CN101913032A - Special self-protection flux-cored wire for resurfacing rail - Google Patents
Special self-protection flux-cored wire for resurfacing rail Download PDFInfo
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- CN101913032A CN101913032A CN 201010262259 CN201010262259A CN101913032A CN 101913032 A CN101913032 A CN 101913032A CN 201010262259 CN201010262259 CN 201010262259 CN 201010262259 A CN201010262259 A CN 201010262259A CN 101913032 A CN101913032 A CN 101913032A
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- resurfacing
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Abstract
The invention relates to a special self-protection flux-cored wire for resurfacing a rail, which is manufactured by using cold-rolled low-carbon steel strip as a raw material and adopting a conventional flux-cored transition alloy mode , a universal powder specification and a flux-cored wire production process. The flux-cored wire comprises the following components of 12-15 percent of calcium fluoride, 10-20 percent of barium fluoride, 4-5 percent of aluminium oxide, 10-20 percent of aluminium magnesium alloy, 3-5 percent of iron powder, 5-6 percent of high carbon ferromanganese, 8-10 percent of metallic nickel, 3-5 percent of chrome, 1-3 percent of molybdenum and the balance of calcium carbonate. The flux-cored wire is used for semi-automatic welding or fully-automatic welding, can be continuously conveyed without gas shielding, and has the advantages of strong wind resistance, low cost, good welding quality, easy operation, excellent process and mechanical properties, stable electric arc, small sputtering and attractive formation.
Description
(1) technical field:
The invention belongs to field of welding material, particularly a kind of self-protection flux-cored wire that is used for the resurfacing of rail.
(2) background technology:
Along with the fast development of railway construction in China, the rail demand also increases sharply, and imbalance between supply and demand will become increasingly conspicuous.Therefore, rationally use old rail, prolong rail service life, not only have great Technological Economy and be worth, and to improving circuit quality, security of operation also has positive impact.
Automatically the research and development of soldering, its purpose is exactly under the new situation, utilize current science and technology development, with new control able to programme and computer technology, realize the automation of welding repair process, under reaching the human factor influence of getting rid of in the operation, realize guaranteeing joint quality and technology stability by technical equipment, and be the commanding elevation with this technology, can make a large amount of old rails be repaired use.Therefore, will have important social and economic benefit with the resurfacing of rail of automatic soldering complete sets of Techniques with the development of self-protection flux-cored wire.Present this type of welding material, complicated component and costing an arm and a leg.
(3) summary of the invention:
The objective of the invention is provides a kind of special self-protection flux-cored wire for resurfacing rail at above-mentioned existing problems, and this flux-cored wire has good mechanical performance and processing performance and with low cost.
Technical scheme of the present invention:
A kind of special self-protection flux-cored wire for resurfacing rail; with SPCC-SD cold-rolled low carbon steel steel band is raw material; adopt conventional medicine core transition alloy mode and general medicinal powder specification and the manufacturing of flux-cored wire production technology; the prescription of welding wire medicine core is by calcium carbonate; calcirm-fluoride; barium fluoride; alundum (Al; mass percent is 1: 1 a almag; iron powder; high carbon ferromanganese; metallic nickel; crome metal and metal molybdenum constitute, and its percentage by weight is: calcirm-fluoride 12-15%; barium fluoride 10-20%; alundum (Al 4-5%; mass percent is 1: 1 almag 10-20%; iron powder 3-5%; high carbon ferromanganese 5-6%; metallic nickel 8-10%; crome metal 3-5%; metal molybdenum 1-3%; surplus is a calcium carbonate.
Formulation analysis of the present invention:
In the present invention, calcium carbonate CaCO
3Main effect be stabilising arc, slag making and gas making, its content influence is to the manufacturability of self-protection flux-cored wire, when content is too low, is difficult for forming short slag, slag solidifies too slow, is not suitable for multi-pass welding; When content is too high, then easily produce the welding pore, common content selects 30%～40% to be advisable.
