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冷轧钢筋和热轧钢筋用眼看有哪些不同？ - 工程施工 - 项目管理 - 氿上知道
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满意答案
冷扎钢筋：分冷拉、冷拔；冷拉就是将热轧钢筋用冷拉设备加力进行张拉,使之伸长.冷拉后,屈服强度可提高20%-30%,可节约钢材10%-20%,；冷拔就是常温下将&6-8fr HPB235钢筋强力拉过拔丝模具。
热轧钢筋屈服强度较低，塑性性能好。冷轧钢筋屈服强度较高，塑性性能差。两者的极限抗拉压强度相同。
天意
回答于：2014-09-11
共2条回答