CN109692873A - Thin-clad titanium steel composite plate and preparation method thereof - Google Patents
Thin-clad titanium steel composite plate and preparation method thereof Download PDFInfo
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- CN109692873A CN109692873A CN201710983322.6A CN201710983322A CN109692873A CN 109692873 A CN109692873 A CN 109692873A CN 201710983322 A CN201710983322 A CN 201710983322A CN 109692873 A CN109692873 A CN 109692873A
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- 239000002131 composite material Substances 0.000 title claims abstract description 105
- 229910001200 Ferrotitanium Inorganic materials 0.000 title claims abstract description 51
- 238000002360 preparation method Methods 0.000 title claims abstract description 21
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims abstract description 72
- 229910052719 titanium Inorganic materials 0.000 claims abstract description 72
- 239000010936 titanium Substances 0.000 claims abstract description 72
- 239000000463 material Substances 0.000 claims abstract description 54
- 238000005096 rolling process Methods 0.000 claims abstract description 34
- 238000007789 sealing Methods 0.000 claims abstract description 12
- 238000003466 welding Methods 0.000 claims abstract description 10
- 229910000975 Carbon steel Inorganic materials 0.000 claims abstract description 9
- 238000010894 electron beam technology Methods 0.000 claims abstract description 8
- 229910000851 Alloy steel Inorganic materials 0.000 claims abstract description 3
- 239000000758 substrate Substances 0.000 claims description 33
- 150000001875 compounds Chemical class 0.000 claims description 28
- 238000004519 manufacturing process Methods 0.000 claims description 11
- 229910000831 Steel Inorganic materials 0.000 claims description 9
- 238000005253 cladding Methods 0.000 claims description 9
- 239000002994 raw material Substances 0.000 claims description 9
- 239000010959 steel Substances 0.000 claims description 9
- 239000010962 carbon steel Substances 0.000 claims description 8
- 239000003795 chemical substances by application Substances 0.000 claims description 6
- 239000011248 coating agent Substances 0.000 claims description 4
- 238000000576 coating method Methods 0.000 claims description 4
- 238000005516 engineering process Methods 0.000 claims description 4
- 230000004927 fusion Effects 0.000 claims description 4
- 238000003801 milling Methods 0.000 claims description 4
- 230000035515 penetration Effects 0.000 claims description 4
- 238000009749 continuous casting Methods 0.000 claims description 3
- 238000007519 figuring Methods 0.000 claims description 3
- 238000000227 grinding Methods 0.000 claims description 3
- 238000005507 spraying Methods 0.000 claims description 3
- 238000005238 degreasing Methods 0.000 claims description 2
- 239000000284 extract Substances 0.000 claims description 2
- 238000004321 preservation Methods 0.000 claims description 2
- 238000010926 purge Methods 0.000 claims description 2
- 238000002791 soaking Methods 0.000 claims description 2
- 238000009966 trimming Methods 0.000 claims description 2
- 238000004381 surface treatment Methods 0.000 claims 1
- 230000007797 corrosion Effects 0.000 abstract description 4
- 238000005260 corrosion Methods 0.000 abstract description 4
- 238000010438 heat treatment Methods 0.000 abstract description 2
- 238000000926 separation method Methods 0.000 abstract 1
- 238000000034 method Methods 0.000 description 17
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 9
- 230000000694 effects Effects 0.000 description 8
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 6
- 229910052799 carbon Inorganic materials 0.000 description 6
- 229910052751 metal Inorganic materials 0.000 description 6
- 239000002184 metal Substances 0.000 description 6
- 239000012071 phase Substances 0.000 description 6
- 229910052802 copper Inorganic materials 0.000 description 5
- 239000010949 copper Substances 0.000 description 5
- 229910052759 nickel Inorganic materials 0.000 description 5
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 4
- CYKMNKXPYXUVPR-UHFFFAOYSA-N [C].[Ti] Chemical compound [C].[Ti] CYKMNKXPYXUVPR-UHFFFAOYSA-N 0.000 description 3
- 230000007547 defect Effects 0.000 description 3
- 238000004880 explosion Methods 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 238000009792 diffusion process Methods 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 238000010008 shearing Methods 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- 229910052723 transition metal Inorganic materials 0.000 description 2
- 150000003624 transition metals Chemical class 0.000 description 2
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000000994 depressogenic effect Effects 0.000 description 1
- 238000010612 desalination reaction Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 125000004435 hydrogen atom Chemical class [H]* 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- LGRFSURHDFAFJT-UHFFFAOYSA-N phthalic anhydride Chemical compound C1=CC=C2C(=O)OC(=O)C2=C1 LGRFSURHDFAFJT-UHFFFAOYSA-N 0.000 description 1
