US627835A

US627835A - Apparatus for casting and heating ingots.

Info

Publication number: US627835A
Application number: US62456197A
Authority: US
Inventors: Samuel T Wellman; Charles H Wellman
Original assignee: WELLMAN SEAVER ENGINEERING Co
Current assignee: WELLMAN-SEAVER ENGINEERING Co; WELLMAN SEAVER ENGINEERING Co
Priority date: 1897-02-23
Filing date: 1897-02-23
Publication date: 1899-06-27
Anticipated expiration: 1916-06-27

Description

No. 627,835., Patented June 27, I899.

s. T. & c. H. WELLMAN. v

APPARATUS FOR CASTING AND HEATING INGUTS.

(Application filed Feb. 23, 1897.),

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M. E Y ATTYE m: NORRIS PETERS co. momuruo" wnsums'rom n. b.

Nu. 627,835. 7 Patented June 27, I899.

' s. T. & c. H. WELLMAN.

APPARATUS FDR-CASTING AND HEATING INGOTS.

(Application filedTeb. 28, 1897.) (No Modal.) v 2 Sheets$heat 2.

MTNE SEE UNITED STATES P TENT EEICE.

SAMUEL r. WELLMAN AND CHARLES H. WELLMAN, OF CLEVELAND, orno, ASSIGNORS TO THE WELLMAN-SEAVER ENGINEERING coMPANY, or

SAME PLACE.

APPARATUS FOR CASTING AND HEATING INGOTS.

srE'cIEIoATIoN forming part of Letters Patent No. 627,835, dated June 27, '1 see-.- Application filed February 23,1897. Serial No. 624,561. on model.)

To all whom it may concern:

Be it known that we, SAMUEL 'I.WELLMAN and CHARLES H. WELLMAN, citizens of the United States, and residents of Cleveland,

county of Ouyahoga, and State of Ohio, have invented certain new and useful Iinprove-.

ments in Apparatus for Casting and Heating Ingots, of which the following is a specification, the principle of the invention being to herein explained and the best mode in which we have contemplated applying that principle so as to distinguish it from other inventions. A

The annexed drawings and the following description set forth in detail certain mechanism embodying the invention, such disclosed means constituting but one of various mechanical forms in which the principle of the invention maybe used. In said annexed drawings, Figure I represents a plan of our improved steel plant.

Fig. II represents a side elevation of the heat:

heating-furnace O. Thetrack before enter-j ing the said furnace drops on an incline for a short distance, and upon emerging therefrom it' rises to 1ts original level. This depressed portion is kept filled with water by 0 suitable water connections.

A traverser D, carrying a tilting or other suitable ladle d, which may be filled from the furnaces A, runs over the said track B.

Mold-buggies E run upon the track B and 5 carry the ingot-molds e, which are filled from the ladle d.

L A mold-stripper F is suitably located'over track B and is adapted to strip the molds from the ingots, leaving them bare upon the bug- 5o g-ies before entering the heating-furnace.

The buggies E are provided with a fire-brick stool f, of somewhat larger surface dimensions than the base of the ingots. The molds are 7 so placed that the stool f receives all of the hot-metal contact from the ingotand is soon 5 5 heated to a high degree. The ingots are therefore not chilled upon being cast thereon and are thus much more evenly heated in the furnace than would be the case if the ingot were cast upon a substance having a lower degree of temperature. The fire-brick, being oflow conductivity and having a high degree of specific heat, retains its temperature, and' once having been heated it is always ready and hot for the next casting. The fire-brick is easily removable and can on burning out be easily replaced or repaired. The buggies arefurther formed with flanges f, adapted to center the mold and thus secure the proper relative position of the ingot and the stool f. Overlapping sides f extend over the wheels of the buggy-truckand are cut off squarely at the front and rear, extending downwardly to within a short distance of the road-bed.

The ends of the sides are adapted to close upon and fit against the adjacent end of the next buggy, as is shown in Fig. III. These sides extend into the water, filling the depression, and thus protect the trucks of the buggies from destruction by the heat of the fur- 8o nace. The buggies may be constructed to accommodate any required number of ingots.

. Those re resented in the drawin s carr two.

The furnace O is constructed in the form of an elongated'chamber lined with a fire-brick lining 0 built upon the wall in the usual of the top of the buggy is thus exposed. An

air-passage c is provided between the arch of the flue or chamber and the covering c -1oo through which air admitted into the forward end passes over the heated arch, becomes heated and enters the combustion-chamber 0 where it mingles with gas from the gas-flue 0 leading from a suitable producer. The hearth of the combustion-chamber is raised above the bottom or rail-bed of the furnace, and the track passes out of the chamber beneath the said hearth. The height from the top of the rails-that is, from the base of the transporting-cars to the lower surface of the hearth above the cars when passing beneath the hearthis less than the height from said base to the 'top or highest point of the ingot while being transported upon'said cars. The cars when unloaded may hence pass out beneath the combustion-chamber. A door c is provided in the top of the furnace just beyond the end of the bottom of the combustionchamber, through which the ingots may be lifted from the buggies. Suitable doors 0 are also provided for the admission and exit of the buggies.

