CN100396427C - High welding rate, high ductility fluorine alkaline type sintered flux - Google Patents
High welding rate, high ductility fluorine alkaline type sintered flux Download PDFInfo
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- CN100396427C CN100396427C CNB2005100227073A CN200510022707A CN100396427C CN 100396427 C CN100396427 C CN 100396427C CN B2005100227073 A CNB2005100227073 A CN B2005100227073A CN 200510022707 A CN200510022707 A CN 200510022707A CN 100396427 C CN100396427 C CN 100396427C
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Abstract
The present invention relates to a fluorine alkaline type sintered flux with a high welding rate and high ductility, which is composed of the components by the following weight percentage: 24 to 26% of MgO, 17 to 19% of CaF2, 18 to 22% of Al2O3, 22 to 24% of SiO2, 3 to 5% of CaO, less than 7 of MnO, less than 2% of FeO, 2 to 3% of K2O+Na2O, less than 0.04% of S and less than 0.05% of P. In the present invention, the melting point, the viscosity, the surface tension, the alkalinity, etc. of welding flux slag are regulated to improve the slag removal performance of the flux and the surface formability of a welding seam, and thus, a high welding speed is obtained. Arc stabilizers, etc. are added to improve the stability of the combustion of electric arcs, and alloy elements are added to the flux to guarantee that reasonable alloy elements and a reasonable proportion thereof are obtained in the welding seam. Harmful impurities brought by raw materials are reduced, the inclusion and the penetration of harmful impurities of S, P and oxide to the welding seam are limited, and thus, weld metal has good low temperature impact ductility. The present invention can be matched with various welding wires to weld various kinds of low-alloy steel, and favorable welding performance can still be obtained in a high welding speed.
Description
Technical field
The present invention relates to a kind of high welding rate, high ductility fluorine alkaline type sintered flux, be applicable in the submerged arc welding of petroleum and natural gas conveying and use with the higher weldering speed of X series and L series high-grade pipe line steel steel pipe.
Background technology
The used for submerged arc welding solder flux mainly is divided into two kinds: fysed flux and sintered flux, these two kinds of solder flux are in the medium-term and long-term use of the welding of pipeline steel tube, raising along with pipeline intensity, the toughness of user's butt welded seam is had higher requirement, and sintered flux can make weld seam obtain the high toughness index, particularly fluorine alkaline type sintered flux.Sintered flux have can produce continuously, pollution-free, basicity is high, can adapt to the welding of higher-strength steel, and can obtain advantages such as higher plastic property of weld bead and toughness, be widely used in welding such as pressure vessel, metal structure, bridge, shipbuilding, vehicle and petroleum and natural gas conveyance conduit and made.In recent years,, improve speed of welding, guarantee that weld seam has good mechanical performance, particularly toughness index, become a kind of inexorable trend that the pipeline tubulation already develops along with the continuous development of pipeline industry.With the immediate prior art of the present invention be " fluoric alkali high toughness sintering solder " (ZL 01128710.1, CN 1326838A), the speed of welding of this solder flux is lower, has only 1.0～1.5m/min, and has the welding seam toughness big unsettled defective that fluctuates.
Summary of the invention
The technical problem that the present invention solves: design a kind of high welding rate, high ductility fluorine alkaline type sintered flux, guaranteeing to make weld metal have higher plasticity and intensity and good low-temperature impact toughness under the high-speed welding condition.
Mentality of designing of the present invention: 1. because the physical property of solder flux and the raising of speed of welding have confidential relation, therefore, the removability of slag, the face of weld mouldability of solder flux obtained high speed of welding when the fusing point by regulating the solder flux slag, viscosity, surface tension, basicity etc. were improved welding.2. add arc stabilizer etc. and improve the stability of arc burning, in solder flux, add alloying element, to guarantee obtaining rational alloying element and proportioning thereof in the weld seam, reduce the objectionable impurities that brings in the raw material, restriction objectionable impurities S, P and oxide inclusions ooze to weld seam, thereby guarantee under the high-speed welding condition, make weld metal have higher plasticity and intensity and good low-temperature impact toughness.
Technical solution of the present invention: with MgO, Al
2O
3, CaF
2, SiO
2Be the main component of solder flux, by adjusting the viscosity of slag, surface tension, fusing point, granule size, pine dress obtain high speed of welding than waiting height, width, surface flatness and solder flux deslag performance that improves weld seam.Increase a spot of ferroalloy, MnO, CaO simultaneously, guarantee the mechanical performance of weld metal.
