US3316074A - Metallic elements adapted to come in contact with melted glass - Google Patents

Metallic elements adapted to come in contact with melted glass Download PDF

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Publication number
US3316074A
US3316074A US319050A US31905063A US3316074A US 3316074 A US3316074 A US 3316074A US 319050 A US319050 A US 319050A US 31905063 A US31905063 A US 31905063A US 3316074 A US3316074 A US 3316074A
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Prior art keywords
ranging
approximately
orifices
alloy
melted glass
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Expired - Lifetime
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US319050A
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English (en)
Inventor
Laurent Bernard
Fezenko Igor
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Compagnie de Saint Gobain SA
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Compagnie de Saint Gobain SA
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    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B37/00—Manufacture or treatment of flakes, fibres, or filaments from softened glass, minerals, or slags
    • C03B37/01—Manufacture of glass fibres or filaments
    • C03B37/04—Manufacture of glass fibres or filaments by using centrifugal force, e.g. spinning through radial orifices; Construction of the spinner cups therefor
    • C03B37/047—Selection of materials for the spinner cups
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C19/00—Alloys based on nickel or cobalt
    • C22C19/03—Alloys based on nickel or cobalt based on nickel
    • C22C19/05—Alloys based on nickel or cobalt based on nickel with chromium
    • C22C19/051—Alloys based on nickel or cobalt based on nickel with chromium and Mo or W
    • C22C19/053—Alloys based on nickel or cobalt based on nickel with chromium and Mo or W with the maximum Cr content being at least 30% but less than 40%

