CN201333506Y - Back-bending dummy bar head - Google Patents
Back-bending dummy bar head Download PDFInfo
- Publication number
- CN201333506Y CN201333506Y CNU2008202109916U CN200820210991U CN201333506Y CN 201333506 Y CN201333506 Y CN 201333506Y CN U2008202109916 U CNU2008202109916 U CN U2008202109916U CN 200820210991 U CN200820210991 U CN 200820210991U CN 201333506 Y CN201333506 Y CN 201333506Y
- Authority
- CN
- China
- Prior art keywords
- dummy bar
- bar head
- head
- circle segments
- segmental arc
- 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 - Fee Related
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Abstract
The utility model discloses a back-bending dummy bar head, which is applicable to smooth separation of a square billet or cast billets with other cross sections from the dummy bar head in the metallurgical casting process. A round runner or a fan-shaped groove is formed between the plane of a back plane line of the dummy bar head and an circular line or an arc-shaped line on the head of the dummy bar head; the back plane line is tangent to the circular line or the arc-shaped line at a point K; an inner groove is formed on the other side of the head of the dummy bar head; and a round hole is formed on the end of the dummy bar head. The back-bending dummy bar head can be used for continuous casting of cast billets with different cross sections; and the ingot (hook) stripping rate can be improved by 30% to 50%, the service life can be prolonged by 5 to 10 times, the cost is reduced and the operation conditions are improved.
Description
Technical field
The utility model relates to a kind of dummy bar head, relates in particular to a kind of kinky back type dummy bar head that is applied to produce in the metallurgical steel plant continuous casting production procedure square strand, belongs to the equipment appurtenance of metallurgical continuous casting.
Background technology
The dummy bar head that is used as the strand (as square billet etc.) of drawing after solidifying in metallurgical continuous casting steel machine before the utility model (the being continuous casting) production technology from the molten steel crystallizer adopts the casting hook dummy bar head of cliff cut style usually, when continuous casting begins in order to prevent that (or stop) doubt the gap that solid molten steel enters dummy bar head and crystallizer inwall, must this gap be filled up or fill with asbestos cord or other refractory material, not so treating that molten steel enters this gap can be with dummy bar head and molten steel solidification together, can not break off relations smoothly, when entering cooling zone or cold bed, continuous casting billet dummy bar head must be broken off relations with other method, as oxyacetylene metal-cutting, both influence the service life of dummy bar head, increased unnecessary cost for producing again.Though in the past few years each smelter carried out many developments to this, problem is not satisfactorily resolved.
Summary of the invention
The purpose of this utility model is to provide a kind of kinky back type dummy bar head that the ingot rate can reach 80-100%, long service life and be applicable to various section configuration strands that takes off.
The technical solution adopted in the utility model is for achieving the above object: the dummy bar head of making a stature rounded tail side of metal material such as cast steel, slick and sly groove or the fan groove that processing has the certain curvature radius crossed with the changeover portion of the head of being close to the crystallizer tube wall in the straight back side of head of this dummy bar head, the head of dummy bar head is divided into AB circle segments or segmental arc, BC straightway and CD circle segments or segmental arc, what link to each other with CD circle segments or segmental arc is DE circle segments and EF circle segments segmental arc, and is made of the internal channel of dummy bar head CD section, DE section and EF section.Be processed with the circular port that can insert removable pin on the straight shaped end (being tail end) of dummy bar head, can removable pin be inserted through this circular hole when transiting rod links to each other with dummy bar head, the tail end of dummy bar head straight section is that spacing is arranged is the conical head of d.
A kind of kinky back type dummy bar head that adopts as above technical scheme to provide is compared with the cliff cut style dummy bar head, and technique effect is:
1. take off ingot (hook) rate and improve 30-50%;
2. but life-span in the service life 5-10 of dummy bar head doubly;
3. because the dummy bar head continuous casting billet breaks away from easily, greatly reduced labor intensity of operating personnel.
Description of drawings
Fig. 1 is the positive partial schematic sectional view of a kind of kinky back type dummy bar head described in the utility model, also is Figure of abstract of the present utility model.
Fig. 2 is the schematic top plan view of Fig. 1.
The specific embodiment
Below in conjunction with accompanying drawing the specific embodiment of the present utility model is described in further detail.
