EP2271450A1 - Kaltstrang für eine stranggiessanlage und verfahren zu dessen verwendung - Google Patents
Kaltstrang für eine stranggiessanlage und verfahren zu dessen verwendungInfo
- Publication number
- EP2271450A1 EP2271450A1 EP09726659A EP09726659A EP2271450A1 EP 2271450 A1 EP2271450 A1 EP 2271450A1 EP 09726659 A EP09726659 A EP 09726659A EP 09726659 A EP09726659 A EP 09726659A EP 2271450 A1 EP2271450 A1 EP 2271450A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- strand
- blocking element
- dummy bar
- cold
- pivoting
- 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
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
-
- 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
- B22D11/085—Means for storing or introducing the starter bars in the moulds
Definitions
- the invention relates to a cold strand for a continuous casting plant for casting a metal strand comprising a cold strand head, a transition piece and a link chain, wherein the transition piece between the cold strand head and the link chain is arranged, wherein the transition piece and / or the link chain of a number hingedly interconnected
- the members are pivotable about a perpendicular to the longitudinal axis of the dummy bar extending transverse axis relative to each other.
- the invention relates to a method for the continuous casting of a metal strand, in which such a cold strand is used.
- a starter line of the generic type is used to start a continuous continuous casting process in a continuous casting plant.
- the mold of the continuous casting is closed at its output to the cold extrusion head in order to bring the melt in a first filling process in the mold can; the direct extrusion of the melt from the mold is prevented by the cold extrusion head.
- After a first solidification of the forming strand is extended with the cold strand of the mold and promoted on the strand leadership of the continuous casting and a horizontal roller conveyor. The cold strand is then fed back to the mold to stand for the next startup available.
- top feeding the cold strand is circulated through the continuous casting plant, ie it is pulled upwards to the level of the casting platform and onto a cold extruder carriage behind a horizontal roller conveyor and then conveyed again in the direction of the mold.
- Cold strands of the generic type are disclosed, for example, in DE 2 103 417 A1, in EP 0 043 365 B1, in US Pat. No. 4,632,175 and in DE 10 2006 023 503 B3.
- the cold strand head usually has a greater thickness than the following link chain, it comes with the flat resting of the dummy bar, for example on the cold extrudiate, sometimes to considerable tension in the joints; the limb-like cold strand bulges. Accordingly, there is a considerable load on the limbs or joints, which causes wear, especially when the cold strand head rests with the transition elements on the cold extrudate. This applies in particular when in a relative pivoting direction of the joints no Abwinkein the colliding chain links is allowed. In this deployment and change position handling of the dummy bar is then problematic, especially if parts of the dummy bar are to be changed. For this purpose, it is then usually necessary to raise the cold strand by means of a crane to reduce the stresses in the joints.
- the present invention has for its object to provide a cold strand of the type mentioned in such a way that it is possible without special measures to avoid high voltage loads in the joints of the dummy strand in its even resting, especially on a cold extruder carriage. Furthermore, a method for its use should be proposed.
- the solution of this object by the invention is characterized in that at least one joint between two hingedly connected members of the dummy bar is formed so as to allow relative pivoting of the members about the transverse axis, which is greater than any during use of the Cold strand occurring swivel angle, wherein in or on the joint, a blocking element is arranged, which is arranged to be movable in a direction perpendicular to the longitudinal axis of the dummy bar or the member and perpendicular to the transverse axis, wherein the blocking element can assume a position in which the pivoting of the members is not affected by the locking element, and can assume a position in which the pivoting the limbs in a pivoting direction is limited to a defined pivoting angle.
- the blocking element is preferably arranged displaceably in a linear guide.
- the blocking element preferably assumes its position solely by the action of gravity.
- the provided with a blocking element joints can be arranged exclusively in the transition piece of the dummy bar.
- the thickness of the cold-rod head is greater than the thickness of the link chain.
- the method for continuous casting of a metal strand in which a cold strand of the type described is used, provides that the cold strand is first retracted from above into a mold, that it is then guided by the mold down along a strand guide, that he then behind the strand guide is conveyed on a horizontal roller conveyor, that it continues to be pulled upwards from the roller conveyor onto a cold extruder carriage located on a casting platform and the cold strand head is automatically decoupled from the hot strand so that it is subsequently moved horizontally in the direction of the mold and Finally, for the next sprue, it is again inserted from above into the mold.
- the method is characterized in that the locking element is in the position during retraction into the mold, in which the pivoting of the links is not influenced by the blocking element.
- the blocking element is guided downwards along the strand guide from the position in which the pivoting of the links through the blocking element is not influenced is moved to the position in which the pivoting of the links is limited to a defined pivoting angle.
- the blocking element is located during the movement of the dummy bar on the horizontal roller conveyor in the position in which the pivoting of the links is limited to a defined tilting angle.
- the locking element can, however, move during the movement of the dummy bar up on the cold runner carriage from the position in which the pivoting of the links is limited to a defined pivot angle, in the position in which the pivoting of the links is not affected by the blocking element.
- the blocking element is during the horizontal movement of the dummy bar on the casting platform on the mold to in the position in which the pivoting of the members is not affected by the blocking element.
- the movement of the locking element between the positions also takes place here preferably exclusively by the weight of the locking element.
- a vertically - as a result of gravity - movable support disk is moved in a corresponding slot, depending on the use status of the dummy bar, d. H. depending on the current location and the location of the dummy bar.
- the support disc acting as a blocking element either allows a bending of two adjacent chain links or prevents them depending on the position of the locking element in the joint.
- the proposed solution makes it possible to enable a low-wear operation of the dummy bar and improved changing conditions regardless of the thickness ratios (ratio of the thickness of the cold strand head to the thickness of the link chain) to achieve. Consequently, even with a flat support, the cold strand does not produce a "hump", which leads to the high stresses in the joints in the previously known solutions.
- the proposed method of operating such a dummy string relies on the "top feeding" of the dummy bar and on the use of the cold leg in the circular circulation, i.e. in the circulating system.
- FIG. 1 is a perspective view of a cold strand for continuous casting
- Fig. 2 shows schematically the circulation of the dummy bar in a continuous casting plant, are shown by the respective cutouts, and
- Fig. 3a to 3h schematically two adjacent links of the dummy bar, which are equipped in a joint with a blocking element.
- a cold strand 1 is seen, which is used in a continuous casting plant.
- the dummy bar has a longitudinal axis L; he has a cold strand head 2, whose geometry is adapted to the dimensions of a mold.
- Behind the Cold strand head 2 is a transition piece 3 in the form of some articulated links 5, 6, to which in turn a link chain 4 connects.
- the cold strand 1 is previously known, with reference to the above-mentioned documents relating to the prior art.
- the cold strand head 2 has a thickness D which is greater than the thickness d of the link chain. 4
- two adjacent members 5, 6 can pivot relative to one another about a transverse axis Q at a joint 7 (pivot angle ⁇ , see FIG. the transverse axis Q is perpendicular to the longitudinal axis L.
- Fig. 2 the circulation of the dummy bar 1 is illustrated by a continuous casting, wherein the individual stations are indicated only schematically.
- the cold strand 1 enters a mold 10.
- the cold strand 1 is guided along a strand guide 11.
- the cold strand 1 in the strand guide as well as on a roller conveyor 12 is supported horizontally resting.
- a fourth location IV of the cold leg 1 is lifted by a lifting means, not shown up to the level of a casting platform and pulled on a cold extruder carriage 13.
- a location V the cold strand located on the cold extrudate 13 is then finally moved again in the direction of the mold 10 in order to be available for the next use.
- an exchange of parts of the dummy bar 1 can also take place on the cold extrudate 13 at location V in order to adapt it, for example, to a different geometry of a mold.
- Figures 3a to 3h are - corresponding to the respective marked locations along the circulation of the dummy bar 1 - outlined two members 5 and 6, which comprise a hinge 7, which if necessary a relative pivoting of the members 5, 6 by a pivot angle ⁇ ( see Fig. 3a) but this is prevented under certain conditions.
- the permissible pivot angle a of the joint 7 is greater than is required in all operating situations of the dummy bar 1, d. H. the pivotability of the links 5, 6 is generally not limited.
- Figures 3a to 3h show the enlarged sections of the members 5, 6 together with joint 7 associated with the locations I - V according to Figure 2 in the course of the path, the cold strand 1 travels in its circulation.
- a blocking element 8 is inserted in the linear guide 9, a blocking element 8 is inserted.
- the blocking element 8 can move between two positions A and B:
- the blocking element 8 In the position A (see, for example, Fig. 3a), the blocking element 8 is displaced so that a stop edge 14 on the member 6 can not come into contact with it. A pivoting between the two members 5, 6 to the pivot angle ⁇ is possible up to almost any pivoting angles.
- the blocking element 8 In the other position B (see, for example, Fig. 3d), the blocking element 8 is in the other end region of the linear guide 9, so that now in the case that the members 5, 6 want to pivot relative to each other, the stop edge 14 abuts the blocking element 8 and prevents such a pan.
