WO1982002697A1 - Procede de production de corps de conteneurs et corps de conteneurs produits par ce procede - Google Patents

Procede de production de corps de conteneurs et corps de conteneurs produits par ce procede Download PDF

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Publication number
WO1982002697A1
WO1982002697A1 PCT/US1982/000177 US8200177W WO8202697A1 WO 1982002697 A1 WO1982002697 A1 WO 1982002697A1 US 8200177 W US8200177 W US 8200177W WO 8202697 A1 WO8202697 A1 WO 8202697A1
Authority
WO
WIPO (PCT)
Prior art keywords
nickel
plated
coating
edges
welded
Prior art date
Application number
PCT/US1982/000177
Other languages
English (en)
Inventor
Steel Corp Nat
Edward P Spencer
Gordon L Peters
Original Assignee
Steel Corp Nat
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 Steel Corp Nat filed Critical Steel Corp Nat
Priority to DE823231643A priority Critical patent/DE3231643A1/de
Priority to NL8220067A priority patent/NL8220067A/nl
Priority to BR8206157A priority patent/BR8206157A/pt
Priority to AU82087/82A priority patent/AU8208782A/en
Publication of WO1982002697A1 publication Critical patent/WO1982002697A1/fr

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K11/00—Resistance welding; Severing by resistance heating
    • B23K11/06—Resistance welding; Severing by resistance heating using roller electrodes
    • B23K11/061—Resistance welding; Severing by resistance heating using roller electrodes for welding rectilinear seams
    • B23K11/062—Resistance welding; Severing by resistance heating using roller electrodes for welding rectilinear seams for welding longitudinal seams of tubes
    • B23K11/063—Lap welding
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D51/00—Making hollow objects
    • B21D51/16—Making hollow objects characterised by the use of the objects
    • B21D51/26—Making hollow objects characterised by the use of the objects cans or tins; Closing same in a permanent manner
    • B21D51/2676—Cans or tins having longitudinal or helical seams
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D7/00—Containers having bodies formed by interconnecting or uniting two or more rigid, or substantially rigid, components made wholly or mainly of metal
    • B65D7/12—Containers having bodies formed by interconnecting or uniting two or more rigid, or substantially rigid, components made wholly or mainly of metal characterised by wall construction or by connections between walls
    • B65D7/34—Containers having bodies formed by interconnecting or uniting two or more rigid, or substantially rigid, components made wholly or mainly of metal characterised by wall construction or by connections between walls with permanent connections between walls
    • B65D7/38—Containers having bodies formed by interconnecting or uniting two or more rigid, or substantially rigid, components made wholly or mainly of metal characterised by wall construction or by connections between walls with permanent connections between walls formed by soldering, welding, or otherwise uniting opposed surfaces