Between the bottom of dummy bar head 1 tool back plane line and dummy bar head head round wire or curved line, be processed with slick and sly groove or fan groove 2; and the point of the K on round wire or the curved line is tool back plane line and the circle or the tangent point of contact of arc of dummy bar head 1; before molten steel enters crystallizer by continuous casting tundish; the head of dummy bar head 1 is put into crystallizer; and make the point of contact K on the dummy bar head 1 be close to the crystallizer inwall; molten steel is not entered in slick and sly groove or the fan groove 2 as far as possible; if there is the head of minute quantity molten steel infiltrate dummy bar head 1 to flow in slick and sly groove or the fan groove 2; the head that promptly is engraved in dummy bar head 1 forms the protective layer that one deck solidifies and prevents that molten steel from burning out dummy bar head 1; and the molten steel that enters in slick and sly groove or the fan groove 2 also forms the not thick box hat of one deck after solidifying, and follows constantly moving and successfully drawing strand of dummy bar head 1 in the process of setting of continuous casting steel.The head of dummy bar head 1 has AB circle segments or segmental arc, BC straightway and CD circle segments or segmental arc, and (curvature) radius of AB section is R
1, (curvature) radius of CD section is R
2, and R
1≤ R
2Or R
1〉=R
2Form by AB circle segments or segmental arc, BC straight section and CD circle segments or segmental arc because of the head of dummy bar head 1, when continuous casting of molten steel, only form the thin layer solidifying front, can not paste its surface, be easy to take off ingot (base) on its surface.In addition side at dummy bar head 1 head is processed with internal channel 4, and the inner chamber of internal channel 4 has DE circle segments and EF circle segments or segmental arc, has the small amount of molten steel internal channel 4 of bleeding and form thin solidification layer in the continuous casting of molten steel process.Straight shaped end at dummy bar head 1 is processed with circular hole 3, and the straight shaped end of dummy bar head is to have spacing to be the conical head of d, and is easy to assembly.Dummy bar can be linked to each other with dummy bar head 1 through circular hole 3.After treating that continuous casting of molten steel a period of time dummy bar head 1 is through the straightening machine, apply an external force f (as shown in Figure 1), the continuous casting billet head is moved down, can realize that dummy bar head 1 separates smoothly with continuous casting billet, reaches purpose described in the utility model in a certain position of continuous casting billet.
Claims (3)
1, a kind of kinky back type dummy bar head is characterized in that: being processed with slick and sly groove or fan groove (2) between the bottom of dummy bar head (1) tool back plane line and dummy bar head head round wire or curved line, is R in the AB circle segments of dummy bar head (1) or the radius of segmental arc
1, the CD circle segments of dummy bar head (1) or the radius of segmental arc are R
2, internal channel (4) is arranged in the side in addition of dummy bar head (1) head; The straight shaped end of dummy bar head (1) is that back gauge is arranged is the conical head of d.
2, a kind of kinky back type dummy bar head according to claim 1 is characterized in that: the AB circle segments of dummy bar head (1) or the radius R of segmental arc
1Radius R with CD circle segments or segmental arc
2, R
1〉=R
2Or R
1≤ R
2
3, a kind of kinky back type dummy bar head according to claim 1, it is characterized in that: the inner chamber of internal channel (4) has DE circle segments and EF circle segments or segmental arc.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008202109916U CN201333506Y (en) | 2008-12-16 | 2008-12-16 | Back-bending dummy bar head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008202109916U CN201333506Y (en) | 2008-12-16 | 2008-12-16 | Back-bending dummy bar head |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201333506Y true CN201333506Y (en) | 2009-10-28 |
Family
ID=41285148
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008202109916U Expired - Fee Related CN201333506Y (en) | 2008-12-16 | 2008-12-16 | Back-bending dummy bar head |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201333506Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105397046A (en) * | 2015-12-03 | 2016-03-16 | 中冶连铸技术工程有限责任公司 | Round billet dummy ingot device |
-
2008
- 2008-12-16 CN CNU2008202109916U patent/CN201333506Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105397046A (en) * | 2015-12-03 | 2016-03-16 | 中冶连铸技术工程有限责任公司 | Round billet dummy ingot device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20091028 Termination date: 20121216 |