GB587827A - Improvements in or relating to nozzles and other seamless tubular bodies having abrasion and/or heat resisting inner surfaces - Google Patents

Improvements in or relating to nozzles and other seamless tubular bodies having abrasion and/or heat resisting inner surfaces

Info

Publication number
GB587827A
GB587827A GB153545A GB153545A GB587827A GB 587827 A GB587827 A GB 587827A GB 153545 A GB153545 A GB 153545A GB 153545 A GB153545 A GB 153545A GB 587827 A GB587827 A GB 587827A
Authority
GB
United Kingdom
Prior art keywords
core
refractory
nozzles
refractory metal
coating
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.)
Expired
Application number
GB153545A
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.)
LOTHAR WACHTEL
MODERN HARDMETALS Ltd
Original Assignee
LOTHAR WACHTEL
MODERN HARDMETALS Ltd
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.)
Filing date
Publication date
Application filed by LOTHAR WACHTEL, MODERN HARDMETALS Ltd filed Critical LOTHAR WACHTEL
Priority to GB153545A priority Critical patent/GB587827A/en
Publication of GB587827A publication Critical patent/GB587827A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • B22F5/00—Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product
    • B22F5/10—Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product of articles with cavities or holes, not otherwise provided for in the preceding subgroups
    • B22F5/106—Tube or ring forms
    • 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
    • B22F5/00—Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product
    • B22F5/10—Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product of articles with cavities or holes, not otherwise provided for in the preceding subgroups
    • C—CHEMISTRY; METALLURGY
    • C23—COATING 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
    • C23C—COATING 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
    • C23C4/00—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge
    • C23C4/18—After-treatment
    • C23C4/185—Separation of the coating from the substrate
    • 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
    • B22F2998/00—Supplementary information concerning processes or compositions relating to powder metallurgy

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Physics & Mathematics (AREA)
  • Plasma & Fusion (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Coating By Spraying Or Casting (AREA)

Abstract

587,827. Making nozzles and tubes. WACHTEL, L., and MODERN HARDMETALS, Ltd. Jan. 18, 1945, No. 1535. [Class 83 (ii)] A method of manufacturing nozzles and other seamless tubular bodies having abrasion and/or heat-resistant inner surfaces consists in coating a relatively soft core with refractory metal and subsequently removing the core by machining and, if necessary, by sandblasting, leaving a shell of the refractory metal. The refractory metal consists of a carbide of tungsten, molybdenum, titanium, tantalum, silicon, boron, vanadium or chromium or a mixture of such carbides with each other or with one of the metals of the group, iron, cobalt, nickel and manganese. The core comprises a rod or tube of easily machinable material such as iron or mild steel. A coating of the refractory metal may be applied to the core by means of welding rods of the refractory material, by spraying, followed by heating or by dipping the core into a pasty mixture of refractory powder and a binder followed by heat treatment. The core is then drilled and if necessary sandblasted. Making cased forms.-An outer covering of a machinable metal such as mild steel may be applied to the refractory coating by electric, oxy-acetylene or atomic hydrogen welding. Specification 563,796 is referred to.
GB153545A 1945-01-18 1945-01-18 Improvements in or relating to nozzles and other seamless tubular bodies having abrasion and/or heat resisting inner surfaces Expired GB587827A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB153545A GB587827A (en) 1945-01-18 1945-01-18 Improvements in or relating to nozzles and other seamless tubular bodies having abrasion and/or heat resisting inner surfaces

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB153545A GB587827A (en) 1945-01-18 1945-01-18 Improvements in or relating to nozzles and other seamless tubular bodies having abrasion and/or heat resisting inner surfaces

Publications (1)

Publication Number Publication Date
GB587827A true GB587827A (en) 1947-05-07

Family

ID=9723667

Family Applications (1)

Application Number Title Priority Date Filing Date
GB153545A Expired GB587827A (en) 1945-01-18 1945-01-18 Improvements in or relating to nozzles and other seamless tubular bodies having abrasion and/or heat resisting inner surfaces

Country Status (1)

Country Link
GB (1) GB587827A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3803702A (en) * 1972-06-27 1974-04-16 Crucible Inc Method of fabricating a composite steel article

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3803702A (en) * 1972-06-27 1974-04-16 Crucible Inc Method of fabricating a composite steel article

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