Introduction of common stamping processes

Stamped parts 1

Cold stamping die process is a metal processing method, which is mainly for metal materials, forcing the materials to deform or separate through the press equipment such as punching machine, in order to get the product parts that meet the actual requirements, abbreviated as: stamping parts.

There are many kinds of stamping processes for molds, and many friends say they don’t quite understand them, so here I will give you a summary of the most common stamping processes. As follows.

1、Punching and cutting

It is a general term for a stamping process that separates materials. It includes: drop, punching, punching, slotting, cutting, chiseling, edge cutting, tongue cutting, cutting, etc.

2、Lower profile

This is a stamping process in which excess material is cut off from the periphery of the material to meet dimensional requirements.

3、Tongue cutting

A part of the material to cut an opening, but not all cut, common for rectangular only cut three sides and keep one side untouched, the main role for the fixed step.


This process is not common, but is mostly used for tubular parts where the end or a part needs to be enlarged outward to a flared shape.


The opposite of flaring is a stamping process where the end or a part of a tubular part needs to be reduced inward.


In order to obtain the hollow part of the part, the material is separated in the middle of the complete material by means of a punch and a cutter and the corresponding hole size is obtained.

Stamped parts 3

7、Fine punch

When the quality of the stamping section is required to be a full bright band, it can be called “fine punching” (Note: the common punching section is divided into four parts: collapsed angle band, bright band, fracture band and burr area)

8、All-bright punching

Unlike fine blanking, full brightness punching must be done in one step to obtain a full brightness strip, while fine blanking is not.

9、Deep hole punching

When the diameter of the hole in the product is smaller than the thickness of the material, it can be interpreted as deep hole punching, and the difficulty of punching is shown by the easy breakage of the punch.

10、Bunch of convex bags

The process of creating a projection on a flat material to meet the requirements of use


Many friends understand forming as bending, which is not strict. Because bending is a type of forming, forming refers to the general term of all liquid material processes


A conventional process of plastic deformation of flat materials through convex and concave die inserts to obtain the corresponding angle and shape.

13、Pressing tendon

This is generally used in the sharp corner bending forming inserts, mainly by bending the material at the location of the pit to reduce the material rebound, to ensure that the angle of a stable structure


A process of pressing a special pattern on the surface of the material by means of a punch, commonly: pressed letters, pockmarks, etc.

15、roll round

A kind of molding process, which is a process of curling the shape of the product into a circle.

16、Flip hole

The process of turning out the inner hole of a pressed part to obtain a side edge of a certain height.

Stamped parts 2

17、School leveling

Mainly for products with high flatness requirements, when the flatness of the stamped parts is out of tolerance due to stress, it is necessary to use the leveling process for leveling.


When the angle and shape of the product is not the theoretical size after molding, it is necessary to consider adding a process for fine-tuning to ensure that the angle is stable, and this process is called “shaping”.

19、Drawing depth

The process of getting a hollow part from a flat material by means of a method is called stretching, which is mainly done by means of convex and concave dies.

20、Continuous deep drawing

Usually refers to a stretching process in which the material in the same position is stretched several times in one strip by one or several dies

21、Thinning and deepening

Continuous stretching and deep stretching are all part of the thinning stretching series, meaning that the wall thickness of the stretched part will be less than the thickness of the material itself.

Stamped parts 4

The principle is similar to that of convex ladle, both of which are convex to the material. However, the drawing is usually referred to automotive parts, which belong to more complex molding series, and its drawing structure is relatively more complex

23、Engineering mold

A set of dies in which only one stamping process can be completed in a single press is collectively called

24、Composite mold

A set of dies that can perform two or more different stamping processes in a single press is collectively called

25、Progressive die

A general term for the type of die that feeds two or more processes in sequence by means of a belt, and feeds them in sequence with the stamping process to achieve the final product.

Thank you for watching. If you have any further questions please contact us, thank you! If your stamping is of interest, please contact us to communicate in detail.

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