CaF
2Have strong shoddye effect, its content is as being lower than 12%, then the shoddye scarce capacity; Surpass 15% as content, the self-protection flux-cored wire arc stability descends.BaF
2Mainly can support very short electric arc when welding, this has two advantages: the one, under a certain given welding current, can reduce arc energy and welding wire burning velocity, and make the operator can control the molten bath better; The 2nd, arc voltage is low, electric arc is short, the nitrogen that molten drop absorbs when so just having reduced the self-protection flux-cored wire welding, BaF
2Content is crossed and low or too highly all can be influenced its processing performance.
The main effect of alundum (Al is to regulate slag fusing point and setting temperature, and its content is at 4-5%.Almag is a kind of material commonly used in the self-protection flux-cored wire, and aluminium wherein, magnesium belong to strong deoxidier and denitrifier, as are less than at 10% o'clock, then easily produces the welding pore; As be higher than 20%, and impact flexibility is descended significantly, its content is at 10-20%.Iron powder is mainly used in the adjusting manufacturability, guarantees arc stability, and can improve welding efficiency, and content is 3-5% in the present invention.High carbon ferromanganese uses as deoxidier and alloying constituent, and its content is 5-6% in the present invention.
Metallic nickel helps improving the mechanical property of weld seam, particularly can improve low-temperature flexibility, and in the present invention, for guaranteeing welding performance, its content is at 8-10%, and too high levels then increases manufacturing cost.Crome metal uses as alloying constituent, and its content is 3-5% in the present invention.Metal molybdenum is used as alloying constituent, and its content is 1-3% in the present invention
The handling characteristics of special self-protection flux-cored wire for resurfacing rail is to carry out full-automatic continuous welding on the rail mean place; require the welding wire arc stability; do not drop down slag, do not flow molten iron, appearance of weld is good, spatter is little, anti-pore ability is strong; for this reason; molten drop will be the spurting transition, and fusion temperature, the setting temperature of slag of welding medicine core, surface tension all should be suitable.Simultaneously, by transition alloy elements in the medicine core, to guarantee intensity, toughness, plasticity and the hardness etc. of weld seam.
Advantage of the present invention is: 1, special self-protection flux-cored wire for resurfacing rail can be used for semiautomatic welding or full automatic welding, have continuous wire feed, without gas shield, wind loading rating is strong, production efficiency is high, integrated cost is low, welding quality is good, be easy to advantages such as welder's operation; 2, have good technological operation performance and mechanical property, arc stability, little, the good operability of splashing and moulding are attractive in appearance.
(4) specific embodiment:
Embodiment 1:
A kind of special self-protection flux-cored wire for resurfacing rail; adopting common commercially available SPCC-SD cold-rolled low carbon steel steel band is raw material; adopt conventional medicine core transition alloy mode and general medicinal powder specification and the manufacturing of flux-cored wire production technology, the percentage by weight prescription of welding wire medicine core is calcium carbonate CaCO
334%, calcirm-fluoride CaF
213%, barium fluoride BaF
215%, alundum (Al Al
2O
34%, mass percent is 1: 1 almag 12%, iron powder 4%, high carbon ferromanganese 5%, metallic nickel 8%, crome metal 3%, a metal molybdenum 2%.The special self-protection flux-cored wire for resurfacing rail made of prescription thus; mechanical property detection through deposited metal is: Rm835 (N/mm2), Rel/Rp0.2 715 (N/mm2), A13%, KU2 normal temperature 70J, 65J, 67J, Brinell hardness (HB) 315,324,320.The practice that this welding wire is used for the resurfacing of rail shows that processing performance and result of use are good.
Embodiment 2:
A kind of special self-protection flux-cored wire for resurfacing rail; with common commercially available SPCC-SD cold-rolled low carbon steel steel band is raw material; adopt conventional medicine core transition alloy mode and general medicinal powder specification and the manufacturing of flux-cored wire production technology, the percentage by weight prescription of welding wire medicine core is calcium carbonate CaCO
336%, calcirm-fluoride CaF
212%, barium fluoride BaF
214%, alundum (Al Al
2O
34%, mass percent is 1: 1 almag 10%, iron powder 3%, high carbon ferromanganese 6%, metallic nickel 9%, crome metal 4%, a metal molybdenum 2%.The special self-protection flux-cored wire for resurfacing rail made of prescription thus; mechanical property detection through deposited metal is: Rm890 (N/mm2), Rel/Rp0.2 755 (N/mm2), A8%; KU2 normal temperature 54J, 63J, 58J, Brinell hardness (HB) 356,364,348.The practice that this welding wire is used for the resurfacing of rail shows that processing performance and result of use are good.
