CN108788515B - Seamless flux-cored powder for welding LPG ship, submerged arc welding wire, preparation and application - Google Patents
Seamless flux-cored powder for welding LPG ship, submerged arc welding wire, preparation and application Download PDFInfo
- Publication number
- CN108788515B CN108788515B CN201810386851.2A CN201810386851A CN108788515B CN 108788515 B CN108788515 B CN 108788515B CN 201810386851 A CN201810386851 A CN 201810386851A CN 108788515 B CN108788515 B CN 108788515B
- Authority
- CN
- China
- Prior art keywords
- welding
- submerged arc
- equal
- lpg ship
- welding wire
- 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.)
- Active
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
- B23K35/24—Selection of soldering or welding materials proper
- B23K35/30—Selection of soldering or welding materials proper with the principal constituent melting at less than 1550 degrees C
- B23K35/3053—Fe as the principal constituent
- B23K35/308—Fe as the principal constituent with Cr as next major constituent
- B23K35/3086—Fe as the principal constituent with Cr as next major constituent containing Ni or Mn
-
- 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
- B23K35/40—Making wire or rods for soldering or welding
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Arc Welding In General (AREA)
- Nonmetallic Welding Materials (AREA)
Abstract
The invention belongs to the technical field of welding materials, and particularly relates to seamless flux-cored powder for welding an LPG ship, a submerged arc welding wire, and preparation and application of the seamless flux-cored powder. The seamless flux-cored powder for welding the LPG ship comprises the following components in percentage by mass: 1.2-4.5% of metallic nickel, 0.3-1.8% of ferromolybdenum, 14-20% of metallic manganese, 1-3% of rare earth ferrosilicon, 0.5-2% of ferrotitanium, 0.2-0.6% of ferroboron, 0.2-0.6% of ferrozirconium and the balance of metallic iron; the invention also provides a submerged arc welding wire containing the flux core powder, the welding wire is matched and combined with F7A (P)8 welding flux which accords with ASME II SFA-5.17, and the submerged arc welding wire has the characteristics of good moisture absorption resistance, stable electric arc, attractive welding line forming appearance and the like, has better manufacturability, good low-temperature toughness and good crack resistance sensitivity of welding line metal, is suitable for large-line energy welding for LPG ship construction, and has larger market popularization prospect and good economic benefit.
Description
Technical Field
The invention belongs to the technical field of welding materials, and particularly relates to seamless flux-cored powder for welding an LPG ship, a submerged arc welding wire, and preparation and application of the seamless flux-cored powder.
Background
With the rapid development of our country's economy, the development of LPG (liquefied petroleum gas) has become a hot spot in our country's energy development. With the shortage of petroleum resources in China and the increase of national environmental protection, the liquefied petroleum gas is more and more regarded as clean energy, and in recent years, the liquefied petroleum gas project is vigorously developed, and the construction project of the LPG ship is gradually increased. The demand of welding materials matched with welding forming in the construction of the LPG ship is gradually increased, and particularly submerged arc welding materials are imported from Korea, Japan and other countries at present, so that the purchase cost is high, the purchase period is long, and the implementation of domestic LPG projects is limited to a certain extent. For the welding material for LPG ship construction, relevant domestic research starts late, some experiences are accumulated at present, but further improvement is needed.
So far, there are not many related patents that are applicable to welding that requires low-temperature impact toughness and can be welded by high heat input, and the following are searched:
(1) the invention discloses a seamless submerged arc flux-cored wire (application number: 201610653026.5) for steel with yield strength of 550MPa, which is suitable for welding 550 MPa-grade high-strength steel with yield strength of more than 550MPa and tensile strength of more than 670MPa, and has different application ranges and deposited metal properties from those described in the invention.
(2) The invention discloses a seamless submerged arc flux-cored wire (application number: 201610653022.7) for 690MPa steel with yield strength, which is suitable for welding 690MPa high-strength steel with yield strength of more than 690MPa and tensile strength of more than 770MPa, and has the application range and deposited metal performance which are different from those described in the invention.
(3) The invention discloses a flux-cored wire and a welding wire (application number: 201410730460.X) for submerged-arc welding of low-temperature steel, and the application range and deposited metal performance of the flux-cored wire powder system are different from those described in the invention.
