CN106271414B - A kind of preparation method of TMCP types bridge stainless steel clad plate - Google Patents
A kind of preparation method of TMCP types bridge stainless steel clad plate Download PDFInfo
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- CN106271414B CN106271414B CN201610706997.1A CN201610706997A CN106271414B CN 106271414 B CN106271414 B CN 106271414B CN 201610706997 A CN201610706997 A CN 201610706997A CN 106271414 B CN106271414 B CN 106271414B
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- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
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Abstract
The present invention is a kind of preparation method of TMCP types bridge stainless steel clad plate, chosen, be surface-treated by blank, interleaving agent brushing, assembly, electron beam soldering and sealing, heating, rolling, aligning and cutting scoreboard and etc. prepare the bridge stainless steel clad plate of good metallurgical binding.Using the direct soldering and sealing of electron beam, it is more secure processes, the vacuum degree such as to reduce the drilling of traditional handicraft, vacuumize under vacuum chamber environment by the present invention.By TMCP techniques, ensure the good mechanical property of base material bridge steel, being quickly cooled down after rolling, the intergranular that material is covered in control is precipitated, ensure that and cover material good corrosion resistance；Base material designs blank using low-carbon, and prepared composite plate, base material carbon equivalent is low, and welding performance is good, convenient for site operation；In addition, composite plate does not need to be heat-treated, you can obtains good comprehensive performance.
Description
Technical field
The invention belongs to bimetallic composite manufacturing fields, relate in particular to a kind of TMCP types bridge stainless steel double
The preparation method of plywood.
Background technology
At present, the bridge deck of the high-speed railway in China and passenger dedicated railway line steel bridge design uses orthotropic rectangular plates structure
Steel Bridge Deck, easily generate ponding, and then cause the corrosion of bridge floor in ballast tub and bridge floor junction, finally influence railway steel bridge
Service life.Bridge stainless steel clad plate has both the corrosion resistance of coating stainless steel and the obdurability of base material bridge steel,
The etching problem of bridge floor can be just solved on railway deck using stainless steel clad plate.Therefore, bridge stainless steel clad plate
It will gradually be applied on railway steel bridge.
Under normal circumstances, stainless steel clad plate has explosion method and rolling production.Explosion method deposits environment since noise is big
There is pollution, and be affected by weather, be not a kind of sustainable composite plate technology of preparing.Rolling is using high temperature rolling
Mode, make to cover material using interatomic diffusion and base material realize good metallurgical binding, the composite plate of production, plate width can spirit
Adjustment living is a kind of environmentally protective sustainable production technology.Therefore, will be future development using rolling production composite plate
Trend.
At present, bridge industry composite plate, the general stainless steel clad plate of normalizing state delivery prepared using explosion method, should
Based on the main normalized steel plate of base material of composite plate, carbon equivalent is higher, and welding difficulty is big, is unfavorable for site operation；And using vacuum
Rolling produces composite plate, and for existing traditional handicraft mainly by soldering and sealing surrounding, the method vacuumized again that then drills carries out assembly,
Such as patent publication No. CN103639203A《The vacuum packaging method of symmetrical hot rolling manufacture stainless steel clad plate》And patent publication No.
CN104708276A《A kind of preparation method of stainless steel clad plate》Disclosed is exactly to carry out assembly using the method, because the method needs
It drills and vacuumizes again after soldering and sealing, technique is relatively complicated, and is completed mainly by manual operation.Another novel assemble pattern is
Electron beam directly welds assembly under vacuum conditions, eliminates drill after soldering and sealing vacuum, such as patent publication No.
CN102069289A《A kind of preparation method of Stainless Steel-Carbon Steel Clad Sheet》Disclosed is exactly to use electron beam by stainless steel and carbon
Steel directly carries out welding assembly under vacuum conditions, and the method for then reheating rolling prepares composite plate, however the method is not due to
There is very big difference in the coefficient of thermal expansion of rust steel and carbon steel, heating process is easy to make stainless steel and carbon steel because swell increment is different
Bond open, rolling success rate it is less high.
