CN109664047A - A kind of welding wire for the protection weldering of not preheating gas - Google Patents
A kind of welding wire for the protection weldering of not preheating gas Download PDFInfo
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- CN109664047A CN109664047A CN201811550299.2A CN201811550299A CN109664047A CN 109664047 A CN109664047 A CN 109664047A CN 201811550299 A CN201811550299 A CN 201811550299A CN 109664047 A CN109664047 A CN 109664047A
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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
- B23K35/3073—Fe as the principal constituent with Mn as next major constituent
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Abstract
The present invention provides a kind of welding wire for the protection weldering of not preheating gas, is made of the element of following mass percent: Mn:1.65-1.8%；Ni:1.32-1.4%；Cr:0.013-0.022%；Mo:0.44-0.52%；Ti:0.06-0.14%；Si:0.65-0.75%；C:0.051-0.09%；P :≤0.009%；S :≤0.006%；Cu≤0.006%；Surplus is Fe.The present invention furthermore provides purposes and its welding procedure of the above-mentioned welding wire in not preheating gas protection weld plate.This kind of welding wire provided by the invention, being applied to controlled rolling and controlled cooling type (TMCP) high strength steel plate, preheating gas is protected in welding, can satisfy the indices of Q690 welded steel as every mechanical property of welding point.
Description
Technical field
The invention belongs to the technical fields of welding material, are related to a kind of welding wire for the protection weldering of not preheating gas, specifically
It is related to one kind to be used between controlled rolling and controlled cooling type (TMCP) high strength steel plate under a shielding gas meet yield strength under not preheated weld
690MPa grades of solid welding wire.
Background technique
With the exploitation and popularization of China's low-alloy high-strength, the application range of high-strength steel is gradually expanded.The weldering of high-strength steel
Connecing processing is the key that influence workpiece to have comprehensive performance, and the crackle tendency of welding point is the major issue in high-strength steel welding
One of.Traditional quenching and tempering type high-strength steel generallys use weld preheating in welding, keeps the temperature in welding process and the measures such as postheating
The generation of cold crack is prevented, this reduces the production efficiencys of high-strength steel welding, increase process complexity and the labor of welder
Fatigue resistance；With steel production technology progress, especially TMCP technique high-strength steel production in it is commonly used, high-strength steel can
Weldering property is significantly improved, compared with equality strength rank tradition quenching and tempering type high-strength steel, using the height of TMCP technique production
Strong steel carbon content and carbon equivalent are greatly lowered, and not preheated weld may be implemented in the high-strength steel sheet of some specification kinds, but
It is the particularity due to welding production process, weld metal performance cannot be improved by controlled rolling and controlled cooling process, Strengthening and Toughening is still
It needs to realize by alloying, thus causes the cracking resistance of weld metal not as good as base material, the cold crack of welding point is often
It all originates or appears in weld metal, weld metal becomes the weak area of welding point.Therefore exploitation not preheated weld
Welding wire is just of great significance to high-strength steel welding production.
Document at present about high-strength steel preheating-free welding is more, but is mostly realized based on welding procedure with inventing or discussing
High-strength steel preheating-free welding process carries out the welding process of not preheated weld high strength steel seldom based on wlding.Such as patent
102513662 A of CN discloses a kind of Q690 grades of steel not preheated weld technique；103231155 A of patent CN discloses a kind of easy
The high powerful not pre- hot weld welding procedure of thickness steel plate of welding；105057849 B of patent CN discloses a kind of 1100MPa grades of hot rolling
Ultra-high-strength/tenacity steel non-prewarming welding method；ZL200610070181 and ZL200910019599 patent application discloses
" the not preheated weld technique of 800MPa high-strength steel " and " 900MPa high-strength steel preheating-free combined welding method " etc. are with Welder
High-strength steel preheating-free welding process is realized based on skill." low-alloy high-strength steel does not preheat tissue ladder to 102179602 A of patent CN
Degree matching welding procedure " is the progress high-strength steel preheating-free welding based on wlding, but it uses HCr20Ni10Mn7Mo stainless
Steel welding wire backing welding, not only wlding is at high cost, but also further relates to different-metal material welding bring composition of weld line structural heterogenity
And the new problems such as welding residual stress increase.
