The material of a cast impeller is aluminum silicon alloy zalsi9cu2mg. The cast impeller is not allowed to have casting defects such as crack, air hole, sand hole, shrinkage porosity and shrinkage cavity in actual production. According to the national standard GB / T 1173-1995, its chemical composition is...
Based on AnyCasting, the process simulation and optimization of large aluminum silicon alloy casting impeller are carried out, and the sand casting process and defects are studied. The research results show that: (1) Before the optimization of the impeller casting process, the numerical simulation results show that the solidification...
Impeller casting has excellent mechanical properties: no hot crack tendency, good impeller casting performance, small linear shrinkage, easy recovery and regeneration, environmental protection and high air tightness. It has a wide application prospect in industry. However, in the actual production of aluminum alloy castings, there will be many defects,...
According to the solidification sequence of impeller casting, the timely feeding of riser can not be obtained at the thick part in the middle of impeller casting, resulting in shrinkage casting defects. According to the RMM criterion, the defect probability distribution of the impeller casting is shown in Figure...
Draw the 3D pouring model of impeller casting process in Pro / E software, output STL file, and import it into numerical simulation software AnyCasting for numerical simulation. The casting, core and sand mold shall be made of the corresponding materials in dBASE material warehouse. The pouring time is...
Because the cast impeller is a medium-sized casting, its structure is relatively simple, and it is mass production. Its parting surface is selected to be located at the largest section of the casting, and the thick cylinders are located above, which is convenient to set the riser for the...
The shape and dimension inspection of impeller casting is to check whether the actual dimension of impeller blank casting falls within the specified dimensional tolerance zone of impeller blank casting. a. Rim roundness error Use the rotary shaft roundness measuring instrument to measure the roundness error of the inner...
In view of the current situation that the production quality of large and complex integral stainless steel casting impeller can not be guaranteed or even produced by single investment casting or sand mold casting process, a new idea of using investment mold sand mold composite casting process to solve...
Due to the thin and large number of impeller blade castings, in order to further inspect the surface and near surface of impeller blade castings, the joint between spokes and hub and rim, impeller blade castings and tooth roots for cracks, cold shuts, shrinkage porosity, shrinkage cavities and other...
According to the number of blades of this kind of impeller, the complexity of structure and the technical requirements of castings, the production and research of this kind of impeller are also divided into simple and complex aspects. a. Research status of impeller casting technology with simple structure and...