CN104014949A - High-toughness alloy system heat-resistant steel electrode - Google Patents
High-toughness alloy system heat-resistant steel electrode Download PDFInfo
- Publication number
- CN104014949A CN104014949A CN201410236776.3A CN201410236776A CN104014949A CN 104014949 A CN104014949 A CN 104014949A CN 201410236776 A CN201410236776 A CN 201410236776A CN 104014949 A CN104014949 A CN 104014949A
- Authority
- CN
- China
- Prior art keywords
- resistant steel
- alloy system
- slag
- good
- coating
- 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.)
- Pending
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
- B23K35/22—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by the composition or nature of the material
- B23K35/36—Selection of non-metallic compositions, e.g. coatings, fluxes; Selection of soldering or welding materials, conjoint with selection of non-metallic compositions, both selections being of interest
- B23K35/365—Selection of non-metallic compositions of coating materials either alone or conjoint with selection of soldering or welding materials
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Nonmetallic Welding Materials (AREA)
Abstract
The invention provides a high-toughness alloy system heat-resistant steel electrode. An H08E wire rod serves as a core wire, wherein the content of S and the content of P in the H08E wire rod are low; then, a CaO-CaF1-SiO2-ZrO2-MgO novel alkaline slag system is adopted, and transition is conducted on alloying elements in a coating mode, wherein a 1Cr-0.5Mo-V alloy system serves as weld metal. The high-toughness alloy system heat-resistant steel electrode has the advantages that a good all-position welding property is achieved, arc combustion is stable in the welding process, the spreadability is high, the fusion property is good, splashing is less, weld shaping is compact and attractive in appearance, and slag can be easily separated. The high-toughness alloy system heat-resistant steel electrode has the advantages of being good in production process performance and good in surface quality, allowing eccentricity to be easily controlled, being high in finished product rate, and the like; meanwhile, a coating obtained through the reasonable matching has high moisture resistance and bending resistance; deposited metal is pure, and the diffusible hydrogen content is low.
Description
[technical field]
The present invention relates to a kind of high-ductility alloy series heat-resistant steel welding rod, be specifically related to a kind of high tenacity 1Cr-0.5Mo-V alloy system heat resisting steel welding rod.
[background technology]
Known, 12Cr1MoV steel plate is widely used in high pressure, superpressure boiler, overheated pipeline and the main steam line of the 580 DEG C of following work in the fields such as petrochemical industry, Coal Chemical Industry, nuclear power, steam turbine cylinder and thermoelectricity, because such steel plate environment for use is harsher, the welding material matching with it is had relatively high expectations, and in engineering, arc welding generally adopts E5515-1CMV(R317) welding rod welds.This class welding rod of selling on market now is generally being deposited the lower and unsettled problem of ballistic work, has brought larger hidden danger to the safe operation of bearing device.Up to now, the patent relevant to heat resisting steel welding rod few both at home and abroad, the patent that applicant retrieves is as follows:
Chinese patent: publication number is: CN 103264234A, this patent discloses a kind of heat resisting steel welding rod with low-temperature impact toughness, the welding rod of its proposition is mainly used in the welding of 12Cr2Mo1R steel plate, and the composition of its deposited metal and mechanical property all can not meet the requirement of 12Cr1MoV Plate Welding;
Chinese patent: publication number: CN 103008917A, this patent discloses the novel jessop welding rod of a kind of ultra supercritical, and the welding rod of its proposition is mainly used in the welding of jessop T/P92, can not be applied to the welding of 12Cr1MoV steel plate;
Chinese patent: publication number: CN 101342650A, this patent discloses a kind of heat resisting steel welding rod and using method that can resistance to annealing normalized treatment, the welding rod of its proposition is mainly used in the welding of 1.25Cr-0.5Mo steel plate, can not meet equally the welding of 12Cr1MoV steel plate;
Chinese patent: publication number: CN 103240542A, this patent discloses a kind of ultralow-hydrogen low high tenacity low-carbon (LC) and has added tungsten heat resisting steel welding rod, although the welding rod of its proposition can be for the welding of 12Cr1MoV steel plate, but in its deposited metal, contain 0.15～0.6% tungsten, and do not meet the regulation of standard (GB/T 5118-2012) to E5515-1CMV welding rod.In E5515-1CMV welding rod deposited metal, contain a certain amount of tungsten and can bring following problem: (1) tungsten is as important strategy metal, expensive, has improved material cost; (2), about tungsten is also immature to the research of 12Cr1MoV steel weld seam reliability, in engineering application, may there is certain risk.
