CN110180892A - Titanium steel composite board production method - Google Patents
Titanium steel composite board production method Download PDFInfo
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- CN110180892A CN110180892A CN201810485836.3A CN201810485836A CN110180892A CN 110180892 A CN110180892 A CN 110180892A CN 201810485836 A CN201810485836 A CN 201810485836A CN 110180892 A CN110180892 A CN 110180892A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
- B21B1/38—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling sheets of limited length, e.g. folded sheets, superimposed sheets, pack rolling
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B45/00—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
- B21B45/04—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills for de-scaling, e.g. by brushing
- B21B45/08—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills for de-scaling, e.g. by brushing hydraulically
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D1/00—Straightening, restoring form or removing local distortions of sheet metal or specific articles made therefrom; Stretching sheet metal combined with rolling
- B21D1/02—Straightening, restoring form or removing local distortions of sheet metal or specific articles made therefrom; Stretching sheet metal combined with rolling by rollers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
- B21B1/38—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling sheets of limited length, e.g. folded sheets, superimposed sheets, pack rolling
- B21B2001/386—Plates
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Metal Rolling (AREA)
Abstract
The present invention relates to a kind of production method of titanium steel composite board, the production cost for significantly reducing titanium steel composite board declines to a great extent, and has good social benefit.Blank used is Ti plate in upper surface, Q235 is in lower surface, the two is combined with each other by explosion composite method, the thickness proportion of Ti plate and Q235 are as follows: 56 ㎜ of base thickness, wherein 6 ㎜, Q235 plate thickness of Ti plate thickness, 50 ㎜, compound 18 ㎜ of plate thickness of finished product, wherein 2 ㎜, Q235 plate thickness of Ti plate thickness, 16 ㎜, thickness deviation is plus tolerance (0 ,+0.5 ㎜).The titanium steel composite board Rolling Production step are as follows: cold strong-inspection collection-group is hung-of heating-high-pressure water descaling-rolling-thermal straightening-shearing-spray printing-is put in storage.
Description
Technical field
The present invention relates to the milling methods of titanium steel composite board.
Background technique
Titanium is a kind of argenteous transition metal, it is characterized in that it is light-weight, intensity is high, tool metallic luster, also have good
Resistance to corrosion.Due to its stable chemical property, good high temperature resistant, low temperature resistant, anti-strong acid, anti-highly basic, and high-intensitive,
Low-density is known as " space metal ".But its higher operating costs, it is particularly problematic when especially as structure member.For
Use cost is reduced, titanium steel composite board is usually made into.Not only with the corrosion resistance of titanium, and it is strong with general steel plate
Degree, greatly reduces the cost of use.
The manufacturing method of titanium steel composite board mainly include filling metal steel ingot rolling, explosion composite method, rolling crimping,
Welding method etc., industrially frequently with explosion composite method or rolling crimping.Wherein, rolling crimping include again heavy plate rolling method and
Continuously hot rolling method.What explosion composite method usually carried out at normal temperature, environmental pollution is excessively high, is unfavorable for environmental protection.Rolling crimping
Method is by board group dress, heating rolling.The titanium steel composite board that explosion composite method, heavy plate rolling method manufacture is cut deal, continuously hot rolling
The titanium steel composite sheet of method manufacture, is mainly used as the lining of ocean steel structure.
Summary of the invention
The object of the present invention is to provide a kind of production method of titanium steel composite board, the titanium steel composite board for rolling manufacture is
Plate, sotck thinkness 56mm, finished product thickness 18mm, production method meet that environmental pollution is small, cost not by seasonal effect
Low, the features such as production specification and product specification are controllable, is especially suitable for enterprise's batch production, it is important that be greatly reduced use at
This.
The present invention solves the above problems used technical solution are as follows: a kind of titanium steel composite board production method, the titanium steel are multiple
The production blank of plywood is Ti plate in upper surface, and for structural steel in the composite plate of lower surface, Ti plate and structural steel are multiple by exploding
It is combined with each other after legal carry out surface preparation.The thickness proportion of Ti plate and structural steel are as follows: composite plate blanks 56 ㎜ of thickness, wherein Ti
6 ㎜, Q235 plate thickness of plate thickness, 50 ㎜, gained compound 18 ㎜ of plate thickness of finished product after rolling, wherein 2 ㎜, Q235 plate thickness of Ti plate thickness, 16 ㎜, thick
Degree tolerance is plus tolerance: 0~0.5 ㎜.
