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
Application number
Other languages
French (fr)
Publication of BE501487A publication Critical patent/BE501487A/fr

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16KVALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K27/00Construction of housing; Use of materials therefor
    • F16K27/04Construction of housing; Use of materials therefor of sliding valves
    • F16K27/044Construction of housing; Use of materials therefor of sliding valves slide valves with flat obturating members
    • F16K27/047Construction of housing; Use of materials therefor of sliding valves slide valves with flat obturating members with wedge-shaped obturating members
    • CCHEMISTRY; METALLURGY
    • C23COATING 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
    • C23CCOATING 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
    • C23C4/00Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge
    • C23C4/04Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge characterised by the coating material
    • C23C4/06Metallic material
    • C23C4/08Metallic 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 

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 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

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 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)

RESUME La présente invention a pour objet le nouveau produit industriel que constitue une vanne pouvant être faite en bronzeen acier ou même en fonte (à l'exception de la vis et de l'écrou qui sont en acier inoxydable 18/8) et procurant cependant les mêmes avantages qu'une vanne entièrement faite en acier inoxydable, mais avec un prix de revient très notablement plus faible, grâce à 1'application,? par le procédé connu de métallisation au pistolet, sur les parties portantes de ladite vanne,d'une couche assez épaisse d'acier ino- xydable "18/8, couche que l'on usine après dépôt, et sur le passage du fluide à travers la vanne,d'une couche de nickel qui peut être plus mince que la couche d'acier inoxydable. ABSTRACT The present invention relates to the new industrial product which constitutes a valve which can be made of bronzed steel or even cast iron (with the exception of the screw and the nut which are made of 18/8 stainless steel) and yet providing the same advantages as a valve entirely made of stainless steel, but with a very noticeably lower cost price, thanks to the application ,? by the known method of metallization with a spray gun, on the bearing parts of said valve, a fairly thick layer of 18/8 stainless steel, a layer which is machined after deposition, and on the passage of the fluid to through the valve, a layer of nickel which may be thinner than the layer of stainless steel.
BE501487D BE501487A (en)

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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