Roll forming method of Inco718 alloy special-shaped thin-wall ring piece

A thin-walled ring and special-shaped technology, applied in metal rolling, metal processing equipment, etc., can solve the problems of thin-walled rings, increased manufacturing costs, unqualified forgings, etc., to meet the requirements of reducing force, eliminate rapid temperature drop, avoid The effect of bad influence

Pending Publication Date: 2022-04-12
GUIZHOU ANDA AVIATION FORGING
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Although the first method can obtain ideal thin-walled rings by rolling, it requires multiple sets of molds, and the forming process is complicated. For some small special-shaped thin-walled rings, it will increase the manufacturing cost virtually.
In the case of forming by the second method, due to the thin thickness of the thin-walled ring, the temperature drop is too fast during the forming process, and the ring blank is easy to exceed the final forging temperature, resulting in unqualified forging structure

Method used

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  • Roll forming method of Inco718 alloy special-shaped thin-wall ring piece
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  • Roll forming method of Inco718 alloy special-shaped thin-wall ring piece

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Embodiment Construction

[0019] To implement the rolling forming method of the Inco718 alloy special-shaped thin-walled ring according to the present invention, equipment such as forging presses, ring rolling mills, and high-temperature electric furnaces must be provided. The specific implementation of the method will be described in detail below by taking the tapered thin-walled ring whose material grade is Inco718 alloy as an example.

[0020] The process steps of the preparation method of the large-scale tapered thin-walled alloy are as follows:

[0021] Step 1: Cut the material. According to certain specifications, the raw material is Inco718 alloy, and its main chemical element content (weight percentage) is: C content≤0.08%, Mn content≤0.35%, Si content≤0.35%, P content≤0.015%, S content≤0.015%, Cr content 17.0%~21.0%, Ni content 50.0%~55.0%, Mo content 2.80%~3.30%, Nb content 4.75%~5.50%, Ti content 0.65%~1.15% %, Al content 0.20% ~ 0.80%, Co content ≤ 1.0%, B content ≤ 0.006%, Cu content ≤ 0...

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Abstract

The invention discloses a rolling forming method of an Inco718 alloy special-shaped thin-wall ring piece, which is characterized in that an open type loose tooling forging forming method is adopted to realize forging forming of a nickel-based high-temperature alloy conical thin-wall ring piece, and the method comprises the following steps of: firstly, upsetting, punching and rolling a nickel-based high-temperature alloy bar into a rectangular-section ring blank; and then the conical thin-wall ring piece is manufactured through moulding bed forging. According to the method, the temperature drop rate in the nickel alloy thin-wall ring forming process can be effectively reduced, only the male die is needed, the die investment is reduced, and the manufacturing cost is reduced. The method is suitable for production of the nickel-based high-temperature alloy conical thin-wall ring piece.

Description

technical field [0001] The invention relates to a forging forming method of a ring, in particular to a rolling forming method of an Inco718 alloy special-shaped thin-walled ring. Background technique [0002] The Chinese invention patent specification CN103691853A (application number: CN201310686736.4) published on April 2, 2014 discloses a method for rolling a nickel-based superalloy rectangular ring billet into a special-shaped thin-walled ring. The method adopted in this patent is: heating the nickel-based high-temperature alloy bar material blanked according to the safety specification to the specified forging temperature, and then pre-rolling it into a rectangular ring billet after upsetting and punching. Then reheat the ring billet to the forging temperature, put it into the ring rolling machine, adjust to the specific main roll and cone roll speed, and gradually increase the feed speed of the core roll with a specific rolling force, so that the rectangular ring billet...

Claims

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Application Information

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IPC IPC(8): B21H1/06B21J5/08B21J5/10
Inventor 强超
Owner GUIZHOU ANDA AVIATION FORGING
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