Elementary production steps are as follows
(1) heat: use four bringing-up sections: preheating section temperature: 600~670 DEG C, a heating degree: 680~750 DEG C, two add
860~890 DEG C of temperature, soaking section temperature: 900~920 DEG C, time inside furnace 2~2.5min/ ㎜ (is ordinary low-alloy steel in furnace
2~2.5 times of time), when time inside furnace is more than 2.5min/mm, then two adduction soaking zones temperature respectively decline 20~
30℃。
Heating uses walking beam furnace, has 4 bringing-up sections, slab is first in low-temperature zone: preheating section and a bringing-up section, slowly
650~720 DEG C are warming up to, 60~70min is heated, two bringing-up sections, 30~40min of heating is then stepped to again, finally in soaking zone
30~50min of soaking, so that surface of steel plate temperature is 880~900 DEG C, to make the temperature difference of entire heating process slab at 20 DEG C
Within, it prevents because the temperature difference causes greatly steel plate discount serious.
(2) high-pressure water descaling；First de-scaling a time, descaling jet drop to corresponding position, de-scaling speed 1.5m/s.
(3) it rolls:
(3.1) deashing work is carried out before rolling；It is rolled using second-level model, production number is virtual number；It is all cold to roll area's closing
But, de-scaling water reduces generation and the steel plate cracking of oxide skin using anhydrous rolling；The water discharging board gap of top working roll and the body of roll
Measured value≤5 ㎜ after pressing prevent curling round the roll.
(3.2) structural steel is extended greater than because of Ti plate, need to guarantees that lower roller diameter is less than 0~3mm of upper roller when with roller, guarantees to roll
Not discount during system.
(3.3) rolling procedure: because the elongation percentage of Ti plate is bigger than structural steel, easily causing discount, using 5 passes, to the greatest extent
A little bigger reduction ratio rolling is measured, setting maximum depression rate is 29%, and minimum reduction ratio, which is calculated, according to rolling procedure model is
11.5%, titanium clad steel plate carries out 5 passes on hot-rolling mill, and each reduction in pass is respectively as follows: 15mm, 12mm, 6mm,
3.5mm, 2.5mm, de-scaling water on closing machine, 5 passages obtain with a thickness of 18mm titanium clad steel plate during the rolling process, 5 passages
Reduction ratio tapers off parabola trend, total reduction 103%, and extreme trace time roll-force restriction >=25000N prevents from increasing passage.
Due to being dual phase steel, the deformation rate of Ti plate and structural steel is also different proportion in single pass, therefore, passage it is more few more
Help to control their precision of respective reduction ratio rolling procedure is needed to accurately calculate, could obtain target overall thickness,
Target Ti plate thickness and object construction steel thickness.
(3.4) 880~900 DEG C of start rolling temperature, using constant ratio convexity milling method, are not being examined by 700 DEG C of finishing temperature >
In the case where considering transversely deforming, but as long as ratio convexity remains constant, the plate shape of steel plate can remain good.
(3.5) thickness control: because of double steel grades rollings, it may appear that thickness act improperly phenomenon, using previous piece of same specification rolling thickness
Degree locking, using calibrator control method, corrects rolling mesh according to the deviation of first piece of thickness and calibrator thickness in kind
Mark thickness.
(4) thermal straightening: because the extension of Ti is big, the plate shape of final finished is whole intermediate bulge, in order to eliminate whole centre
Bulge is aligned, straightening process using the big straightening force of 10000KN or more with negative roller are as follows: after first pair of straightening roll, bending
Become negatively curved, then become positive bending again, in each bending process, curvature is all gradually become smaller, until passing through last
Road straightening roll, curvature become 0, and steel plate flatness is good；
(5) finishing: fixed size scissors are divided into two；Spray printing and side spray (spray printing content: steel plate number, steel grade, contract dimensions),
It does not mark.
Also optionally carried out after finishing process it is cold rectify, but in order to guarantee surface quality, should not use as far as possible
It is cold to rectify.
