CN110064823A - A kind of bridge founds the welding method of position Combined Welding with Q690qE high-strength steel - Google Patents
A kind of bridge founds the welding method of position Combined Welding with Q690qE high-strength steel Download PDFInfo
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- CN110064823A CN110064823A CN201910462610.6A CN201910462610A CN110064823A CN 110064823 A CN110064823 A CN 110064823A CN 201910462610 A CN201910462610 A CN 201910462610A CN 110064823 A CN110064823 A CN 110064823A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
- B23K35/22—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by the composition or nature of the material
- B23K35/24—Selection of soldering or welding materials proper
- B23K35/30—Selection of soldering or welding materials proper with the principal constituent melting at less than 1550 degrees C
- B23K35/3053—Fe as the principal constituent
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
- B23K35/22—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by the composition or nature of the material
- B23K35/38—Selection of media, e.g. special atmospheres for surrounding the working area
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K9/00—Arc welding or cutting
- B23K9/16—Arc welding or cutting making use of shielding gas
- B23K9/173—Arc welding or cutting making use of shielding gas and of a consumable electrode
Abstract
The present invention provides a kind of bridge welding methods of the vertical position Combined Welding of Q690qE high-strength steel, and first to welding retaining wall on slope and cleaning when welding, groove type is double V-groove, and bevel angle is 48 ° -52 °；It is assembled again using code plate, in 4-8mm, ceramic substrate is arranged in the back side in gap for the gap control of groove minimum position；Then steel plate is preheating to 70 DEG C -80 DEG C；Prime coat welding is being carried out using solid welding wire full-argon gas shielded arc welding；Then it is filled and cover welding using alkaline flux-cored wire is CO 2 gas-shielded；Heat preservation slow cooling is finally carried out to room temperature using heat-preservation cotton covering.This method welded bridge Q690qE high-strength steel, has that welding quality is good, joint mechanical property is excellent, the higher advantage of welding efficiency.
Description
Technical field
The invention belongs to bridge welding technical fields, and it is multiple in particular, provide a kind of vertical position of bridge Q690qE high strength steel
Close the welding method of weldering.
Background technique
Development of world economy promotes transportation and flourishes, and railway and highway transportation development promote bridge again and build
If development.It is various across river, river, lake, sea, paddy bridge in China's Large scale construction.Compared with the world, China's steel structural bridge
There is also many problems for beam construction material, if armor plate strength rank is relatively low, realize the maximum yield strength of application only at present
500MPa grades, weathering steel application is still in the budding stage, does not adapt to the demand for development of bridge structure lightweight, durability etc..
It is badly in need of making a breakthrough in terms of steel structure bridge construction in China.Chinese bridge industry is due to by design level, material
Manufacture, the limitation of the factors such as matching component, application technology are also very big with the gap of the advanced countries such as America and Japan.Such as America and Japan's bridge steel
Plate highest has reached 690MPa grades using yield strength, and is widely used for weathering steel, wherein no coating weathering steel is using
Occupy quite at high proportion.The use of high-strength bridge steel plate is to realize that steel structure bridge industry in China's quickly upgrades to send out with great-leap-forward
The important symbol of exhibition is the important indicator that China's steel structure bridge industry is in world lead level.
Qi Qiao main bridge in Wuhan Jiang-Han Area is half-through steel truss bowstring arch bridge, and main spanning diameter is arranged as 132+408+132m=
672m.Main truss two sides pier top arch rib lower edge uses Q690qE high strength steel, which is a kind of completely new steel grade, although in engineering
It has been used that, but its ingredient is not disclosed.By the way of welding, it is vertical that there are Q690qE steel loop mouths for connection between bridge location arch rib
Position butt weld.Often solder wire with acidity core is used to weld currently, founding position weld seam using the steel bridge scene being welded to connect, but
There has been no the solder wire with acidity core to match for Q690qE steel, can only be welded or be used solid welding wire richness argon gas using stick electrode
Body protection weldering, but there are certain drawbacks again in above two welding method, such as stick electrode arc welding efficiency bottom, appearance of weld
Difference is unfavorable for the guarantee of duration；Solid welding wire full-argon gas shielded arc welding welds vertical position butt weld easily stomata generation welding and lacks
It falls into, influences weld seam internal soundness.How the vertical position butt weld of Q690qE steel, which welds, is a problem to be solved.
