摘要
锅炉汽包用13MnNiMoR厚板在制造过程中一般采用高温热成型加工,在此过程中,钢板交货状态性能遭到破坏,主要是低温韧性下降明显,需要进行恢复性能热处理。在湘钢生产的100 mm13MnNiMoR钢板上取样进行不同热成型工艺的模拟试验,并对试样性能及组织状态进行了分析。试验结果表明,钢板在经历不同温度的热成型过程后,组织及性能有不同的变化。湘钢研制的13MnNiMoR厚板满足锅炉制造企业热成型过程需求。在热成型过程中需要避免时间过长导致晶粒长大及韧性变差。
In general, high temperature thermoforming is adopted in the manufacturing of 13MnNiMoR thick plate for boiler drum. During the process, the delivery condition of steel plates is damaged, mainly because of the conspicuous decline in toughness at low temperature, which requires further heat treatment for recovery. The samples of 100 mm 13MnNiMoR steel plates produced by Xiangtan Steel were put into the simulation tests of different thermoforming techniques. Through the tests, their microstructure and properties were analyzed. The results show that the microstructure and properties of the steel plates vary after thermoforming at disparate temperatures. The 13MnNiMoR thick plate developed by Xiangtan Steel meets the requirements of thermoforming set by boiler manufacturers. In thermoforming, grain growth and toughness weakening attributed to excessive time must be avoided.
作者
邓汉
杨文志
汤玥
张计谋
汪后明
DENG Han;YANG Wenzhi;TANG Yue;ZHANG Jimou;WANG Houming(Xiangtan Iron and Steel Co., Ltd. of Hunan Valin, Xiangtan 411101, China;School of Materials Science and Engineering of Central South University, Changsha 410083, China)
出处
《金属材料与冶金工程》
CAS
2018年第3期9-12,28,共5页
Metal Materials and Metallurgy Engineering
基金
湖南省战略性新兴产业科技攻关类项目(2016GK4036)
