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Metal Casting Raises Labor Productivity

Jul 28, 2017



Metal casting, commonly known as hard die casting, is made of cast iron, steel or other metal materials, and the process of casting molten metal into the mold under gravity. Because a pair of metal life long, can be poured thousands of or even tens of thousands of times, so metal casting is also known as permanent casting.

Pressure casting, low-pressure casting, squeeze casting, centrifugal casting, continuous casting, vacuum casting and other casting methods, Metal Casting although the use of metal mold, but because the metal liquid is not under the gravity of the filling, so each formed a separate category of special casting methods.

The characteristics of metal casting are as follows.

(1) There is a higher dimension precision (it12~it16) and a smaller surface roughness (Ra6.3μm~12.5μm), the machining allowance is small.

(2) Because of the good heat conductivity of metal type, Metal Casting the cooling speed is fast, the grains of the castings are finer and the mechanical properties are good.

(3) can realize "one type multiple casts", raise labor productivity. and save molding materials, can reduce environmental pollution, improve working conditions.

Metal casting is mainly used for mass production of non-ferrous castings such as copper alloy and aluminum alloy, such as piston, connecting rod, cylinder head, bushing, bushing, etc. Cast iron parts of the metal casting has also developed, but its size limit within the MM, the quality of not more than 8kg, Metal Casting such as the bottom of an electric iron.

The characteristics of metal casting are as follows.

(1) There is a higher dimension precision (it12~it16) and a smaller surface roughness (Ra6.3μm~12.5μm), the machining allowance is small.

(2) Because of the good heat conductivity of metal type, Metal Casting the cooling speed is fast, the grains of the castings are finer and the mechanical properties are good.

(3) can realize "one type multiple casts", raise labor productivity. Metal Casting and save molding materials, can reduce environmental pollution, improve working conditions.

However, the trade network points out that the manufacturing cost of metal mold is high, and it is not suitable to produce large and complex thin-walled castings. Because of the fast cooling speed, the surface of cast iron is easy to produce white mouth, which makes cutting difficult. Metal Casting The alloy with high melting point is not suitable for metal casting because of the limited melting point of metal material.

Metal casting is mainly used for mass production of non-ferrous castings such as copper alloy and aluminum alloy, such as piston, connecting rod, cylinder head, bushing, bushing, etc. Cast iron parts of the metal casting has also developed, but its size limit within the MM, the quality of not more than 8kg, such as the bottom of an electric iron.


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