Summary of the invention
That the object of the present invention is to provide a kind of welding qualities is good, joint mechanical property is excellent, welding efficiency is higher
Q690qE steel founds the welding technique of position docking Combined Welding, to solve low efficiency, the welding quality in traditional welding procedure
The problem of difference.
In order to reach the goals above, the present invention is using technical solution:
A kind of bridge founds the welding method of position Combined Welding with Q690qE high-strength steel, in turn includes the following steps:
A. welding groove processing and cleaning: the groove two sides of two pieces of butting steel plates after machining are polished and are cleaned, gold is exposed
Belong to gloss；Groove type is double V-groove, and the bevel angle which forms is 48 ° -52 °；
B. it is assembled using code plate, in 4-8mm, ceramic liner is arranged in the back side in gap for the gap control of groove minimum position
Pad；
C. steel plate is preheating to 70 DEG C -80 DEG C using electromagnetic induction heating pad；
D. prime coat welding is carried out using solid welding wire full-argon gas shielded arc welding；Solid welding wire uses ER76-G, and diameter is
1.2mm, the solid welding wire include the following component of mass percent: C :≤0.1%, Si:0.2-0.60%, Mn:1.4-
1.8%, S :≤0.015%, P :≤0.015%, Cr:0.2-0.6%, Mo:0.3-0.65%, Ni:2-3%, remaining is Fe；It adopts
With solid welding wire full-argon gas shielded arc welding, it is ensured that weld dimensions comprehensive mechanical property prevents layer temperature is excessively high from causing to weld
Tissue deterioration is stitched, filler pass uses multi-layer multi-pass welding；
E. it is filled and cover welding using alkaline flux-cored wire is CO 2 gas-shielded；Weld interpass temperature 140
℃-170℃；Alkaline flux-cored wire uses E690M, diameter 1.4mm, basicity are as follows: 1.5-3.5；Filling in alkaline flux-cored wire
Medicinal powder include the following component of mass percent: C :≤0.1%, Si:0.1-0.3%, Mn:1.5-2.0%, S :≤
0.010%, P :≤0.010%, Cr:0.10-0.50%, Mo:0.4-0.60%, Ni:2-3%, remaining is Fe；Using this alkali
Property flux-cored wire filling capping when, droplet size is big, and transition frequency is small, electric arc activity drift aggravation, and bath temperature is cooling fast, melts
Pond shape is easy to control, and appearance of weld is good；
F. heat preservation slow cooling is carried out to room temperature using heat-preservation cotton covering.
Bridge is a kind of completely new steel grade with Q690qE high-strength steel comprising the following component of mass percent: C:
0.03%-0.08%, Si:0.15%-0.35%, Mn:1.40%-1.50%, P :≤0.015%, S :≤0.006%, Cr:
0.40%-0.65%, Ni:0.65%-0.90%, Mo:0.40%-0.65%, Cu:0.9%-1.20%, Ti:0.01%-
0.014%, Nb:0.01%-0.05%, Al:0.020%-0.050%, V:0.005%-0.009%, surplus Fe.
