The custom sprocket manufacturer tell you the difference between casting and forging
The custom sprocket manufacturer tells that cast is the basic technology of modern machinery manufacturing industry which smelt metal into liquid poured into a mold, after cooling, solidification, and cleaning, a casting (part or blank) with predetermined shape, size and performance are obtained. The cost of the casting blank is low, and it is more economical for shapes with complex inner cavities; at the same time, it has broad adaptability and well comprehensive mechanical properties. There are several materials (such as metal, wood, fuel, molding materials, etc.) and equipment (such as metallurgical furnaces, sand mixers, molding machines, core making machines, shakeout machines, shot blasting machines, cast iron plates, etc.) required for casting. And will produce dust, harmful gas and noise and pollute the environment.
The casting process usually includes:
1. Making molds, which can be divided into sand molds, metal molds, etc. according to the materials used, and can be divided into disposable, semi-permanent and permanent molds. The custom sprocket manufacturer suggests the advantages and disadvantages of mold preparation are the main factors affecting the quality of castings.
2. Melting and pouring of cast metals, mainly including cast iron, cast steel and cast non-ferrous alloys;
3. Casting treatment and inspection. Casting treatment includes removal of foreign matter on the core and casting surface, removal of pouring risers, relief grinding of burrs and seams and other protrusions, as well as heat treatment, shaping, anti-rust treatment and rough machining.
Using forging machines to apply pressure to a metal blank, make it plastically deformed to obtain a workpiece with certain mechanical properties, certain shape and size. It is called forging process.The forging process can eliminate the as-cast porosity and welding holes of the metal, and the mechanical properties of the forgings are generally better than the castings of the same material. For important parts, forgings are mostly used in machinery with high loads and severe working conditions, in addition to rolling plates, profiles or welded parts with simple shapes. The custom sprocket manufacturer tells that forging can be divided into
① open forging (free forging). Using impact force or pressure to deform the metal between the upper and lower abutting irons (anvil blocks) to obtain the required forgings, there are mainly two types manual forging and mechanical forging.
②Closed mode forging. The metal blank is compressed and deformed in a forging die cavity with a certain shape to obtain a forging, which can be divided into die forging, cold heading, 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 (lower than the recrystallization temperature) and cold forging (normal temperature). Forging materials are mainly carbon steel and alloy steel, followed by aluminum, magnesium, titanium, copper, etc., and their alloys. The original cross-sectional area of the metal to the final die cross-sectional area is called the forging ratio. Correct selection of forging ratio has a lot to do with improving product quality and reducing costs.
SHINING forged chains allow to achieve extremely high tensile strengths and hardness. This translates into increased life, wear resistance, durability and economic value.