US1070106A - Ingot-mold. - Google Patents

Description

W. R. BOSSINGER.

INGOT MOLD.

APPLIOATION FILED PBL 14, 1913.

Pateted Aug. 12, 1913.

' WILLAM n. iossmenn, or numron, OHIO.

IitGo ruMoLD.

Specication of Letters Pate-nt Patented Aug. 12,1913.

` Application filed February 14,1913. &named-18,471'.

To all 'whom' it may concem: I Be; it known that I, WILLIAM RBos- SINGER, a citizen of 'the United States, residing in Marian, in the county of Mari'on and State of Olo 'have invented or discovered certain new and useful 'Improvements in- .Ingot-Molds, of which the following is -a specification. j

My inventon relates particularly to that type of nolds, wherein are cast iron or steel ingots or other casting& l

Thefprimary object of my invention is to provide a mol that will produce 'solid ingot castings w 'ch' will be practically free from all blow-holes, pipes, cavites segre- 'gation andother defects usually found in 'such castings.. I

'A' further object of my invention 'is to provide a mold that will be 'artificiallyj cooledin-oneportion, will possess normal i i radation in` another portion,` and in the remanng portion will be so designed as 5170 artificially retard radiation and to permit: thechemical creation of heattherein.

Other obj'ects and advantages of the invention will be appar ent during the, course 'of the following description. I

I the accompanying drawingmjorming a part of this specificationhnd ingwhich like letters are employed to designate like parts throughoutthe same, Fig're 1 shows a L vertical section of my inold .with an ordinary base. Fig.- 2 shows a transverse section of my mold at the line Y--Y in Fig.`1, A looking from above; Fig. 3 is a view of the top of'themold. Fig. 4:4 shows a vertical section of that partof the mold from the line? Y-Y in Fig: 1, downward, buto'f a some; what different 'In this modified; form, the cooling ca'vities are horizontal ni stead of vertical as -n Fig. 1,. and -Fig. 5' shows a transverse sectional view'of the.

- quadrangular passageF, v

' For purposes of-explanation, Iny niold s divided into' three' portons or 'zones', each djferentiated ..from

'portion or zone be ereit const-ucton of the other two,' hy a di its walls.

In the drawings, wherein is illustrated'a 9 profet-red embodiment of 'my inventior," the* lower portionof; the mold is represented by the zone A, which zone includes-that por:: 'ton of the mold from'the line Y--Y in Fig..

1 to the'bottom ereof., In this zone, the g .55 mold has a base an, et E, a quadranglar iassage F inner side-walls G, outer sidewalls' I, spaces'or cavities between said sidewalls, designated by the letter H, and ex-- hausts-J, The side-walls Gr r,have inner surfaces K, and outer surfaces K The sidewalls I have .outer surfaces L andinner surfaces L all as shown in 1.- The o'uter surfaces K of the side-walls G, and the inner surfaces L of the side-Walls I, merge together at the mold bottom Z, at the cor- .ners N and. at the zone top Y, forming thereby the 'inclosin walls of the said cavities H, subtantia lyas shown in F igsi 1 and 2. The inlet E communicates directly with the continuous assage-F, which, 'in

tur-11, commu cats drectly with the vari- 4 ous c'avities Each of the" foursides of the nold may have a single cavity H, or

twp or more smaller; cavties separated from each other by partitions H 'which last preferred desi cavity may ave-its 'own exhaust J, on as the preferred design shown in the drawings, .the partitions H are not extended fullyto the zone top Y, thereby causingall of he ,is-shown l Fig. 2.' Each jI-I in any ene side of the m ra t open into one general cavty communicatngdirectly with the exhai st J. The said cavities .H mayelso extend entirely around the inner wall G" and be a simple Upward' extension of the passage F. r

In a 'mold constructed as above men; tioned, coldwate?, air or other cooling compound maybe otced through the inlet'E into the passage F, and by the constant're- 'ewal of such cooling compound`compelled to continue n ward'into the cavities Hrand out through t e exhausts J. The said walls G and I will be thus' in. pnterrupted contact 'with: the cooling compound in 'the cavities H .andethereby causeythe tempera- `tre of .said walls to be s'ubjectedto gradual `re duction, efl'ecting thereby a grater radaincluded in is zone. i e

' The iddle portion of is represented by 'the' zoneB 'and includesthat portionof the mold from the line Y--Y to the line X- X, as shown in`-Fig, 1. In this' zone'tt 'mom ,has :side was M within- 'terio'r surfaces K and %guter surfaces L; *Said wallzs are normal and the heat radiation7thr6ugh 'same slower than-iu the zone- A; In use, such 'slao wer` radiation eause t e# r ie ee s e a e rthe nga y which convey the cooling compound extend a, cover may be placed^on the mold, the fasexistingin the cooler portion of the casting said'zone B to remain in a molten state longer than the portion contained in the zone A, with the result that the force of gravity will cause-the still molten metaLin the zon, B to flow intoall cavities,"-pipe, and the like existing in the portion of the casting contained in the zone A, and thereby eliminate these defects.

