CN102909488B - Niobium-bearing stainless steel flux-cored wire high in slag detachability - Google Patents
Niobium-bearing stainless steel flux-cored wire high in slag detachability Download PDFInfo
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- CN102909488B CN102909488B CN201210420735.0A CN201210420735A CN102909488B CN 102909488 B CN102909488 B CN 102909488B CN 201210420735 A CN201210420735 A CN 201210420735A CN 102909488 B CN102909488 B CN 102909488B
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Abstract
The invention relates to a flux-cored wire, in particular to a niobium-bearing stainless steel flux-cored wire high in slag detachability. The flux-cored wire comprises a flux core. The flux core comprises 0.5-2.5% of fluorite, 3.0-7.0% of wollastonite, 2.0-5.0% of aluminum powder, 1.0-3.0% of ferrosilicon 75, 2.0-4.0% of potassium sodium titanate, 28.0-32.0% of rutile, 3.0-6.0% of potassium fluosilicate, 1.0-3.0% of cryolite, 2.0-5.0% of potassium feldspar, 1.0-3.0% of magnesium powder, 21.0-25.0% of chromium powder, 6.0-10.0% of nickel powder, 5.0-9.0% of ferroniobium, 2.0-5.0% of electrolytic manganese powder, and 8.0-13.0% of reduced iron powder. The niobium-bearing stainless steel flux-cored wire is high in slag detachability, has the advantages of easiness in slag detaching, stable arc, low spattering and attractive formed welds and has excellent weldability, and weld metal has fine corrosion resistance and toughness effect.
Description
Technical field
The present invention relates to a kind of flux-cored wire, be specifically related to a kind of Nb-containing stainless flux-cored wire of easily de-slag.
Background technology
Stainless flux-cored wire is by the coated medicine core of stainless steel belt through rolling, and draw becomes product.Serious, the explosive slag of Nb-containing stainless flux-cored wire dry slag of the prior art, scarfing cinder difficulty, the easy slag inclusion of weld seam, causes the reduction of production efficiency.
Summary of the invention
The object of the present invention is to provide a kind of easily Nb-containing stainless flux-cored wire of de-slag, have de-slag easily, arc stability, the feature little, appearance of weld is attractive in appearance of splashing, weld metal has good corrosion resistance and excellent plasticity and toughness.
Easily de-slag Nb-containing stainless flux-cored wire of the present invention, comprise medicine core, by percentage to the quality, medicine core composition is: fluorite 0.5-2.5%, wollastonite 3.0-7.0%, aluminium powder 2.0-5.0%, 75# ferrosilicon 1.0-3.0%, potassium titanate sodium 2.0-4.0%, rutile 28.0-32.0%, potassium fluosilicate 3.0-6.0%, ice crystal 1.0-3.0%, potassic feldspar 2.0-5.0%, magnesium powder 1.0-3.0%, hafnium metal powfer 21.0-25.0%, metal nickel powder 6.0-10.0%, ferro-niobium 5.0-9.0%, electrolytic manganese powder 2.0-5.0% and reduced iron powder 8.0-13.0%.
Described medicine core accounts for the 19.0-21.0% of flux-cored wire gross mass.
The each component granularity of described medicine core is 60 order all-pass mistakes, and granularity is less than 80 objects and is not more than 5wt.%, is greater than 180 objects and is not more than 15wt.%.
Flux-cored wire of the present invention steel band used is austenitic stainless steel strip 304L, phosphorus content <0.02wt.%.
In medicine core, each component composition requires as follows, and in each component, content of material is all by percentage to the quality:
(1) fluorite: CaF
2content >96%;
(2) wollastonite: CaO content >47%, SiO
2content >50%;
(3) aluminium powder: AL content >99%;
(4) 75# ferrosilicon: Si content 73-77%, C content <0.3%;
(5) potassium titanate sodium: K
2o content 5-10%, K
2o+Na
2o:18-22%, Ti
2o content 73-77%; Potassium titanate sodium is the mixture of potassium titanate and sodium titanate;
(6) rutile: TiO
2content >95%;
(7) potassium fluosilicate: K
2siF
6content >95%;
(8) ice crystal: Na
3alF
6content >97%;
(9) potassic feldspar: K
2o+Na
2o content >14%, SiO
2content 64-69%, AL
2o
3content 16-19%;
(10) magnesium powder: Mg content >99.5%;
(11) hafnium metal powfer: Cr content >99%, C content <0.05%;
(12) metal nickel powder: Ni content >99%;
(13) ferro-niobium: Nb content >60%, C content <0.15%;
(14) electrolytic manganese powder: Mn content >99%, C content <0.1%;
(15) reduced iron powder: Fe content is that >98%, C content are <0.04%.
