FR2594733A1 - Method for producing a tubular atomiser and atomiser obtained by this method - Google Patents
Method for producing a tubular atomiser and atomiser obtained by this method Download PDFInfo
- Publication number
- FR2594733A1 FR2594733A1 FR8602895A FR8602895A FR2594733A1 FR 2594733 A1 FR2594733 A1 FR 2594733A1 FR 8602895 A FR8602895 A FR 8602895A FR 8602895 A FR8602895 A FR 8602895A FR 2594733 A1 FR2594733 A1 FR 2594733A1
- Authority
- FR
- France
- Prior art keywords
- tube
- nozzle
- fins
- diffuser
- holes
- 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.)
- Pending
Links
Classifications
-
- 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
- B23K9/00—Arc welding or cutting
- B23K9/007—Spot arc welding
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P11/00—Connecting or disconnecting metal parts or objects by metal-working techniques not otherwise provided for
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
- B24C5/00—Devices or accessories for generating abrasive blasts
- B24C5/02—Blast guns, e.g. for generating high velocity abrasive fluid jets for cutting materials
- B24C5/04—Nozzles therefor
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Plasma & Fusion (AREA)
- Arc Welding In General (AREA)
Abstract
Description
On sait que pour certaines opérations on utilise des appareils pour projeter des billes très fines contre des surfaces à traiter ou à nettoyer. It is known that for certain operations, apparatus is used to project very fine balls against surfaces to be treated or cleaned.
Ces billes sont entrainees par un jet d'air comprime et elles traversent un diffuseur tubulaire comportant une buse interne à ailettes destinée à orienter l'ecoulement des billes et du flux d'air comprime.These balls are entrained by a jet of compressed air and they pass through a tubular diffuser comprising an internal nozzle with fins intended to direct the flow of the balls and of the compressed air flow.
La buse interieure comporte deux ou trois ailettes radiales (ou plus) qui determinent autant de passages en forme de haricot. The inner nozzle has two or three radial fins (or more) which determine as many bean-shaped passages.
Du fait de sa complexite, il est impossible d'envisager l'usinage par enlèvement de metal d'une telle pièce. Le seul moyen mecanique de la réaliser est le procédé d'électro-érosion après que l'on ait amorce l'alesage du diffuseur tubulaire jusqu'au droit des extremites avant et arrière de la buse. Il est evident que l'electrode destinee à la fabrication d'une telle pièce est particulièrement compliquee de telle sorte que son prix de revient est très eleve. De plus on sait que dans ce procède l'électrode s'use et qu'il faut donc vraisemblablement en prevoir plusieurs pour réaliser chaque diffuseur. Due to its complexity, it is impossible to envisage machining by removing metal from such a part. The only mechanical means of achieving this is the electro-erosion process after the bore of the tubular diffuser has been primed to the right of the front and rear ends of the nozzle. It is obvious that the electrode intended for the manufacture of such a part is particularly complicated so that its cost price is very high. In addition, we know that in this process the electrode wears out and that it is therefore probably necessary to provide several to make each diffuser.
Si l'on engage l'électrode à partir de l'extremite aval du diffuseur oriente vers le haut, les detritus ne peuvent pas s'eliminer facilement. If the electrode is engaged from the downstream end of the diffuser facing upwards, the detritus cannot be easily removed.
Si l'on place le diffuseur dans le sens oppose, c'est-a-dire avec son extremite aval orientee vers le bas et que ltélectrode soit elevee à l'intérieur de ce diffuseur, les détritus se coincent entre la paroi interne du diffuseur et l'electrode. If the diffuser is placed in the opposite direction, that is to say with its downstream end facing downwards and the electrode is elevated inside this diffuser, the detritus is trapped between the internal wall of the diffuser and the electrode.
Dans les deux cas, on risque également d'amorcer sur la longueur d'alésage qui est situee en aval de la buse. In both cases, there is also a risk of starting on the length of bore which is located downstream of the nozzle.
