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Method for ensuring rigidity of ring piece in rolling process of rectangular ring piece

A rectangular ring, rolling process technology, applied in the direction of metal rolling, etc., can solve the problem of not being able to ensure the rigidity of the ring

Active Publication Date: 2021-05-14
CHONGQING UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Large-scale rings are widely used in aerospace, energy, automobile, shipbuilding, chemical and other industrial fields. Due to the large size of large-scale rings, the required rolling force is large, and the rolling of rings needs to meet more extreme stiffness conditions. Existing The rolling process cannot ensure the stiffness of the ring during ring rolling

Method used

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  • Method for ensuring rigidity of ring piece in rolling process of rectangular ring piece
  • Method for ensuring rigidity of ring piece in rolling process of rectangular ring piece
  • Method for ensuring rigidity of ring piece in rolling process of rectangular ring piece

Examples

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Embodiment 1

[0112] This embodiment discloses a method for ensuring the rigidity of a rectangular ring during the rolling process. The rolling equipment adopts a horizontal ring rolling machine, which includes the following steps:

[0113] 1) Determine the radial rolling process parameters of the ring. Among them, the radial rolling process parameters of the ring include the initial outer diameter of the ring blank D 0 , the initial inner diameter of the ring blank d 0 , the initial wall thickness H of the ring blank 0 , core roll radial feed rate v(t), material shear yield strength k, ring and roll friction coefficient μ, material yield stress σ s , the friction factor m between the ring and the roll, the apex angle γ of the tapered roll, the angle θ between the guide roll and the z-axis, and the radius R of the tapered roll corresponding to the contact between the tapered roll and the outer surface of the ring 6 , the linear velocity V of the drive roller rotation.

[0114] 2) Calcul...

Embodiment 2

[0214] This embodiment discloses a method for ensuring the stiffness of a rectangular ring during rolling, which includes the following steps:

[0215] 1) The axial feed rate per revolution of 5m 2219 aluminum alloy ring rolling is determined.

[0216] Ring blank initial outer diameter D 0 =3600mm, initial inner diameter of ring blank d 0 =3140mm, ring blank initial wall thickness H 0 =230mm, ring blank initial height B 0 =500mm, core roll feed speed The shear yield strength of the 2219 aluminum alloy material corresponding to the rolling temperature is k=20.2Mpa, the friction coefficient between the ring and the roll μ=0.3, and the yield stress of the 2219 aluminum alloy material corresponding to the rolling temperature is σ s =35Mpa, the friction factor between the ring and the roller m=0.52, the top angle of the tapered roller γ=17.5°, the angle between the guide roller and the z-axis θ=45°, the radius of the tapered roller corresponding to the contact between the tape...

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Abstract

The invention discloses a method for ensuring the rigidity of a ring piece in the rolling process of a rectangular ring piece. The method comprises the following steps that (1) radial rolling process parameters of the ring piece are determined; (2) the relation between the radial feeding speed of the ring piece and the geometrical shape and size of the ring piece are established; (3) the shape of the free side surface of the ring piece is calculated based on a stream function; (4) a rectangular ring piece rigidity model is established; (5) a radial-axial coordinated feeding strategy in the rolling process of the ring piece is established, and the axial feeding amount delta B<n> of the ring piece in each revolution corresponding to the current rolling revolution of the ring piece is calculated; and (6) the ring piece axial feeding amount delta B<n> of each rotation corresponding to the current rolling rotation number of the ring piece is output, and the ring piece is rolled. According to the method, the rigidity model of the rectangular ring piece is established, the radial and axial coordinated feeding strategy in the ring piece rolling process is established, the axial feeding amount per revolution of the ring piece corresponding to the current revolution number of ring piece rolling is calculated, and the rigidity and precision of the ring piece in the rolling process are guaranteed.

Description

technical field [0001] The invention belongs to the technical field of rolling technology, and in particular relates to a method for ensuring the rigidity of a rectangular ring in the rolling process. Background technique [0002] Large-scale rings are widely used in aerospace, energy, automobile, shipbuilding, chemical and other industrial fields. Due to the large size of large-scale rings, the required rolling force is large, and the rolling of rings needs to meet more extreme stiffness conditions. Existing The advanced rolling process cannot ensure the stiffness of the ring during ring rolling. [0003] Therefore, there is an urgent need in the prior art for a method capable of ensuring the stiffness of the ring during the rolling process of the rectangular ring. Contents of the invention [0004] The technical solution adopted for realizing the object of the present invention is such that a method for ensuring the stiffness of a rectangular ring in the rolling process...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21H1/06
CPCB21H1/06
Inventor 谢丹徐戊矫王雨陈锐
Owner CHONGQING UNIV
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