CN106563888A - High-cost-performance submerged-arc welding wire and producing method thereof - Google Patents
High-cost-performance submerged-arc welding wire and producing method thereof Download PDFInfo
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- CN106563888A CN106563888A CN201510652456.0A CN201510652456A CN106563888A CN 106563888 A CN106563888 A CN 106563888A CN 201510652456 A CN201510652456 A CN 201510652456A CN 106563888 A CN106563888 A CN 106563888A
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Classifications
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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
- B23K35/308—Fe as the principal constituent with Cr as next major constituent
- B23K35/3086—Fe as the principal constituent with Cr as next major constituent containing Ni or Mn
-
- 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
-
- 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
- B23K9/18—Submerged-arc welding
- B23K9/186—Submerged-arc welding making use of a consumable electrodes
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Arc Welding In General (AREA)
Abstract
The invention relates to a high-cost-performance submerged-arc welding wire and a producing method thereof. The high-cost-performance submerged-arc welding wire comprises the following chemical components, by mass: 0.015% to 0.025% of C, Si less than or equal to 1.00%, Mn less than or equal to 2.50%, P less than or equal to 0.020%, S less than or equal to 0.010%, 9.00% to 12.00% of Ni, 18.00% to 20.00% of Cr, Mo less than or equal to 0.50%, 0.05% to 0.10% of N, 0.05% to 0.30% if Ti, Co less than or equal to 0.018%, less than 0.30% of one or more than one of rare earth elements Ce, Dy, Y, and Nd, and the reminder being iron; and a high-temperature ferrite delta in as-cast 304 austenitic stainless steel is less than or equal to 5%. In addition, the producing method includes the following steps: carrying out batching, vacuumizing, argon gas filing, electrification, full melting, cooling, silicon iron adding, carbon adding, rare earth adding, add titanium adding, power outage, pouring, and cooling to obtain steel ingots; and then carrying out steel forging, rolling, welding wire finishing, and thermal finished product treatment. According to the high-cost-performance submerged-arc welding wire, the strength of welding wire deposited wire can be improved effectively; and the titanium price is low and thus the production cost can be lowered.
Description
Technical field
The present invention relates to welding wire technology field, particularly a kind of high performance-price ratio submerged-arc welding wire and its producer
Method.
Background technology
Austenitic stainless steel under high temperature and extremely low temperature due to all having good plasticity and toughness, cold and hot working performance
It is widely used in the fields such as oil, chemical industry, aerospace and the energy with resistance to local corrosion performance.Such as building for nuclear power station
If being accomplished by using substantial amounts of austenitic stainless steel (304N, 316N etc.).It is domestic at present big in the nuclear power station built
Part is pressurized-water reactor nuclear power plant, and temperature is up to 350 DEG C in its heap, and this is just proposed to the high temperature strength of material
Higher and higher requirement.The material for adopting at present predominantly controls nitrogen type austenitic rustless steel, and such steel has intensity
High the characteristics of.In such steel grade of welding according to will welding point during conventional ER308L stainless steel welding sticks
There are problems that tensile strength is not enough.
Chinese patent application CN201310531804.X discloses a kind of high intensity austenitic stainless steel submerged-arc welding weldering
Silk, can be used for the welding of critical component in presurized water reactor nuclear island, can solve the problem that and is transported for a long time under material presurized water reactor environment
Row weld properties deficiency problem, but it is in the fabrication process the ability of its intergranular corrosion resistance of raising, need
Precious metal element Nb is added, high expensive is caused.
There is provided that a kind of low cost, tensile strength is high, manufacturability is excellent suitable for the height that works corrosive medium
Cost performance austenitic stainless steel welding wire is those skilled in the art's technical issues that need to address.
The content of the invention
It is an object of the invention to provide a kind of high performance-price ratio submerged-arc welding wire and its production method, the rustless steel is buried
Arc-welding welding wire low cost of manufacture, tensile strength are high and processing performance is excellent.
