What is deep draw stamping
Deep stretching is a manufacturing process that uses a mold to stretch the material into its final shape by forcing a metal sheet into the mold. The main benefit is that it can create complex shapes quickly and efficiently. If you need metal parts with many curves or intricate details, this stamping may be an ideal choice because it can accommodate almost any design limitation. Deep-drawn parts are more durable than stamped parts because they suffer slight wear and tear during production.
Advantages of deep drawing and stamping
Deep drawing can produce large quantities of high-quality parts quickly and efficiently. This makes it an attractive option for businesses that need to create many products in a short period.
Easy to use
The deep drawing process is relatively simple, making it ideal for businesses looking to save on labor costs. This type of stamping does not require the same expertise as other methods, so your staff can learn how to operate the machine relatively easily.
Adapt to complex designs
As mentioned earlier, deep stretch stamping can easily create complex parts without design limitations. This makes it a good option for businesses needing unique or custom metal parts without spending extra money on design fees.
The advantage of deep draw stamping is the ability to use various materials. This can be particularly beneficial if you are trying to reduce costs or improve product quality by switching from one metal type to another.
Raw materials suitable for deep drawing and stamping
Low carbon steel
Mild steel sheet is the most used material in producing deep drawing parts. It can process various parts and keep the cost very low. Chiangmai processes millions of parts each year using this material, providing customers with efficient and complex parts at competitive costs.
Low-carbon steel has many excellent processing properties in the deep drawing process.
A variety of different grades, molding performance
Excellent strength-to-weight ratio
Cold-rolled steel has a tremendous cost advantage over other stamping materials, such as stainless steel.
Work hardening provides components with higher strength after tensile stamping
Deep stainless steel drawing differs from most other metal stamping processes and requires a lot of experience and expertise. When parts have high wear, heat, and corrosion resistance requirements, the preferred material is often stainless steel.
Stainless steel has the following excellent properties in deep drawing stamping:
High strength, with a very high strength-to-weight ratio
Natural corrosion resistance
Most of them are not magnetic, and some special-purpose magnetic conductive stainless steels are also in market demand.
Stainless steel materials can be heat treated
Excellent anti-wear performance
Electroplating is not required.
Aluminum is one of the great deep tensile materials for several reasons. Aluminum is widely used in power storage, packaging, battery products, and radiator parts. We have decades of experience in aluminum molding and produce countless aluminum parts every year.
Aluminum has the following advantages in the deep drawing process:
Low weight, about 1/3 of the density of mild steel
Excellent strength-to-weight ratio
Aluminum does not rust easily. It is a good choice for corrosion resistance parts.
A variety of surface characteristics can be produced by anodizing treatment to improve and increase corrosion resistance.
Like other metals, the drawing process for copper presents unique challenges to deep drawing processes. Copper is commonly used in temperature sensing, electronics/electrical, plumbing, thermal and decorative components. Based on decades of drawing experience and a large number of parts manufacturing, Chiangmai is an excellent manufacturer of deep copper drawing.
Copper has the following excellent properties in deep tensile stamping:
Natural corrosion resistance materials
Excellent welding performance
Decorative parts can be polished (surface treatment is required to prevent discoloration)
Brass is the most commonly used copper-zinc alloy; in plumbing, air conditioning, and electrical systems. Have a wide range of applications. Chiangmai is an expert in the deep drawing process of brass. Brass can be used to produce high-precision and difficult parts and has good stability.
Brass has the following excellent properties in deep drawing stamping:
Low friction coefficient, it has good applications in gear valve bearings.
It has natural antibacterial properties and is widely used in medical treatment.
It has a shiny, golden appearance and is widely used in decorative parts.
Excellent vocal characteristics
Titanium is a bright metal with low density, high strength, and high corrosion resistance. Titanium and its alloys are widely used in construction, aviation, industrial and commercial fields. We have rich experience in deep tensile titanium alloy products and can meet customers’ needs.
Titanium exhibits many advantages in deep drawing processes, including:
With the highest strength-to-weight ratio, it has the strength of steel but only 45% mass.
Low electrical and thermal conductivity
Strong natural corrosion resistance
Biocompatibility and anti-allergenicity for medical purposes
There is a high-cost advantage compared to casting and machining.
Deep drawing stamping forming process
Deep drawing stamping is a method of forming a blank slab into open hollow parts using a die. As one of the main stamping processes, drawing is widely used. The stretching process can be made into cylindrical, rectangular, ladder, spherical, conical, parabolic shapes, and irregular shapes of thin wall parts, if with other stamping forming processes, but also can make more complex shape parts.
Use stamping equipment to carry out tensile forming processing of products, including stretching processing, redrawing processing, reverse drawing and thinning drawing processing, etc.
Drawing processing: using the pressing plate device, the punch pressure is used to pull part or all of the flat plate into the concave model cavity so that it is formed into a container with a bottom. The processing of the side wall of the container and the drawing direction parallel is a simple drawing processing, and the drawing processing of the conical (or angular cone) shaped container, hemispherical container, and parabolic surface container, which also includes the expansion processing.
Redrawing processing: For the deep drawing products that cannot be completed by drawing processing, it is necessary to draw the forming products again to increase the depth of the container.
Reverse drawing processing:
Reverse drawing of the workpiece before the process
The inside of the workpiece into the outside
Making its diameter smaller processing
Thinning stretch processing: the punch will have formed the container squeezed into the concave model cavity slightly smaller than the outer diameter of the container so that the outer diameter of the container with the bottom becomes smaller, and the wall thickness becomes thinner, eliminate not only the wall thickness deviation, but also make the surface of the container smooth.