工具鋼の熱處理方法と變形について (I)

概要

論文の詳細を見る
The dimensional change of standard specimens, A type and B type, made of carbon tool steel, high C-Cr-Mn-W steel and high speed steel, was studied after conventional heat treatments and besides after interrupted quenching, the so-called martempering, marquenching and time quenching. A large portion of dimensional changes on quenching possibly was attributed to the thermal stress during the rapid cooling. By martempering, the high thermal strains were eliminated excepting those unavoidable strains in the piece resulting directly from the austenite to martensite transformation. As the result of this experiments, martempering was found suitable for the heat treatment of high C-Cr-Mn-W steel and high speed steel, especialy in A type specimens whose shape was so complicated that the dimensional change on quenching was not diminished by subsequent tempering.
1954-02-25