elevator castingYongxing foundry is a collection of casting, machining large-scale foundry enterprises...
Agricultural machinery spare partYongxing foundry is a collection of casting, machining large-scale foundry enterprises...
Agricultural machinery spare partYongxing foundry is a collection of casting, machining large-scale foundry enterprises...
mining machinery castingYongxing foundry is a collection of casting, machining large-scale foundry enterprises...
hand wheelYongxing foundry is a collection of casting, machining large-scale foundry enterprises...
compressor body coverCasting process:, resin sand, precoated sand Machining : turning/ mill/drill/bore/grin...
valve coverYongxing foundry is a collection of casting, machining large-scale foundry enterprises...
flangeYongxing foundry is a collection of casting, machining large-scale foundry enterprises...Ball production process of ductile cast iron, heat treatment, blast cleaning or machining often found some diameter is about 0.5-3mm, the shape is spherical, elliptical or needle shaped hole smooth wall holes, these holes in the casting under the epidermis of 2-3mm distribution, which is called the blowhole.
The formation of the pinhole is due to the surface tension of liquid iron and magnesium, easy to form the oxide film, the gas discharge and precipitation hinder gas invasion have a certain influence, these gases will form pores in the subcutaneous retention. In addition, the formation of the gas channel was blocked earlier by the solidification characteristics of nodular cast iron, and it also can promote the formation of the defects of the skin pores.
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