CN101279409A - Self-protecting flux-cored wire containing polyvinylidene resin - Google Patents
Self-protecting flux-cored wire containing polyvinylidene resin Download PDFInfo
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- CN101279409A CN101279409A CNA2007100570734A CN200710057073A CN101279409A CN 101279409 A CN101279409 A CN 101279409A CN A2007100570734 A CNA2007100570734 A CN A2007100570734A CN 200710057073 A CN200710057073 A CN 200710057073A CN 101279409 A CN101279409 A CN 101279409A
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Abstract
The invention relates to a self-shielded flux-cored wire containing polyvinylidene fluoride resin, which comprises a shuck manufactured by adopting the home-made SPCC common mild-carbon steel strip. The invention is characterized in that flux core of the common mild-carbon steel strip consists of villaumite, carbonate, oxide, Manganese (Mn), Silicon (Si), Aluminum (Al), Magnesium (Mg), Nickel (Ni) and ferrous powder jointly; wherein, the components of the flux core include 20 percent to 45 percent of the villaumite, 4 percent to 13 percent of the carbonate, 4 percent to 15 percent of the oxide, 1 percent to 5 percent of Mn, 1 percent to 3 percent of Si, 3 percent to 8 percent of Al, 3 percent to 7 percent of Mg, 0 percent to 5 percent of Ni and ferrous powder serving as the rest. The invention has the advantages that the defects that the pore sensitivity of the self-shielded flux-cored wire is high and the impact toughness of the deposited metal is not excellent; when the multi-layer welding is carried out, the surface blowhole is not generated, the complete slag coverage is achieved, the slag can be easily detached, the weld can be formed well and the impact toughness of the deposited metal is high and stable; the concentration of the hazardous substances in the welding fume is lowered and the invention is beneficial to the health of the welder.
Description
(1) technical field:
The present invention relates to a kind of self-protection flux-cored wire, particularly a kind of self-protection flux-cored wire that contains polyvinylidene fluoride resin.
(2) background technology:
Self-protection flux-cored wire can make airborne oxygen and nitrogen invade the weld zone because electric arc is directly exposed in the air and welds, and causes bad reactions such as stomata sensitivity height and deposited metal toughness deficiency in the Welding Metallurgy process.For obtaining good welding procedure and mechanical property, usually in the medicine core, add a certain amount of deoxidier and denitrifier (as aluminium, magnesium, manganese, titanium etc.), they can form stable oxide and nitride with oxygen and nitrogen, these material additions are very few does not have a due effect, addition too much will cause the column crystallization chap of weld seam, pro-eutectoid ferrite increases, acicular ferrite reduces, generate simultaneously can produce metallic matrix in a large number and isolate the aluminium nitride non-metallic inclusions such as (AlN) of effect, impact flexibility is descended significantly; Another kind method is the proportion that increases gas-forming agent (as multiple fluoride, carbonate, magnesium etc.), reduce the dividing potential drop of welding region oxygen and nitrogen, it is often higher to do content of fluoride like this, because its proportion is less, can cause rolling difficulty of welding wire and performance inhomogeneous, increased the harmful substance in the weld fumes simultaneously, unfavorable to welder's health.Therefore, develop a kind of novel self-protection flux-cored wire and be necessary, very factory is wealthy for market prospects.
(3) summary of the invention:
The object of the present invention is to provide a kind of self-protection flux-cored wire that contains polyvinylidene fluoride resin, it can improve processing performance and the mechanical property of low-alloy steel with self-protection flux-cored wire under the prerequisite that reduces weld fumes and toxicity thereof.
Technical scheme of the present invention: a kind of self-protection flux-cored wire that contains polyvinylidene fluoride resin, it comprises adopts homemade SPCC common low carbon steel band to make crust, the medicine core that it is characterized in that it is by villiaumite, carbonate, oxide, manganese (Mn), silicon (Si), aluminium (Al), and magnesium (Mg), nickel (Ni) and iron powder are formed jointly; Its first drug core component is by weight percentage: villiaumite: 20～45%, and carbonate: 4～13%, oxide: 4～15%, Mn:1～5%, Si:1～3%, Al:3～8%, Mg:3～7%, Ni:0～5%, all the other are iron powder.
