带式冷却机齿圈,材质为ZG45,毛重1650kg,最大热节T=92mm。该件采用刮板造型、齿和齿槽用组芯形成(如图所示)。长期存在的问题是,齿槽内表面严重粘砂,给铸件清理和机械加工带来很大困难。最严重时,使铸件报废。为此,我们采取了工艺改进措 Belt cooler ring gear, made of ZG45, gross weight 1650kg, the maximum heat section T = 92mm. This piece is of the form of a blade, with teeth formed in the core of the gullet (as shown). The long-standing problem is that there is a serious sticky surface on the inner surface of the cogging, which brings great difficulties to the cleaning and machining of castings. The most serious, so that castings scrapped. To this end, we have taken measures to improve the process