我公司有一台ψ2.5×10m盘塔式机械立窑,1988年7月正式投产,使用两年后发现立窑产量降低,卸料能力差,粒度大,料封管锁风不好,经常造成跑风现象,有时还造成细颚破卡料停机,严重影响生产。经分析认为是盘塔上凸齿磨损、卸料能力减弱所致,因此需要更换盘塔。但由于卸料盘塔的材料为中碳钢铸造,凸齿与盘塔铸成一体,属于大型铸件,整件重约4～4.5t,更换一次一般需要停机20～25天,影响生产 My company has a ψ 2.5 × 10m Pan tower mechanical shaft kiln, formally put into operation in July 1988, the use of two years later found that lower shaft kiln output, poor discharge capacity, large particle size, the material is not good seal lock tube, often Resulting in running wind phenomenon, and sometimes cause fine jaw breaking card material downtime, seriously affecting the production. The analysis shows that the convex teeth on the disc wear, unloading due to weakened, so need to replace the disc tower. However, the material of the unloading tray tower is made of medium carbon steel and the convex teeth are cast into one with the tower. It belongs to the large castings, and the whole part weighs about 4 ~ 4.5t. Generally, it needs to be shut down for 20 ~ 25 days after changing, affecting the production