Scientific

The process of PS rapid investment casting based on selective laser sintering was studied. Starting from the process of rapid

Through the actual observation of the casting, it is found that the appearance of the diffuser casting is complete, and

From the actual casting results of trial casting, it can be found that the upper part of the diffuser blade

The diffuser shell adopts high strength ceramic shell process, which is composed of surface layer, transition layer and back layer.

ProCAST simulation software was used to simulate the gating system, and the temperature field changes and casting defects during filling

UG software is used to save the designed initial gating system file in x-t format and import it into the

Mainly through the trial production of rapid investment casting process, including: gating system design; casting simulation pretreatment settings; numerical simulation

The size correction of the typical complex diffuser was completed by using magic software. Through the analysis of the size

Combined with the rule of dimension error transfer from CAD model to one-time wax impregnation, the dimension shrinkage in X

Based on the rule of dimensional error transfer and reverse engineering, the 3D digital scanning of complex parts after one

For the SLS fired specimens, the specific dimensions are shown in Figure 1. The size of the sample for selective

As for specimen selection, Wang Danni of Wuhan University of science and technology used finite element analysis and BP neural

Because the sintered materials are mainly thermoplastic polymer materials and their composites, under the action of laser, the powder absorbs

In SLS rapid investment casting process, there are SLS prototype preparation, SLS prototype post-processing and alloy casting solidification process, and

Based on the process of rapid investment casting, the source of dimension error in the process of rapid investment casting