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DE1089713B - Process for the production of an endless belt in the continuous production of welded pipes by welding pre-parts together - Google Patents

Process for the production of an endless belt in the continuous production of welded pipes by welding pre-parts together

Info

Publication number
DE1089713B
DE1089713B DEP16057D DEP0016057D DE1089713B DE 1089713 B DE1089713 B DE 1089713B DE P16057 D DEP16057 D DE P16057D DE P0016057 D DEP0016057 D DE P0016057D DE 1089713 B DE1089713 B DE 1089713B
Authority
DE
Germany
Prior art keywords
strand
announced
production
thickness
endless belt
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.)
Pending
Application number
DEP16057D
Other languages
German (de)
Inventor
Dipl-Ing Dr-Ing Erich Hoermann
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Phoenix Rheinrohr AG
Original Assignee
Phoenix Rheinrohr AG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Phoenix Rheinrohr AG filed Critical Phoenix Rheinrohr AG
Priority to DEP16057D priority Critical patent/DE1089713B/en
Priority to GB12282/57A priority patent/GB831285A/en
Publication of DE1089713B publication Critical patent/DE1089713B/en
Pending legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21CMANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C37/00Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
    • B21C37/06Manufacture 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
    • B21C37/08Making tubes with welded or soldered seams
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21CMANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C37/00Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
    • B21C37/06Manufacture 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
    • B21C37/08Making tubes with welded or soldered seams
    • B21C37/083Supply, or operations combined with supply, of strip material

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Metal Rolling (AREA)

Description

der Wandstärke des Fertigrohrs gebildet, dann auf 30 weitgehend vermieden.
1000° C erwärmt und dann unter Auswalzen zum Die Erfindung wird an Hand der Zeichnung erBand in einem Planetenwalzwerk auf den zehnten bis läutert: Brammen 1 von der Größe von etwa 300-50-zwanzigsten Teil seiner Dicke reduziert wird. 10000 mm werden zu einem Strang 2 zusammenge-
formed the wall thickness of the finished pipe, then largely avoided to 30.
1000 ° C heated and then with rolling for The invention is based on the drawing erBand in a planetary rolling mill to the tenth to refined: slabs 1 of the size of about 300-50-twentieth part of its thickness is reduced. 10000 mm are combined to form a line 2

Von dem Bekannten unterscheidet sich das bean- schweißt; dieser Strang wird kontinuierlich in einen spruchte Verfahren unter anderem dadurch, daß der 35 Durchlaufofen 3 eingeführt und darin so erwärmt, daß sehr dicke Ausgangsstrang in nur einem einzigen der Strang 2 mit etwa 1000° C austritt. Hinter dem Walzstich auf die gegenüber der Fertigrohrwand- Ofen befindet sich eine Anlage 4, durch die der Strang2 stärke etwas größere Rohrwandstärke gebracht wird. mittels Preßwasser entzundert wird. Anschließend Ein weiterer wesentlicher Unterschied gegenüber dem * durchläuft der Strang ein Planetenwalzwerk 5, wo-Bekannten liegt auch darin, daß der Strang auf nur 40 durch er zu einem Band von etwa 300-3 bis 5 mm etwa 1000° C erwärmt wird und hierfür eine einmalige heruntergewalzt wird. Dabei erwärmt sich das mit Erwärmung im Ofen auf etwa 1000° C genügt, da die etwa 980° C in das Planetenwalzwerk eintretende Verformung des Stranges zum Band im Planeten- Material um etwa 80° C.The welded differs from the familiar; this strand becomes continuous into one Claimed method, inter alia, in that the continuous furnace 3 is introduced and heated therein in such a way that very thick starting strand in just a single strand 2 exits at about 1000 ° C. Behind the Rolling pass on the opposite of the finished pipe wall furnace is a system 4, through which the strand2 strength slightly greater pipe wall thickness is brought. is descaled by means of press water. Afterward Another essential difference compared to the * the strand goes through a planetary rolling mill 5, where-known also lies in the fact that the strand on only 40 through it to a tape of about 300-3 to 5 mm about 1000 ° C is heated and for this a one-time is rolled down. This heats up with it Heating in the furnace to around 1000 ° C is sufficient as the approximately 980 ° C entering the planetary rolling mill Deformation of the strand to the ribbon in the planetary material by about 80 ° C.

