http://www.navaching.com/forge/heat.html
"In the tempering-range, color is the result of oxides formed on the surface of the steel. "
>60度你就会觉得炀. 发红时的温度~530度,对钢的强度没有影响.
• 530度,对钢的强度没有影响.?枪管太热会导致射出的弹丸如同小孩尿 -陕北农民- ♂ (50 bytes) () 04/06/2010 postreply 05:08:25