When welding, protective gas used is carbon dioxide, and its purity is CO
2content >99.5wt.%, H
2o content <0.3wt.%.
Compared with prior art, beneficial effect of the present invention is as follows:
Easily de-slag Nb-containing stainless flux-cored wire provided by the invention, deslag performance is good, not only have de-slag easily, arc stability, the feature little, appearance of weld is attractive in appearance of splashing, and there is fabulous welding procedure, weld metal has good corrosion resistance and excellent plasticity and toughness.
Detailed description of the invention
Below in conjunction with embodiment, the invention will be further described.
Embodiment 1
Easily de-slag Nb-containing stainless flux-cored wire of the present invention, by percentage to the quality, medicine core composition is: fluorite 2.0%, wollastonite 3.7%, aluminium powder 2.1%, 75# ferrosilicon 1.2%, potassium titanate sodium 2.1%, rutile 28.1%, potassium fluosilicate 3.0%, ice crystal 1.2%, potassic feldspar 4.6%, magnesium powder 2.0%, hafnium metal powfer 21.5%, metal nickel powder 8.1%, ferro-niobium 5.8%, electrolytic manganese powder 2.0%, reduced iron powder 12.6%; Medicine core accounts for 19.5% of flux-cored wire gross mass; The each component granularity of medicine core is 60 order all-pass mistakes, and it is 5wt.% that granularity is less than 80 objects, and being greater than 180 objects is 10wt.%.
Embodiment 2
Easily de-slag Nb-containing stainless flux-cored wire of the present invention, by percentage to the quality, medicine core composition is: fluorite 0.6%, wollastonite 5.8%, aluminium powder 3.6%, 75# ferrosilicon 1.8%, potassium titanate sodium 3.0%, rutile 29.0%, potassium fluosilicate 3.9%, ice crystal 1.5%, potassic feldspar 2.0%, magnesium powder 1.0%, hafnium metal powfer 23.0%, metal nickel powder 7.0%, ferro-niobium 5.0%, electrolytic manganese powder 3.0%, reduced iron powder 9.8%; Medicine core accounts for 20.2% of flux-cored wire gross mass; The each component granularity of medicine core is 60 order all-pass mistakes, and it is 4wt.% that granularity is less than 80 objects, and being greater than 180 objects is 12wt.%.
Embodiment 3
Easily de-slag Nb-containing stainless flux-cored wire of the present invention, by percentage to the quality, medicine core composition is: fluorite 2.5%, wollastonite 3.0%, aluminium powder 4.6%, 75# ferrosilicon 2.6%, potassium titanate sodium 2.2%, rutile 28.7%, potassium fluosilicate 3.0%, ice crystal 3.0%, potassic feldspar 3.0%, magnesium powder 1.1%, hafnium metal powfer 21.0%, metal nickel powder 6.0%, ferro-niobium 8.0%, electrolytic manganese powder 2.5%, reduced iron powder 8.8%; Medicine core accounts for 20.6% of flux-cored wire gross mass; The each component granularity of medicine core is 60 order all-pass mistakes, and it is 4.5wt.% that granularity is less than 80 objects, and being greater than 180 objects is 11wt.%.
In embodiment 1-3, material used is commercially available prod, each content of material all by percentage to the quality:
(1) fluorite: CaF
2content 96.0%; Qian Xinlong mining industry Co., Ltd of Fenyi County product.
(2) wollastonite: CaO content 47.2%, SiO
2content 51.8%; Xinyu South Wollastoniteco., Ltd.'s product.
(3) aluminium powder: AL content 99.3%; Shanghai Jiuding Powder Materials Co., Ltd's product.
(4) 75# ferrosilicon: Si content is 76.2%, C content is 0.26%; Jinzhou Yun Hai metal dust processing Co., Ltd product.
(5) potassium titanate sodium: K
2o content 8.0%, K
2o+Na
2o:18.6%, Ti
2o content 73.6%; Potassium titanate sodium is the mixture of potassium titanate and sodium titanate; Nantong Ao Xin Electronic Science and Technology Co., Ltd. product.
(6) rutile: TiO
2content 95.6%; Wanning Jin Cheng mining industry Co., Ltd product.