Summary of the invention
In view of the foregoing deficiencies of prior art, it is protected the purpose of the present invention is to provide a kind of for not preheating gas
The welding wire of weldering can be applied between controlled rolling and controlled cooling type (TMCP) high strength steel plate in preheating gas protection welding, for overcoming
The prior art cannot from wlding solution never preheating gas protection welding high-strength steel problem, realization carried out not based on wlding
The solid welding wire for meeting 690MPa grades of yield strength of preheating gas protection weld high strength steel.
In order to achieve the above objects and other related objects, first aspect present invention provides a kind of for the protection of not preheating gas
The welding wire of weldering is made of the element of following mass percent: Mn (manganese): 1.65-1.8%；Ni (nickel): 1.32-1.4%；Cr
(chromium): 0.013-0.022%；Mo (molybdenum): 0.44-0.52%；Ti (titanium): 0.06-0.14%；Si (silicon): 0.65-0.75%；C
(carbon): 0.051-0.09%；P (phosphorus) :≤0.009%；S (sulphur) :≤0.006%；Cu (copper)≤0.006%；Surplus is Fe
(iron).
Preferably, the welding wire for the protection weldering of not preheating gas, is made of the element of following mass percent: Mn:
1.70-1.75%；Ni:1.32-1.35%；Cr:0.013-0.016%；Mo:0.44-0.47%；Ti:0.11-0.14%；Si:
0.65-0.69%；C:0.051-0.065%；P :≤0.009%；S :≤0.006%；Cu :≤0.006%；Surplus is Fe.
It is highly preferred that the welding wire for the protection weldering of not preheating gas, is made of the element of following mass percent:
Mn:1.71-1.74%；Ni:1.32-1.34%；Cr:0.013-0.015%；Mo:0.44-0.45%；Ti:0.11-0.13%；
Si:0.65-0.68%；C:0.052-0.062%；P :≤0.009%；S :≤0.006%；Cu :≤0.006%；Surplus is Fe.
Preferably, the welding wire for the protection weldering of not preheating gas, is made of the element of following mass percent: Mn:
1.75-1.80%；Ni:1.35-1.38%；Cr:0.019-0.022%；Mo:0.47-0.49%；Ti:0.09-0.11%；Si:
0.69-0.71%；C:0.065-0.076%；P :≤0.009%；S :≤0.006%；Cu :≤0.006%；Surplus is Fe.
It is highly preferred that the welding wire for the protection weldering of not preheating gas, is made of the element of following mass percent:
Mn:1.76-1.79%；Ni:1.36-1.38%；Cr:0.020-0.022%；Mo:0.47-0.49%；Ti:0.09-0.11；
Si:0.69-0.71%；C:0.066-0.072%；P :≤0.009%；S :≤0.006%；Cu :≤0.006%；Surplus is Fe.
Preferably, the welding wire for the protection weldering of not preheating gas, is made of the element of following mass percent: Mn:
1.65-1.70%；Ni:1.38-1.40%；Cr:0.016-0.019%；Mo:0.49-0.52%；Ti:0.06-0.09%；Si:
0.71-0.75%；C:0.076-0.09%；P :≤0.009%；S :≤0.006%；Cu :≤0.006%；Surplus is Fe.
It is highly preferred that the welding wire for the protection weldering of not preheating gas, is made of the element of following mass percent:
Mn:1.67-1.70%；Ni:1.38-1.39%；Cr:0.016-0.018%；Mo:0.49-0.51%；Ti:0.07-0.09%；
Si:0.71-0.74%；C:0.078-0.088%；P :≤0.009%；S :≤0.006%；Cu :≤0.006%；Surplus is Fe.
Above-mentioned element refers to play performance in the welding wire for the protection weldering of not preheating gas or need to control and contain
The element of amount does not include content pettiness and inevitable impurity in the welding wire for the protection weldering of preheating gas in the element
Element.
In the present invention by test it is found that Mn (manganese) element can effectively improve the intensity of the welding wire, Mn can expand
Austenitic area facilitates the transformation of martensite and bainite, to improve the intensity of weld metal, meanwhile, Mn is also deoxidant element,
The redox reaction for facilitating weld metal reduces the oxygen content of weld metal.
In the present invention by testing it is found that Ni (nickel) element is most important alloying element in the welding wire, Ni is in weld seam
In can toughening weld metal matrix, reduce weld seam to the sensibility of notch, enhance the drag for being formed and being extended to crackle.This hair
It is bright that the content of Ni is suitably increased by reduction C content, thus while realizing not preheated weld, and guarantee that weld metal should have
Toughness and tenacity.
