Wind turbine main shaft forging process

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: 2020-07-31
ZHANGJIAGANG CITY GUANGDA MACHINERY FORGING
View PDF9 Cites 4 Cited by
  • 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

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Wind turbine main shaft forging process
  • Wind turbine main shaft forging process

Examples

Experimental program
Comparison scheme
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....

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention discloses a wind turbine main shaft forging process, and particularly relates to the technical field of wind turbine main shaft forging process. The wind turbine main shaft forging process comprises the following steps of S1, preprocessing raw materials; S2, heating; S3, blank making; S4, upsetting; S5, drawing out; S6, upsetting the flange end; S7, drawing out a core rod; S8, carrying out heat treatment; and S9, detecting. According to the forging process, the core rod is heated before being drawn out, so that the temperature rise amount of the core rod is reduced after the corerod enters a forge piece, the heating expansion amount of the core rod is effectively reduced, the core rod is cooled after being drawn out, the cooling size of the core rod is effectively reduced, and the core rod is effectively prevented from being tightly attached to and locked with the hole wall of the forge piece, so that the friction force between the core rod and the forge piece is reduced, the core rod can be withdrawn conveniently, and the machining efficiency is guaranteed.

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

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Applications(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
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap