CN102198575B - Acidic flux cored wire for ultralow-hydrogen low-temperature steel - Google Patents
Acidic flux cored wire for ultralow-hydrogen low-temperature steel Download PDFInfo
- Publication number
- CN102198575B CN102198575B CN 201110131892 CN201110131892A CN102198575B CN 102198575 B CN102198575 B CN 102198575B CN 201110131892 CN201110131892 CN 201110131892 CN 201110131892 A CN201110131892 A CN 201110131892A CN 102198575 B CN102198575 B CN 102198575B
- Authority
- CN
- China
- Prior art keywords
- content
- powder
- low
- equal
- less
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Abstract
The invention relates to an acidic flux cored wire for ultralow-hydrogen low-temperature steel, consisting of a welding wire steel sheet skin and a flux core, wherein the traditional Chinese powder of the flux core comprises rutile, electrolytic manganese, reduced iron powder, magnesium powder, ferroboron, lithium fluoride, metallic nickel powder, ferrotitanium, titanate, rare-soil silicon, cryolite and feldspar. A steel belt used for the surface of the welding wire comprises the following components by weight percent: less than or equal to 0.05% of C, less than or equal to 0.04% of Si, less than or equal to 3.5% and more than or equal to 1.5% of Mn, less than or equal to 0.015% of P, less than or equal to 0.015% of S and the balance of Fe. The acidic flux cored wire has the advantages that the low-temperature impact toughness is good and the hydrogen content is low; and the acidic flux cored wire is applicable to welding of a large spherical tank of liquefied petroleum gas, an ocean platform and a drilling ship.
Description
Technical field
The present invention relates to the welding material of metal field, particularly relate to a kind of acidic flux cored wire for ultralow-hydrogen low-temperature steel.
Background technology
Along with the fast development of China's ocean platform and petrochemical industry, the offshore operation platform such as various drilling platforms, diving boat and boats and ships are developed swift and violent, and producing area also expands the deep sea low temperature district to by warm area in the shallow sea in past.For the sensitiveness of anti-welding crackle, often build with low-temperature steel, and then flux-cored demand also increases day by day.Alkalescence lime-titania type flux-cored wire, diffusible hydrogen content is generally 8-12ml/100g, in medicinal powder, add a large amount of basic anhydride, improve the basicity of slag, so so that the low-temperature impact toughness of weld metal is improved, but produced series of problems: slag fluidity is excessive, and welding procedure is poor thereupon, splash large, therefore in the welding use procedure, also be subject to certain limitation.Present existing low-temperature steel solder wire with acidity core because slag system by rutile, silicate etc. carry out slag making, and its welding performance is excellent, but has a very large problem: be exactly that low-temperature flexibility is poor, do not reach-60 ℃ greater than the 47J requirement, thereby limited the use in welding.
Summary of the invention
The technical problem to be solved in the present invention is: the technical problem that solves existing low-temperature steel solder wire with acidity core deposited metal diffusible hydrogen amount high and low temperature poor toughness.The invention provides a kind of acidic flux cored wire for ultralow-hydrogen low-temperature steel, it has advantages of, and deposited metal diffusible hydrogen amount is low, low temperature is tough good.
Technical scheme provided by the invention is, a kind of acidic flux cored wire for ultralow-hydrogen low-temperature steel, be comprised of welding wire steel disc epidermis and medicine core, medicine core traditional Chinese medicine powder comprises rutile, electrolytic manganese, reduced iron powder, magnesium powder, ferro-boron, lithium fluoride, metal nickel powder, ferrotianium, titanate, rare earth silicon, ice crystal, feldspar.Lithium fluoride and rare earth silicon can reduce hydrogen in the weld seam, nitrogen content, the low-temperature impact toughness of Effective Raise weld seam.
As preferably, the mass percent of each composition of medicinal powder is rutile 38-45%, electrolytic manganese 11-13%, reduced iron powder 3-4%, magnesium powder 2-3%, ferro-boron 3-4%, lithium fluoride 5-8%, metal nickel powder 8-9%, ferrotianium 6-9%, titanate 2-3%, rare earth silicon 1-2%, ice crystal 1-2%, feldspar 8-9%.