In sum, the related heat resisting steel welding rod of above-mentioned patent or the welding for special steel plate, or its deposited metal composition not within standard prescribed limit and cost higher, larger with application of the present invention or technology path difference.
[summary of the invention]
For overcoming the deficiency existing in background technology, the invention provides a kind of high-ductility alloy series heat-resistant steel welding rod, the present invention is by selecting H08E wire rod that S, P content are low as core wire, then adopt CaO-CaF2-SiO2-ZrO2-MgO novel alkaline slag system, by coating mode transition alloy elements, weld metal is 1Cr-0.5Mo-V alloy system, the present invention has good all-position welding, in welding process, arc burning is steady, spreadability and fusion character are better, the advantages such as splash less, appearance of weld is careful attractive in appearance, and de-slag is easy.
For realizing goal of the invention as above, the present invention adopts technical scheme as described below:
A kind of high-ductility alloy series heat-resistant steel welding rod, comprises core wire and coating, and described core wire is H08E wire rod, on the outer edge surface of described core wire, is provided with coating, and the composition of described coating comprises following composition by weight percentage:
Waterglass 17～23%;
Marble 28～40%;
Fluorite 10～19%;
Zircon sand 3～8%;
Silicon powder 1～3%;
Fused magnesite 2～4%;
Ferrotianium 1～3%;
Mid-carbon fe-mn 3～6%;
Atomization ferrosilicon 3～7%;
Dehydration mica 2～4%;
Soda ash 0.5～1.5%;
Rare earth silicon and magnesium ferroalloy 0.2～1%;
Crome metal 2.5～3%;
Metal molybdenum 1～1.5%;
Vanadium iron 0.6～1.2%.
Described high-ductility alloy series heat-resistant steel welding rod, described waterglass is pure sodium silicate.
Adopt technical scheme as above, the present invention has superiority as described below:
A kind of high-ductility alloy series heat-resistant steel welding rod of the present invention, the present invention, by selecting H08E wire rod that S, P content are low as core wire, then arranges coating on the outer edge surface of H08E wire rod, in the composition of described coating:
Waterglass: Main Function is bonding powder.In the time that addition is greater than 23%, the packing of coating and intensity variation, and silicone content in weld metal is higher; In the time that addition is less than 16%, extrusion difficulty, coating rough surface, bias is larger.
Marble: Main Function is slag making, gas making, improves slag basicity, stabilising arc, desulfurization, increases slag surface tension and interfacial tension, easily causes short slag, facilitates all-position welding.In the time that addition is less than 28%, gas making deficiency, and slag fluidity is strong, and insufficient to molten pool metal protection, the mechanical property of deposited metal is worsened; In the time that addition is greater than 40%, coating fusing point is high, and welding rod burn-off rate is slower, and the viscosity of slag increases, and easily produces pore in weld seam.
Fluorite: Main Function is slag making, dehydrogenation, and can adjust fusing point and the viscosity of slag, and increasing the mobility of slag, activation molten bath, improves the removability of slag.In the time that addition is greater than 19%, the mobility of slag is excessively strong, and the protective effect of Resistance of Weld Metal weakens, and causes electric arc shakiness, de-slag difficulty; In the time that addition is less than 10%, the diffusible hydrogen of weld metal significantly increases, and increases the tendency that produces white point.
Zircon sand: Main Function is slag making, and can improve the removability of slag.
Silicon powder: Main Function is refinement molten drop, adjusts the activity of viscosity and the increase slag of slag, and can improve the extrusion performance of welding rod.In the time that addition is greater than 3%, slag viscosity increases, the increase of splashing; In the time that addition is less than 1%, the activity variation of slag, speed of welding is slack-off.
Fused magnesite: Main Function is slag making, the basicity of adjusting slag, has certain desulfurization.
Ferrotianium: Main Function is deoxidation, and can weaken the diffusion of N to metal inside, can improve plasticity and the toughness of weld metal simultaneously.
