CN104999192A - Core I-stage 2209 duplex stainless steel welding rod - Google Patents
Core I-stage 2209 duplex stainless steel welding rod Download PDFInfo
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- CN104999192A CN104999192A CN201510128859.5A CN201510128859A CN104999192A CN 104999192 A CN104999192 A CN 104999192A CN 201510128859 A CN201510128859 A CN 201510128859A CN 104999192 A CN104999192 A CN 104999192A
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- Prior art keywords
- core
- stainless steel
- welding rod
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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
- B23K35/22—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by the composition or nature of the material
- B23K35/36—Selection of non-metallic compositions, e.g. coatings, fluxes; Selection of soldering or welding materials, conjoint with selection of non-metallic compositions, both selections being of interest
- B23K35/365—Selection of non-metallic compositions of coating materials either alone or conjoint with selection of soldering or welding materials
-
- 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
- B23K35/404—Coated rods; Coated electrodes
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Nonmetallic Welding Materials (AREA)
Abstract
The invention discloses a core I-stage 2209 duplex stainless steel welding rod. The core I-stage 2209 duplex stainless steel welding rod comprises a welding core and a coating, wherein the outer wall of the welding core is coated with the coating. The welding core comprises, by weight percentage, 0-0.04% of C, 0.5%-2.0% of Mn, 0-1.0% of Si, 0-0.03% of S, 0-0.04% of P, 21.5%-23.5% of Cr, 8.5%-10.5% of Ni, 2.5%-3.5% of Mo, 0.08%-0.20% of N, 0-0.75% of Cu and the balanced Fe. Compared with the prior art, the excellent welding performances of being good in full-position welding performance, small in flashing, good in slag detachability and the like are achieved, and the core I-stage 2209 duplex stainless steel welding rod has the excellent stress-corrosion cracking resistance and the excellent pitting resistance.
Description
Technical field
The present invention relates to Material Field, be specifically related to a kind of core I level 2209 diphasic stainless steel electrode.
Background technology
Along with the fast development of metal manufacture and stainless steel industry, require also very high to the product technology of welding procedure welding rod used.In present stainless steel technology, containing chromium 22-25%, nickel 5-7% in two-phase stainless composition of steel, lower than 304,316 austenitic stainless steel levels, all with the addition of a certain amount of molybdenum, and a small amount of nitrogen, what have also added copper and tungsten.Two phase stainless steel has following performance characteristics: two phase stainless steel has the good stress corrosion performance of resistance to chloride under low stress; Good resistance to pitting performance is had containing molybdenum two phase stainless steel; There is good resistance to corrosion fatigue and erosion corrosion performance; Comprehensive mechanical property is good; Good weldability, hot cracking tendency is little, and do not need preheating before general weldering, postwelding does not need heat treatment.Be widely used in the heat exchangers such as the high temperature resistant red fuming nitric acid (RFNA) of sea water resistance such as nuclear power, oil refining, chemical fertilizer, papermaking, oil, chemical industry and cold pouring device and device.This welding rod overcomes two-phase proportion instability, by adjusting the design of coating slag system and alloy system, ensureing that weld metal obtains stable Phase Proportion, making welding rod have good performance,
The manufacture of current domestic nuclear power key equipment and in installing the welding material used based on import.The welding material used all monopolize by offshore company, not only expensive, procurement cycle is long, and quality control is difficult, and the risk that existence is blocked because of politics cause, is unfavorable for the development of China's Nuclear Electricity.Domestic nuclear power construction period in enormous quantities, in the urgent need to carrying out the production domesticization of core level welding material.In order to overcome domestic seedless level welding material, the invention provides a kind of core I level 2209 diphasic stainless steel electrode, make it have excellent welding performance, splash little, deslag performance is good, improve the welding technological properties of stainless steel electrode, particularly and there is excellent stress corrosion dehiscence resistant and pitting corrosion resistant performance.
Summary of the invention
Goal of the invention: in order to overcome the deficiencies in the prior art, the invention provides a kind of core I level 2209 diphasic stainless steel electrode.
Technical scheme: for achieving the above object, a kind of core I level 2209 diphasic stainless steel electrode provided by the invention, comprise core wire and be coated on the coating of core wire outer wall, described core wire is composed of the following components by weight percentage:
0～0.04％C
0.5～2.0％Mn
0～1.0％Si
0～0.03％S
0～0.04％P
21.5～23.5％Cr
8.5～10.5％Ni
2.5～3.5％Mo
0.08～0.20％N
0～0.75％Cu
The Fe of surplus.
