CN1281348C - Producing method for precision superlong copper alloy pipe - Google Patents
Producing method for precision superlong copper alloy pipe Download PDFInfo
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- CN1281348C CN1281348C CN 200410010338 CN200410010338A CN1281348C CN 1281348 C CN1281348 C CN 1281348C CN 200410010338 CN200410010338 CN 200410010338 CN 200410010338 A CN200410010338 A CN 200410010338A CN 1281348 C CN1281348 C CN 1281348C
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- 229910000881 Cu alloy Inorganic materials 0.000 title claims abstract description 16
- 238000005096 rolling process Methods 0.000 claims abstract description 26
- 238000004519 manufacturing process Methods 0.000 claims abstract description 16
- 238000000137 annealing Methods 0.000 claims abstract description 9
- 239000012535 impurity Substances 0.000 claims abstract description 7
- 238000007689 inspection Methods 0.000 claims abstract description 7
- 239000000077 insect repellent Substances 0.000 claims abstract description 5
- 238000003754 machining Methods 0.000 claims description 7
- 206010015856 Extrasystoles Diseases 0.000 claims description 5
- 238000005266 casting Methods 0.000 claims description 4
- 238000010792 warming Methods 0.000 claims description 4
- 238000009785 tube rolling Methods 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 4
- 238000009749 continuous casting Methods 0.000 abstract description 2
- 238000005516 engineering process Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 230000001681 protective Effects 0.000 description 4
- 238000001816 cooling Methods 0.000 description 3
- 238000001953 recrystallisation Methods 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N copper Chemical compound 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[Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 2
- 238000011031 large scale production Methods 0.000 description 2
- 238000003801 milling Methods 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 238000005275 alloying Methods 0.000 description 1
- 238000005097 cold rolling Methods 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 239000000839 emulsion Substances 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 230000000930 thermomechanical Effects 0.000 description 1
- 210000001519 tissues Anatomy 0.000 description 1
Abstract
The present invention discloses a producing method for a precision over-long copper alloy tube, which comprises the process that the machine work and the impurity removing are carried out on the surface of a horizontal continuous casting copper alloy tube blank. The present invention is characterized in that the tube blank of which the surface needs machine work and impurity removing is guided into rolling equipment; the heat energy of generation of tube blank depending on small deformation is heated up to 380 to 500 DEGC from the normal temperature by adopting the method of differential temperature screw rolling, and the roll forming of the tube blank is carried out when the temperature of the tube blank is rapidly heated up to the range of 720 to 880 DEG by enlarging the amount of deformation; the tube blank is fabricated into a rolled tube when the tube blank is quickly cooled below 50 DEG under the condition of oxygenfree environment, and the rolled tube can be stretched into the trimmed size by adopting a bigeminal pull and a high-speed disc drawing device via multiple stretching; finally the rolled tube is fabricated into a coiler, a straight tube or a mosquito-repellent incense coiler via on-line continuous annealing and eddy current inspection. The present invention adopts the method of differential temperature screw rolling; the present invention has the advantages of few manufacturing processes, easy control of temperature, high product precision, suitable mass production, difficult equipment damage during the production and low cost.
Description
Technical field:
The present invention relates to the manufacturing of metal pipe material, is a kind of manufacture method of accurate copper alloy tube specifically, is particularly suitable for the production of high accuracy overlength copper alloy condenser pipe.
Background technology:
The most of extrusion that adopts of the production of copper-alloy pipe-material both at home and abroad at present, minority adopts the drilling/rolling method.It is many to facts have proved that these two kinds of traditional preparation methods all exist operation, and lumber recovery is low, tubing manufacturing cost height, and the deficiency of product low precision, and be difficult to produce the tubing of overlength.Chinese patent application number is 02138022.8 and is called that " method of warm processing and manufacturing copper and copper alloy tube " and application number are 03149757.8 " method of planetary rolling machine manufactured copper and copper alloy tube ".Last application it comprise the pipe preheating, pipe is rolling and the rolled parts cooling step; it is characterized in that at first pipe being carried out Surface Machining; pipe is preheating to environment temperature between the recrystallization temperature; pipe is rolled with deformation speed more than recrystallization temperature; rolled parts cools off fast, and pipe preheating and the rolling step of pipe are carried out in protective atmosphere.It is to utilize preheat temperature and the pipe area reduction distortion institute heat that produces to superpose to make pipe to be rolled being higher than under 700 ℃ of temperature, substantially overcome the defective of cold rolling process, the rolling temperature that superposes is wayward rolls preceding preheating and rolls the operation that the back is incubated with having increased but brought simultaneously.Back one application is to utilize the planetary rolling machine that pipe is rolled; its first step is that machined is carried out on the pipe surface; remove the casting flaw on pipe surface; second step was under protective atmosphere the pipe after the first step processing to be imported the planetary rolling machine; make pipe under the temperature between 701-850 ℃ with single pass contraction percentage of area 85-95%, be rolled shaping with the mill speed of 12-30m/min, the 3rd step was that the rolling spare is cooled off fast by the emulsion bath.This is a most advanced copper alloy tube material processing method known today, it has overcome above-mentioned warm-rolling machine temperature substantially and has been elevated to 701-850 ℃ temperature range immediately, in operation, be difficult for realizing, can't avoid the impact of equipment such as gear simultaneously, influence equipment life.
