Rolling method for rectangular isotropous stainless steel ring piece

A rectangular ring, isotropic technology, applied in the direction of metal rolling, etc., can solve the problems such as the large difference between the radial mechanical properties and the axial mechanical properties, and the inability to guarantee the mechanical properties of the ring and achieve consistency.

Inactive Publication Date: 2016-03-23
GUIZHOU ANDA AVIATION FORGING
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  • Abstract
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Problems solved by technology

The production of rectangular rings is mostly carried out by radial rolling. The rings and blanks are designed at the same height. The tapered rollers only play the role of preventing the rings from climbing and limiting the height increase of the rings. The axial deformation is small. As a result, the radial mechanical properties of the ring are quite different from the axial mechanical properties
With the development and progress of ring rolling technology, people have gradually mastered the radial / axial bidirectional rolling forming method. The axial mechanical properties of rectangular rings produced by this method have been greatly improved. However, it is still not possible. Ensure that the mechanical properties of the ring are consistent in all directions

Method used

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  • Rolling method for rectangular isotropous stainless steel ring piece

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[0043] The main chemical element content (percentage by weight) of the alloy is: 0.10% to 0.16% of C, 10.50% to 12.00% of Cr, 1.40% to 1.80% of Ni, 1.50% to 2.00% of W, The Mo content is 0.35%-0.50%, the V content is 0.18%-0.30%, the Mn content is ≤0.60%, the Si content is ≤0.60%, the S content is ≤0.025%, the P content is ≤0.030%, and the balance is Fe.

[0044] The steps of this method are as follows:

[0045] The stainless steel bar blanked according to the specifications is heated to the forging temperature, and after upsetting, punching, and pre-rolling, it is made into a steel bar with a height of H 1 , thickness B 1 , the outer diameter is R 1 rectangular ring blank;

[0046] like figure 1 As shown, the rectangular ring blank 1 is loaded into the ring rolling mill, the core roll 3 passes through the middle of the rectangular ring blank 1, the core roll 3 is driven and the rectangular ring blank 1 approaches the main roll 2, and then the tapered roll 4 is driven Near ...

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Abstract

The invention discloses a rolling method for a rectangular isotropous stainless steel ring piece. The rolling method includes the steps that firstly, a stainless steel rod is heated to the forging temperature to be upset, punched and pre-rolled, and a rectangular ring blank is manufactured; and secondly, the rectangular ring blank is put into a ring rolling machine, a conic roller is lifted up by 5 mm to 10 mm, the rectangular ring blank is inclined, then rolling forming is conducted, and the rectangular stainless steel ring piece is obtained. By the adoption of the method, the flowing direction of materials in the rolling process is changed, and isotropous mechanical performance of the rectangular ring piece is kept the same, so that the comprehensive mechanical performance of the rectangular ring piece is improved. The method is used for producing the rectangular isotropous stainless steel ring piece.

Description

technical field [0001] The invention relates to a rolling method of a stainless steel rectangular ring, in particular to an isotropic rolling method of a stainless steel rectangular ring. Background technique [0002] Ring rolling is currently one of the most effective means of producing high-performance seamless rings, and has been widely used in many fields such as aviation and aerospace. The production of rectangular rings is mostly carried out by radial rolling. The rings and blanks are designed at the same height. The tapered rollers only play the role of preventing the rings from climbing and limiting the height increase of the rings. The axial deformation is small. As a result, the radial mechanical properties of the ring are quite different from the axial mechanical properties. With the development and progress of ring rolling technology, people have gradually mastered the radial / axial bidirectional rolling forming method. The axial mechanical properties of rectangu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21H1/06
CPCB21H1/06
Inventor 李艳英田丰李明徐文帅杨志国
Owner GUIZHOU ANDA AVIATION FORGING
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