EP0979688B1 - Verfahren zur Herstellung von Kupferrohren - Google Patents
Verfahren zur Herstellung von Kupferrohren Download PDFInfo
- Publication number
- EP0979688B1 EP0979688B1 EP98112609A EP98112609A EP0979688B1 EP 0979688 B1 EP0979688 B1 EP 0979688B1 EP 98112609 A EP98112609 A EP 98112609A EP 98112609 A EP98112609 A EP 98112609A EP 0979688 B1 EP0979688 B1 EP 0979688B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- tin
- tube
- process according
- plated
- copper
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 239000010949 copper Substances 0.000 title claims abstract description 56
- 229910052802 copper Inorganic materials 0.000 title claims abstract description 52
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 title claims abstract description 51
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 15
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 claims abstract description 38
- 229910021626 Tin(II) chloride Inorganic materials 0.000 claims abstract description 4
- 238000000354 decomposition reaction Methods 0.000 claims abstract description 4
- 239000012266 salt solution Substances 0.000 claims abstract description 4
- 238000000034 method Methods 0.000 claims description 28
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 6
- 238000001125 extrusion Methods 0.000 claims description 5
- 238000001953 recrystallisation Methods 0.000 claims description 5
- 239000007789 gas Substances 0.000 claims description 3
- 239000001257 hydrogen Substances 0.000 claims description 3
- 229910052739 hydrogen Inorganic materials 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 3
- 229910052757 nitrogen Inorganic materials 0.000 claims description 3
- 238000005096 rolling process Methods 0.000 claims description 3
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 2
- 238000005266 casting Methods 0.000 claims description 2
- 238000003466 welding Methods 0.000 claims description 2
- 238000004070 electrodeposition Methods 0.000 claims 1
- 238000010438 heat treatment Methods 0.000 claims 1
- 150000002431 hydrogen Chemical class 0.000 claims 1
- 239000011248 coating agent Substances 0.000 abstract description 14
- 238000000576 coating method Methods 0.000 abstract description 14
- 239000003651 drinking water Substances 0.000 abstract description 7
- 235000020188 drinking water Nutrition 0.000 abstract description 7
- 238000009434 installation Methods 0.000 abstract description 6
- 229910052718 tin Inorganic materials 0.000 description 32
- 239000000126 substance Substances 0.000 description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 8
- 238000009792 diffusion process Methods 0.000 description 5
- 238000012360 testing method Methods 0.000 description 5
- 238000013508 migration Methods 0.000 description 4
- 230000005012 migration Effects 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 3
- 229910000881 Cu alloy Inorganic materials 0.000 description 2
- 229910045601 alloy Inorganic materials 0.000 description 2
- 239000000956 alloy Substances 0.000 description 2
- 238000000137 annealing Methods 0.000 description 2
- BVKZGUZCCUSVTD-UHFFFAOYSA-N carbonic acid Chemical compound OC(O)=O BVKZGUZCCUSVTD-UHFFFAOYSA-N 0.000 description 2
- 230000001590 oxidative effect Effects 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 238000004381 surface treatment Methods 0.000 description 2
- XOLBLPGZBRYERU-UHFFFAOYSA-N tin dioxide Chemical compound O=[Sn]=O XOLBLPGZBRYERU-UHFFFAOYSA-N 0.000 description 2
- 229910001887 tin oxide Inorganic materials 0.000 description 2
- JPVYNHNXODAKFH-UHFFFAOYSA-N Cu2+ Chemical compound [Cu+2] JPVYNHNXODAKFH-UHFFFAOYSA-N 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 229910000905 alloy phase Inorganic materials 0.000 description 1
- 239000010953 base metal Substances 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 229910001431 copper ion Inorganic materials 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005238 degreasing Methods 0.000 description 1
- 238000000280 densification Methods 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 229910052748 manganese Inorganic materials 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B23/00—Tube-rolling not restricted to methods provided for in only one of groups B21B17/00, B21B19/00, B21B21/00, e.g. combined processes planetary tube rolling, auxiliary arrangements, e.g. lubricating, special tube blanks, continuous casting combined with tube rolling
