US3230615A - Continuous tube forming and galvanizing - Google Patents

Continuous tube forming and galvanizing Download PDF

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Publication number
US3230615A
US3230615A US239432A US23943262A US3230615A US 3230615 A US3230615 A US 3230615A US 239432 A US239432 A US 239432A US 23943262 A US23943262 A US 23943262A US 3230615 A US3230615 A US 3230615A
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US
United States
Prior art keywords
tubing
zinc
galvanizing
forming
ring
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
Application number
US239432A
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English (en)
Inventor
Theodore H Krengel
Wilk Emil
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.)
Allied Tube and Conduit Corp
Original Assignee
Allied Tube and Conduit Corp
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 Allied Tube and Conduit Corp filed Critical Allied Tube and Conduit Corp
Priority to US239432A priority Critical patent/US3230615A/en
Priority to CH1434763A priority patent/CH418270A/de
Priority to DE19631521119D priority patent/DE1521119B1/de
Priority to DE19631452335 priority patent/DE1452335A1/de
Priority to DE6604790U priority patent/DE6604790U/de
Priority to DE19631521118 priority patent/DE1521118B2/de
Application granted granted Critical
Publication of US3230615A publication Critical patent/US3230615A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • 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
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
    • C23C2/003—Apparatus
    • C23C2/0038—Apparatus characterised by the pre-treatment chambers located immediately upstream of the bath or occurring locally before the dipping process
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
    • C23C2/02—Pretreatment of the material to be coated, e.g. for coating on selected surface areas
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
    • C23C2/02—Pretreatment of the material to be coated, e.g. for coating on selected surface areas
    • C23C2/022—Pretreatment of the material to be coated, e.g. for coating on selected surface areas by heating
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
    • C23C2/02—Pretreatment of the material to be coated, e.g. for coating on selected surface areas
    • C23C2/024—Pretreatment of the material to be coated, e.g. for coating on selected surface areas by cleaning or etching
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
    • C23C2/34—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor characterised by the shape of the material to be treated
    • C23C2/36—Elongated material
    • C23C2/38—Wires; Tubes
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C8/00—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
    • C23C8/06—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using gases
    • C23C8/08—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using gases only one element being applied
    • C23C8/10—Oxidising
    • C23C8/12—Oxidising using elemental oxygen or ozone
    • C23C8/14—Oxidising of ferrous surfaces
    • 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
    • Y10T29/51—Plural diverse manufacturing apparatus including means for metal shaping or assembling
    • Y10T29/5136—Separate tool stations for selective or successive operation on work
    • Y10T29/5137—Separate tool stations for selective or successive operation on work including assembling or disassembling station
    • 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
    • Y10T29/51—Plural diverse manufacturing apparatus including means for metal shaping or assembling
    • Y10T29/5136—Separate tool stations for selective or successive operation on work
    • Y10T29/5137—Separate tool stations for selective or successive operation on work including assembling or disassembling station
    • Y10T29/5143—Separate tool stations for selective or successive operation on work including assembling or disassembling station and means to machine product
    • Y10T29/5145—Separate tool stations for selective or successive operation on work including assembling or disassembling station and means to machine product to sever product to length
    • 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
    • Y10T29/52—Plural diverse manufacturing apparatus
    • 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
    • Y10T29/53—Means to assemble or disassemble
    • Y10T29/53313—Means to interrelatedly feed plural work parts from plural sources without manual intervention
    • Y10T29/53348—Running-length work
    • Y10T29/53357—Pipe section

