CN105290645B - A kind of welding rod for high-strength steel welding and its preparation method and application - Google Patents
A kind of welding rod for high-strength steel welding and its preparation method and application Download PDFInfo
- Publication number
- CN105290645B CN105290645B CN201510727883.0A CN201510727883A CN105290645B CN 105290645 B CN105290645 B CN 105290645B CN 201510727883 A CN201510727883 A CN 201510727883A CN 105290645 B CN105290645 B CN 105290645B
- Authority
- CN
- China
- Prior art keywords
- welding
- welding rod
- coating
- strength steel
- core wire
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- 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
- B23K35/40—Making wire or rods for soldering or welding
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Nonmetallic Welding Materials (AREA)
Abstract
The invention provides a kind of welding rod for high-strength steel welding, including core wire and coating, the coating to be made up of the component of following percentage by weight：CaCO3：34~48%, CaF2：13~23%, TiO2：4~9%, SiO2：4~8%, Mn：2~7%, Si Fe：4~10%, Ni：2~7%, Mo Fe：0.5~2.5%, C：0.1~0.8%, Na2CO3：0.5~2%, CMC：0.5~2%, rare earth metal or its oxide：1~2%, surplus is iron powder and inevitable impurity.The invention uses CaO CaF2‑TiO2‑SiO2Type basic slag system, be advantageous to alloy transfer and remove objectionable impurities, welding rod welding procedure performance and the good mechanical properties such as O, N, S, P, meet the requirement of 460MPa levels high-strength steel welding, deposited metal yield strength >=500MPa, tensile strength >=600MPa, deposited metal Charpy impact KV2(40 DEG C) >=100J, and the content of welding rod deposited metal diffusible hydrogen has reached the level of ultralow-hydrogen low.
Description
Technical field
The invention belongs to technical field of welding materials, and in particular to a kind of welding rod and its preparation side for high-strength steel welding
Method and application, it can be applied to the supplementary material welding of Offshore Structural Steel material.
Background technology
At present, in ocean structure in order to reduce ocean platform weight and manufacturing cost, it is necessary to reduce steel to greatest extent
Material uses and optimizing structure design, therefore, using steel intensity rank will more and more higher, material thickness is also continuously increased,
The steel grade use ratios such as EQ47, EQ56, the EQ70 of yield strength more than 460MPa are more than 40%.
However, the use of high intensity, big thickness material then proposes bigger challenge to welding technique, it is desirable to the weldering of selection
Connecing material not only has a good welds operating procedure performance, at the same big thickness, high intensity constraint (restraint) degree under the conditions of, have good
Cracking resistance, good tough combination property, good decay resistance and good fatigue crack extended capability.
By development work for many years, China has developed EQ46 high intensity offshore platform steel and has started volume shipment,
Same level imported steel can be substituted completely.But enter in terms of the supporting welding material of this high intensity offshore platform steel
Degree is slow, and the country fails timely supporting development welding material, relies on import wlding mostly, causes manufacturing cost to increase and build week
Phase is longer.Therefore, develop as early as possible and meet that the high-end welding material of offshore engineering is significant.
The content of the invention
In order to solve problem present in above-mentioned technology, it is used for what 460MPa levels high-strength steel welded the invention provides a kind of
Welding rod, deposited metal composition, deposited metal mechanical property and the diffusible hydrogen content of the welding rod can meet 460MPa levels
The welding requirements of high-strength steel.
The invention provides a kind of welding rod for high-strength steel welding, including core wire and coating, the coating by weighing as follows
Measure the component composition of percentage：CaCO3：34~48%, CaF2：13~23%, TiO2：4~9%, SiO2：4~8%, Mn：2~
7%, Si-Fe：4~10%, Ni：2~7%, Mo-Fe：0.5~2.5%, C：0.1~0.8%, Na2CO3：0.5~2%, CMC：
0.5~2%, rare earth metal or its oxide：1~2%, surplus is iron powder and inevitable impurity.
Preferably, above-mentioned coating is made up of the component of following percentage by weight：CaCO3：48%, CaF2：23%,
TiO2：4%, SiO2：6%, Mn：2%, Si-Fe：4%, Ni：2%, Mo-Fe：0.5%, C：0.1%, Na2CO3：1.5%,
CMC：0.5%, rare-earth oxide：2%, surplus is iron powder and inevitable impurity.
Preferably, above-mentioned coating is made up of the component of following percentage by weight：CaCO3：45%, CaF2：18%,
TiO2：5%, SiO2：7%, Mn：3%, Si-Fe：4%, Ni：5%, Mo-Fe：2.5%, C：0.5%, Na2CO3：0.5%,
CMC：2%, rare-earth oxide：1.5%, surplus is iron powder and inevitable impurity.
Preferably, CaCO in above-mentioned coating3With CaF2Weight ratio be 1.5~2.5.
Preferably, above-mentioned core wire uses H08T carbon steel steel cores, and it is C that its chemical composition, which accounts for core wire percentage by weight,:
0.071%, Si:0.11%, Mn:0.42%, S:0.004%, P:0.005%, remaining is iron.
