论文部分内容阅读
目前国内熔模铸造中蜡模直浇口的制造方法有三种:压蜡法、挂蜡法、自由浇注法。其中,前两种方法应用不多。自由浇注法是将熔化的模料自由浇入浇口模内,待冷却凝固后取出即可。用此法制得的蜡模直浇口强度高,而且操作简单,因此应用较广泛。我厂一直采用自由浇注法制造蜡模直浇口。1970年以前是用两半铝制金属模,由于模具冷却速度慢,而且是手工取模,所以生产率低,劳动条件差,操作工人经常弄一身高温
At present, there are three manufacturing methods for wax mold sprue in investment casting: pressure waxing, waxing and free casting. Among them, the first two methods are not much used. Free casting method is to melt the mold freely poured into the gate mold, to be solidified after cooling out. The wax mold sprue obtained by this method has high strength and easy operation, so it is widely used. Our factory has been using free casting wax mold straight gate. Before 1970, two half aluminum molds were used. Due to the slow cooling of the molds and the manual mold-making, the productivity was low and the working conditions were poor. Operators often got high temperatures