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Comparison of punch life of powder high speed tool steel and high speed tool steel  

Lee, Woo-Ram (HKC)
Lee, Chun-Kyu (Department of Metal Mold & Die Engineering, Kongju National University)
Publication Information
Design & Manufacturing / v.16, no.1, 2022 , pp. 9-14 More about this Journal
Abstract
A lot of research is being done on metal materials to improve the lifespan of molded parts. As a result, excellent mold materials have been developed that withstand high hardness at high temperatures and frictional heat generated from high-speed cutting. In this study, the press mold life of powder high-speed tool steel and general high-speed tool steel was compared. Powdered high-speed steel is composed of alloying elements such as tungsten, maldividene, cobalt, chromium, and vanadium in steel, which improves wear resistance compared to high-hardness and high-speed tool steels. The mold parts of both steel types were manufactured in the same way from heat treatment to machining, and the powder high-speed tool steel was 66HRC and the high-speed tool steel was 61HRC. As a result of the experiment, it was observed that the number of punching of powder high-speed tool steel was improved by 40-50%, and powder high-speed tool steel had fewer impurities, uniform texture, and excellent surface structure. It has a microscopic structure.
Keywords
High Speed Steel; Improving the life of the press die; Powder high-speed steel; Powder Metallurgy;
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  • Reference
1 H-Y LEE, "The Effects of Cobalt on Wear and Friction Characteristics of High Speed Steel by Powder Metallurgy", Department of Mater., Eng., keimyung niversity, Daegu, Korea, pp. 156-163, 1999.
2 S-H HONG, "Life and Mechanical Properties of Hot Former Die for Bearing Race using P/M High Speed Steel", Department of Powder Materials Research, Korea Institute of Materials Science, Korea Institute of Machinery and Mater., 531 Changwondaero, Changwon, Gyeongnam, 641-831, Korea, pp. 367-371, 2007.
3 H-Y LEE, "The Effect of Heat treating Conditions on Wear Characteristics of High Speed Steel by Powder Metallurgy", Korean Tribology Society, pp. 135-140, 2001.
4 http://www.hmk.hitachi-metals.com
5 http://www.millroll.com
6 http://meisterlab.co.kr/
7 H HONG, "Fabrication and Mechanical Properties of Powder Metallurgical High Speed Steels with Various Co Contents", Materials Technology Dept., Korea Institute of Machinery and Materials, 66 Sangnam-dong, Changwon, Kyungnam 641-831, Korea, pp. 303-306, 2002.
8 S-H HONG, "Failure analysis of powder compacting punches made of powder metallurgy high speed steels", Korea Institute of Machinery and Mater.,66 Sangnam-dong, Changwon, Kyungnam 641-010, Korea,, pp. 78-84, 2000.