This welding rod for high-strength steel welding of the present invention can be used for the welding of ocean platform 460MPa level high-strength steel.
In the present invention, CaCO3Effect be gas making, slag making, while S, P can also be removed；CaCO3When ratio is higher, due to
CaCO3The CO decomposited2Gas can increase blow force of arc, improve arc stability, be advantageous to droplet transfer, electrode tip horse
Shoes unobvious, welding rod have good vertical position welding operability.But CaCO3When content is higher than 48%, the mobility of slag is deteriorated, weldering
Road is narrow and coarse, and convexity increase, shaping is unsightly；CaCO3When content is less than 34%, the CO that decomposites2Gas is less, right
Molten drop protection is insufficient, and weld metal is easily involved in gas, makes H in weld seam2And N2Increase, the defects of being also easy to produce crackle, same to time-division
It is less to solve product CaO, causes desulfurization, dephosphorization insufficient, easily forms solidification cracking, at the same weld metal impact flexibility drastically under
Drop.In summary, 34%~48% CaCO is added in coating3。
CaF2Main function is slag making, while removes in weld seam [H], it is necessary to control CaF2Addition.CaF2Content is higher than
When 23%, the reduction of coating fusing point is easily caused, sleeve shortens, and blow force of arc reduces, and bad stability, slag is hardened, is unfavorable for taking off
Slag, CaF2For anti-ionization material, and fluorine is very big with electron affinity, easily captures the electronics in electric arc so that electric in electric arc
Quantum count is reduced, and arc stability is deteriorated, meanwhile, electrode tip easily produces the shape of a hoof during vertical position welding, makes vertical position welding operating difficulties；
CaF2When content is less than 13%, dehydrogenation declines, the increase of [H] content, causes hydrogen embrittlement, makes under weld metal plasticity in weld seam
Drop, form white point, produce cold crack etc., therefore, by CaF2Content is controlled 13%~23%.
The welding technological properties of basic electrode depends primarily on CaCO3/CaF2Ratio, to make welding rod that there is good work
Skill performance, control CaCO3/CaF2Ratio be 1.5~2.5.
TiO2Effect be to make slag that there is appropriate fusing point and viscosity, make between weld metal and slag have it is larger
The difference of linear expansion coefficient, so as to improve the removability of slag；Slag setting rate can also accelerated, forms short slag, is advantageous to all position welding
Connect；In addition, rutile (TiO2) also there is good arc-stabilising, it can obviously reduce splashing.TiO2When content is less than 4%, TiO2's
The hot removability of slag acts on unobvious.TiO2When content is higher than 9%, weld seam easily splits, mechanical performance degradation, therefore, TiO2Content control
System is advisable in 4~9% scopes.
Appropriate SiO is added in coating2, SiO during arc burning2And CaCO3The CaO combinations of decomposition can generate calcium metasilicate,
In slag process of setting, α calcium metasilicates are converted into β calcium metasilicates, and because the two coefficient of expansion is different, slag is crisp, make de- slag
Property greatly improve, be particularly conducive in groove take off slag.But SiO2When content is more than 8%, viscosity coefficient of dross can be made excessive, hinder slag
Effect of mass transmitting between liquid metal, influence metallurgical reaction and fully carry out, hinder molten pool gas effusion, be also easy to produce stomata, together
When, splash larger, explosive sound is notable.And SiO2When content is less than 4%, viscosity coefficient of dross is again too small, can make slag covering uneven again
It is even, lose due protective effect, the too small all positon welding for also directly affecting welding rod of viscosity.
Ferrosilicon is added in coating and mainly makees deoxidier, the addition of ferrosilicon can make that appearance of weld is attractive in appearance, and ripple is careful；Si-
Fe contents are 4~10%, and when Si-Fe contents are less than 4% in coating, deoxidation is insufficient, oxygen content increase in weld seam, weld seam gold
Category impact flexibility and elongation percentage reduce, and when Si-Fe contents are higher than 10% in coating, weld metal intensity increases severely, under toughness
Drop, while weld metal graphitization is serious, oxidation generation SiO2Make the viscosity of slag increase, gas is not easy to escape.
And Mn is Transition-metal Alloys, de- S reactions are participated in, and by solution strengthening, increase acicular ferrite content, improve weldering
Stitch the effect of metal strength and toughness.When Mn contents are higher than 7%, weld metal ductility, degraded toughness；Mn contents are less than 2%
When, acicular ferrite is few, forms thick ferrite crystal grain, it is impossible to organizes crack propagation, does not reach reinforcing effect；
Mo-Fe effect is to improve weld metal intensity, within the specific limits adjustable height low-temperature impact toughness.Work as Mo-Fe
When content is more than 2.5%, On Impact Toughness is totally unfavorable, when Mo-Fe contents are less than 0.5%, strengthens DeGrain.