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C1/00—Manufacture of metal sheets, metal wire, metal rods, metal tubes by drawing
- B21C1/16—Metal drawing by machines or apparatus in which the drawing action is effected by other means than drums, e.g. by a longitudinally-moved carriage pulling or pushing the work or stock for making metal sheets, bars, or tubes
- B21C1/22—Metal drawing by machines or apparatus in which the drawing action is effected by other means than drums, e.g. by a longitudinally-moved carriage pulling or pushing the work or stock for making metal sheets, bars, or tubes specially adapted for making tubular articles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C37/00—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
- B21C37/06—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of tubes or metal hoses; Combined procedures for making tubes, e.g. for making multi-wall tubes
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D7/00—Electroplating characterised by the article coated
- C25D7/04—Tubes; Rings; Hollow bodies
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
- B21B1/38—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling sheets of limited length, e.g. folded sheets, superimposed sheets, pack rolling
- B21B2001/383—Cladded or coated products
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B3/00—Rolling materials of special alloys so far as the composition of the alloy requires or permits special rolling methods or sequences ; Rolling of aluminium, copper, zinc or other non-ferrous metals
- B21B2003/005—Copper or its alloys
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B15/00—Arrangements for performing additional metal-working operations specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
- B21B2015/0028—Drawing the rolled product
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B21/00—Pilgrim-step tube-rolling, i.e. pilger mills
Definitions
- the invention relates to a method for producing copper pipes with an internally tinned Surface.
- Installation pipes are made seamless drawn SF-Cu pipes. These pipes meet the requirements for wide areas Requirements of the German Drinking Water Ordinance, in which a guideline for copper of 3 mg / l is specified.
- a guideline for copper 3 mg / l is specified.
- the copper value in drinking water is determined over a fixed period of time and a sampling regime, which in the DIN 5093 still available as draft.
- a copper tube which consists of an alloy of Cu and at least one of the elements Zn and Mn, which are contained individually or together in a total amount of 0.02% by weight or more in a copper alloy to prevent an ⁇ phase from growing.
- An Sn protective film with an average layer thickness of 0.2 to 4 ⁇ m is applied to the inner surface of such a copper pipe.
- DE 43 21 244 A1 describes a method for the inner coating of copper pipes known in which a coating of tin oxide and a diffusion intermediate layer is formed from copper / tin alpha monophase by chemical tinning the inner surface of the copper pipe, diffusion annealing of the copper pipe below inert atmosphere and an oxidizing thermal inner surface treatment.
- the layer thickness of the tin oxide layer is 0.05 to 0.5 ⁇ m and that of Diffusion intermediate layer 5 to 20 ⁇ m.
- the chemical tinning process exists from a degreasing stage, rinsing the copper pipe with a chemical tinning solution and a subsequent hot water rinse final drying in hot air.
- the subsequent diffusion annealing takes place at temperatures from 450 to 700 ° C under an inert atmosphere.
- For oxidizing thermal interior surface treatment is a gas mixture at elevated Temperatures used, the exposure time is at least 5 min. This The process is very complex and leads to high costs for the inner coating produced in this way Copper pipes.
- EP 0 723 037 A1 describes a simplified method for producing a Installation pipe made of copper with a tinned inner surface described.
- the inner surface of the copper pipe becomes chemical in a first step
- the cross-section of the tinned copper pipe is tinned deformed by at least 2% by a single finished train.
- the chemical Tin plating of the copper pipe is carried out essentially according to that in DE 43 21 244 A1 described procedure. It becomes a pure tin layer with a thickness of 0.5 up to 4 ⁇ m on the inner surface of the copper pipe.
- the deformation of the internally coated copper pipe is 5 to 40%. By the only one final deformation, the tin layer is compressed.