Embodiment 3:
A kind of special self-protection flux-cored wire for resurfacing rail; with common commercially available SPCC-SD cold-rolled low carbon steel steel band is raw material; adopt conventional medicine core transition alloy mode and general medicinal powder specification and the manufacturing of flux-cored wire production technology, the percentage by weight prescription of welding wire medicine core is calcium carbonate CaCO
332%, calcirm-fluoride CaF
214%, barium fluoride BaF
216%, alundum (Al Al
2O
34%, mass percent is 1: 1 almag 12%, iron powder 3%, high carbon ferromanganese 5%, metallic nickel 9%, crome metal 3%, a metal molybdenum 2%.The special self-protection flux-cored wire for resurfacing rail made of prescription thus; mechanical property detection through deposited metal is: Rm865 (N/mm2), Rel/Rp0.2 735 (N/mm2), A17%; KU2 normal temperature 93J, 90J, 95J, Brinell hardness (HB) 329,331,325.The practice that this welding wire is used for the resurfacing of rail shows that processing performance and result of use are good.
Claims (4)
1. special self-protection flux-cored wire for resurfacing rail; with SPCC-SD cold-rolled low carbon steel steel band is raw material; adopt conventional medicine core transition alloy mode and general medicinal powder specification and the manufacturing of flux-cored wire production technology; it is characterized in that: the prescription of welding wire medicine core is by calcium carbonate; calcirm-fluoride; barium fluoride; alundum (Al; mass percent is 1: 1 a almag; iron powder; high carbon ferromanganese; metallic nickel; crome metal and metal molybdenum constitute, and its percentage by weight is: calcirm-fluoride 12-15%; barium fluoride 10-20%; alundum (Al 4-5%; mass percent is 1: 1 almag 10-20%; iron powder 3-5%; high carbon ferromanganese 5-6%; metallic nickel 8-10%; crome metal 3-5%; metal molybdenum 1-3%; surplus is a calcium carbonate.
2. according to the described special self-protection flux-cored wire for resurfacing rail of claim 1, it is characterized in that: the percentage by weight prescription of described welding wire medicine core is calcium carbonate CaCO
334%, calcirm-fluoride CaF
213%, barium fluoride BaF
215%, alundum (Al Al
2O
34%, mass percent is 1: 1 almag 12%, iron powder 4%, high carbon ferromanganese 5%, metallic nickel 8%, crome metal 3%, a metal molybdenum 2%.
3. according to the described special self-protection flux-cored wire for resurfacing rail of claim 1, it is characterized in that: the percentage by weight prescription of described welding wire medicine core is calcium carbonate CaCO
336%, calcirm-fluoride CaF
212%, barium fluoride BaF
214%, alundum (Al Al
2O
34%, mass percent is 1: 1 almag 10%, iron powder 3%, high carbon ferromanganese 6%, metallic nickel 9%, crome metal 4%, a metal molybdenum 2%.
