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A method for manufacturing a multi-step large-diameter casing ring forging

A manufacturing method and large-diameter technology, applied in metal rolling, metal processing equipment, etc., can solve the problems of high processing costs, high prices, and large consumption of materials

Active Publication Date: 2020-09-15
GUIZHOU AVIATION TECHN DEV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Nickel-based high-temperature alloy materials are expensive. Forgings with regular shapes designed according to conventional methods consume more materials and higher processing costs.

Method used

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  • A method for manufacturing a multi-step large-diameter casing ring forging
  • A method for manufacturing a multi-step large-diameter casing ring forging
  • A method for manufacturing a multi-step large-diameter casing ring forging

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] (1) Select the WASPALOY rod-shaped raw material, carry out blanking, and then upset the raw material to make the length and thickness appropriate;

[0030] (2) Punch the raw material after upsetting, so that the center is opened;

[0031] (3) Horse-frame reaming is carried out on the raw material after punching, so that the size of the hole is suitable, the volume of the raw material is reasonably distributed, and a rectangular cross-section ring blank is obtained;

[0032] (4) Use a mold with a trapezoidal cross-section to punch in from the lower part of the ring blank, so that the side wall of the ring blank is inclined outward and becomes a bell shape;

[0033] (5) The ring blank is processed by using the method of tire mold blank making, and molds are set on the inside and outside of the ring blank, and then rolled, so that the shape of the ring blank is close to the shape of the final forging, so that the subsequent rolling is carried out smoothly;

[0034] (6) Us...

Embodiment 2

[0036] (1) Select GH738 rod-shaped raw material, carry out blanking, and then upset the raw material to make the length and thickness appropriate;

[0037] (2) Punch the raw material after upsetting, so that the center is opened;

[0038] (3) Horse-frame reaming is carried out on the raw material after punching, so that the size of the hole is suitable, the volume of the raw material is reasonably distributed, and a rectangular cross-section ring blank is obtained;

[0039] (4) Use a mold with a trapezoidal cross-section to punch in from the lower part of the ring blank, so that the side wall of the ring blank is inclined outward and becomes a bell shape;

[0040] (5) The ring blank is processed by using the method of tire mold blank making, and molds are set on the inside and outside of the ring blank, and then rolled, so that the shape of the ring blank is close to the shape of the final forging, so that the subsequent rolling is carried out smoothly;

[0041] (6) Use as at...

Embodiment 3

[0043] (1) Select the WASPALOY rod-shaped raw material, carry out blanking, and then upset the raw material to make the length and thickness appropriate;

[0044] (2) Punch the raw material after upsetting, so that the center is opened;

[0045] (3) Horse-frame reaming is carried out on the raw material after punching, so that the size of the hole is suitable, the volume of the raw material is reasonably distributed, and a rectangular cross-section ring blank is obtained;

[0046] (4) Use a mold with a trapezoidal cross-section to punch in from the lower part of the ring blank, so that the side wall of the ring blank is inclined outward and becomes a bell shape;

[0047] (5) The ring blank is processed by using the method of tire mold blank making, and molds are set on the inside and outside of the ring blank, and then rolled, so that the shape of the ring blank is close to the shape of the final forging, so that the subsequent rolling is carried out smoothly;

[0048] (6) Us...

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Abstract

The invention relates to the technical field of special-shaped forged piece manufacturing technologies, in particular to a multi-step large-diameter casing ring forged piece and a manufacturing methodthereof. According to the multi-step large-diameter casing ring forged piece and the manufacturing method thereof, the casing ring forged piece is manufactured through processes of discharging, upsetting, punching, mandrel supporter reaming, inclining through breaking-off, forming die blanking, pre-rolling and rolling forming; the size distribution characteristic of a blank in the height direction meets the final forming requirements through upsetting, punching, mandrel supporter reaming, and forming die blanking; the large end of the blank is made to face downwards through a special structure, and rolling of the blank is ensured to be stable by loading from the position above a core roller die; the blank makes tight contact with the die by adjusting the size of the ring billet, and axialmoving of the blank is prevented; grains are refined by using high-temperature large deformation at the earlier stage, and the grains are kept to be unchanged by adopting low-temperature small deformation in the follow-up special-shaped blanking and forming process, so that the grains are fully refined; and finally, according to the manufacturing method of the multi-step large-diameter casing ring forged piece, rolling is stable, and the rolling precision of the forged piece can be well ensured.

Description

technical field [0001] The invention relates to the technical field of manufacturing technology for special-shaped forgings, in particular to a method for manufacturing multi-step large-diameter casing ring forgings. Background technique [0002] At present, because forgings designed with a more regular profile need to consume more material, it is often considered to set the forgings into a multi-step shape. [0003] Forgings with multi-step and large-diameter casings have complex internal and external profiles, and the size difference between the two ends of the forgings is large. Traditional rolling mills use a pull-up core roll design. The end must be upward to ensure that the core roll mold can be inserted into the inner hole of the billet from above. The rolling method with the big end of the billet upward is not conducive to the stable rolling of the billet and the force of the holding wheel, which may easily cause rolling failure. [0004] The shape and surface of th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B21H1/06B21J5/08B21J5/10B21J5/00
CPCB21H1/06B21J5/002B21J5/08B21J5/10
Inventor 崔海国张华吴永安谢撰业王华东杨家典邹朝江张园园
Owner GUIZHOU AVIATION TECHN DEV
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