Method for machining forge piece of large-scale single-flange anti-explosion motor main shaft of all-fiber texture

An explosion-proof motor and processing method technology, applied in the direction of metal processing equipment, etc., can solve the problems of poor impact resistance, easy vibration, and easy deformation of the flange at the root of the flange, so as to improve product quality and economic benefits, and avoid internal Microcracks, the effect of improving the overall mechanical properties

Active Publication Date: 2014-07-02
陕西华威科技股份有限公司
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  • Abstract
  • Description
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AI Technical Summary

Problems solved by technology

[0004] The main purpose of the present invention is to provide a method for processing the main shaft forgings of large single-flange explosion-proof motors with full fiber structure, so as to solve the problem that the overall structure of the main shaft forgings produced by the existing segmental forging method and chopping forging method is not uniform and the fiber structure has no continuity. , The impact resistance of the flange root is poor, the flange is easily deformed, the balance is poor, it is easy to vibrate, generate noise, and even the defect of root fracture

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  • Method for machining forge piece of large-scale single-flange anti-explosion motor main shaft of all-fiber texture
  • Method for machining forge piece of large-scale single-flange anti-explosion motor main shaft of all-fiber texture
  • Method for machining forge piece of large-scale single-flange anti-explosion motor main shaft of all-fiber texture

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Embodiment Construction

[0035] The present invention will be described in detail below in conjunction with specific embodiments and accompanying drawings.

[0036] Processing method of forging large single flange explosion-proof motor spindle with full fiber structure (drawing number: Y13T156.1)

[0037] Step a, raw material quality control, such as figure 1 As shown, steel ingots smelted in electric arc furnace + refined outside the furnace + vacuum degassed are used as raw materials, and the material is 45A, which conforms to Q / HWG-QW07010-2000 and fully meets the JB / T1271-2002I Class I standard. Harmful elements in the chemical composition are controlled as follows: S≤0.025, P≤0.025, Cu≤0.20, H≤2pp pm, 0≤35pp pm, N≤65pp pm;

[0038] Step b, such as figure 2 As shown, the steel ingot is heated in a three-stage heating method. The specific heating process is as follows: the steel ingot is placed in a heating furnace with a temperature lower than 450 °C for 4 hours, and then the temperature is rai...

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Abstract

The invention discloses a method for machining a forge piece of a large-scale single-flange anti-explosion motor main shaft of an all-fiber texture. The method comprises the specific steps of raw material smelting, heating, first heating number twice upsetting and swaging, second heating number flange and step shaft forging, normalization treatment after forging, workblank detection, nondestructive inspection, mechanical property and metallographic examination, semi-finishing, stabilized heat treatment and the like. According to the method, the all-fiber texture of the forged single-flange anti-explosion motor main shaft is even, the flange root is high in impact-resistant mechanical property, and operation is balanced and free of noise. Meanwhile, the method greatly reduces production cost and is good in economic benefit.

Description

technical field [0001] The invention relates to a processing method for a motor spindle forging, in particular to a processing method for a large single-flange explosion-proof motor spindle with full fiber structure. Background technique [0002] At present, nuclear power, petrochemical, coal chemical and other fields are developing very rapidly in my country. The demand and use requirements for large single-flange explosion-proof motor spindles are getting higher and higher, especially the requirements for its service life and failure rate are extremely strict. Higher requirements are put forward in the design, production and manufacture of large single-flange explosion-proof motor spindles. [0003] There are generally two forging methods for traditional large single-flange explosion-proof motor spindles: one is segmental forging, that is, the spindle and flange structures are forged separately, and the flange is welded to the shaft end of the spindle after completion. The...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23P15/00B21J5/00C21D8/06
CPCB21J5/002B23P15/00C21D8/065
Inventor 王璋张晓芳
Owner 陕西华威科技股份有限公司
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