铸造技术2017，Vol.38Issue(3)：640-643,4.DOI:10.16410/j.issn1000-8365.2017.03.040
近终形连铸镍铜铸铁空心型材及其在耐磨镶圈上的应用
Hollow Cu-Ni Cast Iron Profiles Produced by Near Net-shape Continuous Casting and Its Application in Wear Rings
摘要
Abstract
The dimension of eutectic cell in the hollow near-net shape Cu-Ni cast ion produced by a vertical continuous casting is 8～10 times smaller than that in hollow Cu-Ni cast iron produced by a conventional casting,so their grain boundary area,which is channels for the atom to diffuse,will be multiplied and then the rate of A1 atom diffusing through these channels will be increased greatly,thus the layer of A1-Fe compounds will be thickened when they are welded with A1 alloy molten via infiltration.At the same time,the exposed area of the graphite in their section is only 6.5％ of the whole section,which will decrease greatly invalid welding area.The thick layer of A1-Fe compounds and the low invalid-welding area will make the welding strength of A1-Fe interface grow exponentially.Besides these,when external circle of the hollow profiles were made into a spline,the material utilization of the hollow profiles can exceed 70％,while the material utilization is below 40％ when the splines were made from the profiles produced by a conventional casting.关键词
铝活塞/耐磨镶圈/镍铜铸铁/精密连铸/绿色铸造Key words
Al piston/wear-resist tings/Ni-Cu cast iron/precision continuous casting/green casting分类
金属材料引用本文复制引用
许旸,王海生,颜国君,梁周村,白柯..近终形连铸镍铜铸铁空心型材及其在耐磨镶圈上的应用[J].铸造技术,2017,38(3):640-643,4.基金项目
陕西省教育厅产业化培育项目资助(2010JC13) （2010JC13）
陕西省自然科学基金资助项目(2015JM5217) （2015JM5217）
