CN102950396A - Self-protection flux-cored wire special for 20-control chromium steel welding - Google Patents
Self-protection flux-cored wire special for 20-control chromium steel welding Download PDFInfo
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- CN102950396A CN102950396A CN2012103070261A CN201210307026A CN102950396A CN 102950396 A CN102950396 A CN 102950396A CN 2012103070261 A CN2012103070261 A CN 2012103070261A CN 201210307026 A CN201210307026 A CN 201210307026A CN 102950396 A CN102950396 A CN 102950396A
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Abstract
The invention discloses a self-protection flux-cored wire special for 20-control chromium steel welding. The self-protection flux-cored wire comprises flux-cored powder, and a steel shell coating the flux-cored powder, wherein the flux-cored powder comprises the following components in percentage by weight: 0-4 percent of graphite, 0-5 percent of quartz, 0-25 percent of fluorite, 0-20 percent of rutile, 0-5 percent of marble, 2-15 percent of aluminum magnesium alloy, 1-5 percent of silicon iron, 10-15 percent of ferromanganese iron, 2-5 percent of nickel powder, 1-5 percent of chromium iron and the balance of iron powder. The self-protection flux-cored wire special for 20-control chromium steel welding has the advantages of welding rods and solid wires special for 20-control chromium steel welding, namely automatic welding can be realized, and during welding, small splashing is generated, and the self-protection flux-cored wire has the characteristics of good welding process.
Description
Technical field
The present invention relates to welding wire, specifically a kind of special self-protection flux-cored wire.
Background technology
Flux-cored wire is a kind of Novel welding material that develops rapidly in recent years, has obtained to use widely in industrially developed country.According to the data introduction: Japan from 1985 so far its welding rod ratio of accounting for whole wlding drop to 20% from 45%; And the flux-cored wire proportion has reached nearly 30%.The welding rod ratio drops to less than 40% in the U.S., and flux-cored wire is then near 40%; Every Western Europe country's welding rod accounts for 30%, and flux-cored wire accounts for 20%.This shows that industrially developed country's tradition welding rod ratio constantly descends over past ten years, and the ratio of flux-cored wire in whole wlding increases substantially.
Flux-cored wire is also referred to as flux cored wire, can be by adjusting kind and the ratio of medicine core additive, the adjustment that its alloying component can be flexible designs easily the welding material of various different purposes, because can't be smelted with rolling so many kinds of flux-cored wire are solid welding wires.Flux-cored wire is divided into again seamed and seamless flux-cored wire, and the finished silk of seamless flux-cored wire can carry out copper plating treatment, and humidity resistance and the electric conductivity in the welding process in the welding wire keeping process all are better than seamed cored wire.
20 control chromium steel are the special-purpose steel grade of nuclear power CPR1000 conventional island, and current existing welding rod and solid core welding wire product emerge, but also do not have special-purpose flux-cored wire, and welding rod and solid core welding wire are in use, respectively have deficiency: welding rod can only be used for manual welding, can not be continuously, automatic welding, and production efficiency is low; Though and solid welding wire can be realized automatic welding, production efficiency is high, processing performance relatively poor (mainly be splash larger).Therefore, develop that to be exclusively used in the flux-cored wire special meanings of 20 controls on the chromium steel very great.
Summary of the invention
For this reason, what technical problem to be solved by this invention was in the prior art to be used for 20 control chromium steel welding only is welding rod and solid welding wire, lacks the problem of special-purpose flux-cored wire, and a kind of special self-protection flux-cored wire that is exclusively used in 20 control chromium steel welding is provided.
For solving the problems of the technologies described above, a kind of 20 control chromium steel welding special self-protection flux-cored wires of the present invention comprise medicine core powder, and the box hat that wraps up described medicine core powder,
Described medicine core powder forms and content (representing with mass fraction) comprising: graphite 0-4%, quartzy 0-5%, fluorite 0-25%, rutile 0-20%, marble 0-5%, almag 2-15%, ferrosilicon 1-5%, ferromanganese 10-15%, nickel powder 2-5%, ferrochrome 1-5%, surplus are iron powder.