Disclosure of Invention
In order to overcome the defects and shortcomings of the prior art, the invention mainly aims to provide seamless flux-cored powder for LPG ship welding.
The invention also aims to provide a submerged arc welding wire which comprises the seamless flux-cored wire for LPG ship welding, the welding wire is a high-toughness seamless submerged arc flux-cored wire for FH40 steel for LPG ship welding, and a proper amount of austenite forming and stabilizing elements are introduced on the basis of a titanium-boron system design idea, so that the submerged arc welding wire has the characteristics of good moisture absorption resistance, stable electric arc, attractive weld forming appearance and the like, has good manufacturability, is good in low-temperature toughness and crack sensitivity of weld metal, is suitable for large-line energy welding for LPG ship construction, has lower cost than imported similar submerged arc welding wires, and has larger market popularization prospect and good economic benefit.
The invention also aims to provide a preparation method of the submerged arc welding wire.
The fourth purpose of the invention is to provide the application of the seamless flux-cored powder and the submerged arc welding wire for LPG ship welding.
The purpose of the invention is realized by the following technical scheme:
the seamless flux-cored powder for welding the LPG ship comprises the following components in percentage by mass:
1.2-4.5% of metallic nickel, 0.3-1.8% of ferromolybdenum, 14-20% of metallic manganese, 1-3% of rare earth ferrosilicon, 0.5-2% of ferrotitanium, 0.2-0.6% of ferroboron, 0.2-0.6% of ferrozirconium and the balance of metallic iron;
the balance also comprises inevitable impurities;
the mass percentage of the metal nickel is preferably 1.2-1.8%;
the granularity of the metal nickel is preferably less than or equal to 80 meshes, and the chemical components of the metal nickel are preferably more than or equal to 95.0wt% of Ni and Co, less than or equal to 0.05wt% of C, less than or equal to 0.005wt% of S and less than or equal to 0.005wt% of P;
the granularity of the metal manganese is preferably less than or equal to 80 meshes, and the chemical components of the metal manganese are preferably more than or equal to 97.0wt%, less than or equal to 0.40wt%, less than or equal to 2.0wt%, less than or equal to 0.02wt% and less than or equal to 0.03 wt%;
the granularity of the metal iron is preferably less than or equal to 80 meshes, and the chemical components of the metal iron are preferably more than or equal to 98.0wt% of Fe, less than or equal to 0.05wt% of C, less than or equal to 0.020wt% of S and less than or equal to 0.020wt% of P;
the granularity of the ferromolybdenum, the rare earth ferrosilicon, the ferrotitanium, the ferroboron and the ferrozirconium is preferably less than or equal to 80 meshes;
a submerged arc welding wire comprises the seamless flux-cored powder for LPG ship welding;
the mass of the seamless flux-cored powder for welding the LPG ship is preferably 9-15% of the total mass of the submerged arc welding wires;
the submerged arc welding wire also comprises a sheath;
the outer skin is preferably a low-carbon steel strip;
the preparation method of the submerged arc welding wire comprises the following steps:
(1) the seamless explosive core powder for LPG ship welding is prepared by mixing and evenly mixing all components to obtain the seamless explosive core powder for LPG ship welding;
(2) wrapping the outer skin with the seamless flux-cored powder for welding of the LPG ship prepared in the step (1), rolling (welding with a steel strip opening), and reducing to obtain a submerged arc welding wire;
the submerged arc welding wire can be further coiled, packaged and put in storage;
the diameter of the submerged arc welding wire is preferably 2.4mm, 3.2mm, 4.0mm or 5.0 mm;
the seamless flux-cored powder and the submerged arc welding wire for LPG ship welding are applied to the field of LPG ship welding;
the principle of the invention is as follows:
the primary purpose of metallic nickel is to improve the low temperature toughness of the weld metal, and secondly to improve the tensile strength. The nickel as an alloy element has the functions of strengthening and toughening the matrix of the alloy.
The ferromolybdenum mainly has the functions of improving the tensile strength of the weld metal and reducing the temper brittleness of the weld metal.