The technical scheme is that, a kind of high intensity austenitic stainless steel buried arc welding wire, its Ingredients Weight hundred
Point ratio is：
C 0.015%～0.025%；
Si≤1.00%；
Mn≤2.50%；
P≤0.020%；
S≤0.010%；
Ni 9.00～12.00%；
Cr 18.00～20.00%；
Mo≤0.50%；
N 0.05～0.10%；
Ti 0.05～0.30%；
Co≤0.018%；
One or more in rare earth element ce, Dy, Y, Nd, less than 0.30%, balance of ferrum；
And the high temperature ferrite δ contents in as-cast austenitic stainless steel are≤5%.
The reasons why determining above-mentioned chemical composition is as follows：
Carbon：Carbon can increase the low temperature intensity of alloy by solution strengthening, play invigoration effect；Carbon content
Span of control, below the dissolubility in carbon in ferrite or close to the dissolubility of carbon in ferrite, therefore
By carbon content is preferably 0.015%～0.025%.
Nickel：Nickel is strong austenite former, increases the stability that nickel content is favorably improved austenite structure,
The intensity of steel can be improved, and keeps good plasticity and toughness；Nickel has higher corrosion resistance to soda acid,
But nickel is precious metal raw material, too high levels can cause material price high, and in addition high nickel content is unfavorable for material
The raising of low temperature intensity, therefore preferably 9.00%～12.0%.
Chromium：Chromium is ferrite former, can significantly improve intensity, corrosion resistance, but while reduce plasticity and
Toughness；But chromium content is too high, ferrite content in austenite can be caused to increase, therefore preferably 18.00～
20.00%.
Molybdenum：Molybdenum is ferrite former, and molybdenum is added in austenitic stainless steel can improve austenitic stainless steel
Pitting resistance, by solution strengthening its intensity can be improved, and should not be added in steel grade of the welding without molybdenum
It is many, in this patent, molybdenum content is controlled to less than 0.50%.
Nitrogen：On the one hand nitrogen can significantly improve austenite not as strong austenite former by solution strengthening
The elevated temperature strength of rust steel, another aspect nitrogen interacts with titanium, can more obviously improve material at high temperature intensity；
But nitrogen content is too high, substantial amounts of nitride can be caused to separate out, the Toughness and corrosion resistance of material can be reduced again
Can, therefore preferably 0.05～0.10%.
Manganese：Increasing manganese content can improve the intensity of steel, increase the solid solubility of nitrogen in austenitic stainless steel,
But manganese content is too high, can cause to produce martensite in austenitic stainless steel, therefore manganese content is preferably less than
2.50%.Manganese amount increases, and weakens the resistance to corrosion of steel, reduces welding performance.
Titanium：In the temperature-rise period of steel rolling, titanium and nitrogen, the little particle for combining to form disperse of carbon, to Ovshinsky
Body crystal boundary plays fixation, hinders the migration of austenite grain boundary, effectively prevents AUSTENITE GRAIN COARSENING, and in drop
Titanium is separated out in austenite with nitrogen, carbon compound to before ferritic transformation during temperature, becomes ferritic shape
Nuclear particle, makes ferritic crystal grain refinement, can also avoid intercrystalline corrosion, improves the corrosion resistance of steel；And titanium
When the content of element is between 0.05%～0.10%, the impact to γ crystallite dimensions is the most notable, therefore by titanium
Content is preferably 0.05%～0.30%.
Silicon：Silicon can significantly improve the elastic limit of steel, yield point and tensile strength, used as the formation of chromium equivalent
Element, and molybdenum, chromium etc. combines, and can improve the corrosion resistance and non-oxidizability of steel.
Rare earth element：Rare earth element has the effect of refinement austenitic stainless steel, in being added to molten steel, Ke Yizeng
Plus the equiax crystal during solidification of molten steel, it is original so as to reach the purpose of the original as-cast structure of refinement continuous casting billet
The refinement of as-cast structure crystal grain is conducive to the refinement of final products crystal grain.In addition rare earth element shape in process of setting
Into small particle can also reduce grow up tendency of the austenitic stainless steel in heating process.
