A free forging method for door-shaped forgings

A door-shaped and forging technology, which is applied in the forging field and can solve problems such as forging costs

Active Publication Date: 2017-10-31
SHAANXI HONGYUAN AVIATION FORGING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is: the door-shaped forging adopts the free forging method to solve the streamline problem and the forging cost problem in the forging process

Method used

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Embodiment Construction

[0010] The present invention is described in further detail below by specific embodiment:

[0011] A certain type of door-shaped forging made of 30Ni4CrMoA material must be processed by free forging; the coaxiality of the required door-shaped forging must ensure the streamline requirements, and the size of the forging is: the upper frame of the door-shaped forging is The height is 110mm, the upper and lower bottoms are 120mm and 310mm respectively, and the thickness of the plane trapezoid is 130mm; the two sides of the door forging are cuboids with a height of 320mm×45mm×100mm, and the top of the inner frame is transitioned with an arc of R100mm.

[0012] Select the 30Ni4CrMoA bar material with a diameter of 150mm and a length of 405mm according to the above-mentioned requirements; adopt the forging method of the present invention: at first prefabricate the door-type two-leg bench tooling by 5CrNiMo die steel. The whole of the door-shaped bench is in the shape of a mouth witho...

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Abstract

The invention belongs to the technical field of forging, and relates to a free forging method of a door-shaped forging. The invention prefabricates an integral door-shaped bench with two legs, and then heats and chamfers the bar material, and then pulls out the unchamfered cuboid. Then use the punch to punch the center, and then use the punch to expand the hole, and then use a special door-shaped two-legged bench for the hexagon with holes after the expansion, and then pull out the two sides of the longest hexagon respectively. To the required size of the forging; after that, it is corrected to the appropriate thickness requirement, so as to complete the forging of the door-shaped forging. By adopting effective tooling and free forging methods, the problem of streamline and high cost of forgings in the forging process of door-shaped forgings is solved. Thus, the streamline requirement of the door-shaped forging is ensured and the forging cost is reduced.

Description

technical field [0001] The invention relates to the technical field of forging, in particular to a free forging method for a gate-shaped forging. Background technique [0002] Usually, the door-shaped forgings are prefabricated by two upper and lower molds after the bar is heated. The lower mold cavity of the mold is the outer shape of the head of the forging, and the lower mold cavity of the mold is the inner shape of the head of the forging. The bar is free forged and upset to form a cake, and then formed by the above mold, and then the two leg cadres of the door-shaped forging are pulled out after free forging, and then the special mold is designed for die forging to form a finished forging; but Because in the above method, the two arms and the head of the door-shaped forging are pre-forged separately, and no measures are taken to ensure the streamline of the entire forging during the forging process, the cost of the forging is high, the process is many, the number of hea...

Claims

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Application Information

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Patent Type & AuthorityPatents(China)
IPC IPC(8): B21J5/00
Inventor姚彦军郝宏斌李明秦卫东冀胜利
OwnerSHAANXI HONGYUAN AVIATION FORGING