Method for restoring surface defects of casting machine after machining
A repair method and machining technology, applied in the field of repairing parts defects
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[0016] This embodiment is used to explain the claims, and any changes made by those skilled in the art according to the technical solution of the present invention that are different from the specific operations of this embodiment belong to the protection scope of the present invention.
[0017] The main defects appearing on the surface of castings after machining
[0018] Porosity - is the hole formed by gas accumulation on the surface and inside of the casting. The shape, size, and position of the pores are different. They are round or oval pores with smooth or bright surfaces. There are two types of scattered and concentrated pores. They are mainly distributed in the thick parts inside the casting and the horizontal parts of the surface of the casting (subcutaneous pores ), where the subcutaneous pores are exposed after machining, and larger pores will affect the bearing capacity, dimensional accuracy and aesthetics of the part.
[0019] Shrinkage cavity (shrinkage porosit...
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