In the constituent of above-mentioned said a kind of self-protection flux-cored wire that contains polyvinylidene fluoride resin, the composition of said villiaumite is by weight percentage: polyvinylidene fluoride resin: 3～7%, and calcirm-fluoride (CaF
2): 65～85%, prodan (Na
2SiF
6): 3～6%.
Can also add lithium fluoride (LiF) in the above-mentioned said villiaumite: 3～6%, sodium fluoride (NaF): 3～6%, barium fluoride (BaF
2): 5～8%, potassium fluorozirconate (K
2ZrF
6): one or more combinations in 3～6%.
In the constituent of above-mentioned said a kind of self-protection flux-cored wire that contains polyvinylidene fluoride resin, said carbonate is one or both combinations in lithium carbonate and marble or the magnesia.
In the constituent of above-mentioned said a kind of self-protection flux-cored wire that contains polyvinylidene fluoride resin, said oxide is one or both combinations in iron sand and magnesia or the rutile.
In the constituent of above-mentioned said a kind of self-protection flux-cored wire that contains polyvinylidene fluoride resin, said manganese (Mn) is electrolytic manganese metal or the low-carbon ferromanganese that contains manganese 85～92%.
In the constituent of above-mentioned said a kind of self-protection flux-cored wire that contains polyvinylidene fluoride resin, said silicon (Si) is a kind of in the 75# ferrosilicon of siliceous 45% 45# ferrosilicon, siliceous 65% 65# ferrosilicon and siliceous 75%.
In the constituent of above-mentioned said a kind of self-protection flux-cored wire that contains polyvinylidene fluoride resin, said aluminium (Al) is aluminium powder or the almag that contains aluminium 45～55%.
In the constituent of above-mentioned said a kind of self-protection flux-cored wire that contains polyvinylidene fluoride resin, said magnesium (Mg) is magnesium powder or the almag that contains magnesium 45～55%.
Above-mentioned said a kind of filling rate that contains the self-protection flux-cored wire of polyvinylidene fluoride resin is 15～25%, can be made into the flux-cored wire of diameter phi 2.0mm.
Welding condition is: weldingvoltage 19V; 85 inches/min of wire feed rate; Stem elongation degree 30～35mm; Test plate (panel) material 16Mn.
The deposited metal mechanical property is: tensile strength sigma
b: 510～600MPa, yield strength σ
s〉=420MPa, percentage elongation δ 〉=22%, v-notch ballistic work A
Kv(30 ℃) 〉=27J.
Select the purpose of polyvinylidene fluoride resin for use: be the whole adding proportion that reduces villiaumite on the one hand, reduce content of harmful in the weld fumes, because the fusing point of polyvinylidene fluoride resin has only 164～182 ℃, the easier gasification of Zu He villiaumite like this, thereby effectively prevent nitrogen pore, also more help simultaneously reducing the fusing point of slag and improving wetability, make its protection effect and appearance of weld better; On the other hand,, just can reduce the addition of Al, thereby make deposited metal impact flexibility height and stablize because the slag gas Combined Protection of this villiaumite is effective.
Superiority of the present invention is: (1) adopts slag gas Combined Protection, has taken into account the advantage of stabilising arc and deoxidation, denitrifier; (2) solve the high and deposited metal impact flexibility defect of insufficient of self-protection flux-cored wire stomata sensitivity, improved welding technological properties, during multilayer welding, no subcutaneous blowhole, slag covers complete, and it is easy to take off slag, appearance of weld is good, and deposited metal impact flexibility is high and stablize; (3) simultaneously because the whole adding proportion of fluoride reduces, reduced harmful substance contents in the weld fumes, to welder's healthy and beneficial.