The manganese metal mainly plays a role in deoxidation and simultaneously improves the tensile strength of weld metal. If the addition amount is too small, the deoxidation is insufficient, pores are easy to generate, but if the content of the manganese metal is too high, the plasticity and the toughness of the welding line are obviously reduced.
The rare earth ferrosilicon is mainly used for deoxidation, and forms Si and Mn combined deoxidation with metal manganese, so that most deoxidation products enter molten slag. Meanwhile, the rare earth elements refine the size of residual inclusions in weld metal, so that the purpose of modifying the inclusions is achieved, and the structure refinement is promoted.
The main purposes of ferrotitanium are to deoxidize and improve the chemical components of inclusions, and the inclusions containing Ti are easy to nucleate acicular ferrite and improve the low-temperature toughness. In addition, titanium oxide is considered to form a strong hydrogen trap and to solidify a large amount of hydrogen, thereby effectively reducing the amount of diffusible hydrogen in the deposited metal.
The B in ferroboron and the Ti in the welding seam act jointly, and the effect of toughening the welding seam metal can be achieved. The ratio of Ti to B in the weld, Ti/B, is preferably controlled to be 2.5-4.
Besides the partial deoxidation effect of the zirconium iron, the zirconium element also plays a role in promoting the formation of acicular ferrite and the spheroidization of slag inclusion, thereby ensuring the low-temperature impact toughness of the weld metal.
By controlling the proportion of various components in the welding wire, the submerged arc welding wire has the following characteristics:
(1) in the aspect of raw material selection, raw materials with low content of impurity elements such as P, S and the like are selected as much as possible to reduce the transition from S, P to deposited metal, improve the purity of the deposited metal and be beneficial to improving the low-temperature toughness of the deposited metal.
(2) The welding wire contains ferrotitanium, ferroboron and ferrozirconium with adaptive proportion, and can refine weld metal grains, obtain more acicular ferrite tissues and ensure stable low-temperature impact toughness of the weld under the condition of different linear energy welding.
(3) The welding wire contains a certain amount of rare earth ferrosilicon. On one hand, the rare earth ferrosilicon can improve the slag removal performance, and on the other hand, the rare earth ferrosilicon can play a role in refining grains, stabilizing acicular ferrite in weld metal and improving the low-temperature toughness of the weld metal.
(4) The welding wire contains high manganese metal, so that a good deoxidation effect can be achieved.
(5) A certain amount of ferromolybdenum is added into the welding wire, so that the tempering brittleness of deposited metal can be reduced.
(6) The welding wire contains a proper amount of metallic nickel which is an austenite forming and stabilizing element and is beneficial to improving the low-temperature toughness of deposited metal.
Compared with the prior art, the invention has the following advantages and effects:
(1) the manufacturability is good, under the wider process specification, the electric arc is stable, the slag is easy to remove, and the welding bead is beautiful.
(2) The welding wire provided by the invention is a seamless flux-cored welding wire, has strong moisture absorption resistance, and is beneficial to reducing the content of diffusible hydrogen in weld metal.
(3) Matched with F7A (P)8 welding flux which accords with ASME II SFA-5.17, deposited metal components are stable, the yield strength is more than 390MPa, the tensile strength is more than 510MPa, the elongation is more than 23 percent, the Charpy impact energy at 60 ℃ below zero is more than 100J (the lateral expansion is more than 0.5), the Charpy impact energy at 75 ℃ is more than 60J (the lateral expansion is more than 0.5); the deposited metal has stable and excellent low-temperature toughness and is suitable for large heat input welding of large and thick plates.
(4) The base metal is FH40 base metal for LPG ship construction, and can be suitable for flat position welding with line energy of 15-50 KJ/cm.
(5) The welding wire is matched with a welding wire with a small diameter (less than or equal to 3.2mm), and is suitable for welding at submerged arc flat welding and transverse welding positions, the fusion between welding passes at the transverse welding positions is good, and the welding seam is well formed.
(6) Compared with a solid welding wire of the same chemical component system, the flux is matched with an F7A (P)8 flux which conforms to ASME II SFA-5.17, and the deposition efficiency is 3-9%.
(7) The chemical components of the deposited metal can be flexibly adjusted within a certain range, and the method is more environment-friendly than solid welding wire production and has low cost.
