EP0962267A2 - Verfahren zur Herstellung von Verbund-Rohren aus Metall sowie Verbundrohr und dessen Verwendung - Google Patents
Verfahren zur Herstellung von Verbund-Rohren aus Metall sowie Verbundrohr und dessen Verwendung Download PDFInfo
- Publication number
- EP0962267A2 EP0962267A2 EP99109045A EP99109045A EP0962267A2 EP 0962267 A2 EP0962267 A2 EP 0962267A2 EP 99109045 A EP99109045 A EP 99109045A EP 99109045 A EP99109045 A EP 99109045A EP 0962267 A2 EP0962267 A2 EP 0962267A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- composite pipe
- tube
- metal
- tubular insert
- range
- 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.)
- Withdrawn
Links
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Classifications
-
- 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
- B21C37/15—Making tubes of special shape; Making tube fittings
- B21C37/154—Making multi-wall tubes
-
- 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
- B21C1/24—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 by means of mandrels
-
- 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
-
- 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
- B21C37/08—Making tubes with welded or soldered seams
- B21C37/09—Making tubes with welded or soldered seams of coated strip material ; Making multi-wall tubes
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49826—Assembling or joining
- Y10T29/49885—Assembling or joining with coating before or during assembling
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49826—Assembling or joining
- Y10T29/49908—Joining by deforming
- Y10T29/49925—Inward deformation of aperture or hollow body wall
- Y10T29/49927—Hollow body is axially joined cup or tube
Definitions
- the invention relates to a method for producing a composite pipe made of metal, the one having a tubular insert encased by an outer seamless tube, insert and outer tube telescopically inserted and then pressed together radially by pulling be, as well as a method for producing a composite pipe made of metal, which by Pulling is compressed radially; the invention further relates to those produced by the processes Composite pipes and the use of such composite pipes.
- EP 0 445 904 A2 describes a method for producing a thick-walled metal High-pressure pipe is known, in which two different cross-sectional dimensions Front tubes telescoped and then radially compressed by cold drawing become; the forming is preferably carried out by drawing with an internal tool, in which the wall thickness reduction, in particular of the inner tube, has a high proportion on the respective total deformation, with the pre-tubes in the work-hardened state can be pushed into one another with little play and the double-wall pipe thus produced initially heat treated and then cold drawn at least once; after this The final cold draft is followed by a final heat treatment, the one after the first heat treatment of the double wall pipe produced following the first cold drawing as a pulling with an internal tool is carried out.
- a device for producing tubes from sheet metal strips in which the sheet is drawn through a die through a cylindrical mandrel; the The die is designed such that the sheet - starting from its longitudinal center line - progressively is bent to the diameter of the mandrel.
- DE 36 30 625 C2 describes a method for producing an interior with a Zinc-coated pipe known for use in the refrigeration and automotive industries, in which a sheet metal strip is galvanized on one side and then to a slotted tube internal zinc layer is deformed; then this slotted tube is used of direct current or low frequency current between a welding roller and a rotating one If the welding zone is sufficiently flushed, the welding electrode is sealed with inert gas.
- the object of the invention is to produce composite pipes with a small diameter of for example, 2 to 10 mm and a length of 0.5 to 6 m; additionally should the tubes have a reflective inner surface, for example for guiding the radiation of infrared radiation by reflecting part of the radiation can; In addition, a composite pipe with increased stability and seamlessly closed Outer jacket can be specified.
- the tubular insert becomes the first step formed into an insert tube so that its tubular jacket is almost closed Has a gap along the longitudinal axis of the pipe; here it proves to be advantageous that due to the almost closed gap practically no loss of attenuation in the transmission of Radiation occurs by means of reflection on the coating of the inside of the pipe, if used intended for temperature measurement according to DE 36 05 737 is.
