GB631687A - Process and apparatus for treating electrolytically tinned ferrous metal strip - Google Patents

Process and apparatus for treating electrolytically tinned ferrous metal strip

Info

Publication number
GB631687A
GB631687A GB9163/47A GB916347A GB631687A GB 631687 A GB631687 A GB 631687A GB 9163/47 A GB9163/47 A GB 9163/47A GB 916347 A GB916347 A GB 916347A GB 631687 A GB631687 A GB 631687A
Authority
GB
United Kingdom
Prior art keywords
strip
tin
muffle
oil
passed
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
Application number
GB9163/47A
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.)
Carnegie Illinois Steel Corp
Original Assignee
Carnegie Illinois Steel 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 Carnegie Illinois Steel Corp filed Critical Carnegie Illinois Steel Corp
Publication of GB631687A publication Critical patent/GB631687A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D5/00—Electroplating characterised by the process; Pretreatment or after-treatment of workpieces
    • C25D5/48—After-treatment of electroplated surfaces
    • C25D5/50—After-treatment of electroplated surfaces by heat-treatment
    • 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
    • C25D7/06—Wires; Strips; Foils

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Electroplating Methods And Accessories (AREA)
  • Coating With Molten Metal (AREA)

Abstract

631,687. Tinning. CARNEGIE-ILLINOIS STEEL CORPORATION. April 3, 1947. No. 9163. Convention date, April 23, 1946. [Class 82(ii)] [Also in Group XXXVI] Electrolytically tinned strip metal is sprayed on both sides with a coating of thermally stable vegetable oil such as palm or cotton seed oil, the excess oil being removed leaving a film adhering to the strip which is then passed through a thermally insulated muffle, the portion of the strip within the muffle being heated by the passage of electric current therethrough to a temperature sufficient to melt the tin before it leaves the muffle from which the strip is immediately passed through a quenching bath. As shown, the tin coated strip 1 is passed through a steam drier 8 to dry off any liquid adhering thereto and thence upwardly between nozzles 17 which spray oil supplied from reservoir 18 by pump 19 on to both sides of the strip. Excess oil flowing down the strip is wiped by pinch rolls 16 and delivered into trough 25 for return to reservoir 18. Additional pinch rolls 16a may be provided to remove any excess oil adhering to the strip after passage between the nozzles 17. The oil coated strip then passes upwardly into the refractory muffle 27 divided by inner refractory wall, 28 dividing the muffle into leg 29 in which the strip is heated from room temperature to the melting point of tin by electric current passed through the strip between contact rolls 11 and 33 and leg 30 in which the tin coating is melted starting at the top of the leg. From the muffile the strip passes immediately into a quenching bath 34. The muffle is heated by resistance elements 31 in the walls thereof to prevent loss of heat from the strip by radiation. The strip is maintained at a temperature above the melting point of the tin for such length of time as to promote an alloy bond between the tin and the strip metal and pin holes in the tin coating are substantially filled. Specification 557,029, [Group XXXVI], is referred to.
GB9163/47A 1946-04-23 1947-04-03 Process and apparatus for treating electrolytically tinned ferrous metal strip Expired GB631687A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US631687XA 1946-04-23 1946-04-23

Publications (1)

Publication Number Publication Date
GB631687A true GB631687A (en) 1949-11-08

Family

ID=22047395

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9163/47A Expired GB631687A (en) 1946-04-23 1947-04-03 Process and apparatus for treating electrolytically tinned ferrous metal strip

Country Status (1)

Country Link
GB (1) GB631687A (en)

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