CA1161662A - Sampler for molten metal and method with respect to a component thereof - Google Patents

Abstract

ABSTRACT
The invention involves providing a device for sampling molten material which, among other things, comprises a pair of mating sections, each of which pref-erably has a rear recessed head and a front tubular formation, which when assembled provide a chamber and a pair of juxtaposed tubular formations which are adapted to respectively accommodate a pair of tubes, of which one or both may be utilized to receive such a material for flow into the chamber. The invention also involves providing different forms of tubes and a method for making one of these tubes.

Description

:

This invention relates to a device for sampling molten material.
Appreciable developm nt has bePn conducted with respect to providing;-various forms of devices for obtaining samples of molten material. Certain of these devices includej among other things, a pair of mating sections, each having a rear recessed head and a reduced ; front channel. These sections when assembled prov:ide a chamber and a tubular formation in which a tubular inlet is secured for receiving molten material for flow into ... .
the chamber to obtain a sample.
One of the principal advantages of the present in-; vention is to provide improvements over ~he structure des-cribed above and which preferably primarily involves pro-viding each of the sections with a recessed head~and atubular formation, as distinguished from providing re-cessed heads and channels, the latter of which in combinat-ion provide a tubular formation.
Therefore, the present invention provides for a device for obtaining a sample of molten material compris-ing an outer elongated structure having a rear extremity for attachment to a lance and a front tubular extremity, a pair of mating sections~each of which has an enlarged recess and a tubular formation, said sections being posit-ioned together in a casing in said front extremity wherebysaid recesses provide a chamber for receiving such a mat-erial, and a pair of tubular means having inner extremities respec~ively secured~in said tubula~ formations and hav-ing outer ends for receiving such molten material for ~ ~ .

~.

-la-flow into said chamber.
One feature of an embodim~nt of the invetnion li~s in the provision of an elongated structure having a rear extremity or means for detachab:Le connection w~th 5 a lance and a front tubular extremit~ having a partition therein for engagement by the tubular ~Eormations of the d sections, and a mass of cement disposed in the front extremity against the partition and about ~he tubes for n firmly securing the tubes in place. Another feature in-10 cLudes the provision of abutment means in the structure in longitudinal spaced relation to the partititon for .

6~

holding the sections therebetween. The cross-sectional dimensions of the heads of the sections and cross-di-mensions of the elongated structure are pre~erablv such that the structure serves to hold ~he sections assembled and within the confines of the structure. In other words, the sections constituting a sub-assembly are press-fitted into the structure. The tubes may be of corresponding or unequal lengths so that if so desired, the shorter tube can be embedded in cement, in which event, the molten material will first flow in-to the longer tube and then into the shorter one via the chamber, or if of corresponding Iengths the material will flow through both tubes into the chamber. Caps or closures may be provided for the tubes, the caps having inner portions which may or may not be embedded in the mass of cement in the front tubular extremity of the structure so that when at least one o~ the caps is melted, a ~orwarclly extending portion of a tube initially closed thereby, some of the molten material will flow through the tube into the chamber formed by the heads of the mold sections.
Referring to the drawings: `
FIGURE 1 is a pictorial view showing the use of a sampler device in obtaining a sample of molten material from a vessel containing such a material:
FIGURE 2 is a horizontal section taken through the front or fore extremity of structure for obtaining a sample of molten material;
FIGURE 3 is a vertical section of the struc-ture-~hown in FIGURE 2;
FIGURE 4 is a transverse vertical section taken substantially on line 4-4 of FIGURE 3;
FIGURE 5 is a vertical section taken on line 5 5 o~ FIGURE 3;
FIGURE 6 is a side elevational view of a sub-3S assembly for use with the structure of FIGURES 2 through 5;
FIGURE 7 is a par-tial sectional view of a modified device related to FIGURE 6;

z ~ IGURES ~ and 1~ are partial sections o~ modi-fied subassemb.lies for use ~ith the structure of FIGURES

