Processing method of Cr-Zr-Cu ring

A processing method, chrome-zirconium copper technology, applied in the manufacture of tools, other manufacturing equipment/tools, etc., can solve the problems of mechanical properties, low hardness, and mechanical properties that cannot meet the high-speed operation of the motor, and achieve high mechanical properties and large outer diameter , good electrical conductivity

Active Publication Date: 2010-10-13
WUXI TONGWEI ELECTRIC POWER EQUIP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Its mechanical properties and hardness are very low, which cannot meet the high-speed operation and high-torque mechanical properties of the motor, while the mechanical properties of chrome-zirconium copper rings are high: tensile strength ≥ 360MPa, yield strength ≥ 270MPa, elongation ≥ 15%, Hardness≥110HB

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] 1. Raw material chrome-zirconium copper ingot blank selection:

[0033] (a), Cu content ≥ 98.22%, Cr content: 0.5-1.2%, Zr content: 0.03-0.3%; density 8.9g / cm 3 ;

[0034] (b) Finished product CMC1 / 396 / 276×27, specifications: outer diameter = 396mm, inner hole = 276mm, thickness = 27mm;

[0035] (c), machining allowance: outer diameter = 396mm+10, inner hole = 276mm-10, thickness = 27mm+8;

[0036] Hot forging size: outer diameter = 360mm, inner hole = 235mm, thickness = 50mm;

[0037] Cold forging size: outer diameter = 406mm, inner hole = 266mm, thickness = 35mm;

[0038] According to the formula for calculating the weight of chrome-zirconium copper ingot blank: 24Kg;

[0039] Inspection: The chemical composition of each batch of chromium, zirconium and copper purchased is checked against the quality assurance certificate, and can only be put into storage after passing the test.

[0040] 2. Hot forging process:

[0041] a) The equipment used is: 750kg air bell, ...

Embodiment 2

[0064] 1. Raw material chrome-zirconium copper ingot blank selection:

[0065](a), Cu content ≥ 98.22%, Cr content: 0.5-1.2%, Zr content: 0.03-0.3%; density 8.9g / cm 3 ;

[0066] (b) Finished product CMC1 / 560 / 400×44, specifications: outer diameter = 560mm, inner hole = 400mm, thickness = 44mm;

[0067] (c), machining allowance: outer diameter = 560mm+12, inner hole = 400mm-12, thickness = 44mm+11;

[0068] Hot forging size: outer diameter = 520mm, inner hole = 365mm, thickness = 70mm;

[0069] Cold forging size: outer diameter = 572mm, inner hole = 388mm, thickness = 55mm;

[0070] According to the formula for calculating the weight of the chrome-zirconium copper ingot blank: it is 71Kg.

[0071] Inspection: The chemical composition of each batch of chromium, zirconium and copper purchased is checked against the quality assurance certificate, and can only be put into storage after passing the test.

[0072] 2. Hot forging process:

[0073] a) The equipment used is: 750kg ...

Embodiment 3

[0096] 1. Raw material chrome-zirconium copper ingot blank selection:

[0097] (a), Cu content ≥ 98.22%, Cr content: 0.5-1.2%, Zr content: 0.03-0.3%; density 8.9g / cm;

[0098] (b) Finished product CMC1 / 705 / 563×56, specifications: outer diameter = 705mm, inner hole = 563mm, thickness = 56mm,

[0099] (c), machining allowance: outer diameter = 705mm+13, inner hole = 563mm-13, thickness = 56mm+12,

[0100] Hot forging size: outer diameter = 665mm, inner hole = 520mm, thickness = 83mm;

[0101] Cold forging size: outer diameter = 718mm, inner hole = 550mm, thickness = 68mm;

[0102] According to the formula for calculating the weight of the chrome-zirconium copper ingot blank: it is 106Kg.

[0103] Inspection: The chemical composition of each batch of chromium, zirconium and copper purchased is checked against the quality assurance certificate, and can only be put into storage after passing the test.

[0104] 2. Hot forging process:

[0105] a) The equipment used is: 750kg ai...

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Abstract

The invention relates to a processing method of Cr-Zr-Cu rings, in particular to a squirrel-cage type rotor which is formed by welding the Cr-Zr-Cu rings and rotor copper bars; the Cr-Zr-Cu ring is a short-circuiting ring which is arranged at two ends of the rotor of a wind driven generator and a high-speed train pulling motor, belonging to the technical field of hot processing. The processing comprises the following steps: Cr-Zr-Cu ingot blank is chosen as raw material, the processes of hot forging, solution treatment, cold forging, ageing treatment, milling processing and the like are carried out, and then detection / package is carried out, thereby obtaining finished products. The Cr-Zr-Cu ring has good electricity-conducting property and can meet the bearing capacity of a motor; the mechanical capacity is high, and the ring is wear-resistant and hot-resistant, and can work under 400 DEG C, thereby improving the reliability of the motor and prolonging the service life of the motor.

Description

technical field [0001] The invention relates to a processing method of a chromium-zirconium copper ring. Specifically, the chromium-zirconium copper ring is welded with a rotor copper guide bar to form a squirrel-cage rotor, which is a short-circuit ring at both ends of a rotor of a wind power generator and a high-speed train traction motor, and belongs to thermal field of processing technology. Background technique [0002] At present, the short-circuit rings used at both ends of the rotors of wind turbines and high-speed train traction motors are usually made of copper rings, and only chrome-zirconium copper rings with an outer diameter of less than 20Kg and an outer diameter of less than 500 can be produced. Mechanical properties of copper ring: tensile strength ≥ 200MPa, yield strength ≥ 40MPa, elongation ≥ 35%, hardness ≥ 45HB. Its mechanical properties and hardness are very low, which cannot meet the high-speed operation and high-torque mechanical properties of the mo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23P23/04
Inventor 殷建伟
Owner WUXI TONGWEI ELECTRIC POWER EQUIP
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