摘要
分析了海绵钛残留氯化镁对钛及钛合金熔铸的影响。在钛及钛合金铸锭生产过程中,由于氯化镁吸湿现象导致压制的电极块出现白色析出物、一次锭表面有潮湿的黑斑以及真空系统内沉积物水化等现象。残留氯化镁对真空熔炼及设备的危害主要有:①增大发气量,降低熔炼真空度;②使铸锭气体杂质含量偏高,气孔增加;③使铸锭中残留的高熔点颗粒增加;④腐蚀真空系统,降低设备寿命。最后对出现的问题,提出了相应的预防措施。
The influence of residual magnesium chloride in sponge titanium on casting of titanium and its alloys has been studied. The results show that during the casting process, white precipitates were found on the electrode surface, while humid black spots appeared on the primary ingot and precipitates inside vacuum system hydrated, due to the moisture absorption of magnesium chloride. Damages to the vacuum system and equipments were mainly as follows ： ①increased gas generation to lower vacuum of the system; ② more gas impurities in ingots, then higher porosity; ③in- creasing retained particles with high melting point; and ④ vacuum system corrosion to decrease life span of equipments. And measures were raised to prevent occurred problems.
出处
《钛工业进展》
CAS
2014年第2期32-35,共4页
Titanium Industry Progress
关键词
海绵钛
氯化镁
电极
钛铸锭
sponge titanium
magnesium chloride
electrode
titanium ingot