As preferably, TiO2 content 〉=96% in the rutile, Mn content 〉=99% in the electrolytic manganese, Fe content 〉=99% in the reduced iron powder, Mg content 〉=98% in the magnesium powder, B content 19-21% in the ferro-boron, LiF content 〉=95% in the lithium fluoride, Ni content 〉=98% in the metal nickel powder, Ti content 20-22% in the ferrotianium, P content≤0.01%, S content≤0.01% in the titanate, P content≤0.01%, S content≤0.01% in the rare earth silicon, Na in the ice crystal
3AlF
6Content 〉=98%, SiO2 content 65-68% in the feldspar.
As preferably, the steel band composition that welding wire surface uses and mass percent are Fe as C≤0.05%, Si≤0.04%, 1.5≤Mn≤3.5, P≤0.015, S≤0.015%, surplus.P≤0.015%, S≤0.015% in the flux-cored steel band commonly used can effectively improve the mechanical property of flux-cored wire by reducing P, S content.
Technique effect of the present invention is: because be solder wire with acidity core, welding wire can comprise the all-position welding of downward welding in the vertical position, and arc stability splashes minimum, and appearance of weld is attractive in appearance; Owing to having added lithium fluoride and rare earth silicon, hydrogen in the weld seam, nitrogen content have been reduced, deposited metal diffusible hydrogen content mean value≤5ml/100g that mercury process records, the low-temperature impact toughness of while Effective Raise weld seam, impact value is much larger than 47J during mean temperature-60 ℃, the welding wire percentage elongation also improves, and can satisfy the welding requirements of the structure that low-temperature flexibility has relatively high expectations; By control steel band P, S content, the yield strength of welding wire, hot strength, extensibility improve, and mechanical property improves a lot, and has further improved low-temperature impact toughness.Be applicable to the liquefied petroleum gas large-size spherical tank, the welding of ocean platform and drilling well boats and ships.
The specific embodiment
Below in conjunction with specific embodiment, the present invention is described in further detail.Should be understood that these embodiment just in order to demonstrate the invention, but not limit the scope of the invention by any way.
The preparation that embodiment 1 ultralow-hydrogen low is flux-cored
Adopt manufacturing process commonly used to prepare flux-cored wire: the powder of each component is crossed 80 mesh sieves, by proportioning (table 1) various medicinal powder being put into mixed powder machine stirred 40 minutes, then mixed-powder is added in V-type steel band (the steel band composition the sees Table 2) groove, medicinal powder accounts for the 16-17% of welding wire gross weight; Forming machine is closed with the steel band groove; Wire drawing machine is stretched as 1.2mm with gage of wire, and different medicine cores and steel band make up to get finished product (seeing Table 3).
Table 1 flux-cored wire medicinal powder prescription (mass percent %)
Table 2 steel band composition (mass percent %)
| The steel band sequence number | C | Si | Mn | P | S |
| Steel band 1 | 0.05 | 0.04 | 1.3 | 0.015 | 0.015 |
| Steel band 2 | 0.03 | 0.02 | 3.5 | 0.006 | 0.006 |
| Steel band 3 | 0.06 | 0.04 | 3.5 | 0.03 | 0.03 |
The welding wire of the different medicine cores of table 3 and steel band combination
Annotate: the composition of common acid medicine core and mass percent are in the table 3: rutile 48%, silicomanganese 12%, reduced iron powder 5%, magnesia 3%, ferro-boron 4%, sodium fluoride 7%, metal nickel powder 7%, ferrotianium 8%, fluorite 2%, feldspar 4%.