Ni is alloying element important in weld metal, can improve the low-temperature flexibility of weld metal, reduces ductile-brittle transiton temperature
Degree, Ni also have good decay resistance in itself.And when Ni contents are less than 3%, to improving the effect of ferrite matrix toughness
Less, it is impossible to good low-temperature flexibility is obtained, when Ni contents are higher than 6%, is also easy to produce stress corrosion cracking (SCC), it is excellent in order to obtain
Low-temperature flexibility, 3%~6%Ni is added in coating.
Na is added in coating2CO3, CMC can be effectively improved the extrusion performance of welding rod.
The effect that rare earth element is added in coating is purification weld seam, reduces non-metallic inclusion in weld seam, while strengthen medicine
Skin reproducibility, improve the transfer coefficient of alloying element, however, rare earth element is expensive, addition is less, therefore, by itself plus
Enter amount control 1~2%.
In addition, present invention also offers a kind of method for preparing above-mentioned welding rod, comprise the following steps：
1) each component that coating is weighed according to the amount is well mixed；
2) blending ingredients obtained by step 1) are used into K:Na is 2:1 waterglass is as adhesive bond；
3) binding obtained by step 2) is coated on core wire by hydraulic press, dried in natural environment stiff to coating
Afterwards, place into drying oven and be heated to 120 DEG C and be incubated two hours, continue to be heated to 250 DEG C and be incubated two hours, be again heated to 360
DEG C~380 DEG C of two hours of drying.
Beneficial effects of the present invention：
(1) this welding rod for high-strength steel welding provided by the invention uses CaO-CaF2-TiO2-SiO2Type basic slag
System, be advantageous to alloy transfer and remove objectionable impurities, welding rod welding procedure performance and the good mechanical properties such as O, N, S, P,
Meet the requirement of 460MPa levels high-strength steel welding, deposited metal yield strength >=500MPa, tensile strength >=600MPa, deposition gold
Belong to Charpy impact KV2(- 40 DEG C) >=100J, and the content of welding rod deposited metal diffusible hydrogen has reached the level of ultralow-hydrogen low.
(2) this core diameter for high-strength steel welding provided by the invention is small, and welding technological properties is excellent, is adapted to complete
Weld position.
(3) this welding rod for high-strength steel welding provided by the invention not only has good welds operating procedure performance,
Simultaneously under the conditions of big thickness, high constraint (restraint) degree, there is good cracking resistance, good tough combination property and good corrosion resistant
Corrosion energy.
Embodiment
Embodiment 1：
The present embodiment specifically provides a kind of welding rod for high-strength steel welding, including core wire and coating, and the coating is by such as
The component composition of lower percentage by weight：Marble (CaCO3)：34%, fluorite (CaF2)：14%, rutile (TiO2)：9%, silicon
Micro mist (SiO2)：8%, electrolytic manganese (Mn)：7%, ferrosilicon (Si-Fe)：10%, nickel powder (Ni)：4.5%, molybdenum-iron (Mo-Fe)：
2.5%, graphite (C)：0.5%, soda ash (Na2CO3)：1.0%, microcrystalline cellulose (CMC)：1.0%, rare earth metal (Re)：
1.0%, surplus is iron powder and inevitable impurity.
Wherein, the relatively low H08T carbon steel steel cores of core wire S, P content, it is C that its chemical composition, which accounts for core wire percentage by weight,:
0.071%, Si:0.11%, Mn:0.42%, S:0.004%, P:0.005%, remaining is iron.
Welding rod is prepared as steps described below：
1) each component that coating is weighed according to above-mentioned amount is well mixed；
2) blending ingredients obtained by step 1) are used into K:Na is 2:1 waterglass is as adhesive bond；
3) binding obtained by step 2) is coated on core wire by hydraulic press, dried in natural environment stiff to coating
Afterwards, place into drying oven and be heated to 120 DEG C and be incubated two hours, continue to be heated to 250 DEG C and be incubated two hours, be again heated to 360
DEG C~380 DEG C of two hours of drying.
Chemical composition using the deposited metal of the present embodiment welding rod is as shown in table 1, the deposited metal composition of welding rod
Actual measured value in the range of guarantee value.The deposited metal mechanical property of the welding rod is as shown in table 2, the deposited metal of welding rod
The actual measured value of mechanical property is in the range of guarantee value.
It is as shown in table 3 using the banjo fixing butt jointing mechanical property of the present embodiment welding rod, the banjo fixing butt jointing mechanical property of welding rod
Actual measured value is in the range of guarantee value.
Using the present embodiment welding rod deposited metal diffusible hydrogen content (mercury process) as shown in table 4, examined by repeatedly actual
Survey, the actual value of the deposited metal diffusible hydrogen content of the welding rod is in the range of guarantee value.
CTOD (crack tip opening displacement) test data of the present embodiment welding rod is as shown in table 5, the CTOD features of welding rod
Value is more than 0.15mm, and index meets design requirement.The oblique Y test datas of welding rod are as shown in table 6.
