CA1084667A - Method of manufacturing wearing parts for slide locks and product - Google Patents
Method of manufacturing wearing parts for slide locks and productInfo
- Publication number
- CA1084667A CA1084667A CA282,026A CA282026A CA1084667A CA 1084667 A CA1084667 A CA 1084667A CA 282026 A CA282026 A CA 282026A CA 1084667 A CA1084667 A CA 1084667A
- Authority
- CA
- Canada
- Prior art keywords
- metallic shell
- sleeve
- slide plate
- slide
- discharge
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Landscapes
- Casting Support Devices, Ladles, And Melt Control Thereby (AREA)
Abstract
ABSTRACT OF THE DISCLOSURE
The present invention provides a wearing part for a slide lock for the discharge opening on vats containing molten metals formed of refractory material clad in a metallic shell, said part being made from a fire-resistant refractory concrete poured into the metallic shell and set therein. Such wearing parts include at least one of a slide plate, bottom plate, charge sleeve and discharge sleeve.
The present invention provides a wearing part for a slide lock for the discharge opening on vats containing molten metals formed of refractory material clad in a metallic shell, said part being made from a fire-resistant refractory concrete poured into the metallic shell and set therein. Such wearing parts include at least one of a slide plate, bottom plate, charge sleeve and discharge sleeve.
Description
6~7 The present invention relates to a weariny part for a slide lock for the discharge opening of vats containing molten metals, e.g. slide plate, floor plate, charge sleeve or discharge sleeve; made of a refractory material encased by a metallic shell.
Refractory parts of this kind are known. German L
Unexamined Printed Spec. (DT-OS) 22 27 501, for example, discloses a sliding lock mechanism where the slide plate and the top plate are located in metallic housings and where the flat part of the slide plate which is in contact with the top plate is highly resistant to erosion and fire.
The present invention provides a wearing part of the~
aforementioned type with high dimensional stability and durability, which, while affording the desired tightness and strength, is substantially easier to manufacture, in particular without requiring mortar, than the conventional wearing parts for slide locks. The present invention also provides a method of manufac-turing such wearing parts as well as a slide lock with such wearing parts.
According to the present invention there is provided a wearing part o~ a slide lock for the discharge opening of vats containing molten metals made of a fire-resistant refractory concrete that is poured into the metallic shell designed as a dead form, wherein it sets.
The present invention also provides a slide lock for the discharge openings of vats containing molten metals, with wearing parts which are made of refractory material encased in a metal shell and are disposed in a supporting frame, the wearing parts being made of fire-resis-tant refractory concrete poured into the metallic shell and set therein, and are clamped in the supporting frame.
Unlike the conventional wearing parts, the wearing part ~ 1 - , : . ' .
. : :
346~7 of the present invention is producahle ln a single step, without the use of mortar, with high dimensional stability, by having the desired metallic shell itself serve as the castin~ mould, and thereby a close uni~n between the jacket and the refractory concrete is produced. The refractory wearing parts of the present invention are therefore produced economically and are of high I --quality. Surprisingly such wearing parts meet the high demands ¦~
made on coming into contact with molten metals.
While the aforementioned wearing parts such as slide plate, bottom plate, charge sleeve or discharge sleeve can each be furnished separately with i-ts own metallic jacket as a dead form, as is especially desirable when providing for alternating-discharge, it is also possible to pour the slide plate and discharge sleeve and/or bottom plate and charge sleeve commonly in a one-piece metallic shell as a dead form. Especially in the case of wearing part with a passage bore, such as a slide plate, it is desirable to pour a sleeve, e.g. a wearing sleeve, surrounding the passage bore, in the refractory concrete at the same time.
In this way the manufacturing process can be simplified, because the passage sleeve remains in the wearing part as part of said form. Since the wearing part, made up of different materials, ~
i.e. metal and refractory material, is exposed to high thermal ~ ;
stresses, it is desirable for the refractory concrete of the -., . ..
wearing part to be that disclosed in German Unexamined Printed Spec. (DT-OS) 26 24 299.
The present invention further provides a method of producing a wearing part of a slide lock for the discharge opening of vats containing molten metals, e.g. slide plate, bottom plate, charge sleeve, discharge sleeve, consisting of a refxactory material encased in a metallic shell, in which method the refractory concrete is poured into the metallic shell designed as a dead form, and is allowed to set therein. At the same time '~
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slide plates and discharge sleeve and /or bottom plate and charge sleeve can be poured in a one-piece metallic shell as a dead form. In a particular embodiment of the process, when pouring the refractory concrete in the metallic shell, a sleeve surrounding the passage bore, e.g. a wearing sleevej is also poured.