Mid-carbon fe-mn: Main Function is deoxidation, desulfurization, and to a certain amount of Mn of transition in weld metal.In the time that addition is greater than 6%, the Mn content in weld metal is higher, and the basicity of slag is excessive simultaneously, mobility variation, and appearance of weld is bad, de-slag difficulty; When addition is lower than 3% time, in welding process desulfurization insufficient, in weld metal, Mn content is on the low side, toughness is poor.
Atomization ferrosilicon: Main Function is deoxidation, and energy heat release, accelerate welding rod fusing, simultaneously can be to a certain amount of Si of transition in weld metal.In the time that addition is greater than 7%, the chemical reaction fierceness in molten bath, the increase of splashing, in weld metal, Si content is higher, and toughness is poor; When addition is lower than 3% time, weld seam deoxidation is insufficient, and welding rod burn-off rate is slower, and slag fluidity is poor.
Dehydration mica: Main Function is to improve extrusion, and energy stable arc, refinement molten drop, the gas permeability of increase coating, avoids coating cracking.In the time that addition is greater than 4%, the increase of splashing, de-slag difficulty; Welding rod extrusion variation in the time that addition is less than 2%, rough surface;
Soda ash: increase the slip of coating, be conducive to the control of welding-rod eccentricity, and there is the effect of certain stabilising arc and refinement molten drop.In the time that addition is greater than 2%, the easy moisture absorption of welding rod; Addition is lower than 0.5% time, not obvious to improving the effect of extrusion.
Rare earth magnesium ferrosilicon alloy: mainly improve mechanical property.
Crome metal and metal molybdenum: Main Function is transition alloy elements.
Vanadium iron: be the ferroalloy of vanadium and iron composition, mainly make alloy addition.
Feature of the present invention is:
(1), production technology function admirable, surface quality is good, eccentric easy to control, yield rate is high.
(2), there is good all-position welding, in welding process, arc burning is steady, spreadability and fusion character are better, splash less, appearance of weld is careful attractive in appearance, de-slag is easy.
(3) coating has good moisture resistivity, resistance to bend(ing); Deposited metal is pure, and diffusible hydrogen is low.
(4), deposited metal after (730 ± 15 DEG C) × 2h heat treatment, toughness splendid (20 DEG C of Charpy-V impact power averages are more than 285J), intensity coordinates better with 12Cr1MoV steel plate.
[detailed description of the invention]
Can explain in more detail the present invention by the following examples, the present invention is not limited to the following examples;
A kind of high-ductility alloy series heat-resistant steel welding rod of the present invention, comprises core wire and coating, and described core wire is H08E wire rod, on the outer edge surface of described core wire, is provided with coating, and the composition of described coating comprises following composition by weight percentage:
Waterglass 17～23%; Marble 28～40%;
Fluorite 10～19%; Zircon sand 3～8%;
Silicon powder 1～3%; Fused magnesite 2～4%;
Ferrotianium 1～3%; Mid-carbon fe-mn 3～6%;
Atomization ferrosilicon 3～7%; Dehydration mica 2～4%;
Soda ash 0.5～1.5%; Rare earth silicon and magnesium ferroalloy 0.2～1%;
Crome metal 2.5～3%; Metal molybdenum 1～1.5%;
Vanadium iron 0.6～1.2%.
Wherein said waterglass is pure sodium silicate.
