CN101224533A - Cu and Cu alloy strip manufacturing method - Google Patents
Cu and Cu alloy strip manufacturing method Download PDFInfo
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- CN101224533A CN101224533A CNA2007100009364A CN200710000936A CN101224533A CN 101224533 A CN101224533 A CN 101224533A CN A2007100009364 A CNA2007100009364 A CN A2007100009364A CN 200710000936 A CN200710000936 A CN 200710000936A CN 101224533 A CN101224533 A CN 101224533A
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Abstract
The invention provides a manufacturing method of a copper strip and a copper alloy strip, which is characterized in that the invention comprises the steps of: step 1, the copper material and the copper alloy material are continuously extruded into copper billet and copper alloy billet by a continuous extrusion method; step 2, the copper billet and the copper alloy billet are rolled into copper strip and copper alloy strip with the required specifications by a rolling method. Further, the section of the billet which is continuously extruded can be rectangle billet or non-closed curved billet. By adopting the method of the invention, the ultra-long copper strip and copper alloy strip can be manufactured; furthermore, the invention has the advantages of high strip quality, low investment of equipments, short working procedure, high efficiency and high yield of the products.
Description
Technical field:
The present invention relates to a kind of manufacture method of sheet metal strip, relate in particular to the manufacture method of copper and copper alloy band.
Background technology:
Copper and copper alloy band are widely used in industries such as electric power, electronics, communication, as the lead frame in the electronics industry, RF cable in the communications industry or the like, such copper and copper alloy band require dense structure, precision height, good plate cut, length is long, mechanical performance is good, so industry is being devoted to seek the low and satisfactory manufacture method of cost always.
The conventional method of manufactured copper and copper alloy band generally has two kinds: first ingot casting hot rolling method (being called for short the hot rolling method), promptly adopt big ingot casting, hot rolling, cold rolling method, be exactly to send into milling train after first ingot casting heats ingot casting again to carry out hot rolling specifically, rollingly more than recrystallization temperature, carry out, rolling and cooling after the multi-pass hot rolling, then through uncoiling, aligning, two-sidedly be used for after milling face, rolling cold rollingly, obtain the band that needs; It two is continuous casting cold-rolling practice (abbreviation cold-rolling practices), be exactly the horizontal casting made-up belt specifically through two-sided mill face after, send into and carry out cold rollingly in the milling train, rollingly under recrystallization temperature, carry out, after multi-pass is rolling, obtain the band that needs.Above-mentioned two kinds of methods respectively have pluses and minuses.For the hot rolling method, the good product quality of production, good mechanical property, stable processing technique, this kind method can be produced the copper and the copper alloy band of the overwhelming majority.But having high input of this kind method equipment, belt length is limited, and the rate of becoming a useful person is low.This kind method need be used conticaster, hot-rolling mill, cold-rolling mill, also needs peeling aborning, mills face or pickling, and technological process is long, cost is high.It is little that cold-rolling practice equipment drops into, and it does not need expensive hot-rolling mill, and the made-up belt of horizontal casting can be done very longly, passes through cold rollingly again, directly rolls finished product.But this kind method also has a lot of problems.At first, because band is a cold rolling microstructure, so its mechanical performance is good not as hot-rolling method, can not bear the back passage and reach meticulousr pressure processing more greatly, simultaneously, the copper base of horizontal casting casting, the copper of casting and copper alloy kind are limited, it is generally to material comparative maturities such as tin bronze, brass, but to the copper alloy of other kind and be not suitable for.