The present invention is made of the composition of following heavy percentage:
24＜MgO＜26，17＜CaF
2＜20，Al
2O
3 18～22，22＜SiO
2＜24，CaO 3～5，MnO＜7，FeO＜2，K
2O+Na
2O 2～3，S＜0.04，P＜0.05。
Advantage that the present invention compared with prior art has and effect:
1, (ZL 01128710.1 for the present invention and existing solder flux, CN 1326838A, fluoric alkali high toughness sintering solder) compares, speed of welding can be brought up to 1.5～2.1m/min from 1.0 original～1.5m/min, arc stability in the time of simultaneously can guaranteeing to weld, face of weld is smooth, and the removability of slag is good, welded still pipe lumber recovery height, the production efficiency height.
2, the present invention and H08MnMoTiB (H08C) welding wire coupling, welding L series and X series pipe line steel, under the higher weldering speed of 1.5m/min～2.0m/min, not only the intensity of weld seam and low-temperature flexibility value is higher and very stable, and weld seam has good plasticity, solved the big and unsettled defective of existing solder flux (ZL 01128710.1, CN 1326838A, fluoric alkali high toughness sintering solder) welding seam toughness fluctuation.
3, the present invention can be mated with multiple welding wire, welds multiple low-alloy steel, and weld seam low-temperature impact toughness height still can obtain good welding performance under height weldering speed.
4, through testing (with H08C welding wire coupling) under the higher weldering speed of solder flux BGSJ101-G of the present invention at 1.5m/min～2.0m/min, no matter be under-20 ℃, or under-30 ℃, the intensity of weld seam and notched bar impact strength are all very high and very stable, impact flexibility mean value at-20 ℃ of following weld seams can reach 110J, can reach 98.7J at the impact flexibility mean value of-30 ℃ of following weld seams, is higher than standard-required far away, and the section of shear all reaches 100%, tensile strength 〉=580MPa.(see annex for details: the BGSJ101-G of welded still pipe research institute of China National Petroleum Corporation (CNPC) solder flux test situation is reported).
The specific embodiment
Embodiment one:
1, component (wt%): MgO 25.52, CaF
219.72, Al
2O
318.98, SiO
223.45, CaO3.73, MnO 5.18, and FeO 1.06, K
2O+Na
2O 2.321, and S 0.004, and P 0.035.
2; preparation method: after the needed raw material reinspection; be ground into the powdery of various criterion granularity; carrying out proportioning according to prescription after sieving weighs; put dried agitator then into and do stirring; put into wet agitator after stirring; add the stirring of wetting of about 20% waterglass; after stirring; send into comminutor and carry out granulation; the granular flux of producing is sent into drying oven after heated-air drying; under 150 ℃-200 ℃ temperature, dry, sieve after sloughing its moisture, sieve out solder flux in the standard particle size scope and send into sintering furnace and carry out sintering; 800 ℃-900 ℃ of sintering temperatures; about sintering time 1 hour, come out of the stove after check; sieve; packing; warehouse-in, all process steps of solder flux production is finished.
Embodiment two: component (wt%): MgO 25.81, CaF
218.67, Al
2O
320.22, SiO
222.54 CaO 3.66, MnO 5.52, and FeO 1.22, K
2O+Na
2O 2.321, and S 0.004, and P 0.035.The preparation method is identical with embodiment one.
Embodiment three: component (wt%): MgO 24.87, CaF
218.42, Al
2O
321.63, SiO
222.24 CaO 4.23, MnO 5.09, and FeO 1.16, K
2O+Na
2O 2.321, and S 0.004, and P 0.035.The preparation method is identical with embodiment one.