Detailed Description
The present invention will be described in further detail with reference to examples, but the embodiments of the present invention are not limited thereto.
Example 1
The seamless flux-cored powder for welding the LPG ship comprises the following components in percentage by mass:
a preparation method of a submerged arc welding wire comprises the following steps:
(1) the seamless explosive core powder for LPG ship welding is prepared by mixing and evenly mixing all components to obtain the seamless explosive core powder for LPG ship welding;
(2) and (2) wrapping the outer-skin low-carbon steel strip with the seamless flux-cored powder for welding of the LPG ship, which is prepared in the step (1), by rolling (steel strip opening-containing welding), reducing to obtain the submerged arc welding wire, wherein the mass of the seamless flux-cored powder for welding of the LPG ship is 12% of the total mass of the submerged arc welding wire.
(3) And (3) further coiling, packaging and warehousing the submerged arc welding wire prepared in the step (2).
Example 2
The seamless flux-cored powder for welding the LPG ship comprises the following components in percentage by mass:
a preparation method of a submerged arc welding wire comprises the following steps:
(1) the seamless explosive core powder for LPG ship welding is prepared by mixing and evenly mixing all components to obtain the seamless explosive core powder for LPG ship welding;
(2) and (2) wrapping the outer-skin low-carbon steel strip with the seamless flux-cored powder for welding of the LPG ship, which is prepared in the step (1), by rolling (steel strip opening-containing welding), reducing to obtain the submerged arc welding wire, wherein the mass of the seamless flux-cored powder for welding of the LPG ship is 15% of the total mass of the submerged arc welding wire.
(3) And (3) further coiling, packaging and warehousing the submerged arc welding wire prepared in the step (2).
Example 3
The seamless flux-cored powder for welding the LPG ship comprises the following components in percentage by mass:
a preparation method of a submerged arc welding wire comprises the following steps:
(1) the seamless explosive core powder for LPG ship welding is prepared by mixing and evenly mixing all components to obtain the seamless explosive core powder for LPG ship welding;
(2) and (2) wrapping the outer-skin low-carbon steel strip with the seamless flux-cored powder for welding of the LPG ship, which is prepared in the step (1), by rolling (steel strip opening-containing welding), reducing to obtain the submerged arc welding wire, wherein the mass of the seamless flux-cored powder for welding of the LPG ship is 9% of the total mass of the submerged arc welding wire.
(3) And (3) further coiling, packaging and warehousing the submerged arc welding wire prepared in the step (2).
Comparative examples
A seamless medicine core powder comprises the following components in percentage by mass:
a preparation method of a submerged arc welding wire comprises the following steps:
(1) mixing the components of the seamless medicinal core powder and uniformly mixing to obtain seamless medicinal core powder;
(2) and (2) wrapping the seamless flux-cored powder prepared in the step (1) by the outer-skin low-carbon steel strip, rolling (welding the steel strip-containing opening), and reducing to obtain the submerged arc welding wire, wherein the mass of the seamless flux-cored powder is 9-15% of the total mass of the submerged arc welding wire.
(3) And (3) further coiling, packaging and warehousing the submerged arc welding wire prepared in the step (2).
Effects of the embodiment
The chemical compositions of the components of the submerged arc welding wires obtained in examples 1 to 3 and comparative example are shown in table 1, and all the components are commercially available.
TABLE 1 chemical composition requirements of the main raw materials
| Name of raw material | Particle size (mesh) | Chemical composition (wt%) |
| Iron powder | ≤80 | Fe≥98.0，C≤0.05，S≤0.020，P≤0.020 |
| Manganese metal | ≤80 | Mn≥97.0，Si≤0.40，Fe≤2.0，S≤0.02，P≤0.03 |
| Nickel powder | ≤80 | Ni+Co≥95.0，C≤0.05，S≤0.005，P≤0.005 |
| The rest components | ≤80 | S≤0.020，P≤0.020 |
The submerged arc welding wires (taking a phi 5.0mm welding wire as an example) prepared in the examples 1 to 3 and the comparative example are matched with F7A (P)8 flux (flux mark: SR-SJ603) for welding, and the welding process parameters are as follows: the welding power supply is in direct current reverse connection, the welding current is 600-650A, the welding voltage is 32-35V, the inter-lane temperature is 100-150 ℃, and the test results are shown in tables 2-4.