A slide lock for the discharge opening of vats contain-ing molten metal, with wearing parts, e.g. slide plate, bottom plate, charge sleeve or dlscharge sleeve, which comprise refractory material encased in a metallic shell and are disposed in a supporting frame, is characterized, in accordance with the present invention, in that the wearing parts consist of fire-resistant refractory concrete poured and set in the metallic~
shell designed as a dead form, and are clamped in the supporting frame. The special metallic shell facilitates this clamping, so that even for the mountings of the wearing parts, such as the slide plate, no cementing in with mortar is necessary, thus rendering possible a simple and rapid replacement, e.g. compared with conventional baked ceramic plates. This is of great advankage where different slide plates have to be used, e.g. in continuous casting, where magnesite plates are preferably used, and in -permanent-mould casting, where the concrete plates of the present~
invention are preferred.
The present invention will be further illustrated by way of the accompanying drawings in which:
Fig. 1 is a schematic section of a slider with wearing parts i.e. slide plate and discharge sleeve according to one embodiment of the pre.sent invention;
Fig. 2 is a schematic part section of a slider with a wearing part i.e. slide plate according to another embodiment of the present invention, and Fig. 3 is a plan view (partly cutaway) corresponding to III of Fig. 1.
. ~
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.
.. . . .
61~;'7 ! Referring to the drawings, slider 1 includes a slide plate 2, which has a passage bore 3 and is clamped in a slide frame 8. Slide plate 2 has an elastic part 17 which surrounds .. .. .
; passage bore 3 ànd tapers downwardly from the flat part of slide plate 2. Slide plate 2 is encased both on its outer rim and on the base of its flat part as well as the outer rim of elastic part 17 in a metallic shell 6. The slide plate 2 is manufactured such that refractory concrete and metallic shell have a specific thermal expansion coefficient of 0.7 to 0.9 %
at 1000C, preferably 0~8 ~ at 1000C. Suitably the me*allic shell contains a hydraulically binding fire-resistant refractory concrete of high alumina content, which concrete possesses a cold compressive strength measured on the dried raw product of at least 400 kp/cm , which after baking at 1400C becomes at least - 700 kp/cm2, and at 1400C has a dimensional stability of at least + 0.2 %.
The upper sliding face 20 of slide plate 2 and the ~-downwardly facing surface 25 of elastic part 17 are bare. The refractory concrete is desirably poured in from the elastic- ~
side opening of metallic shell 6. During pouring, passage bore ~-3 is maintained open by a core piece. In broken lines it is ~ ! --; indicated that during pouring of slide plate 2 a wearing sleeve , 24 surrounding same at the input end can be poured with it.
Slide plate 2 is clamped in slide frame 8 by a wedge member 10, which is held beneath an overhang 9 of frame 8 and presses against the rim of slide plate 2 when a pressure piece 11 fitted to the lateral round edge of slide plate 2 and partially attacking same is hammered in and slide plate 2 is clamped in with the aid of the opposite abutment 12 of frame 8. Close to abutment 12, frame 8 has an opening 13 for engaging the slide rod (not shown).
; From the flat part of slide frame 8 a collar 19 . :
: . .
, ; . ., /
~L~89L~
surrounding elastic part 17 of slide plate 2 e~tends downwardly.
A casting 14 is exchangeably mounted with the aid of lock 16 to collar 19, and a discharge sleeve 4 with a passage bore 5 is retained in casing 14. For this purpose the discharge sleeve 4 has a downwardly sloping area 15 resting against an opposed matching surface of a sealing sleeve 31, which is detachably retained, in turn, on housing 14. Discharge sleeve 4 is also encased in a metallic shell 7'designed as a dead form, i.e. the discharge sleeve is also manufactured by pouring refractory concrete into or in metallic shell 7 and allowing to set.
' Metallic shell 7 now co~ers only the peripheral surfaces of discharge sleeve 4, including sloping surfaces 15, while the end faces f'acing upwards and downwards are bare. At its top end the discharge sleeve 4 has a recess 18 which, like passage bore 5, has been kept open during pouring of discharge sleeve 4, and in which slide plate 2 engages with elastic part 17.