Result of the test of the present invention (see annex for details: BGSJ101-G solder flux test situation is reported):
(1) welding condition:
(2) chemical analysis parameter:
(3) weld seam impact toughness:
(4) bend test result:
| Test number | Bead direction | Material | Bending direction | The cambered axle diameter | The clod wash angle | Result of the test |
| 1 | Weld seam is horizontal | L360 | Just | 28 | 180° | Qualified |
| 2 | Weld seam is horizontal | L360 | Instead | 28 | 180° | Qualified |
(5) Hardness Surveillance: (HV
10)
Claims (1)
1. high welding rate, high ductility fluorine alkaline type sintered flux is characterized in that this solder flux is made of the composition of following weight percentage:
24＜MgO＜26，17＜CaF
2＜20，18≤Al
2O
3≤22，22＜SiO
2＜24，3≤CaO≤5，MnO＜7，FeO＜2，2≤K
2O+Na
2O≤3，S＜0.04，P＜0.05。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100227073A CN100396427C (en) | 2005-12-20 | 2005-12-20 | High welding rate, high ductility fluorine alkaline type sintered flux |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100227073A CN100396427C (en) | 2005-12-20 | 2005-12-20 | High welding rate, high ductility fluorine alkaline type sintered flux |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1788920A CN1788920A (en) | 2006-06-21 |
| CN100396427C true CN100396427C (en) | 2008-06-25 |
Family
ID=36787138
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005100227073A Expired - Fee Related CN100396427C (en) | 2005-12-20 | 2005-12-20 | High welding rate, high ductility fluorine alkaline type sintered flux |
Country Status (1)
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Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102218623B (en) * | 2011-05-26 | 2013-05-01 | 四川大西洋焊接材料股份有限公司 | Welding flux for X100 pipe line steel submerged arc-welding and preparation method thereof |
| CN103192196B (en) * | 2013-04-26 | 2015-09-09 | 宝鸡石油钢管有限责任公司 | A kind of fast sintered flux of high tenacity height weldering being applicable to the submerged arc welding of X90/X100 ultra high-strength pipeline steel pipe |
| CN103386557B (en) * | 2013-07-06 | 2016-03-09 | 宝鸡石油钢管有限责任公司 | One is applicable to the anti-corrosion pipeline steel tube of X70MS sintered flux used for submerged arc welding |
| CN105234589B (en) * | 2014-11-21 | 2017-09-05 | 宝鸡市宇生焊接材料有限公司 | A kind of Q500qE steel sintered flux used for submerged arc welding and preparation method thereof |
| CN104708230B (en) * | 2015-03-02 | 2016-10-12 | 武汉天高熔接股份有限公司 | High efficiency sintered flux and production technology thereof |
| CN106041371B (en) * | 2016-07-04 | 2018-10-19 | 常州大学 | A kind of smelting type welding flux used for submerged arc welding and its preparation method and application |
| JP6913463B2 (en) * | 2017-01-05 | 2021-08-04 | 株式会社神戸製鋼所 | Backing flux |
| JP7078436B2 (en) * | 2018-03-29 | 2022-05-31 | 株式会社神戸製鋼所 | Flux for submerged arc welding and its manufacturing method |
| CN108581274A (en) * | 2018-04-27 | 2018-09-28 | 西峡县西保冶金材料有限公司 | A kind of wind tower low hydrogen, high toughness sintered flux and preparation method thereof |
Citations (7)
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|---|---|---|---|---|
| GB979457A (en) * | 1960-10-24 | 1965-01-06 | Union Carbide Corp | Improvements in and relating to compositions |
| GB1021923A (en) * | 1962-06-21 | 1966-03-09 | Soudure Autogene Elect | Process of electrical welding by fusion |
| CN86102751B (en) * | 1986-04-21 | 1987-12-02 | 自贡中国电焊条厂 | Sintering flux with ultra-low hydrogen and high alkaline sintered by high temp. |
| CN1013086B (en) * | 1988-08-12 | 1991-07-10 | 国家机械工业委员会哈尔滨焊接研究所 | A kind of high-basicity sintered flux |
| CN1030293C (en) * | 1994-02-28 | 1995-11-22 | 冶金工业部钢铁研究总院 | Electric slag bead welding flux |
| CN1034265C (en) * | 1994-06-14 | 1997-03-19 | 冶金工业部钢铁研究总院 | ultra-low-hydrogen and high-basicity sintered flux |
| CN1228168C (en) * | 2001-07-04 | 2005-11-23 | 宝鸡市永定石油钢管焊接材料有限公司 | Fluoric alkali high toughness sintering solder |
-
2005
- 2005-12-20 CN CNB2005100227073A patent/CN100396427C/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB979457A (en) * | 1960-10-24 | 1965-01-06 | Union Carbide Corp | Improvements in and relating to compositions |
| GB1021923A (en) * | 1962-06-21 | 1966-03-09 | Soudure Autogene Elect | Process of electrical welding by fusion |
| CN86102751B (en) * | 1986-04-21 | 1987-12-02 | 自贡中国电焊条厂 | Sintering flux with ultra-low hydrogen and high alkaline sintered by high temp. |
| CN1013086B (en) * | 1988-08-12 | 1991-07-10 | 国家机械工业委员会哈尔滨焊接研究所 | A kind of high-basicity sintered flux |
| CN1030293C (en) * | 1994-02-28 | 1995-11-22 | 冶金工业部钢铁研究总院 | Electric slag bead welding flux |
| CN1034265C (en) * | 1994-06-14 | 1997-03-19 | 冶金工业部钢铁研究总院 | ultra-low-hydrogen and high-basicity sintered flux |
| CN1228168C (en) * | 2001-07-04 | 2005-11-23 | 宝鸡市永定石油钢管焊接材料有限公司 | Fluoric alkali high toughness sintering solder |
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| Publication number | Publication date |
|---|---|
| CN1788920A (en) | 2006-06-21 |
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