1、让冷拔钢管组织和成分均匀一致,这对原料尤其重要,因为热轧管材各段的轧制温度和冷却速度不一样,造成组织结构不一致。在高温下原子活动加剧,σ相溶解,化学成分趋于均匀,快速冷却后就获得均匀的单相组织。
1. It is especially important for raw materials to make the structure and composition of cold-drawn steel tubes uniform, because the rolling temperature and cooling rate of each section of hot-rolled steel tube are different, which results in the inconsistency of the structure. At high temperature, atomic activity intensifies, _phase dissolves, chemical composition tends to be uniform, and uniform single-phase structure can be obtained after rapid cooling.
2、消除加工硬化,以利于继续冷加工。通过固溶处理,歪扭的晶格恢复,伸长和破碎的晶粒重新结晶,内应力消除,钢丝抗拉强度下降,伸长率上升。
2. Eliminate work hardening to facilitate the continuation of cold working. After solution treatment, the distorted lattice is restored, the elongated and broken grains are recrystallized, the internal stress is eliminated, the tensile strength of steel wire decreases, and the elongation increases.
3、恢复冷拔钢管固有的耐蚀性能,由于冷加工造成碳化物析出,晶格缺陷,让冷拔钢管耐蚀性能下降。固溶处理后冷拔钢管耐蚀性能恢复到合适状态。
3. To restore the inherent corrosion resistance of cold-drawn steel tubes, the corrosion resistance of cold-drawn steel tubes is reduced due to the precipitation of carbides and lattice defects caused by cold processing. After solution treatment, the corrosion resistance of cold-drawn steel pipe restored to an appropriate state.
辛苦整理!转载请注明来自 http://wxddlb.com/show.asp?id=76GB/T8162和GB/T8163,结构用无缝钢管与输送流体用无缝钢管标准1:标准要求不一样,输送流体的要做涡流试验的,2:应用…
冷拔钢管平常在进行贮存的时候会发生氧化,导致生锈。但是随着科学技术的发展,对冷拔钢管的贮存条件越来越好,那么防…
冷拔钢管的生产方法主要是靠芯棒拔制来改变冷拔钢管的外径及厚度。外观上冷拔无缝钢管要短于热轧无缝钢管,冷拔无缝钢…
按照冷拔无缝钢管生产方法的不同.无缝钢管可以分为热轧管、冷轧管、冷拔管、挤压管等。冷拔无缝钢管一般在自动轧管机…
1、让冷拔钢管组织和成分均匀一致,这对原料尤其重要,因为热轧管材各段的轧制温度和冷却速度不一样,造成组织结构不…
冷拔异型钢管矫直后,要进行初次检查吹灰以确定切头、尾长度。冷拔异型钢管切断的目的是清除具有裂纹、结、疤、撕裂和…
管理员
该内容暂无评论