Definitions

  • This invention relates to a process and apparatus for the continuous forming and galvanizing of thin wall metal tubing and it relates more particularly to the production of finished and sized galvanized thin wall tubing from metal strip.
  • FIG. l is a flow diagram of .the continuous forming and galvanizing of thin wall tubing from metal strip;
  • FIG. 2 is a schematic sectional elevational view of an additional processing step interposed between the scarf and the wash;
  • FIG. 3 is a schematic view in cross-section showing the air knife immediately following the galvanizing step
  • the metal strip 10 is unrolled from reels 12 mounted for rotational movement on a stand 14.
  • the strip is advanced through suitable end-joining and 3,230,615 Patented Jan. 25, 1966 FCice take-up means 16 to 44 to an edge shave 46 wherein the lateral edges of the strip are trimmed to size the strip and to present freshly cut metal to the subsequent operation for welding after the edges are brought together by the tube forming rolls 48.
  • the strip is advanced through a wiper 47 and into the bank of forming rolls'48 wherein the strip is formed to tubular shape.
  • the tubing is advanced through a weld section including a seam Welder 5t), a seam ⁇ shaver 52, a water cooling spray 53, and a Welder 54 to produce a welded tubing 56 which is subsequently advancedl through washers 58 and 74, a rinse 78' and acid wash 80, followed by a water rinse 96 for the removal ofoxide, grease, etc. from the surface of the metal tubingV in preparation of the tubing for the subsequent galvaniz-n ing operation.
  • a weld section including a seam Welder 5t), a seam ⁇ shaver 52, a water cooling spray 53, and a Welder 54 to produce a welded tubing 56 which is subsequently advancedl through washers 58 and 74, a rinse 78' and acid wash 80, followed by a water rinse 96 for the removal ofoxide, grease, etc. from the surface of the metal tubingV in preparation of the tubing for the subsequent galvaniz-n ing operation.
  • the welded and cleaned tubing 56 then proceedscontinuously from the cleaning section toa steam blast 97- for the removal of surface moisture and then to induction' heaters for preheating the formed tubing to a temperaturek suitable for entry into the bath 132 of moltenzinc for galvanizing.
  • the preheat and the housing containing the molten zinc is maintained under an inert atmosphe're to minimize oxidation and to enhance theV galvanizing operation.
  • a die system is embodied for the removal of excess molten zinc from the' surface and thereafter the galvanized tubing 56 is advance/d througha water spray ⁇ 164 for freezing the zinc onto the surface of the steel tubing. From there, the galvanized tubing is put through water spray section19'0 for coolingv d-ow4 the tubing before being advanced to the marking roll 191,. sizing rolls 192 and traveling shears 194 wherein they galvanized tubing is sized to the desired length for use.
  • a problem that has 'been encountered in the process of continuous forming and galvanizing of steel tubing resides inthe difficulty experienced properly to galvanize the outer surfaces of the formed tubingl 'to provide a uniform and continuous coating of zinc wherever small amounts of iro-n oxide remain on the surface.
  • Such small amounts of oxide are to be found alongside the'sc-arf 522L upon removal of the prctru-dingportion of the bead 19C formed during the welding.
  • Such oxides. illustrated by the numeral 52h, are not effectively removed during the subsequent washing and pickling ⁇ steps to which the formed tubing is exposed after welding but before preheat and galvanizing.
  • the oxides present on the surfaces of the formed tubingA have been found to catalyze the formation of additional oxidation products as well asl other reaction products when the metal is raised to elevated temperature in the preheat.
  • the continuous tube forming and galvanizing process is markedly enhanced and that the uniformity and quality of product is greatly improved when the surface of the tubing, including the scarfed portions and the portions adjacent thereto, is engaged by the periphery of a rapidly rotating wire bristle brushing wheel 52c which is preferably mounted and operated for rotational movement in a direction whereby the periphery of the wheel travels countercurrent to the direction of movement of the tubing, thereby to maximize engagement and effect.
  • the wire brushing Wheel 52c is mounted on a spindle 52d in position to engage the top side of the formed tubing subsequent to the scariing operation but before the Washers and acid pickling.
  • the spindle is ySupported in suitable journals 52e in engagement with a drive shaft of a driving motor 52f.
  • Another concept of this invention is addressed to an improved means for setting the zinc on the surface of the tubing to achieve a desired thickness of coating and for removal of excess zinc from the surface of the tubing.
  • a doughnut 200 in the form of an annular ring having ⁇ a central opening 202 through which the tubing 56 is advanced immediately following emergence from the bath of molten zinc an-d after the galvanized tubing has passed from within the closure 132..
