CN1221336C - Method of manufacturing copper and copper alloy pipes using planetary tube mill - Google Patents
Method of manufacturing copper and copper alloy pipes using planetary tube mill Download PDFInfo
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- CN1221336C CN1221336C CN 03149757 CN03149757A CN1221336C CN 1221336 C CN1221336 C CN 1221336C CN 03149757 CN03149757 CN 03149757 CN 03149757 A CN03149757 A CN 03149757A CN 1221336 C CN1221336 C CN 1221336C
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Abstract
The present invention relates to a method for manufacturing copper pipes and copper alloy pipes by a planetary tube rolling mill, which belongs to rolling technology for metal pipe materials. Tube blanks of copper and copper alloy are rolled by a planetary tube rolling mill in the method. The method comprises three specific steps that a tube blank surface machine is used for processing and treatment; tube blanks are rolled into pieces at the rolling temperature of 701 DEG C to 850 DEG C at a high deformation speed rate; and the rolled pieces are finally quickly cooled. Compared with the prior art, the manufacturing method has the advantages of fewer procedures, high rolling yield, low manufacture cost, stable quality of tubular products, etc.
Description
Technical field
The invention belongs to the metal pipe material rolling technique.Specifically be a kind of intensification phenomenon certainly and thermomechanical treatment principle of using metal large deformation under deformation speed to take place, by level or continuous up-casting copper and copper alloy pipe, through machining surface processing purified treatment, then in high lengthening coefficient under 701 ℃～850 ℃ temperature and deformation speed rolling, after dynamic recrystallization takes place, carry out online quick cooling, and the method for processing and manufacturing copper and copper alloy tube.
Background technology
The manufacture method of existing copper and copper alloy tube, main have four kinds of drilling/rolling method, extrusion and cold working casting and roll process, temperature processing casting and roll processes etc.And traditional preceding two kinds of methods all exist deficiencies such as operation is many, lumber recovery is low, tubing manufacturing cost height, manufactured goods quality instability, are substituted by other technology gradually.And the third cold working casting and roll process, as the disclosed application number of Chinese patent be 88101739.6, name is called " method of hard cooper and copper alloy ".This method is with continuously cast billet for pipe-making or extrusion tube blank, directly sends into the PSW planetary rolling and carries out cold rolling.It is the internal friction that utilizes reduction of pipe area and material deformation to be produced, and makes pipe under the temperature conditions that is warmed up to 250 ℃-700 ℃ (being the recrystallization temperature of respective material), carries out the rolling a kind of more advanced method at present of tubing processing.This method has that operation is few, cost is low and the lumber recovery advantages of higher.But because the technical scheme that this method is taked is cold rolling processing, enter the temperature of the pipe of milling train deformed area, be environment temperature substantially, and cause the starting stage of pipe after entering the deformed area, can produce a large amount of crackles at the surfaces externally and internally of pipe.Can be although crackle is most of by pressing in the operation of rolling, but still some crackle is present in the section structure of goods tubing with folding mode.According to the patent specification introduction, the rolling temperature of this method is 250 ℃～700 ℃, obviously it surpasses the degree of superheat deficiency of recrystallization temperature, when tube rolling terminates, the length direction of tubing and between with many tubing of a collection of rolled piece the incomplete recrystallized structural difference of various degrees.This incomplete recrystallized, cause the local tensile strength of finished product tubing and percentage elongation all unstable.Because this cold rolling mode makes the dynamic recrystallization process just begin to the middle part, deformed area, so that crystallization is incomplete, inadequate again, and is unfavorable for the fine and closely woven and pore of tubing section structure, the eliminating of slag inclusion.Especially this cold rolling process, to the casting flaw of the inevitable existence of its supplied materials pipe surface institute, do not make any purified treatment, this is in the pipe operation of rolling, casting flaws such as slag inclusion that the pipe surface can be existed and pore rub up in the section structure of tubing inevitably.Take a broad view of the method for existing this cold working casting copper and copper alloy tube, the existing collapsible crackle of its manufactured goods tubing, incomplete recrystallized, the existence of pipe surface casting flaw, and have a strong impact on the deficiency of pipe workpiece quality and follow-up deep processing pipe workpiece quality, be conspicuous.According to technical literatures such as " copper alloy forgings " record, the red brittleness humidity province of copper is 600 ℃～700 ℃, can occur inevitably being mingled with at the tubing of this temperature range processing, fold, critical defect such as crackle, thereby cause the serious quality problems of goods appearance.
