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  6 мая 2022 г.

  Causes of Investment Casting Defects
  1. There are more than 40 processes in the whole casting process, the process is complex, and there are many technological factors that affect the casting quality.
  2. There are many kinds of raw and auxiliary materials, such as silica sol, wax, zircon sand, molybdenum powder, defoamer, wetting agent, steel, rare metals, etc. According to different mesh numbers, there are more than 10 kinds of sols, including precision casting surface silica sol, precision casting backside silica sol, ordinary silica sol, enhanced silica sol, quick-drying silica sol and zircon powder. It is not suitable to control its quality, which affects the quality of castings to varying degrees.
  3. The production cycle is long and there are many uncontrollable factors. Of the whole process, only the shell making process takes 3-5 days. It takes 6-8 hours to dry the surface shell of the silica sol, 4-6 layers to dry the back shell of the silica sol, and 8-12 hours to dry the shell without the silica sol. There are too many uncontrollable factors, and a slight deviation in the process operation will cause defects.

  
  

  For more investment casting defect causes and remedies, click here.

  
  

   

  Causes of Investment Casting Defects
  1. There are more than 40 processes in the whole casting process, the process is complex, and there are many technological factors that affect the casting quality.
  2. There are many kinds of raw and auxiliary materials, such as silica sol, wax, zircon sand, molybdenum powder, defoamer, wetting agent, steel, rare metals, etc. According to different mesh numbers, there are more than 10 kinds of sols, including precision casting surface silica sol, precision casting backside silica sol, ordinary silica sol, enhanced silica sol, quick-drying silica sol and zircon powder. It is not suitable to control its quality, which affects the quality of castings to varying degrees.
  3. The production cycle is long and there are many uncontrollable factors. Of the whole process, only the shell making process takes 3-5 days. It takes 6-8 hours to dry the surface shell of the silica sol, 4-6 layers to dry the back shell of the silica sol, and 8-12 hours to dry the shell without the silica sol. There are too many uncontrollable factors, and a slight deviation in the process operation will cause defects.

  For more investment casting defect causes and remedies, click here.