4. according to the described special self-protection flux-cored wire for resurfacing rail of claim 1, it is characterized in that: the percentage by weight prescription of welding wire medicine core is calcium carbonate CaCO
332%, calcirm-fluoride CaF
214%, barium fluoride BaF
216%, alundum (Al Al
2O
34%, mass percent is 1: 1 almag 12%, iron powder 3%, high carbon ferromanganese 5%, metallic nickel 9%, crome metal 3%, a metal molybdenum 2%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010262259 CN101913032A (en) | 2010-08-25 | 2010-08-25 | Special self-protection flux-cored wire for resurfacing rail |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010262259 CN101913032A (en) | 2010-08-25 | 2010-08-25 | Special self-protection flux-cored wire for resurfacing rail |
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| CN101913032A true CN101913032A (en) | 2010-12-15 |
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| CN 201010262259 Pending CN101913032A (en) | 2010-08-25 | 2010-08-25 | Special self-protection flux-cored wire for resurfacing rail |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104999195A (en) * | 2015-07-21 | 2015-10-28 | 洛阳双瑞特种合金材料有限公司 | High-toughness and self-protection flux-cored wire for steel structure welding |
| CN105149814A (en) * | 2015-10-16 | 2015-12-16 | 天津市永昌焊丝有限公司 | Self-protection flux-cored wire for steel rail repair welding |
| CN105945451A (en) * | 2016-04-22 | 2016-09-21 | 郑州机械研究所 | High-strength high-toughness self-protection alkaline flux-cored wire applicable to all-position welding |
| CN106925918A (en) * | 2017-04-28 | 2017-07-07 | 天津市永昌焊丝有限公司 | A kind of new self-protection flux-cored wire for X80 pipe line steels |
| CN112222682A (en) * | 2020-09-07 | 2021-01-15 | 南京工程学院 | High-fluorine-alkali type powder, preparation method and self-shielded flux-cored wire |
| CN112894198A (en) * | 2021-01-20 | 2021-06-04 | 浙江鸿途焊接科技有限公司 | Self-protection flux-cored wire for ultralow-temperature high-manganese steel |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1223922A (en) * | 1999-01-12 | 1999-07-28 | 冶金工业部钢铁研究总院 | Gas shield cored electrode for high ductility all position welding |
| CN101062537A (en) * | 2006-04-26 | 2007-10-31 | 天津市金桥焊材集团有限公司 | Self-protective full-position high ductility flux-cored wire |
| CN101073863A (en) * | 2007-06-22 | 2007-11-21 | 安泰科技股份有限公司 | Self-protective and high-toughness flux-cord welding wire |
| CN101234461A (en) * | 2007-01-31 | 2008-08-06 | 天津市金桥焊材集团有限公司 | Self-protecting full position high ductility flux-cored wire for X80 level pipeline pipeline steel welding |
-
2010
- 2010-08-25 CN CN 201010262259 patent/CN101913032A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1223922A (en) * | 1999-01-12 | 1999-07-28 | 冶金工业部钢铁研究总院 | Gas shield cored electrode for high ductility all position welding |
| CN101062537A (en) * | 2006-04-26 | 2007-10-31 | 天津市金桥焊材集团有限公司 | Self-protective full-position high ductility flux-cored wire |
| CN101234461A (en) * | 2007-01-31 | 2008-08-06 | 天津市金桥焊材集团有限公司 | Self-protecting full position high ductility flux-cored wire for X80 level pipeline pipeline steel welding |
| CN101073863A (en) * | 2007-06-22 | 2007-11-21 | 安泰科技股份有限公司 | Self-protective and high-toughness flux-cord welding wire |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104999195A (en) * | 2015-07-21 | 2015-10-28 | 洛阳双瑞特种合金材料有限公司 | High-toughness and self-protection flux-cored wire for steel structure welding |
| CN105149814A (en) * | 2015-10-16 | 2015-12-16 | 天津市永昌焊丝有限公司 | Self-protection flux-cored wire for steel rail repair welding |
| CN105945451A (en) * | 2016-04-22 | 2016-09-21 | 郑州机械研究所 | High-strength high-toughness self-protection alkaline flux-cored wire applicable to all-position welding |
| CN105945451B (en) * | 2016-04-22 | 2018-05-08 | 郑州机械研究所有限公司 | One kind can be used for all position welding high-strength and high ductility self-shield alkaline flux-cored wire |
| CN106925918A (en) * | 2017-04-28 | 2017-07-07 | 天津市永昌焊丝有限公司 | A kind of new self-protection flux-cored wire for X80 pipe line steels |
| CN112222682A (en) * | 2020-09-07 | 2021-01-15 | 南京工程学院 | High-fluorine-alkali type powder, preparation method and self-shielded flux-cored wire |
| CN112222682B (en) * | 2020-09-07 | 2022-03-29 | 南京工程学院 | High-fluorine-alkali type powder, preparation method and self-shielded flux-cored wire |
| CN112894198A (en) * | 2021-01-20 | 2021-06-04 | 浙江鸿途焊接科技有限公司 | Self-protection flux-cored wire for ultralow-temperature high-manganese steel |
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Application publication date: 20101215 |