- the first step a metal strip with a thickness in the range of 0.1 to 0.8 mm and one Width in the range of 6 to 30 mm bent into an insert tube, the second step being the tubular insert with a length in the range of 0.5 m to 6 m into the already as blank prefabricated, seamless outer tube is inserted; the inside diameter of the outside The pipe is slightly larger than the outside diameter of the pipe to be inserted Insert tube.
- a metal strip is used in the process, which has a coating on at least one side of the strip made of precious metal - preferably gold - with the band in the pulling device is carried out that the coated hinge side the later inner surface of the to be created forms tubular insert.
- the coating can be done by electroplating, Roll cladding or sputtering - preferably on one side - can be applied.
- the diameter is both the tubular insert and the outer jacket tube by 5 to 50 percent - preferably by 10 to 30 percent - reduced; due to the radial pressure, an optimal Achieve the surface of the precious metal or gold coating of the insert tube.
- the task is for a second method of manufacturing a composite pipe from metal, which is radially compressed by pulling, solved in that a metal band with at least a strip side coated with precious metal in a drawing die of a drawing device inserted with a fixed internal mandrel, with one end in one opposite the drawing device movable slide and clamped by moving the slide to one Compound pipe is bent with an almost closed longitudinal gap, the width of the band corresponds at least approximately to the average circumference of the tubular insert and the metal strip is guided in the pulling device so that the coated side of the strip is the inner surface of the composite pipe to be created.
- too Coating of the metal strip is applied by electroplating, roll cladding or sputtering become.
- a metal strip with a thickness is used in the range of 0.1 to 0.8 mm and a width in the range of 6 to 30 mm to the composite pipe bent; the composite pipe is preferably drawn up to a length of 6 m.
- the second method proves to be advantageous in terms of good surface quality Inside of the pipe and on the cost-effective production of the composite pipe.
- the task is for a composite pipe consisting of an insert tube and an outer, seamless Jacket tube which by a drawing process according to the first method (according to claims 1 to 5) are radially compressed into a single composite tube, solved by the fact that the insert tube has an almost closed gap running along the tube axis.
- the inside diameter is in the range from 1.5 to 9 mm and its outer diameter in the range from 2 to 10 mm; the inner Coating with precious metal or gold has a thickness of at least 0.1 ⁇ m, whereby the optical quality of the reflective coating by the one carried out in the third step Drawing process with radial pressure can be improved considerably.
- the tubular Inlay insert tube
- non-ferrous metals brass or copper
- precious metal or Stainless steel proved to be particularly suitable
- Non-ferrous metals (copper or brass) or stainless steel are particularly suitable are relatively inexpensive materials.
- the embodiment of a composite pipe manufactured according to claims 6 to 9 is proportional inexpensive to manufacture; it is in particular for guiding radiation by means of reflection suitable on the inner surface of the composite pipe.
- the task becomes with regard to the use of the composite pipe for the transmission of radiation along the tube axis by reflection of at least part of the radiation on the inner Surface of the composite pipe released; in a preferred use the composite pipe used for the transfer of heat radiation for temperature measurement as it is known from DE 36 05 737 A1.
- a major advantage of the coating containing precious metal on the inside of the composite pipe can be seen in the constant, temperature-independent reflection property.
- the pulling device 1 partially shown has one along the pulling axis 3 arranged mandrel 4, which by means of mandrel rod 5 and mandrel holder 6 in the drawing device 1 is positioned stationary;
- mandrel 4 which by means of mandrel rod 5 and mandrel holder 6 in the drawing device 1 is positioned stationary;
- the inlet area of the metal strip 2 there is a strip guide 11 provided, in the direction of movement of the metal strip indicated by arrow 16 2 is followed by the conically shaped inlet area 7 of the drawing die 8, by means of the die holder 9, 10 is positioned stationary on the pulling device 1; with the help of mandrel 4 and that surrounds it at a distance (distance is matched to the thickness of the metal strip) Pulling die 8, the metal strip 2 is bent into a tube or tubular insert 12.
- the part of the preliminary material that has already been designed as a tubular insert is on its front end 13 clamped in the collet 14 of a slide 15.