The 4th kind of temperature processing casting and roll process, as the disclosed application number of Chinese patent be 02138022.8, name is called " method of warm processing and manufacturing copper and copper alloy tube ", this method is with continuously cast billet for pipe-making or extrusion tube blank, through being preheated to environment temperature to again between the crystallization onset temperature, sending into three-roller planetary rolling mill then is rolled, rolling back is incubated under the condition that is higher than 30 ℃～80 ℃ of rolling temperatures, rolled piece cooled off fast realize again.It is to utilize preheat temperature and the pipe area reduction distortion institute heat that produces to superpose, pipe is rolled being higher than under 700 ℃ of temperature, substantially overcome the major defect of No. 88101739.6 patent cold rolling process of Chinese patent, but the rolling temperature easy-regulating not of stack makes the quality of item instability; To the impact of equipment such as gear, rolled piece end preheat temperature was different with its elsewhere when this method was nipped for reducing rolled piece simultaneously, and is wayward and reduced rolling efficiency; For making rolled piece crystallization fully again, need follow-up insulation, increased energy consumption and operation.Therefore, still there is defective in this milling method, needs to improve.
Summary of the invention
The copper of the object of the present invention is to provide that a kind of manufacturing process is few, lumber recovery is high, low cost of manufacture, goods pipe workpiece quality are good, stable and the manufacture method of copper-alloy pipe-material are to overcome the deficiency of prior art.
Realize the principle of the object of the invention, mainly based on utilization plastic working and thermomechanical treatment principle, formerly continuously cast billet for pipe-making being done surperficial machined removal of impurities handles, and then pipe is imported the distortion rolling equipment, make pipe roll forming in 701 ℃～850 ℃ temperature range, cool off fast with the rolled parts that is about to be shaped and make finished product.
The fundamental difference of said manufacture method of the present invention and prior art is, at first the present invention carries out machining surface processing removal of impurities processing to pipe, and then importing distortion rolling equipment, make pipe that the rolled piece temperature is elevated in 701 ℃～850 ℃ the temperature range immediately, simultaneously because the thermal conductive resin that copper and copper alloy have, the temperature of deformed area can be transmitted to fast and be about to enter on the pipe of deformed area, make the pipe that enters the deformed area subsequently have an initial temperature, thereby cut down the consumption of energy effectively, reduce manufacturing cost; And the rolling temperature that makes pipe is stabilized in 701 ℃～850 ℃, has enough degrees of superheat and guarantees rolled piece generation dynamic recrystallization, realizes perfect recrystallization.Thereby make the present invention reach the original intention that improves rolling efficiency and pipe workpiece quality.
The said milling method of the present invention, rolling temperature can reach 701 ℃～850 ℃, make it to have enough degree of superheat generation dynamic recrystallizations, thereby improved the lengthening coefficient of pipe distortion, prolonged the process of pipe deformed region scope and dynamic recrystallization, do not needed that the rolled piece after rolling is carried out the samming insulation and handle; Simultaneously do not need workpiece front end is carried out The pre-heat treatment, just overcome when rolled piece is nipped impact milling train.Save process flow, improved rolling efficiency, increased the milling material quality of stability.
Manufacture method of the present invention owing to can make the pipe of deformed area be in the dynamic recrystallization state, therefore can allow to use mill speed faster, thereby has increased the output of separate unit milling train.In addition, the tubing temperature that narrower rolling temperature region chien shih shuts out is even, can obtain equi-axed crystal completely when quick cooling subsequently.
The present invention relates to the method for planetary rolling machine manufactured copper and copper alloy tube, it is characterized in that, utilize the planetary rolling machine that copper and copper alloy pipe are rolled, described rolling step is as follows:
The first step is carried out machined to the surface of pipe, to remove the casting flaw on pipe surface;
In second step, pipe roll forming imports the planetary rolling machine with the pipe after the first step processing under protective atmosphere, make pipe be rolled shaping with large deformation, two-forty under the rolling temperature between 701 ℃～850 ℃, obtains tube rolling spare;
In the 3rd step, cold rolling spare makes described rolled parts by the emulsion bath fast, realizes cooling fast.