Further, described coating comprises following component by weight:
Rutile 20 ~ 27%
Mica 1 ~ 3%
Potassic feldspar 1 ~ 4%
Ferrotungsten 1 ~ 2%
Titanium dioxide 1 ~ 3%
Fluorite 6 ~ 9%
Crome metal 20 ~ 25%
Electrolytic manganese 2 ~ 3%
Potassium titanate 1 ~ 4%
Chromium nitride 6 ~ 10%
Sodium alginate 0.03 ~ 0.30%
Marble 5 ~ 15%
Nickel powder 5 ~ 7%
Molybdenum powder 1 ~ 8%
Bentonite 0.04 ~ 0.30%
Reduced iron powder 5 ~ 13%
Magnesite 0.02 ~ 0.20%
Copper powder 0.1 ~ 0.6%
CMC 0.1～0.5％
25％≤PRE≤43％。
Above-mentioned welding rod preparation technology prepares coating and core wire by the designing requirement of welding rod prescription, and applying coating on core wire, make it the shape, the size that reach regulation, drying becomes welding rod, the drawing of steel wire; Wire straightening, cut-out and cleaning; The allotment of water glass of binder and breading; The extrusion of electrode coating; The oven dry of electrode coating and packaging; The inspection of welding rod finished product.
CMC is the abbreviation of CMC, CMC is used in welding rod as glaze slip agent, ceramic mould coating is made to have good molding bonded, brushing performance, simultaneously when high temperature, also tool burnouts performance, welding rod medicine adhesive can be made, replace waterglass, improve operability, improve welding rod surface smoothness and welding agent adhesion.PRE is spot corrosion index, general PRE25-43 (PRE=Cr%+3.3Mo%+16N%), is commonly referred to super duplex steel when PRE is more than 40.
Rutile of the present invention makes welding arc stablility, and molten bath is tranquil, can refinement transition molten drop, beautify appearance of weld, guarantee slag spreadability, but excessive use easily makes mechanical domestic animal decline, therefore its content controls 20 ~ 27%;
Mica makes welding arc stabilising arc, slag making, springiness, is conducive to welding rod and produces, can increase coating gas permeability, therefore prevent effect to coating is easily dry and cracked and rubescent, too much excessively thick mica can make coating loosen, welding rod is broken head and scratch easily, makes to shake skin excessively thick simultaneously, makes surface quality poor;
Potassic feldspar stabilising arc, slag making, be conducive to de-slag in right amount, and too much slow down weldering speed, increases the viscosity of slag;
Ferrotungsten, nickel powder as alloying constituent, be used for compensating alloying element in welding process scaling loss and to weld seam transition alloy elements, to ensure that weld metal obtains necessary chemical composition and performance etc.;
Titanium dioxide increases electrode coating plasticity, is slag former, but improving technique performance is not as rutile, and its content controls 1 ~ 3%;
Fluorite is a kind of important materials of hydrogen controlled electrode, and its Main Function is slag making, and in basic slag, it can reduce the fusing point of slag, viscosity and surface tension, increases the mobility of slag, can reduce the gaseous impurity in weld metal, have certain dehydrogenation effect;
Crome metal is that brittle metal can not separately as metal material, but with the component alloys such as iron, nickel, cobalt, titanium, aluminium, copper after make welding rod have heat resistance, heat resistance, wearability and property;
The purity of electrolytic manganese is very high, and its effect is the hardness increasing coating, can improve the intensity of welding rod, toughness, wearability and corrosion resistance in coating;
Potassium titanate makes welding rod easy arc striking and arc stability can be kept in welding process to burn;
Chromium nitride can improve the adhesion strength of welding rod;
Sodium alginate is a kind of well thickener, stabilizing agent and gelling agent, for improving and the performance of stable welding rod;
The main effect of marble is slag making and gas making, secondly also has stabilising arc and improves the effects such as the basicity of slag and desulfurization;
Molybdenum powder strengthens the intensity of welding rod, hardness, solderability and toughness, also can strengthen its high temperature strength and decay resistance;
Bentonite is as plasticizer, increase coating powder in the plasticity of welding rod pressure Xu process, slip and mobility, to improve the extrusion quality of welding rod, reduce the degree of eccentricity, these materials usually all have characteristic that certain water suction expands afterwards or have certain elasticity, slip;
Reduced iron powder Well-recovered, makes welding arc stablility, and molten bath is tranquil, and increase deposition efficiency, make the fine mist transition of metal, electric arc is soft, and appearance of weld is attractive in appearance, and molten slag covers;
Magnesite, by the metallurgical chemistry reaction carried out in welding process, to reduce the oxygen content in weld metal, improves Weld Performance;
Copper powder has excellent processing performance, and wetability is good, and be easy to fill up gap, intensity is high, plasticity good, electric conductivity and corrosion resistance good;
CMC is the abbreviation of CMC, and CMC to be used in welding rod, as glaze slip agent, making ceramic mould coating have good molding bonded, brushing performance, and when high temperature, also tool burnouts performance simultaneously.Welding rod medicine adhesive can be made, replace waterglass, improve operability, improve welding rod surface smoothness and welding agent adhesion.
