Continuous technical transformation Adopting the combination of warm forging and cold forging

2017-01-16 10:20:53  浙江三维大通精锻科技有限公司   Read 140

Based on the original cold extrusion process, our company adopts the warm forging process and the "warm forging + cold forging" comprehensive process to produce mechanical parts, which can give full play to the advantages of cold and warm forging precision forming, reduce costs and improve quality. .


Warm forging is a new plastic forming process developed rapidly on the basis of cold plastic forming in recent years. Its deformation temperature is generally considered to be in a temperature range above room temperature and below the complete recrystallization temperature. The parts formed by this process have good quality and high precision, and can form parts with complex shapes.


Compared with hot die forging, the surface of warm forged parts does not undergo strong oxidation. The surface quality is good, the dimensional tolerance is small, and even the working surface of the part can be directly formed. The subsequent machining is completely omitted, and there is no flashing, which saves raw materials. . Although cold forging can obtain higher surface quality and dimensional accuracy, cold forging has strict requirements on the shape of deformed materials and parts. For commonly used alloy structural steels, cold forging can be used only when its carbon content is less than 0.45%, and it is limited to parts with simple shapes. In multi-step cold forging, heat treatment steps are usually added between each step to eliminate cold work hardening. In addition, the alloy structural steel has a large deformation resistance during cold forming, which requires high press tonnage and mold materials. It is bound to reduce production efficiency and increase production costs. The temperature range of warm forging is between cold forging and hot forging. For common alloy structural steels, the yield stress during warm forging is about 1/3 of that during cold forging. The deformation ability of the material is comparable to that at room temperature. Increase 2 to 3 times. This can reduce the forming steps and save equipment investment. The dimensional accuracy and surface quality of the formed parts are equivalent to cold forging. If a cold forming step is added at the end, the same cold forging can be obtained. Dimensional accuracy and surface quality. Therefore, warm forging not only breaks through the limitations of deformed materials and part shapes in cold forging, needs to increase the intermediate heat treatment process and deformation resistance, but also overcomes the surface quality and dimensional accuracy problems caused by strong oxidation in hot forging. Has significant advantages.




1. The difference between cold extrusion and hot extrusion

2. The difference between hot forged parts and cold extruded parts

3. The difference between hot forging drawing and cold extrusion drawing The difference between hot forging drawing and cold extrusion drawing


1. The difference between cold extrusion and hot extrusion

2. The difference between hot forged parts and cold extruded parts

3. The difference between hot forging drawing and cold extrusion drawing The difference between hot forging drawing and cold extrusion drawing


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Zhejiang 3D Datong cold extrusion Co., Ltd.

86-573-86722166
86-13906835667 Mr.Liu
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