ing refers to the use of clay bonded sand for casting, molding materials production is the process method has a long history, is also the most widely application scope.
With a long history dating back to thousands of years ago;
Its application scope, can be said that there is no place not all over the world.
Below, parse the kinds of foundry casting for you.
Casting a lot of more phyletic, the modelling method is traditionally divided into: 1, the ordinary sand mold casting, including green sand mold, dry sand mold and chemical hardening sand mold 3 classes.
2, special casting, press 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 foundry, negative pressure casting, mold casting, ceramic mold 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. )
According to the molding process can be divided into: 1, gravity casting, sand casting, permanent mold casting.
Relying on gravity to molten metal liquid poured into the cavity.
2, pressure casting, low pressure casting, pressure casting.
Rely on additional pressure to press the molten metal liquid instantly into casting mould.
Casting process usually includes: (1) cast (
Make liquid metal solid casting container)
Preparation, casting according to the materials can be divided into sand mold, metal, ceramic, mud, graphite, etc. , can be divided by use disposable, semi permanent and permanent type, mold preparation quality are the main factors influencing the casting quality;
(2) cast metal melting and pouring, casting metal (
Main cast iron, cast steel and casting non-ferrous alloy;
(3) casting processing and inspection, foreign body casting processing including removal of core and the casting surface, remove poured riser, shovel grinding burrs and phi seam protruding content and heat treatment, such as plastic, rust and rough machining and so on.
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