- 239000011120 plywood Substances 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000013535 sea water Substances 0.000 description 1
Classifications
-
- 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
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C37/00—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
- B21C37/02—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of sheets
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B15/00—Layered products comprising a layer of metal
- B32B15/01—Layered products comprising a layer of metal all layers being exclusively metallic
- B32B15/013—Layered products comprising a layer of metal all layers being exclusively metallic one layer being formed of an iron alloy or steel, another layer being formed of a metal other than iron or aluminium
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
- B32B37/06—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the heating method
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
- B32B37/10—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the pressing technique, e.g. using action of vacuum or fluid pressure
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B38/00—Ancillary operations in connection with laminating processes
- B32B38/16—Drying; Softening; Cleaning
- B32B38/162—Cleaning
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/50—Properties of the layers or laminate having particular mechanical properties
- B32B2307/54—Yield strength; Tensile strength
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/70—Other properties
- B32B2307/714—Inert, i.e. inert to chemical degradation, corrosion
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Pressure Welding/Diffusion-Bonding (AREA)
Abstract
The invention discloses a thin composite titanium steel plate and a preparation method thereof. The composite blank comprises a base material and a titanium composite material, wherein the base material is plain carbon steel or low alloy steel with the C of less than or equal to 0.22 percent; the titanium composite material is industrial pure titanium TA2, the thickness ratio of the base material to the titanium composite material is 10-20, the length and width of the titanium composite material are smaller than those of the base material, and the edge distance between the titanium composite material and four edges of the base material during assembly is 100-150 mm. When assembling, the titanium composite material is positioned in the center, and a separant is sprayed between the two titanium composite materials; heating the composite blank subjected to vacuum electron beam sealing welding to 900-920 ℃, and preserving heat for 1min/mm multiplied by the total thickness of the composite blank, wherein the initial rolling temperature is 880-900 ℃, the single-pass reduction rate is 25-30%, the total reduction rate is more than or equal to 85%, and the final rolling temperature is more than or equal to 800 ℃; and (3) obtaining the composite titanium steel composite plate with the thickness of 3-16 mm after plate separation, wherein the plate width can reach 3m, the thickness of the titanium composite layer is less than or equal to 1mm, and the composite titanium steel composite plate has excellent corrosion resistance and mechanical property.
Description
Technical field
The invention belongs to composite plate preparation technical field, be related specifically to a kind of application vacuum it is compound+rolling technique production
The method of thin compound layer titanium steel composite board.
Background technique
The corrosion resistance that titanium steel composite board had not only had titanium cladding excellent, but also intensity and plasticity with base layer structure steel,
Its economic cost sharp fall compared with titanium plate is the ideal material of corrosion-resistant environmental unit manufacture, in petrochemical industry, system
The fields such as salt, electric power, sea water desalination, ocean engineering are widely applied.
Currently, the method for production titanium steel composite board mainly has 4 kinds: explosion composite method, diffusion composite algorithm, Explosion composite-roll
Preparation method and roll-bonding method.The composite plate of first two technique production, size is smaller, is difficult to meet user's requirement sometimes, due to
The operation operation of big ability milling train, both methods are only used in certain special dimensions, are become what being eliminated occurred in foreign countries
Gesture.Latter two method is able to produce large-sized titanium steel composite board, but the complex procedures of explosion weld and rolling method, influences multiple
The factor of plywood bond strength is more, and energy consumption is big, it is relatively low to pollute environment, lumber recovery, has and is replaced by Direct Rolling method
Trend.In recent years, numerous scholars prepare titanium steel composite board technology for rolling and are studied.
CN105080997A discloses a kind of preparation method of unrepeatered transmission titanium steel composite board, CN104624644A is disclosed
The production method of titanium steel composite board, CN105107841A disclose the preparation method of titanium steel composite board, above three patent document
In be all made of titanium steel direct combination rolling technique carry out titanium steel composite board preparation, preparation process is simple, do not add middle layer, lead to
Higher finishing temperature is crossed, makes a possibility that generating Micro-v oid after interface compound is broken reduction, to make the hole on interface
Minimum is reduced to the negative effect of binding performance.
CN104907332A is disclosed to be disclosed by the production method of the titanium steel composite board of middle layer, CN104907333A of nickel
Disclose using nickel as the high temperature preparation method of the titanium steel composite board of middle layer, CN104826866A the titanium steel using nickel as middle layer
The high temperature rolling method of composite plate, by being inserted into metal appropriate between titanium steel compound interface in above three patent document
Nickel does middle layer, and then prevents the phase counterdiffusion of the elements such as titanium, iron, improves the combination effect at interface, improves product quality.
The paper that Wang Jingzhong, Yan Xuebai, Yan Jingya are delivered in 39-42 pages of the phase of " non-ferrous metal " 2009 volume 61 the 4th
" buffer layer material in titanium-steel composite board production ", CN104998903A are disclosed using copper as the system of middle layer titanium steel composite board
Using copper as the high temperature preparation method and CN104874635A of middle layer titanium steel composite board disclosed in Preparation Method, CN104874636A
It is disclosed using copper as in the preparation method of middle layer high bond strength titanium steel composite board, be all made of using copper as middle layer, prevent titanium
Steel composite board during the preparation process on interface ferrotianium compound generation, while faying face liquid phase being squeezed out using the operation of rolling,
Clean new dough is obtained, to realize the good combination at titanium steel interface.
Although in conclusion having carried out a large amount of research work both at home and abroad in terms of titanium steel composite board preparation and having achieved
Biggish achievement.But in the industrial production that rolling prepares titanium steel composite board, if titanium steel direct combination carries out conventional roll
System, it is larger to the carbon content limitation of substrate in order to avoid then generating a large amount of ferrotianium and titanium carbon frangible compounds in compound interface,
The engineer application of titanium steel composite board can not be significantly limited using the higher carbon steel of mechanical property as substrate；If in titanium, steel
Between the intermediate metals such as Cu, Ni are added, although composite performance is improved, it not only increases production economy cost,
Even more improve process complexity.The higher and higher mechanical property requirements that confrontation corrosive structural material proposes in face of each field,
The technology of preparing for developing a kind of low cost and high performance titanium steel composite board becomes the urgent need in market.
Summary of the invention
Based on above-mentioned the deficiencies in the prior art, the object of the present invention is to provide a kind of high performance thin compound layer titanium steel composite boards
Preparation method, rolling technique is depressed using large thickness ratio example assembly+greatly, using higher carbon content substrate and it is no added other
It is good compound between realization titanium, steel under conditions of intermediate metal, control the extent of reaction between compound interface difference element
With the distribution for generating compound, the composite performance at titanium steel direct combination interface is improved, while also reducing high-performance titanium steel
The economic cost and technical threshold of composite plate production.
It specifically includes:
A kind of thin compound layer titanium steel composite board, is made of base and titanium cladding, wherein base be C content by mass percentage
It is calculated as the straight carbon steel or low-alloy steel of C≤0.22%, titanium cladding is industrial pure titanium TA2；Plate width≤3m of finished product composite plate, thickness
For 3~16mm, wherein titanium cladding thickness≤1mm.
A kind of preparation method of thin compound layer titanium steel composite board, composite plate are rolled by composite billet, and composite billet includes substrate
Material is answered with titanium, substrate is straight carbon steel or low alloyed steel continuous casting base, the intermediate base or plate of C≤0.22% (by mass percentage)
Material, length substrate are 2~4m, and width is 1~3m, with a thickness of 20~100mm；It is industrial pure titanium TA2 plate that the titanium, which answers material, long
Degree is 1.7~3.8m, and width is 0.7~2.8m, with a thickness of 2~10mm.Titanium answers material length and width less than substrate and in composition composite billet
When, the back gauge for the four edges that substrate and titanium answer material is 100~150mm.Specific step is as follows:
(1) it chooses substrate and titanium answers material as assembly raw material.
(2) milling and grinding method is respectively adopted material surface to be contacted is answered to substrate and titanium and be machined out, remove waiting
The rusty scale and oxide layer of contacting surface.
(3) to after processing substrate and titanium answer material surface and carry out degreasing and purge.
(4) titanium is answered material, substrate successively to stack between two parties with upper and lower position, and answers material upper surface spraying interleaving agent in titanium,
Standing and drying, 1~2mm of interleaving agent coating thickness.
(5) by the way of symmetrical assembly, by two groups by treated raw material to being just stacked together, titanium answers material
Occupy center center portion.
(6) gap between two substrates is filled up completely with the rectangle clamp bar with substrate identical component, is formed multiple
Close base.
(7) composite billet is sent into after vacuum chamber extracts vacuum and vacuum electron beam sealing welding is carried out to its surrounding gap, made
Titanium answers material and is in airtight vacuum environment, and vacuum degree is 1.0 × 10-2~4.5 × 10-2Pa；Vacuum electron beam sealing welding it is effective
Fusion penetration is 30~40mm.
(8) by vacuum electron beam sealing welding treated composite blank is heated to 900~920 DEG C of heat preservations, soaking time
It being calculated according to 1mm/min × composite billet overall thickness, start rolling temperature is 880~900 DEG C, and single pass reduction ratio is 25%~30%,
Total reduction >=85%, finishing temperature are 800 DEG C or more, are air-cooled to room temperature.
(9) two blocks of titanium steels with a thickness of 3~16mm are obtained after composite plate after rolling being carried out trimming, scoreboard, figuring of surface
Composite plate, plate width is up to 3m, titanium cladding thickness≤1mm.
Milling is carried out to blank surface to be composite before assembly or grinding is handled, rusty scale and oxide skin(coating) is removed, makes it
It is contacted with each other during rolling with fresh metal, guarantee forms metallurgical bonding between the two, improves bond quality, avoids
Be mingled with, stomata and it is unbonded the defects of.
Substrate and titanium answer material due to material difference, and ess-strain during Rolling compund to each other is inconsistent, cooling
It will form biggish stress collection in the process and neutralize deformation, reduce the Percentage bound and bond quality of compound interface, or even be completely torn apart.
The present invention uses substrate and titanium answer material thickness ratio as 10~20, and titanium answers material length and width and is less than substrate and is with the back gauge of its four edges
On the one hand 100~150mm answers thickness proportion shared by material by limiting titanium, reduce substrate and titanium answers the stress difference between material, separately
On the one hand the rolling bonding power between the effective fusion penetration and homogeneity by increasing the welding of surrounding edge sealing reaches the work for controlling its deformation
With.
Interleaving agent does not answer material with substrate and titanium and reacts and guarantee isolation effect at 1250 DEG C or less.In order to prevent
Two layers of titanium answers material and rolling bonding occurs, and the present invention has carried out interleaving agent spraying, on the one hand coating thickness can be prevented in 1~2mm
The direct contact that two layers of titanium answers material is isolated, on the other hand controls two layers of titanium and answers the gap between material, prevent gap is excessive from causing titanium
Plate vibration.
By the way of symmetrical assembly, the effect that vacuum sealing titanium answers material is not only acted as, the whole of composite billet is also improved
Body thickness and target thickness improve Strip Shape Control effect.Wherein, titanium reacts higher than 400 DEG C of Shi Huiyu oxygen, nitrogen, hydrogen,
And compound interface can also generate vigorous oxidation, using symmetrical assemble pattern, titanium is answered material and is placed in center weld vacuum sealing, is prevented
Titanium and raw material react with atmosphere.Simultaneously as plate shape is not easy to control when rolling is compared with thin gauge sheet metal, Yi Fasheng is stuck up
The defects of song, wave, the present invention are improved rolling thickness, are effectively controlled using the technology of scoreboard after the rolling of symmetrical assembly
The plate shape problem of thin plate.
In order to guarantee that the edge sealing effect of composite billet, the present invention have carried out edge sealing welding using vacuum electron beam welder, weld
Effective fusion penetration is 30~40mm, on the one hand can guarantee the vacuum degree of compound interface, on the other hand can guarantee titanium steel composite billet
It does not crack during the rolling process.