- the main disadvantage of this method is as follows.
- the chemical Tinning the copper pipe requires several steps and is relatively time-consuming. In addition, only a limited layer thickness can be achieved since Formation of a closed tin layer no more deposition takes place.
- the maximum upper limit of the achievable layer thickness is approx. 5 ⁇ m.
- the subsequent deformation is used only to densify the tin layer in order to close any pores still present in the tin layer.
- the one in practice Applicable degree of deformation is relatively low, since starting from the maximum achievable layer thickness of the tin layer by chemical tinning after Deformation must still have a sufficient tin layer thickness, to prevent the release of copper ions into the drinking water.
- the invention was based on the object of a method for producing copper pipes with an internally tinned surface that is characterized by an effective Distinguishes the mode of operation with which all marketable products within a technological line Assortments for installation pipes can be manufactured and with the finished pipe a sufficiently thick and dense layer of tin can be achieved that meets the requirements the applicable standards for copper migration.
- copper or pre-pipes are Copper alloys of relatively large dimensions in a defined length, such as e.g. Copper pipes with an outer diameter of 85 mm and an inner diameter of 57 mm, preferably in a length of 3 to 6 m.
- the front pipes can have a length of up to 15 m and by extrusion, cross rolling, Casting, welding, mitage or drawing can be made. If necessary these manufacturing processes can also be used in combination, e.g. extrude a pipe blank, which is then cold mited to be coated Fore tube is formed. If necessary, this can not yet be coated Copper pipe at a temperature above the recrystallization temperature of the Copper are annealed.
- the inner surface of the front pipes is in a separate Coating plant by electrolytic decomposition of a tin salt solution with a Tin layer electroplated.
- the coating system can be within a Production line can be integrated or located externally at a separate location are located.
- the galvanic coating known per se has the advantage that this relatively large layer thickness can be applied, e.g. up to 500 ⁇ m. Based on the procedural parameters of the galvanic Depending on the requirements, the coating can have any layer thickness achieve.
- a front pipe of the dimensions mentioned has after Coating with a tin layer with a thickness of 300 ⁇ m a piece weight each 150 kg.
- Such a front pipe is subsequently known by itself Forming processes such as cold crawlage and pulling with flying, semi-flying andloder to a fixed dome within several reduction stages
- Final dimension of the finished tube formed depending on the respective reduction stages can make various assortments of finished tubes from a down tube getting produced.
- a front pipe with a length of 5 m an outer diameter of 85 mm and a wall thickness of 14 mm (85 x 14) as well as an internal tinning with a layer thickness of 300 ⁇ m, 370 m finished pipe (15 x 1) with a Tin layer thickness of 18 microns can be produced.
- Starting from the inside coated Downstream tubes can be subjected to overall forming degrees of up to 99.5% reduction in cross-section realize.
- the proposed method is particularly economical and flexibility. Due to the relatively low cost of galvanic Coating the front pipes and the quantities of finished pipes that can be produced from them the internally tinned prefabricated pipes can be manufactured particularly cost-effectively. in the A comparison to this leads to chemical tinning according to the known state of the art Technology with a final forming in a finished train at essential low degrees of deformation at significantly higher costs.
- Finished pipes with a grooved inner surface can also be made from the tinned downpipes produce, the longitudinal grooves formed during the last forming train become.
- the internally tinned finished pipes can also be used to manufacture fittings such as Sleeves, T-pieces, reducers or pipe bends can be used.
- the process is used to make soft, semi-hard and hard tinned Suitable for copper pipes.
- Tinning of the tube blanks with an electrodeposited tin layer thickness of up to 500 ⁇ m is no problem in practice.
- a pre-made internally tinned tube blank 85 x 14 as a preliminary tube is in a first reduction stage Formed on a cold pilger mill to a vocational size of 53 x 2.7.
