(1) Vacuum suction casting is conducive to the discharge of gas in the casting, suppresses the occurrence of turbulence and entrainment, vacuum casting services overcomes the shortcomings of low-pressure casting and differential pressure casting, and significantly improves the filling capacity of molten metal.
(2) The charging capacity is improved during vacuum suction, and the pouring temperature of molten metal can be reduced by 20-30 °C during non-specific gravity casting.
(3) Castings with poor wall thickness, thin wall and high quality requirements can be cast.
(4) Select the appropriate vacuum degree change rate and control the speed of the molten metal entering the bloodless tank, which can achieve a stable charging effect.
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