In the present invention by test it is found that Cr (chromium) element is to increase the heat-resisting important conjunction of wlding high temperature resistant in the welding wire
Gold element, Cr can significantly improve the harden ability of weld metal and improve the intensity of weld metal, but excessively high Cr content can reduce
The low-temperature impact toughness of weld metal.
In the present invention by testing it is found that Mo (molybdenum) element is main intensified element in the welding wire, Mo is in low C condition
Under, it is remarkably improved the intensity of weld seam.
In the present invention by test it is found that Ti (titanium) element is as deoxidant element, with microalloying member in the welding wire
Element is added, on the one hand being capable of thinning weld metal structure, raising weld strength and toughness；On the other hand welding can also be reduced to fly
It splashes, improves the use craftsmanship of welding wire.
In the present invention by test it is found that Si (silicon) element is main deoxidant element, Si in weld metal in the welding wire
Combine with Mn, Ti and carry out deoxidation, reduces weld seam oxygen content, while the addition of Si can improve the intensity of weld metal, but excessively high
Si content can reduce the low-temperature impact toughness of weld metal.
In the present invention by test it is found that C (carbon) element is the main member for increasing weld seam cold cracking sensitivity in the welding wire
Element, while C is also the intensified element in the welding wire, has the function of improving weld strength, under the conditions of low C, C content cannot mistake
Low, otherwise weld strength can reduce.
Weld Performance is made it is found that P (phosphorus) element will increase the cold brittleness of steel in the welding wire by test in the present invention
Decline, needs its content of strict control.
In the present invention by test it is found that S (sulphur) element can make steel generate red brittleness in the welding wire, reduction steel is solderable
Property, be the main reason for causing weld seam hot tearing, while S content increase also reduces the toughness of weld metal, therefore S content need it is tight
Lattice control.
Pass through in the present invention and test the element it is found that Cu (copper) is expansion austenitic area, does not form carbide, copper with carbon
The harden ability and fatigue resistance that weld metal can be improved, it is similar to nickel in the effect for improving weld metal solution strengthening, it can be used to
Instead of a part of nickel.
Second aspect of the present invention provides purposes of the above-mentioned welding wire in not preheating gas protection weld plate.
Preferably, the purposes be the welding wire between weld plate as the purposes of welding point.
It is highly preferred that the welding wire is between weld plate as yield strength >=690MPa of welding point.
It is highly preferred that the welding wire is between weld plate as tensile strength >=770MPa of welding point.
It is highly preferred that the welding wire is between weld plate as elongation >=14% of welding point.
Preferably, the metal plate is controlled rolling and controlled cooling type (TMCP) high strength steel plate.
It is furthermore preferred that yield strength >=690MPa of controlled rolling and controlled cooling type (TMCP) high strength steel plate, tensile strength >=
770MPa, elongation >=14%.
It is highly preferred that thickness≤30mm of controlled rolling and controlled cooling type (TMCP) high strength steel plate.
Third aspect present invention provides a kind of welding procedure of welding wire for the protection weldering of not preheating gas, by above-mentioned welding wire
Not preheated weld metal plate is carried out under a shielding gas.The protective gas is conventional use of protective gas, can be from the market
Purchase obtains.
Preferably, the protective gas is carbon dioxide (CO2) and argon gas (Ar) mixed gas.
It is further preferred that the protective gas presses volume percentage, including following components:
Carbon dioxide 15-25%；
Argon gas 75-85%.
Most preferably, the protective gas presses volume percentage, including following components:
Carbon dioxide 20%；
Argon gas 80%.
Preferably, the condition of the not preheated weld are as follows: welding current (I): 250-280A；Arc voltage (U): 24-
28V；Speed of welding (V): 320-420mm.Min-1；Temperature between road: 135-145 DEG C.
As described above, a kind of welding wire for the protection weldering of not preheating gas provided by the invention, is matched using preferred welding wire
Side and welding procedure match protective gas, can be applied between controlled rolling and controlled cooling type (TMCP) high strength steel plate as connecing
Head compared with prior art, have the advantages that in not preheated weld
(1) a kind of welding wire for the protection weldering of not preheating gas provided by the invention, the component formula of welding wire has low
Carbon, low nickel, a small amount of Mo, Cr, Ti can still ensure that weld metal in the case where addition precious metal element on a small quantity
High-intensitive, high low-temperature flexibility and reduction notch realizes not preheated weld to the sensibility of high temperature under severe conditions.