Definitions

  • This invention relates to a process for forming can bodies from tinfree steel and more particularly to the high-speed sideseam welding of tinfree steel to form can bodies, and to can bodies formed by the process. It is well known to form can bodies from sheet steel container stock by initially cutting the steel sheet into generally rectangular blanks and then shaping the blanks into a cylindrical configuration with the side edges of the blanks in overlapping relation to be joined by resistance welding. Tinplate can be welded by such an operation without edge preparation and billions of welded sideseam cans have been produced from tinplate.
  • Another commercially available high-speed sideseam welding bodymaker employs a so-called wire mash electrode wherein a formed copper wire is carried in a track or groove in the periphery of the electrode wheels.
  • the copper wire is continuously replaced from a spool or coil so that a clean electrode contact surface is continuously presented at the point of contact with, the container stock.
  • This continuously replaced electrode enables high-speed welding of tinplate, but again edge cleaning has been required for the welding of tinfree container stock.
  • the overlap of the edges to be welded with currently available wire mash welders can be as small as
  • Another object of the invention is to provide an improved welded sideseam container formed from tinfree container stock. Another object of the invention is to provide a method of forming a welded sideseam in a container body which requires less energy and less electrode pressure than normally required to form such a seam utilizing tin-plated container stock.
  • an important featu-e resides in providing a coating of nickel on each surface of a steel sheet such as blackplate having a thickness and temper suitable for use as container stock.
  • the nickel coating may contain up to about 12% zinc and may be as thin as about 0.013 microns.
  • a chemical treatment for example a cathodic dichromate or chromic acid treatment, is preferably applied to the nickel-coated steel to increase its corrosion resistance and enhance lacquer adhesion characteristics.
  • a coating of lacquer is preferably applied, leaving a narrow strip unlacquered along the edges which are to be joined by welding.
  • the flat sheet steel is cut into can body blanks which are formed into a cylindrical configuration with the side edges overlapping so that the nickel-plated. surfaces are in direct contact.
  • the overlapping coated and treated (but unlacquered) surfaces are then welded by a high-speed sideseam welding bodymaker to produce a completed can body having a welded sideseam which has a thickness substantiall less than twice the thickness of the steel sheet.
  • the welded seam may be striped for anticorrosiveness in the conventional manner, and can ends may be attached. to the completed cylindrical body utilizing a double seam operation in the conventional manner and utilizing conventional apparatus.
  • FIG. 1 is a fragmentary sectional view, on an enlarged scale, illustrating a coated steel sheet suitable for use in the present invention
  • FIG. 2 is a schematic illustration of a welded sideseam being formed on an automatic bodymaking machine in accordance with the present invention
  • FIG. 3 is an enlarged schematic view showing the electrode positions employed in the apparatus of FIG. 2;
  • FIG. 4 is a further enlarged fragmentary sectional view showing the seam being welded.
  • FIG. 5 is a fragmentary sectional view of a welded seam formed in accordance with the invention.
  • the present invention involves the formation of a can body from tinfree steel container stock in a high-speed sideseam welding bodymaker without requiring edge stripping or cleaning of the container stock. More specifically, the invention involves forming a sideseam welded, container body from steel container stock in the form of thin sheet steel such as blackplate having a very thin coating of nickel plated on its surfaces. The nickel may contain up to about 12% zinc.
  • the container stock is cut into blanks which are formed into a cylindrical configuration with the edges to be joined retained in overlapping relation with the nickel-coated surfaces in direct contact.
  • the container stock employed in the present invention is illustrated in FIG. 1 and comprises a sheet 10 of mild steel such as blackplate having a thickness suitable for use as container stock.
  • the steel substrate 10 has its outer surfaces coated with a layer 12 of nickel, which may contain up to about 12% zinc, by an electroplating process.
  • the nickel coating may be very thin and preferably is within the range of about 0.013 to 0.125 microns in thickness. Thicker coatings can also be used, but generally are not considered economical, and excessivel thick coatings may result in only the nickel coatings being welded or fused.
  • the nickel coating 12 preferably has a thin layer 14, of an anticorrosive chemical treating solution applied to its outer surface.
  • Chemical layer 14 may be applied by subjecting the plated steel to a cathodic dichromate or chromic acid treatment in a manner conventional in treating chrome-plated, container stock.
  • the treated, plated steel is then preferably coated with a layer 15 of a suitable can lacquer except for a narrow strip, indicated at 16 in FIG. 1, which will form the side edges of container blanks 17 to be joined by welding.
  • the chemically treated nickel-plated steel can not only be welded without the necessity of stripping either the chromate chemical treatment or the nickel plating from the side edges, but it has been determined that substantially less welding current may be employed than is required for welding tinplate of the same thickness. Further, a good weld can be obtained while utilizing substantially less pressure on the electrodes than is normally required for welding tin plate.
  • the very thin nickel coating and the oxide coating resulting from the chemical treatment are diffused in the joint and a strong fusion bond is produced.
  • FIGS. 2-4 Various commercial sideseam welding bodymakers may be employed in the practice of the present invention; however, the preferred apparatus utilizes the so-called wire mash technique.
  • One such apparatus is the Super WIMA automatic bodymaker, manufactured by Soudronic AG, of Bergdietikon, Switzerland, and the operation of which is illustrated schematically in FIGS. 2-4.
  • the nickel-coated container stock illustrated in FIG. 1 is initially cut into generally rectangular blanks of the appropriate size and supplied to the bodymaker to be processed automatically by the apparatus.
  • the individual blanks 17 are formed into a cylindrical configuration around a hollow mandrel 18 and then moved therealong through a welding station by suitable feed mechanism, not shown.
  • the side edges of the blank 17 are brought together in overlapping relation with the nickel-plated, chemically treated surfaces in direct contact as illustrated in FIG. 4.
  • Electrode 22 and electrode wheel 26 are supported within the mandrel 18 and contact the inner surface of the formed cylinder while wire electrode 20 and electrode wheel 24 are positioned outside and contact the outer surface of the overlapped portion of the cylinder. Electrical energy is applied to the electrodes from a suitable source indicated at 27, and pressure is simultaneously applied through the electrodes to overlapped portions of the container blank to simultaneously heat and mash, or flatten the overlapped edges and form a flattened fused weld joint as illustrated at 28 in FIG. 5.
  • the completed weld joint may be from about 1.2 to about 1.3 times the thickness of the coated container stock and the total length d, measured circumferentially of the formed can body, may be substantially less than twice the thickness t of the original container stock.
  • Metallurgical analysis of weld joints thus formed show that a solid fusion joint is formed. Pressure applied by the electrodes during the fusion process substantially eliminates sharp edges and burrs.
  • a narrow strip of organic coating material is applied to the welded seam and overlapping the edges of the lacquer coating 15 in a conventional manner.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Rigid Containers With Two Or More Constituent Elements (AREA)
  • Electroplating Methods And Accessories (AREA)