Sulfur, phosphorus：Impurity element during alloy smelting.
The austenitic stainless steel buried arc welding wire composition of the present invention, the welding wire of the present invention are proposed for the above reasons
Welding point has excellent elevated temperature strength Jing after use, also with good anti-neutron irradiation performance, can be used for
Presurized water reactor in-pile component is welded.
The high performance-price ratio submerged-arc welding wire of the present invention uses Ti element substitution Nb elements, by Ti and N, C
The interaction of element, forms TiN, TiC in the smelting process of welding wire, can effectively prevent austenite crystal
Grain roughening, fining ferrite grains, it is to avoid intercrystalline corrosion improve the corrosion resistance of welding wire deposited metal；Simultaneously
Due to the effect of the nickel equivalent element that Ni, Mn, C, N etc. are formed beneficial to austenitic stainless steel, can effectively carry
The intensity of high welding wire deposited metal, and the low price of titanium, can reduce production cost.
A kind of production method of above-mentioned high performance-price ratio submerged-arc welding wire, including：
Dispensing → evacuation → applying argon gas → energization → fine melt → cooling → plus ferrosilicon → plus carbon → plus rare earth → plus
Titanium → power failure → cast, obtains steel ingot after cooling.
Then carry out forged steel, steel rolling, welding wire essence pull out, finished product heat treatment：
A. forged steel：1230 DEG C of initial forging temperature, 950 DEG C of final forging temperature, then air cooling.
B. steel rolling：Multi- pass rolling, 1100～1200 DEG C of intermediate anneal temperature.
C. essence pulls into the satisfactory welding wire of diameter.
D. solution heat treatment is carried out in the range of 1100～1180 DEG C.
Further, reconditioning process is carried out to surface before essence pulls into type, removes face crack.
The high performance-price ratio submerged-arc welding wire production method operation of the present invention is simple, it is easy to control.The present invention is basis
Titanium and nitrogen complex intensifying improving the elevated temperature strength of austenitic stainless steel welding wire for submerged-arc welding, while intensity is improved,
Taken into account the room-temperature property of deposited metal, at the same ensured by controlling S, P and Co content its it is good it is anti-in
Sub- irradiation behaviour, by rationally determine nickel equivalent formation element Ni, Mn, N, C and chromium equivalent formation element Cr,
The content of Si, Mo, controls the high temperature ferrite content in austenitic stainless steel to ensure the tension of welding point
Intensity, intercrystalline corrosion and joint quality.
Specific embodiment
Embodiment
The present embodiment has manufactured experimently 3 batches of welding wires, and Jing identical production technologies are prepared for the welding wire of comparative example,
Through dispensing → evacuation → applying argon gas → energization → fine melt → cooling → plus ferrosilicon → plus carbon → plus rare earth → plus
Titanium → power failure → cast, obtains the steelmaking process of steel ingot after cooling, then carry out forging, 1230 DEG C of initial forging temperature,
950 DEG C of final forging temperature, is rolled after air cooling, and the semi-finished product of a diameter of 5.5mm are obtained after multi- pass rolling,
1150 DEG C of intermediate anneal temperature；Figuring of surface process is carried out after the completion of annealing, face crack is processed；By diameter
The semi-finished product of 5.5mm are drawn to 2.5mm, carry out solution heat treatment, and 1150 DEG C of temperature obtains finished product welding wire.
Referring to table 1, gage of wire is 2.5mm to its chemical composition, and supporting to be welded as SJ601H, welding base metal is
Z2CN19-10 (N), welding condition is：Arc voltage 25V, welding current is 450A, welding speed
Spend for 500mm/min, postwelding measures the mechanical property and decay resistance of deposited metal.It is wherein corrosion-resistant
Performance is inclined to without intercrystalline corrosion, is shown in Table according to sulphuric acid in GB4334-2000-copper sulfate standard, three kinds of welding wires
2。
The embodiment of table 1 and comparative example standard analysis
The embodiment of table 2 and comparative example mechanical property and decay resistance
Knowable to the experimental result of embodiment, the welding performance that can equally meet 304L steel using Ti elements will
Ask, the effect for substituting ER308L, tensile strength and intercrystalline corrosion is suitable with Nb element effects are used,
But the price of Ti is only the 1/10th even less of Nb, therefore can be with cost-effective.
