As we all know, the large girth gear is a key part of the raw mill of cement equipment. The large girth gear needs to drive the entire cylinder to run for a long time. Therefore, it not only requires high mechanical properties, dimensional tolerances, and surface quality of the large girth gear but also has strict requirements on the internal quality.

As a professional large girth gear casting manufacturer, CHAENG (Xinxiang Great Wall Casting) has a wealth of casting experience and strictly controls quality during the entire casting process of the girth gear.

Due to the special shape of the girth gear, the small R area of the non-machined surface is thin. If the casting process is not appropriate, it is generally easy to have casting defects such as loose metal structure, slag inclusion, pores, coarse grains, and surface cracks during casting. 

Therefore, in the casting process, the requirements of the pouring process are strictly compounded, the molten steel produced by the refining ladle is used and the full riser pouring is used. 

In addition, before pouring, computer simulation software is used to simulate the pouring scheme in order to modify the pouring model in time, so as to better control the quality of the blank. 

The above are the problems and countermeasures of during the casting process of girth gear introduced by CHAENG. If you still have questions, you can consult us online.