CA1086036A - Method of attachment of a metallic end-piece to a tubular element - Google Patents

Method of attachment of a metallic end-piece to a tubular element

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Publication number
CA1086036A
CA1086036A CA265,584A CA265584A CA1086036A CA 1086036 A CA1086036 A CA 1086036A CA 265584 A CA265584 A CA 265584A CA 1086036 A CA1086036 A CA 1086036A
Authority
CA
Canada
Prior art keywords
ceramic
piece
tubular element
metallic
ceramic product
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
CA265,584A
Other languages
French (fr)
Inventor
Jean Charpin
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
Application granted granted Critical
Publication of CA1086036A publication Critical patent/CA1086036A/en
Expired legal-status Critical Current

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Classifications

    • 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
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L58/00—Protection of pipes or pipe fittings against corrosion or incrustation
    • F16L58/18—Protection of pipes or pipe fittings against corrosion or incrustation specially adapted for pipe fittings
    • F16L58/181—Protection of pipes or pipe fittings against corrosion or incrustation specially adapted for pipe fittings for non-disconnectible pipe joints
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
    • B01D29/11—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with bag, cage, hose, tube, sleeve or like filtering elements
    • B01D29/111—Making filtering elements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
    • B01D29/11—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with bag, cage, hose, tube, sleeve or like filtering elements
    • B01D29/31—Self-supporting filtering elements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D63/00—Apparatus in general for separation processes using semi-permeable membranes
    • B01D63/06—Tubular membrane modules
    • B01D63/061—Manufacturing thereof
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B37/00—Joining burned ceramic articles with other burned ceramic articles or other articles by heating
    • C04B37/02—Joining burned ceramic articles with other burned ceramic articles or other articles by heating with metallic articles
    • C04B37/023—Joining burned ceramic articles with other burned ceramic articles or other articles by heating with metallic articles characterised by the interlayer used
    • C04B37/025—Joining burned ceramic articles with other burned ceramic articles or other articles by heating with metallic articles characterised by the interlayer used consisting of glass or ceramic material
    • 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
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L9/00—Rigid pipes
    • F16L9/14—Compound tubes, i.e. made of materials not wholly covered by any one of the preceding groups
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/65—Aspects relating to heat treatments of ceramic bodies such as green ceramics or pre-sintered ceramics, e.g. burning, sintering or melting processes
    • C04B2235/66—Specific sintering techniques, e.g. centrifugal sintering
    • C04B2235/665—Local sintering, e.g. laser sintering
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2237/00—Aspects relating to ceramic laminates or to joining of ceramic articles with other articles by heating
    • C04B2237/30—Composition of layers of ceramic laminates or of ceramic or metallic articles to be joined by heating, e.g. Si substrates
    • C04B2237/32—Ceramic
    • C04B2237/34—Oxidic
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2237/00—Aspects relating to ceramic laminates or to joining of ceramic articles with other articles by heating
    • C04B2237/30—Composition of layers of ceramic laminates or of ceramic or metallic articles to be joined by heating, e.g. Si substrates
    • C04B2237/32—Ceramic
    • C04B2237/34—Oxidic
    • C04B2237/343—Alumina or aluminates
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2237/00—Aspects relating to ceramic laminates or to joining of ceramic articles with other articles by heating
    • C04B2237/30—Composition of layers of ceramic laminates or of ceramic or metallic articles to be joined by heating, e.g. Si substrates
    • C04B2237/32—Ceramic
    • C04B2237/34—Oxidic
    • C04B2237/345—Refractory metal oxides
    • C04B2237/348—Zirconia, hafnia, zirconates or hafnates
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2237/00—Aspects relating to ceramic laminates or to joining of ceramic articles with other articles by heating
    • C04B2237/30—Composition of layers of ceramic laminates or of ceramic or metallic articles to be joined by heating, e.g. Si substrates
    • C04B2237/32—Ceramic
    • C04B2237/36—Non-oxidic
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2237/00—Aspects relating to ceramic laminates or to joining of ceramic articles with other articles by heating
    • C04B2237/30—Composition of layers of ceramic laminates or of ceramic or metallic articles to be joined by heating, e.g. Si substrates
    • C04B2237/40—Metallic
    • C04B2237/403—Refractory metals
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2237/00—Aspects relating to ceramic laminates or to joining of ceramic articles with other articles by heating
    • C04B2237/30—Composition of layers of ceramic laminates or of ceramic or metallic articles to be joined by heating, e.g. Si substrates
    • C04B2237/40—Metallic
    • C04B2237/405—Iron metal group, e.g. Co or Ni
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2237/00—Aspects relating to ceramic laminates or to joining of ceramic articles with other articles by heating
    • C04B2237/50—Processing aspects relating to ceramic laminates or to the joining of ceramic articles with other articles by heating
    • C04B2237/59—Aspects relating to the structure of the interlayer
    • C04B2237/592—Aspects relating to the structure of the interlayer whereby the interlayer is not continuous, e.g. not the whole surface of the smallest substrate is covered by the interlayer
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2237/00—Aspects relating to ceramic laminates or to joining of ceramic articles with other articles by heating
    • C04B2237/50—Processing aspects relating to ceramic laminates or to the joining of ceramic articles with other articles by heating
    • C04B2237/62—Forming laminates or joined articles comprising holes, channels or other types of openings
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2237/00—Aspects relating to ceramic laminates or to joining of ceramic articles with other articles by heating
    • C04B2237/50—Processing aspects relating to ceramic laminates or to the joining of ceramic articles with other articles by heating
    • C04B2237/70—Forming laminates or joined articles comprising layers of a specific, unusual thickness
    • C04B2237/706—Forming laminates or joined articles comprising layers of a specific, unusual thickness of one or more of the metallic layers or articles
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2237/00—Aspects relating to ceramic laminates or to joining of ceramic articles with other articles by heating
    • C04B2237/50—Processing aspects relating to ceramic laminates or to the joining of ceramic articles with other articles by heating
    • C04B2237/70—Forming laminates or joined articles comprising layers of a specific, unusual thickness
    • C04B2237/708—Forming laminates or joined articles comprising layers of a specific, unusual thickness of one or more of the interlayers
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2237/00—Aspects relating to ceramic laminates or to joining of ceramic articles with other articles by heating
    • C04B2237/50—Processing aspects relating to ceramic laminates or to the joining of ceramic articles with other articles by heating
    • C04B2237/72—Forming laminates or joined articles comprising at least two interlayers directly next to each other
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2237/00—Aspects relating to ceramic laminates or to joining of ceramic articles with other articles by heating
    • C04B2237/50—Processing aspects relating to ceramic laminates or to the joining of ceramic articles with other articles by heating
    • C04B2237/76—Forming laminates or joined articles comprising at least one member in the form other than a sheet or disc, e.g. two tubes or a tube and a sheet or disc
    • C04B2237/765—Forming laminates or joined articles comprising at least one member in the form other than a sheet or disc, e.g. two tubes or a tube and a sheet or disc at least one member being a tube