The intensity of the Q690qE high-strength steel of the component is high, and good toughness is corrosion-resistant, good welding performance.Wherein, carbon is in steel
Effect: it will increase the brittleness of steel when improving steel hardness, intensity, but measuring big, therefore control at C:0.03%~0.08%.Silicon exists
Effect in steel: (1), quenching, normalizing and the annealing temperature of steel are improved, improves steel belt roof bolt stability and inoxidizability.⑵,Si
It can be solid-solution in ferrite and austenite, improve intensity, hardness, elasticity and the wearability of steel.Disadvantage: when Si content is high, meeting
Deteriorate the welding performance of steel.Effect of the manganese in steel: (1), manganese improve steel harden ability.(2), manganese is to raising ordinary low-alloy steel
Intensity have obvious action.The major defect of manganese steel: when higher containing manganese, there is obvious temper brittleness phenomenon；Manganese has promotion
The effect that crystal grain is grown up is overcome by the way that refinement crystal grain element such as molybdenum, vanadium, titanium etc. is added.Effect of the chromium in steel: (1), chromium can
The intensity and hardness and wearability of raising steel.(2), the high-temperature oxidation resistance that can significantly improve steel is added in steel in chromium.(3), significantly
The harden ability for improving steel, improves the anti-temper resistance of steel.(4), graphitization is prevented；Effect of the nickel in steel: (1), steel can be improved
Intensity without significantly reducing its plasticity.(2), nickel can reduce the brittle transition temperature of steel, that is, the low-temperature flexibility of steel can be improved.⑶,
Improve the processability and solderability of steel.(4), the resistance to corrosion of steel can be improved in nickel, can not only be acidproof, and can alkali resistant and big
The corrosion of gas.(5), the harden ability of steel is improved.Effect of the molybdenum in steel: (1), improve steel intensity, ductility, wearability, improve
The toughness of steel.(2), steel heat resistance is improved.(3), Mo can generally improve the corrosion resistance of steel.(4) the harden ability of steel, is improved, is returned
Fiery stability, prevents temper brittleness.Vanadium in steel effect (1), refinement steel tissue and crystal grain；Grain coarsening temperature is improved, from
And reduce the superheated susceptivity of steel.(2), when high temperature dissolves in austenite, the harden ability of steel is increased；Such as exist with carbide form
When, it will but reduce the harden ability of steel.(3), increase the temper resistance of hardened steel, and generate post-curing effect.(4), significantly change
The weldability of kind low-alloy steel.V can refine the as-cast structure of weld metal and reduce the superheated susceptivity of heat affected area, prevent heat
It grows up and is roughened close to the excessive grain of fusing line metal in the zone of influence.Effect of the titanium in steel: titanium can improve the heat resistance of steel, mention
The creep-resistant property and creep rupture strength of Gao Gang.Effect of the niobium in steel (1), niobium and carbon, nitrogen, oxygen have extremely strong binding force,
And corresponding extremely stable compound is formed therewith, thus crystal grain can be refined, reduce the superheated susceptivity and temper brittleness of steel.
(2), fabulous resistant to hydrogen performance is had.(3), niobium can improve the heat resistance of steel.Effect of the aluminium in steel: (1), crystal grain can be refined, inhibited low
The timeliness of carbon steel improves toughness of the steel in low temperature, is especially reduction of the brittle transition temperature of steel；(2), the antioxygen of steel is improved
Change performance.When aluminium and chromium are improved with used time, antioxygenic property is merged.Effect of the copper in steel: copper plays the work of activated cathode
With, promote steel anode to be passivated, thus corrosion can be slowed down.S can lead to steel and " hot-short " phenomenon occurs, and P can lead to steel shape
At " cold short " phenomenon, therefore S, P are control element, are harmful but are inevitable element, content should reduce as far as possible.
Upward welding is stood when bottoming and filling capping, welding gun angle of declination α is in 70 ° of -80 ° of ranges.The certifiable droplet transfer is just
Often, arc stability, weld seam splashing is small, and appearance of weld is good.
When prime coat welds, protective gas is volume ratio 80%Ar and volume ratio 20%CO2, throughput 25-28L/min,
Welding current 140-150A, weldingvoltage 16-18V, weldering speed 60-70mm/min, power supply DC reverse connection, amplitude of oscillation 4-6mm, stem elongation
18mm, heat input 19-26KJ/cm.
When filled layer welds, gas CO2Flow 20-25L/min, welding current 170-190A, weldingvoltage 19-21V, weldering
Fast 90-130mm/min, power supply straight polarity direct current, amplitude of oscillation 4-5mm, stem elongation 18mm, heat input 15-26KJ/cm.