The inserts of described medicine core powder is 15%-30%.
Described medicine core powder form and content (representing take mass fraction) as: graphite 1%, quartzy 3% fluorite 18%, rutile 18%, marble 2%, almag 3%, No. 45 ferrosilicon 3%, low-carbon ferromanganese 12%, metal nickel powder 3%, chromic carbide iron 2%, surpluses are iron powder, and the inserts of described medicine core powder is 20%.
Described medicine core powder forms and content (representing take mass fraction) is iron powder as: graphite 1%, quartzy 1%, fluorite 25%, rutile 0%, marble 0%, almag 15%, No. 45 ferrosilicon 3%, low-carbon ferromanganese 12%, metal nickel powder 3%, chromic carbide iron 2%, surpluses, and the inserts of described medicine core powder is 20%.
Described medicine core powder forms and content (representing take mass fraction) is iron powder as: graphite 1%, quartzy 1%, fluorite 20%, rutile 18%, almag 2%, marble 0%, No. 45 ferrosilicon 3%, low-carbon ferromanganese 12%, metal nickel powder 3%, chromic carbide iron 2%, surpluses, and the inserts of described medicine core powder is 20%.
Described medicine core powder forms and content (representing take mass fraction) is iron powder as: graphite 2%, quartzy 0%, fluorite 0%, rutile 0%, marble 0%, almag 2%, No. 45 ferrosilicon 2%, low-carbon ferromanganese 8%, metal nickel powder 2%, medium carbon ferrochrome 1.5%, surpluses, and the inserts of described medicine core powder is 30%.
Described box hat is that low carbon steel pipe or mild-carbon steel strip consist of.
Technique scheme of the present invention has the following advantages compared to existing technology:
1, flux-cored wire of the present invention is exclusively used in 20 control chromium steel welding, with the two advantage of the welding rod that is exclusively used in 20 control chromium steel welding and solid welding wire, namely not only can realize automatic welding, and during welding, splashing of generation is less, has the good characteristics of welding procedure.
The specific embodiment
A kind of 20 control chromium steel welding special self-protection flux-cored wires of the present invention comprise medicine core powder, and the box hat that wraps up described medicine core powder, and described box hat is that high-quality low carbon steel pipe or high-quality mild-carbon steel strip consist of, and the inserts of described medicine core powder is 15%-30%.
Embodiment 1
Adopt high quality carbon steel band coating medicinal powder mode or high-quality low carbon steel pipe to fill the medicinal powder mode and make, filling rate 20%, medicine core powder forms and content (representing with mass fraction):
Graphite 1%, quartz 3%, fluorite 18%, rutile 18%, marble 2%, almag 3%, No. 45 ferrosilicon 3%, low-carbon ferromanganese 12%, metal nickel powder 3%, chromic carbide iron 2%, surplus are iron powder.
Embodiment 2
Adopt high quality carbon steel band coating medicinal powder mode or high-quality low carbon steel pipe to fill the medicinal powder mode and make, filling rate 20%, medicinal powder forms and content (representing with mass fraction):
Graphite 1%, quartz 1%, fluorite 25%, rutile 0%, marble 0%, almag 15%, No. 45 ferrosilicon 3%, low-carbon ferromanganese 12%, metal nickel powder 3%, chromic carbide iron 2%, surplus are iron powder.
Embodiment 3
Adopt high quality carbon steel band coating medicinal powder mode or high-quality low carbon steel pipe to fill the medicinal powder mode and make, filling rate 20%, medicinal powder forms and content (representing with mass fraction):
Graphite 1%, quartz 1%, fluorite 20%, rutile 18%, almag 2%, marble 0%, No. 45 ferrosilicon 3%, low-carbon ferromanganese 12%, metal nickel powder 3%, chromic carbide iron 2%, surplus are iron powder.
Embodiment 4
Adopt high-quality mild-carbon steel strip coating medicinal powder or high-quality low carbon steel pipe to fill the medicinal powder mode and make, filling rate 30%, medicinal powder forms and content (representing with mass fraction):
Graphite 2%, quartz 0%, fluorite 0%, rutile 0%, marble 0%, 2%, No. 45 ferrosilicon 2% of almag, low-carbon ferromanganese 8%, metal nickel powder 2%, medium carbon ferrochrome 1.5%, surplus are iron powder.
