预应力钢丝不宜加热使用

Not to Heat Prestressed Steel Wire in Using

对５．０ｍｍ６种不同等级的预应力钢丝进行加热试验，分析它们在不同温度下力学性能的变化，试验结果表明预应力钢丝不能加热使用，尤其是不能加高温（５００℃以上）使用。

mm prestressed steel wire with 6 classes in strength is heated to analyse the changes of mechanical property in different temperatures. The test result shows that prestressed steel wire can not be heated when being used,especially in high temperature (more than 500℃).