Classifications

• • C—CHEMISTRY; METALLURGY
  • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
  • C22C—ALLOYS
  • C22C1/00—Making non-ferrous alloys
  • C22C1/04—Making non-ferrous alloys by powder metallurgy
  • C22C1/05—Mixtures of metal powder with non-metallic powder
• • C—CHEMISTRY; METALLURGY
  • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
  • C22C—ALLOYS
  • C22C26/00—Alloys containing diamond or cubic or wurtzitic boron nitride, fullerenes or carbon nanotubes

Definitions

• Tools are used for the vibration-free drilling and cutting in natural rock, such as rock formations or in building materials, such as concrete and brick, the cutting of which is filled with hard materials such as carbides, nitrides, carbide-nitride mixed phases, diamond and the like.
• hard materials such as carbides, nitrides, carbide-nitride mixed phases, diamond and the like.
• Materials such as natural, synthetic or polycrystalline diamond, B 4 C, SiC, TiC, BN, TiN, Al 2 0 3 , Zr0 2 , hard metal etc. are often used as hard materials.
• diamond or hard metal are used for concrete and hard stone processing, for softer building materials SiC, Al 2 0 3 etc.
• the abrasive fine particles of these materials are often embedded in a matrix.
• cutting and drilling elements These matrices containing abrasive particles are hereinafter referred to as cutting and drilling elements, regardless of whether they are arranged on supports such as drill shafts, disks and the like or not.
• the cutting and drilling elements can have different shapes depending on the cutting or drilling purpose. For example, the shape of hollow drill bits, of rings, pins, plates, segments and other simple and complex shaped bodies, in the case of cutting discs, for example segment, ring or disc shape, the shape of drilling cutting heads, plates, cylinders and the like.
• the matrix materials like the abrasive particles or parts embedded therein, are subjected to a wear process, the wear depending on the respective processing conditions, namely the hardness of the material to be cut or drilled.
• a large number of different matrix materials would be required. For obvious reasons, this is hardly desirable in practice and is hardly feasible.
• the search for a universally usable matrix material has so far been unsuccessful, especially when considering economic aspects.
• the solution according to the invention consists in the use of copper alloys with 1-6% by weight of Ti, which can be hardened by aging to different hardnesses or strengths, as matrices for the production of shaped bodies loaded with abrasive particles in the matrix as drilling and cutting elements for drilling and cutting purposes.
• the particular advantage of this solution is that by using only one Cu alloy on the manufacturer side, and possibly also on the user side, by means of a heat treatment adapted to the specific application, namely isothermal aging, i.e. aging, matrix materials with abrasive particles and the required hardness are producible. In this way it is possible to manufacture or keep ready cutting drilling elements corresponding to the respective application requirements using a single matrix composition.
• the moldings can be of the type described by way of example at the beginning.
• the duration of the treatment is generally 5 to 120 minutes or more.
• the abrasive particles as previously defined, or mixtures thereof are embedded in a known manner. This can be done, for example, by sintering, hot pressing (pressure sintering) or by another suitable method.
• Diamond is in the foreground as an embedded, abrasive particle. However, other hard materials can also be embedded.
• the invention also relates to abrasive materials, namely matrices containing diamond embedded, that is to say cutting and separating elements of this type, and tools equipped with such cutting and separating elements, the cutting and separating elements being able to be produced by one of the abovementioned use methods.
• the hardened matrix materials can have hardnesses of, for example, 100 HV or in the range of, for example, 350 HV or even more.

Landscapes

• Chemical & Material Sciences (AREA)
• Engineering & Computer Science (AREA)
• Materials Engineering (AREA)
• Mechanical Engineering (AREA)
• Metallurgy (AREA)
• Organic Chemistry (AREA)
• Polishing Bodies And Polishing Tools (AREA)
• Earth Drilling (AREA)

Applications Claiming Priority (2)

Publications (2)

Family

ID=6416619

Family Applications (1)

Country Status (4)

Families Citing this family (5)

Family Cites Families (8)

• 1990
  • 1990-10-19 DE DE4033214A patent/DE4033214A1/de not_active Withdrawn
• 1991
  • 1991-09-27 DE DE59107887T patent/DE59107887D1/de not_active Expired - Fee Related
  • 1991-09-27 EP EP91810761A patent/EP0481917B1/de not_active Expired - Lifetime
  • 1991-09-27 DK DK91810761.6T patent/DK0481917T3/da active
  • 1991-10-15 US US07/776,813 patent/US5186724A/en not_active Expired - Lifetime

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