US3185551A - Process for manufacturing a tubular body made of synthetic material, and installation for carrying out this process - Google Patents

Process for manufacturing a tubular body made of synthetic material, and installation for carrying out this process Download PDF

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Publication number
US3185551A
US3185551A US33299A US3329960A US3185551A US 3185551 A US3185551 A US 3185551A US 33299 A US33299 A US 33299A US 3329960 A US3329960 A US 3329960A US 3185551 A US3185551 A US 3185551A
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US
United States
Prior art keywords
axis
blow
rotatable support
pipe
respect
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Expired - Lifetime
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US33299A
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English (en)
Inventor
Djevahirdjian Vahan
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.)
IND DE PIERRES SCIENT HRAND DJ
INDUSTRIE DE PIERRES SCIENTIFIQUES HRAND DJEVAHIRDJIAN SA
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IND DE PIERRES SCIENT HRAND DJ
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    • C—CHEMISTRY; METALLURGY
    • C30—CRYSTAL GROWTH
    • C30B—SINGLE-CRYSTAL GROWTH; UNIDIRECTIONAL SOLIDIFICATION OF EUTECTIC MATERIAL OR UNIDIRECTIONAL DEMIXING OF EUTECTOID MATERIAL; REFINING BY ZONE-MELTING OF MATERIAL; PRODUCTION OF A HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; SINGLE CRYSTALS OR HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; AFTER-TREATMENT OF SINGLE CRYSTALS OR A HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; APPARATUS THEREFOR
    • C30B11/00—Single-crystal growth by normal freezing or freezing under temperature gradient, e.g. Bridgman-Stockbarger method
    • C30B11/04—Single-crystal growth by normal freezing or freezing under temperature gradient, e.g. Bridgman-Stockbarger method adding crystallising materials or reactants forming it in situ to the melt
    • C30B11/08—Single-crystal growth by normal freezing or freezing under temperature gradient, e.g. Bridgman-Stockbarger method adding crystallising materials or reactants forming it in situ to the melt every component of the crystal composition being added during the crystallisation
    • C30B11/10—Solid or liquid components, e.g. Verneuil method
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S117/00—Single-crystal, oriented-crystal, and epitaxy growth processes; non-coating apparatus therefor
    • Y10S117/901—Levitation, reduced gravity, microgravity, space
    • Y10S117/902—Specified orientation, shape, crystallography, or size of seed or substrate
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T117/00—Single-crystal, oriented-crystal, and epitaxy growth processes; non-coating apparatus therefor
    • Y10T117/10—Apparatus
    • Y10T117/1024—Apparatus for crystallization from liquid or supercritical state
    • Y10T117/1028—Crucibleless apparatus having means providing movement of discrete droplets or solid particles to thin-film precursor [e.g., Verneuil method]

