我厂生产的起重设备和减速机上的轮形钢件,工艺出品率低,平均为50％,最低35％,钢水消耗大,成本高。为此我厂从75年开始对倾注工艺进行分析研究和试验。现已成功地在几十种轮形铸钢件上应用,效果良好,平均工艺出品率提高10％。现将试验情况简述如下。一、倾注设计原理: 根据铸钢件的凝固特点,为获得致密的铸钢件,通常采用顺序凝固,使缩孔集中在冒口里。倾注正是利用改变浇注位置来控制顺序凝固的。轮形件由水平浇注改为倾斜浇注,整个轮缘只放一个冒口,人为地造成一个冷却末端区,使凝固时温度梯度加大。同时通过倾斜角 I plant the lifting equipment and reducer wheel steel, craft production rate is low, with an average of 50%, a minimum of 35%, consumption of molten steel, high cost. To this end I plant from 75 years on the pouring process analysis and testing. Has been successfully applied in dozens of round steel castings, the effect is good, the average process yield increased by 10%. Now the test situation is as follows. First, the pouring design principle: According to the solidification characteristics of steel castings, in order to obtain a dense cast steel, usually using the order of solidification, so that shrinkage hole concentrated in the riser. Pouring is the use of changing the casting position to control the order of solidification. Wheels from horizontal casting to tilt casting, the entire rim only put a riser, artificially created a cooling end zone, so that when the temperature gradient increases solidification. At the same time through the tilt angle