Since when being higher than 920 DEG C β phase transition can occur for titanium, the great increase of the diffusion rate of C seriously reduces plyability
Can, therefore the present invention uses 900~920 DEG C of heating temperatures and 880~900 DEG C of start rolling temperature, controls its phase transition.Meanwhile
In order to improve the composite performance between titanium, steel, the uneven influence generated to composite performance of ferrotianium, titanium carbon compound is reduced,
The present invention using 25%~30% single pass reduction ratio and 85% or more total reduction, and control finishing temperature 800 DEG C with
On, it is further reduced the high-temperature residence time of composite billet, ferrotianium, the titanium carbon compound for generating compound interface are broken, refine, more
It dissipates and is distributed in compound interface, improve the distribution of compound, rolling can be improved and prepare titanium steel composite board to substrate carbon content
Sensibility, improve substrate carbon content, thus achieve the purpose that improve titanium steel composite board mechanical property.
Titanium, iron, carbon can persistently react during the rolling process and to temperature height it is directly proportional, in titanium steel composite rolling
The more big then composite performance of its extent of reaction is lower.Therefore, the present invention is while controlling single pass reduction ratio and total reduction, limit
Determine titanium steel composite board with a thickness of 3~16mm, control the cooling velocity of composite plate, the adjustment interface extent of reaction reaches optimization titanium
The effect of steel composite performance.
The utility model has the advantages that
The composite plate produced according to the above scheme has the advantages that
(1) titanium steel composite board prepared by the present invention, both ensure that the improved corrosion performance of plate single side, and the side TA2 is work
The pure titanium of industry, while structural strength whole and with higher, composite plate tensile strength is up to 475MPa or more, and yield strength can
Up to 365MPa or more, the requirements of the national standard of Q345 rank carbon steel is reached.Suitable for phthalandione Preparation equipment, pressure vessel, pot
Furnace, thermal power station's chimney, nuclear reactor, reservoir, ocean civil structure etc..
(2) assembly of the invention and rolling mill practice effect of rolling are good, it is ensured that metallurgical bonding is formed between TA2 and carbon steel,
Milled sheet shape is good, and without aligning, lumber recovery is up to 85% or more.
(3) titanium steel composite board prepared by the present invention, plate width is big, up to 3m, with a thickness of 3~16mm, and base and cladding
Tissue and performance are stablized, and composite surface Percentage bound is 100%.
(4) it can be realized good combination between titanium, steel without adding transition metal, compound interface excellent in mechanical performance,
Its shear strength reaches 238MPa or more.
Detailed description of the invention
Fig. 1 is TA2/Q345B titanium steel composite board compound interface microstructure, and compound interface is continuous, smooth, pore-free, folder
Miscellaneous, micro-crack and unbonded defect, and exist without bulk TiC brittlement phase.
Specific embodiment
For following embodiment for illustrating the content of present invention, these embodiments are only the general description of the content of present invention,
The content of present invention is not limited.
Table 1 is the practical material and raw material specification of substrate of the embodiment of the present invention；Table 2 is the reality that titanium of the embodiment of the present invention answers material
Border material and raw material specification；Table 3 is the relevant information of composite billet of the embodiment of the present invention；Table 4 be embodiment rolling technological parameter and
Finished product composite plate information；Table 5 is the rolling pattern of the present embodiment；Table 6 is the service check of composite plate of embodiment of the present invention material object
As a result.