In coating of the present invention, the composition range of each component sees the following form:
The chemical composition requirement of main raw material(s)
| Raw material title | Granularity (order) | Chemical composition (wt.%) |
| H08E core wire | - | C≤0.01，Mn 0.35~0.55，Si≤0.03，S≤0.005，P≤0.005 |
| Waterglass | - | Na 2O≥8.2，SiO 2≥26.0，S≤0. 01，P≤0.01 |
| Marble | 60 | CaCO 3≥98.0，S≤0.01，P≤0.006 |
| Fluorite | 60 | CaF 2≥95.0，SiO 2≤1.0，S≤0.01，P≤0.008 |
| Zircon sand | 60 | ZrO 2 58~69.9，SiO 2 30~37，S≤0.02，P≤0.01 |
| Silicon powder | 200 | SiO 2≥97.0，S≤0.01，P≤0.01 |
| Fused magnesite | 60 | MgO≥99.0，S≤0.01，P≤0.01 |
| Ferrotianium | 40 | Ti 25~35，C≤0.15，S≤0.03，P≤0.03，Al≤8.0，Si≤4.5 |
| Mid-carbon fe-mn | 40 | C≤0.40，Mn 80.0~87.0，S≤0.020，P≤0.01 |
| Atomization ferrosilicon | 100 | Si 43.0~47.0，C≤0.020，S≤0.010，P≤0.01 |
| Dehydration mica | 60 | SiO 2? 48~56，Al 2O 3 20~35，K 2O+Na 2O 7~11，S≤0.02，P≤0.01 |
| Soda ash | 40 | Na 2CO 3≥98.0 |
| Rare earth silicon and magnesium ferroalloy | 40 | RE 17.0~20.0，Mg7.0~10.0，Mn≤4.0，Si≤42.0，Ca≤3.0，Ti≤2.0 |
| Crome metal | 40 | Cr≥99.0，C≤0.020，S≤0.015，P≤0.007 |
| Metal molybdenum | 100 | Mo≥99.0，Si≤0.003，S≤0.010，P≤0.005 |
| Vanadium iron | 40 | V≥40.0，C≤0.75，Si<2.0，S≤0.06，P≤0. 01 |
Specific embodiments of the invention are as shown in the table:
Embodiment composition proportion (wt.%)
| Numbering | Embodiment 1 | Embodiment 2 | Embodiment 3 |
| Marble | 33% | 36% | 39% |
| Fluorite | 18% | 16% | 14% |
| Zircon sand | 4% | 5% | 6% |
| Silicon powder | 2% | 1% | 1% |
| Fused magnesite | 3% | 3% | 3% |
| Mid-carbon fe-mn | 3% | 4% | 5% |
| Atomization ferrosilicon | 6% | 5% | 4% |
| Ferrotianium | 1% | 1.5% | 2% |
| Crome metal | 2.5% | 3% | 3% |
| Metal molybdenum | 1.5% | 1.5% | 1.5% |
| Vanadium iron | 0.9% | 1% | 1.1% |
| Dehydration mica | 4% | 3% | 2% |
| Soda ash | 0.5% | 1% | 1% |
| Rare earth silicon and magnesium ferroalloy | 0.6% | 0.5% | 0.4% |
| Waterglass | 20% | 18.5% | 17% |
In the present invention, deposited metal composition is as shown in the table:
Embodiment deposited metal composition (wt.%)
| ? | C | Mn | Si | S | P | Cr | Mo | V |
| Required value | 0.05-0.12 | ≤0.90 | ≤0.60 | ≤0.035 | ≤0.035 | 0.8-1.5 | 0.40-0.65 | 0.10-0.35 |
| Embodiment 1 | 0.07 | 0.61 | 0.42 | 0.003 | 0.007 | 1.0 | 0.50 | 0.12 |
| Embodiment 2 | 0.07 | 0.67 | 0.37 | 0.005 | 0.008 | 1.1 | 0.52 | 0.15 |
| Embodiment 3 | 0.08 | 0.72 | 0.33 | 0.005 | 0.007 | 1.1 | 0.56 | 0.19 |
The Performance Ratio of three kinds of embodiment of the present invention is more as shown in the table:
Embodiment deposited metal mechanical property (730 DEG C × 2h heat treatment)
| ? | R p0.2 (MPa) | R m (MPa) | A（%） | A kv? J (20℃) |
| Required value | ≥460 | ≥550 | ≥15 | - |
| Embodiment 1 | 506 | 608 | 26.7 | 299 |
| Embodiment 2 | 521 | 635 | 26.0 | 299 |
| Embodiment 3 | 542 | 663 | 25.2 | 286 |
In sum, welding rod welding procedure proposed by the invention is good, and weld metal composition and mechanical property meet the requirement of GB/T5118-2012 E5515-1CMV and NB/T47018.2-2011 standard.
Part not in the detailed description of the invention is prior art.
The embodiment selecting in this article for open object of the present invention, currently thinks suitablely, still, will be appreciated that, the present invention is intended to comprise that all belong to all changes and the improvement of the embodiment in this design and invention scope.