Wherein utilize the planetary rolling machine to copper and copper alloy pipe carry out rolling, described rolling further step is as follows:
Utilization has the 2-6 roller planetary rolling machine of protective atmosphere device, adjustable pipe rolling temperature, and the pipe of copper and copper alloy is rolled, and is wherein said
The first step is carried out machine to the surface of pipe and is added step, is the processing method that adopts car or mill or grind, and its machined cutting depth is controlled in 0.3mm～0.5mm scope, to remove the casting flaw on pipe surface;
In the 3rd step, described quick cold rolling spare step makes the rolled parts of the second step roll forming, with the rolling speed of 12m/min～30m/min, is the emulsion bath of 1～1.5m by length, realizes cooling fast.
Said pipe material is T2, TP1, TP2, BFe10-1-1, BFe30-1-1, HSn70-1, HAl77-2, H62, H68.
The present invention is according to copper and the different recrystallization temperature of multiple copper alloy, and above steps can have multiple concrete technical measures.But the present invention through repeatedly the experiment and preferably the concrete technical measures of each step be:
Pipe machining surface procedure of processing, what take is the car or the processing method of milling or grinding, and its machined cutting depth, is controlled in the scope that can remove pipe surface casting flaw.By the processing of pipe machining surface, make the pipe surface be non-oxidation light attitude.For the horizontally continuous casting copper pipes base, cutting depth generally is controlled in 0.3mm～0.5mm scope.Be higher than Vehicle Processing owing to mill the processing work efficiency again, so the present invention's recommendation is to mill processing.Formed waste material after milling the processing cutting can be collected the back reuse immediately.
The rolling step of pipe is under the protective atmosphere condition, and and then the pipe after the first step is handled imports the planetary rolling machine.In fact the present invention is on the continuous production line of a time, carries out 3 steps of the present invention successively.Thereby correctly say, be with the pipe after the surface treatment, and then import the rolling district of distortion, pipe is under 701 ℃～850 ℃ rolling temperature condition, roll forming.Because pipe is at it deformation to take place more than the recrystallization temperature and under very big degree of superheat state, it is more complete, more abundant that everything helps the process of dynamic recrystallization of copper and copper alloy, to obtain aplitic texture more uniformly, because pipe is under the roll off repeatedly of a plurality of rolls of multiple roll planetary rolling, thereby the success that has guaranteed to produce high-quality tubing effectively.
At the rolled parts cooling step, be that and then second step is quickly cooled to environment temperature with the rolled parts of roll forming.And the quick cooling purpose of water-bath of the present invention is to make the rolling speed of tube rolling spare with 12m/min～30m/min, by what realize in the emulsion bath that is about 1～1.5m.Cooling essence is a kind of thermomechanical treatment fast, and its purpose mainly is the crystal grain of refinement copper, makes tubing of the present invention, is in the excellent mechanical property state in follow-up deep-processing process and even under the working condition of subsequent product for a long time.
As described in formerly, the rolling temperature of pipe is the principal element of decision pipe rolling quality.In view of above-mentioned consideration, the present invention pays attention to being out of shape selecting for use of rolling equipment especially, requires selected distortion rolling equipment should satisfy adjustable pipe rolling temperature at least, has the protective atmosphere device, to pipe requirement such as roll off and roll off area be bigger repeatedly.The present invention preferably is out of shape rolling equipment, is 2～6 roller planetary rolling machines.
The present invention realizes by sending out following three kinds of technical measures for the online adjusting and the control of pipe rolling temperature on rolling and two step continuous processing lines of cooling:
First kind is the control technique measure that is applied on the concerned process steps.It is by adjusting the pipe feed rate, regulating and control the pipe rolling temperature by rolling coolant rate, the single pass contraction percentage of area of roll.
And second kind be the control technique measure that is applied in the relevant speed of rolling equipment.It is that the height of the rate of deformation that realizes by the rotating speed of said planetary rolling machine rotary disk and rolling speed is regulated and control the pipe rolling temperature.The present invention preferably adjusts the range of speeds of planetary rolling machine rotary disk, be controlled within 350rpm～600rpm, and the scope of adjustment rolling speed is controlled within 12m/min～30m/min.
