CN1923431A - High ductility climate resistant solder stick with tensile strength of 600MPa - Google Patents
High ductility climate resistant solder stick with tensile strength of 600MPa Download PDFInfo
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- CN1923431A CN1923431A CN 200510029192 CN200510029192A CN1923431A CN 1923431 A CN1923431 A CN 1923431A CN 200510029192 CN200510029192 CN 200510029192 CN 200510029192 A CN200510029192 A CN 200510029192A CN 1923431 A CN1923431 A CN 1923431A
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Abstract
The invention relates to a high-flexibility welding bar whose tensile strength is 600MPa. Wherein, its components comprise that marble at 6-42;derbyshire spar at 16-22;ferrotitanium at 9-12;medium-carbon ferromanganese at 4-6; ferrosilicium at 1-3;synthetic mica at 1-3;micro silicon powder at 1-3;iron powder at 12-18;chrome metal at 1-2;copper powder at 0.5-1; nickel at 1-2;molybdenum at 0.3-0.8; and titanium white at 2-5. The inventive product has better corrosion resistance, with better low-temperature impact flexibility at -40Deg. C; and its yield strength is higher than 500MPa;tensile strength is higher than 600MPa; extensibility is higher than 20%;and (-40Deg. C) Akv>=60J.
Description
Technical field
The invention belongs to field of welding material, particularly high strength, the weather-proof welding rod of high tenacity.
Background technology
Also do not find yield strength 〉=500MPa in the market, tensile strength 〉=600MPa, the weather-proof welding rod of high-strength and high ductility of CVN impact flexibility Akv 〉=60J in the time of-40 ℃.
The weathering steel welding rod has: Cu-P, Cr-Cu, Ni-Cu, W-Cu, Cr-Ni-Cu alloy system.Cu-P be welding rod because of containing the P height, toughness and weldability are relatively poor, use less; Cr-Cu, Ni-Cu, W-Cu alloy system can not well match with high-strength weathering steel Q500NQR1 and the Q550NQR1 of tensile strength 600MPa.
But do not have at present tensile strength 600MPa the weathering steel welding rod.The Cr-Ni-Mo-Cu alloy system that patent of the present invention adopts.Therefore can select J606RH as the reference welding rod.
Other weathering steel welding rod patent of regular tenacity level has one: high-efficiency weather proof irons steel welding rod, it is the W-Cu alloy system.
Higher with the welding rod requirement of strength of high-strength weathering steel coupling, and, therefore design Ni, Cr, the Cu that contains volume in the welding rod requirement deposited metal because of atmospheric corrosion resistance is had higher requirements, Cr wherein, Cu worsen weldability, and low-temperature impact toughness is bad, A
KV(40 ℃) are difficult for reaching the steel instructions for use.
Summary of the invention
The object of the present invention is to provide the weather-proof welding rod of high tenacity of a kind of tensile strength 600MPa, with the high-strength weathering steel Q500NQR1 of solution tensile strength 600MPa and the supporting stick electrode problem of Q550NQR1.
For achieving the above object, technical scheme of the present invention is, the weather-proof welding rod of the high tenacity of tensile strength 600MPa, and its composition quality percentage is:
Marble 36-42; Fluorite 16-22; Ferro-titanium 9-12; Mid-carbon fe-mn 4-6; Ferrosilicon 451-3; Synthetic mica 40 order 1-3; SILICA FUME 1-3; Iron powder 12-18; Crome metal 1-2; Copper powder 0.5-1; Nickel powder 1-2; Metal molybdenum 0.3-0.8; Titanium dioxide 2-5.
The factor of decision welding rod performance mainly is the prescription design of welding rod.By accurate adjustment CaCO
3-CaF
2-SiO
2Slag system adds an amount of ferroalloy, appropriate design welding rod prescription in slag system.The welding rod of development has good atmospheric corrosion resistance and good all-position welding processing performance, and mechanical property satisfies instructions for use fully, has good cracking resistance and good plasticity and toughness, A
KV(40 ℃) are generally greater than 100J.