  • the annular ring 260 is provided with a plurality of jet openings 204 which face inwardly and rearwardly .and are uniformly distributed inlsubstantially equally spaced apart relation about the inner periphery of the ring to direct air streams 206 inwardly and rearwardly onto the surfaces of the tubing.
  • the air streams function as air knives to cu-t olf excess zinc and rearwardly to displace ⁇ such excesses onto the surfaces of the oncoming tubing thereby to insure adequate'and complete coverage while excess molten zinc 208 drops from the tubing into -a suitable underlying receiver 210 which leads from the outside of the housing to the interior thereof 'for return of zinc to the molten bath.
  • an additional ring 212 located rearwardly of the ring 200 and which is also provided with a central opening 214 in axial alignment with the opening Ztl@ in the ring 200 through which the tubing 56 is advanced.
  • the additional ring 212 is also provided with a plurality of openings 216 which are addressed inwardly and forwardly to direct streams of cold air onto the periphery of the tubing in advance of the cut-E ring 200.
  • the cold air from the ring 212 operates to freeze the zinc onto the surfaces of the tubing in a manner to cause a heavier layer of zinc to resist removal by the air knife ring 200 whereby a heavier layer 21S of zinc is retained on the surface.
  • the thickness of the layer 218 of retained zinc can be varied in accordance with the specification or demands for particular uses. It will be understood that more than one jet cooling ring 212 can be employed in series before the cut-olf ring 200 to insure the retention and proper distribution of the desired amount of zinc in the layer 21S that is retained on the surface.
  • a machine for the continuous forming and 'galvanizing of tubing from metal strip including means for continuously feeding the metal strip to the machine, means for forming the strip to rounded shape to bring the later-al edges together, welding means for joining the free edges of the metal strip in a continuous seam to form completely enclosed endless lengths of tubing7 scarfing means for removing portions of the weld extending outwardly beyond the periphery of the tubing, means for preheating the tubing to a temperature suitable for wetting with molten zin-c, means for applying molten zinc onto the surface of the preheated tubing and means for cutting the endless Zinc coated tubing into predetermined lengths, the improvement which comprises a wire bristle brushing wh-eel located in alignment with the line of travel of the tubing beyond the scarting means but in advance of the preheat means and radially positioned with respect to the axis of the tubing to bring the edges of thewire bristles of the wheel into engagement with a peripheral portion of the formed and welded tub
  • a machine as claimed in claim 1 in which the wire bristle brush is located in a -direction for movement of the 'bristles counter-current to the direction of movement of the tubing.
  • a machine for the continuous forming and galvanizing of tubing including means for continuously Ifeeding endless strips of steel, means for forming the steel strip into rounded shape to bring the lateral edges together, welding means for joining the free edges of the strip of steel in a continuous seam to form completely enclosed endless lengths of tubing, means for applying molten zinc onto the outer surface of the tubing to galvanize the outer surface and means for cutting the galvanized tubing into predetermined lengths, the improvement which comprises means for controlling the amount of zinc retained on the outer peripheral surface of the tubing comprising a first ring having a central opening aligned with the tubing beyond the means for applying lmolten zinc for passage of the zinc coated tubing therethrough and immediately following said zinc coating means, a plurality of orifices in the inner portion of the ring for directing streams of gas in a direction rearwardly and inwardly onto the oncoming surface of the tubing and arranged to engage the tubing all around with the issuing gaseous streams for displacement of excess molten Zinc from the peripheral
  • a machine for the continuous forming and galvanizing of tubing including means for continuously feeding endless strips of steel, means for forming the steel strip into rounded shape to bring the lateral edges together, welding means for joining the free edges of the strip of steel in a continuous seam to form completely enclosed endless lengths of tubing, means for applying molten zinc onto the outer surface of the tubing to galvanize the outer surface and means for cutting the galvanized tubing into predetermined lengths, the improvement which comprises means for controlling the amount 4of zinc retained lon the outer peripheral surface of the tubing comprising a tirst ring having a central opening aligned with the tubing beyond the means for applying molten zinc for passage of the zinc coated tubing therethrough and immediately following said zinc coating means, a plurality of orifices in the inner portion of the ring for directing streams of gas in a direction rearwardly and inwardly onto the oncoming surface of the tubing and arranged to engage the tubing all around with the issuing gaseous streams for displacement of excess molten zinc from the