2 and 3;
FIGURE 11 is a pictorial view showing a modi-fied device of FIGURE 12 being utilized to obtain a samplefrom a stream of molten material;
FIGURE 13 is a pictorial view of a tubular means which is usable with the device of FIGURE 12;
FIGURE 14 is a pictorial view of a tubular means proYided with.a fi.tting whereby to facilitate entry of molten material into the tubular means;
FIGURE 15 is a pictorial view of a modified tubular means having different internal cross-dimensions;
~ IGURE 16 is a horizontal section taken through ~ 15 FIGU~E 15 showing a material conditioning element dis-; posed in the tubular means;
FI~URE 17 is a pictorial view of a modified tubular means co:mprised of a pair oE axially aligned mem-bers or tub.es having different internal cross-dimensions and means for holding the members assembled;
; FIGURE 18 is a longitudinal section taken on FIGURE 17 showing a material conditioning element posi-tioned in the tubular means;
FIGURE 19 is a horizontal view of a modified tubular means comprising a pair of members having dif-ferent internal cross-dimensions in which. the one adapted for initially receiving a sample has a smaller internal cross-dimension; and FIGURE 2~ discloses that th.e structure of FIGURE 1~ may b.e re~ersed for use~
Referring first to FIGURE 1 there is shown a sampler structure or device generally designated 1 im-: mersed in a mass of molten material 2 in a vessel 3. A
lance.4 is detachably connected to the device for mani-pulating the latter~
The structure disclosed in FIGURES 2 through 6 will now be descri~ed. This structure comprises an elonga-ted outer housing designated 5 and an inner device or _ 4 ~ 6~Z
assembly generally designated 6 which.serves to obtain a sample or samples from a supply of molten material.
More particularly, the housing 5 is preferably constructed from a suitable cellulosic material, such as pasteboard, and comprises a pair of para:Llel planar wide walls 7 and a pair of narrower parallel walls 8 to define a tubular multi-sided structure of rectangular cross-section. This housing has a rear extremity or means which serves to detachably accommodate an end of the lance 4 as shown in FIGURES 3 and ~, and a front extremity in which the devlce or subassembly 6 for obtaining a sample is secured. The device 6 is preferabl~ secured in a tubu-lar casin~ generally designated 10, also of pasteboard.
This casing has side walls 11, and upper and lower walls 12 and 13.
The rear extremity may be designed and con-structed in any manner desired but is prefe.rably provided with a pair of internal channel members 14 and 15 as shown in FIGURE 4. The member 14 is somewhat larger than the member 15 and has a top wall 16 and a pair of side walls 17 which engage the side walls 11 and lower wall 13 of the casiny 10.
The channel member 15 has a bottom wall 18 en-gaging the top wall 16 of the member 14, and side walls lq engaging the side ~alls 11 and upper wall 12 of the casing. The channel 14 helow the upper channel forms in combination with the casing a tubular formatlon 20 which serves as a vent for the device and the upper channel 15 in comb.ination with the casing serves to provide a tubu-lar formation 21 for s.lidably detachably accommodating thelance 4. The channel members 14 and 15 are also prefer~
ably constructed of a cellulosic material and multi-sided and the cross-sectional dimensions of these com-ponents are such that the components can be readily slida~ly engaged to the positions desired and then prefer-ably secured in place by adhesives C to pxovide a stable fabricated structure. Although the casing 10 is prefer-ably secured in the outer housing and the channel members in the casing by cement it is to be understood that they can be secured in an assembled relation by staples of which one designated 22 of a pair is shown in FIGURE 3 which serve as abutment means. If stap:Les are not used~
then the heads of the sections may be caused to engage one or both of the channels 14 and 15, so the latter will serve as abutment means.
The device 6 primarily comprises a pair of mating sect;ons 23 and 24 and each includes a head 25 having a recess 26 and a reduced tubular formation 27 having a longitudinal opening 28 therein. When the sec-tions are correctly assembled so that mating.notches and projections on the sections are in-terengaged, the recesses 26 cooperate to provide a chamber for receiving a sample of the molten material. The opening in the section 23 serves to receive an inner extremity of a relatively long tubular means; tube or inlet 29 so that an ou-ter extremity extends forwardly of the formation 2~. A disinteyratable or melta~le closure or cap 30 is preferably press-fitted onto the tub.e for normally closing it. A tube 31 of a length less than the tube 29 is secured in the tubular formation of the section 24 and carries a closure or cap ; 32.
It should be noted that the front end of the ! 25 casing lQ is inset a predetermined distance inwardly from the front marginal end edge of the outer housi.ng 5.
A partition 33 is disposed against the casing 10 and pro-; vided with a pair of holes 3~ through which the tubular : inlets 29 and 31 extend. The area in front of the par-titiOII 33 is preferably filled with a mass of insulation or cement 35 for surrounding or imbedding the shorter tube 31 and cap 32 thereon and surrounding the major por-tion of the larger tube 29 so that only a small port.ion extends beyond the free end of the mass for supporting the cap 30. This cement serves to protect the front extremity of the device and assists in holding the mating mold sections in the casing 10 and the parti.tion 33 rela-- 6 ~ ~2 tive -thereto. Only a mlnimum ~uantity of cement is re-quixed for the aforesaid purposes and it is preferably formed to ex-tend forwardly to some extent as shown in FIGURES 2 an~ 3 to provide a protruding or nose-like formation. The sec-tions 23 and 24 constitute a sub-assembly as depicted in FIGURE 6, which can include the tubes and/or the casing 10.
A modified s:ubassembly generally desi~nated 50 is illus.trated in FIGURE 7 and substantially corresponds to the subassembly described above except that a tube 51 extends forwardl~ a greater distance than the tube 29 to receive a cap 52 which is not held by a mass of cement 53.
A modified subassembly generally designated 60 is illustrated in FIGURE 8 for use in FIGURE 9. This subassembly substantially corresponds to the subassembly of FIGURE 6 or 7 and includes a pair o~ tubes 61 o~
substantiall~ corresponding lengths which have caps or closures 62 s.ecured thereto :Eor at least partial em-bedment in a mass of cement 63 as shown in FIGURE 9.
A modified subassembly 70 is depicted in FIG-URE 10 and substantially corresponds to FIGURE 9, ex-cept that a pair of tubes 71 are of a length.greater than the tubes 61 and extend forwardly of a mass of cement 72 and support caps 73 which are detachable from the tubes 71.
When the structure of FIGURES 2 through 6 is utilized as intended, molten material will disintegrate or melt the cap 30 and flow into the chamber 26 through the tube 29 and then into the tube 31 to obtain sample portions conforming to the shape of the chamber 26 and 30 tubes 29 and 31. If found desirable the cap 32 may be omitted, in which event, the mass of cement 35 will serve as a stop for molten material after flowing into the tube 31.
As to the structure depicted in FIGURES 9 and 10 it should b.e apparent that when at least portions of the caps melt or disintegrate, molten material will simultaneously flow into the chamber through a pair of tuhes.