According to the mechanical property requirements of welding rod deposited metal, to the requirement height of its impact flexibility and plasticity, and consider the site operation facility, the Hi-Stren steel slag system is decided to be low hydrogen potassium type.The welding rod slag system is with CaCO
3-CaF
2-SiO
2Be main.
Consider the required atmospheric corrosion resistance of weld metal,, cooperate raising atmospheric corrosion resistances such as adding Cr, Ni, Mo based on Cu.Cu can effectively improve the weld seam atmospheric corrosion resistance, but butt welded seam toughness is unfavorable, and when Cu content was between 0.20～0.40% in pilot seam, weld seam met the demands.
According to weld properties, tentatively determine alloy system.The consideration weld strength is had relatively high expectations, and selects for use the C-Mn-Si-Cr-Ni-Mo alloy system to strengthen, and for improving welding seam toughness, should impel weld metal to form more acicular ferrite, and the control impurity content, as S, P, H, O, N etc.
C, Mn, Si are the most frequently used weld metal intensified elements.C height, weld seam have bigger crackle tendency, and weld metal C content should be strict controlled in 0.10%.Mn, Si addition are at (3-7) in coating: 1 o'clock, good deoxidation is arranged, and Mn is an austenizer, Mn also has the effect of desulfurization simultaneously, suitably improves the Mn amount that contains, can be when improving intensity, improve weld metal toughness, weld metal Mn content should be controlled at 0.8-1.6%.In Hi-Stren steel, under the situation that guarantees deoxidation, reduce Si content as far as possible, the butt welded seam metal toughness is favourable, and Si content is advisable less than 0.3%.
Cr can improve weld metal intensity and decay resistance, is ferritisey, but at content more after a little while, improve weld metal toughness, consider the influence of its butt welded seam intensity, atmospheric corrosion resistance, control Cr content is in 0.4-0.8%.Ni is an austenizer, can improve weld metal toughness and decay resistance.Add a small amount of Mo in the weld seam and not only improve weld strength, improve weld metal toughness simultaneously, and can reduce temper brittleness, but the Mo too high levels can make weld metal toughness descend, Mo content is controlled in the 0.15-0.35%.
Contain a certain amount of Ti in the weld metal, but deoxidation, denitrogenation, but and crystal grain thinning, to improvement improve weld metal plasticity, toughness is favourable.
Marble (main component CaCO in the hydrogen controlled electrode
3) and fluorite (main component CaF
2) total addition between 50-70%.Marble is gas-forming agent, is slag former again, but make weld seam oxygenation simultaneously in welding process; Fluorite is a slag former, but the effect of shoddye is also arranged simultaneously, and the fluorite fusing point is low, can reduce the coating fusing point, obvious dehydrogenation effect is arranged, and can improve the removability of slag.The proportioning of general marble and fluorite is adjusted its proportioning, so that welding rod has better processing performance between 1.5-2.5.
Coating adds a small amount of synthetic mica (silicate) and SILICA FUME, and (main component is SiO
2) be used for slag making.Synthetic mica can improve the physical property of basic slag, also can improve the extrusion performance of welding rod oil pressure.Add a little amount of titanium white powder (main component TiO
2), can improve welding technological properties.
Coating adds an amount of ferro-titanium, ferromanganese, ferrosilicon combined deoxidation.Ferro-titanium is main deoxidier, and can improve the usability of electrode energy, not only can improve appearance of weld an amount of the adding, makes weld ripples smooth and have glossiness, also can improve weld properties.But ferromanganese deoxidation, desulfurization, but ferrosilicon deoxidation all can improve weld strength, and can accelerate to weld reaction speed, but excessive ferromanganese, ferrosilicon influence appearance of weld.
Aspect slag making, accurately adjust CaO-CaF
2-SiO
2The slag system relation; Aspect the ferroalloy combined deoxidation, carry out repetition test, draw ferro-titanium, ferromanganese, ferrosilicon three and use magnitude relation.Obtain satisfied welding technological properties.
In coating, add an amount of iron powder, improve actual welding rod efficient and arc stability and restarting performance.
