According to the shape of components or products, metal stamping involves a variety of different processes, each of which is different. These processes are used to realize the complex and detailed design of parts and products. These industries include aerospace, consumer products, automotive, aviation, electronics, food and beverage, etc. It is usually not possible to use a metal stamping method to make a part, because each process involves making a specific design. Many stamping technologies involve extrusion, stretching, rib pressing and other processes. Each technology involves a mix of processes to achieve the required components. All these methods are carried out at room temperature and usually involve minimal or zero heat. Metal stamping is a typical cold forming manufacturing process, which involves the use of a number of tools and equipment, such as stamping machines (punches), molds, etc., to form complex shapes and appearances. In view of this, we will discuss some of the most popular metal stamping processes used by manufacturers.

1. Punching method

Punching is a common metal stamping process. A metal plate is fixed in one place, or more accurately, on a work surface. Using different tools and machines, a hole is formed on the metal plate, and a series of different hollow areas are formed on the metal plate. Punching is a little different, because after punching on the metal plate, the perforated part is removed and no longer used. In order to ensure that the metal plate is not deformed, punching must be a continuous process. The area around the punching must be precisely designed. The machine used in the metal stamping process is made of high carbon steel and must be thoroughly maintained so that there is no passivation or passivation, which may deform the shape of the metal plate.

2. Blanking method

There is not much difference between blanking and punching - however, a big difference is that perforated sheets are not thrown away. The punched plate is the final component. Many metal stamping companies usually cut before doing other things on the project. After blanking, the manufacturer shall carry out other metal stamping stages, such as extrusion and bending. Blanking essentially involves the manufacture of plates - usually on small or medium-sized metal plates cut from large pieces. This is a particularly advantageous process when mass manufacturing is involved because it is easy and leads to high quality and precision based cutting. However, in some cases, the metal plate may contain unwanted edges or burrs. This is a common problem; However, sharp edges and burrs will eventually be removed by several processes such as thermal deburring, manual deburring and / or vibration.

3. Stretching method

When it comes to metal stamping, some manufacturers also use the so-called drawing process. The method basically involves firmly fixing both ends (opposite ends) of the metal plate. The next step is to place the metal plate on a mold with a cross-sectional shape. Through a powerful stamping process, the die produces a punch to push the plate onto the machine. This is helpful to develop the cross-sectional shape of the machine and fully deform the metal plate to meet the requirements. The stretching method can also be divided into two other processes, called deep stretching and shallow stretching. These are similar processes that achieve the required depth on a metal plate. For example, during a shallow stretch, the radius of the primary sheet metal will always correspond to the depth of the stretch, which means that it will be equal. On the other hand, deep drawing is basically a cup-shaped cutting on the metal plate to form different products. In the deep drawing process, the total radius of the metal plate is much smaller than the depth to be carried out.

4. Extrusion method

Extrusion method in metal stamping is a typical process used by manufacturers to manufacture extruded products and components. The extrusion method relates to a "closed die" manufacturing technology. In this case, the metal plate is used as a whole or extruded into parts. This process involves two independent molds, whose positions gradually converge at both ends of the metal plate to form a coin shape. One of the greatest advantages of the extrusion method is that it is very effective in manufacturing various metal parts and products with different quantity tolerances. It is also a relatively direct technology, which can quickly and reliably produce deformation (usually permanent) on products. This is essentially to make the components or products highly resistant to deep physical wear and strong impact.

5. Tongue cutting method

Tongue cutting technology is completely different from blanking and punching methods. How to put it? Well, tongue cutting involves a unique metal stamping process that does not require the removal of any metal parts from the plate. The punch and die processes are set to make a deep seam in the metal surface. The purpose of this is to avoid the generation of any metal scrap - for example, metal plugs that need to be disposed of or removed during the post-treatment phase. One of the main reasons why manufacturers use the tongue cutting method is that the process helps to create a variety of unique and customized designs and shapes using different types of metals. For example, it is often used to create assemblies and parts that need to be used for applications such as openings, vents, labels, and so on.

6. Reinforcement pressing method

Sheet metal lacing is another unique technique used to design raised surfaces in specific areas of the sheet metal. Pressing ribs can be created in two different ways -- through a mold group or a machine. The rib pressing method is mainly used to create parts and assemblies for various applications, depending on the complexity and form of the design required. For example, some of the best examples of using stiffened components include metal covers, hoods, engine housings, door frames, checkerboard steel plates, and so on. The rib pressing technique can be used on different metal surfaces, however, the most popular metal type in this process is aluminum. This is mainly because this metal is very easy to process. In addition, this material is durable and light, and these two great features help to make the pressing process more efficient and effective.