When capping layer welds, gas CO2Flow 20-25L/min, welding current 200-210A, weldingvoltage 22-24V, weldering
Fast 110-140mm/min, power supply straight polarity direct current, amplitude of oscillation 4-5mm, stem elongation 18mm, heat input 19-26KJ/cm.
Compared with prior art, the present invention has the advantage that
(1) the vertical position weld seam backing run of the present invention is welded using solid welding wire full-argon gas shielded arc welding DC reverse connection, Neng Goufang
Only alkaline flux-cored wire deposited metal is directly contacted with ceramic cushion block, leads to weld metal elementary dilution, reduces weld seam mechanical property
Energy.
(2) the vertical position weld cap layer of the present invention and filled layer are welded using alkaline flux-cored wire straight polarity direct current, and appearance of weld is good
It is good, interlayer cleaning work is avoided, and have higher deposition efficiency, the production efficiency greatly improved.
(3) the present invention is welded using alkaline flux-cored wire carbon dioxide gas arc welding, is less prone to stomata, slag inclusion, is mingled with
Equal weld defects, weld seam internal soundness are good.
(4) two kinds of welding materials that the present invention reasonably selects carry out Combined Welding, make seam organization acicular ferrite, hot shadow
It rings district's groups and is woven to bainite, welding point has good tensile strength and low-temperature flexibility, and mechanical property can reach design and mark
Alignment request.
Detailed description of the invention
Fig. 1 is inventive joint groove type schematic diagram.
Fig. 2 is inventive joint joint buildup schematic diagram, and in figure, 1-12 is welding bead serial number.
Specific embodiment
Invention is further described in detail with reference to the accompanying drawings and detailed description.
Embodiment 1
The Q690qE high-strength bridge steel chemical component of use is shown in Table 1, and mechanical property is shown in Table 2.
1 Q690qE high-strength steel base material chemical component of table
2 Q690qE high-strength steel base material mechanical property of table
Use compound welding method welded plate thickness for 32mm, the size for testing steel plate is 32mmx200x600, weld seam slope
Shape of the mouth as one speaks formula is shown in that Fig. 1, backing welding welding material are ER76-G (Φ 1.2), and protective gas is volume ratio 80%Ar and volume ratio 20%
CO2, DC reverse connection, welding equipment is Austria's II 500 type welding machine of Thailand KR；Filling cover welding material is E690M (Φ 1.4), protection
Gas is CO2, straight polarity direct current, welding equipment is II 500 type welding machine of Panasonic KR；Welding sequence are as follows: retaining wall on slope and cleaning, assembling
(gap 4-8mm), preheating, prime coat welding, filled layer welding (multilayer multiple tracks), the welding of capping layer, heat preservation,
It is carried out by following specific steps:
A. welding groove processing and cleaning: the groove two sides of two pieces of butting steel plates after machining are polished and are cleaned, gold is exposed
Belong to gloss；Groove type is double V-groove, and the bevel angle which forms is 50 °；
B. it is assembled using code plate, in 4-8mm, ceramic liner is arranged in the back side in gap for the gap control of groove minimum position
Pad 13；
C. steel plate is preheating to 70 DEG C -80 DEG C using electromagnetic induction heating pad；
D. prime coat welding is carried out using solid welding wire full-argon gas shielded arc welding；Solid welding wire uses ER76-G, and diameter is
1.2mm, solid welding wire include the following component of mass percent: C :≤0.1%, Si:0.2%, Mn:1.8%, S:0.010%,
P:0.008%, Cr:0.2%, Mo:0.65%, Ni:2%, remaining is Fe；When prime coat welds, protective gas is volume ratio
80%Ar and volume ratio 20%CO2, throughput 25-28L/min, welding current 140-150A, weldingvoltage 16-18V, weldering speed
60-70mm/min, power supply DC reverse connection, amplitude of oscillation 4-6mm, stem elongation 18mm, heat input 19-26KJ/cm.