~6~LSi~2 FIGURE 11 depicts a modi~ied structure or de-vice genera]ly designated 80 for use in obtaining a sample of molten material ~rom a stream 81 thereo~, structural details of the device being ~enerally illustrated in FIG-URE 12. A lance 82 is detachably connectible to the de-vice for manipulating it into and from the stream.
The structure of FIGURE 12, preferably com-prises an elongated tubular housing 83 provided with in-ternal structure forming a pair of tubular formations 84 and 85 of which 84 is preferably utilized to accommodate the lance 82. A fore extremity of the housing is pro-vided with an opening 86 in a side wall 87 thereof and a subassembly or device generally designated 88 is secured in the opening to locate it substantially transverse to the longitudinal axis of the housing.
The device 88 includes a casing 8~ and a pair of mating sections are disposed in this casing and form a chamber 90 for receiving a sample of molten material which is adapted for inflow through a tubular means or tube 91.
The sections are preferably held in the casing by a mass of cement or insulating material 92 which substantially surrounds reduced portions of the sections and additional cement 92' fills a void at the fore end of the housing 87 for the purposes o~ protection and stabiliæation. ~he tube 91 extends forwardly of the cement and a cap or closure q3 is preferably attached to the free end oE the tuhe for the purpose of initially preventing the inflow of slag or foreign matter if the device is utilized for obtaining a sample from a mass in a vessel as depicted in FIGURE 1 or if used according to FIGURE 11 to obtain a sample fro~ the stream 81 a tube such as 94 shown in FIGURE 13 is preferably employed.
. It is to be understood that the use of all of the structures or devices shown and described above can be utilized to obtain samples of molten material from any supply thereof, whether from a vessel or stream and that they are modifiable because their use depends on some 3Z ;.