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Ceramic Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Structural Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Filtering Materials (AREA)
  • Ceramic Products (AREA)
  • Physical Or Chemical Processes And Apparatus (AREA)
  • Physical Vapour Deposition (AREA)
  • Coating By Spraying Or Casting (AREA)
  • Filtering Of Dispersed Particles In Gases (AREA)

Abstract

A METHOD OF ATTACHMENT OF A METALLIC
END PIECE TO A TUBULAR ELEMENT
Abstract of the Disclosure The method of attachment of a metallic end-piece to the end portion of a tubular element and especially a filter of ceramic material essentially consists in depositing a layer of ceramic product at the end portion of the tubular element by spray-coating in the hot state and in bonding the metallic end-piece to the end portion by spraying a ceramic or metallic substance in the hot state.

Description

86~36 : This invention is concerned with a method of attach-ment of an end-piece to a tubular element and is more . especially applicable to the attachmen-t of a metallic end-piece to a tubular filter of ceramic material.
- In order to carry out the attachment of a tubular filter element and especially an element of ceramic material to a filter support of any predetermined type, it is an advantage to provide the filter with an end-piece which is preferably metallic and which can subsequently be readily secured by welding, brazing or tube-expanding in the filter : support. This operation gives rise to difficulties, however, since the joint formed between the tubular filter 2nd the end-piece must on the one hand be mechanically sound and on the other hand ensure suitable leak-tightness at the level of ;- the joint. In particular, it is absolutely necessary to ensure that this joint does not have any flaws such as cracks or open porosities which would be liable to modify the overall permeability of the filter employed.
The method in accordance with the present invention make~ i~ possible to connect a tubular element and especially .: a ~lbular filter to an end~piece by means of a joint having high mechanical strength, a very high degree o~ leak~tiyhtness and excellent corrosion resi.stance, especially with respect to ~luorine derivativesO This methol is therefore of great value for securlng to a support a composite tubu~ar filter element o~ ceramic material and of small thickness, a filter o~ this type being intended to be employed in particular ior the separation of uranium isotopes by gaseous ~i~fusion and ~or the separation of hydrocarbons in the petrochemical .30 industryD
To this end, the method under consideration .

