CN106269984A - The manufacture method of square-outside and round-inside copper pipe - Google Patents
The manufacture method of square-outside and round-inside copper pipe Download PDFInfo
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- CN106269984A CN106269984A CN201510340094.1A CN201510340094A CN106269984A CN 106269984 A CN106269984 A CN 106269984A CN 201510340094 A CN201510340094 A CN 201510340094A CN 106269984 A CN106269984 A CN 106269984A
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Abstract
The present invention relates to the manufacture method of a kind of square-outside and round-inside copper pipe, belong to technical field of nonferrous metal processing.Comprise the steps: that (1) passes through vacuum casting furnace founding as copper ingot with Cu-CATH-1 for raw material；(2) continuously extruded unit is used to be processed the copper ingot in step (1) forming square-outside and round-inside copper pipe base；(3) the square-outside and round-inside copper pipe base formed step (2) by high accuracy stretching-machine is stretched；(4) square-outside and round-inside copper pipe after stretching step (3) with protective gas annealing device is annealed；(5) square-outside and round-inside copper pipe after annealing step (4) is tested, packaging.The present invention, compared with traditional production technology, reduces energy consumption, shortens production procedure, saves the energy of more than 50%；Every batch square-outside and round-inside copper pipe can reach more than 3 tons, it is achieved long length produces, and the lumber recovery of product reaches more than 90% and purity is high, oxygen content is low and conductivity is high, and surface quality is excellent.
Description
Technical field
The present invention relates to the manufacture method of a kind of square-outside and round-inside copper pipe, belong to non-ferrous metals processing skill
Art field.
Background technology
Square-outside and round-inside copper pipe has that conductive section is big, the unit interval is many by cooling medium consumption,
The feature of perfect heat-dissipating, is that atomic energy industry and electric machine industry are for manufacturing various motor and adding
The critical material of speed device, square-outside and round-inside copper pipe typically processes with following Conventional processing methods:
Ingot casting one extruded tube one stretches an annealing, and traditional square-outside and round-inside copper pipe production technology exists investment
The shortcomings such as scale is big, lumber recovery is low, product length is limited, energy consumption is big.
Summary of the invention
The present invention provides the manufacture method of a kind of square-outside and round-inside copper pipe, outside can being realized by the method
Side's round-inside copper pipe reduces energy consumption, shortens flow process when producing, be effectively improved production efficiency, improve and produce
Quality, its technical scheme is described below:
It is an object of the invention to provide the manufacture method of a kind of square-outside and round-inside copper pipe, including as follows
Step:
(1) first melt at a temperature of 1150 DEG C ± 10 DEG C with Cu-CATH-1 for raw material,
Insulation, uses copper liquid refining techniques, utilizes online degasification device for deoxidizing, copper liquid under vacuum state
Inside it is filled with noble gas, and utilizes agitating device, reach degasification, deoxidation, high-purity effect,
Crystallizer hydraulic pressure 0.2～0.4MPa, crystallizer leaving water temperature 35 DEG C～50 DEG C, copper ingot
Cu+Ag >=99.95%, in vacuum casting furnace, founding is copper ingot；
(2) send in the extruding race of continuously extruded unit after copper ingot being aligned, extruding
Wheel speed is 47 revs/min, is continuously fed into extrusion chamber under the effect of frictional force, and blank exists
Circumferentially move before cavity material blocking block, through fricting shearing deformed area, Upsetting district, viscous
District, right-angle bending crush zone, finally enter cavity and extrude square-outside and round-inside oxygen-free copper by mould
Pipe, blank extruded velocity 5～10 ms/min, in extrusion process, the temperature of copper reaches
500 DEG C～750 DEG C, cavity internal pressure reaches 1000～1200MPa, uses vacuum water-cooled
Device, makes blank cool down after high temperature is extruded, and ensures square-outside and round-inside copper pipe in whole deformation process
Profile, and improve its electric conductivity；
(3) the square-outside and round-inside copper pipe base formed step (2) by high accuracy stretching-machine is carried out
Stretching, the drawing coefficient of stretching-machine is in high precision: 1.5～1.7；
(4) the inner circle foreign side copper pipe after stretching step (3) with protective gas is annealed,
Annealing temperature 300 DEG C～400 DEG C, annealing time 26 hours；
(5) square-outside and round-inside copper pipe after annealing step (4) is tested, packaging.
In described step (1), Cu-CATH-1 uses a tough cathode of national Specification,
Copper content is not less than 99.99%.
Vacuum state in described step (1) is by using wood carbon and graphite phosphorus sheet to cover
Realize vacuum during fusing.
