US2097637A - Wall subjected to high temperatures - Google Patents

Description

Nov. 2, 1937. ASOL|N 2,097,631

WALL SUBJECTED TO HIGH TEMPERATURES Filed Nov. 13, `1936 2 Sheets-Sheet 2 35 with its walls completely solid. Inservice, it ls Patented Nov.

f sl'llailne'frs'llT0 man.

I .'raurns'ruaas vThis invention relates to metal examples of such walls. Oneof the objects is to construct a wall that will not easily crack `or break when subjected to high temperatures.

Various examples of the invention are illustrated by the accompanying drawings, in which:

Figure 1 is a partial top view' of a slag ladle embodying the features of the invention. vFinire 2 is a sectioned elevation of this ladle.

Figures 3 and 4' are sections taken respectively from the line III-III and IV-IV in Figure 2'. s

Figure 5 isa partial view of the outside of the ladle taken from the line V-V in Figure 2.

Figure 6 is a partial view of the topl of a slag vladle 'cover employing theieatures of the lnvention.

Figure '7 is a cross-section VII-VII in Figure 6. p s

`Figure 8 is a pai-tial top view of a slag ladle cover embodying a modification ofthe principles shown by Figures 6 and 7; k I l Figure 9 isla cross-sectiontaxen from the line IXIXinFlgure8..` 1 i `The blast-furnace slag. ladle constituting the nrst example of the invention has a solidvmetal bottom l and a sidewall 2 that is provided with a` series oi' lengthwiseextendingslots 3. Each ot Y of suitable shape, which these slots is lilled with a plurality of parallel metal srips I. These strips extend edgewisedly towardthe inside ofthe ladle, their rear edges being xed to the wall 2 by welding metal deposited through openings 5 formed in this wall `at the bottoms of the recesses 3;

A blast-fumace slag ladle is ordinarilya made subjected to heavy stresses resulting from its `tendency vto warp undertheeiiects of thema] exi vtoward breakage. In the case of the disclosed pansion and contraction. Due to the fact that its walls are solid and rigid, pieces oiten break out. leaving holes which must be repaired. 4The ladle disclosed above is not so subject to -this trouble.

Its bottom I is solid because its shape is such as to enable it to withstand stresses encounteredin service, it being understood that it is usually the side wailoi'a ladle that is particularly inclined ladle, this side wall is composed primarilyjoi' metal strips orv laminations, which are anchored only at their rear edges whereby they are capable of moving individually to at least some extent and tothus individually accommodate expansive and contractive eilects. Due to the fact that each' strip contracts and expands as an individual unit,

taken from the line" .to iill the circular area deiined by this ring 9'.

' ring Il shown is the same as the ring 'neither single' stresses nor stress concentrations can build up to values suiiiciently llarge tov cause the strips to tear from their proper positions. While retaining the strength of a solid wall the side wall of the disclosed ladle is suiiiciently iiexg ible to prevent its being damagedin service.

` A second example of the invention is the cover for` a metal ladle. This covercomprises a relatively thin wall I of suitable shape. A plurality ot metal strips lk are iixed to the high temper' m atured side of this wall so `as to extend edgewisedly toward the high temperature. this being .done by the deposition of welding metal through openings t formed in the `wall 6, so as to unite the edges of the strips l remote from the high tem- `perature. A depending tapering ring 9.is` welded around the outside of the group of laminations provided by the strips I so as to render the cover more serviceable. It is to be understood that the strips 1 are cut in such lengths as to permit them 20 This ladle coverpossesses 'the same advantages as are possessed by the previously described slag ladle. That is to say, the metallic wall that must lresist high temperatures is composed primarily of 25 a-number of small pieces of metal, none of which are of suilicient size to result in breaking stresses being produced upon temperature variations.

The modified ladle cover consists in a. wall I0 mounts a single metal 30 strip II arranged in the form of a coil. Bars I2 may bewelded transversely tothe coil of strip and their opposite sides then welded to the wall I Il by thedeposition of welding metal through holes I3 in this wall, which register with the bars. The 35 Sand accomplishes the same purpose. This modification is further characterized in that metal sheets I5 are loosely laid on top of the edge of the coil of metal strip II,and insulating material I6 is placed 40 in the space between the wall Ill and these'sheets Il; the latter retainingthis material in place.

s Although dat striphas been illustrated as comprising the pieces of metal, it is to be understood that relatively thin pieces of any shape may be 45 used, these being'V arranged to extend edgewisedly` toward the high temperature side of the wall. The fundamental idea is the use4 of a number of relatively thin pieces which extend edgewisedly from the high temperature side of the wall and .5

`which are individually so Weak that even when they tend to warp due to. temperature changes they do not possess suilicient strength to tear themselves loose. i t

' perature side of v move individually when I claim:

l. A wall subjected to high temperatures, that is characterized by including a. plurality of relatively thin metal pieces arranged with their edges toward the high temperature and provided with mounting means permitting their' individual movement to at least some degree.

2. A wall subjected to high temperatures, that is characterized by including a supporting wall and a. plurality of kadjacent relatively thinmei'al pieces extending edgewisedly from the high temporting wall at their edges remote from the high temperature but being otherwise free-to contractive and expansive eiects.`

3. A wall subjected to high temperatures, that is characterized by including a supporting wallv and a pluralityv of adjacent relatively thin metal pieces extending edgewisedly from the high temsaid wall toward the high tem-` perature, said pieces being connected to said sup subjected to thermal Sfree for at least limited individual movement .upon thermal expansion and contraction of the same.

' 5. A wall subjected to high temperatures, that is'characterized lby including a supporting wall and a coil of metal strip iixed to the high temperature side of said wail by its edge` ALFRED OSOLIN.

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