NL300785A - - Google Patents

Info

Publication number
NL300785A
NL300785A NL300785DA NL300785A NL 300785 A NL300785 A NL 300785A NL 300785D A NL300785D A NL 300785DA NL 300785 A NL300785 A NL 300785A
Authority
NL
Netherlands
Prior art keywords
inch
iridium
diameter
molybdenum
tungsten
Prior art date
Application number
Priority date (The priority date 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 date listed.)
Publication of NL300785A publication Critical patent/NL300785A/xx

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J19/00—Details of vacuum tubes of the types covered by group H01J21/00
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C37/00—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
    • B21C37/04—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of bars or wire
    • B21C37/042—Manufacture of coated wire or bars
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F7/00—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression
    • B22F7/06—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression of composite workpieces or articles from parts, e.g. to form tipped tools
    • 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
    • B23K20/00—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating
    • B23K20/22—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating taking account of the properties of the materials to be welded
    • B23K20/233—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating taking account of the properties of the materials to be welded without ferrous layer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B15/00—Layered products comprising a layer of metal
    • B32B15/01—Layered products comprising a layer of metal all layers being exclusively metallic
    • B32B15/018—Layered products comprising a layer of metal all layers being exclusively metallic one layer being formed of a noble metal or a noble metal alloy
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B1/00—Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors
    • H01B1/02—Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors mainly consisting of metals or alloys
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J19/00—Details of vacuum tubes of the types covered by group H01J21/00
    • H01J19/28—Non-electron-emitting electrodes; Screens
    • H01J19/30—Non-electron-emitting electrodes; Screens characterised by the material
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J2893/00—Discharge tubes and lamps
    • H01J2893/0001—Electrodes and electrode systems suitable for discharge tubes or lamps
    • H01J2893/0012—Constructional arrangements
    • H01J2893/0019—Chemical composition and manufacture
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J2893/00—Discharge tubes and lamps
    • H01J2893/0001—Electrodes and electrode systems suitable for discharge tubes or lamps
    • H01J2893/0012—Constructional arrangements
    • H01J2893/0019—Chemical composition and manufacture
    • H01J2893/002—Chemical composition and manufacture chemical
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J2893/00—Discharge tubes and lamps
    • H01J2893/0001—Electrodes and electrode systems suitable for discharge tubes or lamps
    • H01J2893/0012—Constructional arrangements
    • H01J2893/0019—Chemical composition and manufacture
    • H01J2893/0022—Manufacture
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J2893/00—Discharge tubes and lamps
    • H01J2893/0001—Electrodes and electrode systems suitable for discharge tubes or lamps
    • H01J2893/0012—Constructional arrangements
    • H01J2893/0019—Chemical composition and manufacture
    • H01J2893/0022—Manufacture
    • H01J2893/0023—Manufacture carbonising and other surface treatments
    • 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
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/12—All metal or with adjacent metals
    • Y10T428/12014—All metal or with adjacent metals having metal particles
    • Y10T428/12028—Composite; i.e., plural, adjacent, spatially distinct metal components [e.g., layers, etc.]
    • Y10T428/12063—Nonparticulate metal component
    • 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
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/12—All metal or with adjacent metals
    • Y10T428/12493—Composite; i.e., plural, adjacent, spatially distinct metal components [e.g., layers, joint, etc.]
    • Y10T428/12771—Transition metal-base component
    • Y10T428/12806—Refractory [Group IVB, VB, or VIB] metal-base component
    • Y10T428/12826—Group VIB metal-base component
    • Y10T428/12833—Alternative to or next to each other
    • 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
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/12—All metal or with adjacent metals
    • Y10T428/12493—Composite; i.e., plural, adjacent, spatially distinct metal components [e.g., layers, joint, etc.]
    • Y10T428/12771—Transition metal-base component
    • Y10T428/12861—Group VIII or IB metal-base component
    • Y10T428/12875—Platinum group metal-base component

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Composite Materials (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Metal Extraction Processes (AREA)