Definitions

  • the alloys according to the invention contain the following principal constituents: chromium, nickel, niobium (part of which may be rep-laced by tantalum), tungsten, carbon and iron, the proportions of these different constituents being within the following limits:
  • Chromium 25% to 33%, and preferably 28% to 32% Nickel: 45% to 53%, and preferably 48% to 53%
  • Niobium 3.5% to 6%, and preferably 3.5% to 5%
  • Tantalum present in the niobium in an amount up to 0.5%
  • Tungsten 1% to 5%, and preferably 3% to 5%
  • Carbon 0.3% to .6%, and preferably 0.4% to 0.5%
  • Iron the remainder
  • These alloys may also include manganese in an amount up to 2%, and preferably 0.5% to 1.5%, silicon up to 0.5%, and boron from 0.1% to 0.4%.
  • the alloys according to the invention have a low coefficient of expansion which varies relatively little with the temperature. Thus it is that an alloy according to the above example has an expansion coeificient which varies from 13.00 at ordinary temperature to 17.25 10 at 1100 C.
  • the alloys also have particularly interesting properties from the point of view of flow and corrosion resistance.
  • the alloy of the above example subjected to flow tests corresponding to a load of 2 kg./mm. at a temperature of 1050" C. does not give rise to breakage until after a very long time, about 640 hours; while the alloys customarily used have periods before breakdowns of about 200 hours under the same conditions.
  • FIGS. 1 and 3 are graphs indicating comparative results of flow and corrosion resistance, respectively, attainable by the use of alloys in accordance with the present invention, and conventional alloys as known in the prior art;
  • FIG. 2 is a vertical sectional View of a rotary centrifuge assembly for handling molten glass which is adapted to be fabricated from alloys in accordance with the invention, which are characterized by a high degree of resistance to the corrosive effects of molten glass.
  • curve A which consists of:
  • curve B portrays the behavior of an alloy according to the invention having the composition of the above specific example.
  • the abscissas, indicating the time in hours, are in logarithmic scale, and
  • the invention also provides for the application of the above alloys to the production of metallic pieces or organs designed to be in contact with melted glass, for example, receivers or vessels, condensers, electrodes, etc. It is particularly concerned with the obtention in metallic organs which have orifices, in general of small diameter, through which the melted glass flows at high temperature, these pieces or organs themselves being brought to a high temperature.
  • the invention has for its aim the use of these alloys especially for the attainment of hollow rotating bodies which are employed in the production of glass fibers, and which have a peripheral band or wall provided with a plurality of orifices through which the melted glass is projected in the form of filaments which are then drawn out into fibers.
  • Such hollow bodies operate under particularly diflicult and demanding conditions, in view of the very high temperatures to which they are raised, and especially by reason of the high temperature of the gases in contact with the outside of the peripheral band.
  • FIG. 2 of the attached drawings there is shown in axial cross section such a rotating body 1 whose peripheral band 2 is pierced by a great number of orifices 3.
  • the melted glass 4 is supplied to a distributing organ 5, in the shape of a basket, the vertical wall of which is also provided with orifices 6.
  • Basket 5 is carried along in rotation by the rotating body 1 and the melted glass is projected through orifices 6 onto the internal face of peripheral wall 2, the glass being thus distributed substantially uniformly on that wall. Under the effect of centrifugal force, the melted glass is projected through orifices 3 in the form of filaments which are then drawn out into fine fibers.
  • combustion chamber 7 of general annular shape, allowing combustion gases at high speed and high temperature to be directed, through an expansion orifice 8 arranged coaxially with the rotating body, into contact with the threads of material projected through orifices 3 and. to cause them to be drawn out into fine fibers.
  • the alloys according to the invention permit the useful life of these devices to be decreased to a substantial degree, that is, both the hollow centrifuge bodies as well as the distributor members therein, by reason of their high resistance to corrosion.
  • the curves of FIG. 3 portray the losses in weight in percent of centrifuge bodies of identical shape and dimensions formed of different alloys, corresponding to different periods of operation in hours.
  • Curve C illustrates the functional behavior of a centrifuge body formed of a conventional alloy of the following composition:
  • Curve D illustrates the functional behavior of a centrifuge body formed of another well known alloy, and particularly one of the formulation set forth above for the conduct of the flow test represented by the specimen producing the curve A in FIG. 1.
  • Curve E illustrates the functional behavior of a centrifuge body when the same is formed of the specific alloy in accordance with the invention as set forth above in the first specific formula, and which produced the curve B in FIG. 1.
  • alloys according to the invention have a certain hardness, this hardness is not, however, such that they cannot be machined under normal conditions of standard refractory steels. It is also to be noted that, with alloys according to the invention, it is possible to manufacture distributor elements or baskets which are not welded and are manufactured by centrifugation while in a molten state.
  • a hollow rotatable metallic body having a peripheral wall with a plurality of orifices of small diameter through which are projected by centrifugal force thin filaments of molten glass, said body being composed of a metallic alloy having good mechanical resistance and high corrosion resistance and consisting essentially of the following ingredients in the respective proportions by weight: chromium ranging from above 25% to 33%; nickel ranging from approximately 45% to 53%; a combined niobium and tantalum content ranging from approximately 3.5% to 6% with the tantalum content in minor amount ranging up to 0.5%; tungsten from approximately 1% to 5 carbon ranging from approximately 0.3% to less than 0.5 with the remainder iron.
  • a hollow rotatable metallic body having a peripheral wall with a plurality of orifices of small diameter through which are projected by centrifugal force thin filaments of molten glass, said body being composed of a metallic alloy having good mechanical resistance and high corrosion resistance and consisting essentially of the following ingredients in the respective proportions by weight; chromium ranging from above 25% to 33%; nickel ranging from approximately 45 to 53%; a combined niobium and tantalum content ranging from approximately 3.5 to 6% with the tantalum content in minor amount ranging up to 0.5%; tungsten from approximately 1% to 5%; carbon ranging from approximately 0.3% to less than 0.5%; up to 2% of manganese; up to 0.5% of silicon; :boron ranging from 0.1% to 0.4%; and the remainder consisting essentially of iron.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Organic Chemistry (AREA)
  • Materials Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Metallurgy (AREA)
  • Mechanical Engineering (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Manufacturing & Machinery (AREA)
  • Manufacture, Treatment Of Glass Fibers (AREA)
  • Manufacture And Refinement Of Metals (AREA)
  • Braking Arrangements (AREA)
US319050A 1962-11-06 1963-10-25 Metallic elements adapted to come in contact with melted glass Expired - Lifetime US3316074A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR914567A FR1427614A (fr) 1962-11-06 1962-11-06 Alliages réfractaires

