The general development trend of precision plastic processing is from the development of refined blanks to direct processing of parts. For the needs of cars and aerospace, the development trend of forgings is: 1 with light weight, thin and thick, with no cutting precision. 2 Improve process reliability and manufacturing flexibility of equipment. 3 Reduce the running tour of the equipment.
Cold extrusion
With the progress of precision plastic technology. Closed (occlusion) cold precision forging is especially suitable for some precision flash forging without flash, which has become one of the development directions of precision die forging. Warm forging includes warm squeezing, which heats the metal blank to a suitable temperature range at its crystallization temperature for swaging or extrusion. The advantages are that the oxidation and decarburization are greatly reduced, the deformation resistance is greatly reduced, the tonnage of the required equipment is greatly reduced, the forgings are precise in size, and the internal and external quality is close to the precision forging and cold extrusion.
Applicable to the gear precision forging press: 1 toggle-type mechanical press. It adopts advanced multi- toggle lever transmission mechanism, which has smooth bottom end movement and wide low speed range. The nominal force stroke reaches 25mm (the general mechanical press is only 5~10mm). It is mainly used for cold precision forging car differential planetary gears, axle gears and other parts. 2 precision hydraulic press. The precision forging hydraulic press is characterized by simple structure, low cost, strong process adaptability and high productivity.
Cold precision forged inner planetary gear
The fully hydraulic closed forging hydraulic press currently produced is mainly used for closed cold forging or closed half warm forging of bevel gears. The double-headed involute gear shaft produced by our company is perfect for forming because it is a long shaft and can only be produced on a precision forging hydraulic press.
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