Definitions

  • the present invention relates to a process for manufacturing a tubular body made of synthetic material, by melting a powdery material and accumulating this material on a rotatable support.
  • the invention relates also to an installation for carrying out this process, comprising a stove inner which is arranged a rotatable support on which the melting material intended to constitute the said tubular body of synthetic stone is accumulated.
  • the process is characterised by the feature that one projects powdery material on a support, while this material is incorporated to the flame of a blow-pipe substan tially parallel to the axis of rotation of the support, but excentric with respect thereto, and that one uses a second blow-pipe, the axis of which is oblique with respect to the axis of the first one, and the flame of which is directed onto the surface where the melted material forms a deposit, at
  • the drawing shows, by way of example, one embodiment of the object of the invention.
  • FIG. 1 is an elevational view, with partial section, of an installation for manufacturing a tubular body made of synthetic stone.
  • PEG. 2 is a view of a detail of FIG. 1, with partial section, at an enlarged scale.
  • FIG. 3 is a sectional view of a detail of FIG. 1, alon line III-J11 of FIG. 1.
  • FIG. 4 is a sectional view along line 1VIV of FIG. 1, and, a j h
  • FIG. 5 is a view of a detail at an enlarged scale, showing the position of the tube in formation with respect to the blow-pipes.
  • the installation represented comprises aframe 1 carrying a pillar 20h which is secured a collar 3.
  • a table 4 bears, by means of a sleeve 4a, on the collar 3. This table is thus held in height, while being ableto rotate CARRYING OUT THIS on the pillar 2.
  • the table4 carries a stove 5 made of fire-proof'material, on which is located a cover 6, likely made of fire-proof material.
  • the pillar 2 carries moreover, secured to a. support 7, two blow-pipes, one of which, designated generally by 8,
  • the blow-pipe 8 when the installation is. seen as in FIG. 1.
  • the blow-piped of the so-called Verneuil type, comprises a container 10, containing alu- "ice mina powder.
  • the bottom 11 of this container is consituted by a siever and its cover 12 is stroken by a hammer 13, at a rate of several strikes per second.
  • a certain quantity of the powder contained in the container 10 falls into a tundish 14- located under this container.
  • This tundish is prolongated upwards by an envelope 14a surrounding the container 10, in which opens apipe 15 for the induction of oxygen; downwards, this tundish 14 is prolongated by a pipe 141) surrounded by a pipe 16 in which opens a pipe 17 for the induction of hydrogen.
  • the blow-pipe 8 thus produces a hydrogenoxygen flame in which is incorporated alumina powder.
  • the second blow-pipe is of the same type, with the difference that it does not comprise dispensing means for powder.
  • the pillar 2 carries a bracket 18, supported by a rod 19, and on which lies a table 20 carrying on the one hand a rotative shaft 21, parallel to the pillar 2, and on the other hand a motor 22 driving this shaft by means of a belt 23.
  • the table 2% carries moreover a rod 24 extending freely through a hole 25 of the table 4.
  • the table 20 thus can move axially along the pillar 2, independently from the table 4, but is dependent therefrom angularly.
  • This shaft 26 carries, at its other hand, a control wheel 28.
  • the gear 27 meshes with the teeth of a toothed sector 20a (PEG. 4) of the table 20.
  • PEG. 4 a toothed sector 20a
  • the tubular body it is desired to be formed is obtained by projecting alumina powder on a support -31 (FIG. 3), made of fireproof material or of corundum, mounted at the extremity of the shaft 21. Owing to the fact that the blow-pipe 8 is slightly eccentric with respect to the axis of the shaft 21, the body 7 3% obtained is hollow. The second blow-pipe blows the melted alumina so as to prevent it from moving towards the centre.
  • the support 31 will have the shape of a small ball of a diameter corresponding to the diameter of the tube it is desired to be obtained; for tubes of a relatively large diameter, the support can have the shape of a sheave or of a ring.
  • the support is constituted by a germ or a seed, it is to say by a crystal having the same orientation as the crystal it is desired to be obtained.
  • the experience has shown that theoptical axis of the seed ought to form, preferably, an angle of 20 to 30 wih the growth axis. When modifying this angle, it is possible to form bodies of several outer shapes. Thus, with an angle of for instance, it is possible to obtain a tube of rectangular outer section.
  • the bracket 18, with the table 26 moves downward alongthe pillar 2,, as the body 39 increases -in size. This movement is obtained owing to a motor 32 carried by the'frame 1 of the apparatus and driving, through a belt 33, agear 34 meshing with a toothed rack 35 provided on the rod19.
  • the installation can be provided with means allowing to impell to the support 31, in additionanufacturing a: tubular body the said material on a rotatable support extending into an inner chamber of a stove which includes a first blow-pipe, the improvement comprising a second blow-pipe opening into the interior chamber of said stove, means cooperating with the first of said blow-pipes for dispensing the synthetic powdery material upon the rotatable support, said first blow-pipe having an axis substantially parallel to the axis of rotation of the rotatable support but eccentric with respect thereto, and second of said two blow-pipes having an axis which is oblique with respect to the axis of the first blow-pipe and is directed toward the rotatable support surface where the melted material forms a deposit on said support at the same place where the first blowpipe is acting whereby the deposited melted material is blown radially outwardly with respect to the axis of rotation of the rotatable support to prevent the said melted material from moving

