GB1001301A - Improvements in or relating to processes for applying alloys to metal surfaces - Google Patents

Improvements in or relating to processes for applying alloys to metal surfaces

Info

Publication number
GB1001301A
GB1001301A GB12234/62A GB1223462A GB1001301A GB 1001301 A GB1001301 A GB 1001301A GB 12234/62 A GB12234/62 A GB 12234/62A GB 1223462 A GB1223462 A GB 1223462A GB 1001301 A GB1001301 A GB 1001301A
Authority
GB
United Kingdom
Prior art keywords
alloy
flux
tinning
trough
crown
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
GB12234/62A
Inventor
Jean Levandowsky
Pierre Mauguen
Jean Louis Hainzenlin
Philippe Jacob
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.)
Commissariat a lEnergie Atomique et aux Energies Alternatives CEA
Original Assignee
Commissariat a lEnergie Atomique CEA
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 Commissariat a lEnergie Atomique CEA filed Critical Commissariat a lEnergie Atomique CEA
Publication of GB1001301A publication Critical patent/GB1001301A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
    • G21C—NUCLEAR REACTORS
    • G21C13/00—Pressure vessels; Containment vessels; Containment in general
    • G21C13/02—Details
    • G21C13/06—Sealing-plugs
    • G21C13/073—Closures for reactor-vessels, e.g. rotatable
    • G21C13/0735—Seals for closures or for rotatable closures
    • 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
    • B23K1/00—Soldering, e.g. brazing, or unsoldering
    • B23K1/19—Soldering, e.g. brazing, or unsoldering taking account of the properties of the materials to be soldered
    • 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
    • B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
    • B23K35/22—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by the composition or nature of the material
    • B23K35/24—Selection of soldering or welding materials proper
    • B23K35/26—Selection of soldering or welding materials proper with the principal constituent melting at less than 400 degrees C
    • B23K35/264—Bi as the principal constituent
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C28/00—Alloys based on a metal not provided for in groups C22C5/00 - C22C27/00
    • 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
    • C23C2/04—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor characterised by the coating material
    • C23C2/08—Tin or alloys based thereon
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16J—PISTONS; CYLINDERS; SEALINGS
    • F16J13/00—Covers or similar closure members for pressure vessels in general
    • G—PHYSICS
    • G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
    • G21C—NUCLEAR REACTORS
    • G21C13/00—Pressure vessels; Containment vessels; Containment in general
    • G21C13/02—Details
    • G21C13/06—Sealing-plugs
    • G—PHYSICS
    • G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
    • G21C—NUCLEAR REACTORS
    • G21C13/00—Pressure vessels; Containment vessels; Containment in general
    • G21C13/02—Details
    • G21C13/06—Sealing-plugs
    • G21C13/073—Closures for reactor-vessels, e.g. rotatable
    • 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
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E30/00—Energy generation of nuclear origin
    • Y02E30/30—Nuclear fission reactors

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Plasma & Fusion (AREA)
  • Materials Engineering (AREA)
  • High Energy & Nuclear Physics (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Gasket Seals (AREA)
  • Other Surface Treatments For Metallic Materials (AREA)

Abstract

A rotatable plug or cover for a nuclear reactor has a trough and crown construction, the trough into which the crown dips being filled with a low melting alloy, preferably a Bi/Sn eutectic (56-60% Bi, the remainder Sn), which acts as a seal. The cover rotates on ball bearings, and can only be turned after the alloy is rendered molten by means of associated heating elements. The surfaces of the trough and crown preferably consist of stainless steel and these surfaces must be treated to ensure the alloy sticks to them. Such a surface, i.e. one having at least a portion thereof formed from a non-oxidizing metal, e.g. stainless steel, is treated so that a readily liquefiable alloy, e.g. the above eutectic, will stick to it by tinning the metal surface with a thin layer of said alloy in the presence of a chemically active or strong flux, then covering this surface with a thin layer of a soft flux. The surface thus covered is preheated to 80 DEG C., and the said alloy poured on to the prepared and preheated surface at a temperature of about 200 DEG C., and the whole is heated slowly at about 150 DEG C. to homogenize the various substances of the alloy and to remove the soft flux, whereafter the whole is cooled. Prior to tinning, the surfaces may if necessary be cleaned with an aqueous solution containing 2% HF and 10% HNO3 and heated to 60 DEG C., degreased with ethyl acetate and thoroughly washed with water. The tinning operation is performed by means of shaped, heated (340-400 DEG C.) irons), and the coating applied is 0.5-0.7 mm. thick. The surface being tinned is maintained horizontal by an appropriate jig. After tinning the surface is washed and a coating 0.3-0.4 mm. thick of the soft flux is applied. The chemically active strong flux used is preferably an aqueous solution of phosphoric acid containing a small quantity of ammonium chloride, and the preferred soft flux is alcoholized colophony. Other alloys suggested for use are Bi,Pb,SnCd, and Bi,Pb,Sn.
GB12234/62A 1961-04-14 1962-03-30 Improvements in or relating to processes for applying alloys to metal surfaces Expired GB1001301A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR858718A FR1295407A (en) 1961-04-14 1961-04-14 Improvements to the processes for making an alloy adhere to a metal surface and to the assemblies obtained by these processes

