DE37376C - Process for the production of nickel steel - Google Patents

Description

IMPERIAL

PATENT OFFICE.

CLASS 18: Ironmaking.

The present invention relates to the manufacture of a new type of steel, which both in terms of its properties and in terms of the constituents of the previously known types of steel. This steel does not need any hardening in order to prepare it for use; the one required for the intended use Rather, the degree of hardness is only produced by impact or pressure and still gives nothing inferior to the best-hardened varieties.

The composition of this steel is as follows:

Soft iron .... 0.95000 kg

Nickel 0.05000 -

Manganese metal. . . 0.01000 aluminum .... 0.00050 -

Tungsten 0.00075 -

Potassium Iron Cyanur 0.00500 -

1.01625 kg.

The mixing ratio of these constituents can, within certain limits, vary slightly experienced, but the above information corresponds to the best found by experiment Results.

For lower degrees of hardness, the addition of tungsten will be reduced accordingly.

That obtained by melting the above constituents in the given proportions Steel is very brittle when cold, so it should only be used at the beginning of the cherry-red glow machined, and a uniform heating of all parts can be observed before forging. After being eliminated at this temperature, be it as turning steel, planing steel, drilling steel or too Vices, etc., allow the steel to cool down gradually in the open air; the finished The tool can then be sharpened by grinding at will.

In the manufacture of chisels, punches and similar striking tools, one becomes must weld the steel together with soft iron in a known manner; it is not there necessary to harden the hardened part. The uniform hardness of the steel would be be very detrimental to these tools; the simple reinforcement gives a Meifsel, Punches and similar striking tools that meet all requirements and are much cheaper are as such made of solid steel.

While when melting in the crucible, how such is appropriate for the present new type of steel recommends that, until now, cast steel could only be produced if the material was already melted was previously transformed into steel, this "nickel steel" is made in a single melting operation finished; the same is done as follows:

The iron is put into the crucible with the nickel and the latter through a lid locked. The crucible is placed in a furnace with a fan. After the iron fused with the nickel, the manganese metal or an oxide of the same becomes at the same time with the tungsten and the potassium iron cyanur added. After a few minutes, during which the manganese with the others Agendas merge and the reaction takes place, the, mass with a red-

agitated glowing plombagin stirring stick, then add the aluminum and stir a little further. Then the alloy is heated again and in any mold poured, which closes as airtight as possible and previously with a thin coating of Coal thunder, which does not contain ammonia water, is coated.

Claims (1)

Patent claim: The process of making one that preserves all the properties of the steel and one Hardening of non-required alloys made of soft iron, nickel, manganese metal or its oxides, Aluminum, tungsten and potassium iron cyanur, approximately in the composition of: Soft iron .... 0.95000 kg Nickel 0.05000 - Manganese metal. . . 0.01000 aluminum .... 0.00050 - Tungsten 0.00075 - Potassium Iron Cyanur. 0.00500 - 1.01625 kg