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What are the characteristics of forgings compared with castings?
After forging, the metal can improve its microstructure and mechanical properties. After the casting structure is deformed and recrystallized by the metal after forging by hot working deformation, the original coarse dendrite and columnar grains become equiaxed recrystallized grains with fine grain and uniform size, so that the original segregation in the steel ingot, Loosening, porosity, slag inclusions and other compaction and welding, the organization becomes more compact, improving the metal's plasticity and mechanical properties.
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In general, the mechanical properties of the castings are lower than those of the same material. In addition, the forging process can ensure the continuity of the metal fiber structure, make the fibrous structure of the forging consistent with the shape of the forgings, complete the metal flow line, ensure the parts have good mechanical properties and long service life, use precision die forging, cold extrusion The forgings produced by such processes as warm extrusion and extrusion are unmatched by castings.