US1388534A - Mold for ingots and other heavy steel castings - Google Patents

Description

R. VILLAGE. MOLD FOR INGOTS AND OTHER HEAVY STEEL CASTINGS.

, 1 APPLICATION FILED JAN. 26, 1921- 1,388,534: Patented Aug. 23, 1921. 2 SHEETS-SHEET 4! I F4 71. v )6 15 k. 2V {fl jj l 10 11 y mll m i a -i J $5 11 1 5 1 I J y I 1% R. VILLAGE.

MOLD FOR meors ANDOTHER HEAVY STEEL CASTINGS.

APPLICATION FILED JAN. 25,19 21- Y 1,388,584, Patented Aug. 23, 1921.

2 SHEETS-SHEET 2.

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ROWLAND VILLAGE, OF ECCLESALL, SHEFFIELD,

mom) For.- meo'rs AND o'rnnn. srmn. GASTINGS.

Specification new; Patent. Patented Aug. 23, 1921.

Application filed January 26, 1921. Serial No. 440,094.

To all whom it may concern:

Be it known that I, ROWLAND VILLAGE, a subject of theKing of England, residing at 76 Banner Cross road, Ecclesall, Sheffield, England, have invented certain new and useful Improvements in or Relating to Molds for Ingots and other Heavy Steel Castings, of which the following is a specification, reference being had therein to the accompanying drawing.

This invention relates to molds for ingots and other heavy steel castings, its object being to provide for them an improved construction of feeder-head of the type comprising an annular fire-place around a central feed opening which has been. used with or without a blow pipe-action to apply additional heat to the metal at the top of the mold during and after casting for. the purpose of keeping it liquid while the main body of the metal solidifies in order to reduce the size of the cavity or pipe at the upper end of the ingot or casting. According to the present invention a detachable at the bottom, in order to' assist in radiating in place on an ingot mold;

annular fireplace is provided with inner walls, to extend the mold feed opening, which are made removable with the fireplace and are formed with undercut projectionsto secure a renewable refractory lining inside the feed opening. The oint between these inner walls and the mold may either be protected with refractory cement or may be formed by an. annular fire-brick engaging the mold feed opening in a similar manner to that of the usual feeder tubes and also engaging the feeder head or fire-place,--being secured to the latter in. sections by engaging projections and recesses and by refractory cement.

The inner walls of the fire-place or feeder head according to the present inventlonare also preferably so disposed that'the central feed opening is of less area at the top than and reflecting heat down to the metal at the top of the moldand-to facilitate removal of theffeeder-head from the solidified metal.

In the accbmpanying drawings Figure 1; is a'central section and s Fig. 2 is a plan of a feeder head according tothe present invention. f

Fig. 3 is an elevation of the f der-head Like reference figures indicate like parts throughout'the drawin A 'feeder-head according to the present infeeder head is in position. The walls 1 are inclined as shown in order that the central 7.

opening may be of less area at the top than at the bottom where it joins the mold feed opening, in order to assist in radiating and reflecting heat down to the metal at the top of the mold and to facilitate removal of the feeder-head from the solified metal. The outer walls 2 of the annular fire-place are provided with openings 3 supplying a proportion 'ofthe air required for combustion to the fuel in the annular space 4 between the walls 1 and 2.

The base of the fire-place is comprised by fire-bars 5 which are preferably renewable. In the construction illustrated the inner integral with or sewalls 1 comprise a four sided truncated pyramid while the outer wall 2 is in the form of a cylinder, the fire-bars 5 being made in four detachable sections which may easily be lifted out of the fire-place between arms therein. The cover plate would be made with one or more apertures for the exit of the products of combustion. Anjannularfire-brick 7 is secured to the wider part of the central opening so as to project out therefrom and form a flange 8 to engage thev mold feed opening or a recess around it. Preferably this fire-brick 7 is made in sections and 1s secured in place by projections 9 on the feeder-head, engaging recesses in the brick sections, a refractory eement or the. like being'used to form a joint between the ends of the brick sections. The

.flange 8 formed by the projecting fire-brick 7 fits the'mold feed openingor into a recess around it and is designed to come into sufliciently close. contact with the mold to provide-a seal between the mold and the feedemhead, thus preventing the escape of; molten metal between feeder-head and mold.

The remainder of the central opening is provided with undercut projections or the like on the inner walls 1 to hold in place a renewable refractory lining 11 which is applied in a plastic condition. A plastic mix--.

ture of fire-clay, graphite and ganister is conveniently used both to provide the lining and as a cement for the sections of the fire-brick.

If desired the sectional fire-brick 7 may be omitted, the joint between the feeder-head and the mold being protected by refractory cement or the like applied after the feederhead has been placed in position.

clearing the fire by a poker or the like.-

If desired air or gasunder pressure may be supplied to the space 13 throu h one of its openings 14 in the outer side 0 the feederhead. In this case the other openings would preferably be closed, and when a cover plate is used the aperture therein would preferably be arranged as far as possible from the opening through which the. air or gas under pressure is applied. Holes 15 are preferably provided in the ends of the arms 6- for the insertion of pins or the like by means of which the feederhead may be lifted, removed from the mold when the metal has solidified and be replaced on another mold ready for another cast after the lining 11 has been renewed if necessary. The top of the mold is preferably heated before the steel is cast and maintained hot until, during and after casting by the feederhead hereinbefore described. In this way ingots and other heavy steel castings may be made practically free from pipe whether the main feed of the mold is from the top or from the bottom with a minimum of extra labor and time.

What I claim is 1. The combination with a mold for ingots and other heavy castings of a feeder head in the form of a detachable annular fire-place whose inner walls to extend the mold feed opening are integral with the fire-place, and are formed with undercut projections securing a renewable refractory lining inside the central opening of the feeder head, substantially as specified.

2. The combination with a mold for ingots and other heavy castings of a feeder head in the form of a detachable annular fire-place whose inner walls to extend the mold feed opening are integral with the fire-place and are formed with undercut projections securing a renewable refractory lining inside the central opening of the feeder-head and an annular fire-brick engaging both the feeder- -head and the mold feed opening and secured to the feeder head in sections by engaging projections and recesses and by refractory cement substantially as specified.

3. The combination with a mold for ingots and other heavy castings of a feeder head in the form of a detachable annular fireplace whose inner walls to extend the mold feed opening are integral with the fire-place and are formed with undercut projections securing a renewable refractory lining inside the central opening of the feeder-head which is of less area at the top than at the bottom and an annular fire-brick engaging both the feeder-head and the mold feed opening and secured to the feeder-head in sections by enfractory cement, substantially as specified.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

ROWLAND VILLAGE. Witnesses:

ARTHUR H. GREENWOOD, HAWTHORN WRIGHT.

gaging projections and recesses and by re-

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