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essentially consists in depositing a layer of a ceramic product at the end portion of the tubular element by spray-coating in the hot state and in bonding the metallic end-piece to said end portion by spraying a ceramic or metallic substance in the hot state.
; In order to obtain perf~ct leak-tightness at the - level of the joint formed between the filter and the end-piece, the entire end portion of the filter must be coated with a compact, homogeneous and impermeable lay0r of ceramic material. In other words, the internal end portion, the external end portion and the end face of the filter must be coated with the ceramic layer. Deposition of said layer of ceramic product and bonding of the end~piece can be carriea out in one or a number of steps. Pre~erably, the determina tion of the number of operations of deposition and/or of bonding is selected as a function of :
- the fragility of the filtert which must not be subjected to any thermal shock or be liable as a con~equence :., ;~ to undergo impair~ent of its mechanical or permeametric - 20 characteristics~

- the nature and thickness of the spray~coatings for - deposition and/or bonding which determine the spraying means to be adopted~ the angle and the spraying distance a~d the '. - .
,- gaseous mixture~ to be employed, - the permeametric characteristics of the filter and end-piece assemblies obtained which must not be lower in - value than the characteristics of uncoated filters.
;~ In orler to carry out the spraying of the ceramic prod1ct and of the c~ramic or metallic bonding substancer :Lt ,30 ~ is possible for example to adopt a plasma-spray torch or a flame-spray torch~ The ceramic product employed at the time ~3-~ ` , `

6a~36 of deposition on the filter can be the same as the ceramic substance employed for bonding the metallic end-pieceO Simi-larly, the spraying means employed can be the same or the formation of the deposit and for the bonding operation.
Finally and in accordance with an important feature, both the filter and the filter and end-piece assembly are subjected to a movement of rotation during the spraying of the layer of ceramic product and during the bonding of the end-piece.
Among the ceramic products and the ceramic substances employea, it is possible in particular to choose from alumina~
zirconia, manganese dioxide, titanium oxide, calcium fluoride, magnesium oxide, the mixed oxides such as A1203, MgO, the aluminates of metals selected from magnesium, nickel, cobalt and chromium. As can readily be understood, these products and substances are selected as a function of the end products to be obtained.
A number of different examples relating to the practical application of the method of attachment o~ a tubular -~ end-piece in aGcordance with the invention are described hereinafter without an~ limitation ~einy implied, reference being made to the accompanying diagrammatic figures, in which :
- Fig. 1 illustrates the practical application oE
the first step of the method i Fig. 2 is a sectional view of one end of a composite tubular filter coated with a layer of ceramic product , - Fig. 3 illustrates the practical application of the second step of the method ;
` - Fig~ 4 is a sectional view of the end-piece which is se~ured to the composite tubular filter.
The components illustrated in the drawings are limited solely to those which are necessary in order to gain . :

, ~, . .

~L~81~36 '- a clear understanding of the invention and are designated by the same reference numerals in each figure.
~ Fig. 1 shows a macroporous cylindrical tube l which '' is formed of ceramic material and the internal sur~ace of which is lined with a microporous lay~r 2, said tube being open at the end on which it is desired to fix a tubular end piece.
:
Fig. 1 also illustrates the tube 1 which is fitted internally in the vicinity of said open end with a removable shield 3 preferably formed of flexible material such as rubber, and r 10 externally with a screen 5 through which the tubular element passes. Said shield and said screen prevent a ceramic product which is sprayed onto the end of th~ tube 1 by means of spray~
torches 6`from being depositel over an exce~si~e area o~ the tube 1 and of the microporous layer 2 of this latter.
In Fig. 2, the -tube 1 provided with the microporous layer 2 is illustrated in the form in which it is obtained after spraying of the ceramic product. Said product thus orms a surface coating~ the external portion of which is shown at 7, the internal portion at 4 and the end face at 8~
In Fign 3, the metallic end-piece 9 to be secured to the tube 1 is placed against the end portion of th~ ~ube 1 and of the layer 2 to which the coatings 4~ 7 and 8 h~ve p~eviou~
ly be~n applied a~ de~cribed in the foregoin~. rrorches 6' whlch are identical with or di~ferent from the torche~ 6 then spray a ceramic or'metallic substance onto the assembly thus ~ormed, with'the'result that the components of the assen~ly are thus bonded' together.
Finally, 'it is apparent that the tube 1 as illus~
trated in FigO 4 is bonded to the metallic en~ piece ~ by , . .
` 30" means o~ the layer 10 of sprayed substance obtained in ~' accordance wlth -the'me~hod'descr'ibed in the foregoing.

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~: .

