CN102689106A - Vertical electro-gas welding metal-cored flux-cored welding wire for petroleum storage tank - Google Patents
Vertical electro-gas welding metal-cored flux-cored welding wire for petroleum storage tank Download PDFInfo
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- CN102689106A CN102689106A CN2012101933261A CN201210193326A CN102689106A CN 102689106 A CN102689106 A CN 102689106A CN 2012101933261 A CN2012101933261 A CN 2012101933261A CN 201210193326 A CN201210193326 A CN 201210193326A CN 102689106 A CN102689106 A CN 102689106A
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Abstract
The invention provides a vertical electro-gas welding metal-cored flux-cored welding wire for a petroleum storage tank, wherein the vertical electro-gas welding metal-cored flux-cored welding wire for the petroleum storage tank consists of flux powder and an external stainless steel tape, and is characterized in that a flux core occupies 24-28% of the total weight of the welding wire, wherein the flux core comprises the following component in percentage by weight (based on the weight of the flux core): 5-10% of electrolytic manganese, 1-6.75% of silicon iron, 0.5-3% of molybdenum powder, 2-8% of ferrotitanium, 2-8% of nickel powder, 2-5% of sodium fluoride, 0.5-2% of lithium fluoride, 1-5% of sodium fluosilicate, 0.1-0.5% of ferroboron, 1-5% of magnesium powder, and 65-80% of ferrous powder. The flux-cored welding wire provided by the invention can be used for welding 610MPa high-intensity large wire energy steel, the welding quality is good, the welding line is molded once, and the efficiency is high.
Description
Technical field
The invention belongs to the welding field in the Materials Processing Engineering; More specifically; Relate to a kind of carbon steel steel band that utilizes and wrap up the flux-cored wire of the deposited metal of multiple alloy powder and the manufacturing of small amounts of mineral powder for 12MnNiVR and B610E and external corresponding steel grade; It is mainly used in the storage tank side plate, also can be used for the butt weld of the cut deal such as box beam web, metallurgy high furnace of shell and various internals, the bridge of vertical position welding boats and ships.
Background technology
In order to guarantee Chinese energy safety, country sets up national strategic oil inventory since the first half of the year in 2003, and plans to realize in 2015 90 days long-term goal of oil reserve.The precondition that realizes this target is to build to be used for 10 of oil storage～150,000 m
3The Large Oil Tank of (or volume is bigger).Medium in the petroleum storage tank belongs to inflammable dangerous material.Therefore, after construction required steel of storage tank and wlding need pass through the authoritative quality testing department authentication of national appointment, can use.
The characteristics of vertical electro-gas are cut deal welding one-shot formings, and weld heat input is very big, and weld metal toughness is difficult to up to standard; For mother metal; The maximum temperature of melt run near zone surpasses 1400 ℃ during the vertical electro-gas welding, and this zone crystal grain becomes very thick, and the coarse grain zone is widened; The HAZ low-temperature impact toughness reduces, and intensity reduces.
At present, the extensive storage tank of building of China is volume 100,000 m
3, its wallboard mainly adopts the large-line energy welded high-strength steel plate of 610MPa.The supporting wlding of 610MPa high strength, high heat input ability dimension is the vertical electro-gas flux-cored wire special, and at present complete dependence on import mainly is the EG-60 of Japanese Nippon Steel and the DWS-60G of refreshing steel.Once had the domestic authoritative unit long period to study, but the result can not meet the demands, bigger with the external product gap, abandon finally.
To above-mentioned situation, developing a kind of 610MPa high strength, high heat input can the supporting wlding vertical electro-gas of dimension flux-cored wire special ZY-EG60.With carbon steel steel band parcel alloy powder and mineral dust, make deposited metal reach the requirement of 610MPa high strength, high heat input ability dimension.
Summary of the invention
The object of the present invention is to provide a kind of petroleum storage tank with the metal-cored flux-cored wire of vertical electro-gas, can be used for welding 610MPa high strength, high heat input ability dimension, welding quality is good, the weld seam one-shot forming, and efficient is high.
