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A method of manufacturing wind power flanges for low temperature environments

A technology for wind power flanges and low-temperature environments, which is applied in the direction of manufacturing tools, furnaces, heat treatment equipment, etc., can solve problems such as unsatisfactory, and achieve the effect of optimizing the forging molding process and heat treatment process

Active Publication Date: 2019-05-17
SHANDONG IRAETA HEAVY IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the low-temperature impact performance of this material can only meet the impact performance requirements at -50°C. For wind power generation systems at lower ambient temperatures, the higher low-temperature impact requirements required by the wind power flange cannot meet the requirements.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment １

[0019] The wind turbine flange with finished size of φ6000φ5318×227 (170) (unit: mm) adopts optimized Q345E material (chemical composition: 0.14C, 0.34Si, 1.31Mn, 0.013P, 0.003S, 0.044V, 0.037Nb, 0.087Ni, 0.079Cr, 0.055Cu, 0.017Al, 0.045Mo, 0.0034Ti, 0.0005B, H2 (hydrogen) 1.5ppm, O (oxygen) 15ppm, 0.0074N). Its main process flow is:

[0020] (1) Raw material blanking: use blanks that meet the above technical requirements, and cut the blanks by sawing, and the blanking weight meets the production requirements of the flange;

[0021] (2) Forging: The forming of the flange is carried out by free forging + ring rolling. After the heated billet is changed by upsetting, it is punched and expanded to a certain size to ensure that the size of the billet meets the requirements of forging ratio, ring rolling and furnace heating. The reheated forging blank is rolled radially and axially by a ring rolling machine to ensure that its forming size meets the blank size requirements of the ...

Embodiment 2

[0025] The wind power flange with finished size of φ6000φ5318×227 (170) (unit: mm) adopts optimized Q345E material (chemical composition: 0.15C, 0.31Si, 1.39Mn, 0.005P, 0.001S, 0.039V, 0.036Nb, 0.065Ni, 0.072Cr, 0.042Cu, 0.015Al, 0.015Mo, 0.0019Ti, H2 (hydrogen) 1.5ppm, O (oxygen) 18ppm, 0.0049N). Its main process flow is:

[0026] (1) Raw material blanking: use blanks that meet the above technical requirements, and cut the blanks by sawing, and the blanking weight meets the production requirements of the flange;

[0027] (2) Forging: The forming of the flange is carried out by free forging + ring rolling. After the heated billet is changed by upsetting, it is punched and expanded to a certain size to ensure that the size of the billet meets the requirements of forging ratio, ring rolling and furnace heating. The reheated forging blank is rolled radially and axially by a ring rolling machine to ensure that its forming size meets the blank size requirements of the flange, and...

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Abstract

The invention discloses a method for manufacturing a wind power flange used in a low-temperature environment. Chemical components of Q345E is optimized further, so that a forging forming process and a heat treatment process of the wind power flange are optimized; and the technical problem that the impact property of an electric flange at the temperature of -60 DEG C is poor is solved.

Description

technical field [0001] The invention relates to the technical field, in particular to a method for manufacturing a wind power flange for low-temperature environments. Background technique [0002] As a clean energy source, wind power has increasingly wide application prospects. Today, when global wind power generation is in the ascendant, wind turbines used in special environments have also put forward stricter requirements on the performance of wind power flanges. [0003] The existing Q345E (or S355NL) material for wind power flanges has been widely used at home and abroad due to its good welding performance, high strength, good plasticity and low temperature impact toughness. However, the low-temperature impact performance of this material can only meet the impact performance requirements at -50°C. For wind power generation systems at lower ambient temperatures, the higher low-temperature impact requirements required by the wind power flange cannot meet the requirements....

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C38/02C22C38/04C22C38/12C22C38/08C22C38/16C22C38/14C22C38/38C22C38/24C22C38/26C22C38/20C22C38/06C22C38/22C22C38/28C22C38/58C22C38/46C22C38/48C22C38/42C22C38/44C22C38/50C21D1/28C21D9/00C21D8/00
CPCC21D1/28C21D8/005C21D9/0068C21D2261/00C22C38/02C22C38/04C22C38/06C22C38/08C22C38/12C22C38/14C22C38/16C22C38/20C22C38/22C22C38/24C22C38/26C22C38/28C22C38/38C22C38/42C22C38/44C22C38/46C22C38/48C22C38/50C22C38/58
Inventor 牛余刚郑伟任秀凤赵丽美尚贺军
Owner SHANDONG IRAETA HEAVY IND
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