A forging process of wind power spindle

A technology for wind power spindles and processes, applied in metal processing equipment, mechanical equipment, engine components, etc., can solve the problems of increasing the difficulty of mandrel extraction, high friction, and reducing processing efficiency, etc., to reduce friction and improve quality Good, the effect of prolonging the service life

Active Publication Date: 2022-02-15
ZHANGJIAGANG CITY GUANGDA MACHINERY FORGING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In the prior art, the mandrel can be used to elongate the forging of the wind power main shaft. Since the forging has a high temperature during the elongation, the temperature of the mandrel entering the forging will increase, causing the mandrel to rise too high and make the mandrel The volume expansion is too large and it is close to the hole wall of the forging, which makes the friction between the two too large and increases the difficulty of pulling out the mandrel, thus easily reducing the processing efficiency

Method used

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  • A forging process of wind power spindle
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Effect test

Embodiment 1

[0030] The present invention provides a wind power main shaft forging process, the specific forging steps are as follows:

[0031] S1. Raw material pretreatment: The steps of electric furnace smelting, LF refining and VD vacuum treatment for steel ingots are as follows:

[0032] S1.1. Electric furnace smelting: the furnace wall cluster oxygen lance ultra-high power electric arc furnace is used to strengthen oxygen supply, and carbon powder is injected into the furnace to create foam slag operation to ensure sufficient decarburization amount and decarburization speed;

[0033] S1.2, LF refining: Bottom blowing argon gas stirring during power transmission, using diffusion deoxidizer for diffusion deoxidation;

[0034] S1.3, VD vacuum treatment: Before entering the VD station, remove part of the refining slag to enhance the vacuum degassing effect, reduce slag overflow, and ensure the ladle is clear, so as to obtain steel ingots with low oxygen and high cleanliness;

[0035] S2....

Embodiment 2

[0044] The present invention provides a wind power main shaft forging process, the specific forging steps are as follows:

[0045] S1. Raw material pretreatment: The steps of electric furnace smelting, LF refining and VD vacuum treatment for steel ingots are as follows:

[0046] S1.1. Electric furnace smelting: the furnace wall cluster oxygen lance ultra-high power electric arc furnace is used to strengthen oxygen supply, and carbon powder is injected into the furnace to create foam slag operation to ensure sufficient decarburization amount and decarburization speed;

[0047] S1.2, LF refining: Bottom blowing argon gas stirring during power transmission, using diffusion deoxidizer for diffusion deoxidation;

[0048]S1.3, VD vacuum treatment: Before entering the VD station, remove part of the refining slag to enhance the vacuum degassing effect, reduce slag overflow, and ensure the ladle is clear, so as to obtain steel ingots with low oxygen and high cleanliness;

[0049] S2. ...

Embodiment 3

[0058] The present invention provides a wind power main shaft forging process, the specific forging steps are as follows:

[0059] S1. Raw material pretreatment: The steps of electric furnace smelting, LF refining and VD vacuum treatment for steel ingots are as follows:

[0060] S1.1. Electric furnace smelting: the furnace wall cluster oxygen lance ultra-high power electric arc furnace is used to strengthen oxygen supply, and carbon powder is injected into the furnace to create foam slag operation to ensure sufficient decarburization amount and decarburization speed;

[0061] S1.2, LF refining: Bottom blowing argon gas stirring during power transmission, using diffusion deoxidizer for diffusion deoxidation;

[0062] S1.3, VD vacuum treatment: Before entering the VD station, remove part of the refining slag to enhance the vacuum degassing effect, reduce slag overflow, and ensure the ladle is clear, so as to obtain steel ingots with low oxygen and high cleanliness;

[0063] S2....

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Abstract

The invention discloses a wind power main shaft forging process, and specifically relates to the technical field of wind power main shaft forging. The specific forging steps are as follows: S1, raw material pretreatment; S2, heating; S3, blank making; S4, upsetting; S5, elongation; S6 , Upsetting of the flange end; S7, mandrel elongation; S8, heat treatment; S9, detection. In the present invention, the mandrel is heated before the mandrel is elongated, so that the temperature rise of the mandrel is reduced after entering the forging, thereby effectively reducing its thermal expansion, and the mandrel is cooled after being elongated, effectively cooling the mandrel The volume is reduced, which effectively prevents the mandrel and the hole wall of the forging from clinging to each other, so that the friction between the mandrel and the forging is reduced, which facilitates the withdrawal of the mandrel, thereby ensuring the processing efficiency.

Description

technical field [0001] Embodiments of the present invention relate to the technical field of wind power main shaft forging, in particular to a wind power main shaft forging process. Background technique [0002] Wind power is to convert the kinetic energy of the wind into electric energy. As a clean and renewable energy, wind energy has attracted more and more attention from all over the world. Determines the service life of the entire generator set. The production of wind power main shaft usually adopts forging process. [0003] Forging is a processing method that uses forging machinery to apply pressure to metal blanks to cause plastic deformation to obtain forgings with certain mechanical properties, certain shapes and sizes. One of the two major components of forging (forging and stamping), through forging It can eliminate defects such as as-cast looseness produced in the metal smelting process, optimize the microstructure, and at the same time, due to the preservation...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B21K1/10B21J1/06B21J5/06B21J5/10C22C33/04
CPCB21K1/10B21K1/063B21J1/06B21J5/06B21J5/10C22C33/04
Inventor 顾金才于广文周青春罗晓芳徐卫明
Owner ZHANGJIAGANG CITY GUANGDA MACHINERY FORGING
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