drawing? I’m cold rolling 1mm-thick material, and there are always drawing marks. Stretch dies are most susceptible to stretch marks, and die steel of poor smelting quality is also most prone to them. He is currently drawing 1 mm-thick cold-rolled…

Mr. Yuan wanted to purchase 8566 die steel, but after discussing the matter in detail, I advised him against it because the operating conditions of his die were not suitable for this material.  He is stamping 0.5mm-thick silicon steel sheets and described the process as high-speed stamping—3 strokes per second. He is currently using SKH-9,…

Last night, June 22, 2026, I hosted a 1-hour-and-18-minute livestream—my 296th livestream.  This livestream received 29,000 impressions, with 1,164 viewers. The average watch time per viewer was 1.5 minutes, with an average of 24 viewers online at any given time and a peak of 46. I gained 19 new followers.  The highlight of this stream’s…