Recognize the defective of above-mentioned two kinds of traditional copper and copper alloy belt material processing method just; the applicant is striving to find always that both cost was low; the processing method that quality is good again; and applied for that on September 8th, 2005 name is called " casting-milling process method of a kind of manufactured copper and copper alloy band "; application number is the modified manufacture method of CN200510102437.7; this method is to improve on the basis of above-mentioned two kinds of traditional diamond-making techniques and obtain; it mainly is that advantage with two kinds of traditional diamond-making techniques organically combines; increased " insulation; samming "; " fast cooling " and in insulation; samming; carry out the technology of inert gas shielding in rolling; thereby in the quality that has guaranteed processed copper and copper alloy band, reduced operation; having reduced cost, is more satisfactory; practical copper and copper processing method.But this kind processing method is not still broken away from traditional casting, rolling main line, and cost is still higher relatively, and insulation, equal gentle inert gas shielding, quick cooling all need a large amount of equipment to guarantee.For this reason, the applicant can guarantee in continuous exploration that cost is lower under the processed strip quality situation, lumber recovery is high always, operation still less, the processing method of more convenient easy row and good product quality.
The technology that has continuously extruded non-ferrous metal in the known technology, technology and equipment such as continuously extruded aluminum tube, copper bar for example, the applicant therefrom gains enlightenment: if adopt continuously extruded technology that production of copper and the needed blank of copper alloy band are provided, may obtain result preferably.For this reason, the applicant makes copper and copper alloy band blank for the employing continuous extrausion process, and then is rolled, and has carried out good try and test of many times, thereby has obtained a kind of brand-new copper of the present invention and the manufacture method of copper alloy band.
Continuously extruded technology is a kind of extruding non-ferrous metal section bar method that is used for specially in the Britain company invention seventies in last century, it can be used for products such as extruded aluminum tube, copper bar, this kind technology is as known technology, obtained using widely, especially " continuously extruded technology and application a thereof " book (Zhong Yizhu) of publishing with metallurgical industry publishing house in 2004, to the principle of continuously extruded technology, process characteristic, technology theory basis, technology, equipment and at that time application, all done theoretical explanation than system.
In the prior art, for continuously extruded The Application of Technology, mainly comprise and produce aluminium light face pipe, ultraprecise section bar, aluminum-titanium alloy silk, copper and copper alloy section bar and tubing, continuous extrusion production copper bar etc. for example, never will this continuously extruded technology and the production of copper and copper alloy band connect.So-called continuous extrusion production copper bar, its method be exactly continuous copper bar with certain specification after surface treatment by continuous being pressed in the mould of frictional force between squeegee roller and the pressure target, coil again after forming continuous copper bar.
After deliberation, discovery is in continuously extruded process, can produce very big extruding heat, for copper-based material, its extrusion temperature can be above 450 ℃, this temperature is greater than the recrystallization temperature of copper-based material, and the copper base material after therefore continuously extruded is a hot-working tissue, and the back passage processing of its product, serviceability etc. are all poor unlike the product of hot rolling method production.Simultaneously, because what adopt is continuously extruded, the product after its extruding can be very long, for copper bar, and can rolling production; Change different moulds, can squeeze out different cross section, difform copper material again.
The continuously extruded technology of copper bar can only be pushed undersized copper strips and copper strap wire at first, as specification products such as 30mm * 3mm, 40mm * 4mm, but now seen the report that width reaches the 200mm copper bar, believed along with 300 millimeters of the development of technology even wideer copper material also can be with continuously extruded method productions.
Along with the increase of the width of copper bar, broken away from the notion of traditional copper bar, the applicant is just from this point, consider continuously extruded super wide copper-based material perhaps can give produce high-quality copper and copper alloy band provide new space for base.
On this basis, the applicant obtains the present invention by research and test, the invention provides a kind of novel, be different from the method for the manufactured copper and the copper alloy band of prior art fully, promptly at first adopt continuously extruded method extruding copper and copper alloy base, and then adopt rolling method that it is rolled into the copper and the copper alloy band of required specification.
Summary of the invention:
The present invention is intended to overcome the defective of copper and copper alloy belt manufacture process in the prior art, provides a kind of and uses that equipment is few, operation is few, cost is low, lumber recovery is high and the manufacture method of the copper of good product quality and copper alloy band.
Manufacture method according to copper of the present invention and copper alloy band is characterized in that:
The first step adopts continuously extruded method with copper and continuously extruded one-tenth copper of Cu alloy material and copper alloy base;
In second step, adopt rolling method described copper and copper alloy base to be rolled into the copper and the copper alloy band of required specification.