(4) specific embodiment:
Embodiment 1: a kind of self-protection flux-cored wire that contains polyvinylidene fluoride resin; it adopts SPCC common low carbon steel band (to contain 0.038%C in the chemical composition; 0.012%Si; 0.23%Mn; 0.008%S, 0.013%P), slag gas Combined Protection; it is characterized in that the medicine core is made up of following material: polyvinylidene fluoride resin: 2%, CaF
224%, LiF:2%, Na
2SiF
6: 2%, lithium carbonate: 6%, marble: 2%, magnesia: 2%, iron sand: 6%, magnesia: 3%, the electrolytic metal manganese powder: 2%, the 75# ferrosilicon: 2%, Al:7%, Mg:5%, Ni:4%, iron powder: 31%; The filling rate of the flux-cored wire that makes is 15～25%, gage of wire φ 2.0mm.
Technique effect: during this welding wire welding, arc stability, it is easy to take off slag, and moulding is attractive in appearance, deposited metal tensile strength sigma b:540MPa, yield strength σ s:430MPa, percentage elongation δ 〉=26%, v-notch ballistic work A
Kv(30 ℃) 〉=57J.
Embodiment 2:
A kind of self-protection flux-cored wire that contains polyvinylidene fluoride resin; it adopts SPCC common low carbon steel band (to contain 0.038%C in the chemical composition; 0.012%Si; 0.23%Mn; 0.008%S, 0.013%P), slag gas Combined Protection; it is characterized in that the medicine core is made up of following material: polyvinylidene fluoride resin: 3%, CaF
2: 20%, LiF:2%, K
2ZrF
6: 2%, lithium carbonate: 8%, marble: 3%, iron sand: 8%, magnesia: 3%, the electrolytic metal manganese powder: 2%, the 75# ferrosilicon: 2%, almag (containing Al55%): 12%, Ni:4%, iron powder: 31%, the filling rate of the flux-cored wire that makes is 15～25%, gage of wire φ 2.0mm.
Technique effect: during this welding wire welding, arc stability, it is easy to take off slag, and moulding is attractive in appearance, deposited metal tensile strength sigma b:550MPa, yield strength σ s:445MPa, percentage elongation δ 〉=26%, v-notch ballistic work A
Kv(30 ℃) 〉=57J.
Claims (10)
1. self-protection flux-cored wire that contains polyvinylidene fluoride resin, it comprises adopts homemade SPCC common low carbon steel band to make crust, the medicine core that it is characterized in that it is by villiaumite, carbonate, oxide, manganese (Mn), silicon (Si), aluminium (Al), and magnesium (Mg), nickel (Ni) and iron powder are formed jointly; Wherein drug core component is by weight percentage: villiaumite: 20～45%, and carbonate: 4～13%, oxide: 4～15%, Mn:1～5%, Si:1～3%, Al:3～8%, Mg:3～7%, Ni:0～5%, all the other are iron powder.
2. according to right 1 said a kind of self-protection flux-cored wire that contains polyvinylidene fluoride resin, it is characterized in that the composition of said villiaumite is by weight percentage: polyvinylidene fluoride resin: 3～7%, calcirm-fluoride (CaF
2): 65～85%, prodan (Na
2SiF
6): 3～6%.
3. according to right 1 said a kind of self-protection flux-cored wire that contains polyvinylidene fluoride resin, it is characterized in that can also adding in the said villiaumite lithium fluoride (LiF): 3～6%, sodium fluoride (NaF): 3～6%, barium fluoride (BaF
2): 5～8%, potassium fluorozirconate (K
2ZrF
6): one or more combinations in 3～6%.
4. according to right 1 said a kind of self-protection flux-cored wire that contains polyvinylidene fluoride resin, it is characterized in that said carbonate is one or both combinations in lithium carbonate and marble or the magnesia.
5. according to right 1 said a kind of self-protection flux-cored wire that contains polyvinylidene fluoride resin, it is characterized in that said oxide is one or both combinations in iron sand and magnesia or the rutile.
6. according to right 1 said a kind of self-protection flux-cored wire that contains polyvinylidene fluoride resin, it is characterized in that said manganese (Mn) is electrolytic manganese metal or the low-carbon ferromanganese that contains manganese 85～92%.
