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  • Preheating treatment of aluminum castings before welding
  • Editor：Hangzhou Hongcheng Pml Precision Mechanism LtdDate：2016-03-24 16:35 Click：
 ", " "; aluminum products are widely used in life and work, Hangzhou Hongcheng Pml Precision Mechanism Ltd through the aluminum, aluminum alloy, casting, casting, casting process, made into all kinds of aluminum casting products.
    aluminum casting welding often use the repair welding process, the main part of the repair welding of aluminum products rechecked, aluminum casting defects should be mechanically cleaned. The preheating of aluminum castings is required before the cast aluminum is repaired.
    the preheating of aluminum castings before welding depends on the thickness of the casting material, the wall thickness of the repair welding parts and the processing stage. When the wall thickness of the repair welding parts is greater than 10mm, the aluminum castings generally need to be preheated as a whole or locally. For the aluminum alloy castings which can not be heat treated, the preheating temperature is not more than 150 degrees C, the heat preservation time is not more than 2h. for the aluminum alloy castings which can be heat treated. The preheating temperature does not exceed the aging temperature, and the heat preservation time is not more than 2H.
aluminum castings