E. it is filled and cover welding using alkaline flux-cored wire is CO 2 gas-shielded；Weld interpass temperature 140
℃-170℃；Alkaline flux-cored wire uses E690M, diameter 1.4mm, basicity are as follows: 1.5-3.5；Filling in alkaline flux-cored wire
Medicinal powder include the following component of mass percent: C:0.1%, Si:0.1%, Mn:2.0%, S:0.005%, P:0.006%,
Cr:0.10%, Mo:0.4%, Ni:3%, remaining is Fe；
When filled layer welds, gas CO2Flow 20-25L/min, welding current 170-190A, weldingvoltage 19-21V, weldering
Fast 90-130mm/min, power supply straight polarity direct current, amplitude of oscillation 4-5mm, stem elongation 18mm, heat input 15-26KJ/cm.
When capping layer welds, gas CO2Flow 20L/min, welding current 210A, weldingvoltage 22-24V, weldering speed
140mm/min, power supply straight polarity direct current, amplitude of oscillation 4-5mm, stem elongation 18mm, heat input 19-26KJ/cm.
F. heat preservation slow cooling is carried out to room temperature using heat-preservation cotton covering.
Joint buildup schematic diagram is shown in Fig. 2.Welding parameter be shown in Table 3 and welding joint mechanical property be shown in Table 4
The welding condition of the present invention of table 3
Embodiment 2
The difference is that, the parameter in welding step has corresponding change with embodiment, specifically carries out as follows:
A. welding groove processing and cleaning: the groove two sides of two pieces of butting steel plates after machining are polished and are cleaned, gold is exposed
Belong to gloss；Groove type is double V-groove, and the bevel angle which forms is 48 °；
B. it is assembled using code plate, in 4-8mm, ceramic liner is arranged in the back side in gap for the gap control of groove minimum position
Pad 13；
C. steel plate is preheating to 70 DEG C -80 DEG C using electromagnetic induction heating pad；
D. prime coat welding is carried out using solid welding wire full-argon gas shielded arc welding；Solid welding wire uses ER76-G, and diameter is
1.2mm, the solid welding wire include the following component of mass percent: C:0.03%, Si:0.60%, Mn:1.8%, S:
0.005%, P:0.005%, Cr:0.2%, Mo:0.65%, Ni:2%, remaining is Fe；When prime coat welds, protective gas is
Volume ratio 80%Ar and volume ratio 20%CO2, throughput 28L/min, welding current 140-150A, weldingvoltage 16-18V, weldering
Fast 60-70mm/min, power supply DC reverse connection, amplitude of oscillation 4-6mm, stem elongation 18mm, heat input 19-22KJ/cm.
E. it is filled and cover welding using alkaline flux-cored wire is CO 2 gas-shielded；Weld interpass temperature 140
℃-170℃；Alkaline flux-cored wire uses E690M, diameter 1.4mm, basicity are as follows: 1.5-3.5；Filling in alkaline flux-cored wire
Medicinal powder include the following component of mass percent: C:0.08%, Si:0.3%, Mn:1.5%, S:0.005%, P:
0.005%, Cr:0.50%, Mo:0.4%, Ni:3%, remaining is Fe；
When filled layer welds, gas CO2Flow 25L/min, welding current 170-190A, weldingvoltage 19-21V, weldering speed
90mm/min, power supply straight polarity direct current, amplitude of oscillation 4-5mm, stem elongation 18mm, heat input 15-26KJ/cm.
When capping layer welds, gas CO2Flow 25L/min, welding current 200A, weldingvoltage 22-24V, weldering speed
110mm/min, power supply straight polarity direct current, amplitude of oscillation 4-5mm, stem elongation 18mm, heat input 19-26KJ/cm.