To achieve these goals, the present invention adopts following technical scheme:
A kind of petroleum storage tank is with the metal-cored flux-cored wire of vertical electro-gas; Form by medicinal powder and external application stainless steel band; Said medicine core accounts for 24～28% of welding wire gross weight, and the percentage by weight of each ingredients constitute medicine core of its Chinese medicine core is: electrolytic manganese 5～10%, ferrosilicon 1～6.75%, molybdenum powder 0.5～3%, ferrotianium 2～8%, nickel powder 2～8%, sodium fluoride 2～5%, lithium fluoride 0.5～2%, prodan 1～5%, ferro-boron 0.1～0.5%, magnesium powder 1～5%, iron powder 65～80%.
Aforesaid flux-cored wire, preferably, said external application stainless steel band is a H08A carbon steel steel band.
Aforesaid flux-cored wire, preferably, said flux-cored wire and homemade 610MPa level petroleum storage tank high strength, high heat input energy reach matched well with steel 12MnNiVR and B610E and external corresponding steel grade on chemical composition, mechanical property.
Aforesaid flux-cored wire, preferably, the diameter of said flux-cored wire is between 1.5mm～1.6mm.
Aforesaid flux-cored wire, preferably, said flux-cored wire is applicable to that heat input is not more than the welding of 180KJ/cm.
It is main slag system that aforesaid vertical electro-gas flux-cored wire, this welding wire adopt NaF+MgO, and the quantity of slag is in 2% scope.Methods such as the material that welding wire adopts part powder preliminary treatment (the removal crystallization water), few adding of trying one's best contains the crystallization water, adding rare earth reduce diffusible hydrogen content, and its welding technology diffusible hydrogen content is lower than 4mL/100g.The weld metal brittle transition temperature of said welding wire is well below 40 degrees below zero, and the welding wire welding technological properties is good, can adapt to the welding of irregular groove size steel plate.
The preparation method of said flux-cored wire adopts following steps:
1, steel band is rolled into U-shaped, in U-lag, adds the medicinal powder of the present invention that accounts for welding wire gross weight 24～28% of the present invention;
2, U-lag is healed up, make the medicinal powder parcel wherein, by road drawing, tube reducing, it is reached about 1.6mm, obtain final product through wire drawing die.
Beneficial effect of the present invention is:
Flux-cored wire appearance of weld of the present invention is attractive in appearance, and welding technological properties is good, welding cut deal once-forming, and production efficiency is high.This welding wire is mainly used in the storage tank side plate, also can be used for the welding of butt weld of the cut deal such as box beam web, metallurgy high furnace of shell and various internals, the bridge of vertical position welding boats and ships.
The specific embodiment
The invention provides a kind of petroleum storage tank with the metal-cored flux-cored wire of vertical electro-gas, wherein, the effect of the main component in this welding wire medicine core is following:
Fe powder:, improve conductance to the weld seam transition metal.
Ferrosilicon: can adjust fusing point, viscosity, surface tension and the flowability of slag, the molten admittedly invigoration effect of silicon is very strong, thereby can effectively improve the intensity of weld seam, but content surpasses certain limit toughness is descended.Aspect metallurgical, silicon is that good deoxidier also can prevent the CO pore, therefore; Should contain a certain amount of silicon in the weld seam, but it should be noted that deoxidation products forms silicate easily, produce slag inclusion; Low-melting silicate possibly cause solidification cracking; Silicate also can increase the viscosity of slag and deposite metal in addition, causes more serious splashing, and influences welding quality.
Ferrotianium: deoxidation is arranged, and can improve the stability of electric arc, an amount of Ti and B impels weld seam when solidifying, to separate out acicular ferrite simultaneously; Thereby play the effect that improves weld metal toughness; Ti adds with the form of ferrotianium among the present invention, and its amount ranges is 2～8% of a welding wire core wire gross weight, when Ti content less than 2 or greater than 8 the time; Weld metal intensity rises, and toughness reduces.
