CS211124B1 - Alloy for active parts of diamond tools - Google Patents

Abstract

Alloy for active parts of diamond tools. The invention relates to the field of powder metallurgy. The invention solves an alloy for active parts of diamond tools for processing marbles and syenite. The essence of the invention is an alloy that contains in mass concentration 25 to 70% copper, 2 to 15% tin, 1 to 60% iron, 1 to 10% aluminum, 1 to 15% nickel and 2 to 18% manganese.

Description

The invention relates to an alloy for the active parts of diamond tools, for example diamond saws, milling cutters, drills, blades for cutting, drilling and machining low to medium abrasive, soft medium hard stones with a fine crystalline structure with a medium quartz content such as marble and syenite.

The alloy of the active part of the diamond tool must have specific mechanical-physical properties in order to be proportional to the wear of the alloy of the active part and the diamond, and thus to its properties. The active part alloy for working said materials must be characterized by sufficient hardness, strength, toughness and abrasion resistance. Furthermore, low thermal expansion of the alloy, good wettability of the diamond and low sintering temperatures are required. The desired properties are primarily achieved by a suitable choice of the chemical composition of the alloy of the active part dia. tool.

At present, the active parts of diamond tools for processing said materials are made of alloys on the warp Cu-Sn-Co and Cu-Sn-Fe. The Cu-Sn-Co system meets most of the required alloy properties, but Co is a very unavailable raw material. The Cu-Sn-Fe system is low abrasion resistant, has low hardness values and high sintering temperatures, which deteriorates diamond utilization and the life of diamond tools.

Disadvantages of existing alloys are eliminated by the alloy for the active parts of the diamond tools of the invention for marble and syenite treatment. The principle of the invention is that the alloy consists in a concentration by weight of 25 to 70% copper (Cu), 2 to 15% tin (Sn), 10 to 60% iron (Fe), 1 to 10% aluminum (Al), 1 to 10% 15% nickel (Ni) and 2-18% manganese (Mn).

The alloy of the composition of the present invention guarantees proportional wear of the alloy and diamond during the working process, its good use and high tool life. Diamond tools work with constant and high productivity.

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

He did

An example of an alloy composition for the active parts of a diamond circular saw for cutting fine crystalline marbles such as Pomezi, Cuban Marbles, Spis Travertine and the like.

The alloy contains in weight concentration:

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

Example 2

Example of alloy composition for active parts of diamond circular saw for cutting of syenite.

The alloy contains in weight concentration:

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

Example 3

Example of alloy composition for active parts of diamond milling cutter for grinding fine crystalline marbles, for example Pomezí, Cuban marbles, Spiš travertine and the like.

The alloy contains in weight concentration:

% copper (Cu)% tin (Sn)% iron (Pe)% nickel (Ni)% aluminum (Al)% manganese (Mn)

Claims (1)

SUBJECT OF THE INVENTION Alloy for active parts of diamond tools for marble and syenite treatment, characterized in that it contains in a concentration of 25 to 70% copper (Cu), 2 to 15% tin (Sn), 1 to 60% iron (Pe), 1 to 10 % aluminum (Al), 1-15% nickel (Ni), 2-18% manganese (Mn).