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Coating With Molten Metal (AREA)
US239432A 1962-11-23 1962-11-23 Continuous tube forming and galvanizing Expired - Lifetime US3230615A (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
US239432A US3230615A (en) 1962-11-23 1962-11-23 Continuous tube forming and galvanizing
CH1434763A CH418270A (de) 1962-11-23 1963-11-22 Maschine für die kontinuierliche Herstellung von galvanisierten Rohren
DE19631521119D DE1521119B1 (de) 1962-11-23 1963-11-23 Feuerverzinktes Rohr und Vorrichtung zu seiner kontinuierlichen Herstellung
DE19631452335 DE1452335A1 (de) 1962-11-23 1963-11-23 Verfahren und Vorrichtung zum kontinuierlichen Formen und Galvanisieren duennwandiger Metallroehren
DE6604790U DE6604790U (de) 1962-11-23 1963-11-23 Vorrichtung zum kontinuierlichen formen und galvanisieren duennwandiger metallroehren.
DE19631521118 DE1521118B2 (de) 1962-11-23 1963-11-23 Verfahren und Vorrichtung zum Nachbehandeln von verzinkten Rohren

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US239432A US3230615A (en) 1962-11-23 1962-11-23 Continuous tube forming and galvanizing

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Publication Number Publication Date
US3230615A true US3230615A (en) 1966-01-25

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US239432A Expired - Lifetime US3230615A (en) 1962-11-23 1962-11-23 Continuous tube forming and galvanizing

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US (1) US3230615A (de)
CH (1) CH418270A (de)
DE (4) DE1452335A1 (de)

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3332138A (en) * 1965-08-11 1967-07-25 Gen Cable Corp Method and apparatus for making precision sized tubing
US3396451A (en) * 1966-05-24 1968-08-13 Syro Steel Co Production line for steel landing mats
US3653572A (en) * 1969-09-05 1972-04-04 Ibm Hot gas solder removal
US3733670A (en) * 1972-06-29 1973-05-22 Rheem Mfg Co Apparatus for making food containers
US3845540A (en) * 1972-04-28 1974-11-05 Maneely Illinois Hot galvanizing process and apparatus
DE2616292A1 (de) * 1975-08-14 1977-02-24 Allied Tube & Conduit Corp Verfahren und vorrichtung zur herstellung von beschichtetem rohrmaterial aus stahlband
JPS52102517U (de) * 1976-01-30 1977-08-04
EP0059028A2 (de) * 1981-02-09 1982-09-01 ALLIED TUBE & CONDUIT CORPORATION Kontinuierliche Herstellung von polierten und geschwabbelten Rohrleitungen
WO1991011541A1 (en) * 1990-01-25 1991-08-08 Tubemakers Of Australia Limited Inline galvanising process
AU651960B2 (en) * 1990-01-25 1994-08-11 Tubemakers Of Australia Limited Inline galvanising process
WO1998012014A1 (en) 1996-09-23 1998-03-26 Allied Tube & Conduit Corporation Apparatus for painting tubing interiors during formation
US6063452A (en) * 1995-06-07 2000-05-16 Allied Tube & Conduit Corporation In-line coating and curing a continuously moving welded tube with an organic polymer
US20100266783A1 (en) * 2009-04-15 2010-10-21 Hot Dip Solutions, Llc Method of coating a substrate
CN113088856A (zh) * 2021-03-31 2021-07-09 江西科技师范大学 深共熔溶剂类热镀锌添加剂及其制备方法和应用

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL84759C (de) *
US1027864A (en) * 1911-07-12 1912-05-28 Automatic Welding Company Continuous process of manufacturing metal tubes.
US1124727A (en) * 1911-10-27 1915-01-12 Edwin T Greenfield Machine for treating metal pipes or tubes.
US1687309A (en) * 1922-03-25 1928-10-09 Motor Products Corp Air die
US2072273A (en) * 1933-04-26 1937-03-02 Union Carbide & Carbon Corp Pressure vessel shell and method of forming the same
GB552126A (en) * 1941-03-21 1943-03-24 Gen Motors Corp Improvements in the manufacture of metal tubing
US2927371A (en) * 1953-01-23 1960-03-08 Armco Steel Corp Method of continuously forming welded coated steel tubing
US2976394A (en) * 1957-06-22 1961-03-21 Sonnichsen Arne Method for the manufacturing of electrically welded tubes and improvement in means for such manufacture
US2991345A (en) * 1958-06-09 1961-07-04 Porter Co Inc H K Induction welding machine with auxiliary air blast heating

