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Upsetting method of cylindrical ingot blank or bar with large height to diameter ratio

A cylindrical and ingot technology, which is applied to the open forging field of cylindrical ingots or bars, can solve the problem of uneven structure, reduce the height-diameter ratio, and improve the uniformity of the structure.

Inactive Publication Date: 2017-05-03
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 cylindrical ingot or bar with the ratio of height to diameter between 2.5 and 4.2 is caused by bending, twisting and other forming defects and uneven deformation during billet opening or bar upsetting. Inhomogeneous metallurgical defects

Method used

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  • Upsetting method of cylindrical ingot blank or bar with large height to diameter ratio
  • Upsetting method of cylindrical ingot blank or bar with large height to diameter ratio

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Embodiment Construction

[0018] Below in conjunction with specific embodiment the present invention is further described in detail

[0019] The turbine disk for a certain type of engine is made of FGH96 powder superalloy. Currently, due to the difficulty in smelting this material, only ingots or bars with a diameter of 175mm can be smelted. Therefore, the diameter of the ingot or bar for forging the turbine disk is 175mm. , the height is 750mm, and the ratio of height to diameter is 4.2. The billet or bar billet opening process needs to upset the billet or bar from 750mm to 430mm, and the total upsetting amount is 320mm. The basic situation of the tire membrane used in the billet opening process is that the tire mold is hollow cylindrical, with an outer diameter of 450mm and a height of 530mm. A small amount of slope is set in the inner hole of the tire mold, of which the diameter of the large end is 231mm and the diameter of the small end is 221mm. , to ensure that the blank can be smoothly taken out...

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Abstract

The invention discloses an upsetting method of a cylindrical ingot blank or bar with the height to diameter ratio being between 2.5 and 4.2, and relates to the field of cogging of cylindrical ingot blanks or bars and upsetting forging of bars. On the basis of cogging an ingot blank or a bar in a conventional upsetting method, a moulding bed is arranged on the outer side of the ingot blank or the bar, and a defect that the cylindrical ingot blank or bar with the height to diameter ratio being between 2.5 and 4.2 is bent in the cogging and upsetting process is overcome; dedicated guide rings are manufactured, and the condition that the ingot blank or the bar can be positioned in the center of the moulding bed when being placed in the moulding bed and keeps perpendicular to the horizontal plane is ensured; and a dedicated punch is manufactured to ensure smooth completion of the ingot blank or bar cogging operation. The upsetting method has the advantages of being low in tool manufacturing cost and small in processing volume, and provides a new selection method for cogging of small-batch blanks with large height to diameter ratio and upsetting of bars.

Description

technical field [0001] The invention relates to the technical field of blanking of cylindrical ingots or rods, in particular to a method for forging cylindrical ingots or rods with a ratio of height to diameter between 2.5 and 4.2. Background technique [0002] With the development of aerospace, all kinds of aircraft are gradually becoming integrated and large-scale, which brings about the increase of the weight of forgings used and the increase of blanking size. Due to the limitation of metal material smelting level at present, the outer diameter of the cylindrical ingot or bar with good structure uniformity that can be prepared is limited. Therefore, the height and diameter of the ingot or bar used in the forging process of forgings are relatively large, and the ratio of height to diameter is in the range of For cylindrical ingots or bars between 2.5 and 4.2, if the conventional upsetting method is used, it will easily bend during the upsetting process, and because the bar...

Claims

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Application Information

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IPC IPC(8): B21J5/08
CPCB21J5/08
Inventor 冀胜利陈飞付锐惠斌蔡松何健
Owner SHAANXI HONGYUAN AVIATION FORGING
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