封口墙板裂纹的防止

Prevention of Cracking Defect of Sealing Wall Plate

封口墙板结构复杂、壁薄,铸造时易出现裂纹缺陷。通过降低材料牌号,使用呋喃树脂自硬砂取代粘土制芯,延长铸件在型内冷却时间,使裂纹缺陷问题得到解决。

The sealing wall plate is a casting with complicated construction and thin section,the crack-ing is the defect often taking place in casting production process.By decreasing the grade of cast iron,using furan resin selfsetting sand as a substitute for clay sand to make the core and prolonging cooling time in mould,the cracking problem has been solved.