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Solutions to the problems faced by domestic precision casting products

  1. Low technological level and poor quality of precision casting products

 

  1. large casting segregation and inclusion defects are serious. Macrosegregation and coarse grain of large steel castings and ingot exist at the root of riser and thick section of casting after solidification.

 

  1. The application of simulation software is not popular. Casting process simulation is a necessary part of casting production, in foreign countries, if there is no computer simulation technology, can not get the order. China's foundry industry computer simulation started earlier, although the core computing part of the development ability is strong, but the overall software packaging ability is poor, leading to mature commercial software development far behind developed countries, quite a number of foundry enterprises to computer simulation technology, lack of trust. At present, although this situation has been improved, but in the enterprises that have purchased the casting simulation software, it is still rare to play its role, so it is urgent to train the employees of the enterprises on the application of the software.

 

  1. the production capacity of ordinary castings is surplus, the manufacturing of high precision castings is still difficult, core technology and key products are still dependent on imports.

 

  1. precision casting processing margin is large. Due to the lack of scientific design guidance, process designers with experience is difficult to control the deformation problem, casting processing allowance is generally 1-3 times larger than foreign countries. Large processing allowance, serious energy consumption and raw material consumption of castings, long processing cycle and low production efficiency have become the bottleneck restricting the development of the industry.

 

  1. The design of pouring system is unreasonable. Due to improper design, there are defects such as entrainment and inclusion, which lead to low yield and pass rate of casting.

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