Table 2 example deposited metal chemistry (wt%)
| Examples | C | Si | Mn | Ti | B | Ni | S | P |
| Example 1 | 0.017 | 0.124 | 1.79 | 0.020 | 0.0020 | 0.43 | 0.0028 | 0.012 |
| Example 2 | 0.013 | 0.130 | 1.72 | 0.019 | 0.0018 | 0.51 | 0.0026 | 0.011 |
| Example 3 | 0.016 | 0.132 | 1.70 | 0.020 | 0.0019 | 0.56 | 0.0028 | 0.011 |
| Comparative example | 0.018 | 0.276 | 1.83 | 0.021 | 0.0020 | 1.15 | 0.0027 | 0.010 |
TABLE 3 mechanical Properties of the weld wire deposited metals of the examples
| Examples | Rp0.2/MPa | Rm/MPa | A/％ | Akv/J(-60℃) | Akv/J(-75℃) |
| Example 1 | 545 | 675 | 28.5 | 123、136、109 | 108、96、97 |
| Example 2 | 536 | 653 | 26.5 | 131、121、143 | 105、94、91 |
| Example 3 | 523 | 619 | 26.0 | 157、143、120 | 99、83、94 |
| Comparative example | 576 | 703 | 25.4 | 127、93、110 | 38、73、41 |
TABLE 4 deposited metal of the invention examples diffused hydrogen (ml/100g)
| Example 1 | 2.67 |
| Example 2 | 3.13 |
| Example 3 | 3.35 |
| Comparative examples | 3.20 |
The welding wire provided by the invention has excellent processing performance and low diffusible hydrogen, is matched with F7A (P)8 welding flux which accords with ASME II SFA-5.17, and can meet the welding of FH40 steel with different line energies under the low-temperature condition.
The above embodiments are preferred embodiments of the present invention, but the present invention is not limited to the above embodiments, and any other changes, modifications, substitutions, combinations, and simplifications which do not depart from the spirit and principle of the present invention should be construed as equivalents thereof, and all such changes, modifications, substitutions, combinations, and simplifications are intended to be included in the scope of the present invention.
Claims (11)
1. The seamless flux-cored powder for welding the LPG ship is characterized by comprising the following components in percentage by mass:
1.2-4.5% of metallic nickel, 0.3-1.8% of ferromolybdenum, 14-20% of metallic manganese, 1-3% of rare earth ferrosilicon, 0.5-2% of ferrotitanium, 0.2-0.6% of ferroboron, 0.2-0.6% of ferrozirconium and the balance of metallic iron.
2. The seamless flux-cored powder for LPG ship welding as claimed in claim 1, wherein:
the mass percentage of the metallic nickel is 1.2-1.8%.
3. The seamless flux-cored powder for LPG ship welding as claimed in claim 1 or 2, wherein:
the granularity of the metallic nickel is less than or equal to 80 meshes, and the chemical components of the metallic nickel are more than or equal to 95.0wt% of Ni and Co, less than or equal to 0.05wt% of C, less than or equal to 0.005wt% of S and less than or equal to 0.005wt% of P.
4. The seamless flux-cored powder for LPG ship welding as claimed in claim 1 or 2, wherein:
the granularity of the metal manganese is less than or equal to 80 meshes, and the chemical components of the metal manganese are more than or equal to 97.0wt%, less than or equal to 0.40wt%, less than or equal to 2.0wt%, less than or equal to 0.02wt% and less than or equal to 0.03 wt%.
5. The seamless flux-cored powder for LPG ship welding as claimed in claim 1 or 2, wherein:
the granularity of the metallic iron is less than or equal to 80 meshes, and the chemical components of the metallic iron are more than or equal to 98.0wt% of Fe, less than or equal to 0.05wt% of C, less than or equal to 0.020wt% of S and less than or equal to 0.020wt% of P.
6. The use of the seamless flux-cored powder for LPG ship welding as claimed in any one of claims 1 to 5 in the field of LPG ship welding.
7. A submerged arc welding wire characterized by comprising the seamless flux core powder for LPG ship welding according to any one of claims 1 to 5.