(2) a kind of welding wire for the protection weldering of not preheating gas provided by the invention, can eliminate weld preheating, improve
The case where welding procedure efficiency, especially field construction；Reduce labor intensity and production cost.
(3) a kind of welding wire for the protection weldering of not preheating gas provided by the invention, the welding point after being welded
Every mechanical property can satisfy the indices of Q690 welded steel, yield strength >=690MPa, tensile strength >=
770MPa, elongation >=14%.
Detailed description of the invention
Fig. 1 is shown as the deposited metals micro-organization chart of welding.
Fig. 2 is shown as weld schematic diagram, wherein number 1~12 refers to welding passage.
Fig. 3 is shown as connector hardness test distribution map, wherein A: weld seam surface area；B: root of weld region；C: weldering
Stitch lower surface area.
Fig. 4 is shown as the real figure that small iron grinds experimental result.
Fig. 5 is shown as the real figure of banjo fixing butt jointing rigid restraint weld cracking expreiment.
Specific embodiment
The present invention is further explained combined with specific embodiments below, it should be appreciated that these embodiments are merely to illustrate the present invention
Rather than it limits the scope of the invention.
Illustrate embodiments of the present invention below by way of specific specific example, those skilled in the art can be by this specification
Other advantages and efficacy of the present invention can be easily understood for disclosed content.The present invention can also pass through in addition different specific realities
The mode of applying is embodied or practiced, the various details in this specification can also based on different viewpoints and application, without departing from
Various modifications or alterations are carried out under spirit of the invention.
It should be clear that in the following example not specifically dated process equipment or device be all made of conventional equipment in the art or
Device；All pressure values and range all refer to relative pressure.
In addition, it should also be understood that, one or more method and step mentioned in the present invention does not repel before and after the combination step
It can also be inserted into other methods step there may also be other methods step or between these explicitly mentioned steps, unless separately
It is described；It should also be understood that the combination connection relationship between one or more equipment/device mentioned in the present invention is not repelled
The two equipment/devices specifically mentioned before and after the unit equipment/device there may also be other equipment/device or at these it
Between can also be inserted into other equipment/device, unless otherwise indicated.Moreover, unless otherwise indicated, the number of various method steps is only
Identify the convenient tool of various method steps, rather than for the arrangement order of limitation various method steps or limits the enforceable model of the present invention
It encloses, relativeness is altered or modified, and without material changes in technical content, when being also considered as, the present invention is enforceable
Scope.
Embodiment 1
The mass percent of element in the welding wire provided according to the present invention, it is raw according to original wlding after element is mixed
Normal process steps in production. art successively carry out desulfurizing iron dephosphorization, converter smelting, molten steel furnace external refining, continuous casting, high line, wire rod
Original wlding is obtained after rolling, further according to the normal process steps in preparation technology of welding wire, original wlding is successively carried out offline pickling,
Drawing, copper facing, layer around it is rear obtain institute required to not preheating gas protection weld welding wire sample 1#-7#.It is protected for not preheating gas
The mass percent for protecting element in the welding wire sample 1#-7# of weldering see the table below 1.
Welding wire sample composition (Wt%) in 1 embodiment of table for the protection weldering of not preheating gas
Embodiment 2
The welding wire sample 1#-7# of not preheating gas protection weldering will be used in embodiment 1 respectively in 20%CO2+ 80%Ar group
At protective gas under carry out not preheated weld metal plate.Wherein, the not condition of preheated weld are as follows: welding current (I): 250-
280A；Arc voltage (U): 24-28V；Speed of welding (V): 320-420mm.Min-1；Temperature between road: 135-145 DEG C.Metal plate
For 30mm or less thickness controlled rolling and controlled cooling type (TMCP) high strength steel plate.It provides to carry out deposited metal mechanics by GB/T8110-2008 again
Performance test, experimental result are shown in Table 2, Fig. 1.
Deposited metal mechanical property of the table 2 for the welding wire of not preheating gas protection weldering
By table 2, Fig. 1 it is found that the deposited metal of the welding wire for the protection weldering of not preheating gas prepared in the present invention is microcosmic
Tissue distribution is uniform, moderate strength, modeling, good-toughness, and every mechanical property of deposited metal can satisfy to 30mm or less thickness
The indices of controlled rolling and controlled cooling type (TMCP) high strength steel plate welding are spent, yield strength can reach 690MPa or more.
