LU84971A1 - PROCESS FOR MAKING REFRACTORY MATERIAL DEPOSITS USING A LASER - Google Patents
PROCESS FOR MAKING REFRACTORY MATERIAL DEPOSITS USING A LASER Download PDFInfo
- Publication number
- LU84971A1 LU84971A1 LU84971A LU84971A LU84971A1 LU 84971 A1 LU84971 A1 LU 84971A1 LU 84971 A LU84971 A LU 84971A LU 84971 A LU84971 A LU 84971A LU 84971 A1 LU84971 A1 LU 84971A1
- Authority
- LU
- Luxembourg
- Prior art keywords
- powder
- laser
- covered
- laser beam
- action
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims description 11
- 239000011819 refractory material Substances 0.000 title claims description 8
- 239000000843 powder Substances 0.000 claims description 23
- 238000010438 heat treatment Methods 0.000 claims description 6
- 239000004215 Carbon black (E152) Substances 0.000 claims description 3
- 238000000151 deposition Methods 0.000 claims description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 2
- 229930195733 hydrocarbon Natural products 0.000 claims description 2
- 150000002430 hydrocarbons Chemical class 0.000 claims description 2
- 229910052760 oxygen Inorganic materials 0.000 claims description 2
- 239000001301 oxygen Substances 0.000 claims description 2
- 239000011230 binding agent Substances 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 238000005266 casting Methods 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D41/00—Casting melt-holding vessels, e.g. ladles, tundishes, cups or the like
- B22D41/02—Linings
- B22D41/023—Apparatus used for making or repairing linings
-
- 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
- C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
- C04B41/45—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements
- C04B41/50—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements with inorganic materials
- C04B41/5025—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements with inorganic materials with ceramic materials
-
- 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
- C23C24/00—Coating starting from inorganic powder
- C23C24/08—Coating starting from inorganic powder by application of heat or pressure and heat
-
- 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
- C23C4/00—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge
- C23C4/12—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge characterised by the method of spraying
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Metallurgy (AREA)
- Ceramic Engineering (AREA)
- Plasma & Fusion (AREA)
- Physics & Mathematics (AREA)
- Inorganic Chemistry (AREA)
- Structural Engineering (AREA)
- Other Surface Treatments For Metallic Materials (AREA)
Description
Ir « t C 2264/8308.Ir 't C 2264/8308.
CENTRE DE RECHERCHES METALLURGIQUES -CENTRUM V00R RESEARCH IN DE METALLURGIE,METALLURGICAL RESEARCH CENTER -CENTRUM V00R RESEARCH IN DE METALLURGIE,
Association sans but lucratif -Vereniging zonder winstoogmerk à BRUXELLES, (Belgique).Non-profit association -Vereniging zonder winstoogmerk in BRUXELLES, (Belgium).
Procédé pour réaliser des dépôts de matières réfractaires utilisant un laser.Method for producing refractory material deposits using a laser.
La présente invention a trait à un procédé pour réaliser des dépôts de matières réfractaires utilisant un rayon laser; plus particulièrement d'application lors d'opérations de gunitage.The present invention relates to a method for producing refractory material deposits using a laser beam; more particularly of application during gunning operations.
L'invention décrite ci-après peut être mise en oeuvre dans tous les cas où l'on doit déposer une matière réfractaire sur un support en utilisant une source de chaleur qui agit sur la matière et/ou éventuellement sur le support pour les ramollir ou les faire fondre, ce qui a pour effet qu'ils adhèrent l'un à l'autre.The invention described below can be implemented in all cases where a refractory material must be deposited on a support using a heat source which acts on the material and / or possibly on the support to soften them or melt them, which has the effect that they adhere to each other.
tt
Toutefois, par souci de clarté et non pas dans un but restrictif, la description qui suit est surtout axée sur l'opération de gunitage telle qu'utilisée pour élaborer ou réparer le revêtement .¾ de certains récipients utilisés en sidérurgie comme par exemple les poches de coulée, les paniers répartiteurs de coulée con tinue, etc...However, for the sake of clarity and not for a restrictive purpose, the description which follows is mainly focused on the gunning operation as used to prepare or repair the coating. casting baskets, continuous pouring baskets, etc ...
- 2 - A l'heure actuelle, lors des opérations de dépôt ou de réparation de revêtements réfractaires, on utilise généralement un ca- non à poudre couplé à une source d'énergie telle qu'un brûleur à oxygène - hydrocarbure.- 2 - At present, during the operations of depositing or repairing refractory linings, a powder cannon is generally used coupled to an energy source such as an oxygen-hydrocarbon burner.
Le problème primordial est de porter la poudre à une température suffisamment élevée pour que la surface des grains de réfractaire soit fondue, alors que le noyau reste solide. Pour parer à cette difficulté, on a inclus à la poudre constituée d'une matière réfractaire de très bonne qualité, un liant possédant une température de fusion inférieure à celle de la matière réfractaire et qui aide à fixer cette matière sur le support à traiter. Il va de soi que la qualité globale du réfractaire ainsi obtenu est inférieure à celle que l'on aurait en utilisant une poudre composée en majorité de réfractaire noble avec peu de liant.The main problem is to bring the powder to a sufficiently high temperature so that the surface of the refractory grains is melted, while the core remains solid. To overcome this difficulty, a binder having a melting temperature lower than that of the refractory material and which helps to fix this material on the support to be treated has been included in the powder consisting of a very good quality refractory material. It goes without saying that the overall quality of the refractory thus obtained is lower than that which would be obtained by using a powder composed mainly of noble refractory with little binder.