- Drawing carriage 15 extends along the drawing axis 3.
- Metal strip 2 is located as a solid or coated primary material in one for a variety of drawing processes sufficient quantity on a supply spool 17, of which it is produced in batches (corresponding to the tube length) is handled.
- the slide is 15 advanced so far that there is a length range between the drawing slide 15 and the die 8 from approx. 0.5 m to 6 m for the blank of the insert tube or the tubular insert 12 results.
- Figure 1a is for the sake of a better overview in a compressed along the longitudinal axis Form shown, so that this figure is by no means to be regarded as to scale; the after Existing tubular insert 12 or insert tube 12 leaving the die 8 is in cross section shown along the section plane AA in Figure 1b, this figure on a tubular Insert 12 is directed with applied surface coating 19; the almost closed Longitudinal gap is designated by number 21; is preferred as a surface coating Gold provided, for example, for optimal reflection of the tubular inlay or to allow radiation penetrating into the later composite pipe, provided the composite pipe is used for pyrometric temperature measurement.
- FIG. 1b is also suitable as a composite pipe without an additional outer pipe Casing, the manufacture of which is described in claims 7 to 9; such an arrangement is particularly suitable for pyrometric temperature measurement.
- Such an uncoated insert tube can be used as a raw material composite pipe to be created with closed outer jacket for the transmission of a Medium, for example gas or used as a channel for a cooling medium; as beneficial is the use of a material that is resistant to the respective medium to watch.
- FIG. 2a again shows drawing device 1 with drawing mandrel 4, mandrel bar 5 and mandrel holder 6, drawing mandrel 4 from a die 8 in die holder 9 at a distance (distance is on the Wall thicknesses or final dimensions of the composite pipe to be created) is.
- the raw material is now inserted into an outer seamless jacket tube 20 Insert tube 12 is provided, both tubes with their front ends in the collet 14 of the slide 15 are clamped.
- the surface coating is according to FIG. 2b with reference number 19 featured.
- Figure 2c shows a longitudinal section of the finished composite pipe; according to Figure 2c occurs direct Radiation 25 along the tube axis 23, which passes through the composite tube 22 without reflection; Scattered radiation 26 (as described, for example, on the basis of DE 36 05 737 A1 on the other hand, occurs outside the tube axis 23 and is repeated several times on the surface coating 19 reflected within the tube and occurs at the tube end 24 in a not shown here Detector device; A pyrometer, for example, can be used as the detector device suitable for non-contact temperature measurement.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Metal Extraction Processes (AREA)
- Laminated Bodies (AREA)
- Radiation Pyrometers (AREA)
Abstract
Description
Claims (19)
- Verfahren zur Herstellung eines Verbund-Rohres aus Metall, das eine von einem äußeren, nahtlosen Rohr ummantelte rohrartige Einlage aufweist, wobei Einlage und äußeres Rohr teleskopartig ineinandergesteckt und dann durch Ziehen radial zusammengepreßt werden, dadurch gekennzeichnet, daß in einem ersten Schritt ein Metall-Band, das auf wenigstens einer Bandseite eine Beschichtung aus Edelmetal aufweist, so in der Ziehvorrichtung mit feststehendem Innendorn geführt wird, daß die beschichtete Bandseite die Innenfläche der zu erstellenden rohrförmigen Einlage bildet, wobei das Metallband mit einem Ende in einen gegenüber der Ziehvorrichtung beweglichen Ziehschlitten eingespannt und durch Bewegung des Ziehschlittens zu der rohrartigen Einlage gebogen wird, wobei die Breite des Bandes zumindest näherungsweise dem mittleren Umfang der rohrartigen Einlage entspricht,daß in einem zweiten Schritt, der als rohrförmige Einlage geformte Rohling in das äußere Rohr eingeschoben wird unddaß in einem dritten Schritt die ineinander geschobenen Rohre zusammen mit jeweils einem Ende in den Ziehschlitten eingespannt werden und mittels Ziehmatrize mit feststehendem Innendorn gemeinsam auf Endmaß gezogen werden, wobei durch radiales Zusammenpressen äußeres Rohr und rohrartige Einlage über Preß-Sitz miteinander verbunden werden.
- Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß im ersten Schritt die rohrförmige Einlage als Einlage-Rohr geformt wird, dessen Rohr-Mantel einen nahezu geschlossenen Spalt entlang der Rohr-Längs-Achse aufweist.
- Verfahren nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß im ersten Schritt ein Metall-Band mit einer Dicke im Bereich von 0,1 bis 0,8 mm und einer Breite im Bereich von 6 bis 30 mm zu einem Einlage-Rohr gebogen wird.
- Verfahren nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß im zweiten Schritt die rohrförmige Einlage mit einer Länge im Bereich von 0,5 m bis 6 m in das äußere Rohr eingeschoben wird.
- Verfahren nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß im dritten Schritt der Durchmesser sowohl der rohrartigen Einlage als auch des Mantel-Rohrs um 5 bis 50 % verringert werden.
- Verfahren zur Herstellung eines Verbund-Rohres aus Metall, das durch Ziehen radial zusammengepreßt wird, dadurch gekennzeichnet, daß ein Metall-Band mit einer mit Edelmetall beschichteten Bandseite in eine Ziehmatrize einer Ziehvorrichtung mit feststehendem Innendorn eingebracht, mit einem Ende in einen gegenüber der Ziehvorrichtung beweglichen Ziehschlitten eingespannt und durch Bewegung des Ziehschlittens zu einem Verbund-Rohr mit nahezu geschlossenem Längsspalt gebogen wird, wobei die Breite des Bandes zumindest näherungsweise dem mittleren Umfang der rohrartigen Einlage entspricht und das Metall-Band so in der Ziehvorrichtung geführt wird, daß die beschichtete Bandseite die Innenfläche des zu erstellenden Verbund-Rohrs bildet.
- Verfahren nach Anspruch 6, dadurch gekennzeichnet, daß ein Metall-Band mit einer Dicke im Bereich von 0,1 bis 0,8 mm und einer Breite im Bereich von 6 bis 30 mm zu dem Verbund-Rohr gebogen wird.
- Verfahren nach Anspruch 6 oder 7, dadurch gekennzeichnet, daß das Verbund-Rohr mit einer Länge bis zu 6 m gezogen wird.
- Verfahren nach einem der Ansprüche 1 bis 8, dadurch gekennzeichnet, daß der Ziehvorgang oder die Ziehvorgänge bei Raumtemperatur erfolgen.
- Verbundrohr hergestellt nach einem der Ansprüche 1 bis 9, dadurch gekennzeichnet, daß die innere Oberfläche des Verbundrohres mit einer Beschichtung aus Edelmetall versehen ist.
- Verbundrohr nach Anspruch 10, dadurch gekennzeichnet, daß die Beschichtung des Verbundrohres aus Gold besteht.
- Verbundrohr nach Anspruch 10 oder 11, dadurch gekennzeichnet, daß die Beschichtung eine Dicke im Bereich von mindestens 0,1 µm aufweist.
- Verbundrohr hergestellt nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, daß das Einlage-Rohr einen längs der Rohrachse verlaufenden nahezu geschlossenen Spalt aufweist.
- Verbundrohr nach Anspruch 13, dadurch gekennzeichnet, daß sein Innendurchmesser im Bereich von 1,5 bis 9 mm und sein äußerer Durchmesser im Bereich von 2 bis 10 mm liegt.
- Verbundrohr nach Anspruch 13 oder 14, dadurch gekennzeichnet, daß als Werkstoff für die rohrförmige Einlage Buntmetall, insbesondere Messing oder Kupfer, Edelmetall oder Edelstahl eingesetzt wird.
