影响钛及钛合金管材真空热处理质量的因素分析

针对实际生产过程中，钛及钛合金管材真空退火表面氧化严重、性能不稳定现象，从热处理炉真空度、管材除油酸洗质量、退火炉清洁度、退火装炉方式对管材退火表面质量、性能及组织的影响进行分析。结果表明：退火炉真空度高于1x10～Pa、退火前管材干净干燥及退火炉干净清洁可以改善管材的退火质量；一选用料架中间位置加层隔档的方式装炉，可使管材各区域受热均匀，获得均匀的力学性能及显微组织。

Analysis on Factors Influencing on Quality of Vacuum Heat-Treated Titanium and Titanium Alloy Tubes

After being vacuum annealed, there were serious oxidized scales on the surface of titanium and ti tanium alloy tubes and the mechanical performances of the tubes were not stable. Aiming at these problems, the influences of vacuum degree, quality of degreasing and pickling, cleanliness of vacuum annealing furnace and fur nace charging way on the surface quality, mechanical properties and microstructure of tubes after being annealed were studied. The results showed that vacuum degree of more than clean and dry tubes and vacuum an nealing furnace before being annealed of tubes can improve the surface quality of annealed tubes. Increasing par titions in the middle of skid bed when furnace charging, tubes can be heated uniformly and uniform mechanical properties and microstructures can be achieved.