| 冷拉钢与热轧钢的区别 |
| 添加时间：2018/12/8 14:07:47 浏览次数： |
| 冷拉钢是在常温条件下，以超过原来钢筋屈服点强度的拉应力，强行拉伸钢筋，使钢筋产生塑性变形以达到提高钢筋屈服点强度和节约钢材为目的。 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。 Cold-drawn steel is a kind of steel bar under normal temperature. The purpose of cold-drawn steel is to increase the yield point strength of steel bar and save steel by forcibly stretching the steel bar to produce plastic deformation. Hot rolled steel is rolled by high temperature heating, its strength is not very high, but enough to meet our use, its plasticity, weldability is better, so we are more commonly used; cold rolled steel is ordinary hot rolled steel after strong drawing over strain hardening stage, its strength is high, but toughness, weldability is poor. It's hard and brittle. |
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