CS211840B1 - Alloy for active parts of diamond tools - Google Patents

Abstract

Alloy for active parts of diamond tools. The invention relates to the field of .pyrite metallurgy. The invention addresses the composition of the Alloy, ρτο active part of diamond tools, for example diamond saws, ferrets, drills, discs for cutting, drilling and processing of iziaiváďlýclh and matured concrete filled with, for example, granite, marble, limestone or flint crushed stone. The essence of the invention is an alloy, which contains in mass concentration 15 to 36% copper, 1 to 8% tin, 35 to 60% iron, 11 to 8% aluminum, 1 to 15% nickel, 2 to 25% manganese and 4 to 30% cast tungsten carbide.

Description

The invention relates to an alloy for active parts of diamond tools, for example diamond saws, firéiz, virtacs, disks for cutting, drilling and machining of wilted and matured concretes filled, for example, with granite, marble, limestone or flint.

Due to the coarse-grained structure and the neo-homogenates of concrete, diamond arnia is subjected to considerable dynamic stress. Concrete, especially filled with granite and unripe, is very laibrasive. The alloy properties of the active parts also correspond to these mulch conditions. The alloy must be hard, strong, tough and very abrasion resistant. Furthermore, they are characterized by low thermal expansion, good wettability of the diamond and low insulating temperature. The desired properties are primarily achieved by a suitable choice of the chemical composition of the alloy of the active part of the diamond tool.

Currently, active parts of diamond tools are most often produced on the warp of copper-tin-icobalt (Cu-Sin-Co), copper-tin-iron (Cu-Sn-Fe) ineibo copper-fcobalt-tungsten carbide (Cu-Co- Wc).

Systems containing cobalt (Co) meet most of the desired properties, but cobalt (Col is a non-precursor raw material).

The copper-oin-iron (Cu-Sm-Fe) system, due to its low oitruvadornolsiti, hardness and higher sintering temperatures, does not sufficiently utilize the diamond properties and is characterized by low durability.

The active parts of these diamond tools are manufactured by conventional powder metallurgy techniques, most often by infiltrating the molded skeleton with a swellable component or by pressure isolation.

The disadvantages of the existing alloys are eliminated by the alloy for the active parts of the diamond tools according to the invention, for example diamond saws, milling cutters, drills, saw blades for drilling, drilling and processing of wilted and matured concretes filled e.g. The principle of the invention is that the alloy contains, by weight, a concentration of 15 to 35% copper (Cu), 1 to 8% tin (Snj, 35 to 60% iron (Fe), DL to 8% aluminum). up to 15% nickel (> Ni), 2 to 25% of manganese (Mnj and 4 to 30% of white tungsten carbide (W2C)).

The alloy of the composition of the present invention guarantees a proportional wear of the alloy and diamond during its working process, its good use and the long tool life. Diamond tools work with constant and high productivity. Silitinium | consists of available raw materials and has low sintering temperatures.

The active parts of the diamond alloy tools of the composition according to the invention are produced by other powder metallurgy processes, in particular by sintering below. pressure.

Example 1

Example of alloy composition for active parts of diamond saw for cutting of matured concrete filled with limestone, crushed.

The alloy contains in weight concentration:

% copper (Cu)% tin (Sn)% iron, (Fe)% aluminum (Al)% nickel (Ni), is% manganese (Mn)

- ^. νΐ7 · g ₀ / _θ ica Tungsten (II) tungsten (W2C)

Example 2

An example of the composition of the active ingredient of a diamond milling cutter for grinding terracotta tiles filled with marble crumb.

The alloy contains in weight concentration:

% Cu (copper) '% Sn (tin)% Fe (iron)% Ni (nickel)% A! (aluminum)% W2C (cast, tungsten carbide)% Mn (manganese)

Example 3

An example of an alloy composition for the active part of a diamond Ikoruinka for drilling a mature concrete filled with granite or gneiss grit.

The alloy contains in mass concentration:

% Cu (copper)% Sn (tin)% Fe. (Iron)% Ni (nickel) ’· .1% AI (aluminum)

30 '% W ₂ C (cast tungsten carbide)

17% Mn (manganese)

Claims (1)

An alloy for the active parts of diamond tools, such as Idiamant saws, milling cutters, drills, cakes for cutting, drilling and machining concretes and matured concretes filled, for example, with granite, marble, limestone or flint crumbs, characterized by containing OF THE INVENTION a concentration of 15 to 35% copper (Ou), 1 to 8% tin i (Sn), 35 to 60% iron (Fe), 1 to 8% aluminum (Al), 1 to 16% nickel (Ni), 2 up to 25% manganese (Mn) and 4 to 30% cast tungsten carbide (W2C).