The practical material and raw material specification of 1 embodiment substrate blank of table
| Embodiment | Material | C/wt% | Source | Length/m | Width/m | Thickness/mm |
| 1 | Q345B | 0.22 | Intermediate base | 4 | 3 | 60 |
| 2 | Q345E | 0.18 | Plate | 3.6 | 2.8 | 30 |
| 3 | Q345D | 0.16 | Plate | 3.6 | 2.8 | 40 |
| 4 | S355JR | 0.15 | Continuous casting billet | 4 | 3 | 80 |
2 embodiment titanium of table answers the practical material and raw material specification of material
| Embodiment | Material | Source | Length/m | Width/m | Thickness/mm |
| 1 | TA2 | Plate | 3.8 | 2.8 | 6 |
| 2 | TA2 | Plate | 3.4 | 2.6 | 3 |
| 3 | TA2 | Plate | 3.4 | 2.6 | 3 |
| 4 | TA2 | Plate | 3.7 | 2.7 | 6 |
3 embodiment composite billet relevant information of table
4 embodiment rolling technological parameter of table and finished product composite plate information
5 the present embodiment rolling pattern of table
6 embodiment composite plate material object of table and service check result
Note: wherein shear strength numerical value is that pulling force conversion shearing surface intensity, titanium steel composite board are cut when sample fails in table
It cuts performance to execute in strict accordance with national standard, but sample is broken in titanium layer base material, it may be said that the shearing of bright compound interface
Intensity is greater than the experimental examination intensity.
By embodiment as it can be seen that the preparation method of thin compound layer titanium steel composite board according to the present invention, the titanium steel composite board of production,
Tensile strength is 476~488MPa, and yield strength is 369~375MPa, and elongation >=27%, shear strength >=236MPa is curved
Song is examined qualified.The good combination between titanium and higher carbon content carbon steel, phase are realized under conditions of no transition metal adds
It closes mechanical property and is all satisfied national titanium steel composite board R1 grade standard.
Claims (3)
1. a kind of thin compound layer titanium steel composite board, which is characterized in that composite plate is made of base and titanium cladding, wherein base contains for C
Amount is the straight carbon steel or low-alloy steel of C≤0.22% by mass percentage, and titanium cladding is industrial pure titanium TA2；Finished product composite plate
Plate width≤3m, with a thickness of 3~16mm, wherein titanium cladding thickness≤1mm.
2. a kind of preparation method of thin compound layer titanium steel composite board, composite plate are rolled by composite billet, production technology includes surface
Processing, composite billet assembly, vacuum welding, rolling, scoreboard and figuring of surface, it is characterised in that:
(1) it chooses substrate and titanium answers material as composite billet raw material；Wherein, the substrate be by mass percentage C≤
0.22% straight carbon steel or low alloyed steel continuous casting base, intermediate base, plate, length are 2~4m, and width is 1~3m, with a thickness of 20~
100mm；It is industrial pure titanium TA2 plate that titanium, which answers material, and length is 1.7~3.8m, and width is 0.7~2.8m, with a thickness of 2~10mm；
It is 10~20 that substrate and titanium, which answer material thickness ratio, and the length and width that titanium answers material is less than substrate and when forming composite billet, and substrate and titanium answer material
Four edges back gauge be 100~150mm；
(2) material surface to be contacted is answered to substrate and titanium to be surface-treated；
(3) to after processing substrate and titanium answer material surface and carry out degreasing and purge；
(4) titanium is answered material, substrate successively to stack between two parties with upper and lower position, and answers material upper surface spraying interleaving agent in titanium, stood
Dry, the coating thickness of the interleaving agent is 1~2mm；
(5) by the way of symmetrical assembly, by two groups by treated raw material to being just stacked together, titanium is answered material and is occupied just
Central part；
(6) gap between two substrates is filled up completely with the rectangle clamp bar with substrate identical component, forms composite billet；
(7) composite billet is sent into after vacuum chamber extracts vacuum and carries out vacuum electron beam sealing welding, so that titanium is answered material and be in closed true
Altitude, vacuum degree are 1.0 × 10-2~4.5 × 10-2Pa；Effective fusion penetration of vacuum electron beam sealing welding is 30~40mm；
(8) by treated composite billet is heated to 900~920 DEG C of heat preservations of vacuum electron beam sealing welding, soaking time according to
1mm/min × composite billet overall thickness calculates, and start rolling temperature is 880~900 DEG C, and single pass reduction ratio is 25%~30%, stagnation pressure
Lower rate >=85%, finishing temperature are 800 DEG C or more, are air-cooled to room temperature；
(9) two pieces of titanium steel composite boards are obtained after composite plate after rolling being carried out trimming, scoreboard, figuring of surface.
3. a kind of preparation method of thin compound layer titanium steel composite board as claimed in claim 2, it is characterised in that: the surface treatment
Mode be milling+grinding.
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