Forging
Key words:
Forgings
Flange
Classification:
Product Introduction
Forging is a processing method that uses forging machinery to apply pressure to metal blanks to produce plastic deformation to obtain forgings with certain mechanical properties, certain shapes and sizes. Forging (forging and stamping) is one of the two major components. Forging can eliminate the defects such as loose casting in the smelting process and optimize the microstructure. At the same time, due to the preservation of the complete metal flow line, the mechanical properties of forgings are generally better than castings of the same material. Related machinery in high load, severe working conditions of important parts, in addition to the shape of a relatively simple available rolling plates, profiles or weldments, the use of forgings.
The beginning of the recrystallization temperature of steel is about 727 ℃, but commonly used 800 ℃ as a dividing line, higher than 800 ℃ is hot forging; between 300~800 ℃ is called warm forging or semi-hot forging, forging at room temperature is called cold forging.
Forgings used in most industries are hot forging, warm forging and cold forging are mainly used for automobile, general machinery and other parts of the forging, warm forging and cold forging can effectively save material.
According to the forming mechanism, forging can be divided into free forging, die forging, grinding ring, special forging.
Forging equipment die movement and freedom is inconsistent, according to the bottom dead center deformation limit characteristics, forging equipment can be divided into the following four forms:
1. Limit the form of forging force: oil pressure directly drives the oil press of the slider.
2. Quasi-stroke limit method: oil pressure drives the hydraulic press of the crank connecting rod mechanism.
3. Stroke limit mode: mechanical press with crank, connecting rod and wedge mechanism driving slider.
4. Energy limitation mode: screw and friction press using screw mechanism.
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