Further preferable methods is: the copper of described continuously extruded one-tenth and copper alloy base are the square-section base.
The copper of described continuously extruded one-tenth and copper alloy square type cross section base before entering described rolling process of second step, carry out broadening processing to it.
Further, the copper of described continuously extruded one-tenth and copper alloy base cross section curve parison for not sealing.
The cross section of described continuously extruded one-tenth is launched to flatten for the curve parison that does not seal, be processed into wide rectangular bloom.
That described rolling method comprises is cold rolling, hot rolling, tandem rolling and reversible rolling.Described rolling method also can be the milling train that adopts heavy reduction to described copper and copper alloy base carry out rolling.
With the first step described carry out continuously extruded equipment and second the step the described equipment that is rolled be installed together in proper order, be combined into a continuous production line.Perhaps, described continuously extruded equipment of the first step and the described equipment that is rolled of second step are installed separately, not on same production line.
According to the above-mentioned copper of the present invention and the manufacture method of copper alloy, have following advantage:
1, can production overlength copper and copper alloy band:
Copper that the present invention produced and copper alloy band can equally with the horizontal casting cold-rolling practice be produced the overlength band, and ingot casting hot rolling method will be accomplished overlength, and it is very big that the hot rolling ingot just requires, and the input of equipment is just very big.As the copper strips of domestic existing 0.4mm, the longest hot rolling base can not surpass volume of 2500m yet, and adopts continuous extrausion process of the present invention, can produce the product of endless in theory, the copper of this overlength and copper alloy band are on the communications industry, on the cable industry etc., have a large amount of application.
2, can produce high-quality copper and copper alloy band:
Because copper and Cu alloy material have produced very high temperature in by continuously extruded process, met or exceeded its recrystallization temperature, thereby make copper and the copper alloy band that the present invention produced, have and the same good mechanical performance of hot-rolled band, it can be used in all spectra that the hot rolling band uses, as lead frame, copper cover aluminum etc., adopt the copper-clad aluminum conductor that the present invention produced to be stretched to 0.08mm even thinner without intermediate annealing always.
3, equipment investment is few:
Equipment required for the present invention only needs to drop into and is used for squeezing extruder continuously and being used for rolling equipment is that milling train gets final product, calculate to produce 10000 tons of bands every year, adopt the general input 1000-1500 that only needs of method of the present invention can produce for ten thousand yuan, adopt the hot rolling method generally then to need to drop into 100,000,000 yuan even more, it drops into generally also more than 3,000 ten thousand yuan to adopt the horizontal casting cold-rolling practice.
4, operation is short, efficient is high:
Flow process of the present invention is short, and the efficient height generally does not need pickling in the production process, mills the manufacturing procedure that face etc. is assisted, and lumber recovery also can reach more than 90%, exceeds more than 10% than traditional method.
5, lumber recovery height:
Because development along with continuously extruded technology and equipment, the copper and the copper alloy base that can be continuously extruded go out broad, thereby the present invention is rolled the copper and the copper alloy base of this broad again, just can reduce that material is decaptitated, truncated, the loss of side cut etc., thereby improve the lumber recovery of product, this also is the basis that continuously extruded technology is used in the present invention.
Description of drawings:
Fig. 1 is the schematic cross-section of several not closed curve parisons;
Fig. 2 is a kind of continuously extruded die profile;
Fig. 3 is another continuously extruded die profile.
Wherein, 1 is copper and the copper alloy base that is extruded, 2 and 2
1Be mould.
