镁合金消失模铸造涂料的研究  

Study on LFC Coating of Magnesium Alloys

作　　者：谭香玲[1] 胡新华 伊向文 张洪[1] 

机构地区：[1]湖南铁路科技职业技术学院,湖南株洲412006 [2]株洲九方铸造有限责任公司,湖南株洲412006

出　　处：《热加工工艺》2015年第11期79-82,共4页Hot Working Technology

基　　金：湖南省教育厅科研项目(13C600)

摘　　要：针对镁合金消失模铸造特点,选择云母粉、硅藻土、滑石粉作消失模涂料的耐火骨料,CMC及凹凸捧土作悬浮剂,硅溶胶及膨润土作复合粘结剂,水作载液,并添加阻燃剂,确定耐火骨料的颗粒级配。通过正交试验,选出涂料的最佳配方。通过性能测试与浇注试验,与外购消失模涂料对比,表明研制的涂料能有效避免浇注过程中镁合金燃烧,有利于镁合金消失模充型,避免浇不足、冷隔等缺陷,具有很大的应用价值。Considering the characteristic of magnesium alloys lost foam casting, choosing mica powder, diatomite, talcum powder as refractory aggregate of EPC coating, CMC and attapulgite as suspending agent, silica sol and adhesive as binder,water as carrier liquid, and adding a flame retardant, the particle size distribution of refractory aggregate was determined. By orthogonal test, the best formulation for coating was selected. Through the test and performance test of casting, compared with imported coating, the developed EPC coating can effectively avoid the magnesium alloy casting combustion, in favor of magnesium alloy lost foam filling, avoiding misrun and cold septal defects, which has great application value.

关 键 词：镁合金 消失模铸造 涂料 

分 类 号：TG222[金属学及工艺—铸造]