~0~36~36 . .
; A few explanatory details in regard to the practical application of the method according to the invention will be given below by way of example.
~ n alumina coating 0.3 mm in thickness is sprayed in 900 passes by means of flame spray torches on a tubular ~ilter of ceramic material 20 mm in diameter and 500 mm in length which rotates about its own axis at a speed of 3.3 revolutions per second. The alumina spray-coating passes are ; separated by stationary periods each lasting 1 second during which the filter is allowed to cOOlr A metallic end-piece is then fitted in position against said filter. Rotational i motion is resumed and an alumina coating 0.6 mm in thickness is then again deposited by spraying in 1800 passes by means of the same ~lame-spray guns~ In this second step, a stationary period o~ 1 second duration is also observed between each spray-coating pass. The assembly thus ob~ained is strictly leak-tight under an internal pressure o~ 2 bar and has a tensile strength which is highe~ than 900 newton. 5ince the cerami~-ceramic bond thus formed is homogeneous, it does not apply any binding stress and can be employed to useful purpose in installations in which temperatures ar~ liable to rise to approxlmately 600C whereas an aluminum-aluminum bond cannot be employed at temperatures above 200C.

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Claims (7)

The embodiments of the invention in which an exclu-sive property or privilege is claimed are defined as follows:
1. A method of attachment of a metallic end-piece to the end portion of a tubular element and especially a filter of ceramic material, wherein said method consists in depositing a layer of a ceramic product at the end portion of the tubular element by spray-coating in the hot state, in engaging the end-piece coaxially with the end portion of the tubular element and in bonding the metallic end-piece to said end portion by spraying a ceramic or metallic substance in the hot state at the outer periphery of the contact area where the metallic end-piece and said end portion meet.
2. A method according to Claim 1, wherein deposition of the ceramic product and bonding with the ceramic or metallic substance are each carried out in one or a number of steps.
3. A method according to Claim 1, wherein the tubular element and the metallic end-piece are subjected to a movement of rotation during spraying of the ceramic product and of the ceramic or metallic substance.
4. A method according to Claim 1, wherein said method consists in making use of a ceramic product and a ceramic substance which are identical.
5. A method according to Claim 1, wherein the ceramic product and the ceramic or metallic substance are selected from alumina, zirconia, manganese dioxide, titanium oxide, calcium fluoride, magnesium oxide, the mixed oxides such as Al2O3, MgO, the aluminates of metals selected from magnesium, nickel, cobalt and chromium.
6. A method according to Claim 1, wherein a removable shield is placed internally in the vicinity of the end of the tubular element and a screen traversed by the element is placed externally so as to limit the surface area of the element which is coated with the deposit of ceramic product.
7. A device for carrying out the method according to Claim 1, wherein said device comprises torches for spraying the ceramic product and the ceramic or metallic substance, a removable shield and a screen mounted respectively internally and externally of the tubular element in order to limit the surface area coated with the deposit of ceramic product sprayed by the torches, means for imparting rotational motion to the tubular element alone during spraying of the ceramic product and to the tubular element and the end-piece during spraying of the ceramic or metallic substance and means whereby the periods during which the product or the substance undergoes spraying by the torches take place in alternate sequence with stationary periods for cooling purposes.
CA265,584A 1975-11-14 1976-11-09 Method of attachment of a metallic end-piece to a tubular element Expired CA1086036A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR7534869A FR2331534A1 (en) 1975-11-14 1975-11-14 PROCESS FOR FIXING A METAL END TO A TUBULAR ELEMENT
FR7534869 1975-11-14

Publications (1)

Publication Number Publication Date
CA1086036A true CA1086036A (en) 1980-09-23

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
CA265,584A Expired CA1086036A (en) 1975-11-14 1976-11-09 Method of attachment of a metallic end-piece to a tubular element

Country Status (12)

Country Link
JP (1) JPS5929547B2 (en)
AU (1) AU502776B2 (en)
BE (1) BE848046A (en)
BR (1) BR7607558A (en)
CA (1) CA1086036A (en)
CH (1) CH605467A5 (en)
DE (1) DE2651748A1 (en)
ES (1) ES453322A1 (en)
FR (1) FR2331534A1 (en)
GB (1) GB1522270A (en)
IT (1) IT1064313B (en)
SE (1) SE7612688L (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2642328B1 (en) * 1989-01-27 1991-04-12 Ceramiques Tech Soc D METHOD FOR ASSEMBLING A RIGID ELEMENT WITH A SEPARATING, FILTERING, OR CATALYTIC TRANSFORMATION MEMBRANE IN A MODULE
US20040065606A1 (en) * 2001-01-18 2004-04-08 Geert Devooght Assembly comprising a permeable medium and a frame

Also Published As

Publication number Publication date
JPS5929547B2 (en) 1984-07-21
AU502776B2 (en) 1979-08-09
FR2331534A1 (en) 1977-06-10
BE848046A (en) 1977-03-01
AU1954976A (en) 1978-05-18
FR2331534B1 (en) 1979-09-21
BR7607558A (en) 1977-09-27
SE7612688L (en) 1977-05-15
GB1522270A (en) 1978-08-23
IT1064313B (en) 1985-02-18
JPS5278209A (en) 1977-07-01
DE2651748A1 (en) 1977-05-18
ES453322A1 (en) 1977-12-16
CH605467A5 (en) 1978-09-29

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