Tetsu-to-Hagane
Online ISSN : 1883-2954
Print ISSN : 0021-1575
ISSN-L : 0021-1575
WATER AND AIR ANNEALING OF HIGH SPEED STEELS (SKH 8.AND SKH 6)
Study on High Speed Tools-XVIII
Hideji Hotta
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1958 Volume 44 Issue 11 Pages 1284-1287

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Abstract

Following the 17th. report (Tetsu to Hagane Vol. 42 (1956), No. 6 p. 37), the rapid softening method by water .and air annealing of high speed steels (SKH 8 & SKH 6) was studied by micrography and hardness test.
The results obtained were summarized as follows:
The hardness of the quenched high speed steel that had been annealed in water or air from 800°C (just below the transformation point) was nearly equal to such hardness at which was possible to be machined, although it was less softened as compared with the hardness obtained by full annealing furnace.

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© The Iron and Steel Institute of Japan
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