And the third is the control technique measure that is applied on the dependency structure of rolling equipment.It is to send angle to by the roll of adjusting said planetary rolling machine, and regulation and control pipe rolling temperature.The present invention preferably adjusts the scope that said roll is sent angle to, is controlled between 4 °～8 ° degree.
Adopt the technical solution of the present invention, can bring when manufactured copper and copper alloy tube that manufacturing process is few, lumber recovery is high, the beneficial effect of low cost of manufacture, goods pipe workpiece quality good stable, overcome the deficiency and the defective of prior art.
The specific embodiment
To be described further milling method of the present invention by the following specific embodiment, so that the present invention is realized that the technical scheme of its purpose and characteristics obtain more detailed understanding.
A kind of preferred implementation of the present invention is rolling phosphorized copper (TP2) pipe.Rollingly on XR-SG90 three-roller planetary pipe mill, carry out.Pipe is a horizontal casting, and original dimension is φ 90 * 25mm, and pipe is via the process equipment that mills of 3 milling heads before rolling, carry out surface treatment, its cutting depth is 0.3mm, makes the pipe surface be non-oxidation light attitude, carries out the rolling processing by XR-SG90 three-roller planetary pipe mill then.Pipe mill is that 15m/min, the single pass contraction percentage of area are about 93.8% and carry out work with the rolling speed, and then pipe is warming up to 750 ℃ after entering the deformed area immediately, and constantly with its rolling pipe fitting send to forward.Even enter with the rolled pipe part in the emulsion bath of long 1.5m, rolling pipe fitting approximately in the time in 6 seconds by water-bath, realize cooling fast, crooked then rolling.Copper pipe specification after rolling is φ 47 * 2.2mm, and lengthening coefficient is 16.2, and copper pipe surface and body do not have any folding pattern and other defect exists, and rolls back body metallographic structure and is very thin equi-axed crystal state (perfect recrystallization attitude).Tensile strength and percentage elongation are respectively 240MPa～250MPa and 45%～55%.The reflection of finished product eddy current inspection assay, every km only is 0～2 defect point.Rolling back tubing is best in quality, and rolling is successful.
Another preferred embodiment of the present invention is rolling horizontal casting HSn70-1 brass tube.Rollingly on XR-SG90 three-roller planetary pipe mill, carry out, the pipe original dimension is φ 83 * 22mm, through milling processing processing is cut on the pipe surface, cutting depth is 0.5mm, make the pipe surface be the non-oxidation bright state, enter XR-SG90 three-roller planetary pipe mill then, thereafter rolling as above-mentioned first embodiment, and its rolling temperature is 800 ℃, rolling speed is 18m/min, the single pass contraction percentage of area is about 92.65%, brass tube specification after rolling is φ 47 * 2.2mm, and its lengthening coefficient is 13.6, and copper pipe surface and body do not have any folding pattern and other defect, its tensile strength and percentage elongation are respectively 290MPa～380MPa and 25%～40%, and Electronic Speculum shows that the metallographic structure of rolling the back body is very fine and close.Rolling is successful.This copper pipe does not almost have the disconnected pipe phenomenon that the defective because of body itself takes place in follow-up stretching.
In sum, the on-line continuous flow chart that the present invention had is few, the automaticity height, mill speed is fast, and the lumber recovery height, the tubing low cost of manufacture, advantages such as tubing quality better, overcome defective and deficiency that prior art exists, compared with prior art, the present invention has tangible substantive distinguishing features and obvious improvement.
The foregoing description is the understanding of the present invention, is not considered as limitation of the present invention, any accommodation that those of ordinary skill in the art makes on basis of the present invention, all belong to protection scope of the present invention without the scheme of creative work.
Claims (6)
1, the method for planetary rolling machine manufactured copper and copper alloy tube is characterized in that, utilizes the planetary rolling machine that the pipe of copper and copper alloy is rolled, and described rolling step is as follows:
The first step is carried out machined to the surface of pipe, to remove the casting flaw on pipe surface;
Second step, pipe roll forming, under protective atmosphere, the pipe after the first step processing is imported the planetary rolling machine, make pipe under the rolling temperature between 701 ℃～850 ℃ with the single pass contraction percentage of area 85%～95%, be rolled shaping with the mill speed of 12m/min-30m/min, obtain tube rolling spare;
In the 3rd step, cold rolling spare makes described rolled parts by the emulsion bath fast, realizes cooling fast.