Claims (2)
1. a high-ductility alloy series heat-resistant steel welding rod, comprises core wire and coating, it is characterized in that: described core wire is H08E wire rod, on the outer edge surface of described core wire, is provided with coating, and the composition of described coating comprises following composition by weight percentage:
Waterglass 17～23%;
Marble 28～40%;
Fluorite 10～19%;
Zircon sand 3～8%;
Silicon powder 1～3%;
Fused magnesite 2～4%;
Ferrotianium 1～3%;
Mid-carbon fe-mn 3～6%;
Atomization ferrosilicon 3～7%;
Dehydration mica 2～4%;
Soda ash 0.5～1.5%;
Rare earth silicon and magnesium ferroalloy 0.2～1%;
Crome metal 2.5～3%;
Metal molybdenum 1～1.5%;
Vanadium iron 0.6～1.2%.
2. high-ductility alloy series heat-resistant steel welding rod according to claim 1, is characterized in that: described waterglass is pure sodium silicate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410236776.3A CN104014949A (en) | 2014-05-30 | 2014-05-30 | High-toughness alloy system heat-resistant steel electrode |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410236776.3A CN104014949A (en) | 2014-05-30 | 2014-05-30 | High-toughness alloy system heat-resistant steel electrode |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104014949A true CN104014949A (en) | 2014-09-03 |
Family
ID=51432103
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410236776.3A Pending CN104014949A (en) | 2014-05-30 | 2014-05-30 | High-toughness alloy system heat-resistant steel electrode |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104014949A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105562957A (en) * | 2014-10-15 | 2016-05-11 | 海宁瑞奥金属科技有限公司 | Ultra-high-strength and ultra-low-hydrogen electrode and weld metal |
| CN108311809A (en) * | 2017-12-22 | 2018-07-24 | 洛阳双瑞特种合金材料有限公司 | A kind of electrode coating, the welding rod with low-crackle sensitive and its preparation and application |
| CN109175777A (en) * | 2018-10-23 | 2019-01-11 | 郑州大学 | A kind of mating flux-cored wire of 550MPa grade low-temp steel |
| CN112935619A (en) * | 2020-12-01 | 2021-06-11 | 四川大西洋焊接材料股份有限公司 | Matched welding rod for welding martensitic steel serving at 630 ℃ for long time and preparation method thereof |
| CN113245748A (en) * | 2021-07-05 | 2021-08-13 | 四川西冶新材料股份有限公司 | 14Cr1MoR matched high-toughness welding electrode for hydrogen-contacting steel |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6235877B2 (en) * | 1982-03-24 | 1987-08-04 | Sumitomo Metal Ind | |
| CN1062684A (en) * | 1990-12-29 | 1992-07-15 | 上海锅炉厂 | The welding rod and the welding procedure thereof of heat-resisting steel no-preheating welding usefulness |
| JPH08108296A (en) * | 1994-10-06 | 1996-04-30 | Nippon Steel Weld Prod & Eng Co Ltd | Flux cored wire for welding cr-mo low-alloy heat resistant steel |
| CN101342650A (en) * | 2008-08-21 | 2009-01-14 | 中国船舶重工集团公司第七二五研究所 | Normalization anneal treatment resistant heat-resistant steel wire solder and use method thereof |
| CN103264234A (en) * | 2013-04-26 | 2013-08-28 | 中国船舶重工集团公司第七二五研究所 | Heat-resistant steel welding rod with low temperature impact toughness |
-
2014
- 2014-05-30 CN CN201410236776.3A patent/CN104014949A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6235877B2 (en) * | 1982-03-24 | 1987-08-04 | Sumitomo Metal Ind | |
| CN1062684A (en) * | 1990-12-29 | 1992-07-15 | 上海锅炉厂 | The welding rod and the welding procedure thereof of heat-resisting steel no-preheating welding usefulness |
| JPH08108296A (en) * | 1994-10-06 | 1996-04-30 | Nippon Steel Weld Prod & Eng Co Ltd | Flux cored wire for welding cr-mo low-alloy heat resistant steel |
| CN101342650A (en) * | 2008-08-21 | 2009-01-14 | 中国船舶重工集团公司第七二五研究所 | Normalization anneal treatment resistant heat-resistant steel wire solder and use method thereof |
| CN103264234A (en) * | 2013-04-26 | 2013-08-28 | 中国船舶重工集团公司第七二五研究所 | Heat-resistant steel welding rod with low temperature impact toughness |
Non-Patent Citations (1)
| Title |
|---|
