분말고속도공구강과 고속도공구강의 펀치 수명 비교
Comparison of punch life of powder high speed tool steel and high speed tool steel
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초록
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.
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.
참고문헌 (8)
- S-H HONG, "Life and Mechanical Properties of Hot Former Die for Bearing Race using P", M High Speed Steel, 2007, pp.367~371
- 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, 303~306 (2002)
- 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)
- 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, 156~163 (1999)
- S-H HONG, "Failure analysis of powder compacting punches made of powder metallurgy high speed steels", Korea Institute of Machinery and Mater, 78~84 (2000)