CN102031356B - Preparation method of titanium steel composite board reducing end part downwards-buckling during rolling - Google Patents
Preparation method of titanium steel composite board reducing end part downwards-buckling during rolling Download PDFInfo
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- CN102031356B CN102031356B CN 201010607953 CN201010607953A CN102031356B CN 102031356 B CN102031356 B CN 102031356B CN 201010607953 CN201010607953 CN 201010607953 CN 201010607953 A CN201010607953 A CN 201010607953A CN 102031356 B CN102031356 B CN 102031356B
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Abstract
The invention discloses a preparation method of a titanium steel composite board reducing end part downwards-buckling during rolling, comprising the following steps of: before rolling, simultaneously heating an upper surface and a lower surface of an explosion-compounded titanium steel composite board blank at different temperatures, wherein the heating temperature of a titanium surface layer is 800-830DEG C, the heating temperature of a steel surface layer is 900-930DEG C and the heating time is 1-2h; after finishing the heating, uniformly spraying water for 3-10s on the titanium surface layer so as to carry out assistant water cooling before rolling each time when the titanium steel composite board blank is subjected to multiple press-in rolling; and after finishing rolling, obtaining a finished titanium steel composite board by hot straightening treatment. According to the invention, by improving the heating procedure of the titanium steel composite board before rolling and controlling the temperature in the rolling process, the phenomenon that the end part is downwards buckled during rolling is reduced, the titanium steel composite board with accurate size, favorable board shape and high surface quality can be obtained and the rolling efficiency of the composite board is greatly improved.
Description
Technical field
The invention belongs to the titanium alloy rolling technical field, particularly a kind of end preparation method of the titanium steel composite board of button down that reduces when rolling.
Background technology
Because special excellent properties of titanium steel composite board and cost advantage make it be widely used at aspects such as electric power, petrochemical complex, sea water desaltination, shipbuilding, pharmacy.The technical process of blast-roll forming titanium steel composite board mainly comprises: base material heating before compound, rolling with cutting stock, the blast of multiple material, the operations such as anneal after rolling, rolling.
When adopting the rolling titanium steel composite board of four roll reversing rollers, traditional method is: be heated to certain temperature with the process furnace compound titanium steel composite board base that will explode, it is rolling to carry out multi-pass through milling train, rolls out the composition board that meets technical requirements.
But the termination that composition board in the process of hot rolling system, often occurs promptly bends button after through rolling mill roll; Then the frame protect plate that is positioned at the roll back is produced serious bump; Frequent bump repeatedly will cause frame protect plate easily by impact fracture; And then cause rolling interruption, seriously hindered rolling continuous operation.
Summary of the invention
The problem that the present invention solves is to provide a kind of end preparation method of the titanium steel composite board of button down that reduces when rolling, through the improvement and the control of the temperature in the operation of rolling of heating schedule before rolling to titanium steel composite board, has reduced the phenomenon that detain down the end when rolling.
The present invention realizes through following technical scheme:
A kind of end preparation method of the titanium steel composite board of button down that reduces when rolling may further comprise the steps:
1) before rolling, the upper and lower surfaces to the titanium steel composite board base after compound that explodes carries out the heating of differing temps simultaneously: the Heating temperature of titanium upper layer is 800~830 ℃, and the Heating temperature of steel upper layer is 900~930 ℃, and be 1~2h heat-up time;
2) heating is accomplished the titanium steel composite board base is carried out repeatedly pressing when rolling, before being rolled is water 3~10s of 10~30 ℃ to titanium upper layer spray temperature at every turn, assists water-cooled;
3) after the rolling completion, handle the titanium steel composite board that obtains finished product through hot straightening.
Titanium steel composite board base after described blast is compound carries out heating after the surface treatment again.
The Heating temperature of the Heating temperature of described titanium upper layer and steel upper layer differs 100 ℃ at least.