Electrolytic manganese: mainly, certain alloying effect is arranged also as deoxidier, also favourable simultaneously to desulfurization.Emit a large amount of heats in addition during the manganese oxidation, improve bath temperature, help metallurgical reaction.
Molybdenum powder: can effectively improve the intensity of weld metal and reach the effect that improves toughness through crystal grain thinning, the molybdenum of adding too much can improve heat resistance, and improves the tendency of hardenability of heat affected area, and crack sensitivity is increased.
Nickel powder: Ni can effectively improve toughness.Its amount ranges is 2～8% of a welding wire core wire gross weight.It is not obvious to be less than effect in 2% o'clock, can not effectively mate with Mn, Si greater than 8% o'clock, and ballistic work descends on the contrary, and crack resistance is poor.
Fluoride: can improve the anti-pore ability of welding wire, reduce the content of diffusible hydrogen, guarantee the weld seam low-temperature flexibility to a certain extent.
The flux-cored wire of following each embodiment all is to be rolled out by medicine core wire drawing machine, the steps include:
A. selecting width for use is 12～13.5mm, and thickness is the carbon steel steel band of 0.7～0.9mm;
B. earlier steel band is rolled into U-shaped; In U-lag, adding granularity again is-80 purpose mixed powders (being that medicinal powder particles of powder degree all can pass through 80 mesh sieves), and the filling rate of medicinal powder (being the percentage that medicinal powder weight accounts for the welding wire gross weight, down together) is 24～28%; U-lag is healed up, make the medicinal powder parcel wherein.
Embodiment 1
Select the H08A carbon steel steel band of 12 * 0.9mm (width of expression steel band is 12mm, and thickness is 0.9mm, hereinafter adopts same form of presentation) for use, earlier it is rolled into U-shaped.Get 6% electrolytic manganese, 3% ferrosilicon, 1% molybdenum powder, 5% ferrotianium, 5% nickel powder, sodium fluoride 2.5%, lithium fluoride 0.5%, prodan 2%, 0.1% ferro-boron, 2% magnesium powder, 72.9% iron powder, each particles of powder degree of getting all can pass through 80 mesh sieves.The various powder of get are put into mixed powder machine mixed 45 minutes, then mixed-powder is added in the U-shaped H08A carbon steel steel band groove, filling rate is 24%, and U-lag is healed up, and makes it with the medicinal powder parcel wherein, pursues road drawing, tube reducing to 1.56mm with wire drawing die then.Under the situation of unprotect gas, weld, welding current 350～400A, weldingvoltage 38～46V, speed of welding 1.18mm/sec, the weld seam ballistic work is surveyed in the welding back, and ballistic work numerical value is seen table 1.
Embodiment 2
Select the H08A carbon steel steel band of 13 * 0.9mm for use, earlier it is rolled into U-shaped.Get 7% electrolytic manganese, 3% ferrosilicon, 1.5% molybdenum powder, 4% ferrotianium, 3.5% nickel powder, sodium fluoride 2.5%, lithium fluoride 0.5%, prodan 2%,, 0.1% ferro-boron, 2% magnesium powder, 73.9% iron powder, each particles of powder degree of getting all can pass through 80 mesh sieves.The various powder of get are put into mixed powder machine mixed 45 minutes, then mixed-powder is added in the U-shaped H08A carbon steel steel band groove, filling rate is 25%, and U-lag is healed up, and makes it with the medicinal powder parcel wherein, pursues road drawing, tube reducing to 1.56mm with wire drawing die then.Under the situation of unprotect gas, weld, welding current 350～400A, weldingvoltage 38～46V, speed of welding 1.20mm/sec, the weld seam ballistic work is surveyed in the welding back, and ballistic work numerical value is seen table 1.
