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What is the difference between casting and stamping?

  • Author:Henry
  • Source:Www.xy-global.com
  • Release on:2018-09-13
  Stamping is mainly classified according to the process and can be divided into two major categories: separation process and forming process. The separation process is also called punching, and its purpose is to separate the stampings from the sheet along a certain contour line, while ensuring the quality requirements of the separated sections. Stamping is an efficient production method. It adopts composite molds, especially multi-station progressive molds. It can complete multiple stamping processes on one press, and realize the whole process of unwinding, leveling and punching to forming and finishing. Automatic production. High production efficiency, good working conditions, low production costs, and generally can produce hundreds of pieces per minute. The purpose of the forming process is to plastically deform the sheet without breaking the blank to produce a workpiece of the desired shape and size. In actual production, it is often the case that multiple processes are integrated into one workpiece. Blanking, bending, shearing, drawing, bulging, spinning, and correction are several major stamping jobs.
    The casting is a metal molded object obtained by various casting methods, that is, the smelted liquid metal is poured into a pre-prepared mold by pouring, injecting, inhaling or other casting method, and after cooling, after falling sand, cleaning and then Processing, etc., the resulting article with a certain shape, size and performance.
    The difference between metal stamping parts and castings: thin, uniform, light and strong. Stamping can produce workpieces with ribs, ribs, undulations or flanging that are difficult to manufacture by other methods to increase their rigidity. Due to the use of precision molds, the precision of the workpiece can reach the micron level, and the difference between the heavy stamping parts and the casting parts: thin, uniform, light and strong. Stamping can produce other methods that are difficult to manufacture with ribs, ribs, undulations or turns. Edge the workpiece to increase its rigidity. Thanks to the use of precision molds, the precision of the workpiece can reach micron level, and the repeatability is high and the specifications are the same, and the holes, bosses and the like can be punched out.
    Hardness testing of stamping parts The hardness of metal stamping parts is measured by Rockwell hardness tester. Small, complex-shaped stampings can be used to test small planes that cannot be tested on ordinary benchtop Rockwell hardness testers.
    Hardness testing of castings The properties of castings directly affect the quality of the processing. The hardness value is an important indicator for casting processing. 
  1. Brinell hardness: mainly used to determine the hardness of castings, forgings, non-ferrous metal parts, hot-rolled billets and annealed parts, the measurement range is ≯HB450.
    2. Rockwell hardness: HRA is mainly used for high hardness test pieces, and the hardness and surface hardness of HRC67 or higher, such as cemented carbide and nitrided steel, are measured. The measurement range is HRA>70. HRC is mainly used for the hardness measurement of steel parts (such as carbon steel, tool steel, alloy steel, etc.) after quenching or tempering, and the measurement range is HRC20~67.
    3. Vickers hardness: used to determine the hardness of thin and steel parts, can also be used to determine the hardness of surface hardened parts such as carburizing, cyanidation and nitriding.
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