The prediction of shrinkage defects in sand castings during solidification is mainly realized by using shrinkage defect criterion. Shrinkage porosity defects are generally related to the speed of solidification process, the size of section and alloy composition. When the shrinkage rate of each element is divided by the critical...
The complete production process of a casting product includes product design, process design, casting blank production, heat treatment and machining. If there is a problem in any stage, it may lead to the quality problem of the final steel casting, which requires quality control in the process. Process control...
The shrinkage porosity and shrinkage cavity defects in the production of Wet Mold clay sand steel castings are mainly related to the unreasonable process design, improper riser position and size, and the failure to place cold iron and quenched chrome ore in key parts. Shrinkage porosity and shrinkage cavity...
Bowl lining steel castings are the products produced by the machinery factory of Shougang Mining Company. The material is wear-resistant steel. Due to the special working environment of the bowl shaped lining, it is required to have strong wear resistance, and shrinkage and shrinkage defects are not allowed inside....
The practical and reliable criterion of shrinkage porosity and shrinkage cavity defect is the most key content for the accurate prediction of shrinkage porosity and shrinkage cavity defect. Through the above analysis, the main defect prediction criteria at present. Recent studies have shown that there are many factors affecting...
More advanced methods are adopted to accurately predict the shrinkage cavity and porosity defects in the solidification process of steel and iron castings. The application of display list, alternating refresh and double buffer technology to complete high-quality dynamic display and observation, greatly enhance the performance of dynamic observation simulation...
The display of target data such as casting defects is an important part of 3D data field visualization of numerical simulation software. At this time, if the solid display of sand castings is used, the user cannot see the target data inside the contour. If the target data such...
For the simulation of nodular iron castings, the following simulation test is carried out by taking the actual nodular iron castings produced by ZHY Casting as an example. The quality of this nodular iron castings requires that the casting surface is smooth, and the nodular iron castings are not...
The formation of shrinkage porosity is due to the wide crystallization temperature range of the alloy, which tends to paste solidification mode. It is not solidified at the end. Due to poor feeding and unsmooth channel, shrinkage porosity defects may be formed. There has never been a very effective...
The foundry industry has a civilization history of more than 6000 years in China, and now it is facing the major challenge of the new technological revolution. As we all know, casting is an important part of machinery manufacturing industry and the mother of industry, which plays an important...