Embodiment 2：
The present embodiment specifically provides a kind of welding rod for high-strength steel welding, including core wire and coating, and the coating is by such as
The component composition of lower percentage by weight：Marble (CaCO3)：42%, fluorite (CaF2)：18%, rutile (TiO2)：7%, silicon
Micro mist (SiO2)：4%, electrolytic manganese (Mn)：5%, ferrosilicon (Si-Fe)：6%, nickel powder (Ni)：7%, molybdenum-iron (Mo-Fe)：1.3%,
Graphite (C)：0.3%, soda ash (Na2CO3)：2%, microcrystalline cellulose (CMC)：0.5%, rare-earth oxide (ReO)：
1.5%, surplus is iron powder and inevitable impurity.
Wherein, the relatively low H08T carbon steel steel cores of core wire S, P content, it is C that its chemical composition, which accounts for core wire percentage by weight,:
0.071%, Si:0.11%, Mn:0.42%, S:0.004%, P:0.005%, remaining is iron.
Welding rod is prepared as steps described below：
1) each component that coating is weighed according to above-mentioned amount is well mixed；
2) blending ingredients obtained by step 1) are used into K:Na is 2:1 waterglass is as adhesive bond；
3) binding obtained by step 2) is coated on core wire by hydraulic press, dried in natural environment stiff to coating
Afterwards, place into drying oven and be heated to 120 DEG C and be incubated two hours, continue to be heated to 250 DEG C and be incubated two hours, be again heated to 360
DEG C~380 DEG C of two hours of drying.
Chemical composition using the deposited metal of the present embodiment welding rod is as shown in table 1, the deposited metal composition of welding rod
Actual measured value in the range of guarantee value.The deposited metal mechanical property of the welding rod is as shown in table 2, the deposited metal of welding rod
The actual measured value of mechanical property is in the range of guarantee value.
It is as shown in table 3 using the banjo fixing butt jointing mechanical property of the present embodiment welding rod, the banjo fixing butt jointing mechanical property of welding rod
Actual measured value is in the range of guarantee value.
Using the present embodiment welding rod deposited metal diffusible hydrogen content (mercury process) as shown in table 4, examined by repeatedly actual
Survey, the actual value of the deposited metal diffusible hydrogen content of the welding rod is in the range of guarantee value.
CTOD (crack tip opening displacement) test data of the present embodiment welding rod is as shown in table 5, the CTOD features of welding rod
Value is more than 0.15mm, and index meets design requirement.The oblique Y test datas of welding rod are as shown in table 6.
Embodiment 3：
The present embodiment specifically provides a kind of welding rod for high-strength steel welding, including core wire and coating, and the coating is by such as
The component composition of lower percentage by weight：Marble (CaCO3)：48%, fluorite (CaF2)：23%, rutile (TiO2)：4%, silicon
Micro mist (SiO2)：6%, electrolytic manganese (Mn)：2%, ferrosilicon (Si-Fe)：4%, nickel powder (Ni)：2%, molybdenum-iron (Mo-Fe)：0.5%,
Graphite (C)：0.1%, soda ash (Na2CO3)：1.5%, microcrystalline cellulose (CMC)：0.5%, rare-earth oxide (ReO)：
2%, surplus is iron powder and inevitable impurity.
Wherein, the relatively low H08T carbon steel steel cores of core wire S, P content, it is C that its chemical composition, which accounts for core wire percentage by weight,:
0.071%, Si:0.11%, Mn:0.42%, S:0.004%, P:0.005%, remaining is iron.
Welding rod is prepared as steps described below：
1) each component that coating is weighed according to above-mentioned amount is well mixed；
2) blending ingredients obtained by step 1) are used into K:Na is 2:1 waterglass is as adhesive bond；
3) binding obtained by step 2) is coated on core wire by hydraulic press, dried in natural environment stiff to coating
Afterwards, place into drying oven and be heated to 120 DEG C and be incubated two hours, continue to be heated to 250 DEG C and be incubated two hours, be again heated to 360
DEG C~380 DEG C of two hours of drying.
Chemical composition using the deposited metal of the present embodiment welding rod is as shown in table 1, the deposited metal composition of welding rod
Actual measured value in the range of guarantee value.The deposited metal mechanical property of the welding rod is as shown in table 2, the deposited metal of welding rod
The actual measured value of mechanical property is in the range of guarantee value.
It is as shown in table 3 using the banjo fixing butt jointing mechanical property of the present embodiment welding rod, the banjo fixing butt jointing mechanical property of welding rod
Actual measured value is in the range of guarantee value.
Using the present embodiment welding rod deposited metal diffusible hydrogen content (mercury process) as shown in table 4, examined by repeatedly actual
Survey, the actual value of the deposited metal diffusible hydrogen content of the welding rod is in the range of guarantee value.
CTOD (crack tip opening displacement) test data of the present embodiment welding rod is as shown in table 5, the CTOD features of welding rod
Value is more than 0.15mm, and index meets design requirement.The oblique Y test datas of welding rod are as shown in table 6.
