Isotropic rolling method for cobalt-based high-temperature alloy rectangular ring part
A technology for rectangular rings and high-temperature alloys, which is applied in metal rolling and other directions, can solve the problems of achieving consistency, the large difference between radial mechanical properties and axial mechanical properties, and the inability to guarantee the mechanical properties of rings, etc.
Inactive Publication Date: 2016-03-02
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
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[0043]The main chemical element content (percentage by weight) of the alloy is: 0.05% to 0.15% of C content, 20.0% to 24.0% of Cr content, 20.0% to 24.0% of Ni content, 13.0% to 16.0% of W content, 13.0% to 16.0% of W content, La content 0.03% ~ 0.12%, Si content 0.20% ~ 0.50%, Fe content ≤ 0.30%, B content ≤ 0.015%, Mn content ≤ 1.25%, P content ≤ 0.020%, S content ≤ 0.015 %, containing Ag ≤ 0.0010%, containing Bi ≤ 0.0001%, containing Pb ≤ 0.0010%, containing Cu ≤ 0.07%, and the balance being Co.
[0044] The steps of this method are as follows:
[0045] Heating the cobalt-based high-temperature alloy bar blanked according to the specification to the forging temperature, after upsetting, punching, and pre-rolling, it is made into a material with a height of 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...
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Abstract
The invention discloses an isotropic rolling method for a cobalt-based high-temperature alloy rectangular ring part. The isotropic rolling method comprises the following steps: firstly, heating a cobalt-based high-temperature alloy bar to a forging temperature, and carrying out upsetting, punching and pre-rolling, thereby forming a rectangular ring blank; secondly, mounting the rectangular ring blank on a ring rolling mill, lifting a conical roller by h=5 to 10 mm such that the rectangular ring blank tilts, and then performing rolling forming to obtain the cobalt-based high-temperature alloy rectangular ring part. According to the method, the mechanical properties of the rectangular ring part in various directions are kept consistent by changing a material flowing direction during rolling, and therefore, the comprehensive mechanical properties of the rectangular ring part are improved. The method is used for producing the cobalt-based high-temperature alloy isotropic rectangular ring parts.
Description
technical field [0001] The invention relates to a rolling method of a cobalt-based high-temperature alloy rectangular ring, in particular to an isotropic rolling method of a cobalt-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...
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IPC IPC(8): B21H1/06
CPCB21H1/06
Inventor 葛金锋王斌李兴品刘建李玉凤
Owner GUIZHOU ANDA AVIATION FORGING
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