CN101579697A - Method for manufacturing chromium-zirconium-copper tubes for electrode material - Google Patents
Method for manufacturing chromium-zirconium-copper tubes for electrode material Download PDFInfo
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- CN101579697A CN101579697A CNA2009100331291A CN200910033129A CN101579697A CN 101579697 A CN101579697 A CN 101579697A CN A2009100331291 A CNA2009100331291 A CN A2009100331291A CN 200910033129 A CN200910033129 A CN 200910033129A CN 101579697 A CN101579697 A CN 101579697A
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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
The present invention relates to a kind of drawing process of metal tube, is a kind of manufacture method of chromium-zirconium-copper tubes for electrode material specifically.
Background technology
The manufacture method of chromium-zirconium-copper tubes for electrode material employing at present is: copper rod to be processed is broken by Len req cut earlier, punching on copper rod with drill bit on the instrument lathe then, string upward and behind the steel wire of the corresponding thickness of required endoporus forges and presses again, extract steel wire after the forging and pressing, reach the purpose that copper rod is processed into copper pipe.Yet the shortcoming that this manufacture method exists is that the central hole location deviation of copper pipe is bigger, is commonly called as core shift, and aperture precision and fineness are relatively poor, occur a large amount of defective works in the production, production cost increases, and has caused the serious waste of human and material resources, resource.
Summary of the invention
Goal of the invention: the objective of the invention is in order to overcome the deficiencies in the prior art, provide a kind of and can improve product percent of pass, reduce production costs and the manufacture method of chromium-zirconium-copper tubes for electrode material simple to operate.
Technical scheme: the manufacture method of a kind of chromium-zirconium-copper tubes for electrode material of the present invention, the step of this method is as follows:
(1) be that φ 38～40mm, wall thickness are that the hard attitude chromium-zirconium-copper tubes base of 5～10mm carries out first time lining and draws with external diameter, so that pipe is revised;
(2) revised pipe being carried out 4～6 road skies, to be pulled to external diameter be that φ 18.85～26mm, internal diameter are φ 8.05～11.5mm;
(3) pipe after drawing and then to sky carries out second time lining and draws that to revise to external diameter be that φ 18.1～25mm, internal diameter are φ 7.75～10.1mm; The purpose of this procedure is that the pipe that sky draws is done further to revise;
(4) pipe after lining draws for the second time is 410～570 ℃ of following vacuum annealings, and insulation is cooled off; The vacuum annealing processing is for fear of the pipe hardening because of repeatedly stretching and cause, and influence draws precision and carries out;
(5) cooled pipe being carried out 3～5 road skies, to be pulled to external diameter be that φ 11～15mm, internal diameter are φ 2.65～3.85mm;
(6) serve as a contrast for the third time that to be pulled to external diameter be that φ 10.50～14.50mm, internal diameter are φ 2.50～3.70mm, to revise the endoporus deviation; This time lining draws the variable in external diameter, aperture all very little, and its main purpose is to revise the endoporus deviation, improves the fineness of tube wall;
(7) will serve as a contrast for the third time after drawing pipe through sizing length be 0.5～1.5mm, to go into the chamber angle be that to be pulled to external diameter be that φ 6～12mm, internal diameter are φ 0.80～2.20mm for 14 °～26.5 ° mould combination carrying out 2～3 road skies, internal diameter deviation ± 0.05mm promptly obtains described chromium-zirconium-copper tubes for electrode material.
The crucial part of this production technology is that the sky in last several roads draws.At different pipes, different trimmed sizes, to select sizing length for use be 0.5～1.5mm, go into the chamber angle is that 14 °～26.5 ° die assembly draws in the production.This mould adopts Chinese style wolfram steel external mold, so promptly can guarantee the stability of product, has guaranteed the fineness of product inwall again.Adopt this programme can produce profile and be products such as circle, ellipse, hexagon, four limit rounds.
Compare with T2 copper with the product of the manufacture method manufacturing of chromium-zirconium-copper tubes for electrode material of the present invention and to have: 1, higher intensity and hardness, tensile strength 〉=450Rm/MPa, Rockwell hardness 〉=78HRB; 2, wear-resisting antiknock, it is not crooked, highly polished to thin sheet as electrospark electrode, can finish the unapproachable effect of pure red metal.
Beneficial effect: compared with prior art, technology advanced person of the present invention, simple to operate, machining accuracy is high, can produce that tube wall is thicker, centre bore is less and aperture precision height, the copper pipe of core shift not, and can simplify the loaded down with trivial details operation of traditional processing technology, and make product qualified rate improve 30%, personnel reduce 20%, the electricity charge reduce 10%, save copper product 5%, price only is 40% of an external like product, really reaches energy-efficient purpose.
Description of drawings
Accompanying drawing is the structural representation of mould among the present invention.
The specific embodiment
The invention will be described in further detail below in conjunction with embodiment, should understand these embodiment and only be used to the present invention is described and be not used in and limit the scope of the invention.
