US2077927A - Cooling mold - Google Patents

Description

Vpl'il 20, 1937. Y, GLENN 2,077,927

COOLING MOLD Filed July 27, 1955 2 Sheets-Sheet 1 v NMIB? I `E Q J. Y. GLENN COOLING MOLD April 20, 1937.

Filed July 27, 1955 2 Sheets-Sheeti 2 f77-omver Patented Apr. 20, 1937 UNITED STAT- COOLING MOLD Application July 27, 1935, Serial No. 33,489

6 Claims.

This invention relates to improvements in cooled molds and more particularly to improved cooling molds for the casting of ingot.

Molds as previously constructed were cooled by water flowing in at one end and out at the other without any special baffles or other means to direct the flow of the water. As a result of this undirected ow of water the mold was cooled unevenly, some portions being cold, while others, where the water was pocketed, would be extremely hot. This uneven cooling oi the mold not only resulted in poor ingots, but in broken molds with the consequent loss of time and frequently the entire loss of the entire pour of metal.

It is an object of the invention, therefore, to provide a mold in which the flow of water is distributed evenly and positively over the entire cooled area.

It is a further object of the invention to provide a mold in which the thickness of the mold Walls is substantially uniform. Y

It is a still further object of the invention to provide a mold in which the dividing portions between the matrices are directly cooled.

These and other objects will be apparent to one skilled in the art from a study of the following description in conjunction with the accompanying drawings in which:

FigureY 1 is a sectional view of the improved mold 30 taken online I-I of Fig. 2;

Fig. 2 is a plan view of the mold certain parts being broken away to more fully disclose the mold construction and taken on line 2--2 of Fig. 3;

Fig. 3 is a sectional view taken on the line 3 3 35 of Fig, 2 and shows more clearly the spaces for the now of water; and

Fig. 4 is a sectional view similar to Fig. 3 but showing one-half of a modified mold.

The mold is shown as formed of two symmetri- 40 cal halves A fastened together by bolts B with a sealing gasket C between the halves to prevent leakage of cooling fluid. The ends of each half have machined portions D which receive trunnions E and F through which the cooling medium 45 may enter and leave the mold. The trunnions are adapted to rest in standards G, shown diagrammatically in Fig. 1, thereby permitting rotation of the mold as desired.

The halves of the mold are preferably made 50 symmetrical and are so shown, therefore a description of one-half is believed suflicient. Each half of the mold is formed with side portions 2, end portions 4 and outwardly extending reenforcing and attaching flanges 6 which are joined at 55 spaced intervals to the side and end walls by buttress members B as clearly shown. The side Walls have inclined inner walls HJ joined to the top edge of the side walls and spaced from the side walls to provide a space or header I2 at either side of the mold. These inner walls merge with and support the floor or base i3 of the molds which is also joined with the lower portion of the end walls. Spaced converging wall members I4 extend upwardly from the base to their point of junction I', thereby forming a hollow triangular dividing element. The-inner walls Il! have the portions which would normally close these hollow elements removed in order that the hollow i8 may be in direct communication with the spaces l2 as clearly shown in the left hand portion of Fig. 3.

In order to properly support the core to form this portion i3 openings 2li are provided in the base, which openings may be later closed if desired. The inner walls itl, dividing walls lf2 o-r end walls ll, together with portions of the base I3, form the matrices which may be lled through the usual spouts resting on pouring portions 22. In order to strengthen the mold, as well as to form breaking points in the ingots, the projections 24 are provided extending between the walls I4.

