US1544166A - Appliance for the continuous transfer of molten metal - Google Patents

Description

June 30, 1925. 1,544,166

F. B. MCKUNE APPLIANCE FOR THE CONTINUOUS TRANSFER OF MOLTEN METAL Filed Feb. 5 1923' 2 Sheets$heet 1 LJLJLJQLJLJLJLJ g INVENTOR FranKB. 15/ /Izme,

June 30, 1925.

F. B. M KUNE APPLIANCE FOR THE CONTINUOUS TRANSFER OF MOLTEN METAL Filed Feb. 5, 1923 2 Sheets-Sheet 2 INVENTOR fianIBJf /Tzme.

' Patented June 30, 1925.

FRANK BAIRD -MoKUNE, 0F HAMILTON, ONTARIO, CANADA.

APPLIANCE FOR THE oom rnnous IRAN-SEER or MoL'rEn METAL.

Application filed February "3, 1923. Serial No; 616,682.

To all 'whoin it may concern.

,Be it known that I, FRANK B. MoKUNE,

'a citizen of the Dominion of Canada residing at Hamiltomin the Province of ntario h and Dominion of Canada, have invented certain new and useful. Improvements in Appliances for the Continuous Transfer of Molten Metal, of which the'following is a specification.

My invention relates to the art of metallurgy and especially to that branch which has to deal with the pouring of the molten metal into molds. In the art, as usually practiced, the metal is introduced into the molds one after another until the molds are filled, one following the other.

This method results in segregation and piping because of the difiiculty of keeping the 'top'of the metal hot, as the metal, after being poured, skins and chills rapidly. It is well known in'metallurgy that if the top of the metal can be kept hot, piping and segregation can be largely eliminated. Heretofore hot tops of refractory material have been introduced in the attempt to prevent piping and segregation and have helped to keep the top of the metal hot. In other cases, metallurgists have used'a riser or head,- and-while these methods have helped to reduce the piping they have been troublesome and have not proven satisfactory. In other cases, a mold which hasthe big end upwards is used, but this practice interferes withthe stripping of the metal bythe means usually provided for the pur ose.

In my application erial No. 600,942, filed November 14, 1922 I have disclosed an improved method of casting metal and an improved apparatus for carrying out that method and the present invention has for its objectto provide a modification of the apparatus disclosed in my previous application referred to. -My present invention differs from the apparatus disclosed in my previous application in that instead of providing for the pouring of all of the metal from the ladle into a single central mold from which it overflows into successive molds radiating from the central mold, I provide the usual duplex pouring trough by which the metal from the ladle is diverted into two molds and from those it into the series of adjacentmolds.

Again, my present invention has for its object to provide the molds with a collar or .unit cars of molds,

flows successively liner or refractory material around the in,

tenor of the upper end-of the mold where the slot for the transfer spout is provided, t ereby retaining the heat to a larger degree and retarding its dissipation at the mouth of the mold, thus keeping the metal hotter 'as it flows from one mold to the next succeeding mold than, is possible by the construction shown in my previous application. The invention also resides in the particular construction of the liner or collar' making it peculiarly adapted to apparatus for car rying out my method of pouring metal.

In the drawings, in which like numerals of reference indicate like parts in all of the figures,

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Figure 1 's a side elevation of two three one of the series being shown in section. a

igure 2 is an end elevation of the parts shown in Figure 1.

Figure 3 is a detail top plan view showing how the liner collar overlies the edgeof the transfer spout adjacent thereto.

igure 4 is a detail perspective view on an enlarged scale of one of the transfer spouts.

Figures 5 and 6 are detail perspective views of the two halves of the liner collar.

In thedrawings, 1 represents the carrying car on which are the usual removable stools 2-3 that support the molds 4. The construction of the molds 4 essentially, is that of the present day practice. The molds illustrated in the accompanying drawings are those tapering toward the top, i. e., with the small end at the top and the large end at the bottom, although my invention is also applicable to molds having the big end upwards as Well.

The molds are provided with the usual lugs 5 by which they may be gripped by the stripping crane.

As in the embodiment of my invention disclosed in my application before referred to, so also in my present embodimentthe' molds are provided with slots 6 adjacent to their upper ends in which are set transfer spouts 7 which convey the overflowing metal from one mold to the next succe din mold, the spout 7 setting in the slot 6 of the higher mold and resting or projecting over the upper edge of the next lower mold. The construction of the transfer spout 7 may be the same as that disclosed in my previous application and it may be lined with refractory material as there disclosed or it may be asimple cast iron spout without such lining, if desired (see Figure 4).