7. according to right 1 said a kind of self-protection flux-cored wire that contains polyvinylidene fluoride resin, it is characterized in that said silicon (Si) is a kind of in the 75# ferrosilicon of siliceous 45% 45# ferrosilicon, siliceous 65% 65# ferrosilicon and siliceous 75%.
8. according to right 1 said a kind of self-protection flux-cored wire that contains polyvinylidene fluoride resin, it is characterized in that said aluminium (Al) is aluminium powder or the almag that contains aluminium 45～55%.
9. according to right 1 said a kind of self-protection flux-cored wire that contains polyvinylidene fluoride resin, it is characterized in that said magnesium (Mg) is magnesium powder or the almag that contains magnesium 45～55%.
10. according to right 1 said a kind of self-protection flux-cored wire that contains polyvinylidene fluoride resin, it is characterized in that its filling rate is 15～25%, can be made into the flux-cored wire of diameter phi 2.0mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007100570734A CN101279409B (en) | 2007-04-05 | 2007-04-05 | Self-protecting flux-cored wire containing polyvinylidene resin |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007100570734A CN101279409B (en) | 2007-04-05 | 2007-04-05 | Self-protecting flux-cored wire containing polyvinylidene resin |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101279409A true CN101279409A (en) | 2008-10-08 |
| CN101279409B CN101279409B (en) | 2011-03-23 |
Family
ID=40012180
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2007100570734A Expired - Fee Related CN101279409B (en) | 2007-04-05 | 2007-04-05 | Self-protecting flux-cored wire containing polyvinylidene resin |
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| CN102343488A (en) * | 2010-08-03 | 2012-02-08 | 武汉铁锚焊接材料股份有限公司 | Basic flux-cored wire for bridge steel |
| CN104741824A (en) * | 2015-03-09 | 2015-07-01 | 西安理工大学 | Flux-cored wire for welding D406A steel and manufacturing method thereof |
| CN105798485A (en) * | 2016-05-31 | 2016-07-27 | 西安理工大学 | Self-shielded flux-cored wire for X80 pipeline steel and preparation method of self-shielded flux-cored wire |
| CN107262965A (en) * | 2017-05-17 | 2017-10-20 | 安徽飞弧焊业股份有限公司 | A kind of flux-cored wire of good toughness |
| CN107297583A (en) * | 2017-05-17 | 2017-10-27 | 安徽飞弧焊业股份有限公司 | A kind of flux-cored wire of low-porosity good toughness |
| CN107414340A (en) * | 2017-05-11 | 2017-12-01 | 安徽飞弧焊业股份有限公司 | A kind of bridge flux-cored wire |
| CN109530959A (en) * | 2018-11-21 | 2019-03-29 | 武汉铁锚焊接材料股份有限公司 | A kind of small dimension self-protection flux-cored wire and its application suitable for downhand welding and horizontal position welding |
| CN110340567A (en) * | 2018-04-03 | 2019-10-18 | 青岛润乾高新科技有限公司 | A kind of low hydrogen flux-cored wire and preparation method thereof suitable for high-strength steel |
| CN111151923A (en) * | 2020-01-03 | 2020-05-15 | 长春理工大学 | Welding auxiliary reagent and application thereof, and welding method of silicon carbide particle reinforced aluminum matrix composite |
| CN111805121A (en) * | 2020-08-26 | 2020-10-23 | 武汉科技大学 | Flux core for X70 pipeline steel, self-protection flux-cored wire and preparation method thereof |
| CN112935625A (en) * | 2021-02-05 | 2021-06-11 | 天津市金桥焊材集团股份有限公司 | High-toughness alkaline all-position flux-cored wire capable of adapting to plateau climate |
