Wind-powered main shaft forging method

A wind power spindle and flange technology, applied in the field of forging production, can solve problems such as low forging precision, complicated process, and low efficiency, and achieve the effects of improving forging quality, improving work efficiency, and reducing forging procedures
CN102806291BActive Publication Date: 2014-07-23JIANGSU LINGFEI FORGING
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
JIANGSU LINGFEI FORGING
Publication Date
2014-07-23

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Abstract

The invention relates to a wind-powered main shaft forging method. The wind-powered main shaft forging method comprises the following steps of inspecting a material; heating the material; taking out a blank which is formed by annealing the material for the first time, pre-forging, upsetting, drawing and printing the blank, performing pre-forging to form the blank, and blanking; finally forging the blank to form a main shaft by annealing for the second time, forging a flange end on a hollow rotary worktable, and drawing the main shaft until a shaft body has forging size; performing re-crystallization normalized tempering thermal treatment by using a one-time thermal loading furnace after forging the wind-powered main shaft; roughly turning the wind-powered main shaft and detecting flaws through ultrasonic wave; hardening and tempering the wind-powered main shaft, and performing nondestructive inspection and physical and chemical inspection on the wind-powered main shaft; finely turning the wind-powered main shaft; and packaging the wind-powered main shaft. The wind-powered main shaft forging method provided by the invention has the characteristics that the efficiency is high, the energy is saved, the cost is reduced, and the forging quality is improved.
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Description

Technical field

[0001] The invention relates to a forging method for a wind power main shaft, belonging to the technical field of forging production. Background technique

[0002] At present, with the rapid development and maturity of the wind power industry in my country, the forging output of wind power spindles has been greatly improved in China. Nowadays, the manufacturing development trend of large-scale MW wind power spindles is toward large-scale development. Its forgings are heavier and heavier, and the quality requirements for forgings are getting higher and higher. The design, manufacturing and forging production methods of wind power spindles are proposed higher Claim.

[0003] The mainstream wind power spindle forging method still uses the traditional forging process and post-forging heat treatment process. There are many shortcomings in the use of this forging method: using traditional forging methods, the number of heating times increases, resulting in increased fir...

Claims

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