The heating of described titanium steel composite board base is carried out in pusher-type furnace, and the titanium upper layer is distinguished on process furnace and carried out, and the steel upper layer carries out at the process furnace inferior segment.
Said pressure 14~18MPa to titanium upper layer spray water, flow 2000~2800L/min, the number of times of sprinkling are 4~6 times.
The rolling employing reversing mill of described pressing carries out, and the 3~5s that before titanium steel composite board is gone into milling train, sprays water returns time water spray 3~5s, so repeated multiple times in that titanium steel composite board is reverse.
Compared with prior art, the present invention has following beneficial technical effects:
The phenomenon that button impacts frame protect plate under the end that in the existing operation of rolling, exists; Be inconsistent the causing of rate of deformation owing to two-layer sheet material about the composition board: the titanium steel composite board upper strata is that titanium, lower floor are steel; Under same Heating temperature; The rheology speed of upper strata titanium is fast and the rheology speed of lower floor's steel is slow, thereby causes sheet material sheet material end when rolling to occur button phenomenon down repeatedly, and the termination of following button produces seriously to clash into to frame protect plate and causes backplate to rupture.
The present invention at first adopts different temperature to handle the heating before rolling to upper and lower surfaces: the Heating temperature of titanium upper layer is 800~830 ℃; The Heating temperature of steel upper layer is 900~930 ℃; Regulate through Heating temperature and to dwindle composition board levels difference of rheology speed up and down when rolling, to weaken the sheet material phenomenon of kowtowing.And the angle of never destroying material property considers, suitably reduces the Heating temperature of titanium steel composite board and reduces heat-up time, helps protecting the bonding strength and the oxidation that reduces titanium layer of composition board.
To kowtow phenomenon in order further reducing under the termination, the mode that the upper surface water spray carries out water-cooled further to be strengthened upper and lower temperature difference, reduce the rheology velocity contrast that composition board is out of shape up and down to a greater extent in operation of rolling employing.
Through above dwindle the composition board levels when rolling up and down the difference of rheology speed, strengthen the upper and lower temperature difference scheme and obtain satisfied effect; Reduced kowtow under the termination, backplate is by the problem of impact fracture; Obtain the titanium steel composite board that size is accurate, template is good, surface quality is high, greatly improved the rolling efficiency of composition board.
Embodiment
Below in conjunction with concrete embodiment the present invention is done further detailed description, said is to explanation of the present invention rather than qualification.
Embodiment 1 specification is the rolling of 100mm * 2070mm * 1500mm titanium steel composite board:
1) will explode titanium steel composite board base after compound carries out after surfacing handles; Pushing pusher-type furnace heats; The heating and temperature control that is positioned at the composition board upper surface of distinguishing on the process furnace (titanium surface) is 820 ℃; Composition board lower surface (steel surface) temperature that is positioned at the process furnace inferior segment is 920 ℃, and being incubated came out of the stove after 2 hours is rolled;
2) composite plate blanks gets into before the roll of four roller reversible hot milling rolls through the aligning gear centering before the milling train; The dephosphorize by high pressure water shower nozzle was sprayed water for 5 seconds to composition board upper surface (titanium surface) before utilizing milling train again, and water temperature is 15 ℃, pressure 15MPa; Flow 2000L/min begins rolling then; Once more the composition board upper surface is implemented water spray equally when returning and carry out water-cooled when rolling material is reverse, 6 times so repeatedly, accomplish rolling to composition board;
3) after the rolling completion, obtain the titanium steel composite board of finished product through straightening processing.