When the present invention is employed with molds having the small end up (such embodiment being illustrated) the upper end of the mold is recessed as at 10 to receive the liner of refractory material, this liner consisting preferably of two half sections 11 and 12, the latter being provided with a slot 13 to register with the slot 6 of the mold. The area of the slot 13, however, is less than the area of the slot 6 so that the refractory lineror collar section 12 will overlie the adjacent end wall of the transfer spout 7, as shown in Figure 3.

I prefer to make the two sections of the liner or collar 1112 interchangeable and reversible halves so that in the end molds two sections 11 may be employed. The end molds may be made without the slots 6 (see right hand mold in Figure 1 and the nearest mold in Figure 2) or the end molds may be provided with the slot 6 the salne as the other molds so as to make the molds interchangeable. In that event by using two sections 11 of the liner in the end. molds, the slots 6 of the end molds. will be closed by the liner and metal will not pour out of the same.

The transfer spouts 7 are provided with the usual lugs 8 and eyes 9 to which the stripping crane may be connected to lift the transfer spouts out of the way after the metal has been poured.

14; designates the usual duplex pouring trough having two outlets 15 and adapted to rest on the tops of the molds into which the contents of the trough are to be discharged.

The charge of molten metal from the ladle is poured into the trough 14 by which it is distributed through the apertures 15 into the highest two adjacent molds, the metal flowing into the highest molds 44= until the same reaches the level of the transfer spouts, whereupon it flows across the transfer spouts to the next molds filling them in succession and then flowing through the second set of spouts 11 into the third set of molds until they are filled. Of course, the number of molds in the series will be variable and I do not wish it understood that the invention is limited to any specific number or arrangement of the molds.

The essential feature of the present invention is the provision of the refractory liner or collar and in combination with the transfer spout.

I find in practice that it is not necessary to use regular hot top brick material for the refractor liner or collar but the same Inay be made of ordinary clay brick which In the practical development of my present invention I have found that I am able to use the same brick three or four times without any replacement of new material, which napurally cheapens the same very considerab y.

From the foregoing description, taken in connection with the accompanying drawings, it is thought the complete construction and advantages of the invention will be clear to those skilled in the art.

What I claim is:

1. A mold having a slot, a transfer spout set in said slot and a refractory lining collar within that portion of the mold adjacent to said slot.

2. A mold having a slot, 8. transfer spout set in said slot, a refractory lining collar within that portion of the mold adjacent to said slot, said lining collar itself havipg a slot to register with the slot of the mo 3. A mold having a slot in its upper end, a refractory lining collar within the upper end of the mold and extending down beyond the bottom of the mold slot.

4:. A mold having a slot in its upper end, a refractory lining collar within the upper end of the mold and extending down beyond the bottom of the mold slot, said lining collar being made in sections, one of which is slotted to register with the molds ot.

5. A mold having its upper end recessed, a refractory collar in said recess and composed of two reversible and interchangeable sections of substantially uniform. thickness in cross section.

6. A mold having a slot in its upper end,

. a transfer spout set in said slot, a refractory collar within the upper end of the mold, and having a slot to register with the mold slot, the collar slot being of less area than the mold slot to overlie the adjacent end wall of the transfer spout.

7. In combination with two molds and means to sustain one of them higher than the other, of a transfer spout from the higher to the lower mold to take excess meta-l poured into the higher mold and deliver it into the lower mold, of a lining .collar in the upper mold extended to a depth below the bottom of the transfer spout, and a similar lining collar in the lower mold, the lining collar of the upper mold having a slot to register with the entrance to the transfer spout.

8. As a new article of'manufacture, a seca body portion of refractory material hav-- tional liner collar for molds, one of the sections of which has a slot for the purpose described.

9. A mold having a slot, a transfer spout set in said slot, and a refractory lining collar within that portionyof the mold adjacent to said slot, said mold having a recess to receive said collar.

10. A hot top for ingot molds, comprising a body portion having a discharge opening below the upper end.

11. A hot top for ingot molds comprising a body of refractory material and having a discharge opening adjacent its upper end.

12. A hot top for ingot molds comprising ing a discharge opening above its lower end. I

13. A hot top for multiple casting of metal ingots comprising a body portion of refractory material adapted to e supported Within the mold and having a cut out 'portion below the upper end of the mold to function with a cut out portion in the upper end of the ingot mold.

14:. A hot top for multiple casting of metal ingots, comprising a body portion of refractory material adapted to be supported within the mold and having a cut out portion below the top of the mold the feeder being flush with the top of the mold having a cut out portion to function with the out out portion of the feeder.

15. A feeder for multiple casting of metal ingots, comprising a body portion of refractory material adapted to be supported within the mold and having a cut out portion below the top, the feeder being flush with the top of the mold and the mold having a cut out portion to function with the out out portion of the feeder.

- FRANK BAIRD MQKUNE.

dill

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