Embodiment 4：
The present embodiment specifically provides a kind of welding rod for high-strength steel welding, including core wire and coating, and the coating is by such as
The component composition of lower percentage by weight：Marble (CaCO3)：48%, fluorite (CaF2)：13%, rutile (TiO2)：6%, silicon
Micro mist (SiO2)：5%, electrolytic manganese (Mn)：4%, ferrosilicon (Si-Fe)：8%, nickel powder (Ni)：3.5%, molybdenum-iron (Mo-Fe)：1%,
Graphite (C)：0.8%, soda ash (Na2CO3)：0.8%, microcrystalline cellulose (CMC)：1.5%, rare-earth oxide (ReO)：
2%, surplus is iron powder and inevitable impurity.
Wherein, the relatively low H08T carbon steel steel cores of core wire S, P content, it is C that its chemical composition, which accounts for core wire percentage by weight,:
0.071%, Si:0.11%, Mn:0.42%, S:0.004%, P:0.005%, remaining is iron.
Welding rod is prepared as steps described below：
1) each component that coating is weighed according to above-mentioned amount is well mixed；
2) blending ingredients obtained by step 1) are used into K:Na is 2:1 waterglass is as adhesive bond；
3) binding obtained by step 2) is coated on core wire by hydraulic press, dried in natural environment stiff to coating
Afterwards, place into drying oven and be heated to 120 DEG C and be incubated two hours, continue to be heated to 250 DEG C and be incubated two hours, be again heated to 360
DEG C~380 DEG C of two hours of drying.
Chemical composition using the deposited metal of the present embodiment welding rod is as shown in table 1, the deposited metal composition of welding rod
Actual measured value in the range of guarantee value.The deposited metal mechanical property of the welding rod is as shown in table 2, the deposited metal of welding rod
The actual measured value of mechanical property is in the range of guarantee value.
It is as shown in table 3 using the banjo fixing butt jointing mechanical property of the present embodiment welding rod, the banjo fixing butt jointing mechanical property of welding rod
Actual measured value is in the range of guarantee value.
Using the present embodiment welding rod deposited metal diffusible hydrogen content (mercury process) as shown in table 4, examined by repeatedly actual
Survey, the actual value of the deposited metal diffusible hydrogen content of the welding rod is in the range of guarantee value.
CTOD (crack tip opening displacement) test data of the present embodiment welding rod is as shown in table 5, the CTOD features of welding rod
Value is more than 0.15mm, and index meets design requirement.The oblique Y test datas of welding rod are as shown in table 6.
Embodiment 5：
The present embodiment specifically provides a kind of welding rod for high-strength steel welding, including core wire and coating, and the coating is by such as
The component composition of lower percentage by weight：Marble (CaCO3)：45%, fluorite (CaF2)：18%, rutile (TiO2)：5%, silicon
Micro mist (SiO2)：7%, electrolytic manganese (Mn)：3%, ferrosilicon (Si-Fe)：4%, nickel powder (Ni)：5%, molybdenum-iron (Mo-Fe)：2.5%,
Graphite (C)：0.5%, soda ash (Na2CO3)：0.5%, microcrystalline cellulose (CMC)：2%, rare-earth oxide (ReO)：
1.5%, surplus is iron powder and inevitable impurity.
Wherein, the relatively low H08T carbon steel steel cores of core wire S, P content, it is C that its chemical composition, which accounts for core wire percentage by weight,:
0.071%, Si:0.11%, Mn:0.42%, S:0.004%, P:0.005%, remaining is iron.
Welding rod is prepared as steps described below：
1) each component that coating is weighed according to above-mentioned amount is well mixed；
2) blending ingredients obtained by step 1) are used into K:Na is 2:1 waterglass is as adhesive bond；
3) binding obtained by step 2) is coated on core wire by hydraulic press, dried in natural environment stiff to coating
Afterwards, place into drying oven and be heated to 120 DEG C and be incubated two hours, continue to be heated to 250 DEG C and be incubated two hours, be again heated to 360
DEG C~380 DEG C of two hours of drying.
Chemical composition using the deposited metal of the present embodiment welding rod is as shown in table 1, the deposited metal composition of welding rod
Actual measured value in the range of guarantee value.The deposited metal mechanical property of the welding rod is as shown in table 2, the deposited metal of welding rod
The actual measured value of mechanical property is in the range of guarantee value.
It is as shown in table 3 using the banjo fixing butt jointing mechanical property of the present embodiment welding rod, the banjo fixing butt jointing mechanical property of welding rod
Actual measured value is in the range of guarantee value.
Using the present embodiment welding rod deposited metal diffusible hydrogen content (mercury process) as shown in table 4, examined by repeatedly actual
Survey, the actual value of the deposited metal diffusible hydrogen content of the welding rod is in the range of guarantee value.
CTOD (crack tip opening displacement) test data of the present embodiment welding rod is as shown in table 5, the CTOD features of welding rod
Value is more than 0.15mm, and index meets design requirement.The oblique Y test datas of welding rod are as shown in table 6.