walzwerk erfolgt und wegen der hohen Äbstreck- Nur zur weiteren Erläuterung der Zeichnung seirolling mill takes place and because of the high level of straightening. Only for further explanation of the drawing

geschwindigkeit bei einer wesentlich niedrigeren Aus- 45 darauf hingewiesen, daß das so erzeugte Band 2' dann gangstemperatur als in den anderen bekannten Band- ein Gerät 6 durchläuft, in dem die Oberfläche des Walzwerken möglich ist. Dies zeigt die — an sich be- Bandes geglättet und gegebenenfalls das Band besäumt kannte ·—· Tatsache, daß infolge der starken Quer- wird; es durchlauft dann eine Induktionsvorrichtung 7, schnittsverminderung im Planetenwalzwerk in einem durch welche die Bandkanten in einer Breite von voreinzigen Stich die Bandtemperatur um etwa 8O0C 50 zugsweise höchstens wenigen Millimetern auf Schweißerhöht wird. Für das Schweißen des Rohres sind da- temperatur gebracht werden, und unmittelbar darauf her nur noch in an sich bekannter Weise die Band- ein Rohrschweißwerk, durch dessen Walzenpaar 8 kanten zu erwärmen. das Band 2' in Rohrform gebracht und durch dessenspeed at a significantly lower output 45 indicates that the strip 2 'produced in this way then passes through the starting temperature than in the other known strip - a device 6 in which the surface of the rolling mill is possible. This shows the fact that - as a matter of fact, the band has been smoothed and if necessary the band has been trimmed · - · the fact that as a result of the strong transverse is; then it passes through an induction apparatus 7-sectional reduction in the planetary mill in a through which the strip temperature is preferably not more than the strip edges in a width of stitch voreinzigen about 8O 0 C 50 a few millimeters on Schweißerhöht. For the welding of the pipe, the temperature has to be brought, and immediately afterwards only the strip welding works have to be heated in a manner known per se, with its roller pair 8 edges. the band 2 'brought into a tubular shape and through its

Es ergibt sich daher gegenüber dem bisher üblichen Walzenpaar 9 die Bandkanten zum Rohr 2" ver-Therefore, compared to the previously usual pair of rollers 9, the strip edges to the tube 2 ″ are

009 609/148009 609/148

schweißt werden. Das Rohr durchläuft anschließend einen. Ofen 10, vorzugsweise einen Elektroinduktiönsofen, durch den das Rohr, dessen Temperatur inzwischen abgesunken ist, wieder auf etwa 950 bis 1000·° C erwärmt wird; dann tritt es in ein Streckreduziei·- walzwerk Il ein und verläßt dieses als fertiges Rohr 2'".be welded. The pipe then passes through one. Furnace 10, preferably an electric induction furnace, through which the pipe, the temperature of which has meanwhile dropped, back to about 950 to 1000 ° C is heated; then it goes into a stretch reduction - rolling mill II and leaves this as a finished tube 2 '".

Claims (1)

PATENTANSPRUCH:PATENT CLAIM: Verfahren zum Herstellen eines endlosen Bandes beim kontinuierlichen Herstellen geschweißter Rohre durch Aneinanderschweiß en von Vor stücken, z. B. Brammen, zu einem Strang, Aufheizen des Stranges in einem Ofen und Auswalzen desselben in einem Walzwerk zu einem Band von einer gegenüber der Fertigrohrwandstärke größeren Dicke, dadurch gekennzeichnet, daß dieser Strang durch Aneinanderschweißen von Brammen erzeugt wird, die eine Dicke von der zwanzig·- bis fünfzigfachen Fertigrohrwandstärke aufweisen, dieser Strang sodann auf 1000° C erwärmt und in einem Planetenwalzwerk auf den zehnten bis zwanzigsten Teil seiner Dicke zum Band ausgewalzt wird.Method for producing an endless belt in the continuous production of welded pipes by welding together s of pieces before, z. B. slabs, into a strand, heating the strand in a furnace and rolling it out in a rolling mill to form a strip of a thickness greater than that of the finished pipe wall thickness, characterized in that this strand is produced by welding slabs together which have a thickness of twenty - have up to fifty times the finished pipe wall thickness, this strand is then heated to 1000 ° C and rolled into a strip in a planetary rolling mill to the tenth to twentieth part of its thickness. In Betracht gezogene Druckschriften:Considered publications: Deutsche Patentschriften Nr. 920 362, 918 021;German Patent Nos. 920 362, 918 021; deutsche Patentanmeldungen K 76961 b/7b (bekanntgemacht am 22.10.1953, R7676Ib/7b (bekanntgemacht am 11.12.1952), S19555Ib/7a (bekanntgemacht am 9. 9. 1954), R 7968 Ib/7b (bekanntgemacht am 11.3.1954);German patent applications K 76961 b / 7b (announced on 10/22/1953, R7676Ib / 7b (announced on December 11, 1952), S19555Ib / 7a (announced on 9. 9. 1954), R 7968 Ib / 7b (announced on March 11, 1954); österreichische Patentschriften Nr. 183 725, 54 839; schweizerische Patentschrift Nr. 177 660;Austrian Patent Nos. 183 725, 54 839; Swiss Patent No. 177 660; französische Patentschrift Nr. 870 750;French Patent No. 870 750; Zeitschrift »Stahl und Eisen«, 1954, S. 295;Journal "Stahl und Eisen", 1954, p. 295; »VDI-Zeitschrift«, 1938, S. 1489."VDI-Zeitschrift", 1938, p. 1489. Hierzu 1 Blatt Zeichnungen 1 sheet of drawings
DEP16057D 1956-04-13 1956-04-13 Process for the production of an endless belt in the continuous production of welded pipes by welding pre-parts together Pending DE1089713B (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DEP16057D DE1089713B (en) 1956-04-13 1956-04-13 Process for the production of an endless belt in the continuous production of welded pipes by welding pre-parts together
GB12282/57A GB831285A (en) 1956-04-13 1957-04-15 Process for the continuous production of longitudinally welded steel tubes

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEP16057D DE1089713B (en) 1956-04-13 1956-04-13 Process for the production of an endless belt in the continuous production of welded pipes by welding pre-parts together

Publications (1)

Publication Number Publication Date
DE1089713B true DE1089713B (en) 1960-09-29

Family

ID=7365861

Family Applications (1)

Application Number Title Priority Date Filing Date
DEP16057D Pending DE1089713B (en) 1956-04-13 1956-04-13 Process for the production of an endless belt in the continuous production of welded pipes by welding pre-parts together

Country Status (2)

Country Link
DE (1) DE1089713B (en)
GB (1) GB831285A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4294394A (en) * 1978-08-07 1981-10-13 Hitachi, Ltd. Method of and apparatus for continuously rolling steel slabs

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT54839B (en) * 1909-11-29 1912-08-10 Elias Elkan Ries Method and device for the production of welded pipes.
CH177660A (en) * 1932-11-18 1935-06-15 Holt Broadfield Ward Process and device for the production of welded tubes.
FR870750A (en) * 1940-03-12 1942-03-23 Dortmund Hoerder Hu Ttenver A Manufacturing process for hollow bodies by windings
DE918021C (en) * 1940-04-19 1954-09-16 E H Siegfried Junghans Dr Ing Process and plant for the production of strip and sheet metal
DE920362C (en) * 1939-06-18 1954-11-22 Siegfried Dr-Ing E H Junghans Process and system for the production of metal semi-finished products of various types (wires, bars, rods, plates, strips, sheets or the like)
AT183725B (en) * 1949-02-18 1955-11-10 Tadeusz Sendzimir Rolling process in a planetary rolling mill and a dedicated rolling mill

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT54839B (en) * 1909-11-29 1912-08-10 Elias Elkan Ries Method and device for the production of welded pipes.
CH177660A (en) * 1932-11-18 1935-06-15 Holt Broadfield Ward Process and device for the production of welded tubes.
DE920362C (en) * 1939-06-18 1954-11-22 Siegfried Dr-Ing E H Junghans Process and system for the production of metal semi-finished products of various types (wires, bars, rods, plates, strips, sheets or the like)
FR870750A (en) * 1940-03-12 1942-03-23 Dortmund Hoerder Hu Ttenver A Manufacturing process for hollow bodies by windings
DE918021C (en) * 1940-04-19 1954-09-16 E H Siegfried Junghans Dr Ing Process and plant for the production of strip and sheet metal
AT183725B (en) * 1949-02-18 1955-11-10 Tadeusz Sendzimir Rolling process in a planetary rolling mill and a dedicated rolling mill

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4294394A (en) * 1978-08-07 1981-10-13 Hitachi, Ltd. Method of and apparatus for continuously rolling steel slabs

Also Published As

Publication number Publication date
GB831285A (en) 1960-03-30

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