- Verbundrohr nach einem der Ansprüche 13 bis 15, dadurch gekennzeichnet, daß als Werkstoff für das äußere Rohr Edelstahl oder Buntmetall, insbesondere Kupfer oder Messing, eingesetzt wird.
- Verbundrohr hergestellt nach einem der Ansprüche 6 bis 9, dadurch gekennzeichnet, daß sein Innendurchmesser im Bereich von 1,5 bis 9 mm und sein äußerer Durchmesser im Bereich von 2 bis 10 mm liegt.
- Verwendung eines Verbundrohres nach einem der Ansprüche 10 bis 17 zur Übertragung von Strahlung entlang der Rohrachse durch Reflexion wenigstens eines Teils der Strahlung an der inneren Oberfläche des Verbundrohres.
- Verwendung eines Verbundrohres nach Anspruch 18 zur Übertragung von Infrarot-Strahlung für Temperaturmessung.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19823832A DE19823832A1 (de) | 1998-05-28 | 1998-05-28 | Verfahren zur Herstellung von Verbund-Rohren aus Metall sowie Verbundrohr und dessen Verwendung |
DE19823832 | 1998-05-28 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0962267A2 true EP0962267A2 (de) | 1999-12-08 |
EP0962267A3 EP0962267A3 (de) | 2002-01-02 |
Family
ID=7869160
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP99109045A Withdrawn EP0962267A3 (de) | 1998-05-28 | 1999-05-07 | Verfahren zur Herstellung von Verbund-Rohren aus Metall sowie Verbundrohr und dessen Verwendung |
Country Status (4)
Country | Link |
---|---|
US (1) | US20010042297A1 (de) |
EP (1) | EP0962267A3 (de) |
JP (1) | JP2000000610A (de) |
DE (1) | DE19823832A1 (de) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101985132A (zh) * | 2010-10-15 | 2011-03-16 | 中冶东方工程技术有限公司 | 一种热连轧无缝钢管生产方法 |
CN107262613A (zh) * | 2017-08-04 | 2017-10-20 | 缪保民 | 带不锈钢套的高强悬浮式单体液压支柱及套层复合方法 |
EP3530314A1 (de) * | 2018-02-21 | 2019-08-28 | Heraeus Deutschland GmbH & Co. KG | Herstellungsverfahren für eine ringelektrode |
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Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102004041430A1 (de) * | 2004-08-27 | 2006-03-09 | Daimlerchrysler Ag | Nockenwellenversteller |
US9574686B2 (en) | 2011-06-06 | 2017-02-21 | Essel Propack Ltd. | Invisible seam laminated article and process of manufacture |
DE102012019554A1 (de) * | 2012-10-05 | 2014-04-10 | Kme Germany Gmbh & Co. Kg | Bootsanleger |
CN106969837B (zh) * | 2017-04-25 | 2018-06-19 | 北京航空航天大学 | 一种感应熔炼用多级结构红外测温装置与测温方法 |
CN106989823B (zh) * | 2017-04-25 | 2018-06-19 | 北京航空航天大学 | 一种感应熔炼用多级变径红外测温装置及测温方法 |
CN107931341A (zh) * | 2017-11-24 | 2018-04-20 | 哈尔滨工业大学 | 薄壁微细管超声振动辅助拉拔成形装置及方法 |
CN115921560B (zh) * | 2022-12-06 | 2023-11-28 | 江苏捷尔特精密管业有限公司 | 一种可任意调整缩口长度的冷拔打尖头模具 |
CN117066339B (zh) * | 2023-07-04 | 2024-05-17 | 青岛三花锦利丰机械有限公司 | 一种空调制冷不锈钢管拉伸成型装置 |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE597120C (de) | 1934-05-17 | F W Cremers | Vorrichtung zur Herstellung von Rohren aus Blechstreifen | |
DE3605737A1 (de) | 1986-02-22 | 1987-08-27 | Battelle Institut E V | Verfahren und vorrichtung zur beruehrungslosen temperaturmessung |