Embodiment 2 flux-cored wire performance tests
According to the property indices of welding wire in the GB/T 10045 detection method test charts 3, result such as table 4:
The different welding wire performance indications of table 4
Experimental result shows that the welding wire deposited metal diffusible hydrogen content low-temperature impact toughness low, weld seam of acid medicine core preparation of the present invention is good, and percentage elongation improves; Welding wire yield strength, hot strength, the extensibility of steel band preparation of the present invention improve, and mechanical property improves a lot, and has further improved low-temperature impact toughness.
Take above-mentioned foundation desirable embodiment of the present invention as enlightenment, by above-mentioned description, the relevant staff can in the scope that does not depart from this invention technological thought, carry out various change and modification fully.The technical scope of this invention is not limited to the content on the specification, must determine its technical scope according to the claim scope.
Claims (3)
1. low-temperature steel solder wire with acidity core, formed by welding wire steel disc epidermis and medicine core, it is characterized in that medicine core traditional Chinese medicine powder comprises rutile, electrolytic manganese, reduced iron powder, magnesium powder, ferro-boron, lithium fluoride, metal nickel powder, ferrotianium, titanate, rare earth silicon, ice crystal and feldspar, the mass percent of each composition is rutile 38-45%, electrolytic manganese 11-13%, reduced iron powder 3-4%, magnesium powder 2-3%, ferro-boron 3-4%, lithium fluoride 5-8%, metal nickel powder 8-9%, ferrotianium 6-9%, titanate 2-3%, rare earth silicon 1-2%, ice crystal 1-2%, feldspar 8-9%.
2. the low-temperature steel solder wire with acidity core of claim 1 is characterized in that TiO in the rutile
2Content 〉=96%, Mn content 〉=99% in the electrolytic manganese, Fe content 〉=99% in the reduced iron powder, Mg content 〉=98% in the magnesium powder, B content 19-21% in the ferro-boron, LiF content 〉=95% in the lithium fluoride, Ni content 〉=98% in the metal nickel powder, Ti content 20-22% in the ferrotianium, P content≤0.01%, S content≤0.01% in the titanate, P content≤0.01%, S content≤0.01% in the rare earth silicon, Na in the ice crystal
3AlF
6Content 〉=98%, SiO in the feldspar
2Content 65-68%.
3. the low-temperature steel solder wire with acidity core of claim 1 is characterized in that steel band composition and mass percent that welding wire surface uses are C≤0.05%, Si≤0.04%, 1.5≤Mn≤3.5, P≤0.015, S≤0.015%, and surplus is Fe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110131892 CN102198575B (en) | 2011-05-20 | 2011-05-20 | Acidic flux cored wire for ultralow-hydrogen low-temperature steel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110131892 CN102198575B (en) | 2011-05-20 | 2011-05-20 | Acidic flux cored wire for ultralow-hydrogen low-temperature steel |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102198575A CN102198575A (en) | 2011-09-28 |
| CN102198575B true CN102198575B (en) | 2013-02-20 |
Family
ID=44659705
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201110131892 Expired - Fee Related CN102198575B (en) | 2011-05-20 | 2011-05-20 | Acidic flux cored wire for ultralow-hydrogen low-temperature steel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102198575B (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102407411B (en) * | 2011-10-11 | 2013-08-07 | 北京工业大学 | Manganese-containing boron iron-based wear-resistant flux-cored wire for surfacing and preparation method of surfacing alloy |
| CN102489902B (en) * | 2011-12-09 | 2014-01-15 | 四川大西洋焊接材料股份有限公司 | Metal powder type flux-cored wire used for welding high-impact-toughness steel |
| CN104439760B (en) * | 2014-11-21 | 2016-08-24 | 宁波隆兴焊割科技股份有限公司 | A kind of for flux-cored wire welding low-temperature steel and preparation method thereof |
| CN106334884B (en) * | 2016-10-17 | 2018-12-14 | 天津市永昌焊丝有限公司 | A kind of bridge steel high-strength and high ductility gas-shielded flux-cored wire |
