All-fiber-texture large-size one-piece flange fan main shaft forging method

A one-piece flange, full-fiber technology, applied in the field of forging, can solve the problems of the flange structure and the shaft body cannot be integrally forged, the balance of the fan spindle is poor, and it is easy to produce jitter, so as to reduce the consumption of raw materials, eliminate the poor balance, and improve the The effect of production efficiency

Active Publication Date: 2014-12-03
陕西华威科技股份有限公司
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Problems solved by technology

[0004] The main purpose of the present invention is to provide a method for forging the main shaft of a large-scale conjoined flange fan with full fiber structure, so as to solve the problem of poor balance of the main shaft of t

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  • All-fiber-texture large-size one-piece flange fan main shaft forging method
  • All-fiber-texture large-size one-piece flange fan main shaft forging method
  • All-fiber-texture large-size one-piece flange fan main shaft forging method

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Embodiment Construction

[0032] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0033] Forging process of 35CrMoReA large one-piece flange blower main shaft, including steps:

[0034] a. Material control: Steel ingots smelted by electric arc furnace + smelted outside the furnace + vacuum degassed are selected as raw materials. The selected material is 35CrMoReA, which conforms to Q / HWG-GW07010-2000, and guarantees that S≤0.025, P≤0.025, H≤2ppm, Q≤35ppm, N≤65ppm, Re=0.08-0.12;

[0035] b. If figure 1 As shown, the steel ingot is loaded into a heating furnace with a temperature lower than 450°C for heat preservation and heating. The heating process is: hold at 450°C for 5 hours, heat up at 60°C per hour to 650°C, hold for 4 hours, then heat up at 60°C per hour to 850°C, hold for 5 hours, and finally heat up at 80°C per hour to 1220°C 12 hours at 1220±10 for 12 hours;

[0036] c. Take the heated steel ingot out of the fu

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Abstract

The invention discloses an all-fiber-texture large-size one-piece flange fan main shaft forging method which comprises the following steps of material selection, heating, primary firing forging, secondary firing forging, heat treatment after forging, rough turning, ultrasonic flaw detection, hardening and tempering, semifinishing, lossless flaw detection, body sampling, mechanical property testing and stable heat treatment. Compared with the conventional twice-forging and welded flange main shaft production method, the all-fiber-texture large-size one-piece flange fan main shaft forging method has the advantages that the welding working procedures are reduced, the time is saved, the raw material consumption is reduced, and the production cost is lowered; a forged flange main shaft is of an all-fiber-texture structure, so that the natural defects that the welded flange is low in balance property and easy to deform and the root is easy to break are totally overcome; a requirement of a large-size fan on the main shaft design is met.

Description

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Claims

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Application Information

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Owner 陕西华威科技股份有限公司
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