Beneficial effect: the present invention in terms of existing technologies, possess following advantage: in alloy system, each alloying element carries out reasonably combined, welding rod can be made to have good processing performance and mechanical performance, splash little, deslag performance is good, and has excellent stress corrosion dehiscence resistant and pitting corrosion resistant performance; The design of adjustment coating slag system and alloy system, ensures that weld metal obtains stable Phase Proportion; Be conducive to reducing alloying element scaling loss with lime-titania type slag system, reduce weld seam and ooze Si tendency, improve the anti-pore ability of welding rod.
Detailed description of the invention
Below in conjunction with embodiment, the present invention is further described.
A kind of core I level 2209 diphasic stainless steel electrode, comprises core wire and is coated on the coating of core wire outer wall; Coating accounts for the 0.4-0.5 of welding rod gross weight,, the component of core wire is: the C of 0 ~ 0.04%, the Mn of 0.5 ~ 2.0%, the Si of 0 ~ 1.0%, the S of 0 ~ 0.03%, the P of 0 ~ 0.04%, the Cr of 21.5 ~ 23.5%, the Ni of 8.5 ~ 10.5%, the Mo of 2.5 ~ 3.5%, the N of 0.08 ~ 0.20%, the Cu of 0 ~ 0.75% and the Fe of surplus.The invention is characterized in and adopt following chemical coating of welding electrode formula (weight proportion meter): rutile 20 ~ 27%, mica 1 ~ 3%, potassic feldspar 1 ~ 4%, ferrotungsten 1 ~ 2%, titanium dioxide 1 ~ 3%, fluorite 6 ~ 9%, crome metal 20 ~ 25%, electrolytic manganese 2 ~ 3%, potassium titanate 1 ~ 4%, chromium nitride 6 ~ 10%, sodium alginate 0.03 ~ 0.30%, marble 5 ~ 15%, nickel powder 5 ~ 7%, molybdenum powder 1 ~ 8%, bentonite 0.04 ~ 0.30%, reduced iron powder 5 ~ 13%, magnesite 0.02 ~ 0.20%, copper powder 0.1 ~ 0.6%, CMC 0.1 ~ 0.5%, 25%≤PRE≤43%, bonding agent is added after the component of described coating mixes.
Further illustrate below by embodiment 1 ~ 5
Table 1 is component distribution (percentage by weight %) of core wire
Table 2 is component distribution (percentage by weight %) of coating
For embodiment 1 ~ 5 above,
According to the embodiment of above 1 ~ 5, welding effect is more satisfactory, and operating procedure performance is good, arc stability, and de-slag is easy.
The above is only the preferred embodiment of the present invention; be noted that for those skilled in the art; under the premise without departing from the principles of the invention, can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (4)
1. core I level 2209 diphasic stainless steel electrode, is characterized in that: comprise core wire and be coated on the coating of core wire outer wall, described core wire is composed of the following components by weight percentage:
0～0.04％C
0.5～2.0％Mn
0～1.0％Si
0～0.03％S
0～0.04％P
21.5～23.5％Cr
8.5～10.5％Ni
2.5～3.5％Mo
0.08～0.20％N
0～0.75％Cu
The Fe of surplus.
2. core I level 2209 diphasic stainless steel electrode according to claim 1, is characterized in that: described coating comprises following component by weight:
Rutile 20 ~ 27%
Mica 1 ~ 3%
Potassic feldspar 1 ~ 4%
Ferrotungsten 1 ~ 2%
Titanium dioxide 1 ~ 3%
Fluorite 6 ~ 9%
Crome metal 20 ~ 25%
Electrolytic manganese 2 ~ 3%
Potassium titanate 1 ~ 4%
Chromium nitride 6 ~ 10%
Sodium alginate 0.03 ~ 0.30%
Marble 5 ~ 15%
Nickel powder 5 ~ 7%
Molybdenum powder 1 ~ 8%
Bentonite 0.04 ~ 0.30%
Reduced iron powder 5 ~ 13%
Magnesite 0.02 ~ 0.20%
Copper powder 0.1 ~ 0.6%
CMC 0.1～0.5％
25％≤PRE≤43％。
Bonding agent is added after the component of described coating mixes.
3. core I level 2209 diphasic stainless steel electrode according to claim 1, is characterized in that: it is 0.4 ~ 0.5 that described coating accounts for welding rod weight ratio.
