CN104138925B - A kind of preparation method of copper/phosphorus bimetallic capillary tube - Google Patents
A kind of preparation method of copper/phosphorus bimetallic capillary tube Download PDFInfo
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- CN104138925B CN104138925B CN201410272511.9A CN201410272511A CN104138925B CN 104138925 B CN104138925 B CN 104138925B CN 201410272511 A CN201410272511 A CN 201410272511A CN 104138925 B CN104138925 B CN 104138925B
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Abstract
The invention belongs to metal composite capillary tubes preparing technical field, relate to the preparation method of a kind of copper/phosphorus bimetallic capillary tube.The method is to utilize to swage to realize combining closely of copper pipe and phosphorus pipe, processes to reach the copper/phosphorus multiple tube of metallurgical binding state to interface by high temperature diffusion annealing；Then use tube drawing with floating plug or/and empty drawing is processed, and combine intermediate annealing, obtain high-performance copper/phosphorus bimetallic capillary tube.The present invention uses the method that tube drawing with floating plug and empty drawing combine, and is equipped with the intermediate annealing of necessity, and the composite capillary dimensional accuracy obtained is high, surface quality is good.Drawing processing after diffusion annealing, shapes required deformation force little, instrument, height die life, and the driving force needed for equipment is little, and production cost is low.
Description
Technical field:
The present invention relates to metal composite capillary tubes preparing technical field, in particular, provide one and can be used for copper/phosphorus bimetallic capillary
The production method of pipe.
Technical background:
Copper and copper alloy capillary tube be specification limit be Φ (1.5～6.1) mm × (0.1～0.8) mm (external diameter × wall thickness, under
The tubing that class diameter is less, wall thickness is relatively thin together), is extensively should in central air-conditioning, modern household electrical equipment, instrument, instrument
Important raw and processed materials.Being characterized in that difficulty of processing is big, added value is high.Along with China's equipment manufacture, electrical appliance industry and ocean
Developing rapidly of industry, the market demand of copper and copper alloy capillary tube is increasing.But, on naval vessel, desalinization and strand
The sea water strong corrosive environment places such as power station, copper and copper alloy capillary tube can because of seawater corrosion reduction of service life, lowering apparatus
Reliability.Pure phosphorus capillary tube has the most excellent decay resistance, but the thermal conductivity of phosphorus is relatively low, the heat exchange of thick-walled capillary
Poor-performing, the mechanical property of thin-walled capillary pipe is difficult to again meet use requirement.
At present the preparation method of copper/phosphorus multiple tube mainly has: vertical pulling is compound, hydraulic expanding-forming is compound and the method such as explosive welding, generally
It is all to be produced a small amount of plastic deformation by base material or base, clad material to realize being combined obtaining interference fit, prepares
Multiple tube interface bond strength low, double-level-metal compatibility of deformation is poor, it is difficult to make capillary tube, especially phosphorous layer uneven thickness
Even, it is difficult to ensure that the thickness requirement of phosphorous layer after making capillary tube.
Summary of the invention:
For solving the problem that above-mentioned technique exists, it is an object of the invention to provide cold the swaging of a kind of employing and combine diffusion annealing and vertical pulling
The method of copper/phosphorus bimetallic capillary tube is prepared in shaping.The method is to utilize to swage to realize the combining closely, by height of copper pipe and phosphorus pipe
Temperature diffusion annealing processes to reach the copper/phosphorus multiple tube of metallurgical binding state to interface；Then floating core head vertical pulling is used or/and sky is straight
Draw processing, and combine intermediate annealing, obtain high-performance copper/phosphorus bimetallic capillary tube.
In order to achieve the above object, the technical scheme is that the employing cold method swaged of multi-pass prepares a size of Φ (9.0～15.0)
Copper/phosphorus the multiple tube of mm × (1.5～2.0) mm, then under the conditions of 900～950 DEG C and inert gas shielding diffusion annealing 10～
60min；Tubing after annealing directly carries out the vertical pulling processing of multi-pass, in conjunction with intermediate annealing, it is thus achieved that a size of Φ (1.5～6.1)
Copper/phosphorus bimetallic the capillary tube of mm × (0.1～0.8) mm.Wherein, described copper/phosphorus include the internal layer using copper as multiple tube or
The situation of outer layer, and described copper-clad includes fine copper and wrought copper alloy, phosphorus includes pure phosphorus and deformation phosphorus alloy；Described multi-pass vertical pulling
Vertical pulling or dish can be used to draw, including floating core head vertical pulling or/and empty vertical pulling；Vertical pulling passage section shrinkage rate 10%～40% it
Between；When vertical pulling accumulation section shrinkage rate reaches about 70%, an intermediate annealing need to be carried out；Described intermediate annealing process is annealing
Temperature 500～600 DEG C, annealing time 1.5～1.0 hours；Applying lubrication in straight pulling process, lubricating oil can use mineral oil or plant
Thing oil；Vertical pulling speed is 1～20mm/min；Described noble gas can be nitrogen or argon.