(7) potassium fluosilicate: K
2siF
6content 98.5%, Yunnan Fu Lv Trade Co., Ltd. product.
(8) ice crystal: Na
3alF
6content 98.2%, Zibo Korea S chemical plant product.
(9) potassic feldspar: K
2o+Na
2o content 14.2%, SiO
2content 68.0%, AL
2o
3content 17.2%; Mineral powder factory of Linxiang City three strongest ones product.
(10) magnesium powder: Mg content 99.8%; Nanyang Jin Geli magnesium industry product.
(11) hafnium metal powfer: Cr content 99.2%, C content 0.005%; Jinzhou Yun Hai metal dust processing Co., Ltd product.
(12) metal nickel powder: Ni content 99.8%; Jinzhou Yun Hai metal dust processing Co., Ltd product.
(13) ferro-niobium: trade mark FeNb60-A, Nb content 65.0%, C content 0.04%; New resources material Science and Technology Ltd. of Jiangsu Province product.
(14) electrolytic manganese powder: Mn content 99.8%, C content 0.02%; Jinzhou Yun Hai metal dust processing Co., Ltd product.
(15) reduced iron powder: Fe content is 98.3%, C content is 0.02%; Powder metallurgy company of Wuhan Iron and Steel Plant group product.
Claims (3)
1. an easily de-slag Nb-containing stainless flux-cored wire, comprise medicine core, it is characterized in that: by percentage to the quality, medicine core composition is: fluorite 0.6-2.5%, wollastonite 3.0-5.8%, aluminium powder 2.1-4.6%, 75# ferrosilicon 1.2-2.6%, potassium titanate sodium 2.1-3.0%, rutile 28.1-29.0%, potassium fluosilicate 3.0-3.9%, ice crystal 1.2-3.0%, potassic feldspar 2.0-4.6%, magnesium powder 1.0-2.0%, hafnium metal powfer 21.0-23.0%, metal nickel powder 6.0-8.1%, ferro-niobium 5.0-8.0%, electrolytic manganese powder 2.0-3.0% and reduced iron powder 8.8-12.6%; Wherein, ferro-niobium is Nb content >60%, C content <0.15%.
2. easily de-slag Nb-containing stainless flux-cored wire according to claim 1, is characterized in that: described medicine core accounts for the 19.0-21.0% of flux-cored wire gross mass.
3. easily de-slag Nb-containing stainless flux-cored wire according to claim 1 and 2, is characterized in that: the each component granularity of described medicine core is 60 order all-pass mistakes, and granularity is less than 80 objects and is not more than 5wt.%, is greater than 180 objects and is not more than 15wt.%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210420735.0A CN102909488B (en) | 2012-10-29 | 2012-10-29 | Niobium-bearing stainless steel flux-cored wire high in slag detachability |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210420735.0A CN102909488B (en) | 2012-10-29 | 2012-10-29 | Niobium-bearing stainless steel flux-cored wire high in slag detachability |
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|---|---|
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| CN102909488B true CN102909488B (en) | 2014-11-05 |
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|---|---|---|---|---|
| CN103480981B (en) * | 2013-09-22 | 2016-04-06 | 北京工业大学 | A kind of 347 stainless flux-cored wires of low Cr VI discharge |
| CN105269177B (en) * | 2015-11-24 | 2017-08-29 | 天津市金桥焊材集团有限公司 | A kind of stainless flux-cored wire of face of weld non-oxidation color |
| 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 |
| CN106903456A (en) * | 2017-03-07 | 2017-06-30 | 安徽升鸿电子有限公司 | A kind of potassium titanate sodium preparation method with height flowing moisture resistance |
| CN107931887B (en) * | 2017-11-16 | 2020-03-10 | 天津大桥焊材集团有限公司 | Special stainless steel gas shielded welding flux-cored wire for end socket and preparation method thereof |
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| GB871141A (en) * | 1956-05-29 | 1961-06-21 | British Oxygen Co Ltd | Method for electric arc welding |
| CN100389000C (en) * | 2005-12-02 | 2008-05-21 | 北京工业大学 | Nb-containing stainless flux-cored wire with favorite detachability |
| JP2010110817A (en) * | 2008-10-11 | 2010-05-20 | Kobe Steel Ltd | Low-hydrogen coated electrode |
| CN101690996B (en) * | 2009-10-16 | 2011-07-20 | 河北翼辰实业集团有限公司 | All-position niobium -contained stainless steel flux-cored wire |
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