Embodiment 3
Select the H08A carbon steel steel band of 13 * 0.8mm for use, earlier it is rolled into U-shaped.Get 6% electrolytic manganese, 4% ferrosilicon, 1% molybdenum powder, 6% ferrotianium, 5% nickel powder, sodium fluoride 2.5%, lithium fluoride 0.5%, prodan 2%,, 0.1% ferro-boron, 2% magnesium powder, 70.9% iron powder, each particles of powder degree of getting all can pass through 80 mesh sieves.The various powder of get are put into mixed powder machine mixed 45 minutes, then mixed-powder is added in the U-shaped H08A carbon steel steel band groove, filling rate is 25%, and U-lag is healed up, and makes it with the medicinal powder parcel wherein, pursues road drawing, tube reducing to 1.56mm with wire drawing die then.Under the situation of unprotect gas, weld, welding current 350～400A, weldingvoltage 38～46V, speed of welding 1.17mm/sec, the weld seam ballistic work is surveyed in the welding back, and ballistic work numerical value is seen table 1.
Embodiment 4
Select the H08A carbon steel steel band of 13 * 0.7mm for use, earlier it is rolled into U-shaped.Get 8% electrolytic manganese, 5% ferrosilicon, 1.5% molybdenum powder, 5% ferrotianium, 6% nickel powder, sodium fluoride 2.5%, lithium fluoride 0.5%, prodan 2%,, 0.1% ferro-boron, 2% magnesium powder, 67.4% iron powder, each particles of powder degree of getting all can pass through 80 mesh sieves.The various powder of get are put into mixed powder machine mixed 45 minutes, then mixed-powder is added in the U-shaped H08A carbon steel steel band groove, filling rate is 26%, and U-lag is healed up, and makes it with the medicinal powder parcel wherein, pursues road drawing, tube reducing to 1.56mm with wire drawing die then.Under the situation of unprotect gas, weld, welding current 350～400A, weldingvoltage 38～46V, speed of welding 1.19mm/sec, the weld seam ballistic work is surveyed in the welding back, and ballistic work numerical value is seen table 1.
Table 1 embodiment effect
Result by table 1 is visible; After the flux-cored wire that adopts embodiment 1～4 to provide welds; Its deposited metal and the equal National standard of weld seam index satisfy the vertical electro-gas welding requirements of large-scale petroleum storing tank, and wherein embodiment 3 and 4 performance are higher than embodiment 1 and 2 significantly.
Claims (5)
1. a petroleum storage tank is with the metal-cored flux-cored wire of vertical electro-gas; Form by medicinal powder and external application stainless steel band; It is characterized in that; Said medicine core accounts for 24～28% of welding wire gross weight, and the percentage by weight of each ingredients constitute medicine core of its Chinese medicine core is: electrolytic manganese 5～10%, ferrosilicon 1～6.75%, molybdenum powder 0.5～3%, ferrotianium 2～8%, nickel powder 2～8%, sodium fluoride 2～5%, lithium fluoride 0.5～2%, prodan 1～5%, ferro-boron 0.1～0.5%, magnesium powder 1～5%, iron powder 65～80%.
2. flux-cored wire as claimed in claim 1 is characterized in that, said external application stainless steel band is a H08A carbon steel steel band.
3. according to claim 1 or claim 2 flux-cored wire is characterized in that said flux-cored wire is applicable to that 610MPa level petroleum storage tank is with steel 12MnNiVR and B610E.
4. according to claim 1 or claim 2 flux-cored wire is characterized in that the diameter of said flux-cored wire is between 1.5mm～1.6mm.
5. according to claim 1 or claim 2 flux-cored wire is characterized in that said flux-cored wire is applicable to that heat input is not more than the welding of 180KJ/cm.
