US1098346A - Producing metal alloys. - Google Patents

Description

LEON eonnunnsrnm, or NEW YORK, N. Y.

PRODUCING METAL ALLOYS.

No Drawing.

To all whom it may concern Be it known that 1, LEON Gonnnrnnsrnrn, subject of the Czar of Emma, res dmg in New York city, in the borough of Manhattan and State of New York, have invented certain new and useful Improvements for Producing Metal Alloys; and I do. hereby declare the following to be a full, clear, and

exact description of the invention, such as will enable others skilled in the art to which I, it appertains to make and use the same.

The invention relates to a process ofproducing metal alloys without the use of e ther such additions as ferro-alloys in the case of steel, or corresponding alloys in the case of copper, or the addition of the alloyed metal in metallic form, but by adding the metal alloyed in a chemical combination wlth fluorin, and has for its purpose the'production, of metal alloys containing all the desired constituents, but free from such undesirable constituents as phosphorus, sulfur, and arsenic, with the resultthat alloys thus produced have a higher resisting power to chemical corrosion and mechanical stresses.

From what is known'now about the metallurgy of iron, it appears that the following causes contribute mainly to weakening of iron alloys (the same, with such modifications as to the action of phosphorus as have so far been established, applies equally well to copper alloys) lack of homogeneity due to the action of occluded gases during cooling; inclusion of slag particles, andaction of sulfur and especially phosphorus. Additions like titanium and aluminum are mainly expected to take care of the gases which would otherwise be occluded in the iron, titanium giving on the whole better results than aluminum because it can elimi nate nitrogen as well as oxygen. None of the so called deoxidizers or purifiers hitherto used have been able to eliminate sulfur.

and phosphorus as well as the gaseous inclusions, and at the same time to produce a general purification and more uniform setting and cooling of the iron or copper alloy.

Since fluorin is a gas of such properties as to make its handling under shop conditions entirely unpracticable, it is added to the metal bath, either at melting or in casting, in such chemical combinations as dissociate, that is to say decompose at the temperature of the bath, and do not add to the alloy undesirable constituents. As such combinations may be used nickel fluorid, manganese Specification of Letters Patent.

Patented May 26, 1914.

Application filed January 17, 1913. Serial No. 742,694.

fluorid or sesquifluorid, chromium fluorid, or any other fluorid or fluorin combination satisfying the above stated conditions. Should it be found however that the alloy is so proportioned that any extra material is undesirable, iron fluorid and copper fluorid may be used in their respective cases, i. 6. iron fluorid with iron alloys, and copper fluorid with copper alloys. The proportion of the fluorid thus introduced depends-entirely on the chemical constituency of the alloy and the purpose of the addition of the alloy. As little as 0.1 of one per cent. of fluorid to 100 per cent. of the alloy by weight may be introduced when it is desired only to eliminate small amounts of phosphorus or sulfur present, while considerably larger amounts, up to 12 per cent., and even still more, may be introduced when the object sought isan alloy of particular strength and toughness. Flourin may thus be usefully introduced into practically all binary, ternary and quaternary alloys of iron and copper, with the exception of copper alloy known as phosphorus bronze, unless it is desired to eliminate some of the phosphorus there present.

I claim:

1. A process of producing alloys, com' prising adding to a metal mass a compound of fluorin with another element, having an atomic weight in excess of forty-one.

2. A process of producing alloys free from undesirable substances. initially present therein, comprising adding to a metal mass containing such substances a compound of fluorin with another element, having an atomic weight in excess of forty-one.

3. The process of producing alloys, which comprises adding to a bath of molten metal containing an impurity, a fluorid of a metal which is dissociated at the temperature of the bath, thereby removing the impurity and forming an alloy between the metal from the fluorid and the metal of the bath.

4. The process of producing alloys, which comprises adding to a bath of molten iron containing an impurity, a fluorid of a metal which is dissociated at the temperature of the iron, thereby removing the impurity and forming an alloy between the metal from the fluorid and the iron of the bath.

5. The process of producing alloys, which comprises adding, at the time of casting, to a bath of molten metal containing an impurity, a fluorid of a metal which is dissociated WHY; 1,098,36

- 10 by removing the impurity and forming an alloy between the metal from the' fluorid and the iron of the bath.

Signed in New York city, in the borough of Manhattan and State of New York, in the presence of two Witnesses.

LEON GOLDMERSTEIN.

Witnesses:

F. B. GARRAHAN, E. J. GIBLING.