CN101585122A - Method for reducing cost of sintered flux - Google Patents
Method for reducing cost of sintered flux Download PDFInfo
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- CN101585122A CN101585122A CNA2009100650850A CN200910065085A CN101585122A CN 101585122 A CN101585122 A CN 101585122A CN A2009100650850 A CNA2009100650850 A CN A2009100650850A CN 200910065085 A CN200910065085 A CN 200910065085A CN 101585122 A CN101585122 A CN 101585122A
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- China
- Prior art keywords
- flux
- sintered
- slag
- skull
- solder flux
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Abstract
The present invention provides a method for reducing the cost of sintered flux. The invention is characterized in that the slag shell of the sintered flux is recovered and grinded to powder. The formula of the welding flux is adjusted appropriately. The processing performance of the flux is in good condition. The mechanical performance can still be guaranteed when the flux is matched with the corresponding welding stick. The method of the invention can greatly reduce the cost of the raw material.
Description
Technical field
The present invention is a kind of method that reduces cost of sintered flux, is applicable to the development of various sintered fluxes.
Background technology
The solder flux that the welding of submerged-arc welding is at present used mainly divides two kinds: a kind of is fysed flux, and a kind of is sintered flux.Compare fysed flux, sintered flux has the following advantages: 1. production process is pollution-free, produces a large amount of fluorine gas, contaminated environment when producing unlike fysed flux; 2. it is little to produce required energy consumption; 3. can in solder flux, add a large amount of alloying constituents and carry out alloying, adjust the composition of weld metal; 4. the deposited metal low-temperature impact toughness is higher than the impact flexibility of fysed flux far away, helps welding the demanding Welding Structure of various impact flexibility, has good welding technological properties; 5. the apparent volume quality is little, and the consumption of solder flux is little in the welding process, has reduced use cost.Because above these advantages, sintered flux has been widely used in industries such as pressure vessel industries, spiral welded pipe, steel cylinder industry, bridge, building trade, shipbuilding industry, petroleum chemical industry, metal structure.But one of advantage of fysed flux is the skull after the welding can be recycled, the new raw material melting in electric furnace again of mixing, and the skull of sintered flux generally all is used as industrial refuse to being thrown away, along with being extensive use of gradually of alloy flux and extraordinary solder flux, the skull that how to reclaim sintered flux becomes Welder author's a novel research topic.
The present invention also reclaims the back as a kind of raw material use as the skull of fysed flux by the skull that experimental design goes out sintered flux.The skull of sintered flux is recycled and is not seen relevant patent report as yet.
Summary of the invention
The present invention be directed to above background, with the skull of sintered flux give reclaim after, grind to form 〉=80 purpose fine powders, add in female flux component as a kind of new component of Ultra Low Cost, adjust prescription a little, guarantee the original composition of solder flux, basicity, reach mechanical property, the solder flux removability of slag is good simultaneously, arc stability, appearance of weld is attractive in appearance.Technical scheme is: 1. the skull of which kind of sintered flux still adds in this solder flux as raw material after reclaiming basically; 2. the skull fine powder after grinding by the detection contrast and the design mix of former solder flux are adjusted some the difference component in the solder flux; The impurity content of the solder flux after 3. strict control is synthetic is as S, P etc.
The effect of some key components is as follows in the flux composition:
SiO
2: be the important function that slag former has stable arc simultaneously.Content more after a little while, the electric arc instability easily produces the phenomenon of current interruption; When content was higher, deposited metal increased Si, and the viscosity of slag is excessive simultaneously, mobile variation.In addition, SiO
2Have the capillary effect of the slag of reduction, have to utilize and improve deslag performance and appearance of weld effect.General by flint clay, wollastonite adding.
MnO: adjust the Mn amount that contains in the deposited metal, reduce the fusing point of slag, improve the flowability of slag, help the shaping of weld seam, help improving the toughness of deposited metal.But because its reduction makes the oxygen content of deposited metal increase, toughness reduces on the contrary during too high levels.General mainly add in the manganese ore mode.
MgO: for the basicity of adjusting slag adds.Have the deposited metal of raising impact flexibility, reduce the effect of diffusible hydrogen content.Because its fusing point is higher, improve the viscosity of slag, suppressed the flowability of slag, so it is bad to add when excessive the removability of slag, especially welding is prone to defectives such as undercut and slag inclusion in the groove.Generally add by magnesia.
Al
2O
3: the adjustment agent of viscosity coefficient of dross, can adjust the flowability of slag.But the viscosity of slag is too high during too high levels, and welding bead easily produces undercut and pit, and figuration of bead is degenerated.General form by bauxite or flint clay adds.
CaF
2: decompose the dividing potential drop that the fluorine gas that produces reduces hydrogen in the arc atmosphere, thereby reduce diffusible hydrogen content, in addition, also reduce the oxygen content in the deposited metal.Generally the mode by fluorite adds.
TiO
2: slag is taken off in stable arc, improvement, also helps anti-pore performance simultaneously, but costs an arm and a leg.Generally add by rutile.
