US1022343A

US1022343A - Feeder for ingot-molds.

Info

Publication number: US1022343A
Application number: US67309812A
Authority: US
Inventors: Ernest J Turner
Original assignee: BLOOMFIELD H HOWARD
Current assignee: BLOOMFIELD H HOWARD
Priority date: 1912-01-24
Filing date: 1912-01-24
Publication date: 1912-04-02
Anticipated expiration: 1929-04-02

Description

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1,022,343. Patented Apr. 2, 1912.

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ERNEST J'. TURNER, 0F PITTSBURGH, IENNSYLVANIA., ASSIGNOR OF ONE-THIRD T0 BLOOMFIELD H. HOWARD, F ASPINWALL, PENNSYLVANIA.

FEEDER FOR INGOT-MOIiDS.

Bpeoicationrof Letters Patent.

Patented Apr. 2, 1912.

Application filed January 24," 1912. Serial No. 673,09-8.

To all whom' 'it may concern:

Be it 'known that I, ERNEST J. TURNER, a citizen of the United States, and a resident of Pittsburgh,in the county of Allegheny and State of Pennsylvania, have invented certain new and useful Improvements in Feeders for Ingot-Moldsf,of which the following is a specification. My invention rela/tes to the manufactureof steel and iron ingotsand has for its ob' gots, theyhave been foiind impracticable.

This is due to the fact that they have contracted portions or throatswhich so retard the flow of the molten metal that it becomes cooled, or what is known in the trade lfreezes in the feeder, so that it will either not flow through the feeder, or if it does, it flows very slowly and this together with the fact that it enters the mold only at the center, theimetal at the sides of the mold oxidizes, and consequently when the inliowing metal does spread out toward the sides, it Hows over this oxidized surface, and the result is that lateral pipes, or seams or both are formed in the ingot.

I have found by experiment that in order to prevent piping and seaming in casting ingots it is necessary that the molten metal be poured into the mold in a highly heated state and as rapidly as possible.

With this in view I have devised 'a feeder made of refractory material so that' it can be heated and I provide it with a large and unrestricted opening or passage through which the molten metalis poured into the mold, so' that the metal is prevented from being chilled and flowing rapidly through ,50' the feeder, it distributes itself evenlythroughout the entire surface of the mold, thus reducing piping fand seaming to a minimum.

A practical embodiment of the invention is represented in the accompanying drawing forming a part of this speclfication, in

which similar characters of reference indicate corresponding parts in all the views.

Figure 1 is a sectional view of the im provement showing it applied to a mold with an ingot therein, theingot and mold being broken away and in section; Fig. 2 is a perspective view of the feeder on an enlarged scale, and Figs. 3 and 4 are sectional views of modifications.

Referring to Figs. 1 and 2 of the drawing,

`A is a mold of any approved construction, a

an ingot ltherein, and B the feeder. The feeder B is formed of fire clay or other refractory material and consists of the body b. and neck b integral with the body and of a size to t snugly in the mold. The body `b is made quite large so as to retain the heat and it may be square, round or any other suitablel shape.

At the junction of the neck with the body a shoulder b2 is formed and through the body and neck a passage or opening b3 extends. The portion of the passage or opening b in the body .of the feeder is of uni-v form diameter, while the portion in the neck is of gradually increasing diameter from its upper to its lower end. The varying diameter of the opening or passage in the neck is formed by beveling the inner surface of the wall of the neck downwardly and outwardly. This beveling of the wall of the neck not only enlarges the passage or opening of the neck, but it reduces the thickness of the wall of the neck at its lower end, so that the metal can readily flow to the sides of the mold clear vup to the lower end' of the said neck. I

The wall of the neck yof the feeder is made as thin as possible consistent with strength, so that the passage or opening through 'the feeder can be made nearly of as great a diameter as the diameter of the mo d, so that a large quantity of molten metal can be poured into the feeder, and as the passage or opening thereof is unrestricted it passes rapidly through the same into the mold.

In Fi 3 I have shown the opening or passage of the feeder B of uniform diameter throughout. In other respects the feeder is simllar to that shown in Figs. 1 and 2. While this form gives good results, yet I prefer to form the opening or passage of the neck of the feeder of gradually increasing diameter as shown in Figs. 1 and 2.

' two necks b5 and be of unequal length so that it can be. reversed for casting ingots of different lengths. The body b* is of uniform diameter throughiout instead of tapering,

as shown in the other figures.

Tn operation the feeder being heated it is placed upon the mold with its shoulder resting upon the end of the mold and its neck extending into the same. The molten metal isy now poured as usual in forming large ingots, from a ladle into the feeder, and owing to the feeder being` heated and having a large and unrestricted passage or opening, the molten metal is vkeptheated and `liowing rapidly through the feeder into the mold, distributes .itself evenly throughlout the whole area of the mold so that, a

homogeneous ingot is formed.

Tt. will thus be seen that T have produced a very simple, cheap and eiiicient feeder and one especially adapted for casting large ingots.

Having thus described my invention, what T claim and desire to secure by Letters Patent is:

l. As a new article of manufacture a feeder for ingot molds, formed of refractory material and comprising ,a ing an unrestricted passage and provided at one end with a neck adapted to extend into a mold and having a comparatively thin wall and a shoulderat :the junction of the neck With'tlie body to rest upon the end of the mold, the passage of the body being of uniform. diameter and the passage of the neck being o\f gradually increasing diameter from its upper to its lower end.

2. As a new article of manufacture a feeder for ingot molds formed of refractory material and comprising a body having an unrestricted passage and provided at one end with a neck to extend into a mold and with a shoulder at the junction of the neck with the body to rest upon the end of the mold, the wall of the neck being compara'- tively thin, whereby the passage through the feeder will be of a diameter nearly equal to that of the mold upon which the feeder is used.

ERNEST J. TURNER. Witnesses:

CHAs. S. SHAEFFER, P. T. SIEBERr.