Table one, flux-cored wire deposited metals composition
Table two, welding wire deposited metals mechanical property
The Main Function of each component of flux-cored wire Chinese medicine core powder of the present invention:
| The composition title | Main Function |
| Graphite | Gas making |
| Quartzy | Slag making |
| Rutile | Stabilising arc, slag making, take off slag |
| Fluorite | Slag making, shoddye |
| Almag | Deoxidation, stabilising arc |
| Marble | Gas making, slag making |
| Ferrosilicon | Deoxidation, alloying |
| Ferromanganese | Deoxidation, alloying |
| Metal nickel powder | Alloying |
| Ferrochrome | Alloying |
| Reduced iron powder | Synergy, stabilising arc |
The welding method of 20 control chromium steel welding special self-protection flux-cored wires of the present invention
As an electrode (usually connecing positive pole, i.e. dc reverse connection), mother metal is as another utmost point with fusible flux-cored wire in the flux cored wire arc welding welding.Medicinal powder is equipped with in welding wire inside, during welding, melts medicinal powder, welding wire metal, base metals and produce complicated physics-chemical reaction under the arc heat effect, forms gas to welding pool-slag Combined Protection or protects from gas making.
Although the present invention elaborates it by the specific embodiment; but; those skilled in the art should be understood that any form that does not exceed the claim protection domain made on this basis and the variation of details, all belong to invention which is intended to be protected.
Claims (7)
1. a control chromium steel welding special self-protection flux-cored wire comprises medicine core powder, and the box hat that wraps up described medicine core powder, it is characterized in that:
Described medicine core powder forms and content (representing with mass fraction) comprising: graphite 0-4%, quartzy 0-5%, fluorite 0-25%, rutile 0-20%, marble 0-5%, almag 2-15%, ferrosilicon 1-5%, ferromanganese 10-15%, nickel powder 2-5%, ferrochrome 1-5%, surplus are iron powder.
2. 20 control chromium steel according to claim 1 weld flux-cored wire specials, and it is characterized in that: the inserts of described medicine core powder is 15%-30%.
3. 20 control chromium steel according to claim 2 weld flux-cored wire specials, it is characterized in that: described medicine core powder forms and content (representing take mass fraction) is iron powder as: graphite 1%, quartzy 3%, fluorite 18%, rutile 18%, marble 2%, almag 3%, No. 45 ferrosilicon 3%, low-carbon ferromanganese 12%, metal nickel powder 3%, chromic carbide iron 2%, surpluses, and the inserts of described medicine core powder is 20%.
4. 20 control chromium steel according to claim 2 weld flux-cored wire specials, it is characterized in that: described medicine core powder forms and content (representing take mass fraction) is iron powder as: graphite 1%, quartzy 1%, fluorite 25%, rutile 0%, marble 0%, almag 15%, No. 45 ferrosilicon 3%, low-carbon ferromanganese 12%, metal nickel powder 3%, chromic carbide iron 2%, surpluses, and the inserts of described medicine core powder is 20%.
5. 20 control chromium steel according to claim 2 weld flux-cored wire specials, it is characterized in that: described medicine core powder forms and content (representing take mass fraction) is iron powder as: graphite 1%, quartzy 1%, fluorite 20%, rutile 18%, almag 2%, marble 0%, No. 45 ferrosilicon 3%, low-carbon ferromanganese 12%, metal nickel powder 3%, chromic carbide iron 2%, surpluses, and the inserts of described medicine core powder is 20%.
6. 20 control chromium steel according to claim 2 weld flux-cored wire specials, it is characterized in that: described medicine core powder forms and content (representing take mass fraction) is iron powder as: graphite 2%, quartzy 0%, fluorite 0%, rutile 0%, marble 0%, almag 2%, No. 45 ferrosilicon 2%, low-carbon ferromanganese 8%, metal nickel powder 2%, medium carbon ferrochrome 1.5%, surpluses, and the inserts of described medicine core powder is 30%.
