GB354641A - Improvements in the manufacture of metal cutting and working and like tools - Google Patents

Improvements in the manufacture of metal cutting and working and like tools

Info

Publication number
GB354641A
GB354641A GB33397/30A GB3339730A GB354641A GB 354641 A GB354641 A GB 354641A GB 33397/30 A GB33397/30 A GB 33397/30A GB 3339730 A GB3339730 A GB 3339730A GB 354641 A GB354641 A GB 354641A
Authority
GB
United Kingdom
Prior art keywords
carbide
tools
layer
manufacture
working
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
GB33397/30A
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.)
Krupp Stahl AG
Fried Krupp AG
Original Assignee
Krupp Stahl AG
Fried Krupp AG
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 Krupp Stahl AG, Fried Krupp AG filed Critical Krupp Stahl AG
Publication of GB354641A publication Critical patent/GB354641A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • B23K35/22—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by the composition or nature of the material
    • B23K35/24—Selection of soldering or welding materials proper
    • B23K35/32—Selection of soldering or welding materials proper with the principal constituent melting at more than 1550 degrees C
    • B23K35/327—Selection of soldering or welding materials proper with the principal constituent melting at more than 1550 degrees C comprising refractory compounds, e.g. carbides
    • 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

Landscapes

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

Abstract

In the manufacture of metal working and like tools, a layer of powdered tungsten carbide or other high melting point carbide is melted on to a foundation metal. The foundation metal may be heated to red heat and a mixture of tungsten carbide and a flux such as calcium fluoride applied to the surface in a layer of about 3mm. A flame such as the metallic hydrogen flame having a temperature of not less than 3000 DEG C. is employed to melt the surface of the foundation metal and to melt the carbide, a homogeneous layer thereby being formed. The carbides may be nitrogenized before the operation, preferably by the action of ammonia at a temperature of 500 DEG C. for about 100 hours, and are preferably previously sintered and again disintegrated. In a modification of the process, pieces of sintered carbide may be placed at intervals on the surface, and the spaces therebetween filled with molten carbide.
GB33397/30A 1929-11-21 1930-11-06 Improvements in the manufacture of metal cutting and working and like tools Expired GB354641A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE354641X 1929-11-21

Publications (1)

Publication Number Publication Date
GB354641A true GB354641A (en) 1931-08-13

Family

ID=6289723

Family Applications (1)

Application Number Title Priority Date Filing Date
GB33397/30A Expired GB354641A (en) 1929-11-21 1930-11-06 Improvements in the manufacture of metal cutting and working and like tools

Country Status (1)

Country Link
GB (1) GB354641A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL2002451C2 (en) * 2009-01-26 2010-07-27 Mammoet Holding B V Chain saw.
US8778259B2 (en) 2011-05-25 2014-07-15 Gerhard B. Beckmann Self-renewing cutting surface, tool and method for making same using powder metallurgy and densification techniques

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL2002451C2 (en) * 2009-01-26 2010-07-27 Mammoet Holding B V Chain saw.
US8778259B2 (en) 2011-05-25 2014-07-15 Gerhard B. Beckmann Self-renewing cutting surface, tool and method for making same using powder metallurgy and densification techniques

Similar Documents

Publication Publication Date Title
US1733241A (en) of houston
US2430601A (en) Method for treating argillaceous material
US1791968A (en) Welding method
GB354641A (en) Improvements in the manufacture of metal cutting and working and like tools
US1551333A (en) Tool and die
US2137144A (en) Process for the production of metal carbides
US336568A (en) Thaddeus a
US1472851A (en) Method of cementation of boron into the surface of iron or steel
US1512191A (en) Hard tool and implement and in process of making
US1876175A (en) Method of making metal carbides
US2424825A (en) Method of repairing open hearth furnace banks
US2224448A (en) Wear resisting alloy
US1812357A (en) Process of manufacturing tungsten carbide
US1477135A (en) Metal bloom and method of making same
US2230804A (en) Base metal alloy
SU123029A1 (en) The method of reinforcement of parts operating under conditions of abrasive wear, granules of hard or superhard carbides
US2205888A (en) Base metal alloy
US1703662A (en) Refractory material
US1794229A (en) Method of making hard metal compositions
US1563853A (en) Refractory material and method of producing the same
US2136107A (en) Method for producing carbides
US1943738A (en) Process and composition for hardening copper
GB262644A (en) Improved method of making bi-metallic strips for thermostats
GB376299A (en) Method of making hard alloys for cutting tools
GB499767A (en) Improvements in dense non-metallic articles