The Characteristics and Advantages of Stamping

Stamping is also known as sheet metal stamping, which is a kind of plastic processing technology, and the processing object is mainly sheet metal. Its working principle is to use a press to press the mold to force the sheet material to undergo physical deformation at a room temperature to obtain a processing technology for workpieces of a certain size and shape. Compared with casting parts and forging parts, stamping parts are ultra-thin (with a minimum strip thickness of 0.06 mm), uniform and light. Stamping can produce metal workpieces with reinforcing ribs and undulations that are difficult to produce by other manufacturing methods to improve the rigidity of the parts. The sample's accuracy can reach the micron level by using precision mold manufacturing, and the stamping parts with consistent specifications and high precision can be continuously produced. Parts made by stamping do not need to be machined and can be directly assembled. Stamping is a highly efficient manufacturing method. Molds are adopted, especially multi-stage molds. Multiple stamping processes such as cutting, forming and bending can be completed on one stamping machine to realize the fully automatic production of parts. Multi-stage molds have high production efficiency, good working conditions and low production costs. Generally, hundreds of parts can be produced per minute. The main features of stamping are as follows: 
(1) Stamping has high efficiency. The punching machine is easy to operate, and mass production is easy to realize. This is because stamping parts rely on stamping dies and stamping equipment (punching machines) to complete the processing. The SPM frequency of ordinary punching machines is dozens of times per minute, and that of the high-speed punching machine can reach 800 to 2500 times per minute, that is, 800 to 2500 stamping parts can be manufactured per minute, which has high efficiency.
(2) In the stamping process, the size and shape accuracy of the stamping part are guaranteed by the mold design, and the product is consistent with the product design by adjustment and other methods. Generally, the surface quality of stamping parts will not be damaged, and the service life of the mold is generally longer. The mold will be maintained once after manufacturing about 50,000 products. Therefore, the quality of stamping parts is stable and the deformation is easy to control.
(3) Stamping can process parts of different sizes and shapes, from small parts, for example, stopwatches to large covering parts like car hoods and doors.
(4) Stamping is not like other mechanical processing, which generates a lot of chips and scraps. Only the finished material belt is required to produce stamping parts. Therefore, it is a material-saving and energy-saving processing method. Because stamping has high efficiency, the cost of stamping parts is low. The different layout of the material belt in the mold design can increase the utilization rate of the material, which can reach more than 80% of the use rate and greatly reduces the stamping waste. At the same time, the blanks of the cold stamping process generally use strips, which are easy to store and transport during production, and are suitable for the production mode of the modern industry 4.0.
 
Because stamping has so many advantages, it has a wide range of applications in various fields of the national economy. For example, stamping processes exist in the aerospace, aviation, military, machinery, agricultural machinery, electronics, information, railway, post and telecommunications, transportation, chemical, medical equipment, household appliances, and light industry sectors. Not only is it used in the entire industry, but everyone has direct contact with stamping products. There are many large, medium and small stamping parts on airplanes, trains, automobiles, and tractors. The car body, frame, rim and other parts are all made by stamping. According to relevant survey statistics, 80% of bicycles, sewing machines, and watches are stamping parts, 90% of TV sets, tape recorders, and cameras are made by stamping; food metal tank shells, steel pots, enamel bowls and stainless steel tableware are all stamping products that adopt molds; even computer hardware doesn't lack stamping parts.
 
The advantages of stamping
(1) Stamping has high efficiency and high utilization rates of raw materials. The greater the product demand is, the higher the SPM becomes.
(2) Stamping parts have complexity, great consistency, high precision, no burrs and crushing on the edges.
(3) The mold's processing precision is high, and the design technology is difficult.

(4) Stamping can manufacture parts with complex shapes that are difficult or impossible to process by other processing techniques, for example, from instrument for small parts and car covering parts and longitudinal beams for large parts.

 
The disadvantages of stamping
The disadvantages of stamping are the long mold manufacturing cycle and high cost, so it is not suitable for single-piece and small-batch production. In addition, mechanical presses are mostly used in stamping. Accidents easily occur for manual operation due to labor intensity, because the slider has fast reciprocating movement. Therefore, special attention must be paid to safety production, safety management, and necessary safety technical measures.
 
Because of the above outstanding advantages of stamping, it is widely used in mass production and occupies a very important position in modern industrial production, which is an indispensable manufacturing method for the high-tech industry and civilian industrial production.