7. each described 20 control chromium steel welding flux-cored wire specials according to claim 1-6, it is characterized in that: described box hat is that low carbon steel pipe or mild-carbon steel strip consist of.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201210307026.1A CN102950396B (en) | 2012-08-24 | 2012-08-24 | Self-protection flux-cored wire special for 20-control chromium steel welding |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210307026.1A CN102950396B (en) | 2012-08-24 | 2012-08-24 | Self-protection flux-cored wire special for 20-control chromium steel welding |
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| CN102950396A true CN102950396A (en) | 2013-03-06 |
| CN102950396B CN102950396B (en) | 2014-12-17 |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104588907A (en) * | 2014-12-09 | 2015-05-06 | 天津大桥金属焊丝有限公司 | Stainless steel open arc flux-cored wire for transition layer overlaying |
| CN106181127A (en) * | 2016-08-24 | 2016-12-07 | 天津大桥金属焊丝有限公司 | Argon filling self-shield argon tungsten-arc welding flux-cored wire is exempted from the stainless steel pipes back side |
| CN107322193A (en) * | 2017-08-30 | 2017-11-07 | 苏州新普新材料科技有限公司 | A kind of preparation method of welding rod |
| CN108044256A (en) * | 2017-12-15 | 2018-05-18 | 武汉铁锚焊接材料股份有限公司 | Nuclear power 20 control chromium steel gas-shielded flux-cored wires and its welding method |
| CN108907499A (en) * | 2018-08-03 | 2018-11-30 | 济南法瑞钠焊接器材股份有限公司 | High alkalinity carbon steel self-protection flux-cored wire |
| CN110253174A (en) * | 2019-06-19 | 2019-09-20 | 鞍钢未来钢铁研究院有限公司 | A kind of continuous cast roller flux-cored welding wire for overlaying welding and preparation method |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104741823B (en) * | 2015-03-09 | 2016-12-07 | 西安理工大学 | 0Cr13Ni5Mo rustless steel self-shielded welding wire and preparation method thereof |
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| CN100999041A (en) * | 2006-12-28 | 2007-07-18 | 燕山大学 | Series flux cord welding rod used for pile-up welding reparing and remanufacturing large type medium high carbon steel parts |
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| CN102139423A (en) * | 2010-02-02 | 2011-08-03 | 北京赛亿科技股份有限公司 | Cover surface layer self-protecting metal core surfacing welding wire for repairing cold-rolled backup roller |
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Patent Citations (5)
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| US3024137A (en) * | 1960-03-17 | 1962-03-06 | Int Nickel Co | All-position nickel-chromium alloy welding electrode |
| CN100999041A (en) * | 2006-12-28 | 2007-07-18 | 燕山大学 | Series flux cord welding rod used for pile-up welding reparing and remanufacturing large type medium high carbon steel parts |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104588907A (en) * | 2014-12-09 | 2015-05-06 | 天津大桥金属焊丝有限公司 | Stainless steel open arc flux-cored wire for transition layer overlaying |
| CN106181127A (en) * | 2016-08-24 | 2016-12-07 | 天津大桥金属焊丝有限公司 | Argon filling self-shield argon tungsten-arc welding flux-cored wire is exempted from the stainless steel pipes back side |
| CN107322193A (en) * | 2017-08-30 | 2017-11-07 | 苏州新普新材料科技有限公司 | A kind of preparation method of welding rod |
| CN108044256A (en) * | 2017-12-15 | 2018-05-18 | 武汉铁锚焊接材料股份有限公司 | Nuclear power 20 control chromium steel gas-shielded flux-cored wires and its welding method |
| CN108907499A (en) * | 2018-08-03 | 2018-11-30 | 济南法瑞钠焊接器材股份有限公司 | High alkalinity carbon steel self-protection flux-cored wire |
| CN110253174A (en) * | 2019-06-19 | 2019-09-20 | 鞍钢未来钢铁研究院有限公司 | A kind of continuous cast roller flux-cored welding wire for overlaying welding and preparation method |
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| CN102950396B (en) | 2014-12-17 |
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