Les perfectionnements qui font l'objet de la présente invention visent à remédier à ces inconvénients et à permettre la mise en oeuvre d'un procéde de fabrication d'un tel diffuseur qui reponde particulièrement bien aux desidarata de la pratique. The improvements which are the subject of the present invention aim to remedy these drawbacks and to allow the implementation of a process for manufacturing such a diffuser which responds particularly well to the requirements of the practice.
Le procédé suivant l'invention consiste à
- aléser un tube
- percer des trous radiaux dans le tube ;
- realiser la buse par usinage usuel
- positionner cette buse au moyen d'un outillage adequat dans l'alesage du tube, les extrémités de ses ailettes se trouvant en vis-à-vis des trous radiaux
- souder les extrémités des ailettes et le tube en remplissant de soudure les trous de ce dernier
- et à rectifier l'exterieur du tube au niveau des soudures.The process according to the invention consists in
- ream a tube
- drill radial holes in the tube;
- realize the nozzle by usual machining
- position this nozzle by means of an adequate tool in the bore of the tube, the ends of its fins being located opposite the radial holes
- weld the ends of the fins and the tube by filling the holes in the latter with solder
- and to rectify the outside of the tube at the welds.
Ainsi le diffuseur tubulaire obtenu présente toutes les caracteristiques de résistance d'un diffuseur en une pièce, mais son prix de revient est nettement diminué. Thus, the tubular diffuser obtained has all the resistance characteristics of a one-piece diffuser, but its cost price is clearly reduced.
Le dessin annexe, donné à titre d'exemple, permettra de mieux comprendre l'invention, les caractéristiques qu'elle présente et les avantages qu'elle est susceptible de procurer
Fig. 1 est une coupe longitudinale partielle à grande échelle de la partie d'un diffuseur tubulaire établi conformément à l'invention.The accompanying drawing, given by way of example, will make it possible to better understand the invention, the characteristics which it presents and the advantages which it is likely to provide.
Fig. 1 is a partial longitudinal section on a large scale of the part of a tubular diffuser established in accordance with the invention.
Fig. 2 en est une coupe suivant Il-Il fig. 1. On y a represente en I-I le plan de coupe de fig. 1. Fig. 2 is a section along Il-Il fig. 1. There is shown in I-I the section plane of FIG. 1.
Le diffuseur tubulaire conforme à l'invention comprend un tube 1 renfermant une buse 2 comportant trois ailettes 2a orientées radialement vers l'extérieur d'un noyau central 2b. La forme des ailettes 2a est telle qu'elles déterminent entre elles des espaces 3 en forme de haricot. The tubular diffuser according to the invention comprises a tube 1 containing a nozzle 2 comprising three fins 2a oriented radially towards the outside of a central core 2b. The shape of the fins 2a is such that they determine between them spaces 3 in the form of a bean.
La buse 2 comporte encore sur sa face tournee vers l'amont une torpille 2c guidant le flux de billes et d'air vers les espaces 3. The nozzle 2 also has on its face turned upstream a torpedo 2c guiding the flow of balls and air towards the spaces 3.
On a référencé la l'alésage intérieur du tube 1. The internal bore of the tube 1 has been referenced.
Conformément au procédé suivant l'invention on perce dans le tube 1, trois paires de trous lb de manière que les deux trous de chaque paire soient situés en tandem dans la direction axiale et que les paires de trous soient orientées à 1200 (dans le cas de trois ailettes par exemple) les unes par rapport aux autres de manière qutaprès avoir introduit la buse 2 dans l'alésage la on puisse amener l'extremite des trois ailettes 2a de cette buse en vis-à-vis des trous lb. In accordance with the process according to the invention, three pairs of holes 1b are drilled in the tube 1 so that the two holes of each pair are located in tandem in the axial direction and the pairs of holes are oriented at 1200 (in the case of three fins for example) relative to each other so that after having introduced the nozzle 2 into the bore, it is possible to bring the end of the three fins 2a of this nozzle opposite the holes lb.
Conformément à l'invention, on exécute dans les trous lb une soudure de manière à les remplir de métal d'apport afin de solidariser fermement la buse 2 et le tube 1. According to the invention, a weld is made in the holes 1b so as to fill them with filler metal in order to firmly join the nozzle 2 and the tube 1.
