Knowledge of Deep Drawn Metal Stamping&Formed Parts
Deep drawn metal stamping&formed parts are formed by using a die to deform metal sheets or tubes by deep drawing to make them hollow or thin-walled structures of a certain shape and size.
Processing of Deep Drawn Metal Stamping and Formed Parts
The processing of deep drawn metal stamping and formed parts usually includes blanking, punching, blanking, bending and other processes, among which punching and blanking require high precision. This forming method is widely used to manufacture thin-walled parts such as cylindrical, rectangular, stepped, spherical, conical, and parabolic. And it can be combined with other stamping processes to manufacture parts with more complex shapes.
During the deep drawing stamping process, the metal sheet or tube undergoes plastic deformation under the action of the die and the drawing machine to obtain the required shape and size. This forming method has the advantages of high production efficiency, high material utilization rate, and the ability to manufacture parts with complex shapes.
Classification of Deep Drawing Stamping and Forming
The use of stamping equipment to perform deep drawing forming of products mainly includes deep drawing, re-deep drawing, reverse deep drawing, and thinning deep drawing.
Deep Drawing Process
Using a pressing plate device, using the punching force of the punch, a part or all of the flat plate is pulled into the cavity of the concave mold to form it into a container with a bottom. Its stress-strain situation is similar to that of compression flanging. Due to the tangential compressive stress, it is easy to wrinkle, so the forming limit is mainly limited by compression wrinkling.
Re-deep Drawing Process
The flange part of the previous process deep drawing product is subjected to angular re-deep drawing processing. This processing requires the material to have good plasticity. The deep drawing products that exceed the deep drawing processing limit need to be deep drawn more than twice before they can be completed.
Reverse Deep Drawing
The work-piece deep drawing in the previous process is a reversely deep drawing, which is a kind of re-deep drawing. The reverse deep drawing method can increase the radial tensile stress, which can achieve better results in preventing wrinkles, and it is also possible to increase the deep drawing coefficient of re-deep drawing.
Thinning Deep Drawing Process
It mainly changes the thickness of the barrel wall of the deep drawing part during the deep drawing process. The gap between the male and female dies is smaller than the thickness of the blank. And the straight wall part of the blank is under a large uniform compressive stress when passing through the gap. While the wall thickness becomes thinner during the deep drawing process, the deviation of the container wall thickness is eliminated, the smoothness of the container surface is increased, and the precision and strength are improved.
Application of Deep Drawn Metal Stamping&Formed Parts
Stamping and deep drawing forming processes are widely used in various fields, such as automotive, home appliances, and aerospace. It can manufacture metal parts of various shapes, including automotive bodies, home appliance shells, etc. It has the advantages of high efficiency, high precision, and high quality, which can greatly reduce production costs and improve the appearance, quality and precision of products.
Advantages of Deep Drawing Stamping
- High Quality
The shape and size of the stamped parts are very precise and have a long life. So the quality of the deep drawing stamped parts is relatively high.
- Simple and Efficient
Each step in the stamping process is controlled like an assembly line. The operation is simpler than the general stamping method, the production efficiency is high. And it is easy to realize mechanization and automation.
- Energy Saving and Environmental Protection
It has a special manufacturing process. And the materials are reasonably used in the processing, which does not require too much consumption and saves production costs.
- Complicated Shapes can be Processed
Stamping can process parts with a large size range and complex shapes. And the strength and rigidity of the stamped parts are relatively high.
Disadvantages of Deep Drawing Stamping
- Forming Defects
In the actual stamping production process, forming defects such as cracking, wrinkling and spring-back are prone to occur, which will seriously affect the geometric accuracy, mechanical properties and surface quality of the stamped parts.
- High Mold Cost
The molds used in deep drawing stamping are generally special. Sometimes, a complex part requires several sets of molds to be processed and formed. And mold manufacturing has high precision and high technical requirements.
Hejustamping-Experienced Micro Deep Drawn Metal Stamping and formed Parts Manufacturer
Dongguan Heju Precision Electronic Technology Co., Ltd. is a company specializing in the production of precision deep drawn parts. It has 30 years experience for small deep drawn enclosures widly used for e-cigarettes, micromotors, batteries, sensors, pacemakers, etc. It can achieve external R/ T<1.0; there is strict quality control and reporting from materials to production and processing to sales. At the same time, the development center is equipped with advanced computer simulation technology for drawing forming analysis and verification. It can customize production according to customer needs and requirements and provide optimal solutions!