F. heat preservation slow cooling is carried out to room temperature using heat-preservation cotton covering.
The test piece for welding mechanical property of the present invention of table 4
The present invention stands position butt weld with Q690qE high-strength steel to bridge using the welding method of Combined Welding and welds, and welds
Seam presentation quality is all satisfied the requirement of 4.9.12 in Q/CR 9211-2015, and weld appearance molding is good；Weld seam internal soundness
Meet I grade of level weld seam requirement in Q/CR 9211-2015.Welding point tensile strength, yield strength and elongation after fracture are all larger than mother
Material standard value (GB/T 714-2015), joint flex is not cracked, joint welding and -40 DEG C of heat affected area Charpy-V impact power
>=47J has more rich low-temperature impact deposit, three area maximum hardness HV of welding point10≤380。
To sum up, the present invention founds position weld seam with Q690qE high-strength steel to bridge using Combined Welding and welds, and connects
The molding of head appearance and internal soundness are good, and the mechanical property of welding point can satisfy design and standard (Q/CR 9211-2015)
Requirement.The present invention is stood for Jiang-Han Area Qi Qiao demonstration engineering Q690qE steel bridge position in the welding of position circumferential weld, obtains good weldering
Connect effect.
Embodiment 3
Bridge Q690qE high-strength steel includes the following component of mass percent:
C:0.08%, Si:0.15%, Mn:1.40%%, P:0.01%, S:0.006%, Cr:0.65%, Ni:
0.65%, Mo:0.65%, Cu:0.9%%, Ti:0.014%, Nb:0.01%, Al:0.050%, V:0.005%, surplus are
Fe。
By two pieces of above-mentioned materials, the steel plate of thickness 48mm is welded, and is carried out by following specific steps:
A. welding groove processing and cleaning: the groove two sides of two pieces of butting steel plates after machining are polished and are cleaned, gold is exposed
Belong to gloss；Groove type is double V-groove, and the bevel angle which forms is 52 °；
B. it is assembled using code plate, in 8mm, ceramic liner is arranged in the back side in gap for the gap control of groove minimum position
Pad；
C. steel plate is preheating to 70 DEG C using electromagnetic induction heating pad；
D. prime coat welding is carried out using solid welding wire full-argon gas shielded arc welding；Solid welding wire uses ER76-G, and diameter is
1.2mm, solid welding wire include the following component of mass percent: C:0.05%, Si:0.60%, Mn:1.4%, S:0.01%,
P:0.01%, Cr:0.2%, Mo:0.3%, Ni:2%, remaining is Fe；When prime coat welds, protective gas is volume ratio 80%
Ar and volume ratio 20%CO2, throughput 25L/min, welding current 140A, weldingvoltage 16V, weldering speed 60mm/min, power supply is straight
Stream reversal connection, amplitude of oscillation 4mm, stem elongation 18mm, heat input 19KJ/cm.
E. it is filled and cover welding using alkaline flux-cored wire is CO 2 gas-shielded；Weld interpass temperature 140
℃℃；Alkaline flux-cored wire uses E690M, diameter 1.4mm, basicity are as follows: 1.5；The medicinal powder package filled in alkaline flux-cored wire
Include the following component of mass percent: C:0.1%, Si:0.1%, Mn:1.5%, S:0.010%, P:0.010%, Cr:
0.10%, Mo:0.4%, Ni:2%, remaining is Fe；
When filled layer welds, gas CO2Flow 20L/min, welding current 170A, weldingvoltage 19V, weldering speed 90mm/
Min, power supply straight polarity direct current, amplitude of oscillation 4mm, stem elongation 18mm, heat input 15KJ/cm.
When capping layer welds, gas CO2Flow 20L/min, welding current 200A, weldingvoltage 22V, weldering speed 110mm/
Min, power supply straight polarity direct current, amplitude of oscillation 4mm, stem elongation 18mm, heat input 19KJ/cm.
F. heat preservation slow cooling is carried out to room temperature using heat-preservation cotton covering.
Embodiment 4
With embodiment 3 the difference is that bridge Q690qE high-strength steel includes the following component of mass percent: C:
0.08%, Si:0.15%, Mn:1.50%, P:0.00%, S:0.004%, Cr:0.40%%, Ni:0.90%, Mo:
0.40%, Cu:1.20%, Ti:0.01%, Nb:0.05%, Al:0.020%, V:0.009%, surplus Fe.
