Thermal deformation processing: heat pressing, forging and rolling for metal and alloy.
热形变加工：金属及其合金的热压、锻造、轧制等形变加工。
The production technology of large flange has three kinds of forging and rolling and splicing.
大型法兰的生产工艺有锻造及卷制和拼接三种。
Causes the steel to produce the hot brittleness, reduces the steel the ductility and the toughness, when forging and rolling crack.
使钢产生热脆性，降低钢的延展性和韧性，在锻造和轧制时形成裂纹。
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