Fig. 2 illustrates an embodiment in which slide plate 21 is formed in one piece with the discharge sleeve. Here the elastic part and the discharge sleeve constitute a single unit with a single continuous passage bore 28. Slide plate 21 is also manufactured such that the desired metallic shell 22 serves as ~ I
.
a dead form into or in which the fire-proof refractory concrete has been poured and has set. The top horizontal sliding face 2g and the bottom horizontal end face 30 of slide plate 21 are ' no-t covered by metallic shell 22. The downwardly extending part of slide plate 21 which forms the discharge sleeve tapers down-wardly along its outside sur~ace. Collar 23 of slide frame 32 has a corresponding taper onits inside face, so that slide ., plate 21 is immovably and e.g. tightly retained as shown in Fig. 3 in slide frame 8. Fig. 3 illustrates the clamping of slide plate 2 or 21, in the plan view.
, ~ . - , . : ~ . . . .
, . . .
: . , In the drawings two embodiments of a slide plate and a discharge sleeve have been illustrated in detail, only as wearing parts of a sliding lock. Corresponding designs are directly derivea also for the bottom plate of a slide lock and of a charge sleeve, especially as bottom plate and slide plate, to which charge sleeve and discharge sleeve can also be identical or at least very similar in form and material.
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Refractory parts of this kind are known. German L
Unexamined Printed Spec. (DT-OS) 22 27 501, for example, discloses a sliding lock mechanism where the slide plate and the top plate are located in metallic housings and where the flat part of the slide plate which is in contact with the top plate is highly resistant to erosion and fire.
The present invention provides a wearing part of the~
aforementioned type with high dimensional stability and durability, which, while affording the desired tightness and strength, is substantially easier to manufacture, in particular without requiring mortar, than the conventional wearing parts for slide locks. The present invention also provides a method of manufac-turing such wearing parts as well as a slide lock with such wearing parts.
According to the present invention there is provided a wearing part o~ a slide lock for the discharge opening of vats containing molten metals made of a fire-resistant refractory concrete that is poured into the metallic shell designed as a dead form, wherein it sets.
The present invention also provides a slide lock for the discharge openings of vats containing molten metals, with wearing parts which are made of refractory material encased in a metal shell and are disposed in a supporting frame, the wearing parts being made of fire-resis-tant refractory concrete poured into the metallic shell and set therein, and are clamped in the supporting frame.
Unlike the conventional wearing parts, the wearing part ~ 1 - , : . ' .
. : :
346~7 of the present invention is producahle ln a single step, without the use of mortar, with high dimensional stability, by having the desired metallic shell itself serve as the castin~ mould, and thereby a close uni~n between the jacket and the refractory concrete is produced. The refractory wearing parts of the present invention are therefore produced economically and are of high I --quality. Surprisingly such wearing parts meet the high demands ¦~
made on coming into contact with molten metals.
While the aforementioned wearing parts such as slide plate, bottom plate, charge sleeve or discharge sleeve can each be furnished separately with i-ts own metallic jacket as a dead form, as is especially desirable when providing for alternating-discharge, it is also possible to pour the slide plate and discharge sleeve and/or bottom plate and charge sleeve commonly in a one-piece metallic shell as a dead form. Especially in the case of wearing part with a passage bore, such as a slide plate, it is desirable to pour a sleeve, e.g. a wearing sleeve, surrounding the passage bore, in the refractory concrete at the same time.
In this way the manufacturing process can be simplified, because the passage sleeve remains in the wearing part as part of said form. Since the wearing part, made up of different materials, ~
i.e. metal and refractory material, is exposed to high thermal ~ ;
stresses, it is desirable for the refractory concrete of the -., . ..
wearing part to be that disclosed in German Unexamined Printed Spec. (DT-OS) 26 24 299.
The present invention further provides a method of producing a wearing part of a slide lock for the discharge opening of vats containing molten metals, e.g. slide plate, bottom plate, charge sleeve, discharge sleeve, consisting of a refxactory material encased in a metallic shell, in which method the refractory concrete is poured into the metallic shell designed as a dead form, and is allowed to set therein. At the same time '~
' .
.- , . :
, 66~
slide plates and discharge sleeve and /or bottom plate and charge sleeve can be poured in a one-piece metallic shell as a dead form. In a particular embodiment of the process, when pouring the refractory concrete in the metallic shell, a sleeve surrounding the passage bore, e.g. a wearing sleevej is also poured.