The up'per portion of ny mold is'represented by the zone C, and includes all that part of the mold above the line X-X, as shown in Fig 1. In this zone, the mold has main side-walls P, a refractory lining R, handles O and cover fasteners S. The sidewall P are of the same material and con? struction as the walls in the zone B, but have recesses cut in the interior surfces thereof to receive the lining R which may consist of fire-brick, clay or other refractory substance, all ass own in Fig. 1. This refractory lin lkretain the heat, and cause the metal of the casting to remain in afluid or molten ta'te longer than it other ise would, with the result, that as ex laine above with refen'ence to the' zone the force of gravity .will cause the still molten metal in the said .zon e ,C to flow into all cavities, pipes etc.

in the zone B, and thereby eliminate these 'defectsl *The handle's O are metal protuberances to which maybe attached 'the ordinary forms of stripping machinery.- i

The interior. of the mold is of a modified conical form, so that the diameter of the castig will be greater .at the bottom than at'the top, enablingthe mold to be stripped from the casting without inversion. a Fig. 4 represents a difl'erent design of the zone A, in which the cavities' or passages horizontally or at right anglesto the length of the mold, the letter T designatin the inlet, U, the passages or cavities and the xhaust.:

All parts of the mold excepting the refractory liningR, are compose'd of cast iron, steelpi; other metal or material. If desired tenings 'for same, as before mentioned, being designated by the letter S. j

It isto be understood that the form. of my invention herewith shown agd* described, is to be taken .as a preferredexam le of the I same, and that changes in the thclmess of; "the wa1ls,"size of the p'assages, inlets or'ex- 'part-s or any' part may be constructed mayi be resorted -to without departing from the pirit of my invention or the 'scopo of the' sub-joinedclaims.

same .sfilled to'within about one inch 'from "mainde" 4 C foregong descrption, it is obvi- 115 the top the -cof; Withinfrom two tofive minutes, which time, I have ascertained by experiment, the cooling compoundis forced by pumping or otherwise through the inlet E into thepassage F and up intothe cavi- 'ties H, in the zone "A, resulting in the rapid cooling of that portion of the casting in the said zone A. This 'cooling of the said portion of 'the casting being greatest atthe eirv treme bot-tom end thereof because of the cooling compound bein constantly renewed at this point, and *gra ually decreasing as the 'upper portion of the zone- A is approached, by, reason of the temperature of such cooling compound being constantly inv creased as it rises in the cavities H, it having been longer subjected to the heat of, the casting, 'Said cooling compound then passes out 'through the eexhausts J, constantly carrying 'withit the heat from the casting, which heat is dissipated' in the surrounding atmosphere. 'As before stated, such cooling compound is unceasingly renewed, until the casting is 'wholly congealed. i i 'As the metal of the casting `at the extremeebottom portion 'thereof cools, the resulting natural contractio leaves cavities in the metal, which, if unfi iled, ,become per-. manent, but the metal above-being still in the fluid state flows' downward andcom- 'reason of the increasingly 'refractory conditon ofthe walls of the' mold in the zone B and the zone C, the metal of the casting gradually cools from the bottom upward,

'and'as itcools, the cavities fo'rmed, 'as afore said, b the natural contraction`of the cool ing me al, are continuall'y iiillel, by thle force ui meta from of gravity, by the 'stil above. This process is 'constantly being repeated toward the top of the casting', untilthe ,same-is'wholly congealed;

By experiment I `have ascertained thatfo the zoneA will ,occupy about onehalf of' the length of .the mold, the zone B, about one thir-d of the length: and the zone C,'the re-` From the o th'atmy inventionowill :provideamold, suitable -for the,present equpment of mills, and which, byreason f the .constantly accelerated radiation from the-top'downward,

will 'cause all pipesgete* to be filled, assoon as formed, from thestill molten-metal from above i v Having thus described my 'inventioin .I' cla m e 1- A lowerportion rovi ed 'withpassages and cavities where y uchlower portion'may be, artificiallycooled, the side-wa'lls of its middle portionsolid and normal with nor',-

mal beat radation,` and 'the side-walla of its --s its lower portion provided with upper portion provided with ref'actory lining for protective purposes and for the artificial retention of heat.

2. A mold, the side-walls of which, are, in passages and cavties whereby artificial cooling may be efl'ected, in its middle portion, normal and solid, and in its upper portion lined with refraeto'y substances to retain heat,

whereby the metal cast in such mold will re- 10 main in a molten state longest at the top thereof, and'by the force of gravity descend and fill allcavities formed by the more rapid cooling below.

R. BOSSINGER. witnesses:

T. J. MLs, STELLA ALIEN.

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