8. The submerged arc welding wire of claim 7, characterized in that:
the mass of the seamless flux-cored powder for welding the LPG ship is 9-15% of the total mass of the submerged arc welding wires.
9. Use of a submerged arc welding wire according to claim 7 or 8 in the field of LPG ship welding.
10. The process for the preparation of a submerged arc welding wire according to claim 7 or 8, characterized by comprising the steps of:
(1) the seamless explosive core powder for LPG ship welding is prepared by mixing and evenly mixing all components to obtain the seamless explosive core powder for LPG ship welding;
(2) and (3) wrapping the outer skin with the seamless flux-cored powder for welding of the LPG ship prepared in the step (1), and rolling and reducing to obtain the submerged arc welding wire.
11. The method of manufacturing a submerged arc welding wire according to claim 10, characterized in that:
the diameter of the submerged arc welding wire is 2.4mm, 3.2mm, 4.0mm or 5.0 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810386851.2A CN108788515B (en) | 2018-04-26 | 2018-04-26 | Seamless flux-cored powder for welding LPG ship, submerged arc welding wire, preparation and application |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810386851.2A CN108788515B (en) | 2018-04-26 | 2018-04-26 | Seamless flux-cored powder for welding LPG ship, submerged arc welding wire, preparation and application |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108788515A CN108788515A (en) | 2018-11-13 |
| CN108788515B true CN108788515B (en) | 2020-12-18 |
Family
ID=64093987
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810386851.2A Active CN108788515B (en) | 2018-04-26 | 2018-04-26 | Seamless flux-cored powder for welding LPG ship, submerged arc welding wire, preparation and application |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108788515B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110125572A (en) * | 2019-05-30 | 2019-08-16 | 洛阳双瑞特种合金材料有限公司 | It is a kind of can post weld heat treatment seamless submerged arc flux-cored wire |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101318267A (en) * | 2008-06-27 | 2008-12-10 | 武汉铁锚焊接材料股份有限公司 | Flux-cored wire for vertical electro-gas welding |
| CN101323057A (en) * | 2007-06-13 | 2008-12-17 | 中国船舶重工集团公司第七二五研究所 | High intensity metallic core type seamless flux-cored wire |
| EP2153932A1 (en) * | 2008-07-25 | 2010-02-17 | Nippon Steel & Sumikin Welding Co., Ltd. | Melt flux for submerged arc welding and method for submerged arc welding of steel for low temperature service |
| JP2011206828A (en) * | 2010-03-30 | 2011-10-20 | Jfe Steel Corp | Flux-cored welding wire for fine diameter wire multiple electrode submerged arc welding |
| EP1778432B1 (en) * | 2004-07-12 | 2012-02-22 | L'AIR LIQUIDE, Société Anonyme pour l'Etude et l'Exploitation des Procédés Georges Claude | Flux-cored, slag-free welding wire with high silicon content for the welding of ferritic stainless steels |
| CN102689106A (en) * | 2012-06-12 | 2012-09-26 | 中冶焊接科技有限公司 | Vertical electro-gas welding metal-cored flux-cored welding wire for petroleum storage tank |
| CN106181122A (en) * | 2016-08-10 | 2016-12-07 | 中国船舶重工集团公司第七二五研究所 | A kind of seamless submerged arc flux-cored wire for yield strength 550MPa steel |
| CN107378311A (en) * | 2017-08-21 | 2017-11-24 | 洛阳双瑞特种合金材料有限公司 | A kind of high tenacity for 460MPa steel is seamless submerged arc flux-cored wire |
-
2018
- 2018-04-26 CN CN201810386851.2A patent/CN108788515B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1778432B1 (en) * | 2004-07-12 | 2012-02-22 | L'AIR LIQUIDE, Société Anonyme pour l'Etude et l'Exploitation des Procédés Georges Claude | Flux-cored, slag-free welding wire with high silicon content for the welding of ferritic stainless steels |
| CN101323057A (en) * | 2007-06-13 | 2008-12-17 | 中国船舶重工集团公司第七二五研究所 | High intensity metallic core type seamless flux-cored wire |
