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Rolling method for isotropic high-temperature nickel base alloy rectangular ring

A technology of nickel-based superalloy and rectangular rings, applied in metal rolling, metal processing equipment, etc., can solve the problem that the radial mechanical properties and axial mechanical properties are quite different, consistent, and cannot guarantee the mechanical properties of rings, etc. question

Inactive Publication Date: 2016-03-16
GUIZHOU ANDA AVIATION FORGING
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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 isotropic high-temperature nickel base alloy rectangular ring

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[0043]The main chemical element content (percentage by weight) of the alloy is: C content ≤ 0.08%, Cr content 17.0% ~ 21.0%, Ni content 50.0% ~ 55.0%, Co content ≤ 1.0%, Mo content 2.80% ~3.30%, Al content 0.30%~0.70%, Ti content 0.75%~1.15%, Nb content 4.75%~5.50%, B content ≤0.006%, Mg content ≤0.01%, Mn content ≤0.35 %, Si content ≤0.35%, P content ≤0.015%, S content ≤0.015%, Cu content ≤0.30%, Ca content ≤0.01%, Pb content ≤0.0005%, Se content ≤0.0003% , The balance is Fe.

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

[0045] Heating the nickel-based high-temperature alloy rods blanked according to the specifications to the forging temperature, after upsetting, punching and pre-rolling, the height is H 1 , thickness B 1 , the outer diameter is R 1 rectangular ring blank;

[0046] Such as 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 ...

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Abstract

The invention discloses a rolling method for an isotropic high-temperature nickel base alloy rectangular ring. The rolling method comprises the following steps: first, a high-temperature nickel base alloy bar is heated to a forging temperature, and after being upset, punched and pre-rolled, the heated high-temperature nickel base alloy bar is made into a rectangular ring blank; and then, the rectangular ring blank is loaded on a rolling mill, and cone rollers are lifted by h which is 5-10 mm, so that the rectangular ring blank inclines, and next, the inclining rectangular ring blank is rolled to obtain the high-temperature nickel base alloy rectangular ring. According to the rolling method, the mechanical properties of the rectangular ring are enabled to stay the same by changing the flowing direction of a material in rolling, so that the comprehensive mechanical properties of the rectangular ring is improved. The rolling method is used for producing isotropic high-temperature nickel base alloy rectangular rings.

Description

technical field [0001] The invention relates to a rolling method of a nickel-based high-temperature alloy rectangular ring, in particular to an isotropic rolling method of a nickel-based high-temperature alloy 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...

Claims

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Application Information

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IPC IPC(8): B21H1/06B21J5/00
CPCB21H1/06B21J5/002
Inventor 王斌魏志坚杨晋袁慧杨孝荣
Owner GUIZHOU ANDA AVIATION FORGING
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