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Method for manufacturing special-shaped ring forge piece of large wind power flange

A manufacturing method and a special-shaped ring technology, which are applied in the manufacturing field of large-scale wind tower flange special-shaped ring forgings, can solve the problems of poor rolling process stability, large consumption of raw materials, low production efficiency, etc., and achieve high production efficiency and finishing man-hours. Less, good flatness effect

Inactive Publication Date: 2014-09-10
ZHANGJIAGANG HAILU ANNULAR FORGINGS
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Problems solved by technology

[0002] The currently used manufacturing method for large (3-5m in diameter) wind tower flange special-shaped ring forgings is the traditional radial and axial rectangular cross-section rolling process. This manufacturing method consumes a lot of raw materials, requires good hardenability of the material, takes a long time for subsequent machining, poor stability of the rolling process, and low production efficiency

Method used

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  • Method for manufacturing special-shaped ring forge piece of large wind power flange
  • Method for manufacturing special-shaped ring forge piece of large wind power flange
  • Method for manufacturing special-shaped ring forge piece of large wind power flange

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Embodiment Construction

[0017] The manufacturing method of the large-scale wind tower flange special-shaped ring forging according to the present invention will be further described in detail through specific examples below.

[0018] The manufacturing method of the special-shaped ring forging of the large wind tower flange, first of all, as figure 1 The ring forging shown is simulated in the ring rolling and rolling process to determine the optimum outer diameter of the forging blank when the first fire diameter is rolled in an axial rectangular section, guide the design of the ring rolling process, and then carry out actual production. Including the following process steps:

[0019] a) Take the billet steel—a continuous casting round billet ingot such as φ600 as the raw material, and the non-metallic inclusions in the billet steel meet the requirements of the following table:

[0020]

[0021] Then cut according to production requirements.

[0022] b) Forging billet ring rolling process: first,...

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Abstract

The invention relates to a method for manufacturing a special-shaped ring forge piece of a large wind power flange. According to the method for manufacturing the special-shaped ring forge piece of the large wind power flange, a bar is adopted to serve as a workblank, the workblank in a reasonable shape is obtained by conducting upsetting and punching on the workblank, a rectangular section in the axial direction of a fire diameter and two fire closed cavity special-shaped sections are rolled on the well manufactured workblank in the reasonable shape, and the required part is finally obtained through machining. According to the method for manufacturing the special-shaped ring forge piece of the large wind power flange, metal of all portions in the radial direction and the axial direction of the workblank is distributed three times through upsetting, rolling of the rectangular section and rolling of the special-shaped section. When the method is used for manufacturing the large wind power generation tower flange, the utilization rate of material is high, the production efficiency is high, a larger amount of subsequent machining time is saved, the metal of all the portions, in the radial direction and the axial direction, of the forge piece is evenly distributed, the structural property existing after thermal processing is improved, the quality is stable, and the method is particularly suitable for efficient and mass production of large wind power flanges.

Description

technical field [0001] The invention relates to a method for manufacturing a special-shaped ring forging of a large-scale wind tower flange. Background technique [0002] The currently used manufacturing method for large (3-5m in diameter) wind tower flange special-shaped ring forgings is the traditional radial and axial rectangular cross-section rolling process. This manufacturing method consumes a lot of raw materials, requires good hardenability of the material, takes a long time for subsequent machining, poor stability of the rolling process, and low production efficiency. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a material-saving, energy-saving, high-efficiency and stable manufacturing method of a special-shaped ring forging of a large-scale wind tower flange. [0004] In order to solve the above-mentioned problems, the technical solution adopted in the present invention is: a method for manufacturin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23P15/00
CPCB23P15/00
Inventor 吴剑戴玉同徐锋陆亚娟黄诚
Owner ZHANGJIAGANG HAILU ANNULAR FORGINGS
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