EP0332348A1 - Continuous casting machine dummy bar - Google Patents
Continuous casting machine dummy bar Download PDFInfo
- Publication number
- EP0332348A1 EP0332348A1 EP89302109A EP89302109A EP0332348A1 EP 0332348 A1 EP0332348 A1 EP 0332348A1 EP 89302109 A EP89302109 A EP 89302109A EP 89302109 A EP89302109 A EP 89302109A EP 0332348 A1 EP0332348 A1 EP 0332348A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- sub
- bars
- bar
- recess
- dummy bar
- 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.)
- Granted
Links
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
- B22D11/08—Accessories for starting the casting procedure
- B22D11/081—Starter bars
Definitions
- the present invention relates to a bar for use as a dummy bar in a continuous casting machine.
- the invention provides a dummy bar made up of a plurality of sub-bars each having a spigot on one end and a recess in the other end, so that sub-bars can be interconnected in series with the spigot of one sub-bar engaging in the recess of the next sub-bar, in order to provide a dummy bar made up of a number of sub-bars.
- the invention provides a dummy bar comprising: a first sub-bar having at one end a recess, a second sub-bar having at one end a spigot for engaging the recess of the first sub-bar to interconnect the sub-bars and hydraulic means for urging the sub-bars to interconnect with one another.
- the hydraulic means is the form of a hydraulic piston and cylinder assembly mounted within one of the sub-bars, and interconnectable with the other sub-bar in use.
- a dummy bar is made up of series of sub-bars the ends of only two of which are shown.
- the end of one sub-bar 1 has a spigot 2 with a notch 3.
- a chamber 4 in which slides a piston 5 connected to a rod 6 which projects through the spigot 2 and at the end of the rod 6 is an eye 7.
- a recess 11 In the end of the other sub-bar 10 is a recess 11 with a secondary recess 12 at the back of the recess 11.
- Transversely through the sub-bar 10 extends a hole 13 which meets the sub-recess 12.
- the hole 13 through the sub-recess 12 receives a pin 16, in use.
- each sub-bar has at one end a spigot and associated piston cylinder assembly, and recesses with associated holes at its other end.
- the two sub-bars can be separated by a reverse procedure involving removing the pin 16 and applying hydraulic pressure into the left hand side of the chamber 4 to move the piston and piston rod to the right as shown in ( Figure 2), thereby separating the two sub-bars from one another.
- the hydraulic arrangement could be temporarily secured by means of bolts to the outside of the sub-bars to draw them together and once the sub-bars are secured by means of the grub screw engaging the notch in the spigot, the hydraulic mechanism could be removed from the interconnected sub-bars.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Actuator (AREA)
Abstract
Description
- The present invention relates to a bar for use as a dummy bar in a continuous casting machine.
- It is well known to use rigid dummy bars in the initial phase of a casting operation in a vertical, horizontal, or curved mould continuous casting machine. Such rigid bars are difficult to handle because they are usually very long, typically 10 to 20 m. Where different sizes are to be cast it is necessary to have a dedicated dummy bar for each size, or to use interchangeable taper adaptations at the mould end.
- According to a first aspect the invention provides a dummy bar made up of a plurality of sub-bars each having a spigot on one end and a recess in the other end, so that sub-bars can be interconnected in series with the spigot of one sub-bar engaging in the recess of the next sub-bar, in order to provide a dummy bar made up of a number of sub-bars.
- In order to prevent working of the joints between the sub-bars when subject to the large reversing cyclic load in a continuous casting machine it is necessary for the joints between the said bars to be very stiff. Also for practical purposes, the joints need to be capable of being easily assembled and disassembled.
- According to another aspect the invention provides a dummy bar comprising: a first sub-bar having at one end a recess, a second sub-bar having at one end a spigot for engaging the recess of the first sub-bar to interconnect the sub-bars and hydraulic means for urging the sub-bars to interconnect with one another.
- Preferably the hydraulic means is the form of a hydraulic piston and cylinder assembly mounted within one of the sub-bars, and interconnectable with the other sub-bar in use.
- A preferred embodiment of the invention will now be described, by way of example, with reference to the accompanying drawings, wherein:
- Figure 1 is a cross-sectional view through two adjacent sub-bars of a dummy bar prior to interconnection;
- Figure 2 is a similar view to Figure 1 but with the two sub-bars of the dummy bar interconnected.
