Casting is a liquid metal casting
to match the shape of parts with the casting cavity, after waiting for the cooling and solidification, for parts or method of blank.
Casting are mainly sand mould casting and special casting 2 broad categories.
A, the ordinary sand mold casting, the use of sand as mold material, also known as sand casting, aluminum casting, including green sand mold, dry sand mold and chemical hardening sand mold 3 classes, but not all are available in the casting.
Advantage is lower cost, because the sand mold use reusable;
Defect is mold making time-consuming, mold itself can not be repeated use, must be destroyed after the finished product can be achieved.
1, the sand mold casting method: green sand machine modelling method, self-hardening resin sand molding and core-making, sodium silicate sand molding and core-making, dry type and table dry type, type casting, negative pressure molding, manual.
2, sand core manufacturing method: according to the sand core production batch size, shape, and the specific production conditions to choose.
In production, in general can be divided into manual core and core making machine.
Second, the special casting, according to the molding materials and can be divided into natural mineral sand as the main special casting molding materials (
Such as investment casting, mold casting, shell mold casting, pressure casting, mold casting, ceramic mold casting, lost foam casting, etc. )
And metal as the main mold material of special casting (
Such as metal mold casting, pressure casting, continuous casting, low pressure casting, centrifugal casting, etc. )
1, the metal mould casting process of the raw materials of high melting point metal production mold.
The subdivided into gravity casting, low pressure casting method and high pressure casting method.
Under the control of the melting point of mold, can be molten metal is also limited.
2, lost wax casting method, this method can be as the outer membrane casting method and the solid casting method.
To copy wax casting items required first, and then into the pool with ceramic and stay dry, make with wax replica of the complex on a layer of ceramic outer membrane, repeat steps until enough to support casting process (outer membrane
About a quarter inch to 1/8 inch)
Die, and then melting the wax and smoke from the mold.
Then mold need to high temperature for many times, enhance behind the hardness could be used in the casting.
See here, I believe you have a certain knowledge of casting molding method.
Of course, if you want to know the foundry process, might as well stay focused on us!
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