Invention content
The shortcomings that technical problems to be solved by the invention are, overcome the prior art provides a kind of TMCP types bridge with not
The preparation method of rust steel composite board, the bridge steel that base material used is designed for low-carbon by adding strip of paper used for sealing, utilize under vacuum conditions
Electron beam is rolled by strip of paper used for sealing and the mode assembly of base material welding, then through TMCP techniques, and the bridge for preparing good metallurgical binding is used
Stainless steel clad plate efficiently solve the problems, such ass that board substrate carbon equivalent height is not easy to weld, while base process reduces
Drilling such as vacuumizes at the processes, simple for process, and it is high to roll success rate.
The present invention solve more than technical problem technical solution be：
A kind of preparation method of TMCP types bridge stainless steel clad plate, includes the following steps：
(i) blank prepares：According to the steel grade and specification of finished product composite plate, determine base material and cover material blank steel grade and specification；
(ii) it is surface-treated：Grinding process is carried out to base material and the face to be composite for covering material blank, removes the rusty scale of blank surface
And oxide layer, surface is made to be completely exposed fresh metal；
(iii) interleaving agent brushing：Interleaving agent brushing is carried out to covering material non-composite face, ensures that interleaving agent is uniformly brushed and is covering material table
On face, then interleaving agent is dried again；
(iv) blank is combined：The surrounding edge in one piece of base material face to be composite fixes strip of paper used for sealing spot welding wherein, and strip of paper used for sealing height is
Two pieces cover the sum of thickness of material, width 30-60mm；Then material non-composite face is covered by two pieces to overlap, and be placed on strip of paper used for sealing and surround
Slot in, it is then another block of base material is compound down, cover and covered above material at two pieces, it is ensured that upper and lower base material four side with outside strip of paper used for sealing
Side is concordant, forms a composite billet for treating soldering and sealing；
(v) electron beam soldering and sealing：The composite billet organized is sent to vacuum chamber, then to vacuum chamber, treats vacuum chamber vacuum
Degree reaches 10 × 10-2During below Pa, the gap between composite billet strip of paper used for sealing and base material is welded using vacuum electron beam；
(vi) it heats：Composite billet is sent to heating stove heat, for heating temperature at 1100-1250 DEG C, heating total time presses blank
Thickness is with the time control of 9-16min/cm；
(vii) rolling and cooling：It being rolled using TMCP techniques, workpiece thickness is roll overall thickness 1.8-3.0 times,
900-970 DEG C of finish rolling start rolling temperature, 800-900 DEG C of finishing temperature control；It is rolled using big pressure mode, ensures rough rolling step most
Latter percentage pass reduction is more than 20%；Throw steel after rolling at a high speed, composite plate be directly entered ultra-fast cooling device carry out with 2-20 DEG C/
S speed is quickly cooled down, and red temperature is controlled at 550-700 DEG C；
(viii) it aligns：Straightening processing is carried out to the steel plate after rolling, upper cold bed cools down after aligning, treats that surface temperature is down to 300
It can be offline when below DEG C；
(ix) scoreboard is cut：Composite plate is cut using plasma or gas flame cuttiug mode, through cropping, tail and cuts both sides
Afterwards, upper and lower two single side composite plates separation, then straightening processing is carried out to single side composite plate, polish through surface, performance detection, packing
After processing, the stainless steel clad plate product of specification needed for final acquisition.
The technical solution that further limits of the present invention is：
The preparation method of aforementioned TMCP type bridge stainless steel clad plates, wherein step (i) in base material blank steel grade be
The bridge steel designed using low-carbon, chemical composition are by weight percentage：C：0.05%-0.14%, Si：0.1%-0.5%,
Mn：1.0%-1.6%, P≤0.02%, S≤0.01%, Nb：0.010%-0.090%, V≤0.080%, Ti：0.006%-
0.030%, Alt：0.015%-0.050%, Cr≤0.30%, Ni≤0.30%, Cu≤0.30%, surplus for Fe and it is a small amount of not
Evitable impurity.
The preparation method of aforementioned TMCP type bridge stainless steel clad plates, wherein step (i) in, covering material blank steel grade is
Stainless steel, such as S30408, S31603 or 321 stainless steels, ingredient and performance meet corresponding standard requirement.