Abstract

Des corps de conteneurs cylindriques, ou boites, ayant des joints lateraux soudees sont formes a partir de flans en tole d'acier (17) ayant un revetement fin (12) de nickel, ou un revetement de nickel contenant jusqu'a environ 12% de zinc, de chaque cote. Le revetement de nickel (12) s'etend completement jusqu'aux bords des flans (17) qui sont formes avec une configuration cylindrique, les bords lateraux se chevauchant legerement. Les bords de chevauchement des flans respectifs sont alors soudes, de preference par un procede de soudage continu avec un fil metallique pour produire un cordon de soudage (28) ayant une epaisseur sensiblement inferieure a deux fois l'epaisseur du flan metallique. Avant le soudage, l'acier plaque au nickel peut etre traite chimiquement dans une solution d'acide chromique ou de bichromate, le traitement chimique (14) s'etendant entierement jusqu'aux bords a souder. Les besoins en energie electrique pour souder le materiau sont sensiblement inferieurs a ceux utilises pour le fer blanc.
PCT/US1982/000177 1981-02-11 1982-02-11 Procede de production de corps de conteneurs et corps de conteneurs produits par ce procede WO1982002697A1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
DE823231643A DE3231643A1 (de) 1981-02-11 1982-02-11 Verfahren zum herstellen von behaelterkoerpern und dadruch hergestellte behaelterkoerper
NL8220067A NL8220067A (nl) 1981-02-11 1982-02-11 Werkwijze voor de vervaardiging van bliklichaam, alsmede bliklichaam verkregen onder toepassing van de werkwijze.
BR8206157A BR8206157A (pt) 1981-02-11 1982-02-11 Processo de produzir corpos de recipientes e corpos de recipientes produzidos pelo mesmo
AU82087/82A AU8208782A (en) 1981-02-11 1982-02-11 Method of producing container bodies and container bodies produced thereby

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US23356881A 1981-02-11 1981-02-11
US233568810211 1981-02-11

Publications (1)

Publication Number Publication Date
WO1982002697A1 true WO1982002697A1 (fr) 1982-08-19

Family

ID=22877773

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US1982/000177 WO1982002697A1 (fr) 1981-02-11 1982-02-11 Procede de production de corps de conteneurs et corps de conteneurs produits par ce procede

Country Status (11)

Country Link
EP (1) EP0070900A4 (fr)
JP (1) JPS58500056A (fr)
AU (1) AU8208782A (fr)
BR (1) BR8206157A (fr)
CA (1) CA1177419A (fr)
DE (1) DE3231643A1 (fr)
ES (1) ES8304457A1 (fr)
GB (1) GB2108412B (fr)
IT (1) IT8247771A0 (fr)
NL (1) NL8220067A (fr)
WO (1) WO1982002697A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1984001914A1 (fr) * 1982-11-13 1984-05-24 Schuler Gmbh L Installation de soudage longitudinal electrique continu en ligne par ecrasement et resistance
WO1999043461A1 (fr) * 1998-02-28 1999-09-02 U.S. Can Company Recipient de distribution d'aerosol et son procede de fabrication
TWI632017B (zh) * 2016-11-30 2018-08-11 統一實業股份有限公司 Method for adjusting process of splicing surface contour curve with tinplate can welding line

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3618817A (en) * 1970-05-14 1971-11-09 Rheem Mfg Co Food container and method of making the same
US3982314A (en) * 1972-11-14 1976-09-28 Kozo Yoshizaki Method of producing tin coated steel sheet used for seamless steel container
US4223196A (en) * 1960-02-29 1980-09-16 Continental Can Company Inc. Welded tubular articles and method for making the same
US4296293A (en) * 1980-02-25 1981-10-20 The Continental Group, Inc. Progressive welding and forging of overlapped seams in tubular bodies

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4223196A (en) * 1960-02-29 1980-09-16 Continental Can Company Inc. Welded tubular articles and method for making the same
US3618817A (en) * 1970-05-14 1971-11-09 Rheem Mfg Co Food container and method of making the same
US3982314A (en) * 1972-11-14 1976-09-28 Kozo Yoshizaki Method of producing tin coated steel sheet used for seamless steel container
US4296293A (en) * 1980-02-25 1981-10-20 The Continental Group, Inc. Progressive welding and forging of overlapped seams in tubular bodies

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1984001914A1 (fr) * 1982-11-13 1984-05-24 Schuler Gmbh L Installation de soudage longitudinal electrique continu en ligne par ecrasement et resistance
WO1999043461A1 (fr) * 1998-02-28 1999-09-02 U.S. Can Company Recipient de distribution d'aerosol et son procede de fabrication
US6328197B1 (en) * 1998-02-28 2001-12-11 United States Can Company Aerosol dispensing container and method for manufacturing same
TWI632017B (zh) * 2016-11-30 2018-08-11 統一實業股份有限公司 Method for adjusting process of splicing surface contour curve with tinplate can welding line

Also Published As

Publication number Publication date
AU8208782A (en) 1982-08-26
GB2108412A (en) 1983-05-18
IT8247771A0 (it) 1982-02-11
EP0070900A4 (fr) 1985-10-16
NL8220067A (nl) 1983-01-03
EP0070900A1 (fr) 1983-02-09
CA1177419A (fr) 1984-11-06
BR8206157A (pt) 1983-01-11
ES509474A0 (es) 1983-03-01
GB2108412B (en) 1984-09-12
JPS58500056A (ja) 1983-01-13
ES8304457A1 (es) 1983-03-01
DE3231643A1 (de) 1983-02-10

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