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Mechanical Engineering Welding / CSWIP · English

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Mechanical Engineering Welding / CSWIP Easy English

The temperature gradient of steels subjected to post-heat treatment stress relief cycles must be carefully controlled at all the temperatures above 300°C in order to:

A. Ensure that a minimum of expensive heat energy is used

B. Reduce the formation of hard martensitic structure

C. Allow the weld to diffuse any hydrogen into the HAZ

D. Heated to a full transformation to austenite then rapidly cooled.

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