The preparation method of aforementioned TMCP type bridge stainless steel clad plates, wherein step (v) in electron beam soldering and sealing, envelope
Weld penetration between item and base material is 30-60mm, ensures that the composite billet operation of rolling does not crack to provide enough weld strengths.
The preparation method of aforementioned TMCP type bridge stainless steel clad plates, wherein step (vii) middle operation of rolling rough rolling step
Compression ratio >=2.0, the larger compression ratio of rough rolling process ensures base material and covers the abundant diffusion of atom between material, final to realize
The good metallurgical binding of composite plate；
The preparation method of aforementioned TMCP type bridge stainless steel clad plates, wherein step (ix) in stainless steel clad plate production
Product, overall thickness 5-60mm cover material thickness for 0.5-10mm.
The preparation method of aforementioned TMCP type bridge stainless steel clad plates, wherein step (iv) in strip of paper used for sealing be low-alloy steel
Material, material are suitable with the ingredient and intensity of base material.Compared with prior art, the present invention it has the following advantages：
(1) base material of the present invention uses the bridge steel of low-carbon design, prepared bridge stainless steel clad plate, base material carbon
Equivalent is low, and not preheating directly to weld, convenient for site operation.
(2) the present invention direct under vacuum chamber environment soldering and sealing such as reduces the drilling of traditional handicraft, vacuumizes at processes, the vacuum
Degree is more secure.
(3) the present invention is avoided by strip of paper used for sealing and the composite billet of the welding group of base material because of heating process stainless steel and carbon steel
Swell increment is inconsistent and the problem of cracking.
(4) the present invention ensures the good performance of base material bridge steel by TMCP techniques, while being quickly cooled down after rolling, and controls
The intergranular precipitate of material stainless steel is covered, ensure that the good corrosion resistance for covering material, in addition composite plate does not need to be heat-treated, you can is obtained
Good comprehensive performance.
Description of the drawings
Fig. 1 is the composite plate Interface Microstructure figure of the embodiment of the present invention 2.
Specific embodiment
Embodiment 1
The Q345qD steel grades of the present embodiment selection base material sotck thinkness 96mm, chemical composition are shown in Table 1, and covering material sotck thinkness is
321 stainless steels of 18mm, mill product thickness are the 321+Q345qD composite plates of 3+16mm.
One of surface that two blocks of Q345qD base materials blanks and two piece 321 are covered with material blank is polished, and removes blank
The rusty scale and oxide layer on surface, make surface be completely exposed fresh metal.It does not polish external coating interleaving agent to covering material, it then will be every
It is dried from agent.Strip of paper used for sealing is fixed in the surrounding edge spot welding on surface of having polished one of base material, and strip of paper used for sealing height is 36mm, and width is
45mm；The non-composite face that two pieces cover material is overlapped, is placed in the slot that strip of paper used for sealing surrounds, then another block of base material is compound down,
It covers and is covered above material at two pieces, while ensure that base material four side is concordant with outside strip of paper used for sealing up and down, i.e. composition one treats soldering and sealing in this way
Composite billet.The composite billet organized is sent to vacuum chamber, then to vacuum chamber, treats that vacuum degree in vacuum chamber reaches 4 × 10- 2During Pa, use electron beam by the gap between strip of paper used for sealing and base material weld to get to overall thickness for 228mm composite billets.
Composite billet is sent to stepped heating stove heat, 1200 DEG C of heating temperature, heats total time 230min.Using TMCP
Technique is rolled, workpiece thickness 90mm, finish rolling start rolling temperature≤930 DEG C, 830 DEG C or so of finishing temperature control.Roughing
For last percentage pass reduction of stage 27% or so, final rolling thickness is 38mm, be directly entered after rolling it is ultrafast it is cold be quickly cooled down,
Red temperature is at 650 DEG C or so.Roll the upper cold bed cooling after aligning of rear composite plate, treat surface temperature be down to 300 DEG C it is offline.Through cutting
Head, tail and after cutting both sides, upper and lower two single layer composites separation, then straightening processing is carried out to single layer composite, then to covering material
Surface is polished, the final 321+Q370qD composite board products for obtaining finished product thickness 3+16mm.
Embodiment 2
The Q370qD steel grades of the present embodiment selection base material sotck thinkness 192mm, chemical composition are shown in Table 1, cover material sotck thinkness
For the S31603 stainless steels of 16mm, mill product thickness is the S31603+Q370qD composite plates of 3+36mm.