Embodiment 3
It will be used for the welding wire sample 4# of not preheating gas protection weldering in embodiment 1, matches 20%CO2+ 80%Ar protects gas
Body, carries out welding point experiment, and the connector refers between the interface of two blocks of steel plates docking with the portion of wire melting filling connection
Position.Wherein, the distribution of welding passage is carried out by Fig. 2 mode, not the condition of preheated weld are as follows: welding current (I): 250-280A；Electricity
Arc voltage (U): 24-28V；Speed of welding (V): 320-420mm.Min-1；Temperature between road: 135-145 DEG C.GB/ is pressed in experiment
T2651-2008, GB/T2654-2008 are carried out, and the results are shown in Table 3,4, Fig. 3.
The experiment of 3 welding joint mechanical property of table
4 joint location hardness determination of table
By table 3,4, Fig. 3 it is found that the welding wire for the protection weldering of preheating gas prepared in the present invention carry out welding to
The connector of formation, every mechanical property can satisfy to the welding of 30mm or less thickness controlled rolling and controlled cooling type (TMCP) high strength steel plate
Indices, tensile strength >=770MPa.
Embodiment 4
It will be used for the welding wire sample 5# of not preheating gas protection weldering in embodiment 1, matches 20%CO2+ 80%Ar protects gas
Body, for welding between two blocks of 25mm thickness Q690CFD steel plates, the Q690CFD is the steel produced using controlled rolling and controlled cooling type technique
Plate, yield strength are controlled in >=690MPa, tensile strength >=770MPa, elongation >=14%." tiltedly according to standard GB4675.1
Y type cut weld cracking expreiment method " regulation, carry out oblique Y groove welding crack test under 28 DEG C of room temperature not preheating condition
(small iron grinds experiment).Wherein, the not condition of preheated weld are as follows: welding current (I): 260A；Arc voltage (U): 24V；Welding speed
Spend (V): 330mm.Min-1.Test specimen postwelding is placed 48 hours, and surface, section crack inspection are carried out.Inspection result is shown in Table 5 and Fig. 4.
The small iron of table 5 grinds experimental result
| Number | Preheating temperature (DEG C) | Face crack rate (%) | Section crack rate (%) | Average crack rate (%) |
| 1 | Do not preheat (28 DEG C) | 0 | 0 | 0 |
| 2 | Do not preheat (28 DEG C) | 0 | 0 | 0 |
By table 5, Fig. 4 it is found that the welding wire and 25mm thickness Q690CFD steel plate that prepare in the present invention are under room temperature not preheating condition
Welding, small iron grinds the face crack rate of test and section crack rate is zero, and not preheated weld may be implemented.
Embodiment 5
It will be used for the welding wire sample 4# of not preheating gas protection weldering in embodiment 1, matches 20%CO2+ 80%Ar protects gas
Body, for welding between two blocks of 25mm thickness Q690CFD steel plates, according to standard GB/T13817, " welding of banjo fixing butt jointing rigid restraint is split
Line test method " regulation, banjo fixing butt jointing rigid restraint weld cracking expreiment is carried out under 27 DEG C of room temperature not preheating condition.Its
In, the not condition of preheated weld are as follows: welding current (I): 250A；Arc voltage (U): 25.5V；Speed of welding (V):
330mm.Min-1.Experimental result is shown in Table 6, Fig. 5.
6 banjo fixing butt jointing rigid restraint weld cracking expreiment result of table
| No. | Preheating temperature (DEG C) | Face crack rate (%) | Section crack rate (%) | Average crack rate (%) |
| 1 | Do not preheat (27 DEG C) | 0 | 0 | 0 |
By table 6, Fig. 5 it is found that the welding wire and 25mm thickness Q690CFD steel plate that prepare in the present invention are under room temperature not preheating condition
Welding, the face crack rate and section crack rate of banjo fixing butt jointing rigid restraint weld cracking expreiment are zero.Test result shows:
25mm thickness Q690CFD steel uses welding wire of the invention under 80%Ar+20%CO2 gas shielded arc welding, in harsher contained item
Under part, not preheated weld may be implemented.
