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 surfacesInfo
- 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
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.
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)
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)
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)
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 |
-
1961
- 1961-04-14 FR FR858718A patent/FR1295407A/en not_active Expired
-
1962
- 1962-03-30 GB GB12234/62A patent/GB1001301A/en not_active Expired
- 1962-04-05 DE DEC26671A patent/DE1263233B/en active Pending
- 1962-04-09 LU LU41523D patent/LU41523A1/xx unknown
- 1962-04-10 BE BE616221A patent/BE616221A/en unknown
Cited By (6)
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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