The base is provided on the side opposite the matrices with ns 25 which increase the radiat# ing surface as well as strengthen the base. l These ns are of such a length as to substantially meet the iins of the opposite half mold, thus providing channels or passages 28 which are in direct communication with the spaces i2 at each side of the mold. A Y

Semi-circular curved grooves 30 join the diagonally opposite ends of spaces I2 with the finished end portion D. When the two halves are joined together the grooves form a tube for conveying the cooling medium to or from the headers or spaces I2. It will be noted that the position of these grooves is such as to require slight changes in the castings for the mold, but otherwise the halves are similar as previously stated. It will also be noted that when the halves are clamped together that the two spaces I2 combine to form headers at each side, which headers are interconnected by passages I 8 and 28 for the exchange of cooling medium therebetween.

rIn operation, Water or other cooling medium may be fed into one trunnion from which it flows to one header and through the various spaces or passages to the other header and out of this header through the curved tube and other trunnion. It is thus seen that a mold is provided in which the walls of each matrix are substantially of uniform thickness and that each wall is cooled by direct contact with the cooling medium. It is also obvious that the flow of the liquid is directed and conned to definite paths and that pocketing of the liquid cannot occur, thus each matrix is cooled rapidly, and the various matrices are cooled at substantially the same rate.

In the modification shown in Fig. 4 the only change has been the addition of an extra strengthening projection 24 and the use of an additional core opening. These changes are necessary due to the increased width of the mold.

Although the mold form and manner of cooling the matrices has been shown and described with special reference to the drawings, it is apparent that improvements and changes thereof will be obvious to one skilled in the art without departing from the scope of the appended claims.

What is claimed is:

l. A cooling mold `adapted to receive a cooling medium comprising, headers formed by outer and inner walls, end walls, a base portion connecting said inner walls and end walls to form a substantially pan-shaped portion, dividing members rising from said base and joined to said inner walls to thereby form matrices, ns on said base forming passages, and additional passages within the dividing members, said passages connecting the headers and being adapted to permit a positive and directed flow of cooling medium between the headers whereby at least four walls of each matrix are directly and substantially equally cooled by said medium.

2. A cooling mold adapted to receive a cooling medium and formed of a pair of members secured together, each member comprising, spaced outer and inner side walls forming headers, end walls, a base joining said inner and end walls to form a substantially pan-shaped portion, hollow dividing members rising from said base and joined to said inner walls to thereby form matrices, fins on each base portion substantially abutting each other and cooperating to form passages between the headers, said passages and hollow dividing members permitting the positive and directed flow of cooling medium between the headers whereby the walls of each matrix are directly and substantially equally cooled by said medium.

3. A cooling mold adapted to receive a cooling medimn and formed of a pair of members secured together, each member comprising, spaced outer and inner side walls forming headers, end walls, a base joining said inner and end walls to form a substantially pan-shaped portion, hollow dividing members rising from said base and joined to said inner walls to thereby form matrices, fins on each base portion cooperating to form passages between the headers, hollow trunnions attached to said end walls, means joining one of said trunnions to one header, means joining the other of said trunnions to the other header, said passages, hollow dividing members, trunnions and means cooperating to permit a directed flow of cooling medium through the mold.

4. A cooling mold adapted to receive a cooling fluid and comprising in part, end walls, headers joining the end walls, a base portion joining said headers and end walls to form a pan-shaped portion, hollow dividing members joining said headers to form matrices, said hollow dividing members being adapted to positively direct the ilow of cooling fluid between the headers whereby at least the side walls of each matrix are directly and equally cooled.

5. A cooling mold adapted to receive a cooling iluid and comprising in part, end walls, headers joining the end walls, a base portion joining said headers and end walls to form a pan-shaped portion, spaced apart fins on said base, hollow dividing members joining said headers to' form matrices, said hollow dividing members and nned base being adapted to direct the flow of cooling iiuid between the headers whereby the walls of all matrices are substantially equally cooled.

6. A cooling mold adapted to receive a cooling medium and formed of apair of substantially identical members secured together, each member comprising, spaced outer and inner side walls forming a pair of spaced apart headers, end walls, a base joining said inner and end walls to form a substantially pan-shaped portion, hollow dividing members rising from said base in substantial parallelism to the end walls and joined to said inner Walls toi thereby form matrices, ns on each base portion extending toward each other and cooperating to form passages between the headers substantially parallel to the end walls, hollow trunnion members attached to said end walls, means joining one of said trunnions to one header, means joining the other of said trunnions to the other header, said iin formed passages, hollow dividing members, trunnions and means cooperating to permit a directed ilow of cooling medium through the mold.

JESSE Y. GLENN.

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