US1319500A

US1319500A - Method

Info

Publication number: US1319500A
Authority: US
Publication date: 1919-10-21
Anticipated expiration: 1936-10-21

Description

T. M. WHALEN.

METHOD AND APPARATUS FOR FORMING STEEL INGOTS.

APPLICATION FILED EB. 28, m9.

1,319,500. Patented Oct.21,1919.

- 3mm wtoz THOMAS M. WHALEN, 0F ERIE, PENNSYLVANIA.

METHODAAND APPARATUS FOR FORMING STEELINGOTS.

Specification-ofietters Patent. Patented Oct. 21, 1919.

Application filed February 28, 1919. Serial no. 279,786.

T 0 all whom it may concern:

Be it known that I, THOMAS M- WHALEN,

a citizen of the United States, residing at Erie, in'the county of Erie and State of Pennsylvania, have invented new and useful Improvements-in Methods and Apparatus for Forming Steel Ingots, of which the following is a specification.

This invention relatesto the method and apparatus for forming steel ingots and consists 1n certainnnprovements therein as Wlll be hereinafter fully described and pointed out in the claims.

In the forming of steel ingots it is common to place the molten metal in a mold and permit it to cool in the mold. In the cooling of the ingot there are certain faults. The purpose of this invention is to remove to some extent, at least, such faults.

The apparatus is illustrated in' the accompanying drawings as follows The view shows an elevation of the apparatus partly in section.

1 marks the shell f the 2 a cast iron cooling base. The shell at its base is flanged and a gasket 3 is arrangedbetween the flange and the base. The shell is secured to the base by bolts l. A cover ring 5 is mounted on the top of the shell 1, the shell being flangedto receive the ring and a gasket 6 is arranged between the ring and the flange. A cover 7 rests on the ring 5 preferably seated with a tongue and groove joint 8. The cover is secured with eye bolts 9 by means of which it may be clamped to the shell. A mold 10 is arranged in the vacuum case. The mold is provided with a removable bottom 11 and the ingot metal. 13 is indicated in the mold by dotted lines. A cooling coil 12 is ar-' ranged in the base 2 so that the heat may be taken from the metal 13 in the mold i0 and dissipated through a-medium such as air or water being caused to flow through said cooling coil 12. r

A vacuum pump 14 is connected by a pipe 15 with the vacuum case. The pipe 15 is provided with a valve 16 by which the communication with the case may be closed. 7

A controlling valve 17 is arranged on the cover by means of which the. degreeof vacuum may be varied. in carrying: out my method the molten metal is poured into the mold in the usual manner, the mold having been previously arranged in the vacuum case as shown. The cover is then is extended. an almost perfect insulation is provided the bottom. progressive and the top of the metal revacuum case, and

put inplace so that the .case is sealed and the air is exhausted from the case to a greater or less degree as desired.

The inclosure of the mold. within the case, thus forming what might be termed a dead air space, would in itself form to some extent an insulation around the mold and consequently temper the -coong ac:

tion so'that a portion of the coolmp action at least would take place from the bottom. I

By exhausting, the air from the case the mold is more or less perfectly insulated depending on the de ree to which the vacuum With an exhaustion of the air around the mold and consequently the cooling takes place almost, if not entirely, from Consequently the cooling is mains moltenfor a longer period and thus accommodates itself to the shrinkage. In this way the usual faults are largely, if not entirely, elnninated.

V Further'the exhaustion of the air makes the space in which the metal is placed prac V tically inert and, therefore, the deleterious chemical changes are obviated. This is particularly true with some alloys.

It may be desirable to provide the observation openings 18 in the case, these.

openings being sealed by some transparent material.

What I claim as new is: 1. The method of forming steel ingots which consists in placing molten steel in a mold; insulating-a portion'of the mold;

and cooling the steel from that portion of the mold not insulated.

2. The method of forming steel ingots which consists in retarding by insulation the cooling of a column of molten steel and cooling the same from the bottom of ,the

column.

3. The method of forming steel ingots its which consists in placing a mold containing molten metal in a space insulated from thesurrounding air; and cooling the metal from the bottom. 7 i

h 4:. The method of forming steel ingots which consists in plac F mold; placing this mold in a space insulated bya partial vacuum from the surrounding air; and cooling the metal progressively by dissipating the heat from one part of the metal.

5. The method of forming steel ingots.

molten steel in a which consists in placing molten metal in a mold; inclosing the mold in a space made more nearly inert than atmospheric air; and coolin the metal in said space.

6. fhe' method of forming steel ingots Which consists in placing molten metal in a mold; inclosing the mold in aspace made more nearly inert than atmospheric air by the formation of a partial vacuum; and cooling the metal in said space.

7. The method of forming steel ingots Which consists in placing molten steel in a mold; inclosing the mold in a space; insulating the mold from the surrounding atmosphere; rendering the same more nearly inert than atmospheric air; and cooling the steel from the bottom 8. In an apparatus for forming steel ingots, the combination of a mold; a vacuum case in which the mold is placed; mean for exhausting the air from the case; and means for cooling the' bottom of the mold.

9. In an apparatus for forming steel ingots, the con'lbination of a mold; a vacuum case in which the mold is placed; means for exhausting the air from the case; means for cooling the bottom of the mold; and means for controlling the degree of vacuum.

10. In an apparatus for forming steel ingots, the combination of a mold; an insulating case in Which the mold is placed; and means for cooling the loottom of the mold.

In testimony whereof I have hereunto set my hand.

THOMAS M. WHALEN.