1 measure on the character and liquidity of the material to ~e sampled. ~ther~ise expressed, the deYices are de-signed and constructed for maximum versa~ility or con-vert;bility. !
FIGURES 13 t~rough l9 sho~ different tu~ular means or tubes constructed of a non-metallic material, suc~ as PYREX ~RTM) or ~uartz, for use in different sampling devices, including those described a~ove.
F~GU~E 13 discloses the tu~e 94 usa~le with the structure of FIGURE 11. It has a curved entrance 95 whereby to facilitate entry og molten material into the tube, as distinguished ~rom a bevelled entrance.
FIGURE 14 shows a tube 96 pro~ided with a sleeve 1 90 which can be readily slipped onto the ~ore end of the tube whereby to facilitate entry of material through a curved or scalloped entrance 98. This sleeve is prefer-ably of a split cylindrical character so that it is resiliently flexi~le for clamping onto the tube. The sleeve also serYes to pr~tect the fore end of the tube.
It should be noted that the sleeve is preferably located so that the fore end of the tube is positioned a pre-determined distance inwardly from the fore end of the sleeye so as to promote the inflo~ of material into the tube.
ii 25 FIGURES 15 and 16 disclose a tube 99 ha~ing a substantially uniform outside diameter, a pair of axially ,~ aligned cylindrical openings or passages 100 and 101 of different internal diameters or cross-dimensions. Due to the difference in these internal diameters a shoulder or a~tment is formed to provide an annular seat 102 for a -~ cond;tioning means, preferably in the form of a disc lQ3 o~ aluminum for deoxidizing the molten material as it flows into the passage 100 from the larger passage 99.
The openings or passages 100 and 101 are preferably formed by ~oring them in the tube and this is considered to con-stitute a meritorious advance in the art.
FIGURES 17 and 18 show a pair o~ tubes 104 and - i .

6~2 g 105 ha~ing corresponding outside diameters. The tube 105 which initially receives the molten material has a larger inside diameter or cross-dimension than the inside dia-meter of the opening or passage in tube 10~. These tubes can be assembled as desired in an end--to-end relation, with a conditioning means 106 therebetween, such as that .
used in the tube of FIGURE 16. The differences in the in-ternal diameters allows placement of the conditioning means 106 so that a portion thereof ;s located in the 10 tube 105 and against an inner end of the tube 10~ and a por-tion is located in the latter. These tubes may be as-sembled together in end-to-end axial relationship by ~ means preferably in the form of a piece of adhesive wrap-; ping material 107.
The tub.e assembly shown in FIGURE 19 preferably comprises a pair of tubes 108 and 109 which are preferably held together in an axial relationship by means, such as a piece of adhesive tape 110. rrhe tube 109 has an inter-nal passage 111 which has a cross-dimension or diameter 20 less than that of a passage 112 in the tube 108. In some devices the assembly of FIGURE 19 is utilized so tha-t the molten material will first flow through the smaller pas-: sage and then into the larger passage 112 or if so de-sired the position of the assembly can be reversed as depicted in FIGURE 20 so that the material will succes-sively flow through passages 112 and 111, such utiliza-.~ tion being dependent on the character of the molten ma-terial to be sampled, the source or supply from which the sample is obtained, and the li~uidity of the material.
It is to be understood that if found desirable, the positi.on of the structures of FIGURES 15 and 16 and 17 and 18 may also be reYersed in a manner correspond-; ing to FIGURES 19 and 20. It should also be obvious that in some instances the use of conditioning means such 35 as identified as 103 and 106 respectively shown in FIG-URES 16 and 18 may be eliminated.
It is to be further understood that the various tube structures or assemblies exemplified in FIGURES 15 6~ ~

through 20 are of such a character that they can ~e utiliz-ed in lieu of the tubes illustrated in FIGURES 2, 6, 8, 10, 11 and 12, depending at least on certain of the factors just alluded to and that the lengths of the tubes may be modified to suit different requirements.

Claims (23)

The embodiments of the invention in which an exclusive property or privilege is claimed are defined as follows:

1. A device for obtaining a sample of molten material comprising an outer elongated structure having a rear extremity for attachment to a lance and a front tubular extremity, a pair of mating sections each of which has an enlarged recess and a tubular formation, said sections being positioned together in a casing in said front extremity whereby said recesses provide a chamber for receiving such a material, and a pair of tubular means having inner extremities respectively se-cured in said tubular formations and having outer ends for receiving such molten material for flow into said chamber.