Iron powder, crome metal, copper powder, nickel powder, metal molybdenum is to guarantee that weld metal has good atmospheric corrosion resistance and mechanical property.By adjusting prescription, reach denitrogenation, dehydrogenation, control oxygen content purpose, and S, P and crystallization water content in the raw material is controlled in strictness, impel weld seam to form more acicular ferrite, thereby make weld seam satisfy requirements such as anti-atmospheric corrosive nature, intensity, impact flexibility, plasticity.
Wire rod of the present invention, welding wire compared with prior art have following advantage:
1. welding rod gained deposited metal of the present invention and welding point have good atmospheric corrosion resistance, have good comprehensive performances simultaneously, and especially-40 ℃ low-temperature impact toughness is fine.
2. the combination property of welding rod gained deposited metal of the present invention is: yield strength: 〉=500MPa; Tensile strength: 〉=600MPa; Percentage elongation: 〉=20%; Akv 〉=the 60J of (40 ℃ condition under).
The specific embodiment
Coating recipe embodiment sees Table 1, and core wire is H08A; Table 2 is depicted as the chemical composition of welding rod deposited metal.
Table 1 is implemented welding rod coating recipe example mass percent
| Embodiment | Marble | Fluorite | Ferro-titanium | Mid-carbon fe-mn | 45% ferrosilicon | Synthetic mica 40 orders | SILICA FUME | Iron powder | Crome metal | Copper powder | Nickel powder | Metal molybdenum | Titanium dioxide |
| 1 | 39 | 16 | 11 | 5 | 2 | 3 | 3 | 9 | 1.6 | 1.0 | 1.7 | 0.5 | 2.0 |
| 2 | 40 | 18 | 10 | 4 | 1 | 3 | 2 | 11 | 1.0 | 0.7 | 2 | 0.5 | 4 |
| 3 | 41 | 19 | 9 | 4 | 1 | 2 | 1 | 10 | 2.0 | 0.6 | 1.3 | 0.6 | 3 |
| 4 | 42 | 17 | 9 | 5 | 3 | 1 | 2 | 10 | 2.0 | 0.8 | 1 | 0.8 | 5 |
| 5 | 36 | 22 | 12 | 6 | 2 | 2 | 1 | 12 | 1.3 | 0.5 | 1.8 | 0.3 | 4 |
| 6 | 38.7 | 17 | 11 | 5 | 2 | 3 | 3 | 14 | 1.3 | 0.8 | 1.8 | 0.4 | 2.0 |
| 7 | 40 | 18 | 10 | 4.5 | 1.5 | 3 | 2.5 | 14 | 1.2 | 0.6 | 2 | 0.4 | 2.3 |
| 8 | 41 | 19 | 9 | 4 | 1 | 2 | 1 | 16 | 1.5 | 0.5 | 1.6 | 0.6 | 2.8 |
Table 2 is implemented the chemical composition (mass percent) of welding rod deposited metal
| Embodiment | C | Mn | Si | S | P | Cr | Ni | Mo | Cu |
| 1 | 0.077 | 0.98 | 0.18 | 0.005 | 0.010 | 0.48 | 0.68 | 0.18 | 0.33 |
| 2 | 0.077 | 0.89 | 0.15 | 0.006 | 0.014 | 0.43 | 0.77 | 0.18 | 0.25 |
| 3 | 0.064 | 0.80 | 0.12 | 0.005 | 0.012 | 0.50 | 0.58 | 0.20 | 0.23 |
| 4 | 0.082 | 1.05 | 0.16 | 0.006 | 0.012 | 0.50 | 0.50 | 0.26 | 0.28 |
| 5 | 0.060 | 1.15 | 0.10 | 0.006 | 0.010 | 0.45 | 0.70 | 0.12 | 0.18 |
| 6 | 0.077 | 0.98 | 0.18 | 0.005 | 0.010 | 0.48 | 0.68 | 0.18 | 0.33 |
| 7 | 0.077 | 0.89 | 0.15 | 0.006 | 0.014 | 0.43 | 0.77 | 0.18 | 0.25 |
| 8 | 0.064 | 0.80 | 0.12 | 0.005 | 0.012 | 0.50 | 0.58 | 0.20 | 0.23 |
Wherein, ferrosilicon is selected 45%, 65% and 75% ferrosilicon for use, when mixing with waterglass when make welding rod summer, and easily foaming, 45% ferrosilicon effect is better.