Précisément, la présente invention permet d'utiliser une poudre comprenant un réfractaire très noble, donc à point de fusion très élevé, combiné à très peu de liant.Specifically, the present invention makes it possible to use a powder comprising a very noble refractory, therefore with a very high melting point, combined with very little binder.
Le procédé de dépôt de matières réfractaires, objet de la pré-* sente invention, est principalement caractérisé en ce qu'on a- mène au contact de la surface à recouvrir une poudre comprenant au moins un type de réfractaire et en ce que l'on fait subir à cette poudre un échauffement dû partiellement ou totalement à l'action d'un ou de plusieurs rayons lasers, appelés ci-après "rayon laser".The method of depositing refractory materials, object of the present invention, is mainly characterized in that it leads to contact with the surface to be covered with a powder comprising at least one type of refractory and in that the this powder is subjected to heating due partially or completely to the action of one or more laser beams, hereinafter called "laser beam".
/SL/ SL
yy
Suivant une première modalité de réalisation du procédé de la présente invention, le rayon laser est issu d'un laser du type fixe.According to a first embodiment of the method of the present invention, the laser beam comes from a laser of the fixed type.
- 3 -- 3 -
On pourrait penser que cette particularité présente 1'inconvénient d’imposer que l’on amène l'objet à traiter dans la proxi-« ‘ mité immédiate du laser fixe, mais quand on sait que la mise en opération d'un laser du type mobile de puissance intéressante pour notre application demande de l'ordre de deux jours, on comprend que cet inconvénient lié au laser fixe est moindre que le délai imposé par l*utilisation d'un laser mobile.One might think that this peculiarity has the disadvantage of imposing that the object to be treated is brought in the immediate vicinity of the fixed laser, but when we know that the putting into operation of a laser of the type mobile power interesting for our application request of the order of two days, we understand that this drawback associated with the fixed laser is less than the time imposed by the use of a mobile laser.
Suivant une autre modalité de réalisation,la poudre est projetée vers la surface à recouvrir et est échauffée pendant son trajet.According to another embodiment, the powder is projected towards the surface to be covered and is heated during its journey.
Suivant une troisième modalité de réalisation, la poudre est projetée vers la surface à recouvrir et est échauffée après son dépôt sur cette surface.According to a third embodiment, the powder is sprayed towards the surface to be covered and is heated after being deposited on this surface.
//
Suivant encore une autre modalité de réalisation, la surface à recouvrir subit l'action d'un rayon laser ou de tout moyen de chauffage; avant,pendant ou après l'apport de la poudre ou selon une quelconque combinaison de ces trois séquences.According to yet another embodiment, the surface to be covered undergoes the action of a laser beam or any heating means; before, during or after the addition of the powder or according to any combination of these three sequences.
.. Suivant une cinquième modalité de réalisation du procédé de la présente invention, la poudre est chauffée par un ou plusieurs - ‘ brûleurs à hydrocarbures et/ou oxygène en complément de l'ac tion d'un rayon laser... According to a fifth embodiment of the process of the present invention, the powder is heated by one or more - ‘hydrocarbon and / or oxygen burners in addition to the action of a laser beam.
Suivant une modalité de réalisation préférentielle, la poudre est projetée par un canon vers la surface à recouvrir; elle est chauffée par un brûleur qui peut éventuellement faire partie intégrante du canon à poudre et elle est soumise à l'action d'un rayon laser chauffant simultanément la poudre et la surface.According to a preferred embodiment, the powder is projected by a gun towards the surface to be covered; it is heated by a burner which may possibly be an integral part of the powder gun and it is subjected to the action of a laser beam simultaneously heating the powder and the surface.
i /i /
Claims (7)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| LU84971A LU84971A1 (en) | 1983-08-17 | 1983-08-17 | PROCESS FOR MAKING REFRACTORY MATERIAL DEPOSITS USING A LASER |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| LU84971 | 1983-08-17 | ||
| LU84971A LU84971A1 (en) | 1983-08-17 | 1983-08-17 | PROCESS FOR MAKING REFRACTORY MATERIAL DEPOSITS USING A LASER |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| LU84971A1 true LU84971A1 (en) | 1985-04-24 |
Family
ID=19730137
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| LU84971A LU84971A1 (en) | 1983-08-17 | 1983-08-17 | PROCESS FOR MAKING REFRACTORY MATERIAL DEPOSITS USING A LASER |
Country Status (1)
| Country | Link |
|---|---|
| LU (1) | LU84971A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2605310A1 (en) * | 1986-10-16 | 1988-04-22 | Comp Generale Electricite | PROCESS FOR REINFORCING CERAMIC PIECES BY LASER TREATMENT |
-
1983
- 1983-08-17 LU LU84971A patent/LU84971A1/en unknown
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2605310A1 (en) * | 1986-10-16 | 1988-04-22 | Comp Generale Electricite | PROCESS FOR REINFORCING CERAMIC PIECES BY LASER TREATMENT |
| EP0264779A1 (en) * | 1986-10-16 | 1988-04-27 | Alcatel | Process for the superficial treatment of ceramic articles with the aid of a laser |
| US4814575A (en) * | 1986-10-16 | 1989-03-21 | Compagnie Generale D'electricite | Method of surface-treating ceramic workpieces using a laser |
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