Embodiment 1:
Trimmed size: the chromium-zirconium-copper tubes external diameter is that φ 6.0mm, internal diameter are φ 1.2 ± 0.05mm
With external diameter is that φ 38mm, wall thickness are that the hard attitude chromium-zirconium-copper tubes base of 6.3mm carries out first time lining and draws, and carrying out 4 road skies then, to be pulled to external diameter be that φ 18.85mm, internal diameter are φ 10.0mm; Carrying out second time lining again, to be pulled to external diameter be that φ 18.1mm, internal diameter are φ 7.75mm; Copper pipe after lining draws for the second time is softening 410-430 ℃ of following vacuum annealing, be incubated 2 hours, cooled off 12 hours; Then carrying out 4 road skies, to be pulled to external diameter be that φ 11mm, internal diameter are φ 2.65mm, and the copper pipe after 4 road skies are drawn serves as a contrast for the third time and is pulled to external diameter is that φ 10.50mm, internal diameter are φ 2.50mm; To select sizing length H shown in the drawings at last for use be 0.5～0.9mm, go into chamber angle R is that to be pulled to external diameter be that φ 6.0mm, internal diameter are φ 1.2 ± 0.05mm for 15～22 ° mould combination carrying out 3 road skies.
Embodiment 2:
Trimmed size: the chromium-zirconium-copper tubes external diameter is that φ 10.0mm, internal diameter are φ 1.8 ± 0.05mm
With external diameter is that φ 40mm, wall thickness are that the hard attitude chromium-zirconium-copper tubes base of 10mm carries out first time lining and draws correction, and carrying out 4 road skies then, to be pulled to external diameter be that φ 26.0mm, internal diameter are φ 11.5mm; Carrying out second time lining again, to be pulled to external diameter be that φ 25mm, internal diameter are φ 10.1mm; Copper pipe after lining draws for the second time is softening 530-570 ℃ of following vacuum annealing, be incubated 2 hours, cooled off 15 hours; Then carrying out 3 road skies, to be pulled to external diameter be that φ 15mm, internal diameter are φ 3.85mm, and the copper pipe after 3 road skies are drawn serves as a contrast for the third time and is pulled to external diameter is that φ 14.5mm, internal diameter are φ 3.7mm; To select the length of sizing shown in accompanying drawing H at last for use be 0.8～1.5mm, go into chamber angle R is that to be pulled to external diameter be that φ 10.0mm, internal diameter are φ 1.8 ± 0.05mm for 21～26.5 ° mould combination carrying out 3 road skies.
Embodiment 3:
Trimmed size: profile is that 7.92*7.62mm, internal diameter are φ 1.2 ± 0.05mm for oval chromium-zirconium-copper tubes external diameter
With external diameter is that φ 38mm, wall thickness are that the hard attitude chromium-zirconium-copper tubes base of 8mm carries out first time lining and draws, and carrying out 5 road skies then, to be pulled to external diameter be that φ 21.0mm, internal diameter are φ 9.5mm; Carrying out second time lining again, to be pulled to external diameter be that φ 20mm, internal diameter are φ 8.45mm; Copper pipe after lining draws for the second time is softening 460-480 ℃ of following vacuum annealing, be incubated 2 hours, cooled off 13 hours; Then carrying out 3 road skies, to be pulled to external diameter be that φ 13mm, internal diameter are φ 3.05mm, and the copper pipe after 3 road skies are drawn serves as a contrast for the third time and is pulled to external diameter is that φ 12.3mm, internal diameter are φ 2.8mm; To select the length of sizing shown in accompanying drawing H at last for use be 0.6～1.3mm, go into angle, chamber R be 14～20 ° mould combination carrying out 3 road skies to be pulled to external diameter be that 7.92*7.62mm, internal diameter are φ 1.20 ± 0.05mm, wherein external diameter is that 7.92*7.62mm is that the expression transverse is that 7.92mm, minor axis are 7.62mm.
Embodiment 4:
Trimmed size: the chromium-zirconium-copper tubes profile is that φ 12mm, internal diameter are φ 2.20 ± 0.05mm
With external diameter is that φ 40mm, wall thickness are that the hard attitude chromium-zirconium-copper tubes base of 7.9mm carries out first time lining and draws, and carrying out 6 road skies then, to be pulled to external diameter be that φ 20.0mm, internal diameter are φ 8.05mm; Carrying out second time lining again, to be pulled to external diameter be that φ 19.3mm, internal diameter are φ 7.9mm; Copper pipe after lining draws for the second time is softening 500-530 ℃ of following vacuum annealing, be incubated 2 hours, cooled off 14 hours; Then carrying out 5 road skies, to be pulled to external diameter be that φ 13mm, internal diameter are φ 3.16mm, and the copper pipe after 5 road skies are drawn serves as a contrast for the third time and is pulled to external diameter is that φ 11.3mm, internal diameter are φ 2.8mm; To select the length of sizing shown in accompanying drawing H at last for use be 0.6～1.3mm, go into angle, chamber R is that 14～20 ° Chinese style wolfram steel die combination is carried out 2 road skies to be pulled to external diameter be that φ 12.0mm, internal diameter are φ 2.20 ± 0.05mm.