DE3630625C2 (de) | 1986-09-09 | 1988-07-28 | Benteler Ag, 4790 Paderborn, De | |
EP0445904A2 (de) | 1990-03-08 | 1991-09-11 | MANNESMANN Aktiengesellschaft | Verfahren zur Herstellung eines metallischen, dickwandigen Hochdruckrohres |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1441459A (en) * | 1921-02-04 | 1923-01-09 | Philadelphia Bronze Bearing & | Composite tube and method of making the same |
US1839964A (en) * | 1925-01-28 | 1932-01-05 | Steel And Tubes Inc | Process for making bimetallic tubes |
US2219434A (en) * | 1939-02-25 | 1940-10-29 | H N White Company | Musical instrument |
US4125924A (en) * | 1977-04-04 | 1978-11-21 | United States Steel Corporation | Method of producing composite metal pipe |
JP2826337B2 (ja) * | 1988-04-12 | 1998-11-18 | シチズン時計株式会社 | 放射体温計 |
DE4130524C1 (de) * | 1991-09-13 | 1993-01-07 | W.C. Heraeus Gmbh, 6450 Hanau, De | |
DE29501672U1 (de) * | 1995-02-02 | 1995-08-03 | Maier, Andreas, Dipl.-Ing. (FH), 85416 Langenbach | Handmeßgerät, zur kontaktlosen, gleichzeitigen Messung von Temperatur und Puls im Gehörgang des Menschen, für den klinischen Pflegedienst, unter Verwendung der Infrarot-Meßtechnik |
-
1998
- 1998-05-28 DE DE19823832A patent/DE19823832A1/de not_active Withdrawn
-
1999
- 1999-05-07 EP EP99109045A patent/EP0962267A3/de not_active Withdrawn
- 1999-05-13 US US09/311,328 patent/US20010042297A1/en not_active Abandoned
- 1999-05-26 JP JP11146913A patent/JP2000000610A/ja active Pending
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE597120C (de) | 1934-05-17 | F W Cremers | Vorrichtung zur Herstellung von Rohren aus Blechstreifen | |
DE3605737A1 (de) | 1986-02-22 | 1987-08-27 | Battelle Institut E V | Verfahren und vorrichtung zur beruehrungslosen temperaturmessung |
DE3630625C2 (de) | 1986-09-09 | 1988-07-28 | Benteler Ag, 4790 Paderborn, De | |
EP0445904A2 (de) | 1990-03-08 | 1991-09-11 | MANNESMANN Aktiengesellschaft | Verfahren zur Herstellung eines metallischen, dickwandigen Hochdruckrohres |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101985132A (zh) * | 2010-10-15 | 2011-03-16 | 中冶东方工程技术有限公司 | 一种热连轧无缝钢管生产方法 |
CN101985132B (zh) * | 2010-10-15 | 2013-06-26 | 中冶东方工程技术有限公司 | 一种热连轧无缝钢管生产方法 |
CN107262613A (zh) * | 2017-08-04 | 2017-10-20 | 缪保民 | 带不锈钢套的高强悬浮式单体液压支柱及套层复合方法 |
CN107262613B (zh) * | 2017-08-04 | 2019-06-11 | 缪保民 | 带不锈钢套的高强悬浮式单体液压支柱及套层复合方法 |
EP3530314A1 (de) * | 2018-02-21 | 2019-08-28 | Heraeus Deutschland GmbH & Co. KG | Herstellungsverfahren für eine ringelektrode |
US10933233B2 (en) | 2018-02-21 | 2021-03-02 | Heraeus Deutschland GmbH & Co. KG | Production method for a ring electrode |
Also Published As
Publication number | Publication date |
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DE19823832A1 (de) | 1999-12-09 |
JP2000000610A (ja) | 2000-01-07 |
US20010042297A1 (en) | 2001-11-22 |
EP0962267A3 (de) | 2002-01-02 |
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