The one of surface of material blank is covered to two blocks of Q370qD base materials blanks and two pieces of S31603 to polish, and removes blank
The rusty scale and oxide layer on surface, make surface be completely exposed fresh metal.It does not polish external coating interleaving agent to covering material, it then will be every
It is dried from agent.It has polished one of base material the surrounding edge spot welding strip of paper used for sealing on surface, strip of paper used for sealing height is 32mm, and width is
50mm；The non-composite face that two pieces cover material is overlapped, is placed in the slot that strip of paper used for sealing surrounds, then another block of base material is compound down,
It covers and is covered above material and slot at two pieces, it is ensured that upper and lower base material four side is concordant with outside strip of paper used for sealing, and i.e. composition one treats soldering and sealing in this way
Composite billet.The composite billet organized is sent to vacuum chamber, then to vacuum chamber, treats that vacuum degree in vacuum chamber reaches 5 × 10- 2During Pa, use electron beam by the gap between strip of paper used for sealing and base material weld to get to overall thickness for 416mm composite billets.
Composite billet is sent to trolley heating furnace and is heated, 1200 DEG C of heating temperature heats total time 500min.Using TMCP works
Skill is rolled, workpiece thickness 160mm, finish rolling start rolling temperature≤900 DEG C, 830 DEG C or so of finishing temperature control.Roughing rank
For last percentage pass reduction of section 25% or so, final rolling thickness is 78mm, and it is cold that ultrafast cold ACC mode is directly entered after rolling
But, red temperature is at 620 DEG C or so.Roll the upper cold bed cooling after aligning of rear composite plate, treat surface temperature be down to 300 DEG C it is offline.
Again through cropping, tail and after cutting both sides, upper and lower two single layer composites separation, then straightening processing is carried out to single layer composite, then
To covering the polishing of material surface, the final S31603+Q370qD composite board products for obtaining finished product thickness 3+36mm.
The Interface Microstructure figure of composite plate as shown in Figure 1, do not find not tie as figure shows, between stainless steel and bridge steel
Region is closed, composite plate realizes good metallurgical binding.
Embodiment 3
The Q370qE steel grades of the present embodiment selection base material sotck thinkness 107mm, chemical composition are shown in Table 1, cover material sotck thinkness
For the S31603 stainless steels of 16mm, mill product thickness is the S31603+Q370qE composite plates of 3+20mm.
The one of surface of material blank is covered to two blocks of Q370qE base materials blanks and two pieces of S31603 to polish, and removes blank
The rusty scale and oxide layer on surface, make surface be completely exposed fresh metal.It does not polish external coating interleaving agent to covering material, it then will be every
It is dried from agent.It has polished one of base material the surrounding edge spot welding strip of paper used for sealing on surface, strip of paper used for sealing height is 32mm, and width is
40mm；The non-composite face that two pieces cover material is overlapped, is placed in the slot that strip of paper used for sealing surrounds, then another block of base material is compound down,
It covers and is covered above material and slot at two pieces, it is ensured that upper and lower base material four side is concordant with outside strip of paper used for sealing, and i.e. composition one treats soldering and sealing in this way
Composite billet.The composite billet organized is sent to vacuum chamber, then to vacuum chamber, treats that vacuum degree in vacuum chamber reaches 5 × 10- 2During Pa, use electron beam by the gap between strip of paper used for sealing and base material weld to get to overall thickness for 246mm composite billets.
Composite billet is sent to stepped heating stove heat, 1200 DEG C of heating temperature, heats total time 250min.Using TMCP
Technique is rolled, workpiece thickness 96mm, finish rolling start rolling temperature≤910 DEG C, 820 DEG C or so of finishing temperature control.Roughing
For last percentage pass reduction of stage 27% or so, final rolling thickness is 46mm, be directly entered after rolling it is ultrafast it is cold be quickly cooled down,
Red temperature is at 650 DEG C or so.Roll the upper cold bed cooling after aligning of rear composite plate, treat surface temperature be down to 250 DEG C it is offline.Through cutting
Head, tail and after cutting both sides, upper and lower two single layer composites separation, then straightening processing is carried out to single layer composite, then to covering material
Surface is polished, the final S31603+Q370qE composite board products for obtaining finished product thickness 3+20mm.
