RU2325255C2 - Method of manufacture of steel products having properties of damascus steel - Google Patents

Abstract

FIELD: metallurgy.

SUBSTANCE: billet is obtained, which includes a core of mild or elastic steel with a layer of flux, steel, and graphite powder mixture applied on it. Alloying elements may be added into the mixture. The obtained billet is placed in an airtight heat-resistant mould and heated until the mixture melts and is welded with the core. The billet is cooled slowly in the mould to a temperature, at which the carbon-containing layer welded with the core reaches a yield required for further machining. The process can be made completely automated. The dimensions and weight of products manufactured using this method can vary significantly.

EFFECT: decreased power consumption.

3 cl

Description

A known method of manufacturing damask, which consists in carburizing the upper layer with subsequent mechanical and thermal effects on it, to obtain crushed grain in the surface layer. That is, a complex process is known on the verge of intuition (see “Weapons from Damascus and Bulat.” V.Khorev. Rostov-on-Don. “Phoenix”, 2004, p. 12).

A known method of producing Damascus steel by welding various sheets of hard and mild steel (see ibid.).

The problem to which this invention is directed, is to obtain an industrial method for the manufacture of steel products with damask properties.

The essence of the proposed method is a combination of known technologies for the production of steel products. This solution combines powder metallurgy technologies with subsequent thermal and mechanical effects on the workpiece.

A method of manufacturing steel products having damask properties is to use a billet - a core of mild or elastic steel, on which a mixture of a powder consisting of flux, steel and carbon is applied (alloying elements can be added). The mixture with the core can be pre-machined. The resulting preform is placed in a refractory form, preferably airtight, in which it is heated to a temperature at which it is welded to the core. Then the workpiece is cooled in the form when the carbon-containing layer welded to the core reaches the fluidity necessary for further machining.

In this way, it is possible to make a product of any configuration and size, as well as to restore worn parts, while it is not necessary to heat the entire product, it is enough that the applied mixture is welded with the part, which will be the core.

Claims (3)

1. A method of manufacturing a steel product having damask steel properties, characterized in that a preform is obtained comprising a mild or elastic steel core with a layer of a mixture of flux, steel and graphite powders deposited on it, the resulting preform is placed in a refractory form and heated until melted mixture and welding it with the core, after which the workpiece in the mold is slowly cooled to a temperature when the carbon-containing layer welded with the core reaches the fluidity necessary for long-range neck machining. 2. The method according to claim 1, characterized in that an airtight refractory mold is used. 3. The method according to claim 1, characterized in that alloying elements are added to the powder mixture.