It checks after collecting, group hangs offline stacking.
Compared with the prior art, the advantages of the present invention are as follows: by setting heating appropriate and uniform heating process, and rolling
Anhydrous rolling is used in the process, it is therefore prevented that the phenomenon that composite plate cracks during the rolling process；Upper roller 0- is less than using fixed lower roll
3mm has been effectively relieved during the rolling process and discount phenomenon has occurred, and substantially reduces the injury to roll；Using calibrator
Thickness and precision is controlled, with plate difference and the control of different plate difference within 0.2mm；Constant ratio convexity milling method, it is ensured that steel plate flatness
Well, the flatness control of slab is within 2mm/m.
Ti plate and Q235 structural steel are combined with each other by the application, and the corrosion resistance of existing titanium has general steel plate as knot again
The intensity of structure object.
For milling method disclosed in the present application compared with the milling method of existing titanium steel composite board, rolling cost is lower.Production
Not by seasonal effect, environmental pollution is small, and the technological process of production is short, and production specification is controllable with product specification, material appearance and surface
High-quality, batch production quality is stablized, massless fluctuation.
Detailed description of the invention
Fig. 1 is heating of plate blank artwork in the embodiment of the present invention；
Fig. 2 is slab rolling regulation figure in the embodiment of the present invention；
Fig. 3 is rolling parameter histogram in the embodiment of the present invention, relates separately to reduction in pass variation, passes power becomes
Change, passage change in torque, wherein left side column is setting value, right side column is actual value, and self study is used in actually control
Control principle, to achieve the purpose that measured value and calculated value are consistent；
Fig. 4 is the product schematic diagram of titanium steel composite board of the embodiment of the present invention.
Specific embodiment
Present invention is further described in detail with reference to embodiments.
The present embodiment is related to a kind of production method of 18mm titanium steel composite board (middle plate), Ti plate in the titanium steel composite board
(99% pure Ti) is compounded in after carrying out surface preparation by explosion composite method in upper surface, Q235 in lower surface, the two
Together, the thickness proportion of Ti plate and Q235 are as follows: base 56 ㎜ of thickness (wherein 6 ㎜, Q235 plate thickness of Ti plate thickness, 50 ㎜) → 18 ㎜ (wherein Ti
2 ㎜, Q235 plate thickness of plate thickness, 16 ㎜), thickness deviation is plus tolerance (0 ,+0.5 ㎜).
The titanium steel composite board Rolling Production step are as follows: heating-high-pressure water descaling-rolling-thermal straightening-shearing-spray printing-is cold
It is strong-to check that collection-group is hung-is put in storage.
One, heat: heating uses walking beam furnace, using four bringing-up sections: preheating section temperature: 600~670 DEG C, one
Heating degree: 680~750 DEG C, two 860~890 DEG C of heating degree, soaking section temperature: 900~920 DEG C, 2~2.5min/ of time inside furnace
㎜.Referring to attached drawing 1, for the beta transus temperature of technical pure Ti between 882~920 DEG C, being more than this temperature range Ti tissue will be thick
Greatly, diffusion velocity of the Fe and C in Ti just will increase, and frangible compounds are just easily formed on interface.Therefore steel billet temperature is generally low
In 900 DEG C, time inside furnace is 2~2.5min/ ㎜ (being 2~2.5 times of general time inside furnace), when heating in practical heating process
Between be 2h, control 900 DEG C of soaking zone furnace gas temperature, control soaking time 25min or more.If other reasons cause the rate of heat addition super
2.5min/mm is crossed, then two adduction soaking zones decline 20~30 DEG C.
Two, it rolls
For titanium steel composite board rolling, the matter of utmost importance for setting control is the design problem of rolling deforming schedule.Mesh
Before, mill condition coefficient is formulated according to knowhow mostly in production scene, acquires reduction ratio distribution according to specification coefficient, then uses
Mathematical model calculating parameter, and show that roll gap, roller speed dispatch control system are set after being checked with equipment and process constraints
Definite value.In order to reduce steel plate discount phenomenon and accurate control Ti plate and the respective deflection of structural steel, practical rolled piece is on milling train
5 passes are carried out, each reduction in pass is 15mm, 12mm, 6mm, 3.5mm, 2.4mm, total reduction 103.08% respectively.