Embodiment 4
The Q420qE steel grades of the present embodiment selection base material sotck thinkness 60mm, chemical composition are shown in Table 1, and covering material sotck thinkness is
The S30403 stainless steels of 12mm, mill product thickness are the S30403+Q370qE composite plates of 2+10mm.
The one of surface of material blank is covered to two blocks of Q420qE base materials blanks and two pieces of S31603 to polish, and removes blank
The rusty scale and oxide layer on surface, make surface be completely exposed fresh metal.It does not polish external coating interleaving agent to covering material, it then will be every
It is dried from agent.It has polished one of base material the surrounding edge spot welding strip of paper used for sealing on surface, strip of paper used for sealing height is 24mm, and width is
35mm；The non-composite face that two pieces cover material is overlapped, is placed in the slot that strip of paper used for sealing surrounds, then another block of base material is compound down,
It covers and is covered above material and slot at two pieces, it is ensured that upper and lower base material four side is concordant with outside strip of paper used for sealing, and i.e. composition one treats soldering and sealing in this way
Composite billet.The composite billet organized is sent to vacuum chamber, then to vacuum chamber, treats that vacuum degree in vacuum chamber reaches 5 × 10- 2During Pa, use electron beam by the gap between strip of paper used for sealing and base material weld to get to overall thickness for 144mm composite billets.
Composite billet is sent to stepped heating stove heat, 1200 DEG C of heating temperature, heats total time 170min.Using TMCP
Technique is rolled, workpiece thickness 60mm, finish rolling start rolling temperature≤900 DEG C, 820 DEG C or so of finishing temperature control.Roughing
For last percentage pass reduction of stage 28% or so, final rolling thickness is 24mm, and it is cold that ultrafast cold ACC mode is directly entered after rolling
But, red temperature is at 550 DEG C or so.Roll the upper cold bed cooling after aligning of rear composite plate, treat surface temperature be down to 250 DEG C it is offline.
After through cropping, tail and cutting both sides, upper and lower two single layer composites separation, then straightening processing is carried out to single layer composite, it is then right
Cover the polishing of material surface, the final S30403+Q420qE composite board products for obtaining finished product thickness 2+10mm.
The smelting ingredient of 1 steel grade of the embodiment of the present invention of table：
| Embodiment | C | Si | Mn | P | S | Nb | V | Ti | Alt | Cr | Ni | Cu |
| Embodiment 1 | 0.13 | 0.20 | 1.45 | 0.014 | 0.0050 | 0.015 | 0.001 | 0.015 | 0.035 | / | / | / |
| Embodiment 2 | 0.10 | 0.24 | 1.46 | 0.012 | 0.0035 | 0.035 | 0.001 | 0.017 | 0.036 | 0.13 | / | 0.013 |
| Embodiment 3 | 0.095 | 0.25 | 1.48 | 0.012 | 0.0025 | 0.027 | 0.001 | 0.018 | 0.034 | 0.13 | 0.25 | 0.012 |
| Embodiment 4 | 0.075 | 0.28 | 1.52 | 0.012 | 0.0023 | 0.045 | 0.003 | 0.015 | 0.035 | 0.16 | / | 0.015 |
In addition to the implementation, the present invention can also have other embodiment.It is all to use equivalent substitution or equivalent transformation shape
Into technical solution, all fall within the present invention claims protection domain.
