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Method for manufacturing impeller locking ring forgings for large wind turbines

A manufacturing method and locking ring technology, applied in the field of forging, can solve problems such as ring forging technology is not very mature, achieve the effect of shortening the production cycle and improving product quality

Inactive Publication Date: 2017-02-15
ZHANGJIAGANG HAILU ANNULAR FORGINGS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the enterprise technology of ring forgings is not very mature at present.

Method used

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  • Method for manufacturing impeller locking ring forgings for large wind turbines
  • Method for manufacturing impeller locking ring forgings for large wind turbines

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Embodiment Construction

[0034] The present invention is further illustrated by the following examples: According to the following examples, the present invention can be better understood. However, those skilled in the art can easily understand that the specific material ratios, process conditions and results described in the examples are only used to illustrate the present invention, and should not and will not limit the present invention described in the claims.

[0035] A method for manufacturing a large-scale wind power impeller locking ring forging, the forging size is Φ2220mm×Φ1840mm×380mm, and the process method includes:

[0036] 1. Cutting material:

[0037] Material grade: 42CrMo billet specification: Φ800 billet, furnace number: E21507061QX, billet weight: 7150kg. Cutting requirements: the cutting surface is flat, without creases, and the cutting surface is perpendicular to the center line of the square ingot.

[0038] The chemical composition of 42CrMo billet includes according to mass r...

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Abstract

The invention discloses a method for manufacturing impeller locking ring forgings for large wind turbines. The dimensions of the forgings are phi2220 mm*phi1840 mm*380 mm. The process method for the impeller locking ring forgings comprises the following steps: (1) discharging; (2) heating; (3) blank production with a press; (4) ring milling; (5) quenching and tempering heat treatment; and (6) finish machining. According to the process method, the production cycle can be shortened, the product quality can be improved, and the performance of the manufactured forgings meets the mechanical requirements for the impeller locking ring forgings for the large wind turbines.

Description

technical field [0001] The present application relates to the field of forging technology, in particular to a method for manufacturing a large-scale wind power impeller locking ring forging. Background technique [0002] As a clean and renewable energy, wind energy has been paid more and more attention by countries all over the world. Its reserves are huge, and the global wind energy is about 2.74×10 9 MW, of which the available wind energy is 2×10 7 MW is 10 times larger than the total amount of water energy that can be developed and utilized on the earth. At the same time, equipment in the wind power industry is also becoming larger and more advanced. In 2011, Shanghai Hangzhou Bay built a wind turbine with the largest impeller in the world. Therefore, the requirements for the design and manufacture of molds, precision, quality, life and delivery time are getting higher and higher, and the competition among mold companies is also intensifying. Therefore, how to shorten ...

Claims

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Application Information

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IPC IPC(8): B21K1/26B21J1/06C21D1/25C21D1/30C22C38/04C22C38/02C22C38/06C22C38/44C22C38/42
CPCB21K1/26B21J1/06C21D1/25C21D1/30C22C38/02C22C38/04C22C38/06C22C38/42C22C38/44
Inventor 徐锋吴剑朱乾皓史欠欠陈磊张斌
Owner ZHANGJIAGANG HAILU ANNULAR FORGINGS
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