Table 1:The chemical composition of the deposited metal of various embodiments of the present invention welding rod
Table 2：The deposited metal mechanical property of various embodiments of the present invention welding rod
Table 3：The banjo fixing butt jointing mechanical property of various embodiments of the present invention welding rod
Table 4：The deposited metal diffusible hydrogen content of various embodiments of the present invention welding rod
Table 5:The CTOD test datas of various embodiments of the present invention welding rod
| Thickness/mm | Width/mm | δm/mm | Gap position | |
| Experimental example 1 | 15.96 | 31.92 | 0.560 | Weld pipe mill |
| Experimental example 2 | 15.86 | 31.86 | 0.565 | Weld pipe mill |
| Experimental example 3 | 15.86 | 32.00 | 0.513 | Weld pipe mill |
| Experimental example 4 | 15.92 | 32.15 | 0.557 | Weld pipe mill |
| Experimental example 5 | 15.89 | 31.09 | 0.504 | Weld pipe mill |
Table 6:The oblique Y test datas of various embodiments of the present invention welding rod
In summary, chemical composition, the power of the deposited metal of this welding rod for high-strength steel welding provided by the invention
Learn performance, expand hydrogen content, and banjo fixing butt jointing mechanical property, CTOD test datas, oblique Y test datas are in guarantee value scope
It is interior, suitable for 460MPa level process for welding high-strength steel.
It is exemplified as above be only to the present invention for example, do not form the limitation to protection scope of the present invention, it is all
It is to be belonged to the same or analogous design of the present invention within protection scope of the present invention.
Claims (5)
1. a kind of welding rod for high-strength steel welding, including core wire and coating, it is characterised in that：The coating is by following weight hundred
Divide the component composition of ratio：CaCO3：48%, CaF2：23%, TiO2：4%, SiO2：6%, Mn：2%, Si-Fe：4%, Ni：2%, Mo-Fe：
0.5%, C：0.1%, Na2CO3：1.5%, CMC：0.5%, rare-earth oxide：2%, surplus is iron powder and inevitable impurity.
2. a kind of welding rod for high-strength steel welding, including core wire and coating, it is characterised in that：The coating is by following weight hundred
Divide the component composition of ratio：CaCO3：45%, CaF2：18%, TiO2：5%, SiO2：7%, Mn：3%, Si-Fe：4%, Ni：5%, Mo-Fe：
2.5%, C：0.5%, Na2CO3：0.5%, CMC：2%, rare-earth oxide：1.5%, surplus is iron powder and inevitable impurity.
3. the welding rod for high-strength steel welding as claimed in claim 1 or 2, it is characterised in that：The core wire uses H08T carbon
Steel steel core, it is C that its chemical composition, which accounts for core wire percentage by weight,:0.071%, Si:0.11%, Mn:0.42%, S:0.004%, P:
0.005%, remaining is iron.
4. the preparation method of the welding rod for being used for high-strength steel welding as described in any one of claims 1 to 3, it is characterised in that：Bag
Include following steps：
1) each component that coating is weighed according to the amount is well mixed；
2) blending ingredients obtained by step 1) are used into K:Na is 2:1 waterglass is as adhesive bond；
3) by the binding obtained by step 2) by hydraulic press coated on core wire, natural environment dry to coating it is stiff after, then
Be put into drying oven and be heated to 120 DEG C and be incubated two hours, continue to be heated to 250 DEG C and be incubated two hours, be again heated to 360 DEG C~
