US2405221A - Method and apparatus for impregnating strip stock - Google Patents

Method and apparatus for impregnating strip stock Download PDF

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Publication number
US2405221A
US2405221A US529324A US52932444A US2405221A US 2405221 A US2405221 A US 2405221A US 529324 A US529324 A US 529324A US 52932444 A US52932444 A US 52932444A US 2405221 A US2405221 A US 2405221A
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US
United States
Prior art keywords
chamber
babbitt
strip
impregnating
chambers
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
US529324A
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English (en)
Inventor
Cecil A Mann
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.)
Motors Liquidation Co
Original Assignee
Motors Liquidation Co
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 Motors Liquidation Co filed Critical Motors Liquidation Co
Priority to US529324A priority Critical patent/US2405221A/en
Application granted granted Critical
Publication of US2405221A publication Critical patent/US2405221A/en
Priority to DEG3768A priority patent/DE851437C/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D19/00—Casting in, on, or around objects which form part of the product
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
    • 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
    • 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

Definitions

  • This invention relates to a method and apparatus for continuously applying soft or lower melting point metal to the surface of a metallic strip, and is more particularly concerned with the method and apparatus for continuously applying and simultaneously impregnating porous metallic strip material with a lower melting point metal.
  • An object of the invention is to provide a method and apparatus whereby porous strip mae terial or composite strip material which includes a porous metal layer thereon may be continuously impregnated under' sub-'atmospheric conditions.
  • the drawing shows a diagrammatic View of a vacuum impregnating apparatus showing the various pumps and conduits with a strip being run therethrough.
  • a vacuum impregnating apparatus is shown at 20 which includes an elongated tunnel-like structure broken ldown into three main sections7 namely, the rst section 22, a vacuum chamber 24 and a third section 26. Sections 22, 24 and 26 are aligned and contain entries and exits so that a strip 30 may pass therethrough in a substantially at condition.
  • Strip 36 enters chamber 22 through an entrance 32 and leaves through an opening 34 which is an entrance to the vacuum chamber 24. It then passes through the Vacuum chamber and leaves said chamber through exit 36 which is the entrance to chamber 26.
  • Chambers 22 and 26 contain a predetermined volume of molten metal 46, in this case babbitt, the height of which is controlled by weirs 42 and 44 respectively.
  • babbitt the height of which is controlled by weirs 42 and 44 respectively.
  • a supplytank 46 contains a substantial volume of babbitt 40 and also is provided with heating means, not shown, for maintaining the babbitt in the molten condition.
  • the supply tank 46 is provided with two pumps 52 and 54 respectively. These pumps convey babbitt from supply tank 40 upwardly through supply conduits 56 and 58 to chambers 22 and 26 respectively.
  • the pumps 52 and 54 have sulcient pumping capacity to always maintain an excess of babbitt ilowing into the chamber so that there is always a return of babbitt through conduits 48 and 56. It is also apparent that there will be a leakage of babbitt around the entrance 32 and exit 38 of the apparatus, which babbitt is likewise suitably conveyed back to the supply tank 46.
  • the intermediate chamber 24 is evacuated by means of a vacuum pump 66 which cooperates with the second pump 62 that is immersed in the babbitt supply, Pump 62 is utilized to return babbitt leaking into the vacuum chamber 24 through openings 34 and 36.
  • the pump 62 while pumping babbitt into the supply tank 46 also induces a vacuum on the intake side thereof which cooperates with pump to produce a very high vacuum in the chamber 24.
  • a reducing gas to chambers 22 and 26 to maintain as clean a condition as possible on the surface of the babbitt whereby oxidation is reduced, if not eliminated. This lessens the amount of sla-g formed and eliminates the possibility of clogging of the pumps.
  • the supply tank 46 is closed to the atmosphere and may either be supplied with a reducing atmosphere thereover or the molten babbitt may be protected by flotation cf a refractory material such as bentonite en the surface thereof.
  • the pumps 60 and 62 maintain a pressure of about 2 to 3 mm. of Hg abs. in the vacuum chamber. Reducing atmosphere is admitted to this chamber through conduit 63 in suicient quantity to bring the pressure in the Vacuum chamber to about 7 mm. of Hg abs. The reducing atmosphere prevents any oxidation of the babbitt in this chamber. .y
  • the device is similar to the device shown in my copending application, Serial No. 376,512.
  • Strip 36 enters the apparatus through the entrance 32, having rst had the surface thereof cleaned of any oxidation, dirt or grease by means of a suitable fluxing apparatus, several embodiments of which are shown in my copending application above referred to.
  • the strip 3i) includes at least a portion thereof of porous material which requires impregnation.
  • the strip enters under the surface of the babbitt 4D in chamber 22 and partial impregnation is obtained. This portion of the strip then progresses into the vacuum chamber Where any gasY remaining in the pores escapes due to the rarefaction of the atmosphere thereover. This causes an impregnating of the babbitt into the pores to replace any gas which Was evacuated therefrom.
  • This portion of the strip then progresses into the chamber where it enters under the surface of the babbitt, and additional babbitt is thereby supplied to complete the impregnation.
  • the strip then passes out of the exit 3B into a suitable casting apparatus, not shown, but described in detail in my copending application Serial No. 376,512. 'Ihiscasting apparatus permits any desired thickness of babbitt to be cast on the strip,V but forms no part of the present invention.
  • pump S2 eliminates the necessity of the sump and barometric leg utilized in my copending application 376,512 in that the intake side of the pump balances the vacuum in chamber 2d so that pump 62 cooperates with pump 69' to produce the desired vacuum. Furthermore pump 62 has the additional function of removing the babbitt from the vacuum chamber which babbitt has flowed or leaked therein from chambers 22 and 25 in returning same to the supply tank G5.
  • any other lower melting point metal may be utilized, lead, tin, antimony, aluminum, or alloys thereof may all be used with porous strips having a higher melting point whereby substantially complete impregnation is possible.
  • an impregnating chamber including throat portions at either end thereof for restricting the now of impregnant therefrom around a strip passing therethrough, a communicating vacuum chamber at the egress end of said rst chamber, means for partially evacuating said vacuum chamber, and a second impregnating chamber 4 leakage into the vacuum chamber and out of the machine, and means cooperating with said rst mentioned means for partially evacuating said vacuum chamber and for returning the impregnant which leaks out of said throat portions to said supply tank.
  • an impregnating chamber including throat portions at either end thereof for restricting the flow of impregnant therefrom around a strip passing therethrough, a communicating vacuum chamber at the egress end of said first chamber, means for partially evacuating said vacuum chamber, and a second impregnating chamber connected with the egress end of said vacuum chamber and including throat portions at either end thereof for restricting the now of impregnant therefrom around a strip passing thereconnected with the egress end of said Vacuum chamber and including throat portions at either end thereof for restricting the iiow of impregnant therefrom around a strip passing therethrough, a supply tank for containing the impregnant, pump means for pumping impregnant to each of said impregnating chambers, said pump means having suicient capacity to maintain a defined level of impregnant in each of said chambers abovelthe level of isaidstrip regardless of the through, a supply tank
  • heating means are included in said rst and third chambers for maintaining the babbitt in a molten condition.
  • said rst chamber includes a xed Weir for maintaining a defined level of babbitt therein and wherein said third chamber includes an adjustable Weir whereby the babbitt level in said third chamber may be maintained at any desirable depth.
  • a' method of continuously impregnating porous metal strip material in a substantially flat condition comprising: providing two impregnating chambers containing molten impregnating metal, providing an intermediate vacuum chamber connecting said impregnating chambers,
  • all of said chambers being in substantially the same horizontal plane and so constructed that f leakage can occur from said impregnating charnbers into said vacuum chamber around said strip, passing said strip through' al1 of the chambers in substantially flat and unbent condition and in a single horizontal plane and beneath said impregnant in said impregnating chambers, supplying sufficient impregnant to each of said impregnating chambers to maintain the level of molten metal constant so that the impregnant leakage from said impregnating chambers into said Vacuum chamber is compensated for by the new irnpregnant being supplied into said chambers whereby a seal is maintained between said chambers and said vacuum chamber and finally removing said leakage from said vacuum chamber whereby the evacuation from said chamber is at least partially accomplished by removal of said impregnant therefrom.