Noble gas in described step (1) uses argon or nitrogen, uses graphite shaft and turns
Argon or nitrogen, as agitating device, are pressed in copper liquid and are dispersed as micro-bubble by son so that it is
It is dispersed in copper liquid, source outlet pressure 0.5MPa, flow 1.5Nm3/H.
The invention have the benefit that 1. low energy consumption, short route；Employing continual extruding technology is raw
Produce square-outside and round-inside copper pipe, compared with traditional production technology, reduce energy consumption, shorten production
Flow process, saves the energy of more than 50%；2. production efficiency is high, lumber recovery is high；Use and squeeze continuously
Pressure technology produces square-outside and round-inside copper pipe, can reach continuous prodution, each square-outside and round-inside copper pipe
Can reach more than 3 tons, it is achieved long length produces, continual extruding technology produces square-outside and round-inside copper
Pipe, it is to avoid in traditional processing technology, every copper pipe is required for carrying out crop, back-end crop, product
Lumber recovery reaches more than 90%；3. product quality is excellent, the purity of product is high, oxygen content is low and
Conductivity is high, and surface quality is excellent, Cu+Ag >=99.95%, conductivity >=101%IACS.
Detailed description of the invention
Below in conjunction with embodiment, the present invention is conducted further description.
Embodiment is as follows:
The present invention comprises the steps:
(1) with a tough cathode of national Specification, the copper content height not less than 99.99%
Pure tough cathode is that raw material first melts at a temperature of 1150 DEG C, is incubated, by wood carbon and graphite phosphorus
Sheet covers vacuum when realizing fusing, uses copper liquid refining techniques under vacuum conditions, utilizes
Online degasification device for deoxidizing, is filled with noble gas in copper liquid, such as argon or nitrogen, uses graphite
Argon or nitrogen, as agitating device, are pressed in copper liquid and are dispersed as small gas by axle and rotor
Bubble so that it is be dispersed in copper liquid, source outlet pressure 0.5MPa, flow 1.5Nm3/H,
Degasification, deoxidation, high-purity effect, crystallizer hydraulic pressure 0.2MPa, crystallizer is reached with this
Leaving water temperature 35 DEG C, in vacuum casting furnace, founding is copper ingot, Cu+Ag >=99. in copper ingot
95%；
(2) continuously extruded unit is used to be processed the copper ingot in step (1) forming foreign side
Round-inside copper pipe base, sends in the extruding race of continuously extruded unit after being aligned by copper ingot, squeeze
Pinch roller rotating speed is 47 revs/min, is continuously fed into extrusion chamber, blank under the effect of frictional force
Circumferentially move before cavity material blocking block, through fricting shearing deformed area, Upsetting district,
Adhesioin zone, right-angle bending crush zone, finally enter cavity and extrude square-outside and round-inside anaerobic by mould
Copper tube billet；Blank extruded velocity 5 ms/min；In extrusion process, the temperature of copper reaches 500
DEG C, cavity internal pressure reaches 1000Mpa；Use vacuum water device for cooling, make blank at high warm extrusion
Cool down after going out, by being cooled in whole deformation process ensureing square-outside and round-inside copper pipe profile, raising
Electric conductivity；Continual extruding technology is used to produce square-outside and round-inside copper pipe, with traditional production technology
Compare, reduce energy consumption, shorten production procedure, save the energy of more than 50%, and can
With continuous prodution, every batch square-outside and round-inside copper pipe can reach more than 3 tons, it is achieved long length
Producing, continual extruding technology produces square-outside and round-inside copper pipe, it is to avoid in traditional processing technology every
Copper pipe is required for carrying out crop, back-end crop, and the lumber recovery of product reaches more than 90%；
(3) the square-outside and round-inside copper pipe base formed step (2) by high accuracy stretching-machine is carried out
Stretching, the drawing coefficient of stretching-machine is 1.5 in high precision；
(4) the inner circle foreign side copper pipe after stretching step (3) with protective gas is annealed,
Annealing temperature 300 DEG C, annealing time 26h；Excellent by the product quality obtained by above step
Different, the purity of product is high, oxygen content is low and conductivity is high, and surface quality is excellent, and foreign side
Cu+Ag >=99.95% in round-inside copper pipe, conductivity >=101%IACS；
(5) square-outside and round-inside copper pipe after annealing step (4) is tested, packaging.