The present invention is not limited to the above embodiments, and solid welding wire uses ER76-G, and diameter 1.2mm, solid welding wire can
To include the following component of mass percent: C :≤0.1%, Si:0.2-0.60%, Mn:1.4-1.8%, S :≤0.015%,
P :≤0.015%, Cr:0.2-0.6%, Mo:0.3-0.65%, Ni:2-3%, remaining is Fe.
Alkaline flux-cored wire uses E690M, diameter 1.4mm, basicity are as follows: 1.5-3.5；It is filled in alkaline flux-cored wire
Medicinal powder may include the following component of mass percent: C :≤0.1%, Si:0.1-0.3%, Mn:1.5-2.0%, S :≤
0.010%, P :≤0.010%, Cr:0.10-0.50%, Mo:0.4-0.60%, Ni:2-3%, remaining is Fe.
Bridge is a kind of completely new steel grade with Q690qE high-strength steel comprising the following component of mass percent: C:
0.03%-0.08%, Si:0.15%-0.35%, Mn:1.40%-1.50%, P :≤0.015%, S :≤0.006%, Cr:
0.40%-0.65%, Ni:0.65%-0.90%, Mo:0.40%-0.65%, Cu:0.9%-1.20%, Ti:0.01%-
0.014%, Nb:0.01%-0.05%, Al:0.020%-0.050%, V:0.005%-0.009%, surplus Fe.
Above range value can use its boundary value and intermediate arbitrary value.
The present invention is not limited to the above embodiments, on the basis of technical solution disclosed by the invention, the skill of this field
For art personnel according to disclosed technology contents, one can be made to some of which technical characteristic by not needing creative labor
A little replacements and deformation, these replacements and deformation are within the scope of the invention.
Claims (6)
1. the welding method that a kind of bridge founds position Combined Welding with Q690qE high-strength steel, it is characterised in that in turn include the following steps:
A. welding groove processing and cleaning: the groove two sides of two pieces of butting steel plates after machining are polished and are cleaned, metal light is exposed
Pool；Groove type is double V-groove, and the bevel angle which forms is 48 ° -52 °；
B. it is assembled using code plate, in 4-8mm, ceramic substrate is arranged in the back side in gap for the gap control of groove minimum position；
C. steel plate is preheating to 70 DEG C -80 DEG C using electromagnetic induction heating pad；
D. prime coat welding is carried out using solid welding wire full-argon gas shielded arc welding；Solid welding wire uses ER76-G, and diameter is
1.2mm, the solid welding wire include the following component of mass percent: C :≤0.1%, Si:0.2-0.60%, Mn:1.4-1.8%,
S :≤0.015%, P :≤0.015%, Cr:0.2-0.6%, Mo:0.3-0.65%, Ni:2-3%, remaining is Fe；
E. it is filled and cover welding using alkaline flux-cored wire is CO 2 gas-shielded；140 DEG C of weld interpass temperature-
170℃；Alkaline flux-cored wire uses E690M, diameter 1.4mm, basicity are as follows: 1.5-3.5；The medicine filled in alkaline flux-cored wire
Powder includes the following component of mass percent: C :≤0.1%, Si:0.1-0.3%, Mn:1.5-2.0%, S :≤0.010%, P :≤
0.010%, Cr:0.10-0.50%, Mo:0.4-0.60%, Ni:2-3%, remaining is Fe；
F. heat preservation slow cooling is carried out to room temperature using heat-preservation cotton covering.
2. a kind of bridge according to claim 1 founds the welding method of position Combined Welding with Q690qE high-strength steel, feature exists
In bridge Q690qE high-strength steel include the following component of mass percent: C:0.03%-0.08%, Si:0.15%-0.35%,
Mn:1.40%-1.50%, P :≤0.015%, S :≤0.006%, Cr:0.40%-0.65%, Ni:0.65%-0.90%, Mo:0.40%-
0.65%, Cu:0.9%-1.20%, Ti:0.01%-0.014%, Nb:0.01%-0.05%, Al:0.020%-0.050%, V:
0.005%-0.009%, surplus Fe.