380 DEG C of two hours of drying.
5. the purposes of the welding rod for being used for high-strength steel welding as described in any one of claims 1 to 3, it is characterised in that：The weldering
Bar is used for the welding of ocean platform 460MPa level high-strength steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510727883.0A CN105290645B (en) | 2015-10-30 | 2015-10-30 | A kind of welding rod for high-strength steel welding and its preparation method and application |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510727883.0A CN105290645B (en) | 2015-10-30 | 2015-10-30 | A kind of welding rod for high-strength steel welding and its preparation method and application |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105290645A CN105290645A (en) | 2016-02-03 |
| CN105290645B true CN105290645B (en) | 2018-03-16 |
Family
ID=55188827
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510727883.0A Active CN105290645B (en) | 2015-10-30 | 2015-10-30 | A kind of welding rod for high-strength steel welding and its preparation method and application |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105290645B (en) |
Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105665958B (en) * | 2016-03-18 | 2018-10-16 | 武汉铁锚焊接材料股份有限公司 | A kind of welding rod mating suitable for 690MPa grades of rack steels of ocean platform |
| CN105710559A (en) * | 2016-04-19 | 2016-06-29 | 南通豪泰焊材有限公司 | Nickel-based alloy welding rod and manufacturing method thereof |
| CN105880870B (en) * | 2016-05-24 | 2018-03-20 | 武汉铁锚焊接材料股份有限公司 | A kind of high-tenacity heat-resistant steel electrode |
| CN105834614B (en) * | 2016-05-26 | 2018-06-08 | 武汉铁锚焊接材料股份有限公司 | A kind of low-alloy refractory steel electrode containing vanadium |
| CN106078004B (en) * | 2016-06-23 | 2018-10-02 | 武汉铁锚焊接材料股份有限公司 | A kind of low temperature spherical tank ultralow-hydrogen low high-tenacity welding electrodes |
| CN106425164A (en) * | 2016-12-15 | 2017-02-22 | 昆山京群焊材科技有限公司 | High-strength steel electrode used for minus 50 DEG C low temperature spherical tank |
| CN108188614A (en) * | 2017-12-25 | 2018-06-22 | 昆山京群焊材科技有限公司 | A kind of 650 DEG C of ultra supercritical coal-fired units coating transiens heat resistant steel electrode |
| CN110977240A (en) * | 2019-11-18 | 2020-04-10 | 天津大桥焊材集团有限公司 | Welding rod special for 80 kg-grade weathering steel and production method thereof |
| CN112570927A (en) * | 2020-12-03 | 2021-03-30 | 天津大桥龙兴焊接材料有限公司 | Ultralow-hydrogen electrode for welding ultrahigh-strength wear-resistant steel and preparation method thereof |
| CN112496597B (en) * | 2021-02-05 | 2021-05-11 | 四川西冶新材料股份有限公司 | High-strength high-toughness coating of hydrogen-resistant steel, welding rod and preparation method of welding rod |
| CN115338559B (en) * | 2022-08-18 | 2024-01-26 | 四川大西洋焊接材料股份有限公司 | Coating, welding rod and deposited metal |
Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1903497A (en) * | 2006-08-07 | 2007-01-31 | 武汉铁锚焊接材料股份有限公司 | Welding rod for bridge steel |
| CN101406996A (en) * | 2008-10-22 | 2009-04-15 | 燕山大学 | Surfacing electrode for composite duplex metal cold cutting edge green refabrication technique |
| CN101585117A (en) * | 2009-06-11 | 2009-11-25 | 武汉船用机械有限责任公司 | Welding rod for welding hard alloy and steel parts and welding method thereof |
| CN101658986A (en) * | 2009-09-18 | 2010-03-03 | 武汉铁锚焊接材料股份有限公司 | Build-up welding rod for repairing Cr3 roller and build-up welding method |
| CN101658988A (en) * | 2009-05-14 | 2010-03-03 | 杭州同皓电器有限公司 | Micro-graphite welding electrode and preparing method thereof |
| CN101905389A (en) * | 2010-08-23 | 2010-12-08 | 武汉铁锚焊接材料股份有限公司 | Electrode for welding high-strength and high-toughness steel and preparation and application thereof |
| CN101920407A (en) * | 2010-05-16 | 2010-12-22 | 十堰金科化工有限公司 | Novel alloy tool steel welding electrode |
| CN101927408A (en) * | 2009-06-19 | 2010-12-29 | 上海大西洋焊接材料有限责任公司 | Low alloy carbon steel welding rod special for hydrogen controlled covering |
| CN102189355A (en) * | 2010-03-11 | 2011-09-21 | 上海大西洋焊接材料有限公司 | Special nuclear power welding rod matched with steel plate for AP1000-type pressurized water reactor containment vessel |
| CN102658442A (en) * | 2012-05-08 | 2012-09-12 | 上海电力修造总厂有限公司 | Low-alloy steel covered arc welding electrode with Cr control capacity and FAC resisting capacity of weld metal of basic slag system |
| CN104117788A (en) * | 2014-08-06 | 2014-10-29 | 武汉铁锚焊接材料股份有限公司 | Low hydrogen type super-critical ferrite heat resistant steel electrode |
| CN104128717A (en) * | 2014-07-24 | 2014-11-05 | 武汉铁锚焊接材料股份有限公司 | Ultralow-hydrogen low-alloy steel electrode for low-temperature steel |
| CN104400259A (en) * | 2014-10-27 | 2015-03-11 | 武汉铁锚焊接材料股份有限公司 | High-hardness hardfacing electrode |
| CN104907738A (en) * | 2015-05-25 | 2015-09-16 | 武汉铁锚焊接材料股份有限公司 | Special welding rod for sulfuric acid dew point corrosion-resistant steel |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7781701B2 (en) * | 2005-06-13 | 2010-08-24 | Lincoln Global, Inc. | Electrode tip |
-
2015