Abstract

A method of producing iridium coated tungsten or molybdenum wire, e.g. for use in grids of electron discharge tubes, comprises inserting into a tube of sintered iridium powder having a V.P.N. of from 220-310 a core of tungsten or molybdenum having a V.P.N. of 480/540 or 330/400 respectively and swaging the filled tube to rod and drawing the rod to wire. In a first example iridium powder having a surface area of 0.3 m.2/gm. is compacted about a 0.25 inch diameter polished mild steel former under hydrostatic pressure of 15 tons/inch2. The former is flange at one end and the powder is supported by a latex sheath. The compact 4 inches long and having 0.25 inch and 0.375 inch inside and outside diameters respectively is sintered in vacuum at 1500 DEG C. to give a density of 18 gms./cm.3. A sintered tungsten rod of a density of 15-16 gms./cm.3 is ground to produce a sliding fit and inserted into the compact, the assembly being subsequently swaged at 1500 DEG C. to 0.125 inch diameter rod, hot drawn at 750-650 DEG C. to 0.10 inch diameter wire, drawn at 600 DEG C. to 0.02 inch diameter and finally at 550-500 DEG C. to 0.01 inch diameter wire. The drawing rate initially is from 1-2 ft./min. to about 12 ft./min. at a diameter of 0.02 inch. The thickness of the iridium sheath is usually 0.001-0.002 inch but may be 0.0005 inch and the hardness of the iridium and tungsten 582 V.P.N. and 803 V.P.N. respectively. Plugs of iridium may be used to plug the tube if the heating is carried out under oxidizing conditions. In a second example a rod of swaged and drawn molybdenum containing 0.5% titanium and having a hardness of 375 V.P.N. is inserted in the tube, the ends plugged with iridium and the assembly hot-swaged and hot-drawn to a final diameter of 0.012 inch and a core diameter of 0.005 inch. The iridium and molybdenum hardness values were 698 V.P.N. and 386 V.P.N. respectively. The tensile strengths of the tube and core are preferably between 5000/12,000 p.s.i. and the density of the iridium, tungsten and molybdenum 16 to 20; 14 to 17 and 10.2 gms./cm.3 respectively. It is stated that no fusing bond exists between the metal core and the iridium sheath which can be easily peeled therefrom.
NL300785D 1962-11-26 NL300785A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB44639/62A GB983023A (en) 1962-11-26 1962-11-26 Production of composite metal wire

Publications (1)

Publication Number Publication Date
NL300785A true NL300785A (en)

Family

ID=10434169

Family Applications (1)

Application Number Title Priority Date Filing Date
NL300785D NL300785A (en) 1962-11-26

Country Status (5)

Country Link
US (1) US3271849A (en)
CH (1) CH411532A (en)
DE (1) DE1195871B (en)
GB (1) GB983023A (en)
NL (1) NL300785A (en)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3387403A (en) * 1965-12-09 1968-06-11 Cuba Specialty Mfg Co Inc Tubular coupling
US3753704A (en) * 1967-04-14 1973-08-21 Int Nickel Co Production of clad metal articles
US3635760A (en) * 1968-11-18 1972-01-18 Thermo Electron Corp Formation of planes facilitating thermionic emission
US3724102A (en) * 1972-05-24 1973-04-03 Patten C Van Language teaching device
DE2414641A1 (en) * 1974-03-26 1975-10-16 Kernforschung Gmbh Ges Fuer CORROSION RESISTANT TURBINE BLADES AND METHOD OF MANUFACTURING THEREOF
US4110893A (en) * 1977-05-24 1978-09-05 United Technologies Corporation Fabrication of co-cr-al-y feed stock
FR2553565B1 (en) * 1983-10-18 1987-04-10 Comp Generale Electricite PROCESS FOR THE PREPARATION OF MULTIFILAMENTARY SUPERCONDUCTING STRANDS FROM MOLYBDENE TERNARY CHALCOGENIDE
NL8403188A (en) * 1984-10-18 1986-05-16 Schelde Nv COATED REINFORCEMENT WIRE.
DE4009366A1 (en) * 1990-03-23 1991-09-26 Heraeus Gmbh W C METHOD FOR PRODUCING A METAL COMPOSITE WIRE

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE598766C (en) * 1931-11-18 1934-06-16 I G Farbenindustrie Akt Ges Process for the production of composite metals
US2334609A (en) * 1940-11-20 1943-11-16 Nat Lead Co Core solder
US2373405A (en) * 1941-02-14 1945-04-10 Callite Tungsten Corp Process of making seamless hollow bodies of refractory metals
US2628516A (en) * 1949-07-09 1953-02-17 Westinghouse Electric Corp Tube making process
US2750658A (en) * 1950-10-03 1956-06-19 Hartford Nat Bank & Trust Co Wire-shaped object
CH301059A (en) * 1951-11-13 1954-08-31 Intercito Holding Process for the production of metal wires from metal powders.
DE958073C (en) * 1953-02-10 1957-02-14 Dr Hermann Franssen Method and device for plating round profiles by pressing on powder and sintering

Also Published As

Publication number Publication date
CH411532A (en) 1966-04-15
US3271849A (en) 1966-09-13
GB983023A (en) 1965-02-10
DE1195871B (en) 1965-07-01

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