Casting a lot of types, according to the modeling method used to be divided into: ordinary sand casting, including wet sand, dry sand and chemical hardening sand 3. The special casting, special casting press molding materials can be divided into natural mineral sand as the main materials (such as casting, mud casting, casting, vacuum casting, shell mould casting workshop, mold casting, ceramic mold casting etc.) special casting and metal as the main materials (such as metal mold type casting, pressure casting, continuous casting, low pressure casting, centrifugal casting, etc.) two. The casting process usually includes: cast (liquid metal castings become a container solid preparation, mold) according to the material used can be divided into sand, metal, ceramic, clay, graphite, according to the frequency of use can be divided into single type, semi permanent and permanent mold, mold preparation is the main factors affecting the quality of castings; casting the melting and casting of metals, metal (alloy) main cast iron, cast steel and cast nonferrous alloy castings; the processing and inspection, casting processing cores and casting surface including the removal of foreign body, resection of sprue, grinding burrs and fash protrusions and heat treatment plastic, anti rust and rough machining etc..
Forging is the processing method that uses the forging press to apply pressure to the metal blank to make the plastic deformation to obtain the mechanical property, shape and size. One of the two components of forging. By forging can eliminate cast loose, metal welding holes, the mechanical properties of forgings generally better than the same materials of casting. In the machinery of high load, the working conditions of the important parts, in addition to the shape of the more simple rolling plate, profiles or welding parts, the use of forging.
Forging can be divided into: open forging (free forging). The use of impact force or pressure to the metal in the upper and lower two iron (anvil) between the deformation in order to obtain the required forging, mainly manual forging and mechanical forging two. Closed die forging. The metal blank is deformed by compression deformation in the forging die bore with a certain shape, and can be divided into die forging, cold forging, rotary forging, extrusion, etc.. According to the deformation temperature forging can be divided into hot forging (processing temperature is higher than the recrystallization temperature of the billet metal), warm forging (below the recrystallization temperature) and cold forging (room temperature). Forging materials are mainly composed of carbon steel and alloy steel, followed by aluminum, magnesium, titanium, copper and other alloy. The original state of the material is a bar, ingot, metal powder and liquid metal. The ratio of the cross-sectional area of the metal to the area of the die after deformation is called the forging ratio. It is very important to correctly choose the forging ratio to improve the product quality and reduce the cost.
More parfect casting factory news ,welcome to visit website :http://www.casting-forgings.com to know more
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Author : steve fay |
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