Zhaoyuqi Machinery Company: Leading the innovation of shell and film casting technology, assisting in the manufacturing of high-end precision castings

Process Introduction

Shell film casting (coated sand shell casting) is a precision casting technology that uses coated sand to make high-strength shell molds, suitable for the production of castings with complex structures and high-precision requirements. Zhaoyuqi Machinery Company adopts optimized process parameters, such as pouring temperature (720-750 ℃), inflation flow rate (12-19m ³/h), vacuum degree (-0.03~-0.04MPa), etc., significantly improving the casting filling capacity and internal quality, with low porosity and high density.

Core advantages

High precision and stability: The surface roughness of the casting is low, the dimensional accuracy is close to the level of investment casting, and the internal quality can reach the first level standard of radiographic testing.

Production efficiency improvement: Compared with traditional investment casting, the shell film casting process is simplified, eliminating the need for complex dewaxing processes, shortening the production cycle by more than 30%, and reducing overall costs.

Environmentally friendly: Film coated sand can be recycled and reused, with less dust and waste emissions during the production process, in line with the trend of green manufacturing.

application area

The shell film casting technology of Zhaoyuqi Machinery has been successfully applied to complex structural components such as heat-resistant stainless steel exhaust pipes and pump valve bodies. The maximum casting weight is 200 kilograms and the thickness is 40 millimeters, serving the fields of automotive engines, industrial equipment, and high-end equipment manufacturing.