2, according to the method for claim 1 described planetary rolling machine manufactured copper and copper alloy tube; it is characterized in that; utilization has 2～6 roller planetary rolling machines of protective atmosphere device, adjustable pipe rolling temperature, and the pipe of copper and copper alloy is rolled, and is wherein said
The first step is carried out machine to the surface of pipe and is added step, is the processing method that adopts car or mill or grind, and its machined cutting depth is controlled in 0.3mm～0.5mm scope, to remove the casting flaw on pipe surface;
In the 3rd step, described quick cold rolling spare step makes the rolled parts of the second step roll forming, with the rolling speed of 12m/min～30m/min, is the emulsion bath of 1～1.5m by length, realizes cooling fast.
3, the method for planetary rolling machine manufactured copper according to claim 1 and 2 and copper alloy tube is characterized in that, in second step, described rolling temperature is regulated and control by adjusting pipe feed rate, rolling coolant rate, the single pass contraction percentage of area.
4, the method for planetary rolling machine manufactured copper according to claim 1 and 2 and copper alloy tube, it is characterized in that, in second step, described rolling temperature be by planetary rolling machine rotary disk rotating speed in 350～600rpm scope, and the adjusting of rolling speed in 12～30m/min scope regulate and control.
5, the method for planetary rolling machine manufactured copper according to claim 1 and 2 and copper alloy tube is characterized in that, in second step, described rolling temperature is to send the adjusting of angle in 4 °～8 ° scopes to by planetary rolling machine roll to regulate and control.
6, the method for planetary rolling machine manufactured copper according to claim 1 and 2 and copper alloy tube is characterized in that, said pipe material is T2, TP1, TP2, BFe10-1-1, BFe30-1-1, HSn70-1, HAl77-2, H62, H68.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03149757 CN1221336C (en) | 2003-08-05 | 2003-08-05 | Method of manufacturing copper and copper alloy pipes using planetary tube mill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03149757 CN1221336C (en) | 2003-08-05 | 2003-08-05 | Method of manufacturing copper and copper alloy pipes using planetary tube mill |
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| CN1475316A CN1475316A (en) | 2004-02-18 |
| CN1221336C true CN1221336C (en) | 2005-10-05 |
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| CN 03149757 Expired - Fee Related CN1221336C (en) | 2003-08-05 | 2003-08-05 | Method of manufacturing copper and copper alloy pipes using planetary tube mill |
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Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100372621C (en) * | 2006-04-24 | 2008-03-05 | 江苏兴荣高新科技股份有限公司 | Method for manufacturing copper aluminium composite tubing and copper aluminium tubing produced thereby |
| CN101569893B (en) * | 2009-05-11 | 2012-10-24 | 金龙精密铜管集团股份有限公司 | Manufacturing method of aluminum or aluminum-alloy seamless pipe |
| 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 |
| CN102728650A (en) * | 2012-06-20 | 2012-10-17 | 金龙精密铜管集团股份有限公司 | Processing method of metal pipe material |
| CN103230961B (en) * | 2013-05-03 | 2015-09-09 | 江苏兴荣高新科技股份有限公司 | The manufacture method of copper alloy tube and copper alloy tube |
| CN104028557B (en) * | 2014-05-20 | 2017-02-15 | 江苏兴荣高新科技股份有限公司 | Copper or copper alloy strip and manufacturing method and producing device thereof |
| CN104526261A (en) * | 2014-11-10 | 2015-04-22 | 胜利油田高原石油装备有限责任公司 | Cold-rolling technology for manufacturing admiralty brass C44300 oil-well pump cylinder blank pipe |
| CN104785571B (en) * | 2015-03-19 | 2017-04-19 | 中国科学院金属研究所 | Method for producing diameter-variable tube |
| CN115008141A (en) * | 2022-08-05 | 2022-09-06 | 江苏允能新材料科技有限公司 | Casting-rolling manufacturing method of brass pipe and brass pipe |
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- 2003-08-05 CN CN 03149757 patent/CN1221336C/en not_active Expired - Fee Related
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| CN1475316A (en) | 2004-02-18 |
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