Claims (2)
1. it is an object of the invention to provide the manufacture method of a kind of square-outside and round-inside copper pipe, it is characterised in that:
Comprise the steps:
(1) first melt at a temperature of 1150 DEG C ± 10 DEG C with Cu-CATH-1 for raw material, be incubated, vacuum
Use copper liquid refining techniques under state, utilize online degasification device for deoxidizing, in copper liquid, be filled with noble gas, and
Utilize agitating device, reach degasification, deoxidation, high-purity effect, crystallizer hydraulic pressure 0.2～0.4MPa, knot
Brilliant device leaving water temperature 35 DEG C～50 DEG C, copper ingot Cu+Ag >=99.95%, in vacuum casting furnace, founding is
Copper ingot；
(2) sending in the extruding race of continuously extruded unit after being aligned by copper ingot, extrusion wheel velocity is 4
7 revs/min, being continuously fed into extrusion chamber under the effect of frictional force, blank is edge circle before cavity material blocking block
Zhou Yundong, through fricting shearing deformed area, Upsetting district, adhesioin zone, right-angle bending crush zone, finally
Enter cavity by mould extrude square-outside and round-inside oxygen-free copper pipe, blank extruded velocity 5～10 ms/min,
In extrusion process, the temperature of copper reaches 500 DEG C～750 DEG C, and cavity internal pressure reaches 1000～1200MPa,
Use vacuum water device for cooling, make blank cool down after high temperature is extruded, whole deformation process ensures square-outside and round-inside copper
Pipe profile, and improve its electric conductivity；
(3) the square-outside and round-inside copper pipe base formed step (2) by high accuracy stretching-machine is stretched, high
The drawing coefficient of precision drawing machine is: 1.5～1.7；
(4) square-outside and round-inside copper pipe after stretching step (3) with protective gas is annealed, annealing temperature
300 DEG C～400 DEG C, annealing time 26h；
(5) square-outside and round-inside copper pipe after annealing step (4) is tested, packaging.
2. the manufacture method of square-outside and round-inside copper pipe as claimed in claim 1, it is characterised in that: described step
(1) noble gas in uses argon or nitrogen, and employing graphite shaft and rotor are as agitating device, by argon
Or nitrogen is pressed in copper liquid and is dispersed as micro-bubble so that it is be dispersed in copper liquid, source outlet pressure
0.5MPa, flow 1.5Nm3/H.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510340094.1A CN106269984A (en) | 2015-06-12 | 2015-06-12 | The manufacture method of square-outside and round-inside copper pipe |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510340094.1A CN106269984A (en) | 2015-06-12 | 2015-06-12 | The manufacture method of square-outside and round-inside copper pipe |
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| CN106269984A true CN106269984A (en) | 2017-01-04 |
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ID=57650692
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510340094.1A Pending CN106269984A (en) | 2015-06-12 | 2015-06-12 | The manufacture method of square-outside and round-inside copper pipe |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1103612A (en) * | 1993-12-11 | 1995-06-14 | 山东烟台铜材厂 | Drawing-continuous casting-stretch process for producing oxygen-free copper pipe |
| CN102581060A (en) * | 2012-02-20 | 2012-07-18 | 绍兴市力博电气有限公司 | Method for processing copper tube having circular inside and quadrate outside |
| CN102581061A (en) * | 2012-03-09 | 2012-07-18 | 泉州中宇卫浴科技实业有限公司 | Production method for seamless brass pipe |
| CN102806244A (en) * | 2011-06-02 | 2012-12-05 | 高玉树 | Process for producing copper tubes by refining,continuous casting, continuous rolling and stretching of waste copper |
| KR20140023476A (en) * | 2012-08-16 | 2014-02-27 | 주식회사 풍산 | High strength copper alloy pipe with good workability and manufacturing method thereof |
| CN103752642A (en) * | 2013-12-23 | 2014-04-30 | 青岛润鑫伟业科贸有限公司 | Machining method for thick-walled seamless red copper pipe |
-
2015
- 2015-06-12 CN CN201510340094.1A patent/CN106269984A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1103612A (en) * | 1993-12-11 | 1995-06-14 | 山东烟台铜材厂 | Drawing-continuous casting-stretch process for producing oxygen-free copper pipe |
| CN102806244A (en) * | 2011-06-02 | 2012-12-05 | 高玉树 | Process for producing copper tubes by refining,continuous casting, continuous rolling and stretching of waste copper |
| CN102581060A (en) * | 2012-02-20 | 2012-07-18 | 绍兴市力博电气有限公司 | Method for processing copper tube having circular inside and quadrate outside |
| CN102581061A (en) * | 2012-03-09 | 2012-07-18 | 泉州中宇卫浴科技实业有限公司 | Production method for seamless brass pipe |
| KR20140023476A (en) * | 2012-08-16 | 2014-02-27 | 주식회사 풍산 | High strength copper alloy pipe with good workability and manufacturing method thereof |
| CN103752642A (en) * | 2013-12-23 | 2014-04-30 | 青岛润鑫伟业科贸有限公司 | Machining method for thick-walled seamless red copper pipe |
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