BE501487A - - Google Patents
Info
- Publication number
- BE501487A BE501487A BE501487DA BE501487A BE 501487 A BE501487 A BE 501487A BE 501487D A BE501487D A BE 501487DA BE 501487 A BE501487 A BE 501487A
- Authority
- BE
- Belgium
- Prior art keywords
- valve
- stainless steel
- layer
- nickel
- steel
- Prior art date
Links
- PXHVJJICTQNCMI-UHFFFAOYSA-N nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 10
- 229910001220 stainless steel Inorganic materials 0.000 claims description 9
- 239000010935 stainless steel Substances 0.000 claims description 9
- 229910052759 nickel Inorganic materials 0.000 claims description 5
- 229910001018 Cast iron Inorganic materials 0.000 claims description 4
- 229910000589 SAE 304 stainless steel Inorganic materials 0.000 claims description 4
- 239000012530 fluid Substances 0.000 claims description 3
- 229910000831 Steel Inorganic materials 0.000 claims description 2
- 238000001465 metallisation Methods 0.000 claims description 2
- 239000007921 spray Substances 0.000 claims description 2
- 239000010959 steel Substances 0.000 claims description 2
- 239000010410 layer Substances 0.000 description 9
- 238000000034 method Methods 0.000 description 3
- 239000002184 metal Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 229910000906 Bronze Inorganic materials 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000010974 bronze Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000005755 formation reaction Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000011241 protective layer Substances 0.000 description 1
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
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K27/00—Construction of housing; Use of materials therefor
- F16K27/04—Construction of housing; Use of materials therefor of sliding valves
- F16K27/044—Construction of housing; Use of materials therefor of sliding valves slide valves with flat obturating members
- F16K27/047—Construction of housing; Use of materials therefor of sliding valves slide valves with flat obturating members with wedge-shaped obturating members
-
- 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
- C23C4/04—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge characterised by the coating material
- C23C4/06—Metallic material
- C23C4/08—Metallic material containing only metal elements
Description
<Desc/Clms Page number 1>
VANNE A PASSAGE INOXYDABLE.
La présente invention a pour objet :
1 / !-'application du procédé connu de métallisation au pistolet à la formations, sur les parties portantes d'une vanne, d'une couche assez é- paisse d'acier inoxydable du type connu sous la désignation "18/8", couche que l'on usine après dépôt et, sur le passage da fluide à travers la vanne, d'une couche de nickel qui peut être plus mince que la couche d'acier inoxyda- ble;
2 / le nouveau produit industriel que constitue une vanne réalisée conformément au procédé spécifié sous lois vanne pouvant être faite en bronze, en acier ou même en fonte (à l'exception de la vis et de l'écrou qui sont en acier inoxydable 18/ et procurant cependant les mêmes avantages qu'une vanne entièrement faite en acier inoxydable mais avec un prix de revient très nota- blement plus faibleo
L'invention est applicable à des vannes diversestelles que les vannes à fermeture par opercules,, les vannes cylindro-sphériques, les vannes ovoides, les vannes à levier.
A titre d'illustration seulement, sans aucun caractère limitatif de la portée de l'invention, on va en décrire l'appli- cation à une vanne méplate ordinaire représentée en coupe sur la figure uni- que du dessin schématique annexée
Le corps 1, le couvercle 2, le coin 3, la boite à étoupe 4 et le presse-étoupe 5 de la vannede même que le volant de manoeuvre 6 peuvent être - faits en fonte etpar suiteavec des frais réduitsLa vis de manoeuvre 7 et son écrou 8 sont en acier inoxydable 18/8.
Dans des vannes de ce genre de construction courante, les par- ties portantes sont constituées par une bague de corps et par une bague de coin. Dans une vanne perfectionnée conformément à l'invention. ces bagues sont supprimées et sont remplacées par des couches 9 et 10 d'acier inoxyda- ble 18/8 projeté au pistolet et que l'on usine sur les faces destinées à venir
<Desc/Clms Page number 2>
en contact.
Lorsque les coins sont remplacés par des doubles opercules, on applique le même procédé et on supprime les bagues.
D'autre partles surfaces internes de la vanne formant le passage du fluide sont recouvertes par le même procédé d'une couche de nickel. Il en est de même de la surface externe du corps 1. Ces couches de nickel sont dé- signées par a sur le dessin.
Les couches 9 et 10 d'acier inoxydable ont une épaisseur notable, de l'ordre de 3 millimètres au moins., tandis que les couches a de nickel ont une épaisseur de l'ordre d'un demi-millimètre au moins.
On conçoit aisément que l'invention permette de réaliser une,ré- duction importante du prix de revient de la vanne ainsi perfectionnée, grâce à la possibilité qu'elle donne de réaliser un organe ayant les mêmes avantages qu'une vanne entièrement faite en métal inoxydable, par l'application de cou- ches protectrices sur les parties sujettes à la corrosion ou à l'usure, tout en utilisant, pour sa fabricationun métal de prix bas tel que la fonte.
<Desc / Clms Page number 1>
STAINLESS STEEL VALVE.
The present invention relates to:
1 /! - application of the known method of metallization with a gun to the formation, on the bearing parts of a valve, of a fairly thick layer of stainless steel of the type known under the designation "18/8", layer which is machined after deposition and, on the passage of the fluid through the valve, of a layer of nickel which may be thinner than the layer of stainless steel;
2 / the new industrial product that constitutes a valve produced in accordance with the process specified under the valve laws which can be made of bronze, steel or even cast iron (with the exception of the screw and nut which are made of stainless steel 18 / and however providing the same advantages as a valve made entirely of stainless steel but with a very notably lower cost price.
The invention is applicable to various valves such as shut-off valves, cylindro-spherical valves, ovoid valves, lever valves.
By way of illustration only, without any limiting nature of the scope of the invention, the application thereof to an ordinary flat valve shown in section in the single figure of the accompanying schematic drawing will be described.
The body 1, the cover 2, the wedge 3, the stuffing box 4 and the stuffing box 5 of the valve as well as the handwheel 6 can be - made of cast iron and by following with reduced costs The maneuvering screw 7 and its nut 8 are 18/8 stainless steel.
In valves of this type of current construction, the bearing parts consist of a body ring and a wedge ring. In an improved valve according to the invention. these rings are removed and replaced by layers 9 and 10 of 18/8 stainless steel sprayed with a spray gun and which are machined on the faces intended to come
<Desc / Clms Page number 2>
in touch.
When the corners are replaced by double seals, the same process is applied and the rings are removed.
On the other hand, the internal surfaces of the valve forming the passage for the fluid are covered by the same process with a layer of nickel. The same applies to the outer surface of the body 1. These nickel layers are denoted by a in the drawing.
The layers 9 and 10 of stainless steel have a significant thickness, of the order of at least 3 millimeters, while the layers a of nickel have a thickness of the order of at least half a millimeter.
It is easy to see that the invention makes it possible to achieve a significant reduction in the cost price of the valve thus improved, thanks to the possibility that it gives to producing a member having the same advantages as a valve made entirely of metal. stainless steel, by the application of protective layers on parts subject to corrosion or wear, while using, for its manufacture, a low-cost metal such as cast iron.
Claims (1)
Publications (1)
Publication Number | Publication Date |
---|---|
BE501487A true BE501487A (en) |
Family
ID=143293
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
BE501487D BE501487A (en) |
Country Status (1)
Country | Link |
---|---|
BE (1) | BE501487A (en) |
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0
- BE BE501487D patent/BE501487A/fr unknown
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