- the Length of the rolled front pipe is 37 m, starting from the pipe blank 85 x 14 the degree of deformation is 86%.
- the rolled front tube is pulled using a flying mandrel within a drawing line in five further reduction or Drawing stages at drawing speeds of 80 to 130 m / min to a dimension of 17.5 x 0.9 drawn. During the drawing process takes place in a manner known per se internal and external lubrication of the front pipe.
- the drawn front tube 17.5 x 0.9 has a length of 330 m.
- the degree of forming, starting from the rolled tube 53 x 2.7 is 89%.
- the drawn front tube 17.5 x 0.9 is then with a Gas mixture consisting of 3% hydrogen and the rest nitrogen, purged and at a temperature above the recrystallization temperature of copper, at 450 ° C, annealed and on a finishing machine in a final reduction stage to the final finished size 15 x 0.93 with a drawing speed of 130 m / min drawn.
- the degree of deformation in the last drawing stage is 12%.
- the front pipe is lubricated on the outside.
- Extrusion is used to make copper pipes with a wall thickness of 5 mm and one Outside diameter of 89 mm manufactured, in lengths of 5 m each.
- the front pipes 89 x 5 are made in the same way as in Example 1 tinned internally, with a tin layer thickness of 50 ⁇ m.
- the piece weight an inner tinned down tube is approx. 60 kg.
- the inner tinned downpipes are on a conventional drawing machine by pulling on chain benches fixed dome in four reduction or drawing stages to the finished size 64 x 2 drawn.
- the drawing speeds are 20 to 80 m / min.
- the degree of deformation of the individual reduction or forming stages averages 25% per train.
- a finished pipe 64 x 2 with a length of 17 m obtained with a constant, constant tin layer thickness of 20 ⁇ m.
- the total degree of deformation based on the internally tinned front tube is 89 x 5 70.5%.
- the thickness of the tin layer was determined analogously to that in Example 1.
- the inner tinned tubes 53 x 2.7 are on a conventional drawing machine flying dome in seven reduction or drawing stages at drawing speeds from 80 to 130 m / min to the finished size 10 x 1.
- the degree of deformation per train is 35% on average.
- Copper pipes are made from an internally tinned downpipe 10 x 1 in a length of 75 m with a constant, constant tin layer thickness obtained from 18 ⁇ m. Starting from the tinned downpipe 53 x 2.7, the total degree of forming of the finished pipes is 93%.
- the thickness of the tin layer was determined analogously to that in Example 1.
- the present test results show that the internally tinned copper pipes meet the requirements of the Schupferrohr eV with regard to the tightness of the Sn layer, the layer thickness and the purity of the Sn layer and that the pipes produced according to the invention in water supply areas with a pH value of the water ⁇ 6, 5 and / or proportion of free carbonic acid, KB 8.4 > 1 mol / l can be used without hesitation.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Electroplating Methods And Accessories (AREA)
- Metal Extraction Processes (AREA)
- Chemically Coating (AREA)
Description
Beispiele | |||
1 Rohr 15 x 1 | 2 Rohr 64 x 2 | 3 Rohr 10 x 1 | |
Schichtdicke in µm | 18 | 20 | 18 |
Migration in µg/mm2 | < 1 (0,03) | < 1 (0,05) | < 1 (0,03) |
Reinheit der Sn-Schicht | 99,9 % Sn | 99,9 % Sn | 99,9 % Sn |
Claims (12)
- Verfahren zur Herstellung von Kupferrohren mit einer innenverzinnten Oberfläche, wobei zuerst die innere Oberfläche des Rohres verzinnt wird und anschließend das verzinnte Rohr zu einem Fertigrohr umgeformt wird, dadurch gekennzeichnet, daßa) ein gerades Vorrohr mit einer Länge bis zu 15 m und einer im wesentlichen konstanten Wanddicke von 2 bis 15 mm und einem maximalen Außendurchmesser bis zu 150 mm hergestellt wird,b) anschließend die Innenseite des Vorrohres durch elektrolytische Zerlegung einer Zinnsalzlösung mit einer Zinnschichtdicke von 50 bis 500 µm galvanisch beschichtet wird undc) abschließend das innenverzinnte Vorrohr in mehreren Reduktionsstufen zu Fertigrohren mit einer im wesentlichen konstanten Zinnschichtdicke von 2 bis 50 µm umgeformt wird, und bezogen auf die Ausgangslänge des Vorrohres Fertigrohre mit einer bis zu 200 mal größeren Länge hergestellt werden.
- Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß die Vorrohre eine Länge von 3 bis 6 m aufweisen.
- Verfahren nach einem der Ansprüche 1 oder 2, dadurch gekennzeichnet, daß die Vorrohre durch Strangpressen, Schrägwalzen, Gießen, Schweißen, Pilgern oder Ziehen hergestellt werden.
- Verfahren nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß während der Herstellung der Vorrohre die Rohre oberhalb der Rekristallisationstemperatur des Kupfers weichgeglüht werden.
- Verfahren nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß auf die Vorrohre eine Zinnschichtdicke von 50 bis 300 µm aufgetragen wird.
- Verfahren nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, daß bei der Umformung der innenverzinnten Vorrohre Umformgrade von 60 bis 99,5 % erreicht werden.
- Verfahren nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, daß die innenverzinnten Vorrohre in mehreren aufeinanderfolgenden Verfahrensstufen durch Kaltpilgern und/oder Ziehen mit fliegendem, halbfliegendem und/oder mit feststehendem Dorn umgeformt werden.
- Verfahren nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, daß aus einem innenverzinnten Vorrohr Fertigrohre unterschiedlicher Durchmesser und Wanddicken hergestellt werden.
- Verfahren nach einem der Ansprüche 1 bis 8, dadurch gekennzeichnet, daß das innenverzinnte Vorrohr vor einer der nachfolgenden Umformstufen oberhalb der Rekristallisationstemperatur des Kupfers in einem Temperaturbereich von 350 bis 550 °C wärmebehandelt wird.
- Verfahren nach Anspruch 9, dadurch gekennzeichnet, daß das Vorrohr vor der Wärmebehandlung mit Stickstoff oder einem Gasgemisch aus Stickstoff und Wasserstoff, mit einem Wasserstoffanteil von 1 bis 4 Vol.-% gespült wird.
- Verfahren nach einem der Ansprüche 9 oder 10, dadurch gekennzeichnet, daß das wärmebehandelte Vorrohr abschließend in einer Stufe zu einem Fertigrohr umgeformt wird, wobei ausgehend von dem wärmebehandelten Vorrohr Umformgrade von 2 bis 30 % eingehalten werden.
- Verfahren nach einem der Ansprüche 1 bis 11, dadurch gekennzeichnet, daß aus den innenverzinnten Vorrohren Fertigrohre mit einer in Längsrichtung gerillten Innenfläche hergestellt werden.