Dans le cas ou le tube et la buse sont réalisés en acier allié inoxydable ou autre, il va de soi que la soudure est une soudure à l'arc sous argon avec métal d'apport connue sous la dénomination 'TIC. On obtient alors la pièce illustrée en fig. 1 et 2. In the case where the tube and the nozzle are made of alloyed stainless steel or other, it goes without saying that the weld is an arc weld under argon with filler metal known under the name 'TIC. We then obtain the part illustrated in fig. 1 and 2.
La dernière opération å effectuer est une rectification extérieure du tube 1 de manière à faire disparattre l'excédent de soudure. The last operation to be carried out is an external rectification of the tube 1 so as to make the excess weld disappear.
Le diffuseur peut alors être monté par exemple en vissant une tige 4 dans le trou central taraudé 2d de manière à fixer en bout de cette tige les autres pièces de l'appareil. The diffuser can then be mounted for example by screwing a rod 4 into the tapped central hole 2d so as to fix the other parts of the device at the end of this rod.
On a ainsi réalisé un diffuseur tubulaire bon marche et présentant toutes les conditions requises par la technique consideree. There was thus produced a cheap tubular diffuser and having all the conditions required by the technique considered.
Il doit d'ailleurs être entendu que la description qui précède n'a été donnee qu'a titre d'exemple et qu'elle ne limite nullement le domaine de l'invention dont on ne sortirait pas en remplaçant les details d'execution decrits par tous autres equivalents. It should moreover be understood that the foregoing description has been given only by way of example and that it in no way limits the field of the invention from which one would not depart by replacing the execution details described by all other equivalents.
Claims (5)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR8602895A FR2594733A1 (en) | 1986-02-26 | 1986-02-26 | Method for producing a tubular atomiser and atomiser obtained by this method |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR8602895A FR2594733A1 (en) | 1986-02-26 | 1986-02-26 | Method for producing a tubular atomiser and atomiser obtained by this method |
Publications (1)
Publication Number | Publication Date |
---|---|
FR2594733A1 true FR2594733A1 (en) | 1987-08-28 |
Family
ID=9332672
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR8602895A Pending FR2594733A1 (en) | 1986-02-26 | 1986-02-26 | Method for producing a tubular atomiser and atomiser obtained by this method |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR2594733A1 (en) |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB191514014A (en) * | 1915-10-04 | 1919-03-20 | James Morris | Improvements in Nozzles for Discharging Liquids. |
US1363157A (en) * | 1920-07-03 | 1920-12-21 | Jr Thomas E Murray | Electrically-welded tube and method of making the same |
GB291304A (en) * | 1927-12-10 | 1928-05-31 | Triumph Cycle Co Ltd | Improvements in and relating to welding processes |
US2562930A (en) * | 1949-06-09 | 1951-08-07 | Specialties Dev Corp | Dry powder fire-extinguishing medium discharge and directing apparatus |
US2724173A (en) * | 1950-06-12 | 1955-11-22 | Girard Alexandre Auguste Leon | Method of manufacturing pressure chambers |
US4218855A (en) * | 1978-12-08 | 1980-08-26 | Otto Wemmer | Particulate spray nozzle with diffuser |
-
1986
- 1986-02-26 FR FR8602895A patent/FR2594733A1/en active Pending
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB191514014A (en) * | 1915-10-04 | 1919-03-20 | James Morris | Improvements in Nozzles for Discharging Liquids. |
US1363157A (en) * | 1920-07-03 | 1920-12-21 | Jr Thomas E Murray | Electrically-welded tube and method of making the same |
GB291304A (en) * | 1927-12-10 | 1928-05-31 | Triumph Cycle Co Ltd | Improvements in and relating to welding processes |
US2562930A (en) * | 1949-06-09 | 1951-08-07 | Specialties Dev Corp | Dry powder fire-extinguishing medium discharge and directing apparatus |
US2724173A (en) * | 1950-06-12 | 1955-11-22 | Girard Alexandre Auguste Leon | Method of manufacturing pressure chambers |
US4218855A (en) * | 1978-12-08 | 1980-08-26 | Otto Wemmer | Particulate spray nozzle with diffuser |
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