Embodiment 6
It will be used for the welding wire sample 4# of not preheating gas protection weldering in embodiment 1, matches 20%CO2+ 80%Ar protects gas
Body, for welding between two blocks of 20mm thickness Q690CFD steel plates, according to standard GB4675.5, " welding heat affected zone maximum hardness is tried
Proved recipe method " regulation, under room temperature not preheating condition into carry out welding heat affected zone maximum hardness test.Wherein, not pre- hot weld
The condition connect are as follows: welding current (I): 278A；Arc voltage (U): 28V；Speed of welding (V): 330mm.Min-1.Test plate (panel) postwelding is put
It sets 12 hours, workhardness sample, and carries out Hv (10) measurement as shown in Figure 3.Test result is shown in Table 7.
As shown in Table 7, it is welded under room temperature not preheating condition, two pieces of Q690CFD steel plate heat affected area maximum hardness difference
For Hvmax=275 and Hvmax=273.Test result shows that Q690CFD steel plate welding heat affected zone tendency of hardenability is little.
7 welding heat affected zone maximum hardness test result of table
In conclusion this kind of welding wire provided by the invention, it is high-strength to be applied to 30mm or less thickness controlled rolling and controlled cooling type (TMCP)
Steel plate in preheated weld, not can satisfy the indices of Q690 welded steel as every mechanical property of welding point.Institute
With the present invention effectively overcomes various shortcoming in the prior art and has high industrial utilization value.
The above-described embodiments merely illustrate the principles and effects of the present invention, and is not intended to limit the present invention.It is any ripe
The personage for knowing this technology all without departing from the spirit and scope of the present invention, carries out modifications and changes to above-described embodiment.Cause
This, institute is complete without departing from the spirit and technical ideas disclosed in the present invention by those of ordinary skill in the art such as
At all equivalent modifications or change, should be covered by the claims of the present invention.
Claims (10)
1. a kind of welding wire is made of the element of following mass percent:
Mn:1.65-1.8%；Ni:1.32-1.4%；Cr:0.013-0.022%；Mo:0.44-0.52%；Ti:0.06-
0.14%；Si:0.65-0.75%；C:0.051-0.09%；P :≤0.009%；S :≤0.006%；Cu≤0.006%；Surplus
For Fe (iron).
2. a kind of welding wire according to claim 1, which is characterized in that the element of welding wire composition it is optionally following first,
1) Mn:1.70-1.75%；Ni:1.32-1.35%；Cr:0.013-0.016%；Mo:0.44-0.47%；Ti:0.11-
0.14%；Si:0.65-0.69%；C:0.051-0.065%；P :≤0.009%；S :≤0.006%；Cu :≤0.006%；It is remaining
Amount is Fe；
2) Mn:1.75-1.80%；Ni:1.35-1.38%；Cr:0.019-0.022%；Mo:0.47-0.49%；Ti:0.09-
0.11%；Si:0.69-0.71%；C:0.065-0.076%；P :≤0.009%；S :≤0.006%；Cu :≤0.006%；It is remaining
Amount is Fe；
3) Mn:1.65-1.70%；Ni:1.38-1.40%；Cr:0.016-0.019%；Mo:0.49-0.52%；Ti:0.06-
0.09%；Si:0.71-0.75%；C:0.076-0.09%；P :≤0.009%；S :≤0.006%；Cu :≤0.006%；It is remaining
Amount is Fe.
3. a kind of purposes of the welding wire according to claim 1 to 2 in not preheating gas protection weld plate.
4. purposes according to claim 3, which is characterized in that the purposes is that the welding wire is made between weld plate
For the purposes of welding point.
5. purposes according to claim 4, which is characterized in that the welding wire is used as welding point between weld plate
Yield strength >=690MPa.
6. purposes according to claim 3, which is characterized in that the metal plate is controlled rolling and controlled cooling type high strength steel plate.
7. a kind of welding procedure of welding wire carries out welding wire according to claim 1 to 2 not pre- under a shielding gas
Thermal weld metal plate.
8. a kind of welding procedure of welding wire according to claim 7, which is characterized in that the protective gas is carbon dioxide
With the mixed gas of argon gas.
9. a kind of welding procedure of welding wire according to claim 8, which is characterized in that the protective gas presses volume basis
Than meter, including following components: carbon dioxide 15-25%；Argon gas 75-85%.
