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The features of Metal stamping - Features

- Aug 13, 2018 -

Compared with castings and forgings, stamping parts are 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. 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. Cold stampings are generally no longer machined or require only a small amount of machining. The precision and surface condition of hot stampings are lower than that of cold stampings, but they are still superior to castings and forgings, and the amount of cutting is small.


Stamping is an efficient production method. It adopts composite molds, especially multi-station progressive molds. It can complete multiple stamping processes on one press (single or multi-station) to realize unwinding and rectification of strips. Flat and punched into fully automatic production of forming and finishing. High production efficiency, good working conditions, low production costs, and generally can produce hundreds of pieces per minute. Compared to other methods of machining and plastic working, stamping has many unique advantages both technically and economically. The main performance is as follows.


(1) The stamping process has high production efficiency and is easy to operate, and is easy to mechanize and automate. This is because the stamping relies on die and stamping equipment to complete the processing. The number of strokes of ordinary presses can reach dozens of times per minute, and the high-speed pressure can reach hundreds or even thousands of times per minute, and each press stroke is May get a punch.


(2) Since the die ensures the size and shape accuracy of the stamping part during stamping, and generally does not damage the surface quality of the stamping part, and the life of the die is generally long, the quality of the stamping is stable, the interchangeability is good, and it has “the same”. Characteristics.


(3) Stamping can process parts with large size and complex shapes, such as stopwatches as small as watches, as large as car longitudinal beams, covering parts, etc., plus cold deformation hardening effect of materials during stamping, strength of stamping and The stiffness is high.


(4) Stamping generally has no chip scraps, less material consumption, and no need for other heating equipment. Therefore, it is a material-saving and energy-saving processing method, and the cost of stamping parts is low.


Due to the superiority of stamping, stamping processing is widely used in various fields of the national economy. For example, in the aerospace, aviation, military, machinery, agricultural machinery, electronics, information, railway, post and telecommunications, transportation, chemical, medical equipment, household appliances and light industry departments have stamping processing. Not only is it used by the entire industry, but everyone is directly linked to stamping products. There are many large, medium and small stamping parts on airplanes, trains, cars and tractors. The body, frame and rim of the car are stamped and processed. According to relevant survey statistics, 80% of bicycles, sewing machines and watches are stamped parts; 90% of TV sets, tape recorders and cameras are stamped parts; there are food metal cans, steel-fired boilers, enamel bowls and stainless steel tableware. They are all stamping products that use molds; even the hardware of the computer is not missing.


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