Summary of the invention:
The purpose of this invention is to provide that a kind of manufacturing process is few, easy temperature control system, product precision height, be easy to large-scale production, and the manufacture method of easy damaged equipment, accurate overlong copper alloy pipe that cost is low not in producing.
Technical scheme of the present invention is finished as follows, it comprises carries out machining surface processing removal of impurities to horizontal casting copper alloy pipe, it is characterized in that: the pipe of machining surface being processed removal of impurities imports rolling equipment, adopt differential temperature to revolve rolling method and be rolled distortion, described differential temperature revolves the method for rolling: control pipe deflection is less than 20%, the heat energy that relies on self-deformation to produce makes pipe be warming up to 380-500 ℃, add subsequently and make the roll forming to the 720-880 ℃ of scope that is rapidly heated of pipe temperature more than the aximal deformation value to 80%, under oxygen-free environment, be quickly cooled to below 50 ℃ then and make tube rolling, then adopt bigeminy to draw and be drawn into trimmed size, make coil pipe by on-line continuous annealing and eddy current inspection at last through multi-pass with high speed disk stretcher, straight tube, or mosquito-repellent incense coil pipe.
The present invention is mainly based on utilization plastic working and thermomechanical treatment principle, adopting a kind of differential temperature to revolve the method for rolling makes pipe slowly be warming up to 380-580 ℃ by single pass heavy deformation less than the heat energy that 20% distortion produces from normal temperature, strengthen then pipe to be rapidly heated to be rolled and be shaped and cooling fast to 720-880 ℃, so not only reduced effectively and stung of the impact of people's stage equipment, and avoid 600-700 ℃ red brittleness district by being rapidly heated, improve the quality of product; For making intensification operation in two steps by adjusting roll structure and rolling parameter, the present invention is easier to operation and realizes temperature control; Adopt bigeminy to draw with high speed disk stretcher and be drawn into trimmed size through multi-pass, the centre need not be handled in soft annealing; Adopt continuous online annealing and eddy current inspection, precision can be controlled at below 0.05%.Copper alloy tube manufacture method of the present invention is to improve feasible preparation for processing now most, and product inspection shows that pipe range reaches more than 1000 meters, and dimensional accuracy is less than 0.05%.The body metallographic structure is the perfect recrystallization tissue of 0.01-0.2mm, and tensile strength is 360MPa, the result of detection reflection, and every km only is a 0-2 defect point.So the present invention has that manufacturing process is few, easy temperature control system, product precision height, be easy to large-scale production, not easy damaged equipment, advantage that cost is low in the production.