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)
US33299A 1959-06-05 1960-06-01 Process for manufacturing a tubular body made of synthetic material, and installation for carrying out this process Expired - Lifetime US3185551A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH7408159 1959-06-05

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US3185551A true US3185551A (en) 1965-05-25

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CH (1) CH354429A (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3607111A (en) * 1969-03-18 1971-09-21 Joseph A Adamski Verneuil crystallizer with powder by-pass means
US3650701A (en) * 1970-07-22 1972-03-21 Commissariat Energie Atomique Apparatus for growing crystalline bodies

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1434207A (en) * 1918-09-25 1922-10-31 James R Rose Pipe-welding machine
US1597293A (en) * 1922-01-24 1926-08-24 Ruff Otto Mode of making sintered hollow bodies
US2190360A (en) * 1938-07-11 1940-02-13 John H Howard Apparatus for making toothed cutters and the like
US2471437A (en) * 1945-04-19 1949-05-31 Elgin Nat Watch Co Method and apparatus for producing sapphire hollow articles
US2529971A (en) * 1946-07-31 1950-11-14 Schmidinger Joseph Method and apparatus for the production of bead and wire assemblies
US2697308A (en) * 1951-07-13 1954-12-21 Gen Electric Co Ltd Apparatus for manufacturing synthetic jewels
GB774270A (en) * 1952-12-17 1957-05-08 Western Electric Co Method of producing bodies of metals or matalloids
US2816848A (en) * 1954-02-18 1957-12-17 Jr Glenway Maxon Method of and apparatus for simultaneously flame-cutting and hardening toothed objects
US2851264A (en) * 1955-06-13 1958-09-09 Grove Valve & Regulator Co Metal cutting apparatus
US2852890A (en) * 1955-08-12 1958-09-23 Union Carbide Corp Synthetic unicrystalline bodies and methods for making same

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1434207A (en) * 1918-09-25 1922-10-31 James R Rose Pipe-welding machine
US1597293A (en) * 1922-01-24 1926-08-24 Ruff Otto Mode of making sintered hollow bodies
US2190360A (en) * 1938-07-11 1940-02-13 John H Howard Apparatus for making toothed cutters and the like
US2471437A (en) * 1945-04-19 1949-05-31 Elgin Nat Watch Co Method and apparatus for producing sapphire hollow articles
US2529971A (en) * 1946-07-31 1950-11-14 Schmidinger Joseph Method and apparatus for the production of bead and wire assemblies
US2697308A (en) * 1951-07-13 1954-12-21 Gen Electric Co Ltd Apparatus for manufacturing synthetic jewels
GB774270A (en) * 1952-12-17 1957-05-08 Western Electric Co Method of producing bodies of metals or matalloids
US2816848A (en) * 1954-02-18 1957-12-17 Jr Glenway Maxon Method of and apparatus for simultaneously flame-cutting and hardening toothed objects
US2851264A (en) * 1955-06-13 1958-09-09 Grove Valve & Regulator Co Metal cutting apparatus
US2852890A (en) * 1955-08-12 1958-09-23 Union Carbide Corp Synthetic unicrystalline bodies and methods for making same

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3607111A (en) * 1969-03-18 1971-09-21 Joseph A Adamski Verneuil crystallizer with powder by-pass means
US3650701A (en) * 1970-07-22 1972-03-21 Commissariat Energie Atomique Apparatus for growing crystalline bodies

Also Published As

Publication number Publication date
CH354429A (fr) 1961-05-31

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