What is the performance of precision automotive sheet metal parts?

2020-04-14 08:57:06

Metal stamping is a kind of technology that uses punch and die to deform or fracture iron, aluminum, copper and other plates and dissimilar materials to achieve a certain shape and size. Metal stamping is sometimes called sheet forming, but it is slightly different. The so-called plate forming refers to the use of plates, thin-walled tubes, thin profiles, etc. as raw materials.

By applying external force to sheet, strip, tube and profile through punch and die, plastic deformation or separation can be produced, so as to obtain the forming processing method of workpiece with required shape and size. The workpiece obtained is the automobile stamping part.

Metal stamping is a kind of forming and processing method to produce plastic deformation or separation of sheet, strip, pipe and profile by means of press and die, so as to obtain the required shape and size of workpiece (stamping part) for automobile parts. Stamping and forging belong to plastic processing (or pressure processing), collectively known as forging. The billets for stamping are mainly hot-rolled and cold-rolled steel plates and strips.

Stamping die is a kind of special process equipment which processes materials (metal or non-metal) into parts (or semi-finished products) in cold stamping process. It is called cold stamping die (commonly known as cold stamping die). Stamping is a kind of pressure processing method, which uses the die installed on the press to exert pressure on the material at room temperature to make it produce separation or plastic deformation, so as to obtain the required parts.

In the process of precision parts, metal stamping takes up a large part.

Now let's understand the following precision metal stamping process performance:

1. Casting performance: refers to the process performance of metal or alloy suitable for casting, mainly including flow performance, full mold capacity; shrinkage, volume shrinkage during casting solidification; segregation refers to chemical composition heterogeneity.

2. Welding performance: refers to the characteristics that two or more metal materials are welded together through heating or heating and pressure welding, and the interface can meet the use purpose.

3. Cold bending performance: refers to the ability of metal materials to withstand bending without cracking at room temperature. The bending degree is generally expressed by the ratio of bending angle α (outer angle) or bending center diameter D to material thickness a. the larger a or the smaller D / A is, the better the material's cold bending is.

4. Stamping performance: the ability of metal materials to withstand stamping deformation without cracking. Stamping at room temperature is called cold stamping. The test method is cupping test.

5. Forging performance: the ability of metal materials to withstand plastic deformation without fracture in forging.