Obviously, above-described embodiment is only intended to clearly illustrate example of the present invention, and is not to this
The restriction of bright embodiment.For those of ordinary skill in the field, on the basis of the above description
Can also make other changes in different forms.There is no need to give all of embodiment
It is exhaustive.And these belong to the obvious change extended out of spirit or variation of the present invention still in the present invention
Protection domain in.
Claims (5)
1. a kind of high performance-price ratio submerged-arc welding wire, it is characterised in that chemical composition and its mass percent are：
C 0.015%~0.025%；
Si≤1.00%；
Mn≤2.50%；
P≤0.020%；
S≤0.010%；
Ni 9.00~12.00%；
Cr 18.00~20.00%；
Mo ≤0.50%；
N 0.05~0.10%；
Ti 0.05~0.30%；
Co≤0.018%；
One or more in rare earth element ce, Dy, Y, Nd, less than 0.30%, balance of ferrum；And the high temperature ferrite δ contents in as-cast austenitic stainless steel are≤5%.
2. the production method of high performance-price ratio submerged-arc welding wire according to claim 1, it is characterised in that comprise the steps：
（1）Dispensing → evacuation → applying argon gas → energization → fine melt → cooling → plus ferrosilicon → plus carbon → plus rare earth → plus titanium → power failure → cast, obtain steel ingot after cooling；
（2）Forged steel, steel rolling, welding wire essence are pulled out, finished product heat treatment.
3. production method according to claim 2, it is characterised in that the forged steel includes：1230 DEG C of initial forging temperature, 950 DEG C of final forging temperature.
4. production method according to claim 2, it is characterised in that the steel rolling includes：Multi- pass rolling, intermediate anneal temperature is 1100～1200 DEG C.
5. production method according to claim 2, it is characterised in that the finished product heat treatment includes that essence is pulled out the welding wire for obtaining and solution heat treatment is carried out in the range of 1100-1180 DEG C.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510652456.0A CN106563888A (en) | 2015-10-10 | 2015-10-10 | High-cost-performance submerged-arc welding wire and producing method thereof |
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| CN201510652456.0A CN106563888A (en) | 2015-10-10 | 2015-10-10 | High-cost-performance submerged-arc welding wire and producing method thereof |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107214436A (en) * | 2017-06-19 | 2017-09-29 | 江苏师范大学 | A kind of welding wire containing nano-cerium oxide, titanium oxide |
| CN111168275A (en) * | 2020-03-14 | 2020-05-19 | 昆山京群焊材科技有限公司 | Submerged arc welding wire for austenitic stainless steel |
| CN111250897A (en) * | 2018-11-30 | 2020-06-09 | 泰州市淳强不锈钢有限公司 | High-strength stainless steel welding material |
| US20220281038A1 (en) * | 2019-11-26 | 2022-09-08 | Esab Seah Corp. | Stainless steel welding wire for use in lng tank manufacturing |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107214436A (en) * | 2017-06-19 | 2017-09-29 | 江苏师范大学 | A kind of welding wire containing nano-cerium oxide, titanium oxide |
| CN111250897A (en) * | 2018-11-30 | 2020-06-09 | 泰州市淳强不锈钢有限公司 | High-strength stainless steel welding material |
| US20220281038A1 (en) * | 2019-11-26 | 2022-09-08 | Esab Seah Corp. | Stainless steel welding wire for use in lng tank manufacturing |
| CN111168275A (en) * | 2020-03-14 | 2020-05-19 | 昆山京群焊材科技有限公司 | Submerged arc welding wire for austenitic stainless steel |
| CN111168275B (en) * | 2020-03-14 | 2022-03-18 | 昆山京群焊材科技有限公司 | Submerged arc welding wire for austenitic stainless steel |
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Application publication date: 20170419 |
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