CN86105289A - The double back-push drawing blank technology of horizontal casting - Google Patents
The double back-push drawing blank technology of horizontal casting Download PDFInfo
- Publication number
- CN86105289A CN86105289A CN 86105289 CN86105289A CN86105289A CN 86105289 A CN86105289 A CN 86105289A CN 86105289 CN86105289 CN 86105289 CN 86105289 A CN86105289 A CN 86105289A CN 86105289 A CN86105289 A CN 86105289A
- Authority
- CN
- China
- Prior art keywords
- throwing
- strand
- casting
- pushing away
- cycle
- 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.)
- Pending
Links
Landscapes
- Continuous Casting (AREA)
Abstract
The horizontal casting double back-push drawing blank technology is in the throwing mode of cycle stepping strand to be pulled out from crystallizer, arranges twice anti-push operation in the cycle at each throwing, promptly carries out the throwing method of " drawing-counter pushing away-stop-counter pushing away ".Practice shows that this throwing method has: can in time compensate the strand shrinkage; Strand crystallization forward position is even, and cold shut is shallow, focus thickness is big, eliminates the casting billet surface wrinkle defect substantially; Resistance of billet withdrawal is little; Many casting speed advantages of higher.Improve strand bleedout drawing crack phenomenon effectively, improved cc billet surface quality.
Description
The invention relates to the method for horizontal continuous casting steel machine.
As everyone knows, horizontal casting production is better than the continuous casting production of other form.But, because the tundish of horizontal casting directly is connected with crystallizer, make molten steel be in sealing casting state, thus covering slag and lubricant can't in crystallizer, be added, so that crystallizer inwall and strand easily bond, and the bigger resistance of billet withdrawal of generation.What the ferrostatic pressure that bears because of the initial stage base shell in the horizontal continuous casting crystallizer again will be high than other continuous metal cast process simultaneously is many, therefore, bleedout takes place easily.Drawing crack phenomenon and cause throwing failure.So the throwing method becomes one of key technology of horizontal casting.
In the prior art, the disclosed throwing method of BP GB2105081 is " pull-stop-push-stop " method, and this method generally adopts for the world.Clear 56-11143 of Japan Patent and clear 56-11146 have proposed " pull-stop-push " method and " pushing away-La-stop " method respectively.Their characteristics all are only to adopt once anti-the promotion to do, and in all these methods, add once the anti-purpose done of promoting, and all are the tensions in order to eliminate or to produce when reducing the strand shrinkage, prevent to cast shell and crack.But owing to anti-resistance that pushes away and character are not studied comprehensively, so to improving bleedout drawing crack phenomenon, improving surface quality and also do not obtain very good effect.
In view of above-mentioned problems of the prior art, task of the present invention provides a kind ofly can improve bleedout and drawing crack phenomenon effectively, and improves the horizontal casting throwing method of cc billet surface quality.
The double back-push drawing blank technology of horizontal casting is based on that concrete research and following understanding puts forward:
1. the anti-amount of pushing away just often, anti-thrust drag is based on crystallizer inwall and casting shell frictional force and bonding resistance.
2. instead push away the bonding point of strand and crystallizer inwall that to get loose, thereby reduce resistance of billet withdrawal.
3. counter pushing away can compensate strand shrinkage, minimizing hot tearing.
4. counter pushing away can be pressed " air gap " that rises between initial stage casting shell, minimizing casting shell and the crystallizer inwall, reduces thermal resistance, improves the heat conductivility of crystallizer, thereby can improve pulling rate allowable.
The particular content of this invention is: utilize the throwing parameter flexibly adjustable and can realize the horizontal casting device of no gap transmission, mode with the cycle stepping is pulled out strand from crystallizer, in its each cycle, arrange twice anti-push operation, promptly after " throwing " operation, be right after first " counter pushing away " operation, continuing, it " stops ", carries out " counter pushing away " operation for the second time behind " stopping " certain hour.Wherein the anti-amount of pushing away is less for the first time, its effect is the shrinkage amount in timely compensation " throwing " process, the anti-amount of pushing away is bigger for the second time, its effect is the shrinkage amount of strand during compensation " in stop ", strand is got loose, and on strand, set up and give pressure, to reduce resistance of billet withdrawal and strand tension.Circulation so repeatedly realizes the production of horizontal casting throwing.Concrete billet withdrawal curve of the present invention is referring to accompanying drawing.
Advantage of the present invention is:
1. in time compensate the shrinkage of strand, prevent hot tearing effectively.
2. strand crystallization forward position is even, and cold shut is shallow, and focus thickness is big, eliminates casting billet surface wrinkle defective substantially, has improved cc billet surface quality.
3. resistance of billet withdrawal reduces, and strand is difficult for bleedout.
4. casting speed allowable is improved, can boost productivity.
Accompanying drawing is a horizontal casting double back-push drawing blank rate curve.Now described in detail in conjunction with the accompanying drawings.Among the figure, ordinate is represented casting speed, and positive direction is represented " drawing ", and negative direction is represented " counter pushing away ", and abscissa is represented the throwing time, and coordinate center O dot mark the end in last throwing cycle and the beginning in new throwing cycle.At first be to carry out the drawing operation, its drawing speed is raised to a maximum from zero over time and reduces to zero then again, as curve (1) section.Carry out the anti-push operation first time then, promptly casting speed gets back to zero again by the zero rising that becomes negative direction continuously after an extreme value, as curve (2) section.It is characterized in that the anti-amount of pushing away is little, only play the shrinkage amount of the strand in the compensation process of billet withdrawal.For the first time after counter the pushing away, carry out " in stop " operation, promptly the increase casting speed perseverance along with the time is zero, as curve (3) section.In stop certain hour after, carry out the anti-push operation second time, promptly casting speed rises to negative direction by zero, gets back to zero after an extreme value, as curve (4) section.This second time, the anti-anti-amount of pushing away that pushes away was than the anti-amount of pushing away is big for the first time.Like this, both compensated the shrinkage amount of strand during " in stop ".Casting shell and crystallizer inwall are broken away from, and on strand, set up and give pressure, for later throwing operation has reduced resistance of billet withdrawal and strand tension.This has just finished the whole operations of throwing in the cycle, and begins the operation in next drawing cycle.All these throwing actions all can realize by regulating drawing device and technological parameter thereof.