| CN101318267A (en) * | 2008-06-27 | 2008-12-10 | 武汉铁锚焊接材料股份有限公司 | Flux-cored wire for vertical electro-gas welding |
| EP2153932A1 (en) * | 2008-07-25 | 2010-02-17 | Nippon Steel & Sumikin Welding Co., Ltd. | Melt flux for submerged arc welding and method for submerged arc welding of steel for low temperature service |
| JP2011206828A (en) * | 2010-03-30 | 2011-10-20 | Jfe Steel Corp | Flux-cored welding wire for fine diameter wire multiple electrode submerged arc welding |
| CN102689106A (en) * | 2012-06-12 | 2012-09-26 | 中冶焊接科技有限公司 | Vertical electro-gas welding metal-cored flux-cored welding wire for petroleum storage tank |
| CN106181122A (en) * | 2016-08-10 | 2016-12-07 | 中国船舶重工集团公司第七二五研究所 | A kind of seamless submerged arc flux-cored wire for yield strength 550MPa steel |
| CN107378311A (en) * | 2017-08-21 | 2017-11-24 | 洛阳双瑞特种合金材料有限公司 | A kind of high tenacity for 460MPa steel is seamless submerged arc flux-cored wire |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108788515A (en) | 2018-11-13 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101844282B (en) | Low-hydrogen coated electric arc welding bar | |
| CN110653515B (en) | Seamless submerged arc flux-cored wire for welding high manganese steel LNG storage tank | |
| CN102489902A (en) | Metal powder type flux-cored wire used for welding high-impact-toughness steel | |
| CN105710558B (en) | Low-temperature steel flux-cored wire used for submerged arc welding and solder flux | |
| CN103350289A (en) | Submerged-arc welding wire deposited metal with excellent low-temperature toughness and high strength | |
| CN102689106B (en) | Vertical electro-gas welding metal-cored flux-cored welding wire for petroleum storage tank | |
| CN102756219B (en) | A kind of welding wire, wire rod and its application | |
| CN107900556A (en) | A kind of austenitic stainless steel self-protection flux-cored wire | |
| CN101905390B (en) | Gas-protection welding wire with low alloy and high strength | |
| CN106078006A (en) | A kind of 550MPa high-strength steel ultralow-hydrogen low high tenacity seamless flux-cored wire | |
| CN100423880C (en) | Gas-shielded welding wire for welding high-strength steel | |
| CN101905393B (en) | Solid welding wire for high-toughness structural steel | |
| CN101633085B (en) | Stainless steel welding wire and technology for welding same | |
| CN106891104B (en) | A kind of ultralow-hydrogen low high-toughness metal powder core type seamless flux-cored wire of all-position welding | |
| CN111843291A (en) | High-strength corrosion-resistant low-nickel welding rod | |
| CN108788515B (en) | Seamless flux-cored powder for welding LPG ship, submerged arc welding wire, preparation and application | |
| CN101664863B (en) | Seawater corrosion resistant submerged arc welding wire | |
| CN103600178B (en) | A kind of high-strength weathering steel gas shield solid core welding wire | |
| CN109822258B (en) | Flux-cored wire for submerged-arc welding of low-temperature steel LPG ship | |
| CN109014653B (en) | High-strength gas shielded welding wire capable of eliminating stress | |
| CN1257039C (en) | High-strength welding electrode | |
| CN111660035B (en) | Tungsten electrode argon arc seamless flux-cored wire for ultralow-temperature high-manganese steel welding and preparation method thereof | |
| CN109759744B (en) | Welding wire powder, heat-treatable seamless flux-cored wire and application | |
| CN109175775B (en) | Flux-cored wire for welding weathering resistant steel Q550NH | |
| CN107984113A (en) | Multiplewire submerged arc welding flux-cored wire |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20210126 Address after: No. 169, Binhe South Road, Luolong District, Luoyang City, Henan Province Patentee after: NO.725 RESEARCH INSTITUTE OF CHINA SHIPBUILDING INDUSTRY Corp. Address before: 471000 No.20, Yanguang Road, high tech Development Zone, Luoyang City, Henan Province Patentee before: LUOYANG SHUANGRUI SPEICAL ALLOY MATERIAL Co.,Ltd. |
|
| TR01 | Transfer of patent right |