A slide lock for the discharge opening of vats contain-ing molten metal, with wearing parts, e.g. slide plate, bottom plate, charge sleeve or dlscharge sleeve, which comprise refractory material encased in a metallic shell and are disposed in a supporting frame, is characterized, in accordance with the present invention, in that the wearing parts consist of fire-resistant refractory concrete poured and set in the metallic~
shell designed as a dead form, and are clamped in the supporting frame. The special metallic shell facilitates this clamping, so that even for the mountings of the wearing parts, such as the slide plate, no cementing in with mortar is necessary, thus rendering possible a simple and rapid replacement, e.g. compared with conventional baked ceramic plates. This is of great advankage where different slide plates have to be used, e.g. in continuous casting, where magnesite plates are preferably used, and in -permanent-mould casting, where the concrete plates of the present~
invention are preferred.
The present invention will be further illustrated by way of the accompanying drawings in which:
Fig. 1 is a schematic section of a slider with wearing parts i.e. slide plate and discharge sleeve according to one embodiment of the pre.sent invention;
Fig. 2 is a schematic part section of a slider with a wearing part i.e. slide plate according to another embodiment of the present invention, and Fig. 3 is a plan view (partly cutaway) corresponding to III of Fig. 1.
. ~
- 3 - ~
.
.. . . .
61~;'7 ! Referring to the drawings, slider 1 includes a slide plate 2, which has a passage bore 3 and is clamped in a slide frame 8. Slide plate 2 has an elastic part 17 which surrounds .. .. .
; passage bore 3 ànd tapers downwardly from the flat part of slide plate 2. Slide plate 2 is encased both on its outer rim and on the base of its flat part as well as the outer rim of elastic part 17 in a metallic shell 6. The slide plate 2 is manufactured such that refractory concrete and metallic shell have a specific thermal expansion coefficient of 0.7 to 0.9 %
at 1000C, preferably 0~8 ~ at 1000C. Suitably the me*allic shell contains a hydraulically binding fire-resistant refractory concrete of high alumina content, which concrete possesses a cold compressive strength measured on the dried raw product of at least 400 kp/cm , which after baking at 1400C becomes at least - 700 kp/cm2, and at 1400C has a dimensional stability of at least + 0.2 %.
The upper sliding face 20 of slide plate 2 and the ~-downwardly facing surface 25 of elastic part 17 are bare. The refractory concrete is desirably poured in from the elastic- ~
side opening of metallic shell 6. During pouring, passage bore ~-3 is maintained open by a core piece. In broken lines it is ~ ! --; indicated that during pouring of slide plate 2 a wearing sleeve , 24 surrounding same at the input end can be poured with it.
Slide plate 2 is clamped in slide frame 8 by a wedge member 10, which is held beneath an overhang 9 of frame 8 and presses against the rim of slide plate 2 when a pressure piece 11 fitted to the lateral round edge of slide plate 2 and partially attacking same is hammered in and slide plate 2 is clamped in with the aid of the opposite abutment 12 of frame 8. Close to abutment 12, frame 8 has an opening 13 for engaging the slide rod (not shown).
; From the flat part of slide frame 8 a collar 19 . :
: . .
, ; . ., /
~L~89L~
surrounding elastic part 17 of slide plate 2 e~tends downwardly.
A casting 14 is exchangeably mounted with the aid of lock 16 to collar 19, and a discharge sleeve 4 with a passage bore 5 is retained in casing 14. For this purpose the discharge sleeve 4 has a downwardly sloping area 15 resting against an opposed matching surface of a sealing sleeve 31, which is detachably retained, in turn, on housing 14. Discharge sleeve 4 is also encased in a metallic shell 7'designed as a dead form, i.e. the discharge sleeve is also manufactured by pouring refractory concrete into or in metallic shell 7 and allowing to set.
' Metallic shell 7 now co~ers only the peripheral surfaces of discharge sleeve 4, including sloping surfaces 15, while the end faces f'acing upwards and downwards are bare. At its top end the discharge sleeve 4 has a recess 18 which, like passage bore 5, has been kept open during pouring of discharge sleeve 4, and in which slide plate 2 engages with elastic part 17.
Fig. 2 illustrates an embodiment in which slide plate 21 is formed in one piece with the discharge sleeve. Here the elastic part and the discharge sleeve constitute a single unit with a single continuous passage bore 28. Slide plate 21 is also manufactured such that the desired metallic shell 22 serves as ~ I
.
a dead form into or in which the fire-proof refractory concrete has been poured and has set. The top horizontal sliding face 2g and the bottom horizontal end face 30 of slide plate 21 are ' no-t covered by metallic shell 22. The downwardly extending part of slide plate 21 which forms the discharge sleeve tapers down-wardly along its outside sur~ace. Collar 23 of slide frame 32 has a corresponding taper onits inside face, so that slide ., plate 21 is immovably and e.g. tightly retained as shown in Fig. 3 in slide frame 8. Fig. 3 illustrates the clamping of slide plate 2 or 21, in the plan view.