Claims (6)
1. a kind of preparation method of TMCP types bridge stainless steel clad plate, it is characterised in that：Include the following steps：
(i) blank prepares：According to the steel grade and specification of finished product composite plate, determine base material and cover material blank steel grade and specification；
(ii) it is surface-treated：Grinding process is carried out to base material and the face to be composite for covering material blank, removes the rusty scale and oxygen of blank surface
Change layer, surface is made to be completely exposed fresh metal；
(iii) interleaving agent brushing：Interleaving agent brushing is carried out to covering material non-composite face, ensures that interleaving agent is uniformly brushed on material surface is covered,
Then interleaving agent is dried again；
(iv) blank is combined：The surrounding edge in one piece of base material face to be composite fixes strip of paper used for sealing spot welding wherein, and strip of paper used for sealing height is two pieces
Cover the sum of thickness of material, width 30-60mm；Then material non-composite face is covered by two pieces to overlap, and be placed on the slot that strip of paper used for sealing surrounds
It is interior then another block of base material is compound down, it covers and is covered above material at two pieces, it is ensured that upper and lower base material four side outside strip of paper used for sealing with putting down
Together, a composite billet for treating soldering and sealing is formed；
(v) electron beam soldering and sealing：The composite billet organized is sent to vacuum chamber, then to vacuum chamber, treats that vacuum degree in vacuum chamber reaches
To 10 × 10-2During below Pa, the gap between composite billet strip of paper used for sealing and base material is welded using vacuum electron beam；
(vi) it heats：Composite billet is sent to heating stove heat, for heating temperature at 1100-1250 DEG C, heating total time presses sotck thinkness
With the time control of 9-16min/cm；
(vii) rolling and cooling：It is rolled using TMCP techniques, workpiece thickness is to roll 1.8-3.0 times of overall thickness, finish rolling
900-970 DEG C of start rolling temperature, 800-900 DEG C of finishing temperature control；Rolled using big pressure mode, ensure rough rolling step last
Percentage pass reduction is more than 20%；Steel is thrown after rolling at a high speed, composite plate is directly entered ultra-fast cooling device and carries out with 2-20 DEG C/s speed
It is quickly cooled down, red temperature is controlled at 550-700 DEG C；
(viii) it aligns：Straightening processing is carried out to the steel plate after rolling, upper cold bed cooling after aligning, treat surface temperature be down to 300 DEG C with
It can be offline when lower；
(ix) scoreboard is cut：Composite plate is cut using plasma or gas flame cuttiug mode, after through cropping, tail and cutting both sides,
Upper and lower two single side composite plates separation, then straightening processing is carried out to single side composite plate, polish through surface, performance detection, at packing
After reason, the stainless steel clad plate product of specification needed for final acquisition.
2. the preparation method of TMCP types bridge stainless steel clad plate as described in claim 1, it is characterised in that：The step
(i) the base material blank steel grade in is the bridge steel designed using low-carbon, and chemical composition is by weight percentage：C：0.05%-
0.14%, Si：0.1%-0.5%, Mn：1.0%-1.6%, P≤0.02%, S≤0.01%, Nb：0.010%-0.090%, V≤
0.080%, Ti：0.006%-0.030%, Alt：0.015%-0.050%, Cr≤0.30%, Ni≤0.30%, Cu≤0.30% are remaining
It measures as Fe and a small amount of inevitable impurity.
3. the preparation method of TMCP types bridge stainless steel clad plate as described in claim 1, it is characterised in that：The step
(i) in, material blank steel grade is covered for stainless steel.
4. the preparation method of TMCP types bridge stainless steel clad plate as described in claim 1, it is characterised in that：The step
(v) the electron beam soldering and sealing in, the weld penetration between strip of paper used for sealing and base material are 30-60mm, are ensured again with providing enough weld strengths
The base operation of rolling is closed not crack.
5. the preparation method of TMCP types bridge stainless steel clad plate as described in claim 1, it is characterised in that：The step
(vii) compression ratio >=2.0 of middle operation of rolling rough rolling step.
6. the preparation method of TMCP types bridge stainless steel clad plate as described in claim 1, it is characterised in that：The step
(ix) the stainless steel clad plate product in, overall thickness 5-60mm cover material thickness for 0.5-10mm.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610706997.1A CN106271414B (en) | 2016-08-23 | 2016-08-23 | A kind of preparation method of TMCP types bridge stainless steel clad plate |
| PCT/CN2017/096606 WO2018036382A1 (en) | 2016-08-23 | 2017-08-09 | Method for preparing stainless steel composite plate for tmcp bridge |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610706997.1A CN106271414B (en) | 2016-08-23 | 2016-08-23 | A kind of preparation method of TMCP types bridge stainless steel clad plate |
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| CN106271414B true CN106271414B (en) | 2018-06-19 |
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| WO2018036382A1 (en) | 2018-03-01 |
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