- Referring first to Figure 1, a dummy bar is made up of series of sub-bars the ends of only two of which are shown. The end of one sub-bar 1 has a
spigot 2 with a notch 3. Within the sub-bar 1 is achamber 4 in which slides apiston 5 connected to arod 6 which projects through thespigot 2 and at the end of therod 6 is an eye 7. In the end of the other sub-bar 10 is a recess 11 with asecondary recess 12 at the back of the recess 11. Transversely through the sub-bar 10 extends a hole 13 which meets thesub-recess 12. Also there is an inclined threadedhole 14 joining the recess 11, which receives agrub screw 15. The hole 13 through thesub-recess 12 receives apin 16, in use. - It is to be appreciated each sub-bar has at one end a spigot and associated piston cylinder assembly, and recesses with associated holes at its other end.
- The interconnection of two sub-bars will now be described, first hydraulic pressure is applied to the
chamber 4 in the sub-bar 1 to move the piston and associatedrod 6 to the right as shown in the Figures where therod 6 projects from thespigot 2. The eye of therod 6 is positioned in thesub-recess 12 in the other sub-bar 10 and thepin 16 inserted into the hole 13 to interlock therod 6 andsub-bar 2. By applying hydraulic fluid to the opposite part of thechamber 4, i.e. the right hand side of thepiston 5, the two sub-bars will be drawn together so that thespigot 2 engages in the recess 11. It is appreciated that by means of the hydraulic piston cylinder arrangement the two sub-bars can be brought together firmly. While still being held tightly together by the hydraulic pressure thegrub screw 15 is tightened into the notch 3 in thespigot 2 to secure the two sub-bars 1 and 10 together, this is a situation illustrated in Figure 2. - The two sub-bars can be separated by a reverse procedure involving removing the
pin 16 and applying hydraulic pressure into the left hand side of thechamber 4 to move the piston and piston rod to the right as shown in (Figure 2), thereby separating the two sub-bars from one another. - In an alternative embodiment, the hydraulic arrangement could be temporarily secured by means of bolts to the outside of the sub-bars to draw them together and once the sub-bars are secured by means of the grub screw engaging the notch in the spigot, the hydraulic mechanism could be removed from the interconnected sub-bars.
Claims (6)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB888805376A GB8805376D0 (en) | 1988-03-07 | 1988-03-07 | Continuous casting machine dummy bar |
GB8805376 | 1988-03-07 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0332348A1 true EP0332348A1 (en) | 1989-09-13 |
EP0332348B1 EP0332348B1 (en) | 1991-05-29 |
Family
ID=10632969
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP19890302109 Expired EP0332348B1 (en) | 1988-03-07 | 1989-03-02 | Continuous casting machine dummy bar |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP0332348B1 (en) |
GB (1) | GB8805376D0 (en) |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR1070952A (en) * | 1952-02-20 | 1954-08-20 | Boehler & Co Ag Geb | Downpipe or the like for bar casting installation |
FR1220316A (en) * | 1958-02-21 | 1960-05-24 | British Iron Steel Research | Method and apparatus for continuous metal casting |
GB1119182A (en) * | 1965-04-01 | 1968-07-10 | Ashmore Benson Pease And Compa | Starting bars for continuous casting |
US4043383A (en) * | 1976-09-23 | 1977-08-23 | Koppers Company, Inc. | Continuous casting starting bar and stowage thereof |
-
1988
- 1988-03-07 GB GB888805376A patent/GB8805376D0/en active Pending
-
1989
- 1989-03-02 EP EP19890302109 patent/EP0332348B1/en not_active Expired
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR1070952A (en) * | 1952-02-20 | 1954-08-20 | Boehler & Co Ag Geb | Downpipe or the like for bar casting installation |
FR1220316A (en) * | 1958-02-21 | 1960-05-24 | British Iron Steel Research | Method and apparatus for continuous metal casting |
GB1119182A (en) * | 1965-04-01 | 1968-07-10 | Ashmore Benson Pease And Compa | Starting bars for continuous casting |
US4043383A (en) * | 1976-09-23 | 1977-08-23 | Koppers Company, Inc. | Continuous casting starting bar and stowage thereof |
Also Published As
Publication number | Publication date |
---|---|
EP0332348B1 (en) | 1991-05-29 |
GB8805376D0 (en) | 1988-04-07 |
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Legal Events
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PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
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