Claims (1)
1, the throwing method of horizontal casting is in the mode of cycle stepping strand to be pulled out from crystallizer, at its each throwing the operation of drawing, pushing away and stop of certain number of times is arranged all in the cycle.Feature of the present invention is to arrange twice anti-push operation in the cycle at its each throwing, promptly is right after counter pushing away for the first time after dialling drawing, stop among continuing, in stop certain hour after, carry out anti-push operation second time, circulate the production of realization throwing so repeatedly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 86105289 CN86105289A (en) | 1986-08-14 | 1986-08-14 | The double back-push drawing blank technology of horizontal casting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 86105289 CN86105289A (en) | 1986-08-14 | 1986-08-14 | The double back-push drawing blank technology of horizontal casting |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN86105289A true CN86105289A (en) | 1988-03-02 |
Family
ID=4802794
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 86105289 Pending CN86105289A (en) | 1986-08-14 | 1986-08-14 | The double back-push drawing blank technology of horizontal casting |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN86105289A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101879584A (en) * | 2010-07-06 | 2010-11-10 | 宁波金田铜管有限公司 | High-frequency copper tube pulling-casting process |
| CN101972837A (en) * | 2010-09-16 | 2011-02-16 | 宁波金田铜业(集团)股份有限公司 | High-frequency drawing casting method for tin phosphorus bronze |
| CN104498804A (en) * | 2014-12-04 | 2015-04-08 | 北京钢研高纳科技股份有限公司 | Preparation method of high-temperature alloy and high-temperature alloy thereof |
| CN112756569A (en) * | 2020-12-29 | 2021-05-07 | 中天合金技术有限公司 | Horizontal continuous casting mold and method for prolonging service life of horizontal continuous casting mold |
-
1986
- 1986-08-14 CN CN 86105289 patent/CN86105289A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101879584A (en) * | 2010-07-06 | 2010-11-10 | 宁波金田铜管有限公司 | High-frequency copper tube pulling-casting process |
| CN101879584B (en) * | 2010-07-06 | 2012-05-09 | 宁波金田铜管有限公司 | High-frequency copper tube pulling-casting process |
| CN101972837A (en) * | 2010-09-16 | 2011-02-16 | 宁波金田铜业(集团)股份有限公司 | High-frequency drawing casting method for tin phosphorus bronze |
| CN104498804A (en) * | 2014-12-04 | 2015-04-08 | 北京钢研高纳科技股份有限公司 | Preparation method of high-temperature alloy and high-temperature alloy thereof |
| CN112756569A (en) * | 2020-12-29 | 2021-05-07 | 中天合金技术有限公司 | Horizontal continuous casting mold and method for prolonging service life of horizontal continuous casting mold |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109079114B (en) | Method for producing wear-resistant steel by adopting electromagnetic stirring in slab secondary cooling zone | |
| US4073333A (en) | Method of continuous casting of ingots | |
| CN101053895A (en) | Flat blank continuous casting closed-top technology for preventing steel liquid roof-falling | |
| CN109731913A (en) | Method for reducing rolling force of rolling mill of double-roller continuous casting production line | |
| CN101811179A (en) | Magnesium alloy wide plate casting-rolling method | |
| CN86105289A (en) | The double back-push drawing blank technology of horizontal casting | |
| JP4164163B2 (en) | Metal casting mold | |
| CN114130976A (en) | Method for improving center compactness of axle steel large round billet | |
| CN1150070C (en) | Horizontal casting equipment for aluminium alloy flat ingot | |
| KR100406374B1 (en) | Method For Manufacturing Clad Steel Plate Using Strip Caster | |
| CN1048930C (en) | Continuous casting process of subminiature section casting blank | |
| CN85106418A (en) | The band continuous casting process and the equipment thereof of metal, especially steel | |
| CN2489897Y (en) | Crystallizer copper pipe | |
| CN111168021B (en) | Casting process of aluminum alloy round ingot for forging hub | |
| US5305820A (en) | Withdrawal control process of horizontal continuous casting | |
| CN204430223U (en) | The continuous casting production equipment of surface coverage elastomeric material steel and conticaster | |
| CN104525879B (en) | The continuous casting of surface coverage property material steel produces Apparatus and method for | |
| CN109513747A (en) | It is a kind of to prepare difficult deformation sn-bi alloy preformed soldering method | |
| CN111482563B (en) | Continuous casting production method of super-large section special-shaped blank | |
| CN115780756A (en) | Method for reducing incidence rate of pinhole defects of automobile plate | |
| JPS6138739A (en) | Horizontal continuous casting method of metal | |
| CN117549637A (en) | Liquid-solid heat compounding device for compounding metal on surface of steel plate | |
| JP2917733B2 (en) | Continuous casting method and apparatus | |
| JPS5937709B2 (en) | Dummy bar table for continuous casting machine | |
| KR100530103B1 (en) | Mold without Surface Crack in Thin Slab Continuous Caster |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |