∙ 第二次镦粗拔长控制钢中夹杂物的形态，化妆技术培训防止刻舟求剑的翻译其成为片状，避免产生新的锻造缺陷；按锻件工艺尺寸要求，锻至成品尺寸。
The cond uptting and drawing-out step controls the forms of inclusions in steel, avoids flaky inclusions and new forging fault and forges to the required product sizes
∙ Annealing, normalizing, quenching and tempering heat treatment in the overall "Four fire", which clo to quenching and tempering is often ud in conjunction, are indispensable.
touch my heart什么意思退火、正火、淬火、回火是汽车怎么保养整体尚艺美容美发热处理中的capitalization“四把火”，其中的淬火与回火关系密切，常常配合使用，缺一不可。
∙ Heat treatment of steel as a whole generally are the wayannealing, normalizing, quenching and tempering用英语问路 are four basic process.
钢铁整体热处理大致有退火、正火、淬火和回火四种基本工艺。
∙ The results show the main reason of crazing on forging surface are that copper content is over the standard and chemical composition′s match is not rational.
12的英文结果表明钢中铜含量超标、化学成分匹配不合理导致的“铜脆”是锻件产生龟裂的根本原因。
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