| CN112975193A (en) * | 2021-02-09 | 2021-06-18 | 天津市金桥焊材集团股份有限公司 | High-toughness alkaline flux-cored wire slag system with excellent all-position weldability and flux-cored wire |
| CN115008066A (en) * | 2022-07-06 | 2022-09-06 | 武汉铁锚焊接材料股份有限公司 | Self-protection flux-cored wire for weathering resistant steel |
| CN115008066B (en) * | 2022-07-06 | 2024-05-28 | 武汉铁锚焊接材料股份有限公司 | Self-protection flux-cored wire for weathering steel |
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| US20060144836A1 (en) * | 2005-01-03 | 2006-07-06 | Lincoln Global, Inc. | Cored electrode for reducing diffusible hydrogen |
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| CN102343488A (en) * | 2010-08-03 | 2012-02-08 | 武汉铁锚焊接材料股份有限公司 | Basic flux-cored wire for bridge steel |
| CN102343488B (en) * | 2010-08-03 | 2013-01-30 | 武汉铁锚焊接材料股份有限公司 | Basic flux-cored wire for bridge steel |
| CN104741824A (en) * | 2015-03-09 | 2015-07-01 | 西安理工大学 | Flux-cored wire for welding D406A steel and manufacturing method thereof |
| CN105798485A (en) * | 2016-05-31 | 2016-07-27 | 西安理工大学 | Self-shielded flux-cored wire for X80 pipeline steel and preparation method of self-shielded flux-cored wire |
| CN107414340A (en) * | 2017-05-11 | 2017-12-01 | 安徽飞弧焊业股份有限公司 | A kind of bridge flux-cored wire |
| CN107262965A (en) * | 2017-05-17 | 2017-10-20 | 安徽飞弧焊业股份有限公司 | A kind of flux-cored wire of good toughness |
| CN107297583A (en) * | 2017-05-17 | 2017-10-27 | 安徽飞弧焊业股份有限公司 | A kind of flux-cored wire of low-porosity good toughness |
| CN110340567A (en) * | 2018-04-03 | 2019-10-18 | 青岛润乾高新科技有限公司 | A kind of low hydrogen flux-cored wire and preparation method thereof suitable for high-strength steel |
| CN110340567B (en) * | 2018-04-03 | 2021-04-02 | 青岛润乾高新科技有限公司 | Low-hydrogen flux-cored welding wire suitable for high-strength steel and preparation method thereof |
| CN109530959A (en) * | 2018-11-21 | 2019-03-29 | 武汉铁锚焊接材料股份有限公司 | A kind of small dimension self-protection flux-cored wire and its application suitable for downhand welding and horizontal position welding |
| CN109530959B (en) * | 2018-11-21 | 2021-03-26 | 武汉铁锚焊接材料股份有限公司 | Small-specification self-shielded flux-cored wire suitable for flat welding and transverse welding and application thereof |
| CN111151923A (en) * | 2020-01-03 | 2020-05-15 | 长春理工大学 | Welding auxiliary reagent and application thereof, and welding method of silicon carbide particle reinforced aluminum matrix composite |
| CN111805121A (en) * | 2020-08-26 | 2020-10-23 | 武汉科技大学 | Flux core for X70 pipeline steel, self-protection flux-cored wire and preparation method thereof |
| CN112935625A (en) * | 2021-02-05 | 2021-06-11 | 天津市金桥焊材集团股份有限公司 | High-toughness alkaline all-position flux-cored wire capable of adapting to plateau climate |
| CN112935625B (en) * | 2021-02-05 | 2023-02-21 | 天津市金桥焊材集团股份有限公司 | High-toughness alkaline all-position flux-cored wire capable of adapting to plateau climate |
| CN112975193A (en) * | 2021-02-09 | 2021-06-18 | 天津市金桥焊材集团股份有限公司 | High-toughness alkaline flux-cored wire slag system with excellent all-position weldability and flux-cored wire |
| CN115008066A (en) * | 2022-07-06 | 2022-09-06 | 武汉铁锚焊接材料股份有限公司 | Self-protection flux-cored wire for weathering resistant steel |
| CN115008066B (en) * | 2022-07-06 | 2024-05-28 | 武汉铁锚焊接材料股份有限公司 | Self-protection flux-cored wire for weathering steel |
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