![]() ![]() Eventually, after the foundry adopting the second version of casing system, the percentage of unqualified casting products decreased from 20% to about 10%. Each version of simulation focuses on the temperature variation, velocity variation, the porosity, and the track of the liquid by using the tracer control points. Those include extending the diameter of the sprue from 46mm to 50mm to get a steady, faster flow, changing the original semi-sphere-shaped sprue base into a cylinder shape, and shortening the filling time from 6s to 5s. In the first version, the cause of those defects is highlighted in the second version, optimization of the casting system is conducted on the basis of the first simulation and analysis work. Two versions of simulation work are completed in total. The root of these defects is detected and analyzed via the simulation work on the filling and solidification process using the Magma foundry simulation software. Shrinkage, air hole and some other defects are found in some shell castings of a type of turbocharger products. ![]()
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