Archive for November, 2016

The punch presses the blank placed in the die with a punch or punch

Monday, November 14th, 2016

The punch press or punch presses the blank placed in the die so as to generate a plastic flow, thereby obtaining a forging method corresponding to the shape of the die or the die. Extrusion, the blank to produce three-dimensional compressive stress, even if the lower plasticity of the blank, can also be extrusion. Extrusion, especially cold extrusion, high utilization of materials, improve the organization and mechanical properties of materials, simple operation, high productivity, can produce long-rod, deep-hole, thin-walled, special-shaped cross-section, is less Processing technology. Extrusion is mainly used for metal forming, can also be used for plastic, rubber, graphite and clay blanks and other non-metallic forming.

Forging: Forging and forging and stamping are collectively called the use of forging machinery hammer, anvil block, punch or through the die to exert pressure on the blank, so that plastic deformation, to obtain the desired shape and size of the workpiece forming processing method.

In the forging process, the overall blank obvious plastic deformation, a large number of plastic flow; in the stamping process, the blank mainly by changing the location of the various parts of the spatial position of the shape, the internal distance does not appear a large plastic flow. Forging is mainly used for processing metal parts, can also be used to process certain non-metallic, such as engineering plastics, rubber, ceramic billet, brick and composite materials such as forming.

Stamping: Stamping is the use of conventional or special stamping equipment, power, so that the sheet directly in the mold by the deformation force and deformation, in order to obtain a certain shape, size and performance of parts production technology. Sheet metal, mold and equipment are three elements of stamping. Stamping is a cold deformation of metal processing methods. Therefore, it is called cold stamping or sheet metal stamping, referred to as stamping. It is a metal plastic processing (or pressure processing) one of the main methods, but also under the material forming engineering technology.

Same point:

Are in the case of pressure makes the material deformation. Are all plastic processing, or pressure processing.

difference:

Extrusion is generally slow to apply pressure, and processing of materials is relatively small. The stamping and forging is often applied in a short time a strong pressure, forming faster. Stamping is generally cold forging process, and forging more than hot forging.