The specific embodiment:
First preferred version of the present invention is: the copper of earlier that continuous casting is good certain specification and the copper alloy pole stock is squeezed into required specification by continuously extruded method copper and copper alloy square parison.Generally speaking, copper and copper alloy base after continuously extruded are wide more good more, because the lumber recovery of the wide more then band of blank is just high more, production efficiency is just high more.Subsequently, the rectangular bloom that forms is rolled, rolling method can be cold rolling, hot rolling, tandem rolling, also can adopt reversible rolling, if rectangular bloom is thicker, as thickness greater than 8mm, also can adopt the milling train of heavy reduction, as planetary rolling, pendulum mill, cycle milling train etc., rectangular bloom is carried out the rolling of heavy reduction, the general passage of such milling train can be rolled down to below the 2mm surpassing the thick blank of 10mm.
For example, on continuous extruder, carry out continuously extruded to red copper, obtain the rectangular bloom that width * thickness is 150mm * 6mm, send into again that to be rolling to 2mm in the reversable mill thick, and then through the rolling 0.4mm of tandem rolling unit thick and 6 roller mills to be rolled to 0.25mm thick, obtain finished product, its length surpasses 6000m, can be used for RF cable outer conductor band, production is successful.
Wideer if desired product can carry out broadening processing to rectangular bloom after continuously extruded and before rolling, and the broadening method for processing can be the universal method of common metal pressure processing.
For example, continuously extruded red copper obtains the rectangular bloom that width * thickness is 150mm * 12mm, enter again in heavy reduction milling train such as the planetary rolling and be rolled, it is thick just can to roll 2mm after the passage, again through after the rolling thick band of Zhongdao 0.36mm in road, can be used for the copper-clad aluminium strip.
And for example, the KFC behind the continuous casting or C194 are carried out continuously extruded, obtain the rectangular bloom of 100mm * 10mm, carry out reversible rolling on reversable mill, the size until needs can be used for lead frame.
Second kind of preferred version of the present invention is: adopt continuously extruded method to squeeze out the curve parison of cross section for not sealing, then its on-line continuous is launched and flattened.The curve parison that does not seal can be semi-circular, mostly round or other multiple curve or straight line is combined, and Fig. 1 is the schematic diagram of several curve parisons that do not seal.Adopt this kind scheme can increase the width of made-up belt, also can use little continuous extruder to produce the made-up belt wideer than rectangular bloom.The purpose of not sealing is to make the stable supporting of bore portion acquisition in the extrusion die, specifically sees Fig. 2 and Fig. 3.Fig. 2, Fig. 3 are continuously extruded die profile, and wherein 1 is the copper base that is extruded, and 2 is mould, but among Fig. 22 and 2
1The centre is unconnected, 2
1The place is supporting not, and among Fig. 3, mould 2 can obtain stable supporting at A point place, can bear huge extruding force.
Certainly, can continuously extruded one-tenth cross section as shown in Figure 2 be the curve base of sealing also, flatten the base of back through cutting open again as the production band, but because this method will realize just must making to be had the slit by the blank after continuously extruded, thereby needing seam the support of enclosure portion in the middle of the mould when continuously extruded, not only increased seam technology and for copper-based material, can produce defective in seam place, therefore, not advise adopting this kind method.
For another example, continuously extruded red copper, the footpath is the copper base of 3/4 circumference of Φ 80mm in obtaining, and thickness is 8mm, and online the expansion flattens and rolling, and launching the back width is between the 180-195mm, and then is rolled, and can make satisfactory band.
Further, can and be used for rolling equipment with continuously extruded equipment and be installed together in proper order, constitute a continuous production line, directly production of copper and copper alloy band; As possibility, also extrusion equipment and rolling equipment can be installed separately, produce copper and copper alloy base and rolling earlier, and then be rolled processing, obtain copper and copper alloy band.How to be provided with, can specifically to determine according to actual conditions such as factories.
Above description of the preferred embodiment of the present invention; purpose is the understanding of the present invention; rather than for restriction of the present invention; anyly all belong to the scope of protection of the invention without schemes such as the replacing of creative work, accommodations on basis of the present invention, specifically the qualification with claims of the present invention is as the criterion.
Claims (9)
1. the manufacture method of copper and copper alloy band is characterized in that:
The first step adopts continuously extruded method with copper and continuously extruded one-tenth copper of Cu alloy material and copper alloy base;
In second step, adopt rolling method described copper and copper alloy base to be rolled into the copper and the copper alloy band of required specification.
