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Technical service

冷拉钢和热热轧钢的区别

Source：Suzhou Ritong Metal materials Co., Ltd Popularity：3247 Published：2015-04-25

冷拉钢和热热轧钢的区别：冷拉可提高屈服度节约材料，将热轧钢筋用冷拉设备加力进行张拉,经冷拉时效后使之伸长.冷拉后,屈服强度可提高20%-25%,可节约钢材10%-20%, 热轧钢是经过高温加热轧制而成的钢材，它的强度不是很高，但足以满足我们的使用，它的塑性、可焊性较好，因此我们比较常用；冷轧钢是普通热轧钢经过强力拉拔超过应变硬化阶段的钢材，它的强度很高，但韧性、可焊性差，比较硬、脆而且强度低、延伸不太好、外观颜色不亮

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