Roll cooling water is closed in the operation of rolling and uses anhydrous rolling, and using first de-scaling, de-scaling does not come into operation on milling train, reduces rolled piece and water
Contact with reduce iron scale generation, also steel plate is avoided to crack.
In addition, reducing the injury to roll to alleviate clad steel discount phenomenon during the rolling process, fixed lower roll is set
Less than upper roller 0-3mm.Thickness and precision is controlled using calibrator, is locked using previous piece of same specification rolling thickness, according to production batch
The deviation of first piece of thickness and calibrator thickness in kind corrects rolling target thickness in secondary, exists with plate difference and the control of different plate difference
Within 0.2mm；Using constant ratio convexity milling method, in the case where not considering transversely deforming, but as long as ratio convexity is always
It remains unchanged, the plate shape of steel plate can remain that well the steel plate flatness of acquisition is good, can be controlled within 2mm/m.
Three, thermal straightening
Because the extension of Ti is big, the plate shape of final finished is that whole intermediate bulge is used using the big straightening force of 10000KN or more
Negative roller aligning, in order to eliminate whole intermediate bulge, other than improving straightening force, straightening process are as follows: pass through first pair of straightening roll
Afterwards, bending becomes negatively curved, then becomes positive bending again, and in each bending process, curvature is all gradually become smaller, until passing through
Last one of straightening roll, curvature become 0, and steel plate flatness is good.
Four, it shears
Fixed size scissors are divided into two；Spray printing and side spray (spray printing content: steel plate number, steel grade, contract dimensions), do not mark.
The corrosion resistance of the existing titanium of the titanium steel composite board obtained by aforementioned production method has general steel plate as works again
Intensity.The good straightness degree of steel plate is produced, presentation quality is high, and the thickness of Ti plate and the thickness of structural steel are controllable in composite plate, can
Realize batch production.
In addition to the implementation, all to use equivalent transformation or equivalent replacement the invention also includes there is an other embodiments
The technical solution that mode is formed should all be fallen within the scope of the hereto appended claims.
Claims (7)
1. a kind of titanium steel composite board production method, it is characterised in that: the production blank of the titanium steel composite board is Ti plate in upper surface,
For structural steel in the composite plate of lower surface, elementary production steps are as follows
(1) it heats: using four bringing-up sections: preheating section temperature: 600~670 DEG C, a heating degree: 680~750 DEG C, two heating degree
860~890 DEG C, soaking section temperature: 900~920 DEG C, time inside furnace 2~2.5min/ ㎜, when time inside furnace is more than 2.5min/
When mm, then the temperature of two adduction soaking zones declines 20~30 DEG C respectively, controls the temperature difference of entire heating process slab at 20 DEG C
Within to inhibit discount serious；
(2) high-pressure water descaling；First de-scaling a time, descaling jet drop to corresponding position, de-scaling speed 1.5m/s；
(3) it rolls: carrying out deashing work before rolling；It is rolled using second-level model, production number is virtual number；It is all cold to roll area's closing
But, de-scaling water, using anhydrous rolling；The water discharging board gap of top working roll and body of roll measured value≤5 ㎜ after pressing, it is pre- anti-tangle
Roller；Structural steel is extended greater than because of Ti plate, need to guarantee that lower roller diameter is less than 0~3mm of upper roller when with roller, guarantee in the operation of rolling not
Discount；It rolls the regulation used: because the elongation percentage ratio Q235 of Ti plate is big, easily causing discount, using 5 passes, as far as possible greatly
Point reduction ratio rolling, setting maximum depression rate are 29%, and it is 11.5% that minimum reduction ratio, which is calculated, according to rolling procedure model,
Titanium clad steel plate carries out 5 passes on hot-rolling mill, and each reduction in pass is respectively as follows: 15mm, 12mm, 6mm, 3.5mm,
2.5mm, de-scaling water on closing machine, 5 passages obtain with a thickness of 18mm titanium clad steel plate, the reduction ratio of 5 passages during the rolling process
Taper off parabola trend, total reduction 103%, and extreme trace time roll-force restriction >=25000N prevents from increasing passage；Start rolling temperature
880~900 DEG C, 700 DEG C of finishing temperature >, using constant ratio convexity milling method；
(4) thermal straightening: because the extension of Ti is big, the plate shape of final finished is whole intermediate bulge, in order to eliminate whole intermediate bulge,
It using the big straightening force of 10000KN or more, is aligned with negative roller, straightening process are as follows: after first pair of straightening roll, bending becomes negative
To bending, then become positive bending again, in each bending process, curvature is all gradually become smaller, and is aligned together until by last
Roller, curvature become 0, and steel plate flatness is good；
(5) finishing.