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT98112609T ATE248665T1 (de) | 1998-07-08 | 1998-07-08 | Verfahren zur herstellung von kupferrohren |
DE59809499T DE59809499D1 (de) | 1998-07-08 | 1998-07-08 | Verfahren zur Herstellung von Kupferrohren |
EP98112609A EP0979688B1 (de) | 1998-07-08 | 1998-07-08 | Verfahren zur Herstellung von Kupferrohren |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP98112609A EP0979688B1 (de) | 1998-07-08 | 1998-07-08 | Verfahren zur Herstellung von Kupferrohren |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0979688A1 EP0979688A1 (de) | 2000-02-16 |
EP0979688B1 true EP0979688B1 (de) | 2003-09-03 |
Family
ID=8232237
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP98112609A Expired - Lifetime EP0979688B1 (de) | 1998-07-08 | 1998-07-08 | Verfahren zur Herstellung von Kupferrohren |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP0979688B1 (de) |
AT (1) | ATE248665T1 (de) |
DE (1) | DE59809499D1 (de) |
Cited By (2)
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CN100369711C (zh) * | 2005-05-31 | 2008-02-20 | 江阴市华西铜业有限公司 | 高性能抗氧化环保铜排的制造方法 |
CN101249522B (zh) * | 2007-12-21 | 2010-09-01 | 江苏金圣铜业科技有限公司 | 椭圆紫铜管的制造方法 |
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CN103317305B (zh) * | 2013-06-08 | 2015-08-12 | 宝鸡市天瑞有色金属材料有限责任公司 | 小口径镍基合金无缝方管的制备方法 |
CN105562456B (zh) * | 2015-12-03 | 2018-01-09 | 中铝洛阳铜业有限公司 | 一种紫铜方管材料制备工艺 |
CN107716588A (zh) * | 2017-10-31 | 2018-02-23 | 中铝洛阳铜加工有限公司 | 一种保持大直径薄壁白铜管退火圆度的生产工艺 |
CN109576703A (zh) * | 2018-12-29 | 2019-04-05 | 烟台南山学院 | 一种非标铜管的手工镀锡方法 |
CN113106513A (zh) * | 2021-03-18 | 2021-07-13 | 中科金龙金属材料开发有限公司 | 一种耐腐蚀铜管及其加工方法 |
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Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4838063A (en) * | 1984-09-10 | 1989-06-13 | Hitachi Cable, Ltd. | Method for manufacturing metallic tube members |
DE4321244C2 (de) * | 1993-06-25 | 2001-11-15 | Km Europa Metal Ag | Installationsrohr aus Kupfer mit Zinnoxid-Innenschicht und Verfahren zur Beschichtung desgleichen |
DE19501274A1 (de) * | 1995-01-18 | 1996-07-25 | Km Europa Metal Ag | Verfahren zur Herstellung eines Installationsrohrs aus Kupfer |
DE19581642C2 (de) * | 1995-03-16 | 2002-08-01 | Kobe Steel Ltd | Kalt- und Heißwasserzuführungs-Kupferlegierungsrohr mit einem Schutzfilm auf der inneren Oberfläche, Verfahren zu seiner Herstellung sowie ein Heißwasserzuführungs-Wärmeaustauscher |
GR1003280B (el) * | 1998-01-22 | 1999-12-06 | v 9 ��@ 0#0 6f@*t 5�*5 @*�*:*� s5 s@6*t 99#0 | 6* θ θs@ t s * fs@s#9f0 @* t st sfs@ Νθ@v 9 θ@6*@*s#t*υ5 f@*Ν5u 0*5 @*Ν5 ss5t*υ#6*0f@ 5 @f9* tυθ9 s*#s |
DE19814919A1 (de) * | 1998-04-03 | 1999-10-07 | Gramm Gmbh & Co Kg | Verfahren zur Herstellung von Rohren mit Innen- und/oder Außenbeschichtung |
-
1998
- 1998-07-08 EP EP98112609A patent/EP0979688B1/de not_active Expired - Lifetime
- 1998-07-08 DE DE59809499T patent/DE59809499D1/de not_active Expired - Fee Related
- 1998-07-08 AT AT98112609T patent/ATE248665T1/de not_active IP Right Cessation
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103722040A (zh) * | 2013-11-18 | 2014-04-16 | 青岛盛嘉信息科技有限公司 | 一种铜板带的生产工艺方法 |
CN106903183A (zh) * | 2017-03-08 | 2017-06-30 | 常熟中佳新材料有限公司 | 射频电缆用无氧铜管的制造系统及方法 |
Also Published As
Publication number | Publication date |
---|---|
ATE248665T1 (de) | 2003-09-15 |
DE59809499D1 (de) | 2003-10-09 |
EP0979688A1 (de) | 2000-02-16 |
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