The present invention specifically comprises the following steps that
Step 1: using minor diameter copper/phosphorus multiple tube that cold preparation of swaging reaches to combine closely, technique is: phosphorus pipe is inserted in copper pipe
In, carry out, after inserting the plug coating mineral oil, the cold shaping of swaging that multi-pass section shrinkage rate is about 20%, prepare a size of
Copper/phosphorus the multiple tube of Φ (9.0～15.0) mm × (1.5～2.0) mm；
Step 2: the cold copper/phosphorus multiple tube swaging preparation is carried out high temperature diffusion annealing, to realize layers of copper and the metallurgy at phosphorous layer interface
In conjunction with.Diffusion annealing system is: heating-up temperature is 900～950 DEG C, and temperature retention time is 10～60min, and is passed through noble gas
It is protected from oxidation；
Step 3: the multiple tube after DIFFUSION TREATMENT carries out the floating core head vertical pulling of multi-pass again, makes multiple tube size reach
External diameter Φ 6.1mm, below wall thickness 0.825mm；Wherein, the passage section shrinkage rate of vertical pulling between 10%～40%, vertical pulling
When accumulation section shrinkage rate reaches about 70%, an intermediate annealing need to be carried out；
Step 4: when tube outer diameter is less than Φ 2.0mm, use multi-pass sky vertical pulling, vertical pulling passage section shrinkage rate 10%～
Between 40%, when vertical pulling accumulation section shrinkage rate reaches about 70%, an intermediate annealing need to be carried out and be further continued for vertical pulling, finally obtain
Obtain the copper/phosphorus bimetallic capillary tube of a size of Φ (1.5～2.0) mm × (0.1～1.5) mm.
Present invention have the advantage that
1, the present invention uses cold preparation small size copper/phosphorus multiple tube of swaging, vertical pulling processing after diffusion annealing, shapes required deformation
Power is little, instrument, height die life, and the driving force needed for equipment is little, and production cost is low.
2, the present invention utilizes the multiple tube interface laminating of cold preparation of swaging closely, and under the conditions of suitable high temperature diffusion annealing, interface can
Reaching metallurgical binding, follow-up vertical pulling shapes, and obtains high performance copper/phosphorus bimetallic capillary tube.
3, the present invention uses the method that floating core head vertical pulling and empty vertical pulling combine, and is equipped with the intermediate annealing of necessity, is more beneficial for copper
Layer and the deformation processing of phosphorous layer, the composite capillary dimensional accuracy obtained is high, surface quality is good.
Detailed description of the invention:
Below in conjunction with embodiment, the invention will be further described.
Embodiment 1: the copper of a size of Φ 3.0mm × 1.5mm/phosphorus bimetallic processing method of capillary tube.
TA2 pure phosphorus pipe by a size of Φ 12.7mm × 1.55mm is inserted in the T2 copper tube of a size of Φ 19.0mm × 2.0mm
In, insert that to carry out 3 passage section shrinkage rates after coating the plug of mineral oil be about 20% cold swage, prepare a size of Φ
The copper of 14.1mm × 1.3mm/phosphorus multiple tube.The diffusion annealing that multiple tube carries out under argon shield 950 DEG C of 10min processes,
Interface is made to form metallurgical binding.Multiple tube after DIFFUSION TREATMENT obtains Φ 7.2mm × 0.7mm through the floating core head vertical pulling of 5 passages
Multiple tube, after carrying out the annealing of 500 DEG C of 1h, continue floating core head vertical pulling 5 passage obtain Φ 3.0mm × 1.5mm's
Copper/phosphorus bimetallic capillary tube.Vertical pulling passage section shrinkage rate, between 10%～40%, uses mineral oil to be lubricated.
Embodiment 2: the copper of a size of Φ 2.0mm × 0.4mm/phosphorus alloy bimetallic processing method of capillary tube.
The phosphorus alloy pipe of a size of Φ 12.0mm × 1.5mm is inserted in the T2 copper tube of a size of Φ 15.0mm × 1.4mm,
Insert and carry out 4 passage section shrinkage rates after coating the plug of mineral oil about 20% cold swage, prepare a size of Φ 11.0mm
The copper of × 1.0mm/phosphorus alloy multiple tube.The diffusion annealing that multiple tube carries out under argon shield 920 DEG C of 30min processes, and makes
Interface forms metallurgical binding.Multiple tube after DIFFUSION TREATMENT obtains Φ 5.5mm × 1.5mm's through the floating core head vertical pulling of 5 passages
Multiple tube, after carrying out the annealing annealing of 500 DEG C of 1h again through 5 passage floating core head vertical pullings become the copper of Φ 2mm × 0.4mm/
Phosphorus alloy bimetallic capillary tube.Vertical pulling passage section shrinkage rate, between 10%～40%, uses mineral oil to be lubricated.
Embodiment 3: the copper of a size of Φ 1.5mm × 0.1mm/phosphorus bimetallic processing method of capillary tube.
The TA2 pure phosphorus pipe of a size of Φ 8.0mm × 0.4mm is inserted in the T2 copper tube of a size of Φ 10.0mm × 0.9mm,
Insert and carry out 5 passage section shrinkage rates after coating the plug of mineral oil about 20% cold swage, prepare a size of Φ 9.0mm
The copper of × 0.6mm/phosphorus multiple tube.The diffusion annealing that multiple tube carries out under argon shield 900 DEG C of 60min processes, and makes interface
Form metallurgical binding.Multiple tube after DIFFUSION TREATMENT obtains the compound of Φ 4.0mm × 0.3mm through the floating core head vertical pulling of 4 passages
Pipe；After carrying out the annealing of 500 DEG C of 1h, obtain the multiple tube of Φ 2.0mm × 0.15mm through the floating core head vertical pulling of 5 passages；
After carrying out the annealing of 500 DEG C of 1h, then become the copper/phosphorus bimetallic capillary tube (phase of Φ 1.5mm × 0.1mm through 7 passage sky vertical pullings
Between need to carry out the intermediate annealing of 500 DEG C of 1h).Vertical pulling passage section shrinkage rate, between 10%～40%, uses mineral oil to enter
Row lubrication.
Claims (2)
1. the preparation method of copper/phosphorus bimetallic capillary tube, it is characterised in that specifically comprise the following steps that
Step 1: using minor diameter copper/phosphorus multiple tube that cold preparation of swaging reaches to combine closely, technique is: be inserted in copper pipe by phosphorus pipe,
Insert and carry out, after coating the plug of mineral oil, cold shapings of swaging that multi-pass section shrinkage rate is 20%, prepared a size of Φ (9.0～
15.0) copper/phosphorus multiple tube of mm × (1.5～2.0) mm；
Step 2: the cold copper/phosphorus multiple tube swaging preparation is carried out high temperature diffusion annealing, to realize layers of copper and the metallurgical binding at phosphorous layer interface；
Diffusion annealing system is: heating-up temperature is 900～950 DEG C, and temperature retention time is 10～60min, and it is anti-to be passed through inert gas shielding
Oxidation；
Step 3: the composite pipe after DIFFUSION TREATMENT is carried out again the floating core head vertical pulling of multi-pass, vertical pulling passage section shrinkage rate
Between 10%～40%；Multiple tube size is made to reach external diameter Φ 6.1mm, below wall thickness 0.825mm；Wherein, the road of vertical pulling
Secondary section shrinkage rate is between 10%～40%, when vertical pulling accumulation section shrinkage rate reaches 70%, will carry out an intermediate annealing,
Annealing temperature 500～600 DEG C, annealing time 1.5～1.0 hours；
Step 4: when tube outer diameter is less than Φ 2.0mm, using multi-pass sky vertical pulling, vertical pulling passage section shrinkage rate is 10%～40%
Between, when vertical pulling accumulation section shrinkage rate reaches 70%, an intermediate annealing need to be carried out and be further continued for vertical pulling, final acquisition is a size of
Copper/phosphorus bimetallic the capillary tube of Φ (1.5～2.0) mm × (0.1～1.5) mm.
The preparation method of a kind of copper/phosphorus bimetallic capillary tube, it is characterised in that to apply profit in straight pulling process
Sliding, lubricating oil uses mineral oil or vegetable oil；Vertical pulling speed is 1～20mm/min；Described noble gas is nitrogen or argon.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| DE4105701A1 (en) * | 1990-03-08 | 1991-09-12 | Mannesmann Ag | METHOD FOR PRODUCING A METAL, THICK-WALLED HIGH-PRESSURE PIPE |
| CA2303732C (en) * | 1999-04-09 | 2010-05-25 | Daido Tokushuko Kabushiki Kaisha | Multi-layered anti-coking heat resisting metal tube and the method for manufacturing thereof |
| CN1331622C (en) * | 2004-04-30 | 2007-08-15 | 上海瓦恩德特种金属材料有限公司 | Composite stainless steel wire and its manufacturing process |
| CN101745577B (en) * | 2008-12-17 | 2012-06-20 | 北京有色金属研究总院 | Spinning processing method of carbon steel lining stainless steel composite pipe |
| CN102527768A (en) * | 2010-12-08 | 2012-07-04 | 江苏兴荣高新科技股份有限公司 | Manufacturing method of copper-clad aluminum pipe |
| CN102553961B (en) * | 2010-12-14 | 2014-05-14 | 张皓 | Compound pipe manufacturing technology for metallurgically bonding anti-corrosion special alloy lining with pipeline steel outer sleeve |
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Effective date of registration: 20160922 Address after: 266000 Shandong Province, Licang District, No. nine East Road, No. 320, building 205, room 2 Applicant after: Qingdao Shenda multi-creation Technology Service Co. Ltd. Address before: 545000, room 89, No. 702, Lane West, Third Middle Road, North willow District, the Guangxi Zhuang Autonomous Region, Liuzhou Applicant before: Xie Guangyu |
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Effective date of registration: 20201116 Address after: 277000 west side of Fazhan Road, neixi District, Xuecheng District, Zaozhuang City, Shandong Province Patentee after: Zaozhuang Mingshi New Material Co., Ltd Address before: 266000 Shandong Province, Licang District, No. nine East Road, No. 320, building 205, room 2 Patentee before: QINGDAO SHENDAZHONGCHUANG TECHNICAL SERVICES Co.,Ltd. |