US1555978A - Metal stock - Google Patents

Description

llo Drawing.

Patented 5i cum-3o STATES.

imwxonx To all whom it may concem: I

Be it known that I, ANDREW M. HUNT, a citizen of the United States, residing at Niagara Falls, in the county of Niagara and State of New York, have invented-certain new and useful Im rovements in Metal Stock, of which the ollowing is a specification. Y

My invention relates to a metal stock and the production thereof, useful for various purposes. but more particularly in connection with thedeoxidation and purification of molten 'metals such as iron or steel'and nickel.

One of the objects of theinvention is the production. of'a. metal. stock comprismg a plurality of metal ingredients united by subjecting a mixture of the commmuted metals to high pressure.

Another object of the invention is theutilization of this briquetted material for treating molten metals such as iron or steel and nickel.

As a specific illustration of the-application of my invention, I may take 10-20 parts of powdered magnesium and mix the same with, 9080 parts respectively of powdered ferro-silicon or a mixture of powdered ferro-silicon and ferro-maganese.

.The magnesium mixture is then subjected to heavy pressure in a die'for the purpose of forming -a coherent briquet. Pressures as f high as 40,000 pounds per square inch have been found suflicient to'cause the -ingredi-,

ents to cohere. At this pressure the magnesium, on account of being the softer of the two metals and possesslng suificlent plasticity, will flow around and be uniformly disseminated between the harder and less plastic iron particles causing the ingredients to cohere in a firm hard briquet. If the 'mixture is subjected to 'a; temperature of about 300 degrees C. lower pressures may be employed in forming the briquet.

A-specific application of the utility of the magnesium-iron briquet is in connection I 4 with the deoxidation of molten iron or steel.

It is well known that magnesium is an efli'-' cient deoxidizer of molten iron, but limita-- tions of its use heretofore have/been dictated by the violence; of the reaction which takes place on adding the magnesium, causing the molten metal to be projected out of the holding receptacle. 1 The obvious expedient would be to add the magnesium in a diluted I 1,555,978'1 PATENT' OFFICE.

mnnnw 1r. HUNT, or NIAGARA FALLS, nnw Yonx, assrenon TO amnnrcan mnenns'mm conrona'rron, or NIAGARA FALLS, NEW YORK, A. oonnona'rron or METAL STOCK.

Application med August as, '1920. Serial 1%. 406,219.

form this diminishing the violence of the reaction; but the usual method of attaining this end, such as alloying themagnesium with iron under favorable conditions'cannot be availed of on account of the fact that briquet therefore has its specialutility in this connection in that small quantities of magnesium may be added to the molten iron without any of the above mentioned dis- 1 these metals do not readily alloy.; My-

advantages in carrying out this operation.

ess of refining iscarried on. Theaddition of magnesium to the molten nickel before casting the anode, obviates this disadvantage by the elimination of blowholes. The magnesium is added in the form of a nickelmagnesium briquet. This briquet is made in the same manner as the iron magnesium brlquet, nickel belng alloy in the mlxture.

While I have described the application of my invention in connection with magnesium' substituted for the iron and iron alloys and nickel, it is obvious that 1 other mixtures of metals possessing the necessary physical characteristics might be substituted for the metals named.

From the above description it will be apparent that 'I' have produced an article of the character described, which possesses the characterics enumerated as desirable, and while I have disclosed the preferred form of and method of using my invention, it will be understood that I reserve the right to .all changes properly falling within the spirit and scope of the appended claims.

I- claim: i

' 1. As a composition of matter, amechanical mixture of metals in the form of a compressed coherent mass and comprising dis- I seminated magnesium.

2. As a composition of matter, a uniform mechanical mixture of metals comprising magnesium and iron in the form of'a compressed coherent mass. A

3. As acomposition of matter, a uniform mechanical mixture of metals comprisin magnesium and ferro-silicon in the form 0 a com ressed coherent mass. 4. s an article of -1nanufacture,-a compressed metal briguet comprising a uniform mixture of hard ferrous and non-ferrous metals, the latter being relatively soft and plastic and acting as a binder for the former.

5. As an article of manufacture, a compressed metal briquet made up of a mixture of metals comprising magnesium and other relatively hard and non-plastic metals, the magnesium acting as a binder for the other metals.

6. The method of briquetting magnesium with a relatively harder and less plastic metal, comprising subjecting a mixture of the said metals in powdered form to a high degree of pressure whereby the magnesium will flow around and weld together the relatively harder ingredients.

7. As a com osition of matter, a uniform mechanical mixture of metals comprising magnesium, ferro-silicon and ferro-manganese in the form of a compressed coherent mass.

8. As a composition of matter, a mechanical mixture of metals comprising magnesium in the form of a compressed coherent mass.

t In testimony whereof I afiix my signaure.

ANDREW M. HUNT.