Embodiment 2 specifications are the rolling of 60mm * 1600mm * 1600mm titanium steel composite board:
1) will explode titanium steel composite board base after compound carries out after surfacing handles; Pushing pusher-type furnace heats; The heating and temperature control that is positioned at the composition board upper surface of distinguishing on the process furnace (titanium surface) is 810 ℃; Composition board lower surface (steel surface) temperature that is positioned at the process furnace inferior segment is 910 ℃, and being incubated came out of the stove after 1.5 hours is rolled;
2) composite plate blanks gets into before the roll of four roller reversible hot milling rolls through the aligning gear centering before the milling train, utilizes before the milling train dephosphorize by high pressure water shower nozzle to 3 seconds of composition board upper surface (titanium surface) water spray again, and water temperature is 10 ℃; Pressure 18MPa; Flow 2800L/min begins rollingly then, once more the composition board upper surface is implemented water spray equally when returning and carries out water-cooled when rolling material is reverse; 4 times so repeatedly, completion is rolling to composition board;
3) after the rolling completion, obtain the titanium steel composite board of finished product through straightening processing.
Embodiment 3 specifications are the rolling of 50mm * 1600mm * 1800mm titanium steel composite board:
1) will explode titanium steel composite board base after compound carries out after surfacing handles; Pushing pusher-type furnace heats; The heating and temperature control that is positioned at the composition board upper surface of distinguishing on the process furnace (titanium surface) is 800 ℃; Composition board lower surface (steel surface) temperature that is positioned at the process furnace inferior segment is 900 ℃, and being incubated came out of the stove after 1.5 hours is rolled;
2) composite plate blanks gets into before the roll of four roller reversible hot milling rolls through the aligning gear centering before the milling train; The dephosphorize by high pressure water shower nozzle was sprayed water for 8 seconds to composition board upper surface (titanium surface) before utilizing milling train again, and water temperature is 10 ℃, pressure 14MPa; Flow 2000L/min begins rolling then; Once more the composition board upper surface is implemented water spray equally when returning and carry out water-cooled when rolling material is reverse, 4 times so repeatedly, accomplish rolling to composition board;
3) after the rolling completion, obtain the titanium steel composite board of finished product through straightening processing.
Embodiment 4 specifications are the rolling of 50mm * 1600mm * 1800mm titanium steel composite board:
1) will explode titanium steel composite board base after compound carries out after surfacing handles; Pushing pusher-type furnace heats; The heating and temperature control that is positioned at the composition board upper surface of distinguishing on the process furnace (titanium surface) is 800 ℃; Composition board lower surface (steel surface) temperature that is positioned at the process furnace inferior segment is 930 ℃, and being incubated came out of the stove after 1 hour is rolled;
2) composite plate blanks gets into before the roll of four roller reversible hot milling rolls through the aligning gear centering before the milling train; The dephosphorize by high pressure water shower nozzle was sprayed water for 10 seconds to composition board upper surface (titanium surface) before utilizing milling train again, and water temperature is 12 ℃, pressure 16MPa; Flow 2500L/min begins rolling then; Once more the composition board upper surface is implemented water spray equally when returning and carry out water-cooled when rolling material is reverse, 5 times so repeatedly, accomplish rolling to composition board;
3) after the rolling completion, obtain the titanium steel composite board of finished product through straightening processing.
Embodiment 5 specifications are the rolling of 60mm * 1600mm * 1600mm titanium steel composite board:
1) will explode titanium steel composite board base after compound carries out after surfacing handles; Pushing pusher-type furnace heats; The heating and temperature control that is positioned at the composition board upper surface of distinguishing on the process furnace (titanium surface) is 805 ℃; Composition board lower surface (steel surface) temperature that is positioned at the process furnace inferior segment is 925 ℃, and being incubated came out of the stove after 1.2 hours is rolled;
2) composite plate blanks gets into before the roll of four roller reversible hot milling rolls through the aligning gear centering before the milling train, utilizes before the milling train dephosphorize by high pressure water shower nozzle to 6 seconds of composition board upper surface (titanium surface) water spray again, and water temperature is 20 ℃; Pressure 16MPa; Flow 2200L/min begins rollingly then, once more the composition board upper surface is implemented water spray equally when returning and carries out water-cooled when rolling material is reverse; 6 times so repeatedly, completion is rolling to composition board;
3) after the rolling completion, obtain the titanium steel composite board of finished product through straightening processing.
