Types and process requirements of hardware stretching process

Metal stretching process refers to the application of pressure on metal material to create a certain degree of plastic deformation along the surface of a die, thereby changing its geometric shape, size, and properties. According to different requirements and usage conditions, metal stretching processes can be classified into the following types:

Ordinary stretching: the material undergoes plastic deformation during unidirectional stretching, commonly used to manufacture simple shapes.

Multidirectional stretching: the material is stretched in two or more directions simultaneously, commonly used to produce complex shapes such as car bodies.

Deep drawing: the material is stretched into relatively deep shapes, requiring consideration of factors such as material properties and die structure.

Others: including bending, twisting, rolling, and other stretching methods.

The requirements for metal stretching processes are as follows:

Choose suitable materials to ensure their plastic deformation ability and corrosion resistance.

Design the die rationally to ensure the flowability and uniformity of the material during stretching.

Control the stretching speed and temperature to avoid cracks and other defects.

Test and control the quality of stretching to ensure that the product meets design requirements and standards.