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Effect of Boiling Range of Mineral Base Stocks on Quenching of 0.45%C Carbon Steel
Author: H. Yokota, Nippon Mitsubishi Oil Corporation; H. Hoshino, Nippon Mitsubishi Oil Corporation; S. Satoh, Nippon Mitsubishi Oil Corporation; R. Kanai, Nippon Mitsubishi Oil Corporation | Document Download | Product code: ZCP2000HT0827
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Classified as: Carbon and Alloy Steels Cast Irons ...more
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This paper describes the effect of boiling range of mineral base stocks used in quenchants on quenching of a carbon steel containing 0.45% carbon. 21 quenchants of same viscosity(17mm2/s @ 40°C) were prepared. They contain same additives but the types of their mineral base stocks were different. Hardness of the carbon steel specimens after quenching tests varied with the types of those mineral base stocks. Cooling power of the quenchants was measured by JIS methods and the result showed that the difference of hardness was caused by different cooling rates in the temperature rang of 300-350°C. Such different of cooling rates were closely related to boiling ranges of the mineral base stocks used. It was particularly found that 5% distillation temperature of the mineral base stocks strongly affected the cooling rates in the temperature range of 300- 350°C.
- From: HeatTreating 2000: Proceedings of the 20th Conference (ASM International)
- Published: February 01, 2001
- Pages: 6
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