1. Selection and determination of detection method As a key part of the pump body, the impeller of desulfurization pump rotates around the main shaft at high speed when the pump is running. In order to make the pump run smoothly, it is necessary to make the balance quality...
The surface of the blade of the sulfur pump impeller and the surface of the blade are calculated to achieve the ideal result of hydrodynamic distortion. The foam cutting can not be used. The foaming molding is used in this paper. The precondition of die making is the three-dimensional...
Coating configuration and drying is one of the important links to obtain high quality castings. The role of sand casting coating is to reduce the surface roughness of castings, prevent or reduce the sand sticking of castings, which is conducive to improving the efficiency of sand removal. After using...
It is beneficial to obtain castings with clear contour, precise shape, smooth surface and intact internal structure by mastering the pouring process and reasonable pouring operation. Therefore, the whole pouring process should follow the following principles: (1) The ladle shall be dry, and the ladle can only be connected...
Before molding, assemble the core box according to the requirements, pay attention to the assembly sequence and the positioning of the foam blade. The assembly process is as shown in the figure: The impeller is made of self hardening resin sand. After the sand, liquid resin and liquid catalyst...
1. Foam mold size determination The design of foaming mould mainly includes the following aspects: determining the size parameters of foaming mould, designing the cavity surface of mould, designing the thin shell structure of mould, designing the structure of mobile mould, designing the core block and core pulling mechanism,...
The production impeller adopts the EPC resin sand composite molding process to obtain the whole sand core, which improves the precision of the casting impeller and reduces the labor intensity of the workers. The key to obtain the high quality sand core is the core box. The original wooden...
The production difficulty of impeller mainly lies in the whole molding process. Using traditional casting technology, it is difficult to obtain the whole sand core with wood mold or metal mold. In order to improve the production efficiency, a new casting process must be adopted. At present, the main...
Technical requirements for impeller production (1) The surface of the casting shall be smooth and free from defects such as pores and sand holes; (2) Five blades should be evenly distributed; (3) The unbalanced mass is less than or equal to 80g; (4) The hardness of heat treatment is...