Embodiment 5:
Trimmed size: profile is that orthohexagonal chromium-zirconium-copper tubes outer diameter side eight, internal diameter are φ 1.80 ± 0.05mm
With external diameter is that φ 38mm, wall thickness are that the hard attitude chromium-zirconium-copper tubes base of 7.0mm carries out first time lining and draws, and carrying out 6 road skies then, to be pulled to external diameter be that φ 22.0mm, internal diameter are φ 9.65mm; Carrying out second time lining again, to be pulled to external diameter be that φ 21mm, internal diameter are φ 8.9mm; Copper pipe after lining draws for the second time the softening insulation of 500-530 ℃ of following vacuum annealing 2 hours, was cooled off 15 hours; Then carrying out 5 road skies, to be pulled to external diameter be that φ 13mm, internal diameter are φ 2.95mm, and the copper pipe after 5 road skies are drawn serves as a contrast for the third time and is pulled to external diameter is that φ 12.5mm, internal diameter are φ 2.75mm; To select the length of sizing shown in accompanying drawing H at last for use be 0.7～1.2mm, go into chamber angle R is that 15.4～22.5 ° Chinese style wolfram steel die combination is carried out 2 road skies to be pulled to external diameter be that limit eight, internal diameter are φ 1.80 ± 0.05mm, and wherein limit eight is meant that regular hexagon two parallel plane spacings are 8mm.
Claims (2)
1, a kind of manufacture method of chromium-zirconium-copper tubes for electrode material is characterized in that, the step of this method is as follows:
(1) be that φ 38～40mm, wall thickness are that the hard attitude chromium-zirconium-copper tubes base of 5～10mm carries out first time lining and draws with external diameter, so that pipe is revised;
(2) revised pipe being carried out 4～6 road skies, to be pulled to external diameter be that φ 18.85～26mm, internal diameter are φ 8.05～11.5mm;
(3) pipe after drawing and then to sky carries out second time lining and draws that to revise to external diameter be that φ 18.1～25mm, internal diameter are φ 7.75～10.1mm;
(4) pipe after lining draws for the second time is 410～570 ℃ of following vacuum annealings, and insulation is cooled off;
(5) cooled pipe being carried out 3～5 road skies, to be pulled to external diameter be that φ 11～15mm, internal diameter are φ 2.65～3.85mm;
(6) serve as a contrast for the third time that to be pulled to external diameter be that φ 10.50～14.50mm, internal diameter are φ 2.50～3.70mm, to revise the endoporus deviation;
(7) will serve as a contrast for the third time after drawing pipe through sizing length be 0.5～1.5mm, to go into the chamber angle be that 14 °～26.5 ° mould carries out 2～3 road skies to be pulled to external diameter be that φ 6～12mm, internal diameter are φ 0.80～2.20mm, internal diameter deviation ± 0.05mm promptly obtains described chromium-zirconium-copper tubes for electrode material.
2, the manufacture method of a kind of chromium-zirconium-copper tubes for electrode material according to claim 1 is characterized in that: described mould is a Chinese style wolfram steel mould.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2009100331291A CN101579697A (en) | 2009-06-08 | 2009-06-08 | Method for manufacturing chromium-zirconium-copper tubes for electrode material |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2009100331291A CN101579697A (en) | 2009-06-08 | 2009-06-08 | Method for manufacturing chromium-zirconium-copper tubes for electrode material |
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| CN101579697A true CN101579697A (en) | 2009-11-18 |
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| CNA2009100331291A Pending CN101579697A (en) | 2009-06-08 | 2009-06-08 | Method for manufacturing chromium-zirconium-copper tubes for electrode material |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107931349A (en) * | 2017-12-14 | 2018-04-20 | 上海龙阳精密复合铜管有限公司 | A kind of special-shaped plug die of new internal thread forming machine |
| CN109201769A (en) * | 2018-09-13 | 2019-01-15 | 河北欧通有色金属制品有限公司 | A kind of processing method and chromium-zirconium-copper microporous pipe of chromium-zirconium-copper microporous pipe |
-
2009
- 2009-06-08 CN CNA2009100331291A patent/CN101579697A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107931349A (en) * | 2017-12-14 | 2018-04-20 | 上海龙阳精密复合铜管有限公司 | A kind of special-shaped plug die of new internal thread forming machine |
| CN109201769A (en) * | 2018-09-13 | 2019-01-15 | 河北欧通有色金属制品有限公司 | A kind of processing method and chromium-zirconium-copper microporous pipe of chromium-zirconium-copper microporous pipe |
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Open date: 20091118 |