Publications (1)

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US3316074A true US3316074A (en) 1967-04-25

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US319050A Expired - Lifetime US3316074A (en) 1962-11-06 1963-10-25 Metallic elements adapted to come in contact with melted glass

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US (1) US3316074A (xx)
BE (1) BE639575A (xx)
CH (1) CH427305A (xx)
DE (1) DE1290722B (xx)
ES (1) ES293253A1 (xx)
FI (1) FI42146B (xx)
FR (1) FR1427614A (xx)
GB (1) GB1015048A (xx)
NL (1) NL141246B (xx)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3384478A (en) * 1966-01-17 1968-05-21 Miles S. Firnhaber Nickel-chromium alloys
US3393986A (en) * 1965-05-28 1968-07-23 Miles S. Firnhaber Apparatus for manufacturing mineral fibers
US3443922A (en) * 1966-03-08 1969-05-13 Ppg Industries Inc Float glass take-out roll
US4367083A (en) * 1981-11-06 1983-01-04 Owens-Corning Fiberglas Corporation Nickel-base spinner alloy
US5964915A (en) * 1998-06-02 1999-10-12 Deloro Stellite Company Inc. Mold for forming glassware

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0030421B1 (en) * 1979-11-23 1984-05-23 Bernard Gleeson Glass spinning vessel
JPS5947021B2 (ja) * 1981-12-08 1984-11-16 新報国製鉄株式会社 高温耐蝕耐摩耗合金
GB2616473A (en) * 2022-03-11 2023-09-13 Knauf Insulation Srl Mineral wool spinners

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2540107A (en) * 1946-09-04 1951-02-06 Blaw Knox Co High-temperature alloys
US2587275A (en) * 1949-09-23 1952-02-26 Driver Harris Co Furnace element
US2607170A (en) * 1950-06-15 1952-08-19 Owens Corning Fiberglass Corp Apparatus for contacting molten glass
CA547402A (en) * 1957-10-08 T. Harris Geoffrey Nickel-chromium base alloys
US3031717A (en) * 1957-03-08 1962-05-01 Saint Gobain Centrifugal fiber forming apparatus

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2920956A (en) * 1956-10-08 1960-01-12 Universal Cyclops Steel Corp Method of preparing high temperature alloys
US3010201A (en) * 1958-12-29 1961-11-28 Owens Corning Fiberglass Corp Process for fabricating a centrifuge for handling molten glass
FR1274925A (fr) * 1960-06-24 1961-11-03 Saint Gobain Perfectionnement aux pièces et organes métalliques destinés à être mis en pntact avec du verre fondu

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA547402A (en) * 1957-10-08 T. Harris Geoffrey Nickel-chromium base alloys
US2540107A (en) * 1946-09-04 1951-02-06 Blaw Knox Co High-temperature alloys
US2587275A (en) * 1949-09-23 1952-02-26 Driver Harris Co Furnace element
US2607170A (en) * 1950-06-15 1952-08-19 Owens Corning Fiberglass Corp Apparatus for contacting molten glass
US3031717A (en) * 1957-03-08 1962-05-01 Saint Gobain Centrifugal fiber forming apparatus

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3393986A (en) * 1965-05-28 1968-07-23 Miles S. Firnhaber Apparatus for manufacturing mineral fibers
US3384478A (en) * 1966-01-17 1968-05-21 Miles S. Firnhaber Nickel-chromium alloys
US3443922A (en) * 1966-03-08 1969-05-13 Ppg Industries Inc Float glass take-out roll
US4367083A (en) * 1981-11-06 1983-01-04 Owens-Corning Fiberglas Corporation Nickel-base spinner alloy
US5964915A (en) * 1998-06-02 1999-10-12 Deloro Stellite Company Inc. Mold for forming glassware

Also Published As

Publication number Publication date
NL141246B (nl) 1974-02-15
CH427305A (fr) 1966-12-31
GB1015048A (en) 1965-12-31
BE639575A (xx)
FI42146B (xx) 1970-02-02
ES293253A1 (es) 1963-11-01
FR1427614A (fr) 1966-02-11
DE1290722B (de) 1969-03-13

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