GB455910A - Improvements in and relating to metal cutting tool bits - Google Patents

Improvements in and relating to metal cutting tool bits

Info

Publication number
GB455910A
GB455910A GB20063/36A GB2006336A GB455910A GB 455910 A GB455910 A GB 455910A GB 20063/36 A GB20063/36 A GB 20063/36A GB 2006336 A GB2006336 A GB 2006336A GB 455910 A GB455910 A GB 455910A
Authority
GB
United Kingdom
Prior art keywords
carbide
binder
layer
layers
tungsten
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
GB20063/36A
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.)
British Thomson Houston Co Ltd
Original Assignee
British Thomson Houston Co 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 British Thomson Houston Co Ltd filed Critical British Thomson Houston Co Ltd
Publication of GB455910A publication Critical patent/GB455910A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B27/00—Tools for turning or boring machines; Tools of a similar kind in general; Accessories therefor
    • B23B27/14—Cutting tools of which the bits or tips or cutting inserts are of special material
    • B23B27/18—Cutting tools of which the bits or tips or cutting inserts are of special material with cutting bits or tips or cutting inserts rigidly mounted, e.g. by brazing
    • 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
    • B23K31/00—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups
    • B23K31/02—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups relating to soldering or welding
    • B23K31/025—Connecting cutting edges or the like to tools; Attaching reinforcements to workpieces, e.g. wear-resisting zones to tableware
    • 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
    • B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
    • B23K35/001—Interlayers, transition pieces for metallurgical bonding of workpieces
    • B23K35/004—Interlayers, transition pieces for metallurgical bonding of workpieces at least one of the workpieces being of a metal of the iron group

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Powder Metallurgy (AREA)

Abstract

455,910. Tools. BRITISH THOMSONHOUSTON CO., Ltd., Crown House, Aldwych, London. July 20, 1936, No. 20063. Convention date, July 24, 1935. [Classes 83 (ii) and 83 (iii)] A metal-cutting tool bit consists of upper or cutting layer 1 of tantalum carbide with a binder such as cobalt, a foundation layer 3 of tungsten carbide and a binder, and one or more intermediate layers 2 of a binder with tungsten and tantalum carbides in any proportion. The tantalum carbide may be wholly or in part replaced by carbide of another metal of the fifth group, and the tungsten carbide replaced by carbide of another metal of the sixth group such as molybdenum. The tip may be copper brazed to a shank 4. Each layer may contain 3-20 per cent of cobalt as a binder. The foundation layer of powdered material may be placed in a steel mould and covered by the intermediate and top layers also in powdered form. Pressure is applied and the material then sintered in a hydrogen furnace. Alternatively the successive layers of powdered material may be placed in a carbon mould and simultaneously pressed and sintered. If more than one intermediate layer is used, the layers nearer the foundation layer have the greater proportion of tungsten carbide.
GB20063/36A 1935-07-24 1936-07-20 Improvements in and relating to metal cutting tool bits Expired GB455910A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US455910XA 1935-07-24 1935-07-24

Publications (1)

Publication Number Publication Date
GB455910A true GB455910A (en) 1936-10-29

Family

ID=21938806

Family Applications (1)

Application Number Title Priority Date Filing Date
GB20063/36A Expired GB455910A (en) 1935-07-24 1936-07-20 Improvements in and relating to metal cutting tool bits

Country Status (1)

Country Link
GB (1) GB455910A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1208656B (en) * 1962-09-18 1966-01-05 Kohlswa Jernverks Ab Projectile for armor-piercing weapons and method for making such a projectile
JPS4898470A (en) * 1972-02-28 1973-12-14
ES2226521A1 (en) * 2002-03-26 2005-03-16 HARD & WEAR TECHNOLOGIES, S.A. Recycled coating material for coating wear areas in blades and rakes heads of tunnel boring machine, has plate pieces connected to mosaic unit by welding part that is mounted on support

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1208656B (en) * 1962-09-18 1966-01-05 Kohlswa Jernverks Ab Projectile for armor-piercing weapons and method for making such a projectile
JPS4898470A (en) * 1972-02-28 1973-12-14
JPS5141707B2 (en) * 1972-02-28 1976-11-11
ES2226521A1 (en) * 2002-03-26 2005-03-16 HARD & WEAR TECHNOLOGIES, S.A. Recycled coating material for coating wear areas in blades and rakes heads of tunnel boring machine, has plate pieces connected to mosaic unit by welding part that is mounted on support

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