- 2015-10-30 CN CN201510727883.0A patent/CN105290645B/en active Active
Patent Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1903497A (en) * | 2006-08-07 | 2007-01-31 | 武汉铁锚焊接材料股份有限公司 | Welding rod for bridge steel |
| CN101406996A (en) * | 2008-10-22 | 2009-04-15 | 燕山大学 | Surfacing electrode for composite duplex metal cold cutting edge green refabrication technique |
| CN101658988A (en) * | 2009-05-14 | 2010-03-03 | 杭州同皓电器有限公司 | Micro-graphite welding electrode and preparing method thereof |
| CN101585117A (en) * | 2009-06-11 | 2009-11-25 | 武汉船用机械有限责任公司 | Welding rod for welding hard alloy and steel parts and welding method thereof |
| CN101927408A (en) * | 2009-06-19 | 2010-12-29 | 上海大西洋焊接材料有限责任公司 | Low alloy carbon steel welding rod special for hydrogen controlled covering |
| CN101658986A (en) * | 2009-09-18 | 2010-03-03 | 武汉铁锚焊接材料股份有限公司 | Build-up welding rod for repairing Cr3 roller and build-up welding method |
| CN102189355A (en) * | 2010-03-11 | 2011-09-21 | 上海大西洋焊接材料有限公司 | Special nuclear power welding rod matched with steel plate for AP1000-type pressurized water reactor containment vessel |
| CN101920407A (en) * | 2010-05-16 | 2010-12-22 | 十堰金科化工有限公司 | Novel alloy tool steel welding electrode |
| CN101905389A (en) * | 2010-08-23 | 2010-12-08 | 武汉铁锚焊接材料股份有限公司 | Electrode for welding high-strength and high-toughness steel and preparation and application thereof |
| CN102658442A (en) * | 2012-05-08 | 2012-09-12 | 上海电力修造总厂有限公司 | Low-alloy steel covered arc welding electrode with Cr control capacity and FAC resisting capacity of weld metal of basic slag system |
| CN104128717A (en) * | 2014-07-24 | 2014-11-05 | 武汉铁锚焊接材料股份有限公司 | Ultralow-hydrogen low-alloy steel electrode for low-temperature steel |
| CN104117788A (en) * | 2014-08-06 | 2014-10-29 | 武汉铁锚焊接材料股份有限公司 | Low hydrogen type super-critical ferrite heat resistant steel electrode |
| CN104400259A (en) * | 2014-10-27 | 2015-03-11 | 武汉铁锚焊接材料股份有限公司 | High-hardness hardfacing electrode |
| CN104907738A (en) * | 2015-05-25 | 2015-09-16 | 武汉铁锚焊接材料股份有限公司 | Special welding rod for sulfuric acid dew point corrosion-resistant steel |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105290645A (en) | 2016-02-03 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105290645B (en) | A kind of welding rod for high-strength steel welding and its preparation method and application | |
| CN105269174B (en) | A kind of ocean engineering 460MPa grades of flux-cored wires and its application | |
| CN107931888A (en) | Hydroelectric project high tensile steel electrode and preparation method thereof | |
| CN107052617B (en) | A kind of 1000MPa grade high-strength all positon ultralow-hydrogen low flux-cored wire and its welding method | |
| CN105033503B (en) | One kind is used for corrosion-resisting steel welding welding rod | |
| CN102500950B (en) | Welding electrode for welding X65-grade pipeline steel | |
| CN104551453B (en) | 80kg ultralow temperature high-strength steel welding electrode and preparation method thereof | |
| CN104400250B (en) | A kind of flux-cored | |
| CN102441746B (en) | Electric welding rod for welding X70-grade pipeline steel | |
| CN106346167A (en) | Welding rod for welding of martensite heat-resistant steel | |
| CN110653515B (en) | Seamless submerged arc flux-cored wire for welding high manganese steel LNG storage tank | |
| CN102554500A (en) | High-strength and high-toughness low alloy steel electric welding rod | |
| CN101537544B (en) | Electric welding rod for welding large scale low temperature spherical tank steel | |
| CN108907494A (en) | Nuclear power AG728 steel electrode and preparation method | |
| CN105127617A (en) | Electric welding rod for welding steel ocean platform with yield strength of 550MPa | |
| CN108971795A (en) | A kind of high manganese austenite low-temperature steel welding rod | |
| CN105014261B (en) | A kind of chrome-molybdenum steel seamless metal powder core type flux-cored wire | |
| CN106425172A (en) | Ultralow-hydrogen welding rod for welding Q690-grade steel and preparation method of ultralow-hydrogen welding rod | |
| CN107803608A (en) | A kind of martensite precipitation-hardening stainless steel electrode and its preparation method and application | |
| CN108788533A (en) | A kind of 50 feather weight marine atmosphere corrosion-resisting steel titania type gas-shielded flux-cored wires | |
| CN106624455A (en) | Ultralow hydrogen high-strength steel welding rod used for welding 100 kg class water-electricity pressure steel pipe and preparing method thereof | |
| CN106078004B (en) | A kind of low temperature spherical tank ultralow-hydrogen low high-tenacity welding electrodes | |
| CN108274149A (en) | A kind of 20 control chromium steel welding rods of nuclear power | |
| CN108637519A (en) | A kind of water power 1000MPa grades of mating welding rods of steel and preparation method thereof | |
| CN110253173A (en) | A kind of austenitic stainless steel self-shielded arc welding increasing material manufacturing flux cored wire |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |