CN113305469A - Smelting flux for submerged-arc welding of austenitic welding wire and preparation method thereof - Google Patents
Smelting flux for submerged-arc welding of austenitic welding wire and preparation method thereof Download PDFInfo
- Publication number
- CN113305469A CN113305469A CN202110523824.7A CN202110523824A CN113305469A CN 113305469 A CN113305469 A CN 113305469A CN 202110523824 A CN202110523824 A CN 202110523824A CN 113305469 A CN113305469 A CN 113305469A
- Authority
- CN
- China
- Prior art keywords
- equal
- percent
- flux
- less
- welding
- 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.)
- Granted
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
- B23K35/3601—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 with inorganic compounds as principal constituents
- B23K35/3602—Carbonates, basic oxides or hydroxides
-
- 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
- B23K35/362—Selection of compositions of fluxes
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Nonmetallic Welding Materials (AREA)
Abstract
A smelting flux for submerged arc welding of an austenitic welding wire and a preparation method thereof are disclosed, wherein the smelting flux comprises marble, quartz, fluorite, potash feldspar, zirconium dioxide, magnesia, zircon sand, manganese ore and barium carbonate, and the specific preparation process comprises the steps of preparing raw materials; smelting; water-cooling and granulating; drying the granulated smelting flux at the temperature of 420-450 ℃; mechanically crushing and screening the flux, wherein the strength granularity of the finished flux is required to be 12-80 meshes; and (6) packaging and warehousing. The smelting flux for submerged arc welding of the austenite welding wire prepared by the invention develops a smelting flux which can be matched with various types of austenite submerged arc welding wires for welding, has good manufacturability, can be suitable for welding in a flat position and a transverse position, and has good low-temperature toughness of a welding line, good hot crack resistance sensitivity and lower cost through creating a slag system. Has wide market promotion prospect and good economic benefit.
Description
Technical Field
The invention belongs to the technical field of welding materials, and particularly relates to a smelting flux for submerged arc welding of an austenitic welding wire and a preparation method thereof.
Background
With the rapid development of economy, the progress of science and technology and the improvement of the requirement of people on environmental protection, the development and application of clean energy such as liquefied natural gas, liquefied petroleum gas and the like become the hot spots of energy development.
In recent years, LNG (liquefied natural gas) and LPG (liquefied petroleum gas) projects have been developed vigorously, and since many LNG and LPG projects have been planned, 9Ni steel, EH40 steel, and the like are considered as excellent materials for manufacturing low-temperature pressure vessels due to their excellent low-temperature toughness and good weldability, high manganese steel is expected to be used in LNG projects in the near future.
For the welding of steel used in ultralow temperature service environment, related domestic research currently accumulates some experiences, but further improvement is needed due to late start. The matched welding materials for welding the steel contain more austenite welding materials, in particular to austenite submerged arc welding materials, such as ERNiCrMo-3, ERNiCrMo-4 and the like. The welding materials are imported at present, and no mature products exist in China although relevant researches are carried out by the departments of Harpago institute, Jingqun, Antai science and technology and the like.
Disclosure of Invention
In order to solve the problems, the invention provides a smelting flux for submerged-arc welding of an austenitic welding wire and a preparation method thereof, solves the problems of poor slag detachability, poor spreading wettability of a welding bead, easy generation of air holes in the welding bead and the like in the welding process of the austenitic welding wire, and is suitable for various types of submerged-arc welding of the austenitic welding wire.
In order to achieve the purpose, the invention adopts the technical scheme that:
a smelting flux for submerged arc welding of an austenitic welding wire is characterized in that: the raw materials comprise the following components in parts by weight: 40-55 parts of marble, 15-22 parts of quartz, 9-13 parts of fluorite, 7-9 parts of potassium feldspar, 3.5-4.5 parts of zirconium dioxide, 3.5-5 parts of magnesia, 3-7 parts of zircon sand, 1-2.3 parts of barium carbonate and 0.5-2 parts of manganese ore.
Furthermore, the granularity of the zirconium dioxide, the magnesia, the zircon sand and the barium carbonate is less than or equal to 40 meshes.
Furthermore, S in the marble, the quartz, the fluorite, the zirconium dioxide, the magnesia, the manganese ore and the barium carbonate is less than or equal to 0.080, and P is less than or equal to 0.040.
Further, the marble comprises CaCO according to mass percentage3More than or equal to 95.0 percent, less than or equal to 0.010 percent of S and less than or equal to 0.010 percent of P; the quartz comprises SiO2More than or equal to 93.0 percent, less than or equal to 0.035 percent of S and less than or equal to 0.010 percent of P; fluorite including CaF2≥95.0%，SiO2Less than or equal to 1.00 percent, less than or equal to 0.010 percent of S and less than or equal to 0.010 percent of P; the potassium feldspar comprises SiO2>60%，Al2O3≥15%，K2O>8%，K2O+Na2O>12 percent; zirconium dioxide including ZrO2More than or equal to 92.0 percent, less than or equal to 0.010 percent of S and less than or equal to 0.010 percent of P; the magnesite comprises more than or equal to 98.0 percent of MgO, less than or equal to 0.45 percent of Si, less than or equal to 0.050 percent of S and less than or equal to 0.040 percent of P; zircon sand comprising ZrO2≥63.0%，SiO2More than or equal to 25.0 percent, manganese ore comprises more than or equal to 55 percent of Mn, less than or equal to 0.10 percent of Fe, less than or equal to 0.035 percent of S and less than or equal to 0.025 percent of P; barium carbonate includes BaCO3≥51%，S≤0.080%，P≤0.030%。
A preparation method of a smelting flux for submerged-arc welding of an austenitic welding wire is characterized by comprising the following steps: the method comprises the following specific steps:
step one, preparing raw materials of a smelting flux according to a mixture ratio range;
step two, smelting the raw materials prepared in the step one, adding marble, quartz, fluorite, potash feldspar, zirconium dioxide, magnesia and zircon sand when smelting, adding manganese ore after the materials are melted, and finally adding barium carbonate after the materials are uniformly melted;
step three, discharging the molten materials from the furnace for water cooling granulation after the molten materials in the step two are uniform and stable in color;
drying the granulated material obtained in the step three at the temperature of 420-450 ℃;
and step five, mechanically crushing and screening the dried granulated material to obtain the smelting flux.
Further, in the fourth step, the water content of the dried granulated material is less than or equal to 0.05%.
Further, in the fifth step, the screening mesh number is 12-80 meshes.
Furthermore, the yield of the melting flux is more than or equal to 72%, the yield strength matched with the welding wire is more than 430MPa, the tensile strength is more than 690MPa, the elongation is more than 35%, the Charpy impact work at minus 196 ℃ is more than 100J, and the lateral expansion is more than 0.9.
The invention comprises marble, quartz, fluorite, potash feldspar, zirconium dioxide, magnesia, zircon sand, manganese ore and barium carbonate. Wherein the high-temperature decomposition product of marble is mainly CO2And CaO, wherein CO2The process of overflowing in a gas form has a certain stirring effect, and the uniformity of the whole components of the melting flux is promoted. CaO is a strongly basic oxide, mainly slagThe components can adjust the alkalinity of the slag, effectively improve the large current resistance of the welding flux and improve the surface tension and the interfacial tension of the slag. The research result of the invention shows that the excessive CaO can reduce the fluidity of the slag and lead the spreadability of the welding seam to be poor; too low CaO causes a decrease in flux basicity, which can reduce the low temperature toughness of the weld metal.
The main component of quartz is SiO2Belongs to a slightly acidic substance, mainly has the functions of slagging, adjusting the viscosity and the fluidity of a liquid slag pool and is very important for forming a welding seam. The research result of the invention shows that SiO2When the addition amount is excessive, the silicon increase of the weld metal is serious, the weld metal strength is increased, and the low-temperature toughness of the weld metal is reduced, but SiO2Too low can result in poor weld formation.
The main component of fluorite is CaF2They belong to the group of basic oxides and, in the case of fluxes, to the group of slag formers and diluents. The fluorite in a molten state has good fluidity, can improve and adjust the viscosity, melting point and surface tension of the slag, improves the fluidity of the slag, and has certain promotion effect on the improvement of the spreadability of a welding bead.
Potash feldspar contains low ionization energy potassium, sodium element, mainly plays the effect of stabilizing the welding arc for the welding flux is adopting the minor dimension diameter welding wire (in 2.0mm, in 2.4 mm) horizontal position when welding, and the electric arc is more stable, and the welding seam shaping is good.
Zirconium dioxide is an acidic oxide with a negative linear expansion coefficient at high temperatures. The volume change is obvious in the cooling process, smooth peeling of slag shells is promoted, the viscosity of a slag pool can be adjusted by the zirconium dioxide, welding bead forming is improved, a certain amount of Zr can be transferred into weld metal, and low-temperature toughness of deposited metal is improved. The addition of pure zirconium dioxide leads to poor weld forming, and experiments show that partial ZrO2The addition of the zircon sand has a good effect on improving the weld forming.
The main component of the magnesite is MgO, a strong alkaline oxide, which can improve the impact toughness of the weld metal. Research results show that the content of the magnesite cannot exceed 5 parts, and excessive magnesite can increase the viscosity of the slag, increase the solidification temperature of the slag, reduce the fluidity of the slag and seriously affect the weld forming. However, the content of the magnesite is not less than 3.5 parts, and the excessively low magnesite can cause the over-low melting point of the welding flux to cause poor slag detachability, and can increase slag inclusion in the weld metal to cause the reduction of the low-temperature toughness of the weld metal.
Decomposition of barium carbonate into CO in high-temperature smelting process2And BaO, which is beneficial to the falling off of the slag shell in the welding process.
The manganese ore ensures the stability of the components of the manganese metal in the deposited metal and the strength of the weld metal mainly by keeping the concentration of the Mn element which forms stable in the slag to be matched with the concentration of the Mn element in the molten metal pool.
The invention has the beneficial effects that:
1. the smelting flux for submerged arc welding of the austenitic welding wire is prepared from raw materials with low impurity element content such as P, S and the like, so that the transition from S, P to deposited metal is reduced, the purity of the deposited metal is improved, and the low-temperature toughness of the deposited metal is improved; the welding flux which takes the alkaline oxide as the main raw material can effectively reduce the content of the nonmetallic inclusion of the weld metal and effectively improve the appearance of the inclusion; the zirconium dioxide in the raw materials can play a role in improving the slag detachability. Compared with the sintered flux, the smelting flux prepared from the raw materials has good moisture absorption resistance, solves the problems that the sintered flux is easy to generate air holes and has non-ideal slag detachability during welding, and is more suitable for the welding operation of field engineering;
2. the smelting flux prepared by the raw materials and the preparation method has good manufacturability, stable electric arc, easy slag removal and beautiful welding bead formation under the condition of wider process specification;
the flux has good production adaptability, uniform granularity, yield of more than 72 percent, stable deposited metal components, yield strength of more than 430MPa, tensile strength of more than 690MPa, elongation of more than 35 percent, charpy impact power of more than 100J (lateral expansion of more than 0.9) at minus 196 ℃, and better thermal crack resistance sensitivity of deposited metal when matched with the ERNiCrMo-4 welding wire;
3. the prepared smelting flux can also be suitable for the transverse position welding of welding wires with the diameters of 2.0mm and 2.4mm, the welding bead has good slag removal performance, the welding seam has no air holes, and the fusion between the welding beads is good. The welding wire is suitable for the flat position welding of welding wires with all specifications, the welding arc is stable, and the welding seam is excellent in forming.
Detailed Description
In order that those skilled in the art will be able to better understand the technical solutions provided by the present invention, the following description is provided in connection with specific embodiments.
Example 1
The invention provides a submerged arc welding flux which is a smelting welding flux and belongs to a high-calcium type smelting welding flux, wherein the welding flux comprises the following components in parts by weight:
and (3) marble: 49 parts, quartz: 15 parts of fluorite: 10 parts of potassium feldspar: 9 parts of zirconium dioxide: 4 parts of magnesia: 3.5 parts of zircon sand: 6 parts, barium carbonate: 2 parts of manganese ore: 1.5 parts.
The addition mode of each component of the welding flux is as follows: the magnesite is added in the form of light-burned magnesite.
The preparation process of the flux is as follows: (1) preparing the raw materials according to the proportion range; (2) smelting, during smelting, adding marble, quartz, fluorite, potash feldspar, zirconium dioxide, light-duty magnesite and zircon sand, adding manganese ore after the materials are basically melted, adding barium carbonate after a filter material is uniformly melted, and discharging the molten materials after the color of the molten materials is uniform and stable, and carrying out water cooling granulation; (3) water-cooling and granulating; (4) drying the granulated smelting flux at the temperature of 420-450 ℃ (the moisture content of the dried flux is not more than 0.05%); (5) mechanically crushing and screening the flux, wherein the strength granularity of the finished flux is required to be 12-80 meshes; (6) and (6) packaging and warehousing.
Example 2
The welding flux comprises the following components in parts by weight:
and (3) marble: 40.5 parts, quartz: 21 parts, fluorite: 13 parts of potassium feldspar: 8 parts of zirconium dioxide: 4.5 parts of magnesia: 5 parts of zircon sand: 4 parts, barium carbonate: 2.2 parts of manganese ore: 1.8 parts.
The preparation process of the flux is as follows: (1) preparing the raw materials according to the proportion range; (2) smelting; (3) water-cooling and granulating; (4) drying the granulated smelting flux at the temperature of 420-450 ℃ (the moisture content of the dried flux is not more than 0.05%); (5) mechanically crushing and screening the flux, wherein the strength granularity of the finished flux is required to be 12-80 meshes; (6) and (6) packaging and warehousing.
Example 3
The welding flux comprises the following components in parts by weight:
and (3) marble: 53 parts, quartz: 17 parts, fluorite: 9 parts of potassium feldspar: 7 parts of zirconium dioxide: 3.5 parts of magnesia: 4.5 parts of zircon sand: 4.5 parts, barium carbonate: 1 part of manganese ore: 0.5 part.
The preparation process of the flux is as follows: (1) preparing the raw materials according to the proportion range; (2) smelting; (3) water-cooling and granulating; (4) drying the granulated smelting flux at the temperature of 420-450 ℃ (the moisture content of the dried flux is not more than 0.05%); (5) mechanically crushing and screening the flux, wherein the strength granularity of the finished flux is required to be 12-80 meshes; (6) and (6) packaging and warehousing.
The fluxes prepared by the components of the above examples 1 to 3 were respectively tested, and the fluxes were baked at 220 to 280 ℃ for 2 hours before the welding test.
Matching with ERNiCrMo-4 submerged arc welding wires, taking a phi 2.4mm welding wire as an example, and the welding process parameters are as follows: the welding power supply is reversely connected in a direct current mode, the welding current is 320-350A, the welding voltage is 28-30V, the inter-road temperature is 100-150 ℃, the welding power supply is tested, the chemical components (wt%) of welding wire cladding metal matched with the welding flux ERNiCrMo-4 are shown in the table 1, and the mechanical properties of the welding wire cladding metal matched with the welding flux ERNiCrMo-4 are shown in the table 2.
After 3 parts of each 100 g of the example flux was placed in an environment of 80% relative humidity and 25 ℃ and allowed to absorb moisture for 12 hours, a 150 ℃ oven drying weight loss test was conducted, and the test results are shown in Table 3.
The invention develops a smelting type welding flux which can be matched with various types of austenite submerged arc welding wires for welding, has good manufacturability, can be suitable for flat and horizontal position welding, and has good low-temperature toughness of welding seams, good thermal crack resistance sensitivity and lower cost by innovating a slag system based on solving the problems of poor slag detachability, poor weld bead spreading wettability, easy generation of air holes in weld beads and the like in the welding process of austenite welding wires (particularly high-nickel welding wires). Has wide market promotion prospect and good economic benefit. The flux has excellent technological performance and good moisture absorption resistance. The technical problems of poor slag detachability, poor welding bead spreading, easy generation of air holes and the like in the submerged arc welding of the austenitic welding wire are solved. The welding flux is matched and welded with an ERNiCrMo-4 austenitic welding wire, and the mechanical property of the welding seam metal is good.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. The present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (8)
1. A smelting flux for submerged arc welding of an austenitic welding wire is characterized in that: the raw materials comprise the following components in parts by weight: 40-55 parts of marble, 15-22 parts of quartz, 9-13 parts of fluorite, 7-9 parts of potassium feldspar, 3.5-4.5 parts of zirconium dioxide, 3.5-5 parts of magnesia, 3-7 parts of zircon sand, 1-2.3 parts of barium carbonate and 0.5-2 parts of manganese ore.
2. The melting flux for submerged arc welding of an austenitic welding wire as set forth in claim 1, wherein: the granularity of the zirconium dioxide, the magnesia, the zircon sand and the barium carbonate is less than or equal to 40 meshes.
3. The melting flux for submerged arc welding of an austenitic welding wire as set forth in claim 1, wherein: s in marble, quartz, fluorite, zirconium dioxide, magnesia, manganese ore and barium carbonate is less than or equal to 0.080, and P is less than or equal to 0.040.
4. The melting flux for submerged arc welding of an austenitic welding wire as set forth in claim 3, wherein: the marble comprises CaCO in percentage by mass3More than or equal to 95.0 percent, less than or equal to 0.010 percent of S and less than or equal to 0.010 percent of P; the quartz comprises SiO2More than or equal to 93.0 percent, less than or equal to 0.035 percent of S and less than or equal to 0.010 percent of P; fluorite including CaF2≥95.0%，SiO2Less than or equal to 1.00 percent, less than or equal to 0.010 percent of S and less than or equal to 0.010 percent of P; the potassium feldspar comprises SiO2>60%，Al2O3≥15%，K2O>8%，K2O+Na2O>12 percent; zirconium dioxide including ZrO2More than or equal to 92.0 percent, less than or equal to 0.010 percent of S and less than or equal to 0.010 percent of P; the magnesite comprises more than or equal to 98.0 percent of MgO, less than or equal to 0.45 percent of Si, less than or equal to 0.050 percent of S and less than or equal to 0.040 percent of P; zircon sand comprising ZrO2≥63.0%，SiO2More than or equal to 25.0 percent, manganese ore comprises more than or equal to 55 percent of Mn, less than or equal to 0.10 percent of Fe, less than or equal to 0.035 percent of S and less than or equal to 0.025 percent of P; barium carbonate includes BaCO3≥51%，S≤0.080%，P≤0.030%。
5. The method for preparing the smelting flux for the submerged arc welding of the austenitic welding wire according to the claim 1, is characterized in that: the method comprises the following specific steps:
step one, preparing raw materials of a smelting flux according to a mixture ratio range;
step two, smelting the raw materials prepared in the step one, adding marble, quartz, fluorite, potash feldspar, zirconium dioxide, magnesia and zircon sand when smelting, adding manganese ore after the materials are melted, and finally adding barium carbonate after the materials are uniformly melted;
step three, discharging the molten materials from the furnace for water cooling granulation after the molten materials in the step two are uniform and stable in color;
drying the granulated material obtained in the step three at the temperature of 420-450 ℃;
and step five, mechanically crushing and screening the dried granulated material to obtain the smelting flux.
6. The method for preparing the smelting flux for the submerged arc welding of the austenitic welding wire according to the claim 5, is characterized in that: in the fourth step, the water content of the dried granulated material is less than or equal to 0.05 percent.
7. The method for preparing the smelting flux for the submerged arc welding of the austenitic welding wire according to the claim 5, is characterized in that: in the fifth step, the screening mesh number is 12-80 meshes.
8. The method for preparing the smelting flux for the submerged arc welding of the austenitic welding wire according to the claim 5, is characterized in that: the yield of the melting flux is more than or equal to 72%, the yield strength of the melting flux matched with the welding wire is more than 430MPa, the tensile strength is more than 690MPa, the elongation is more than 35%, the Charpy impact work at minus 196 ℃ is more than 100J, and the lateral expansion is more than 0.9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110523824.7A CN113305469B (en) | 2021-05-13 | 2021-05-13 | Smelting flux for submerged-arc welding of austenitic welding wire and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110523824.7A CN113305469B (en) | 2021-05-13 | 2021-05-13 | Smelting flux for submerged-arc welding of austenitic welding wire and preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113305469A true CN113305469A (en) | 2021-08-27 |
| CN113305469B CN113305469B (en) | 2022-11-08 |
Family
ID=77373204
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110523824.7A Active CN113305469B (en) | 2021-05-13 | 2021-05-13 | Smelting flux for submerged-arc welding of austenitic welding wire and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113305469B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113714684A (en) * | 2021-10-29 | 2021-11-30 | 东北大学 | Smelting flux for welding HSLA steel and preparation method thereof |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1040160A (en) * | 1988-08-12 | 1990-03-07 | 国家机械工业委员会哈尔滨焊接研究所36693 | A kind of high-basicity sintered flux |
| RO100289B1 (en) * | 1988-05-27 | 1990-11-30 | INSTITUTUL DE SUDURA SI îNCERCARI DE MATERIALE | Electrodes paste for build-up welding |
| CN1644300A (en) * | 2005-01-21 | 2005-07-27 | 中国船舶重工集团公司第七二五研究所 | Low alloy high-toughness electric welding rod containing copper |
| WO2008072835A1 (en) * | 2006-12-13 | 2008-06-19 | Kiswel Ltd. | Sintered flux for submerged arc welding |
| 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 |
| CN101733587A (en) * | 2010-01-20 | 2010-06-16 | 中国船舶重工集团公司第七二五研究所 | Stainless steel sintered flux |
| CN103030286A (en) * | 2012-12-05 | 2013-04-10 | 毛庆云 | Surface dense pore-free microcrystalline glass and preparation method thereof |
| CN103934594A (en) * | 2014-03-28 | 2014-07-23 | 中国船舶重工集团公司第七二五研究所 | Ultralow hydrogen ceramic welding flux for chrome molybdenum heat resistant steel and preparation method thereof |
| WO2018000562A1 (en) * | 2016-06-28 | 2018-01-04 | 美轲（广州）化学股份有限公司 | Compound zirconium silicate opacifying agent, preparation method therefor and application thereof |
| CN110102933A (en) * | 2019-04-19 | 2019-08-09 | 洛阳双瑞特种合金材料有限公司 | A kind of 9Ni steel welding fysed flux and preparation method thereof |
-
2021
- 2021-05-13 CN CN202110523824.7A patent/CN113305469B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RO100289B1 (en) * | 1988-05-27 | 1990-11-30 | INSTITUTUL DE SUDURA SI îNCERCARI DE MATERIALE | Electrodes paste for build-up welding |
| CN1040160A (en) * | 1988-08-12 | 1990-03-07 | 国家机械工业委员会哈尔滨焊接研究所36693 | A kind of high-basicity sintered flux |
| CN1644300A (en) * | 2005-01-21 | 2005-07-27 | 中国船舶重工集团公司第七二五研究所 | Low alloy high-toughness electric welding rod containing copper |
| WO2008072835A1 (en) * | 2006-12-13 | 2008-06-19 | Kiswel Ltd. | Sintered flux for submerged arc welding |
| 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 |
| CN101733587A (en) * | 2010-01-20 | 2010-06-16 | 中国船舶重工集团公司第七二五研究所 | Stainless steel sintered flux |
| CN103030286A (en) * | 2012-12-05 | 2013-04-10 | 毛庆云 | Surface dense pore-free microcrystalline glass and preparation method thereof |
| CN103934594A (en) * | 2014-03-28 | 2014-07-23 | 中国船舶重工集团公司第七二五研究所 | Ultralow hydrogen ceramic welding flux for chrome molybdenum heat resistant steel and preparation method thereof |
| WO2018000562A1 (en) * | 2016-06-28 | 2018-01-04 | 美轲（广州）化学股份有限公司 | Compound zirconium silicate opacifying agent, preparation method therefor and application thereof |
| CN110102933A (en) * | 2019-04-19 | 2019-08-09 | 洛阳双瑞特种合金材料有限公司 | A kind of 9Ni steel welding fysed flux and preparation method thereof |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113714684A (en) * | 2021-10-29 | 2021-11-30 | 东北大学 | Smelting flux for welding HSLA steel and preparation method thereof |
| CN113714684B (en) * | 2021-10-29 | 2022-02-22 | 东北大学 | Smelting flux for welding HSLA steel and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113305469B (en) | 2022-11-08 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106271218B (en) | A kind of sintered flux and preparation method thereof for the welding of ocean engineering high-strength steel | |
| CN107931888B (en) | High-strength steel welding rod for hydroelectric engineering and preparation method thereof | |
| CN108581270B (en) | Sintered flux for welding LPG ship and preparation method and application thereof | |
| CN106624460B (en) | Marine low-temperature steel submerged-arc welding sintered flux | |
| CN103273222B (en) | High-strength high-tenacity sintered flux for afterheat-free welding | |
| CN101745758B (en) | Nickel-based welding rod for AC welding | |
| CN107442968B (en) | Welding rod for welding nickel-based alloy or Ni9% steel and production method thereof | |
| CN101954553B (en) | 9Ni steel sintered flux and preparation method thereof | |
| CN106238965A (en) | A kind of 9Ni steel welding sintered flux and preparation method thereof | |
| CN103008918A (en) | Submerged-arc welding flux for high-strength steel with strength not smaller than 780MPa, manufacture method and welding wire | |
| CN103008913A (en) | Corrosion-resistance stainless steel electric welding rod used for nuclear power and production method thereof | |
| CN111660038B (en) | Sintered flux for welding high-manganese low-temperature steel and preparation method thereof | |
| CN103008923A (en) | Low-hydrogen basic welding rod for welding 1Ni9 steel and preparation method thereof | |
| CN104226947A (en) | Tundish covering agent for ultra-low-carbon steel | |
| CN110653518B (en) | Seamless flux-cored wire for high-manganese low-temperature steel of LNG storage tank and preparation method | |
| CN113305469B (en) | Smelting flux for submerged-arc welding of austenitic welding wire and preparation method thereof | |
| CN108581273A (en) | A kind of ultralow diffusible hydrogen sintered flux and preparation and application for low-temperature steel welding | |
| CN105234590A (en) | SA-508Gr.3Cl.2 steel submerged arc welding agent for nuclear power engineering and special welding wire | |
| CN110102933B (en) | Smelting flux for welding 9Ni steel and preparation method thereof | |
| CN114850724A (en) | High-alkaline sintered flux for submerged-arc welding of austenitic low-temperature steel and preparation method thereof | |
| CN109093286A (en) | A kind of 2.25Cr-1Mo steel exchange submerged arc welding welding wire and solder flux | |
| CN106670678B (en) | A kind of 347 stainless flux-cored wires for plate sheet welding | |
| CN104816106A (en) | Special submerged arc horizontal welding flux for pressure-bearing storage tank | |
| CN104439759A (en) | Titania-calcium welding rod for welding double-phase stainless steel | |
| CN111790999A (en) | Flux combination of metal powder core submerged arc welding wire for 25Mn austenitic steel |
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 |