Synthetic mica is selected 20 orders, 40 orders, 60 orders, 100 purpose synthetic micas for use, and wherein, 40 order synthetic micas are compared with 60 orders, 100 purposes, and particle is thicker, and adhesion is big, winter the welding rod epidermis be difficult for crack initiation, 40 purpose synthetic mica test effects are better.
Table 3 is depicted as the mechanical property of embodiment of the invention welding rod and contrast welding rod deposited metal thereof, and therefrom as can be seen, the performance of welding rod deposited metal of the present invention all can reach high strength, high-elongation and high low-temperature impact toughness.
Table 3 is implemented the mechanical property of welding rod deposited metal
| Embodiment | Tensile strength sigma b (MPa) | Yield strength σ s (Mpa) | Percentage elongation δ 5 (%) | V-type impact absorbing energy A KV(J)(-40℃) |
| 1 | 645 | 560 | 26 | 98 |
| 2 | 650 | 565 | 24 | 109 |
| 3 | 630 | 545 | 24 | 90 |
| 4 | 660 | 565 | 23 | 88 |
| 5 | 615 | 525 | 28 | 120 |
| 6 | 644 | 559 | 26 | 98 |
| 7 | 648 | 566 | 24 | 109 |
| 8 | 630 | 545 | 24 | 90 |
| Comparative Examples J606RH | ≥610 | ≥490 | ≥17 | ≥47 |
What atmospheric exposure test was adopted is indoor accelerate corrosion test (cycle is soaked into corrosion test), all compares with the mother metal Q500NQR1 with high-weatherability, and result of the test sees Table 4.
Table 4 is implemented the corrosive nature of welding rod deposited metal
| Embodiment | Corrosion weight loss amount g/m 2 | Relative rate of corrosion |
| 1 | 72.5 | 0.7％ |
| 2 | 73.0 | 1.1％ |
| 3 | 71.8 | 0.3％ |
| 4 | 72.8 | 1.1％ |
| 5 | 73.1 | 1.5％ |
| Comparative Examples Q500NQR1 | 72.0 | / |
Annotate: relative rate of corrosion=| mother metal weight loss-deposited metal weight loss |/mother metal weight loss; Numerical value is more little, illustrates that weatherability is suitable.
Table 4 is depicted as the corrosive nature of embodiment welding rod deposited metal, and the relative rate of corrosion of embodiment welding rod is far smaller than 10%, and therefore, the atmospheric corrosion resistance ability and the mother metal of table 4 explanation welding rod deposited metal are suitable.
Claims (3)
1. the weather-proof welding rod of the high tenacity of tensile strength 600MPa, its composition quality percentage is:
Marble 36-42
Fluorite 16-22
Ferro-titanium 9-12
Mid-carbon fe-mn 4-6
Ferrosilicon 1-3
Synthetic mica 1-3
SILICA FUME 1-3
Iron powder 12-18
Crome metal 1-2
Copper powder 0.5-1
Nickel powder 1-2
Metal molybdenum 0.3-0.8
Titanium dioxide 2-5.
2. the weather-proof welding rod of high tenacity as claimed in claim 1 is characterized in that ferrosilicon is 45% ferrosilicon.
