改性剂对铸造用铝磷酸盐自硬砂性能的影响  

Effect of Modifiers on Properties of No-bake Aluminium Phosphate Sand

作　　者：夏露[1] 张友寿[1] 黄晋[1] 

机构地区：[1]湖北工业大学机械工程学院,武汉430068

出　　处：《三峡大学学报（自然科学版）》2006年第3期250-252,共3页Journal of China Three Gorges University：Natural Sciences

基　　金：湖北省自然科学基金(2005ABA056)

摘　　要：通过向传统的铝磷酸盐粘结剂中加入含镁改性剂和含硼改性剂,研究了改性剂对铝磷酸盐自硬砂性能的影响.结果表明:加入含镁改性剂会使磷酸盐自硬砂的室温抗压强度下降,适量的含镁改性剂能有效地提高磷酸盐自硬砂的抗吸湿性;含硼改性剂能有效地提高磷酸盐自硬砂的室温抗压强度,对其抗吸湿性影响不大,适量的含硼改性剂能提高铝磷酸盐粘结剂的稳定性.The effect of magnesium-containing modifier and the boron-containing modifier on the properties of the no-bake aluminium phosphate sand is studied. The modifiers are added into the aluminium phosphate binder. It is revealed that the room temperature compressive strength of no-hake sand is reduced by adding the magnesium-containing modifier; the humidity resistance is improved effectively when the amount of the magnesium-containing modifier is appropriate. The room temperature compressive strength of no-bake sand is improved by adding the boron-containing modifier; the humidity resistance is effected little. The stability of the aluminium phosphate binder is improved when the amount of the boron-containing modifier is suitable.

关 键 词：改性剂 铝磷酸盐粘结剂 自硬砂 室温抗压强度 抗吸湿性 稳定性 

分 类 号：TG113.261[金属学及工艺—物理冶金]