Publications (1)

Publication Number Publication Date
GB1001301A true GB1001301A (en) 1965-08-11

Family

ID=8753032

Family Applications (1)

Application Number Title Priority Date Filing Date
GB12234/62A Expired GB1001301A (en) 1961-04-14 1962-03-30 Improvements in or relating to processes for applying alloys to metal surfaces

Country Status (5)

Country Link
BE (1) BE616221A (en)
DE (1) DE1263233B (en)
FR (1) FR1295407A (en)
GB (1) GB1001301A (en)
LU (1) LU41523A1 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2045605A1 (en) * 1969-06-06 1971-03-05 Commissariat Energie Atomique Seal for a rotary cap of a reactor vessel
FR2470433A1 (en) * 1979-11-23 1981-05-29 Novatome Ind CLOSURE DEVICE FOR LIMITING CONVECTION CURRENTS IN ANNULAR SPACE AROUND A COMPONENT OF A NUCLEAR REACTOR
CN110270479A (en) * 2018-03-16 2019-09-24 波音公司 For applying method, equipment and the applicator of coating on the surface of laminate
CN112081832A (en) * 2020-09-18 2020-12-15 一重集团大连工程技术有限公司 Reactor reloading device with detachable bearing

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106531239A (en) * 2016-11-11 2017-03-22 中广核研究院有限公司 Dynamic sealing device of reactor top cover of heavy metal cooling reactor and sealing method thereof

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE219783C (en) *
AT139925B (en) * 1932-07-20 1934-12-27 Alfa Separator Ag Process for the manufacture of milk transport canoes.
US2013364A (en) * 1933-07-03 1935-09-03 Keystone Steel & Wire Co Method of coating iron or steel articles
DE677994C (en) * 1938-05-28 1939-07-06 Kueppers Metallwerk Kom Ges Solder
GB665480A (en) * 1949-04-29 1952-01-23 Glacier Co Ltd Improvements in or relating to plain bearings and to the manufacture thereof
DE924722C (en) * 1953-07-11 1955-03-07 Pintsch Bamag Ag Device for sealing apparatus parts against the atmosphere by means of immersion cups
BE567118A (en) * 1957-04-25

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2045605A1 (en) * 1969-06-06 1971-03-05 Commissariat Energie Atomique Seal for a rotary cap of a reactor vessel
FR2470433A1 (en) * 1979-11-23 1981-05-29 Novatome Ind CLOSURE DEVICE FOR LIMITING CONVECTION CURRENTS IN ANNULAR SPACE AROUND A COMPONENT OF A NUCLEAR REACTOR
EP0029781A1 (en) * 1979-11-23 1981-06-03 Novatome Closure device for limiting the convection currents in an annular space around a nuclear reactor component
CN110270479A (en) * 2018-03-16 2019-09-24 波音公司 For applying method, equipment and the applicator of coating on the surface of laminate
CN110270479B (en) * 2018-03-16 2022-09-20 波音公司 Method, apparatus and applicator for applying a coating on a surface of a laminate
CN112081832A (en) * 2020-09-18 2020-12-15 一重集团大连工程技术有限公司 Reactor reloading device with detachable bearing

Also Published As

Publication number Publication date
DE1263233B (en) 1968-03-14
LU41523A1 (en) 1962-06-09
FR1295407A (en) 1962-06-08
BE616221A (en) 1962-07-31

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