铸钢用新型保温补贴材料研究  

Study on a New Type of Insulating Pads Material for Steel Casting

作　　者：王小路[1] 黄晋[1] 龙威[1] 张友寿[1] 夏露[1] 

机构地区：[1]湖北工业大学绿色轻工材料湖北省重点实验室,湖北武汉430068

出　　处：《铸造》2016年第10期945-949,共5页Foundry

基　　金：湖北省自然科学基金项目(2014CFB582)

摘　　要：以闭孔珍珠岩为保温骨料、以铝矾土为耐火骨料、钾长石为烧结剂、钠基膨润土为成形剂,研究一种保温补贴材料。通过正交试验和优化试验,确定最佳制作方案为:铝矾土100%(其他材料为占铝矾土质量分数),闭孔珍珠岩40%,钠基膨润土15%,钾长石40%,水(占粉料总质量分数)18%~25%,烧结温度1 250℃,烧结时间120 min。这种保温补贴材料的抗压强度为3.61 MPa,体积密度1.135 g/cm^3,吸水率21.8%,热导率0.257 W/(m·K)。并对其材料的微观形貌进行了观察和分析,探讨了保温补贴材料的烧结机理。A kind of insulating pads material was researched by using closed-cell perlite as insulation aggregate, bauxite as refractory aggregate, potassium feldspar as sintering agent, sodium bentonite as forming agent. The optimum scheme of this insulating pads was bauxite for （wt）100% （other materials accounted for the mass fraction of bauxite） , closed-cell perlite （wt）40%, sodium bentonite （wt）15%, potassium feldspar（wt）40%, water（wt） 18%-25% （accounting for the total mass fraction of powder） , the sintering temperature was 1 250 ℃, and the sintering time was 120 min by the orthogonal experiment and optimization experiment. The performance indicators of the insulating pads material under this scenario were： compressive strength 3.61 MPa, bulk density 1.135 g/cm3, water absorption 21.8%, thermal conductivity 0.257 W/（m ·K）. The microstructure of pads material was observed, and the mechanism of performance pads material was explored.

关 键 词：铸钢 保温补贴材料 工艺方案 闭孔珍珠岩 铝矾土 钾长石 

分 类 号：TG260[金属学及工艺—铸造]