A suitable mechanism is provided at the entrance of the furnace for properly moving the cars through the furnace.

The operation of the plant is as follows: The molten metal is run into the ladle cl, suspended over the track B, from which it is poured into the molds e, standing on the buggies E, or is poured directly into molds. After the metal is sufficiently set the buggies are run under the stripper F, where the molds are stripped, leaving the ingots bare. They are thereupon'run into the furnace, through which they travel slowly and become gradually heated until they reach the end of the furnace beneath the unloading door cflwhence they are removed and are ready for the rolls.

The furnace may also be used for reheating cold ingots.

The action of the furnace in the case of the introduction of cold ingots for reheating is somewhat different from the action in the case of the hot ingots right from the molds, the action in each case being salutary.

In the case of cold ingots the heat is brought up gradually by means of the progression of the ingot from the coolest end of the furnace to the hottest, thereby avoiding the contingency of melting off the outside while the inside is cold,which occurs in the usual method of placing the cold ingot directly into the heating-furnace and subjecting it immediately to the extreme temperature, so that by my improved means the ingot is heated up evenly and to nearly the required heat before being subjected to the final temperature.

In the case of hot ingots the molds are stripped off as soon as the outer metal is sufficiently set, which leaves the inside of the ingot in a liquid state. By introducing the ingot in this manner into the coolest end of our furnace the molten metal is given a chance to set, and the outside and inside gradually reach the same temperature from different directions. Meanwhile, however, the ingot has been progressing into the furnace, so that when it reaches the end of its travel it also is in a homogeneous evenly-heated condition, a condition, as is well known, appreciated by the steel-worker. Each buggy then constitutes one of a continuous train, which gradually on removal of one of the buggies at the exit progresses, the empty buggies being returned for repeated use on the track B, connected by a suitable switch I) with track B.

The entire operation of casting and reheating the mechanism herein disclosed, provided the means covered by any one of the following claims be employed.

We therefore particularly point out and distinctly claim as our invention-- l. The combination of apparatus for producing molten metal, a car-track adjacent to said apparatus, a car adapted to run upon said track, means for casting ingots upon said car, a heatingfurnace embracing a portion of said track, said portion being depressed below the level of the track located without said furnace, water covering said depressed portion, said car adapted to travel through said heating-furnace, substantially as set forth.

2. The combination of apparatus for producing molten metal, a car-track adjacent to said apparatus, a second track adjacent to said first track and suitably connected therewith, a car adapted to travel upon said tracks, means for casting ingots upon said car, a heating-furnace embracing a portion of said first track, said portion being depressed below the level of the track without said furnace, Water covering said depressed portion, said car adapted to travel through said heating-furnace, substantially as set forth.

3. The combination of apparatus for producing molten metal, a car-track adjacent to said apparatus, a car adapted to travel upon said tra ck,a heating-furnace embracinga portion of said track, said embraced portion being depressed below the level of the track without said furnace, waterin said depressed portion,and means adapted to gradually move said car through said furnace, substantially as set forth.

4. The combination of apparatus for producing molten metal, a car-track adjacent to said apparatus, a car adapted to travel upon said track, an elongated heating-furnace embracing a portion of said track, said embraced portion being depressed below the level of the track located without said furnace, water in said depressed portion, said heating-furnace provided with a hot and a cool end, and means adapted to advance said car gradually from said cool tosaid hot end, substantially as set forth.

5. The combination of apparatus for producing molten metal, a car-track adjacent to said apparatus, a car adapted to travel upon said track and adapted to carry an ingot-mold, means for casting met-a1 into said mold, a heating-furnace for receiving said car and ingot upon the latter, said furnace embracing a portion of said track, said portion depressed below the level of the track locatedwithout the furnace, Water in said depression, and means for stripping the molds from the ingot and car before the latter enters the furnace, substantially as set forth.

6. The combination of apparatus for producing molten metal, a car-track adjacent to said apparatus, a car adapted to run upon said track, means for casting ingots upon said car, a heating-furnace embracing a portion of said track, said portion being depressed below the level of the track located without said furnace, Water covering said depressed portion, said car adapted to travel through said furnace, and means for unloading said cars before their exit from the said furnace, sub stantially as set forth.

7. The combination of a heating-furnace having a combustionmhamber at one end,

- means for transporting ingots from the other end through the furnace, said means passing out beneath said combustion-chamber, and I I means for unloading said transporting means before leaving the furnace, substantially as set forth.

8. The combination of a car-track, a heating-furnace embracing said track and consist-. ing of a heatin g-chamber provided with a combustion-chamber at one end, said track passing out of the furnace beneath said combustion-chamber,a car adapted to run through said chamber upon said track, means for movingsaid car from the opposite end of the chamber toward the combustion-chamber,and means for unloading said car intermediately of said opposite end and of the said combustion-chamber, substantially as set forth.

In testimony that We claim the foregoing to .be our invention We hereunto set our hands this 3d day of February, 1897.

SAMUEL 'r. WELLMAN.

CHARLES H. WELLMAN.