Claims (4)
1. the preparation method of the titanium steel composite board that detained down the end when minimizing was rolling is characterized in that, may further comprise the steps:
1) before rolling, the upper and lower surfaces to the titanium steel composite board base after compound that explodes carries out the heating of differing temps simultaneously: the Heating temperature of titanium upper layer is 800~830 ℃, and the Heating temperature of steel upper layer is 900~930 ℃, and be 1~2h heat-up time;
The heating of described titanium steel composite board base is carried out in pusher-type furnace, and the titanium upper layer is distinguished on process furnace and carried out, and the steel upper layer carries out at the process furnace inferior segment;
The Heating temperature of the Heating temperature of described titanium upper layer and steel upper layer differs 100 ℃ at least;
2) heating is accomplished the back titanium steel composite board base is carried out repeatedly pressing when rolling, is water 3~10s of 10~30 ℃ before to titanium upper layer spray temperature be rolled at every turn, assists water-cooled;
3) after the rolling completion, handle the titanium steel composite board that obtains finished product through hot straightening.
2. the preparation method of the titanium steel composite board that detained down the end when minimizing as claimed in claim 1 was rolling is characterized in that, the titanium steel composite board base after described blast is compound carries out heating after the surface treatment again.
3. the preparation method of the titanium steel composite board that detained down the end when minimizing as claimed in claim 1 was rolling is characterized in that, said pressure 14~18MPa to titanium upper layer spray water, and flow 2000~2800L/min, the number of times of sprinkling are 4~6 times.
4. the preparation method of the titanium steel composite board that detained down the end when minimizing as claimed in claim 1 was rolling; It is characterized in that; The rolling employing reversing mill of described pressing carries out; 3~the 5s that before titanium steel composite board is gone into milling train, sprays water is in titanium steel composite board is reverse when returning water spray 3~5s, so repeated multiple times.
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CN102794299B (en) * | 2012-08-22 | 2014-12-31 | 西部钛业有限责任公司 | Rolling method of titanium steel composite board |
CN104308462B (en) * | 2014-08-26 | 2016-10-12 | 西安天力金属复合材料有限公司 | A kind of preparation method of oil gas transport pipeline rustless steel/pipe line steel composite plate |
CN104368600A (en) * | 2014-10-27 | 2015-02-25 | 南京钢铁股份有限公司 | Method for preparing titanium steel cladding board with thin coating |
CN110180892B (en) * | 2018-05-21 | 2021-03-16 | 江阴兴澄特种钢铁有限公司 | Production method of titanium steel composite board |
CN109351774A (en) * | 2018-09-30 | 2019-02-19 | 舞阳钢铁有限责任公司 | A kind of heating rolling method of generous titanium steel composite board |
CN110918646B (en) * | 2019-10-29 | 2021-03-19 | 江苏省沙钢钢铁研究院有限公司 | Composite board rolling method |
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CN1850418A (en) * | 2006-05-11 | 2006-10-25 | 南京润邦金属复合材料有限公司 | Titanium steel composite material defect repair method |
CN101067202A (en) * | 2007-06-01 | 2007-11-07 | 查柏林 | Method for producing titanium steel composite plate |
CN101629912A (en) * | 2009-08-10 | 2010-01-20 | 西部金属材料股份有限公司 | Determination method of reliability of titanium welding seam of titanium steel composite board equipment |
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JPS5310347A (en) * | 1976-07-16 | 1978-01-30 | Asahi Chemical Ind | Method of producing titanium clad steel plate |
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CN1850418A (en) * | 2006-05-11 | 2006-10-25 | 南京润邦金属复合材料有限公司 | Titanium steel composite material defect repair method |
CN101067202A (en) * | 2007-06-01 | 2007-11-07 | 查柏林 | Method for producing titanium steel composite plate |
CN101629912A (en) * | 2009-08-10 | 2010-01-20 | 西部金属材料股份有限公司 | Determination method of reliability of titanium welding seam of titanium steel composite board equipment |
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