| CN106862801A (en) * | 2017-04-28 | 2017-06-20 | 天津市永昌焊丝有限公司 | A kind of full-automatic gas-shielded flux-cored wire of pipe line steel |
| CN109623193B (en) * | 2018-12-26 | 2021-02-09 | 中国船舶重工集团公司第七二五研究所 | Low-hydrogen high-toughness seamless flux-cored wire for low-temperature steel and preparation method thereof |
| CN112453756B (en) * | 2020-11-19 | 2022-11-29 | 天津大桥金属焊丝有限公司 | High-strength and high-toughness gas-shielded flux-cored wire |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3476125B2 (en) * | 1998-12-09 | 2003-12-10 | 株式会社神戸製鋼所 | Flux-cored wire for duplex stainless steel welding |
| JP2000263284A (en) * | 1999-03-18 | 2000-09-26 | Nippon Steel Corp | One-side welding method for steel for low-temperature use |
| CN101450426B (en) * | 2008-12-31 | 2010-12-15 | 宁波隆兴焊割科技股份有限公司 | Low-temperature steel flux-cored wire |
| CN101804533A (en) * | 2010-04-27 | 2010-08-18 | 上海林肯电气有限公司 | Gas shielded flux-cored wire for welding with low temperature, high toughness and full positions |
| CN101850484A (en) * | 2010-06-23 | 2010-10-06 | 南通晨曦焊业有限公司 | Flux-cored wire of low-temperature steel |
-
2011
- 2011-05-20 CN CN 201110131892 patent/CN102198575B/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN102198575A (en) | 2011-09-28 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102198575B (en) | Acidic flux cored wire for ultralow-hydrogen low-temperature steel | |
| CN105269174B (en) | A kind of ocean engineering 460MPa grades of flux-cored wires and its application | |
| CN106086625B (en) | The welding material connect for submerged arc welding or gas metal arc welding | |
| CN101450426B (en) | Low-temperature steel flux-cored wire | |
| CN103042321B (en) | Metal powder-cored type nitrogen austenite stainless steel flux-cored wire | |
| CN104400250B (en) | A kind of flux-cored | |
| CN101745755B (en) | Flux cored wire for gas shielded welding of weathering steel | |
| CN107350659B (en) | 460MPa grade seamless flux-cored wire and manufacturing method suitable for all-position welding | |
| CN104959748A (en) | Flux-cored wire special for maritime work low-temperature high-strength steel | |
| CN103692110A (en) | Gas-shielded flux-cored wire for maritime engineering | |
| CN110170765B (en) | High-manganese austenite ultralow-temperature steel matched acid welding rod for marine LNG storage tank and preparation method thereof | |
| CN102046325A (en) | Flux-cored wire for welding of duplex stainless steel which enables the miniaturization of solidified crystal particles | |
| CN111618479B (en) | Welding rod for 5% Ni steel and preparation method thereof | |
| CN113414519B (en) | ENi6620 nickel-based welding rod for alternating current and preparation method and welding method thereof | |
| CN103962746B (en) | A kind of arc welding gas shielded flux cored wire | |
| CN110842394B (en) | Acid red flux stainless steel electrode with high crack resistance and porosity resistance | |
| CN105195919A (en) | Gas protection welding wire for high-strength weathering steel and steel for gas protection welding wire | |
| CN105710558A (en) | Flux-cored wire and welding flux used for submerged-arc welding of low-temperature steel | |
| CN106078004A (en) | A kind of low temperature spherical tank ultralow-hydrogen low high-tenacity welding electrodes | |
| CN103273213A (en) | High-strength high-toughness submerged arc welding wires | |
| CN101850484A (en) | Flux-cored wire of low-temperature steel | |
| CN104772582B (en) | A kind of high intensity low hydrogen self-protection flux-cored wire suitable for petroleum pipeline | |
| CN104400253A (en) | Submerged-arc welding wire for constructing ocean platform | |
| CN104259684A (en) | Self-protection flux-cored wire for welding X90 pipeline steel and manufacturing method of self-protection flux-cored wire | |
| CN105269176B (en) | Gas shielded flux cored wire for the steel of resistance to cargo tank corrosion and preparation method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130220 Termination date: 20200520 |