2. titanium steel composite board production method according to claim 1, it is characterised in that: Ti plate and structural steel are to pass through explosion
Composite algorithm is combined with each other after carrying out surface preparation.
3. titanium steel composite board production method according to claim 1, it is characterised in that: the thickness proportion of Ti plate and structural steel
Are as follows: composite plate blanks 56 ㎜ of thickness, wherein 6 ㎜, Q235 plate thickness of Ti plate thickness, 50 ㎜, compound 18 ㎜ of plate thickness of finished product, wherein 2 ㎜ of Ti plate thickness,
16 ㎜ of Q235 plate thickness, thickness deviation are plus tolerance: 0~0.5 ㎜.
4. titanium steel composite board production method according to claim 3, it is characterised in that: heating uses walking beam furnace,
Have 4 bringing-up sections, slab is first in low-temperature zone: preheating section and a bringing-up section are to slowly warm up to 650~720 DEG C, heat 60-
Then 70min steps to two bringing-up sections heating 30-40min, finally in soaking zone soaking 30-50min, so that surface of steel plate again
Temperature is 880-900 DEG C.
5. titanium steel composite board production method according to claim 1, it is characterised in that: the thickness control in the operation of rolling:
It is locked using previous piece of same specification rolling thickness, using calibrator control method, according to first piece of thickness and calibrator in kind
The deviation of thickness corrects rolling target thickness.
6. titanium steel composite board production method according to claim 1, it is characterised in that: finishing includes: that fixed size scissors one divide and are
Two；Spray printing and side spray, spray printing content: steel plate number, steel grade, contract dimensions do not mark.
7. titanium steel composite board production method according to claim 1, it is characterised in that: after finishing process as required
Cold strong straightening plate shape can be also carried out, but in view of to guarantee surface quality, is rectified as far as possible without using cold.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810485836.3A CN110180892B (en) | 2018-05-21 | 2018-05-21 | Production method of titanium steel composite board |
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| CN201810485836.3A CN110180892B (en) | 2018-05-21 | 2018-05-21 | Production method of titanium steel composite board |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113145666A (en) * | 2021-05-10 | 2021-07-23 | 成都先进金属材料产业技术研究院股份有限公司 | Continuous furnace isothermal heating method for TA titanium and Q235 steel composite plate/coiled stock blank |
| CN113145667A (en) * | 2021-05-10 | 2021-07-23 | 成都先进金属材料产业技术研究院股份有限公司 | Continuous furnace high-temperature heating method for TA titanium and Q235 steel composite board/coiled raw material blank |
| CN113210443A (en) * | 2021-05-10 | 2021-08-06 | 成都先进金属材料产业技术研究院股份有限公司 | Continuous heating method for TA titanium and Q235 steel composite board/coil stock blank |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113145666A (en) * | 2021-05-10 | 2021-07-23 | 成都先进金属材料产业技术研究院股份有限公司 | Continuous furnace isothermal heating method for TA titanium and Q235 steel composite plate/coiled stock blank |
| CN113145667A (en) * | 2021-05-10 | 2021-07-23 | 成都先进金属材料产业技术研究院股份有限公司 | Continuous furnace high-temperature heating method for TA titanium and Q235 steel composite board/coiled raw material blank |
| CN113210443A (en) * | 2021-05-10 | 2021-08-06 | 成都先进金属材料产业技术研究院股份有限公司 | Continuous heating method for TA titanium and Q235 steel composite board/coil stock blank |
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| Publication number | Publication date |
|---|---|
| CN110180892B (en) | 2021-03-16 |
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