, ~ . - , . : ~ . . . .
, . . .
: . , In the drawings two embodiments of a slide plate and a discharge sleeve have been illustrated in detail, only as wearing parts of a sliding lock. Corresponding designs are directly derivea also for the bottom plate of a slide lock and of a charge sleeve, especially as bottom plate and slide plate, to which charge sleeve and discharge sleeve can also be identical or at least very similar in form and material.
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Claims (15)
PROPERTY OR PRIVILEGE IS CLAIMED ARE DEFINED AS FOLLOWS:
1. A wearing part for a slide lock for the discharge opening on vats containing molten metals formed of refractory material clad in a metallic shell, said part being made from a fire-resistant refractory concrete poured into the metallic shell and set.
2. A wearing part as claimed in claim 1, which is at least one of a slide plate, bottom plate, charge sleeve and discharge sleeve.
3. A wearing part according to claim l, in which a slide plate and at least one of a discharge sleeve and bottom plate and charge brick are poured together in a one-piece metallic shell.
4. A wearing part according to claim l, 2 or 3, in which the metallic shell and the fire resistant refractory concrete have similar coefficients of thermal expansion.
5. A wearing part as claimed in claim l, 2 or 3, in which the metallic shell and the concrete have a specific coefficient of thermal expansion of 0.7 to 0.9% at 1000°C.
6. A wearing part according to claim 1, 2 or 3, in which the metallic shell contains a hydraulically binding fire-resistant refractory concrete of high alumina content, which concrete possesses a cold compressive strength measured on the dried raw product of at least 400 kp/cm2, which after baking at 1400°C becomes at least 700 kg/cm2, and at 1400°C
has a dimensional stability of at least ? 0.2 %.
has a dimensional stability of at least ? 0.2 %.
7. A method of manufacturing a wearing part of a slide lock for the discharge opening of vats containing molten metals of a refractory material encased by a metallic shell, in which method the refractory concrete is poured into the metallic shell which is a dead form and is allowed to set.
8. A method as claimed in claim 7, in which the metallic shell is shaped to form at least one of a slide plate, bottom plate, charge sleeve and discharge sleeve.
9. A method according to claim 8, in which a slide plate and at least one of a discharge sleeve and bottom plate and charge sleeve are poured together in a one-piece metallic shell as a dead form.
10. A method according to claim 7, 8 or 9, in which when pouring the refractory concrete into the metallic shell a sleeve encasing the passage bore is simultaneously poured.
11. A method according to claim 7, 8 or 9, in which the refractory concrete is a hydraulically binding fire-resistant refractory concrete of high alumina content, which concrete possesses a cold compressive strength measured on the dried raw product of at least 400 kp/cm2, which after baking at 1400° C becomes at least 700 kp/cm2, and at 1400° C has a dimensional stability of at least ? 0.2 %.
12. A slide lock for the discharge openings of vats containing molten metals, with wearing parts which are made of refractory material encased in a metal shell and are disposed in a supporting frame, the wearing parts being made of fire-resistant refractory concrete poured into the metallic shell and set therein, and are clamped in the supporting frame.
13. A slide lock as claimed in claim 12, in which the wearing part is at least one of a slide plate, bottom plate, charge sleeve and discharge sleeve.
14. A slide lock according to claim 13, including a wedge member on the supporting frame, which wedge member acts through a pressure piece adapted in shape to the form of the slide plate to clamp the slide plate in the supporting frame.
15. A slide lock according to claim 14, in which the pressure piece exerts clamping forces against the slide plate both longitudinally and transversely thereto.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA282,026A CA1084667A (en) | 1977-07-05 | 1977-07-05 | Method of manufacturing wearing parts for slide locks and product |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA282,026A CA1084667A (en) | 1977-07-05 | 1977-07-05 | Method of manufacturing wearing parts for slide locks and product |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1084667A true CA1084667A (en) | 1980-09-02 |
Family
ID=4109062
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA282,026A Expired CA1084667A (en) | 1977-07-05 | 1977-07-05 | Method of manufacturing wearing parts for slide locks and product |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA1084667A (en) |
-
1977
- 1977-07-05 CA CA282,026A patent/CA1084667A/en not_active Expired
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry |