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Continued use of warm forging technology, the combination of cold forging process 
I have used in the original cold extrusion process, based on the use of warm forging process and the "Warm Forging + cold forging" a comprehensive process to produce mechanical parts, you can give full play to the cold, warm forging precision forming of the advantages of lower costs, improve quality .
Warm Forging in recent years in the cold plastic forming the basis of the rapid development of plastic forming a kind of new technology. It is generally believed that the deformation temperature is above room temperature, completely re-crystallization temperature below the temperature range. Forming part of the process of good quality and high precision, but also the complexity of forming the shape of the parts.
And compared to hot forging, warm forging strong surface oxidation does not occur, the surface quality, dimensional tolerances small, and even direct the work of forming the surface of parts, machined completely eliminate the follow-up, and no flash, save raw materials . While cold forging forming surface can be higher quality and dimensional accuracy, but the cold forging forming of the shape deformation material and parts are more demanding . Commonly used alloys for structural steel, and only in their carbon content of l ess than 0.45% can be formed using cold forging and forming the shape is limited to simple parts. In the multi-step forming of cold forging, usually between the step to join the heat treatment step to eliminate the cold-hardening, in addition to alloy structural steel in the deformation resistance when cold forming, and tonnage of the press and the mold material requirements, such is bound to lower production efficiency, increase production costs. Warm Forging temperature range between the cold forging and hot forging, the alloy used for structural steel, when its warm forging cold forging of the yield stress at the time of about 1 / 3, the deformation of material and at room temperature compared to 2 ~ 3 times, thus reducing the forming step, saving equipment; and the parts forming the dimensional accuracy and surface quality and cold forging forming a considerable, if added at the end of a cold strip of plastic, they can get the same cold forging forming dimensional accuracy and surface quality. Warm Forging therefore not only a breakthrough in the cold forging deformation forming materials, the shape of parts, an additional intermediate step of heat treatment and deformation resistance of the limitations, but also to overcome the result of forging strong oxidation caused by the surface quality and dimensional accuracy problems, has significant advantages. |