Ferroalloy: improve the flowability of weld metal, have deoxidation simultaneously, generally adopt silicomanganese or ferrosilicon, also have in order to improve special mechanical property and adopt other ferroalloys, as the ferrochrome in the stainless steel solder flux.
The present invention is applicable to the prescription adjustment of various sintered fluxes.
The specific embodiment
(1) solder flux manufacturing process
After accurate reinspection of powder raw material process with need; carrying out proportioning according to prescription after sieving weighs; wherein the mineral powder is crossed 80 mesh sieves; alloyed powder is crossed 60 mesh sieves; wherein the skull powder accounts for 1/3 of powder raw material; put into then in the dried agitator and stir; put into wet agitator after stirring; add the stirring of wetting of waterglass about 25% simultaneously; put into comminutor after stirring and carry out granulation; the flux particle that causes is sent into 200 ℃ drying oven dries, and sieves after sloughing moisture, particle size range is sent into sintering furnace at 10～40 purpose solder flux carry out sintering; 800～900 ℃ of sintering temperatures; sintering time 60～80 minutes is come out of the stove after check; sieve; packing; warehouse-in, all process steps of solder flux production is finished.
(2) embodiment
SJ101 among the embodiment, SJ301, SJ501 are the product of The Lincoln Electric Heli (Zhengzhou) Welding Materials Co., Ltd., skull also is the skull of corresponding solder flux, by the corresponding component of adjusting the inside of analytical chemistry composition, suitably increase and decrease raw materials such as flint clay, magnesia, thereby make new corresponding solder flux, and guarantee processing performance and mechanical property.Detection shows that mechanical property satisfies GB/T12470-2003, GB/T5293-1999.
Embodiment 1:
New SJ101 solder flux three composition, the mechanical property made after former SJ101 solder flux, SJ101 skull, the mixing are as shown in table 1.
The each side contrast of table 1SJ101
New 101 flux basicities are 1.8, and the pine dress is than 1.23 gram/cm
3, arc burning is stable in the welding process, and appearance of weld is attractive in appearance, and it is easy to take off slag, and weld seam has good low-temperature impact toughness.
Embodiment 2:
New SJ301 solder flux three composition, the mechanical property made after former SJ301 solder flux, SJ301 skull, the mixing are as shown in table 2.
The each side contrast of table 2SJ301
New 301 flux basicities are 1.0, and the pine dress is than 1.2 gram/cm
3, arc burning is stable in the welding process, and appearance of weld is attractive in appearance, and it is easy to take off slag, and weld seam has good low-temperature impact toughness.
Embodiment 3:
New SJ501 solder flux three composition, the mechanical property made after former S5101 solder flux, SJ501 skull, the mixing are as shown in table 3.
The each side contrast of table 3SJ501
New 501 flux basicities are 0.5～0.7, and the pine dress is than 1.2 gram/cm
3, arc burning is stable in the welding process, and appearance of weld is attractive in appearance, and it is easy to take off slag, is particularly suitable for mariages and multifibres high-speed welding.
(3) embodiments of the invention adopt three kinds of solder flux of consumption maximum in the market, and theoretical supposition should also be applicable to other trade mark solder flux.
Claims (1)
- The invention provides a kind of method that reduces cost of sintered flux, characteristics are that the skull of sintered flux is recycled, and grind to form powdery, suitably adjust flux composition, and the processing performance of solder flux is intact, cooperates corresponding welding wire still can guarantee mechanical property.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2009100650850A CN101585122A (en) | 2009-06-01 | 2009-06-01 | Method for reducing cost of sintered flux |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2009100650850A CN101585122A (en) | 2009-06-01 | 2009-06-01 | Method for reducing cost of sintered flux |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101585122A true CN101585122A (en) | 2009-11-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2009100650850A Pending CN101585122A (en) | 2009-06-01 | 2009-06-01 | Method for reducing cost of sintered flux |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2669391A1 (en) | 2012-06-01 | 2013-12-04 | Calvia Spólka Z Ograniczona Odpowiedzialnoscia | Method of processing slag into raw material and slag processing line |
| CN104400256A (en) * | 2014-10-31 | 2015-03-11 | 天津市宏远钛铁有限公司 | Low-hygroscopicity submerged-arc welding sintered flux and preparation method thereof |
| CN109014657A (en) * | 2018-09-13 | 2018-12-18 | 郑州凤凰新材料科技有限公司 | A kind of High Speed Welding sintered flux and preparation method thereof |
-
2009
- 2009-06-01 CN CNA2009100650850A patent/CN101585122A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2669391A1 (en) | 2012-06-01 | 2013-12-04 | Calvia Spólka Z Ograniczona Odpowiedzialnoscia | Method of processing slag into raw material and slag processing line |
| CN104400256A (en) * | 2014-10-31 | 2015-03-11 | 天津市宏远钛铁有限公司 | Low-hygroscopicity submerged-arc welding sintered flux and preparation method thereof |
| CN109014657A (en) * | 2018-09-13 | 2018-12-18 | 郑州凤凰新材料科技有限公司 | A kind of High Speed Welding sintered flux and preparation method thereof |
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| C06 | Publication | ||
| PB01 | Publication | ||
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
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Application publication date: 20091125 |