3. the weather-proof welding rod of high tenacity as claimed in claim 1 is characterized in that, synthetic mica is 40 order synthetic micas.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB200510029192XA CN100430177C (en) | 2005-08-29 | 2005-08-29 | High ductility climate resistant solder stick with tensile strength of 600MPa |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB200510029192XA CN100430177C (en) | 2005-08-29 | 2005-08-29 | High ductility climate resistant solder stick with tensile strength of 600MPa |
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| Publication Number | Publication Date |
|---|---|
| CN1923431A true CN1923431A (en) | 2007-03-07 |
| CN100430177C CN100430177C (en) | 2008-11-05 |
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|---|---|---|---|
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| CN100460135C (en) * | 2007-03-30 | 2009-02-11 | 沈阳航空工业学院 | Gas protected welding wire in 600 MPa level |
| CN101362258B (en) * | 2008-09-25 | 2010-09-08 | 哈尔滨工业大学 | Novel electric welding rod |
| CN102248329A (en) * | 2011-06-27 | 2011-11-23 | 天津市金桥焊材集团有限公司 | High-strength high-tenacity welding rod for E-grade cast steel repair welding |
| CN102689115A (en) * | 2012-06-11 | 2012-09-26 | 天津大桥焊材集团有限公司 | High-toughness and high-strength steel electrode for 60kg all position welding |
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| CN101362258B (en) * | 2008-09-25 | 2010-09-08 | 哈尔滨工业大学 | Novel electric welding rod |
| CN102248329A (en) * | 2011-06-27 | 2011-11-23 | 天津市金桥焊材集团有限公司 | High-strength high-tenacity welding rod for E-grade cast steel repair welding |
| CN102248329B (en) * | 2011-06-27 | 2012-12-26 | 天津市金桥焊材集团有限公司 | High-strength high-tenacity welding rod for E-grade cast steel repair welding |
| CN102689115A (en) * | 2012-06-11 | 2012-09-26 | 天津大桥焊材集团有限公司 | High-toughness and high-strength steel electrode for 60kg all position welding |
| CN102689115B (en) * | 2012-06-11 | 2014-08-20 | 天津大桥焊材集团有限公司 | High-toughness and high-strength steel electrode for 60kg all position welding |
| CN103817463A (en) * | 2012-11-16 | 2014-05-28 | 李彬 | High-strength welding rod |
| CN103008923A (en) * | 2012-12-21 | 2013-04-03 | 西安理工大学 | Low-hydrogen basic welding rod for welding 1Ni9 steel and preparation method thereof |
| CN103008923B (en) * | 2012-12-21 | 2015-06-24 | 西安理工大学 | Low-hydrogen basic welding rod for welding 1Ni9 steel and preparation method thereof |
| CN103264234B (en) * | 2013-04-26 | 2016-01-20 | 中国船舶重工集团公司第七二五研究所 | A kind of heat resistant steel electrode with low-temperature impact toughness |
| CN103264234A (en) * | 2013-04-26 | 2013-08-28 | 中国船舶重工集团公司第七二五研究所 | Heat-resistant steel welding rod with low temperature impact toughness |
| CN103934592A (en) * | 2014-04-18 | 2014-07-23 | 上海电力修造总厂有限公司 | Core wire and coating of 55-kilogram-level weather resistant steel welding rod, welding rod and preparing method |
| CN105458553A (en) * | 2015-12-10 | 2016-04-06 | 无锡普瑞明思机械制造有限公司 | Memory type welding electrode |
| CN106624455A (en) * | 2017-03-21 | 2017-05-10 | 天津大桥焊材集团有限公司 | Ultralow hydrogen high-strength steel welding rod used for welding 100 kg class water-electricity pressure steel pipe and preparing method thereof |
| CN107598414A (en) * | 2017-10-26 | 2018-01-19 | 天津市金桥焊材集团有限公司 | A kind of marine atmosphere corrosion-resisting steel welding rod |
| 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 |
| CN110802342A (en) * | 2019-12-03 | 2020-02-18 | 四川西冶新材料股份有限公司 | High-strength weathering steel Q550NQR1 and Q550qNH matched welding rod |
| CN112975194A (en) * | 2021-02-09 | 2021-06-18 | 天津市金桥焊材集团股份有限公司 | Low-yield-ratio high-strength weathering resistant steel welding rod |
| CN114538449A (en) * | 2022-02-10 | 2022-05-27 | 贵州理工学院 | Method for preparing industrial silicon refining slag agent by using micro silicon powder as raw material |
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Address after: 201900, Fujin Road, Shanghai, Baoshan District orchard Co-patentee after: Tianjin Jinqiao Welding Materials Group Co.,Ltd. Patentee after: BAOSHAN IRON & STEEL Co.,Ltd. Address before: 201900, Fujin Road, Shanghai, Baoshan District orchard Co-patentee before: TIANJIN GOLDEN BRIDGE WELDING MATERIALS GROUP Co.,Ltd. Patentee before: BAOSHAN IRON & STEEL Co.,Ltd. |