1,472,200 E. WALTON INGOT AND LIKE MOLD Filed April 24. 1922 2 Sheets-Sheet 1 Fig.1.
I v E 1 E a, 0
Oct. 30, 1923. 1,472,200
' E. WALTON INGOT AND LIKE MOLD Filed Aprii 24. 1.922 2 Sheets-Sheet 2 III have invented new 10 ing and a Patented Oct, 30, 1923. r V
ERNEST nt at sa naaiaaeem a ili bt KE MFiI Application fiied fApiii g4, r9 22; Serial ra. stares: A
- To aZZ whom it may concern.
Be it known that I, ERNEST WALTON, a subject of the King of En land, residing at Sheffield, in the countyo York, England,
and useful Improvements in Ingot and like Molds, of which'the following is a specification. e i
This invention relates to ingot and like molds of the kind comprising" an outer 'cas separate inner lining'its object bemg to provide improved meansfor combining an integral lining with the casing by the employment of whichan efiicient anduniform thermal conductivity between the-two is obtained and the lining may be renewed without risk of losing such conductivity in spite of slight variations in size on-shape which are unavoidable in prac-tice'witho'ut machining theparts.
The invention is applicable to, allpermanent or semirpermanentmolds and one-feature consists in providing a comparatively very thin mold of iron, constituting" anlintegral inner lining held by an outer casing in two or more sections, such sections being clamped on the lining so as togobtain the desired thermal conductivity between: .them and the whole outer casing and inner lining constituting the mold for casting purposes.
0 A second feature of the invention consists in providing thermal conducting bonding material between an integral lining and a casing either integral or in sections. After the mold has been used for casting purposes, the inner lining only is scrapped and the outer casing used again, continuously with new inner linings. a a
The innerlining is integral and may be made similar to the ordinary mold in'use,
'like." I Each section the particular shape of ingot.
.may be at an angle of 135 and arranged at the corners of the inner 11nmolds in use, varying with the size ofmold and-shop practice. The thickness of the outer asingimay be increased according to the needs of. the shop. practice.
The inner mold or lining is not of sufiicient thickness to belsuccessfully usedalone, but is supported by the. sections of the: outer casing which sections being in contact with theilining or withthe conducting bonding material between them transmit sufficient of the 1 heat away. from the inner lining to maintain its successful continuous use in practice. a a
The inner lining being thinner than the customary thickness of solid walled molds,
can expand and contract better than the latter and thus the employment of the present invention gives a longer life to the mold. g
The sections of the casing may be each provided with a flange. at each longitudinal edgeiand through each flange, at intervals holes maybe-provided, two or more in numher, for the insertion OfbQlllSfCOttIS, or the is temporarily fastened to-Ithe inner'lining by clamps at the ends, then the sections are connected to each other round the inner lining, by means of bolts, cotters, springs:or the. like, and the whole casing of sections is tightened to grip the inner lining and afterward the clamps are removed. The number of section is best determined by the shape of the ingot, for example, four sections for a rectan ular ingot or eight sections for an octagonal ingot, although a smaller number can be utilized for The flanges to the sections 40 with or without flanges at top or bottom or both, but with the thickness of the-wall considerably reduced in comparisonfwith ordinary molds. The'outer casing maybe M placed together in sections round the inner lining and secured by rings, loops, lugs, cotters, pins or other appliances, with or w th out conducting bonding material between the casing sections and the lining. p
The thickness of the combined-walls of the lining and casing is at least suhstantially' equal to the ordinary thickness of ing' but this can be modified by shaping the sections to place the flanges on the sides of thelining at 90 to the sections bearing The invention is illustrated by way of example in the accompanying drawings in which Figure 1 is a vertical longitudinal section of one form of mold.
Figure 2 is a plan, partly in section, of the above form of mold.
Figure 3 is a side elevation of one of the sections of the casing.
Figure dis a longitudinal section of an- 7 other form of mold.
Figure is a longltudinal section of a further modification.
l may be replaced by a hole throughthe casing with a threaded or unthreaded pin fitting lug D. ateachend with hollowed recess casing together.
' Figure6 is a plan of a further modifica tion.
' In Figure shown the inner integral lining A with a, flanged base P and a recess B into which recess 'B runs a projection G from the casing for instance in four sections. The projection'G into: the recess B. H Each section has aliftin 'The'four sections of the casing, as shown in Figure 2, are connected together by his K whichjare slotted to receive cotters or threadedto receive washers and nuts: F, F,
V are the 'holes'through the flanges H, H, for
the: insertion of the pins or bolts K, K
The outer face of the lining and the inner faces of the sections maybe left in a roughened or 'pittedicondition and also may be curved slightly to increase the efficiency of heat conduction from lining to casing.
I face of .the' casing respectively;
. The-corrugations instead of being trans verse as shown may be longitudinal andmay vary in angle, shape and number. l
The Wall of the lining may vary in thickness the taper causing such variation in thickness only being formed on the outer face of the lining-A and the casing C being made to correspond with this variation in thickness. V
Figure 5 shows a modification in which this variation in thickness of the lining is provided to allow for the variation in temfperatur'e in the cooling down of the ingot."
The sections of the casing may be connected together and clamped to the lining by 7 having tapered bosses on their longitudinal edges each boss having a slot and through these slots are driven cotters to tighten a.
ring placed round each adjacent pair of the bosses, the compression'of the ring on the tapered'bosses tightening the sections'together and on to the inner lining A. V
Figure 6 indicates such tapered bosses A adjacent pair of which is placed a ring C cotters D D being driven through slots B B in the bosses to tighten the rings G on locking the lining and G is the casing and in this stripping purposes may be the bosses and drawing the sections together and on to the inner lining.
Powders such as fine-iron drillings', cements, metallic substances with high thermal conductivity, or similar conducting bonding material may be iisedjbetween the casing and the lining to establish'the best possible contact and thermal conduction between the walls thereof. Such conducting l' bonding material is indicated'at N in Figure 2. 1
.The provision oflugs, shackles and other attachments commonly in use for lifting or.
applied to the improved type of mold construction according to this invention. 1 V This method .ofmold construction is applicable to all. chill molds, for casting ingots and the like, whether the mold is used with the wide end up, bottom, or is made parallel walled.
As the steel or other liquid metal usually wears away only the bottom of the mold or a shallow depth of the inner face of the mold, these parts arereplaced by new inner lining. A V: While I have shown and described particular forms of embodiment of my invention, I am aware that many minor or wide end at the changes therein will readily suggest themmeans for obtaining uniform thermalconductivity between lining and casing comprising between the adjacent faces of the lining and casin substantially as specified.
3. n ingot band like molds the combination of an outer metal casing formed in sections, an integral metal lining, engaging projections and recesses in the casing and lining respectively means for clamping the sections to the lining, and thermal conducting bonding material disposed between the casing and the lining, substantially as specified.
moldsthe combi and like molds the combia. V conducting bonding material 4:. In ingot and like molds the combi- I nationof'an outer metal casing'formed in sections, an integral metal lining-engaging corrugations on the outer surface of the liningand the inner surface of the casing respectively and means for clamping the sections to'the lining in thermal conduction contact therewith, substantially as specified.
5. In ingot and like molds the combination of an outer metal casing formed in sections and integral metal lining, engaging corrugations on the outer surface of the lining and the inner surface of the casing respectively, and means for clamping the sections to the lining with a conducting signature.
ERNEST l/VALTON. Witnesses ARTHUR H. GmnNWooD, HAWTHORN WRIGHT.