The specific embodiment:
Concrete implementation step of the present invention is as follows: the first step, preferentially adopt dynamic alloying adding apparatus and control technology, continuous casting electromagnetic technology to pull out the good hollow strand of even, the inside and outside apparent mass of composition; Second step, adopt machining process such as car or milling, control processing cutting depth makes the surface be non-oxidation light attitude by the casting billet surface machined in the 0.15-0.40mm scope.Because milling working (machining) efficiency is higher than Vehicle Processing, mill processing so preferably adopt, also can collect reuse immediately.In the 3rd step, the utilization differential temperature revolves the technology of rolling, and utilizes self-deformation heat to heat up through two steps under protective atmosphere and realizes roll forming obtaining tube rolling spare after the cooling fast.And preferentially adopting China Patent No. is that 02285366.9 pipe mill and China Patent No. are that 02237667.4 special roller and Chinese patent application number are 02123463.9 rolling plug.The rolling step of strand is; under protective atmosphere, the pipe after the surperficial removal of impurities is imported planetary rolling; make it to sting at normal temperatures the people; progressively add aximal deformation value in the contraction percentage of area in less than 20% scope; the heat that utilizes distortion to produce progressively is warming up to 380-500 ℃; strengthen single pass heavy deformation then and make the pipe temperature rise to roll forming in the 720-880 ℃ of scope fast, under oxygen-free environment, be cooled to rapidly immediately below 50 ℃, enter next step operation then after the rolling.This operation what deserves to be explained is that single pass heavy deformation reaches more than 80%, by adjusting the relevant parameter of rolling equipment and auxiliary facility, can roll out qualified products fully high success rate.And effectively reduce and sting the impact of people's stage to equipment, and avoid 600-700 ℃ of red brittleness district by being rapidly heated, the level of quality of goods is improved; In the 4th step, rolled pipe drawn through bigeminy be drawn into dimensional accuracy with high speed disk stretcher 2-15 passage and be controlled at high accuracy copper-alloy pipe-material below 0.05%; Adopt bigeminy to draw and the high speed disk stretches, the centre must annealing in process, directly multi-pass is carried out in rolled pipe and is drawn into required specification; The 5th step, adjust tubing soft or hard state by on-line continuous annealing, by eddy current inspection control tubing quality, utilize finishing, mosquito repellent coil disc or aligning, cutting equipment to make coil pipe, arm or mosquito-repellent incense coil pipe at last, the user is supplied with in the packing back.During concrete operations, can be adjusted to eddy current inspection+finishing one-tenth dish+roller-bottom type bright annealing or not need the annealing in process step according to the product state of supplying.
Claims (1)
1, a kind of manufacture method of accurate overlong copper alloy pipe, it comprises carries out machining surface processing removal of impurities to horizontal casting copper alloy pipe, it is characterized in that: the pipe of machining surface being processed removal of impurities imports rolling equipment, adopt differential temperature to revolve rolling method and be rolled distortion, described differential temperature revolves the method for rolling: control pipe deflection is less than 20%, the heat energy that relies on self-deformation to produce makes pipe be warming up to 380-500 ℃, add subsequently and make the roll forming to the 720-880 ℃ of scope that is rapidly heated of pipe temperature more than the aximal deformation value to 80%, under oxygen-free environment, be quickly cooled to below 50 ℃ then and make tube rolling, then adopt bigeminy to draw and be drawn into trimmed size, make coil pipe by on-line continuous annealing and eddy current inspection at last through multi-pass with high speed disk stretcher, straight tube, or mosquito-repellent incense coil pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410010338 CN1281348C (en) | 2004-06-15 | 2004-06-15 | Producing method for precision superlong copper alloy pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410010338 CN1281348C (en) | 2004-06-15 | 2004-06-15 | Producing method for precision superlong copper alloy pipe |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1583306A CN1583306A (en) | 2005-02-23 |
| CN1281348C true CN1281348C (en) | 2006-10-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200410010338 Active CN1281348C (en) | 2004-06-15 | 2004-06-15 | Producing method for precision superlong copper alloy pipe |
Country Status (1)
| Country | Link |
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| CN (1) | CN1281348C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101698207B (en) * | 2009-10-20 | 2011-07-20 | 无锡隆达金属材料有限公司 | Method for producing copper alloy coil pipe |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101704028B (en) * | 2009-10-26 | 2011-09-07 | 无锡隆达金属材料有限公司 | Online annealing triple successive drawing technology of copper alloy condenser pipe in power plant |
| CN101885008B (en) * | 2010-06-08 | 2012-04-25 | 中铝上海铜业有限公司 | Continuous production method of overlong copper alloy pipe |
| CN102039328A (en) * | 2010-12-02 | 2011-05-04 | 金川集团有限公司 | Heated mould continuous casting-continuous drawing method of cupronickel alloy condenser pipes |
| CN102240697B (en) * | 2011-05-21 | 2013-12-25 | 广东龙丰精密铜管有限公司 | Production line of copper coil pipe |
| CN103071977A (en) * | 2013-01-06 | 2013-05-01 | 金龙精密铜管集团股份有限公司 | Production method of large-coil-weight white copper alloy coil pipe |
-
2004
- 2004-06-15 CN CN 200410010338 patent/CN1281348C/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101698207B (en) * | 2009-10-20 | 2011-07-20 | 无锡隆达金属材料有限公司 | Method for producing copper alloy coil pipe |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1583306A (en) | 2005-02-23 |
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