2. the manufacture method of copper according to claim 1 and copper alloy band is characterized in that: the copper of described continuously extruded one-tenth and copper alloy base are the square-section base.
3. according to the manufacture method of claim 1 or 2 arbitrary described copper and copper alloy band, it is characterized in that: the copper of described continuously extruded one-tenth and copper alloy square type cross section base, before entering described rolling process of second step, carry out broadening processing to it.
4. the manufacture method of copper according to claim 1 and copper alloy band is characterized in that: the copper of described continuously extruded one-tenth and the copper alloy base cross section curve parison for not sealing.
5. the manufacture method of copper according to claim 4 and copper alloy band is characterized in that: the cross section of described continuously extruded one-tenth is launched to flatten for the curve parison that does not seal, be processed into wide rectangular bloom.
6. the manufacture method of copper according to claim 1 and copper alloy band is characterized in that: described rolling method comprises cold rolling, hot rolling, tandem rolling and reversible rolling.
7. the manufacture method of copper according to claim 1 and copper alloy band is characterized in that: described rolling method for the milling train that adopts heavy reduction to described copper and copper alloy base carry out rolling.
8. the manufacture method of copper according to claim 1 and copper alloy band is characterized in that: described continuously extruded equipment of the first step and the described equipment that is rolled of second step are installed together in proper order, are combined into a continuous production line.
9. the manufacture method of copper according to claim 1 and copper alloy band is characterized in that: described continuously extruded equipment of the first step and the described equipment that is rolled of second step are installed separately, not on same production line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007100009364A CN101224533A (en) | 2007-01-15 | 2007-01-15 | Cu and Cu alloy strip manufacturing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007100009364A CN101224533A (en) | 2007-01-15 | 2007-01-15 | Cu and Cu alloy strip manufacturing method |
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| CN101224533A true CN101224533A (en) | 2008-07-23 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102482768A (en) * | 2009-09-18 | 2012-05-30 | 古河电气工业株式会社 | Copper material for use as sputtering target and process for producing same |
| CN102909235A (en) * | 2012-10-29 | 2013-02-06 | 江西广信铜业有限公司 | Production method of high-precision special-shaped copper and copper alloy strips |
| CN103151105A (en) * | 2013-03-12 | 2013-06-12 | 河北华通线缆集团有限公司 | Low smoke zero halogen (LSZH) insulation and extrusion soft copper bar and manufacturing method thereof |
| CN103722040A (en) * | 2013-11-18 | 2014-04-16 | 青岛盛嘉信息科技有限公司 | Production technique of copper strips |
| CN105107862A (en) * | 2015-09-24 | 2015-12-02 | 云南新铜人实业有限公司 | Copper bar continuous extrusion short process production method |
-
2007
- 2007-01-15 CN CNA2007100009364A patent/CN101224533A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102482768A (en) * | 2009-09-18 | 2012-05-30 | 古河电气工业株式会社 | Copper material for use as sputtering target and process for producing same |
| CN102482768B (en) * | 2009-09-18 | 2014-03-12 | 古河电气工业株式会社 | Copper material for use as sputtering target and process for producing same |
| CN102909235A (en) * | 2012-10-29 | 2013-02-06 | 江西广信铜业有限公司 | Production method of high-precision special-shaped copper and copper alloy strips |
| CN103151105A (en) * | 2013-03-12 | 2013-06-12 | 河北华通线缆集团有限公司 | Low smoke zero halogen (LSZH) insulation and extrusion soft copper bar and manufacturing method thereof |
| CN103722040A (en) * | 2013-11-18 | 2014-04-16 | 青岛盛嘉信息科技有限公司 | Production technique of copper strips |
| CN105107862A (en) * | 2015-09-24 | 2015-12-02 | 云南新铜人实业有限公司 | Copper bar continuous extrusion short process production method |
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Open date: 20080723 |