4. the preparation method of core I level 2209 diphasic stainless steel electrode according to claim 1, it is characterized in that: prepare coating and core wire by the designing requirement of welding rod prescription, and applying coating on core wire, make it the shape, the size that reach regulation, drying becomes welding rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510128859.5A CN104999192A (en) | 2015-03-23 | 2015-03-23 | Core I-stage 2209 duplex stainless steel welding rod |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510128859.5A CN104999192A (en) | 2015-03-23 | 2015-03-23 | Core I-stage 2209 duplex stainless steel welding rod |
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| Publication Number | Publication Date |
|---|---|
| CN104999192A true CN104999192A (en) | 2015-10-28 |
Family
ID=54372192
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|---|---|---|---|
| CN201510128859.5A Pending CN104999192A (en) | 2015-03-23 | 2015-03-23 | Core I-stage 2209 duplex stainless steel welding rod |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106583966A (en) * | 2016-12-15 | 2017-04-26 | 昆山京群焊材科技有限公司 | Ultralow-nitrogen austenite stainless steel welding rod for nuclear power |
| CN107127480A (en) * | 2017-06-16 | 2017-09-05 | 上海大西洋焊接材料有限责任公司 | It is a kind of to be used for the low-alloy steel electrode of extra large work rack steel Q690 welding |
| CN107470796A (en) * | 2017-09-29 | 2017-12-15 | 四川西冶新材料股份有限公司 | The bridge supporting welding rod of 800MPa level weathering steels and its production method |
| CN107900559A (en) * | 2017-11-16 | 2018-04-13 | 天津大桥焊材集团有限公司 | A kind of end socket special stainless steel welding rod and preparation method thereof |
| CN108274149A (en) * | 2017-12-15 | 2018-07-13 | 武汉铁锚焊接材料股份有限公司 | A kind of 20 control chromium steel welding rods of nuclear power |
| CN108907494A (en) * | 2018-06-01 | 2018-11-30 | 四川大西洋焊接材料股份有限公司 | Nuclear power AG728 steel electrode and preparation method |
| CN111015007A (en) * | 2018-10-09 | 2020-04-17 | 中国电力科学研究院有限公司 | Welding rod for stainless steel welding and welding method thereof |
| CN112453757A (en) * | 2020-11-20 | 2021-03-09 | 天津大桥龙兴焊接材料有限公司 | Biphase stainless steel welding electrode for chemical ship |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106583966A (en) * | 2016-12-15 | 2017-04-26 | 昆山京群焊材科技有限公司 | Ultralow-nitrogen austenite stainless steel welding rod for nuclear power |
| CN107127480A (en) * | 2017-06-16 | 2017-09-05 | 上海大西洋焊接材料有限责任公司 | It is a kind of to be used for the low-alloy steel electrode of extra large work rack steel Q690 welding |
| CN107127480B (en) * | 2017-06-16 | 2019-06-07 | 上海大西洋焊接材料有限责任公司 | A kind of low-alloy steel electrode for marine worker rack steel Q690 welding |
| CN107470796A (en) * | 2017-09-29 | 2017-12-15 | 四川西冶新材料股份有限公司 | The bridge supporting welding rod of 800MPa level weathering steels and its production method |
| CN107470796B (en) * | 2017-09-29 | 2019-10-11 | 四川西冶新材料股份有限公司 | The bridge mating welding rod of 800MPa grades of weathering steels and its production method |
| CN107900559A (en) * | 2017-11-16 | 2018-04-13 | 天津大桥焊材集团有限公司 | A kind of end socket special stainless steel welding rod and preparation method thereof |
| CN108274149A (en) * | 2017-12-15 | 2018-07-13 | 武汉铁锚焊接材料股份有限公司 | A kind of 20 control chromium steel welding rods of nuclear power |
| CN108907494A (en) * | 2018-06-01 | 2018-11-30 | 四川大西洋焊接材料股份有限公司 | Nuclear power AG728 steel electrode and preparation method |
| CN108907494B (en) * | 2018-06-01 | 2021-01-05 | 四川大西洋焊接材料股份有限公司 | Nuclear power AG728 steel welding rod and preparation method thereof |
| CN111015007A (en) * | 2018-10-09 | 2020-04-17 | 中国电力科学研究院有限公司 | Welding rod for stainless steel welding and welding method thereof |
| CN112453757A (en) * | 2020-11-20 | 2021-03-09 | 天津大桥龙兴焊接材料有限公司 | Biphase stainless steel welding electrode for chemical ship |
| CN112453757B (en) * | 2020-11-20 | 2022-06-17 | 天津大桥龙兴焊接材料有限公司 | Biphase stainless steel welding electrode for chemical ship |
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Application publication date: 20151028 |