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL84759C (de) *
US1027864A (en) * 1911-07-12 1912-05-28 Automatic Welding Company Continuous process of manufacturing metal tubes.
US1124727A (en) * 1911-10-27 1915-01-12 Edwin T Greenfield Machine for treating metal pipes or tubes.
US1687309A (en) * 1922-03-25 1928-10-09 Motor Products Corp Air die
US2072273A (en) * 1933-04-26 1937-03-02 Union Carbide & Carbon Corp Pressure vessel shell and method of forming the same
GB552126A (en) * 1941-03-21 1943-03-24 Gen Motors Corp Improvements in the manufacture of metal tubing
US2927371A (en) * 1953-01-23 1960-03-08 Armco Steel Corp Method of continuously forming welded coated steel tubing
US2976394A (en) * 1957-06-22 1961-03-21 Sonnichsen Arne Method for the manufacturing of electrically welded tubes and improvement in means for such manufacture
US2991345A (en) * 1958-06-09 1961-07-04 Porter Co Inc H K Induction welding machine with auxiliary air blast heating

Cited By (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3332138A (en) * 1965-08-11 1967-07-25 Gen Cable Corp Method and apparatus for making precision sized tubing
US3396451A (en) * 1966-05-24 1968-08-13 Syro Steel Co Production line for steel landing mats
US3653572A (en) * 1969-09-05 1972-04-04 Ibm Hot gas solder removal
US3845540A (en) * 1972-04-28 1974-11-05 Maneely Illinois Hot galvanizing process and apparatus
US3733670A (en) * 1972-06-29 1973-05-22 Rheem Mfg Co Apparatus for making food containers
DE2616292A1 (de) * 1975-08-14 1977-02-24 Allied Tube & Conduit Corp Verfahren und vorrichtung zur herstellung von beschichtetem rohrmaterial aus stahlband
JPS52102517U (de) * 1976-01-30 1977-08-04
JPS5624301Y2 (de) * 1976-01-30 1981-06-08
EP0059028A2 (de) * 1981-02-09 1982-09-01 ALLIED TUBE & CONDUIT CORPORATION Kontinuierliche Herstellung von polierten und geschwabbelten Rohrleitungen
EP0059028A3 (en) * 1981-02-09 1982-12-29 Allied Tube & Conduit Corporation Continuous production of polished and buffed tubing
US4441238A (en) * 1981-02-09 1984-04-10 Allied Tube & Conduit Corporation Continuous production of polished and buffed tubing
WO1991011541A1 (en) * 1990-01-25 1991-08-08 Tubemakers Of Australia Limited Inline galvanising process
AU651960B2 (en) * 1990-01-25 1994-08-11 Tubemakers Of Australia Limited Inline galvanising process
US6063452A (en) * 1995-06-07 2000-05-16 Allied Tube & Conduit Corporation In-line coating and curing a continuously moving welded tube with an organic polymer
US6197394B1 (en) 1995-06-07 2001-03-06 Allied Tube & Conduit Corporation In-line coating and curing a continuously moving welded tube with an organic polymer
WO1998012014A1 (en) 1996-09-23 1998-03-26 Allied Tube & Conduit Corporation Apparatus for painting tubing interiors during formation
US20100266783A1 (en) * 2009-04-15 2010-10-21 Hot Dip Solutions, Llc Method of coating a substrate
CN113088856A (zh) * 2021-03-31 2021-07-09 江西科技师范大学 深共熔溶剂类热镀锌添加剂及其制备方法和应用
CN113088856B (zh) * 2021-03-31 2022-12-23 江西科技师范大学 深共熔溶剂类热镀锌添加剂及其制备方法和应用

Also Published As

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DE1452335A1 (de) 1969-02-27
DE1521118B2 (de) 1970-09-17
DE6604790U (de) 1970-02-26
DE1521119B1 (de) 1969-11-06
CH418270A (de) 1966-08-15
DE1521118A1 (de) 1969-10-02

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