- the blocking element 8 shifts solely by its own weight in the respective end region of the linear guide 9, d. H. in the blocking or in the release position A, B.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Continuous Casting (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102008016759A DE102008016759B4 (de) | 2008-04-02 | 2008-04-02 | Kaltstrang für eine Stranggießanlage und Verfahren zu dessen Verwendung |
| PCT/EP2009/002035 WO2009121492A1 (de) | 2008-04-02 | 2009-03-19 | Kaltstrang für eine stranggiessanlage und verfahren zu dessen verwendung |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP2271450A1 true EP2271450A1 (de) | 2011-01-12 |
| EP2271450B1 EP2271450B1 (de) | 2017-09-20 |
Family
ID=40756817
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP09726659.7A Active EP2271450B1 (de) | 2008-04-02 | 2009-03-19 | Kaltstrang für eine stranggiessanlage und verfahren zu dessen verwendung |
Country Status (9)
| Country | Link |
|---|---|
| US (1) | US8167025B2 (de) |
| EP (1) | EP2271450B1 (de) |
| JP (1) | JP5107459B2 (de) |
| KR (1) | KR101246069B1 (de) |
| CN (1) | CN101983112B (de) |
| CA (1) | CA2719060C (de) |
| DE (1) | DE102008016759B4 (de) |
| ES (1) | ES2652588T3 (de) |
| WO (1) | WO2009121492A1 (de) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102010007660B4 (de) | 2010-01-12 | 2023-06-01 | Sms Group Gmbh | Stranggießmaschine |
| EP3012042B1 (de) * | 2013-06-20 | 2018-05-02 | JP Steel Plantech Co. | Stranggussvorrichtung und verfahren zur verwendung davon |
| DE102013213650A1 (de) * | 2013-07-12 | 2015-01-15 | Siemens Vai Metals Technologies Gmbh | Automatische Kaltstrangzentrierung auf einem Kaltstrangwagen |
| CN105458197B (zh) * | 2016-01-18 | 2018-04-03 | 中国重型机械研究院股份公司 | 一种引锭链 |
| US11109895B2 (en) | 2016-10-26 | 2021-09-07 | Warsaw Orthopedic, Inc. | Spinal construct |
| US10966760B2 (en) | 2016-10-28 | 2021-04-06 | Warsaw Orthopedic, Inc. | Spinal implant system and method |
| EP3663017A1 (de) | 2018-12-04 | 2020-06-10 | Primetals Technologies Austria GmbH | Überwachen eines verschleisszustands einer strangführungsrolle einer stranggiessanlage |
Family Cites Families (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3581808A (en) * | 1968-12-26 | 1971-06-01 | Gamma Engineering Ltd | Starting device for continuous casting machine |
| CH504256A (de) | 1970-01-27 | 1971-03-15 | Concast Ag | Anfahrkopf zum Giessen von Strangquerschnitten unterschiedlicher Breiten in einer Stranggiessanlage |
| AT340083B (de) * | 1976-01-16 | 1977-11-25 | Voest Ag | Anfahrstrang |
| US4074754A (en) * | 1976-09-27 | 1978-02-21 | Exxon Production Research Company | Method for producing geothermal energy and minerals |
| JPS5546363Y2 (de) * | 1977-02-01 | 1980-10-30 | ||
| AT364473B (de) * | 1980-06-30 | 1981-10-27 | Voest Alpine Ag | Anfahrstrang fuer stranggiessanlagen |
| US4383571A (en) * | 1981-03-16 | 1983-05-17 | Gladwin Corporation | Dummy bar for continuous casting equipment |
| US4632175A (en) | 1985-05-09 | 1986-12-30 | Continuous Casting Systems Inc. | Continuous casting machine |
| CN2222021Y (zh) * | 1995-04-05 | 1996-03-13 | 衡阳有色冶金机械总厂 | 连铸机刚性引锭杆存放传动装置 |
| CN2317977Y (zh) * | 1997-12-08 | 1999-05-12 | 王国忱 | 一种连铸机用的钢弹引锭杆 |
| AT501860B1 (de) | 2005-06-08 | 2007-03-15 | Voest Alpine Ind Anlagen | Anfahrstrang für eine stranggiessanlage |
| DE102006025503A1 (de) * | 2006-05-23 | 2007-11-29 | Andreas Peiker | Verbindungseinrichtung |
-
2008
- 2008-04-02 DE DE102008016759A patent/DE102008016759B4/de active Active
-
2009
- 2009-03-19 KR KR1020107020150A patent/KR101246069B1/ko not_active Expired - Fee Related
- 2009-03-19 US US12/736,366 patent/US8167025B2/en not_active Expired - Fee Related
- 2009-03-19 CA CA2719060A patent/CA2719060C/en not_active Expired - Fee Related
- 2009-03-19 EP EP09726659.7A patent/EP2271450B1/de active Active
- 2009-03-19 CN CN2009801125213A patent/CN101983112B/zh not_active Expired - Fee Related
- 2009-03-19 WO PCT/EP2009/002035 patent/WO2009121492A1/de not_active Ceased
- 2009-03-19 JP JP2011501131A patent/JP5107459B2/ja not_active Expired - Fee Related
- 2009-03-19 ES ES09726659.7T patent/ES2652588T3/es active Active
Non-Patent Citations (1)
| Title |
|---|
| See references of WO2009121492A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| EP2271450B1 (de) | 2017-09-20 |
| CN101983112B (zh) | 2013-06-19 |
| DE102008016759A1 (de) | 2009-10-15 |
| CA2719060A1 (en) | 2009-10-08 |
| CA2719060C (en) | 2012-05-22 |
| KR20100114539A (ko) | 2010-10-25 |
| KR101246069B1 (ko) | 2013-03-21 |
| JP5107459B2 (ja) | 2012-12-26 |
| DE102008016759B4 (de) | 2010-08-05 |
| CN101983112A (zh) | 2011-03-02 |
| WO2009121492A1 (de) | 2009-10-08 |
| ES2652588T3 (es) | 2018-02-05 |
| US8167025B2 (en) | 2012-05-01 |
| US20110094704A1 (en) | 2011-04-28 |
| JP2011515226A (ja) | 2011-05-19 |
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