Forging process of wind power main shaft

Abstract

The invention relates to a processing method of a wind power main shaft, in particular to a forging process of a wind power main shaft. The forging process of the wind power main shaft comprises the following steps of: selecting material, heating, upsetting, drawing out for ejection, blanking, forming by second fire, upsetting a workpiece in a mold to form a flange, clamping the flange with a fixture, forming a shaft body to a required size, carrying out furnace cold-hot treatment on the workpiece, normalizing tempering primary recrystallization or normalizing tempering secondary recrystallization, warming and cooling three times, sawing, carrying out blank flaw detection, turning roughly, carrying out flaw detection for the second time, tempering detection, mechanical property detection and the like, carrying out flaw detection for the third time, and turning finely.

Description

technical field [0001] The invention relates to a processing method of a wind power main shaft, in particular to a forging process of a wind power main shaft. Background technique [0002] Forging is a common forming method in mechanical manufacturing. The as-cast looseness and welding holes of the metal can be eliminated by forging, and the mechanical properties of forgings are generally better than castings of the same material. For important parts with high load and severe working conditions in machinery, forgings are mostly used except for plates, profiles or weldments that can be rolled with simple shapes. In the forging process, the billet undergoes obvious plastic deformation as a whole, and there is a relatively large amount of plastic flow; in the stamping process, the billet is mainly formed by changing the spatial position of each part area, and there is no large-distance plastic flow inside it. Forging is mainly used to process metal parts, and can also be used...

AI Technical Summary

Problems solved by technology

However, due to the constraints of the natural environment, the blades of the huge wind rotor and the wind power main shaft deteriorate and are easily damaged. As the core mechanical component of the wind power generator, the wind power main shaft puts forward higher requirements for the design, manufacture and process of the wind power main shaft

[0004] The casted wind power spindle has accurate blank shape and size, small processing volume and low cost, but has casting defects (pores, cracks, inclusions); the internal structure of the casting is poorly streamlined (if it is a cutting part, the streamlined form is even worse); at present, a few low-quality Wind power spindle castings are cast, and small castings that require high dimensional accuracy can use special castings, such as permanent casting, precision casting, pressure casting, investment casting and centrifugal casting, etc.

The disadvantage is that this type of wind power spindle is prone to leakage during use

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