THE MAIN PRINCIPLES OF INTENSIVE QUENCHING OF TOOLS AND DIES

N.I. Kobasko:
THE MAIN PRINCIPLES OF INTENSIVE QUENCHING OF TOOLS AND DIES
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1st International conference on heat treatment and surface engineering of tools and dies, IFHTSE 2005 (08 – 11 June 2005, Pula, Croatia)

ABSTRACT:
The paper discusses in details the main principles of intensive quenching process as applied to steel tools, dies and other steel parts. The paper considers one- and two-step intensive quenching process for tools and dies. When applying a one- step intensive quenching method, the cooling is interrupted at the moment of time when the part surface compressive stresses are at their maximum value and the core has not reached the marten site start temperature.

When applying a two-step intensive quenching technique, the duration of the first step of cooling depends on the duration of the “self- regulated thermal process”. At the second step of steel parts within the marten site range are cooled very rapidly. The paper presents also a new method of calculation and optimisation of the process of quenching.


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