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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)
  • Application Of Or Painting With Fluid Materials (AREA)
US529324A 1944-04-03 1944-04-03 Method and apparatus for impregnating strip stock Expired - Lifetime US2405221A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
US529324A US2405221A (en) 1944-04-03 1944-04-03 Method and apparatus for impregnating strip stock
DEG3768A DE851437C (de) 1944-04-03 1950-09-27 Vorrichtung zum kontinuierlichen Impraegnieren und UEberziehen von Metallbaendern

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US529324A US2405221A (en) 1944-04-03 1944-04-03 Method and apparatus for impregnating strip stock

Publications (1)

Publication Number Publication Date
US2405221A true US2405221A (en) 1946-08-06

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Family Applications (1)

Application Number Title Priority Date Filing Date
US529324A Expired - Lifetime US2405221A (en) 1944-04-03 1944-04-03 Method and apparatus for impregnating strip stock

Country Status (2)

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US (1) US2405221A (de)
DE (1) DE851437C (de)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2505960A (en) * 1947-01-02 1950-05-02 Gen Motors Corp Liquid applying apparatus for strip material
US2718474A (en) * 1953-12-07 1955-09-20 Ralph W Hodil Metal coating method and apparatus
US3463267A (en) * 1965-10-23 1969-08-26 Mcculloch Corp Oil impregnating method and apparatus for chain
US3721211A (en) * 1970-12-03 1973-03-20 Gebauer & Griller Fa Apparatus for tinning of metal wire
US3908593A (en) * 1972-04-28 1975-09-30 Maneely Illinois Continuous galvanizing manifold for tube and the like
US5451429A (en) * 1993-08-27 1995-09-19 The Boc Group Plc Method and apparatus for treating freshly metallized substrates

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2505960A (en) * 1947-01-02 1950-05-02 Gen Motors Corp Liquid applying apparatus for strip material
US2718474A (en) * 1953-12-07 1955-09-20 Ralph W Hodil Metal coating method and apparatus
US3463267A (en) * 1965-10-23 1969-08-26 Mcculloch Corp Oil impregnating method and apparatus for chain
US3721211A (en) * 1970-12-03 1973-03-20 Gebauer & Griller Fa Apparatus for tinning of metal wire
US3908593A (en) * 1972-04-28 1975-09-30 Maneely Illinois Continuous galvanizing manifold for tube and the like
US5451429A (en) * 1993-08-27 1995-09-19 The Boc Group Plc Method and apparatus for treating freshly metallized substrates

Also Published As

Publication number Publication date
DE851437C (de) 1952-10-06

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