Hot working process for eliminating blocky structures in large low-alloy steel forgings

The invention belongs to the field of hot working of steel and iron materials, particularly relates to a hot working process for eliminating a blocky structure in a large low-alloy steel forge piece, and is suitable for solving the problem of low impact toughness or serious fluctuation caused by thi...

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Hauptverfasser: JIANG ZHONGHUA, ZHU JUESHUN, LEE YONG-HAN, LI DIANZHONG, LI YIYI, WANG PEI
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creator JIANG ZHONGHUA
ZHU JUESHUN
LEE YONG-HAN
LI DIANZHONG
LI YIYI
WANG PEI
description The invention belongs to the field of hot working of steel and iron materials, particularly relates to a hot working process for eliminating a blocky structure in a large low-alloy steel forge piece, and is suitable for solving the problem of low impact toughness or serious fluctuation caused by thick and large blocky structures contained in a microscopic structure after heat treatment of the large low-alloy steel forge piece. The hot working process comprises the following specific steps: (1) carrying out high-temperature diffusion on a steel ingot or a blank and then carrying out multi-pass forging; (2) preheat treatment is reasonably designed, that is, after multiple passes of forging, one pass of proper annealing normalizing and tempering treatment is carried out; (3) controlling mass heat treatment consisting of quenching and tempering; and (4) reasonable hoisting and discharging are conducted, after standing and cooling are conducted in air, quenching is conducted in circulating water, and finally tempe
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subjects ALLOYS
CHEMISTRY
FERROUS OR NON-FERROUS ALLOYS
GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUSMETALS OR ALLOYS
MAKING METAL MALLEABLE BY DECARBURISATION, TEMPERING OR OTHERTREATMENTS
METALLURGY
METALLURGY OF IRON
MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS
TREATMENT OF ALLOYS OR NON-FERROUS METALS
title Hot working process for eliminating blocky structures in large low-alloy steel forgings
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