10. a kind of welding procedure of welding wire according to claim 7, which is characterized in that the condition of the not preheated weld
Are as follows: welding current: 250-280A；Arc voltage: 24-28V；Speed of welding: 320-420mm.Min-1；Temperature between road: 135-145
℃。
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811092827 | 2018-09-17 | ||
| CN2018110928274 | 2018-09-17 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109664047A true CN109664047A (en) | 2019-04-23 |
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| CN201811550299.2A Withdrawn CN109664047A (en) | 2018-09-17 | 2018-12-18 | A kind of welding wire for the protection weldering of not preheating gas |
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| CN101722382A (en) * | 2008-10-22 | 2010-06-09 | 宝山钢铁股份有限公司 | High-strength welding wires of gas shielded welding needing thermal refining after welding |
| CN102294554A (en) * | 2010-06-22 | 2011-12-28 | 宝山钢铁股份有限公司 | 80kg grade gas shielded welding wire with high impact property at 40 DEG C below zero and wire rod |
| CN102528318A (en) * | 2010-12-17 | 2012-07-04 | 鞍钢股份有限公司 | Gas-shielded welding wire for nuclear power |
| CN102689104A (en) * | 2012-05-24 | 2012-09-26 | 宝山钢铁股份有限公司 | Gas shielded welding wire and wire rod for nuclear containment |
| CN103317216A (en) * | 2013-07-08 | 2013-09-25 | 武汉钢铁(集团)公司 | Gas-shield butt welding method for engineering structural steel of tension-resisting strength >/=650MPa |
| CN104551441A (en) * | 2014-11-27 | 2015-04-29 | 宝山钢铁股份有限公司 | Ultrahigh-strength gas protection welding wire containing V and manufacturing method thereof |
| CN104607819A (en) * | 2014-11-27 | 2015-05-13 | 宝山钢铁股份有限公司 | Ultrahigh strength gas protection welding wire and manufacturing method thereof |
| CN103862193B (en) * | 2014-02-21 | 2016-10-05 | 宝山钢铁股份有限公司 | A kind of high-strength and high ductility pipe line steel reality core gas protecting welding wire |
| CN108015450A (en) * | 2017-11-30 | 2018-05-11 | 钢铁研究总院 | One kind is used for reactor supporting structure steel gas shield welding wire |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101722382A (en) * | 2008-10-22 | 2010-06-09 | 宝山钢铁股份有限公司 | High-strength welding wires of gas shielded welding needing thermal refining after welding |
| CN102294554A (en) * | 2010-06-22 | 2011-12-28 | 宝山钢铁股份有限公司 | 80kg grade gas shielded welding wire with high impact property at 40 DEG C below zero and wire rod |
| CN102528318A (en) * | 2010-12-17 | 2012-07-04 | 鞍钢股份有限公司 | Gas-shielded welding wire for nuclear power |
| CN102689104A (en) * | 2012-05-24 | 2012-09-26 | 宝山钢铁股份有限公司 | Gas shielded welding wire and wire rod for nuclear containment |
| CN103317216A (en) * | 2013-07-08 | 2013-09-25 | 武汉钢铁(集团)公司 | Gas-shield butt welding method for engineering structural steel of tension-resisting strength >/=650MPa |
| CN103862193B (en) * | 2014-02-21 | 2016-10-05 | 宝山钢铁股份有限公司 | A kind of high-strength and high ductility pipe line steel reality core gas protecting welding wire |
| CN104551441A (en) * | 2014-11-27 | 2015-04-29 | 宝山钢铁股份有限公司 | Ultrahigh-strength gas protection welding wire containing V and manufacturing method thereof |
| CN104607819A (en) * | 2014-11-27 | 2015-05-13 | 宝山钢铁股份有限公司 | Ultrahigh strength gas protection welding wire and manufacturing method thereof |
| CN108015450A (en) * | 2017-11-30 | 2018-05-11 | 钢铁研究总院 | One kind is used for reactor supporting structure steel gas shield welding wire |
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Effective date of registration: 20200528 Address after: 200941 Shanghai city Baoshan District Baoquan Road No. 1 Applicant after: MCC BAOSTEEL TECHNOLOGY SERVICES Co.,Ltd. Address before: Suzhou City, Jiangsu province 215333, Kunshan Development Zone, South Street Applicant before: KUNSHAN MCC BAOSTEEL WELDING CONSUMABLES Co.,Ltd. |
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Application publication date: 20190423 |