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Method for manufacturing chromium-zirconium-copper tubes for electrode material

A technology of electrode material and manufacturing method, which is applied in the field of stretching of metal pipes, can solve the problems of large central hole position deviation of copper pipes, poor aperture accuracy and finish, waste of manpower and material resources, etc., and achieves reduced electricity costs and high aperture accuracy , the effect of staff reduction

Inactive Publication Date: 2009-11-18
江苏金圣铜业科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the disadvantage of this manufacturing method is that the central hole of the copper tube has a large deviation, commonly known as eccentricity, and the aperture accuracy and finish are poor. There are a large number of substandard products in production, and the production cost is increased. serious waste of resources

Method used

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  • Method for manufacturing chromium-zirconium-copper tubes for electrode material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Finished product specifications: chrome-zirconium copper tube with an outer diameter of φ6.0mm and an inner diameter of φ1.2±0.05mm

[0019] The hard chromium-zirconium copper tube blank with an outer diameter of φ38mm and a wall thickness of 6.3mm is subjected to the first lining drawing, and then 4 times of empty drawing to an outer diameter of φ18.85mm and an inner diameter of φ10.0mm; and then the second The secondary lining is drawn to an outer diameter of φ18.1mm and an inner diameter of φ7.75mm; the copper tube after the second lining is vacuum annealed and softened at 410-430°C, kept for 2 hours, cooled for 12 hours, and then carried out 4 times Empty drawing to an outer diameter of φ11mm and an inner diameter of φ2.65mm, and the copper pipe after 4 air-drawings is then subjected to a third liner drawing to an outer diameter of φ10.50mm and an inner diameter of φ2.50mm; finally select as shown in the attached drawing The sizing length H is 0.5 ~ 0.9mm, and the c...

Embodiment 2

[0021] Finished product specifications: chrome-zirconium copper tube with an outer diameter of φ10.0mm and an inner diameter of φ1.8±0.05mm

[0022] The hard chrome-zirconium copper tube billet with an outer diameter of φ40mm and a wall thickness of 10mm is subjected to the first lining drawing correction, and then 4 times of empty drawing to an outer diameter of φ26.0mm and an inner diameter of φ11.5mm; and then the second The secondary lining is drawn to an outer diameter of φ25mm and an inner diameter of φ10.1mm; the copper tube after the second lining is vacuum annealed and softened at 530-570°C, kept warm for 2 hours, and cooled for 15 hours; and then carried out 3 times of empty drawing When the outer diameter is φ15mm and the inner diameter is φ3.85mm, the copper pipe after 3 times of empty drawing is subjected to the third lining drawing to the outer diameter of φ14.5mm and the inner diameter is φ3.7mm; finally, the sizing is selected as shown in the attached drawing T...

Embodiment 3

[0024] Finished product specifications: chrome-zirconium copper tube with an elliptical shape, the outer diameter is 7.92*7.62mm, and the inner diameter is φ1.2±0.05mm

[0025] The hard chromium-zirconium copper tube blank with an outer diameter of φ38mm and a wall thickness of 8mm is subjected to the first lining drawing, and then 5 times of empty drawing to an outer diameter of φ21.0mm and an inner diameter of φ9.5mm; and then the second time The lining is drawn to an outer diameter of φ20mm and an inner diameter of φ8.45mm; the copper tube after the second lining is annealed and softened at 460-480°C in vacuum, kept for 2 hours, and cooled for 13 hours; The diameter is φ13mm, the inner diameter is φ3.05mm, and the copper pipe after three empty drawing is subjected to the third lining drawing to the outer diameter of φ12.3mm, and the inner diameter is φ2.8mm; finally, the sizing length H shown in the attached drawing is selected. 0.6 ~ 1.3mm, the cavity angle R is 14 ~ 20° f...

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Abstract

The invention discloses a method for manufacturing chromium-zirconium-copper tubes for an electrode material. The method comprises the following steps: performing lining pull on a hard-state chromium-zirconium-copper tube blank which is phi 38 to 40 mm in outer diameter and 5 to 10 mm in wall thickness for the first time; performing empty pull on the tube blank 4 to 6 times after lining pull; performing lining pull for the second time; annealing the tube blank subjected to lining pull for the second time at a temperature of between 410 and 570 DEG C in vacuum; performing empty pull on the annealed tube blank 3 to 5 times; performing lining pull for the third time; performing empty pull 2 to 3 times on the tube blank which is subjected to the lining pull for the third time and combined through a molding die which is 0.5 to 1.5 mm in sizing length and 14 to 26.5 degrees in cavity-entering angle; and obtaining a chromium-zirconium-copper tube used for electrode material. The method has the advantages of advanced process, simple operation and high machining precision, high concentricity of center holes, stable inner-hole size and high glossiness of the obtained products, reduced production costs, improved product qualification ratio and reduced waste of manpower, materials and resources.

Description

technical field [0001] The invention relates to a stretching method of a metal pipe, in particular to a method for manufacturing a chromium-zirconium copper pipe used as an electrode material. Background technique [0002] At present, the manufacturing method of chromium-zirconium copper tubes used for electrode materials is as follows: first cut the copper rods to be processed according to the required length, then use a drill bit to drill holes in the copper rods on the instrument lathe, and then string them with the required inner holes. Steel wires of corresponding thickness are forged and pressed, and the steel wires are pulled out after forging to achieve the purpose of processing copper rods into copper tubes. However, the disadvantage of this manufacturing method is that the central hole of the copper tube has a large deviation, commonly known as eccentricity, and the aperture accuracy and finish are poor. There are a large number of substandard products in productio...

Claims

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Application Information

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IPC IPC(8): B21C1/00
Inventor 蒋再良周军蒋超杨晓晨周兰兰
Owner 江苏金圣铜业科技有限公司
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