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| CN201210193326.1A CN102689106B (en) | 2012-06-12 | 2012-06-12 | Vertical electro-gas welding metal-cored flux-cored welding wire for petroleum storage tank |
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| CN201210193326.1A CN102689106B (en) | 2012-06-12 | 2012-06-12 | Vertical electro-gas welding metal-cored flux-cored welding wire for petroleum storage tank |
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| CN102689106B CN102689106B (en) | 2014-07-02 |
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Cited By (7)
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|---|---|---|---|---|
| CN104139250A (en) * | 2014-08-04 | 2014-11-12 | 天津市永昌焊丝有限公司 | High-strength high-tenacity electro-gas welding agent core welding wire and preparation method |
| CN104148824A (en) * | 2014-09-01 | 2014-11-19 | 四川大西洋焊接材料股份有限公司 | High-tenacity flux-cored wire for electro-gas welding |
| CN104259688A (en) * | 2014-09-17 | 2015-01-07 | 山东聚力焊接材料有限公司 | Great line energy gas-electric vertical welding flux core wire and production method thereof |
| CN105263662A (en) * | 2013-03-15 | 2016-01-20 | 林肯环球股份有限公司 | Consumable and method and system to utilize consumable in a hot-wire system |
| CN106312367A (en) * | 2016-09-07 | 2017-01-11 | 北京智双科技发展有限公司 | Gas-shielded flux-cored wire for welding x80 pipeline steel |
| CN108788515A (en) * | 2018-04-26 | 2018-11-13 | 洛阳双瑞特种合金材料有限公司 | A kind of welding of LPG ships seamless medicine core powder, welding wire for submerged-arc welding and preparation and application |
| CN112122820A (en) * | 2020-09-29 | 2020-12-25 | 天津市永昌焊丝有限公司 | Acidic high-strength high-toughness flux-cored wire |
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Cited By (11)
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| CN105263662A (en) * | 2013-03-15 | 2016-01-20 | 林肯环球股份有限公司 | Consumable and method and system to utilize consumable in a hot-wire system |
| CN104139250A (en) * | 2014-08-04 | 2014-11-12 | 天津市永昌焊丝有限公司 | High-strength high-tenacity electro-gas welding agent core welding wire and preparation method |
| CN104139250B (en) * | 2014-08-04 | 2016-06-08 | 天津市永昌焊丝有限公司 | A kind of high-intensity high-tenacity electro-gas (enclosed) welding flux-cored wire and preparation method |
| CN104148824A (en) * | 2014-09-01 | 2014-11-19 | 四川大西洋焊接材料股份有限公司 | High-tenacity flux-cored wire for electro-gas welding |
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| CN104259688A (en) * | 2014-09-17 | 2015-01-07 | 山东聚力焊接材料有限公司 | Great line energy gas-electric vertical welding flux core wire and production method thereof |
| CN106312367A (en) * | 2016-09-07 | 2017-01-11 | 北京智双科技发展有限公司 | Gas-shielded flux-cored wire for welding x80 pipeline steel |
| CN108788515A (en) * | 2018-04-26 | 2018-11-13 | 洛阳双瑞特种合金材料有限公司 | A kind of welding of LPG ships seamless medicine core powder, welding wire for submerged-arc welding and preparation and application |
| CN108788515B (en) * | 2018-04-26 | 2020-12-18 | 洛阳双瑞特种合金材料有限公司 | Seamless flux-cored powder for welding LPG ship, submerged arc welding wire, preparation and application |
| CN112122820A (en) * | 2020-09-29 | 2020-12-25 | 天津市永昌焊丝有限公司 | Acidic high-strength high-toughness flux-cored wire |
| CN112122820B (en) * | 2020-09-29 | 2022-03-04 | 天津市永昌焊丝有限公司 | Acidic high-strength high-toughness flux-cored wire |
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Effective date of registration: 20210121 Address after: 100088 Beijing city Haidian District Xitucheng Road No. 33 Patentee after: CHINA JINGYE ENGINEERING Co.,Ltd. Patentee after: CENTRAL RESEARCH INSTITUTE OF BUILDING AND CONSTRUCTION CO., LTD. MCC Group Address before: 101106 No.2, liangliwu street, East District, Tongzhou Economic Development Zone, Tongzhou District, Beijing Patentee before: ZHONGYE WELDING TECHNOLOGY Co.,Ltd. Patentee before: CENTRAL RESEARCH INSTITUTE OF BUILDING AND CONSTRUCTION CO., LTD. MCC Group |
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