1. Improvement of cavity arrangement process As shown in the figure, the improved ductile iron casting process changes the original strip arrangement into a star arrangement. The star arrangement is relatively concentrated, and heat sources are added to each other at the outer wall. The heat dissipation rate of...
1. Analysis of cavity layout process The ductile iron casting process (see Figure) is divided from one end. All the ductile iron castings are in the lower box. There are 8 castings in one box. The left and right rows are arranged in a strip pattern. There are 4...
At present, the nut of testing machine produced by our company is easy to produce shrinkage cavity and porosity defects, and the reject rate is more than 60%, but the yield is low. Based on this situation, process improvement is required. The screw nut belongs to medium wall thickness...
A total of 25 planet carriers were produced in 10 batches by using the optimized casting process plan. Except for one piece with cracks on the cutting surface due to improper cutting riser, no macro defects such as porosity, shrinkage cavity and cracks were found on the remaining castings...
In order to cut the area with casting defects in the casting diaphragm, it is necessary to first understand the characteristics of the casting diaphragm defect area, including the size, distribution, depth, etc. of the defect area. The inspection shows that in the casting defect area of the diaphragm,...
During the operation of the unit, the left and right sides of the casting diaphragm will produce stress under different pressures. If the stress is too large, the gap position between the diaphragm and the casing will be damaged. If the axial and radial deformation of the casting diaphragm...
Cast grinding ball is a kind of wear-resistant product with a large amount of applications in nonferrous metal and metallurgical mines, cement building materials, power generation and other industries. At present, the main cast balls used in the mills in China are: high and low chromium cast iron grinding...
1. Optimization of gating system size Compared with the original process, in addition to the change of gate position, the biggest difference between the casting process gating system and the original process is the size of the sprue. According to the above knowledge, the design of the stepped gating...
As the main carbon dioxide emission source of manufacturing industry, sand casting technology plays an important role in energy conservation and emission reduction. Using a novel constrained rapid induction melting single spray casting process instead of the traditional sand casting process can save 21% of materials and reduce 57%...
In the past century, the continuous change of global climate has been a hot topic, and the impact of climate anomalies on human life has begun to highlight. Human beings live in the global climate environment. Any change in climate will have an impact on all aspects of human...