3. a kind of bridge according to claim 1 founds the welding method of position Combined Welding with Q690qE high-strength steel, feature exists
Upward welding is stood when bottoming and filling capping, welding gun angle of declination α is in 70 ° of -80 ° of ranges.
4. a kind of bridge according to claim 1 founds the welding method of position Combined Welding with Q690qE high-strength steel, feature exists
When prime coat welding, protective gas is volume ratio 80%Ar and volume ratio 20%CO2, throughput 25-28L/min, welding current
140-150A, weldingvoltage 16-18V, weldering speed 60-70mm/min, power supply DC reverse connection, amplitude of oscillation 4-6mm, stem elongation 18mm, heat
Input 19-26KJ/cm.
5. a kind of bridge according to claim 1 founds the welding method of position Combined Welding with Q690qE high-strength steel, feature exists
When filled layer welding, gas CO2Flow 20-25L/min, welding current 170-190A, weldingvoltage 19-21V, weldering speed 90-
130mm/min, power supply straight polarity direct current, amplitude of oscillation 4-5mm, stem elongation 18mm, heat input 15-26KJ/cm.
6. a kind of bridge according to claim 1 founds the welding method of position Combined Welding with Q690qE high-strength steel, feature exists
When the welding of capping layer, gas CO2Flow 20-25L/min, welding current 200-210A, weldingvoltage 22-24V, weldering speed 110-
140mm/min, power supply straight polarity direct current, amplitude of oscillation 4-5mm, stem elongation 18mm, heat input 19-26KJ/cm.
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110666297A (en) * | 2019-09-06 | 2020-01-10 | 中铁九桥工程有限公司 | Single-side welding butt joint method for 810 MPa-grade high-performance weather-resistant bridge steel composite weld joint liner |
| CN110722251A (en) * | 2019-09-30 | 2020-01-24 | 浙江高圣钢结构有限公司 | Filling method for gap between steel plates |
| CN110802343A (en) * | 2019-11-12 | 2020-02-18 | 钢铁研究总院 | High-performance weather-resistant welding rod for coating-free weather-resistant bridge steel |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011025298A (en) * | 2009-07-28 | 2011-02-10 | Nippon Steel & Sumikin Welding Co Ltd | Gas shielded arc welding method |
| CN109128550A (en) * | 2018-08-29 | 2019-01-04 | 武汉钢铁有限公司 | A kind of tensile strength Rm>=810MPa bridge steel-gas protective welding method |
| CN109759679A (en) * | 2019-03-22 | 2019-05-17 | 中铁宝桥集团有限公司 | A kind of welding method of Q500qE and Q690qE ultra-low-carbon bainite steel xenogenesis banjo fixing butt jointing |
-
2019
- 2019-05-30 CN CN201910462610.6A patent/CN110064823B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011025298A (en) * | 2009-07-28 | 2011-02-10 | Nippon Steel & Sumikin Welding Co Ltd | Gas shielded arc welding method |
| CN109128550A (en) * | 2018-08-29 | 2019-01-04 | 武汉钢铁有限公司 | A kind of tensile strength Rm>=810MPa bridge steel-gas protective welding method |
| CN109759679A (en) * | 2019-03-22 | 2019-05-17 | 中铁宝桥集团有限公司 | A kind of welding method of Q500qE and Q690qE ultra-low-carbon bainite steel xenogenesis banjo fixing butt jointing |
Non-Patent Citations (3)
| Title |
|---|
| 孔红雨等: "金红石型高强钢无缝药芯焊丝研制", 《金属加工（热加工）》 * |
| 孙壮: "单面焊双面成型的焊接工艺试验", 《中国重型装备》 * |
| 湛宣科 等: "Q690E焊接工艺浅析", 《房地产导报》 * |
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| CN110722251B (en) * | 2019-09-30 | 2021-10-26 | 浙江高圣钢结构有限公司 | Filling method for gap between steel plates |
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