{"id":979,"date":"2026-06-25T09:14:08","date_gmt":"2026-06-25T09:14:08","guid":{"rendered":"https:\/\/www.wudejiansteel.com\/?p=979"},"modified":"2026-06-25T09:14:09","modified_gmt":"2026-06-25T09:14:09","slug":"when-punching-and-blanking-3mm-thick-t2-copper-sheet-dc53-tends-to-produce-burrs-what-type-of-tool-steel-should-be-used-for-the-upper-punch-and-lower-die%ef%bc%9fblog-190","status":"publish","type":"post","link":"https:\/\/www.wudejiansteel.com\/?p=979","title":{"rendered":"When punching and blanking 3mm-thick T2 copper sheet, DC53\u00a0tends to produce burrs. What type of tool steel\u00a0should be used for the upper punch and lower die\uff1fblog\u00a0190"},"content":{"rendered":"\n

A viewer named Deng Sheng asked in the live stream: \u201cPunching and blanking 3mm-thick T2 red copper sheets tends to cause burrs. Could you recommend materials for the upper punch and lower die? We\u2019re currently using DC53.\u201d<\/p>\n\n\n\n

 Burrs during the stamping of red copper sheets are caused by adhesive wear resulting from material adhesion. Since red copper sheets are not particularly hard, the dies do not require high hardness; instead, they need to have non-stick properties.<\/p>\n\n\n\n

\"\"<\/figure>\n\n\n\n

 DC53 is a high-carbon steel with a carbon content of 1.0%. Poorly smelted DC53 suffers from severe segregation and contains a large number of microscopic cracks invisible to the naked eye. When these microscopic cracks come into contact with soft red copper during stamping, copper permeation occurs, leading to sticking and burrs on the product. The solution is to select a die steel that prevents material adhesion.<\/p>\n\n\n\n

 Mr. Deng asked about punching and blanking 3mm-thick T2 copper sheets; using DC53 tends to cause burrs. There are two solutions:<\/p>\n\n\n\n

\u00a01) Apply a coating to the existing DC53<\/a><\/strong> to improve surface finish. The coating will cover the steel\u2019s inherent microcracks, resolving the issue of copper adhesion and eliminating burrs.<\/p>\n\n\n\n

\u00a02) Switch to 8566 die steel<\/a><\/strong>. Yuhui\u2019s 8566 is produced through high-quality smelting in a critical gas electroslag furnace, resulting in low impurity content. It undergoes six-sided forging on a 4,500-metric-ton press\u2014with three forging and three drawing passes\u2014ensuring uniform microstructure and eliminating segregation and microcracks. This naturally prevents copper powder adhesion. Additionally, 8566\u2019s high thermal conductivity allows heat generated during stamping to dissipate quickly, further reducing the risk of copper powder adhesion.<\/p>\n\n\n\n

\"\"<\/figure>\n\n\n\n

Mr. An is stamping 1.55mm-thick 62 copper electrical plugs. He uses DC53, SKH-9, and D2 punches, but after several thousand strokes, copper powder adheres to the scrap material, causing damage to the products. Mr. An reported today that the 8566 punches he purchased from you last time for copper stamping performed very well\u2014they lasted for 300,000 strokes without requiring any die repairs.<\/p>\n\n\n\n

 These two solutions apply to both punches and dies.<\/p>\n\n\n\n

 *************<\/p>\n\n\n\n

Wu Dejian’s\u00a0tool\u00a0steel<\/a><\/strong>, the chief of staff of the user, bought everything he had used.<\/p>\n","protected":false},"excerpt":{"rendered":"

A viewer named Deng Sheng asked in the live stream: \u201cPunching and blanking 3mm-thick T2 red copper sheets tends to cause burrs. Could you recommend materials for the upper punch and lower die? We\u2019re currently using DC53.\u201d  Burrs during the stamping of red copper sheets are caused by adhesive wear resulting from material adhesion. Since […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-979","post","type-post","status-publish","format-standard","hentry","category-blog"],"aioseo_notices":[],"aioseo_head":"\n\t\t\n\t\n\t\n\t\n\t\n\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t