摘要
本文介绍了TC11钛合金及其热处理工艺,针对生产实际中TC11钛合金抗拉强度低、伸长率不合格及去应力退火氧化严重的问题,结合实验和生产过程中真实案例,分析了空冷不正确、加热温度高和真空退火炉漏气等原因,并提出改进措施。结果表明,在双重退火流程后的空冷环节,加快散热速度可以抑制不良结构的形成,从而提高抗拉强度。同时应降低第一次加热温度以提高伸长率。此外,应提高真空炉的密封性,避免制件在去应力退火的过程中被氧化。最后,本文提出了工艺规程细化、合理安排生产和加强人员的质量意识三项措施,保证了TC11钛合金热处理质量的稳定可靠。
In this paper,TC11 titanium alloy and heat treatment process are introduced.In view of the problems of low tensile strength,unqualified elongation and serious oxidation during stress relief annealing of TC11 titanium alloy in production practice,combined with experiments and real cases in production process,the causes of incorrect air cooling,high heating temperature and air leakage of vacuum annealing furnace are analyzed,and some improvement measures are put forward.The result show that in the air cooling link after the double annealing process,increasing the heat dissipation rate can restrain the formation of bad structure and improve the tensile strength.At the same time,the first heating temperature shall be reduced to increase the elongation.In addition,the tightness of the vacuum furnace should be improved to avoid oxidation of the parts during stress relief annealing.Finally,three measures including refining the process specification,arranging the production reasonably and strengthening the quality awareness of the operators are taken to improve the process.The stability and reliability of heat treatment quality of TC11 titanium alloy are ensured.
作者
王雨辰
毛喆
WANG Yu-chen;MAO Zhe(Northwestern Polytechnical University,QMUL Engineering School,Xi'an Shaanxi 710129,China;Zhengzhou Aircraft Equipment Co.,Ltd.,Zhengzhou Henan 450005,China)
出处
《热处理技术与装备》
2023年第2期38-41,共4页
Heat Treatment Technology and Equipment
关键词
钛合金
热处理
空冷
质量
titanium alloy
heat treatment
air cooling
quality
