摘要
研究了吐丝温度及控制冷却制度对72LXA盘条组织和性能的影响。结果表明,在相同的冷却制度下,提高吐丝温度,组织中索氏体化率增加和先析铁素体含量减少,材料强度提高,先析铁素体和索氏体化率是影响材料力学性能的重要因素;加大珠光体形成后的冷却能力,可以抑制片层渗碳体的溶解;通过辊道速度和冷却风量的适当配合,可以提高盘条的通条性能。获得了强度高于1050 MPa的盘条,表明确定的热轧工艺可以满足盘条的力学性能要求。
Effect of the laying head temperature and controlled cooling process on microstructure and mechanical properties of 72LXA wire rod were investigated.The results show that under the same cooling process,with the raising laying temperature and increasing sorbitizing rate and decreasing proeutectoid ferrite,the steel rod strength is improving,proeutectoid ferrite and sorbitizing rate are the critical impact factors on steel rod properties;indentifying cooling after perlite forming can restrain the dissolve of lamellar cementite;the mechanical properties of whole rod coil are improved by the proper rolling rate and air cooling.The high strength of 1050 MPa of steel rod was obtained,that shows the defined hot rolling process can conform to the steel rod properties requirement.
出处
《金属热处理》
CAS
CSCD
北大核心
2012年第3期62-65,共4页
Heat Treatment of Metals