| 李亚江: "《焊接材料的选用》", 31 March 2004, 化学工业出版社 * |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105562957A (en) * | 2014-10-15 | 2016-05-11 | 海宁瑞奥金属科技有限公司 | Ultra-high-strength and ultra-low-hydrogen electrode and weld metal |
| CN105562957B (en) * | 2014-10-15 | 2017-12-15 | 海宁瑞奥金属科技有限公司 | Superhigh intensity ultralow-hydrogen low welding rod and weld metal |
| CN108311809A (en) * | 2017-12-22 | 2018-07-24 | 洛阳双瑞特种合金材料有限公司 | A kind of electrode coating, the welding rod with low-crackle sensitive and its preparation and application |
| CN109175777A (en) * | 2018-10-23 | 2019-01-11 | 郑州大学 | A kind of mating flux-cored wire of 550MPa grade low-temp steel |
| CN112935619A (en) * | 2020-12-01 | 2021-06-11 | 四川大西洋焊接材料股份有限公司 | Matched welding rod for welding martensitic steel serving at 630 ℃ for long time and preparation method thereof |
| CN113245748A (en) * | 2021-07-05 | 2021-08-13 | 四川西冶新材料股份有限公司 | 14Cr1MoR matched high-toughness welding electrode for hydrogen-contacting steel |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101342650B (en) | Normalizing annealing treatment heat-resistant steel wire solder, production and use method thereof | |
| CN104014949A (en) | High-toughness alloy system heat-resistant steel electrode | |
| CN101362258B (en) | Novel electric welding rod | |
| CN101618486B (en) | Titania-type flux-cored welding wire and preparation method thereof | |
| CN103934594B (en) | A kind of chrome molybdenum heat resisting steel ultralow-hydrogen low bonded flux and preparation method | |
| CN102161137B (en) | Flux-cored wire, preparation and application thereof | |
| JP2016508877A (en) | Ultra-high strength flux cored arc welded joint with excellent impact toughness and welding wire for producing the same | |
| CN101733580A (en) | 800MPa-grade high-strength high-tenacity gas shielded welding wire | |
| CN103071946A (en) | Supercritical ferrite and heat-resistant steel matched electrode and production method thereof | |
| CN102554519A (en) | Flux-cored wire for master cable energy forced shaping, and preparation and application method thereof | |
| CN106141500B (en) | A kind of seamless submerged arc flux-cored wire of yield strength 690MPa grades of steel ultralow-hydrogen lows | |
| CN107081508B (en) | Thickness connects method in the double wire hidden arc welding of the ultrafast cold X70 steel of high-performance of 15-20mm | |
| CN104741816A (en) | Flux-cored welding wire for X120 pipeline steel welding and manufacturing method thereof | |
| CN104999195A (en) | High-toughness and self-protection flux-cored wire for steel structure welding | |
| CN103862201A (en) | Welding electrode for Ni steel welding | |
| CN103264234B (en) | A kind of heat resistant steel electrode with low-temperature impact toughness | |
| JP2011212691A (en) | Flux-cored welding wire for small diameter multi-electrode submerged arc welding | |
| CN103084758B (en) | Titanium-calcium welding rod | |
| CN104741823A (en) | Self-shielded welding wire for 0Cr13Ni5Mo stainless steel and preparation method of self-shielded welding wire | |
| CN103878506B (en) | A kind of low-intensity high-tenacity heat-resistant steel electrode | |
| CN103753055B (en) | A kind of mild-carbon steel strip preparation is containing the seamless pipe welding wire processing method of rutile medicine core powder | |
| CN106891104A (en) | A kind of ultralow-hydrogen low high-toughness metal powder core type seamless flux-cored wire of all-position welding | |
| CN101181768A (en) | Ultra-low hydrogen basic electrode for P92 steel welding | |
| CN104789856A (en) | Low-cost SM490C hot-rolling H section steel and preparation method thereof | |
| CN104209662A (en) | Anti-crack wear-resistant overlaying welding flux-cored wire and preparing method of anti-crack wear-resistant overlaying welding flux-cored wire |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| AD01 | Patent right deemed abandoned | ||
| AD01 | Patent right deemed abandoned |
Effective date of abandoning: 20170111 |