2. The device defined in claim 1, including a partition disposed in said front extremity, said tubular formations engage said partition, said tubular means ex-tend forwardly of said partition, and a mass of cement is disposed in said front extremity and substantially surrounds said means.

3. The device defined in claim 1, in which said elongated structure and said casing are of a multisided character.

4. The device defined in claim 1, wherein said pair of tubular means are of different lengths.

5. The device defined in claim 1, wherein said outer ends include meltable caps for normally closing said ends.

6. The device defined in claim 5, wherein a mass of cement is disposed in said front extremity and substantially surrounds said tubular means.

7. The device defined in claim 1, wherein each of said mating sections includes a solid mold section having a recessed head and a reduced tubular formation, said mold section being cooperable with a mating section whereby the recess forms a chamber.

8. The device defined in claim 1, wherein said outer elongated structure comprises in combination, an elongated tubular outer housing and said front tubular extremity comprises an elongated tubular inner casing se-cured in said outer housing, and at least one of said mating sections has an extension, and including a partit-ion in said outer housing, tubular means extending through said partition and secured in said extension so a molten material may be caused to flow into said chamber, and a mass of cement is disposed in said housing against said partition and substantially surrounds said tubular means.

9. The device defined in claim 1, including means whereby one of said tubular means may be utilized to re-ceive such a material for flow into the other tubular means via said chamber.

10. The device defined in claim 1, wherein wall struc-ture forms said chamber and said tubular means comprise a pair of non-metallic tubular members having inner extre-mities secured to said wall structure and also having outer extremities, a pair of disintegratable elements respectively is secured to said outer extremities for normally closing said tubular members until disintegrated by such a material whereby to permit its flow through both members into said chamber.

11. The device defined in claim 10, wherein means is disposed about said tubes for holding them in an end to end relationship to provide a passage through which such a material may be caused to flow into such a device.

12. The device defined in claim 10, wherein one of said non-metallic tubes has a greater internal cross-di-mension than the internal cross-dimension of the other, and adhesive tape means is securing said tubes together in axial alignment.

13. The device defined in claim 10, wherein each of said tubes of non-metallic material has a rear extremity which has a relatively small internal cross-dimension and a for initially receiving such a material for flow through said rear extremity.

14. The device defined in claim 13, wherein the tubes include means interposed between said extremities for conditioning the material as it flows through said tube.

15. The device defined in claim 11, in which said disposed means is comprised of a sheet material wrapped at least about inner ends of the tubes.

16. The device defined in claim 11, in which said tubes have different internal cross-dimensions.

17. The device defined in claim 11, including meltable means interposed between said tubes for condit-ioning such a material when it flows through the passage.

18. The device defined in claim 11, in which one tube has a larger internal cross-dimension than an internal cross-dimension of the other for initially receiving such a material for flow into the other.

19. The device defined in claim 11, in which one tube has a smaller internal cross-dimension than the inter-nal cross-dimension of the other for initially receiving such a material for flow into the other.

20. The device as defined in claim 8, wherein said elongated tubular inner casing comprises an elongated tube for use as a component of a device for obtaining a sample of molten material, and a sleeve carried by a fore extrem-ity of said tube and having a curved entrance extending a predetermined distance forwardly of said extremity thereof to facilitate entry of such a material into the tube.

21. The device as defined in claim 8, wherein said elongated tubular inner casing comprises an elongated mem-ber having a resiliently flexible generally tubular extre-mity for accommodating a fore end of tubular means of a device for obtaining a sample of molten material and an opposite extremity having an enlarged entrance to fac-ilitate entry of such a material.

22. A method of modifying an elongated non-metallic member having an opening extending therethrough for use as a component in the device defined in claim 1 for ob-taining a sample of molten material, said method compris-ing enlarging the opening at one extremity of said member to provide an entrance for initially receiving such a material for flow through said member.

23. The method defined in claim 22, in which said enlarged opening provides a seat, and inserting means into said entrance for disposition on said seat for condition-ing such a material when caused to flow through said member.