江苏省无锡建华机床厂熔模精密铸造车间,试制成功了空心浇口模壳,大大地缩短了脱蜡时间,从而保证了模壳的强度。制作空心浇口模壳用的浇口棒带有1°～1°10′斜度。制作时,先将浇口棒接触蜡液部分用皱纹纸包上二层,纸的光面朝棒,皱纹面朝外;然后将包皱纹纸部分插入蜡液中,涂料 Jianhua Machine Tool Plant in Wuxi City, Jiangsu Province Investment Casting Precision Casting Workshop, trial success of the hollow gate mold shell, greatly reducing the dewaxing time, thus ensuring the strength of the mold shell. Sprue sticks for making hollow sprue molds have a slope of 1 ° to 1 ° 10 ’. Production, the first part of the wax contact with the wax rod wrapped in crepe paper on the second floor, glossy paper facing the stick, wrinkles face out; and then part of the crepe paper into the wax solution, paint