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1214 results about "Flux-cored arc welding" patented technology
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Flux-cored arc welding (FCAW or FCA) is a semi-automatic or automatic arc welding process. FCAW requires a continuously-fed consumable tubular electrode containing a flux and a constant-voltage or, less commonly, a constant-current welding power supply. An externally supplied shielding gas is sometimes used, but often the flux itself is relied upon to generate the necessary protection from the atmosphere, producing both gaseous protection and liquid slag protecting the weld. The process is widely used in construction because of its high welding speed and portability.
Flux-cored wire for different-material bonding and method of bonding different materials
InactiveUS20090017328A1High bonding strengthRaise checkHot-dipping/immersion processesArc welding apparatusHigh intensityChloride
There are provided a flux cored wire for joining dissimilar materials with each other, capable of enhancing a bonding strength upon joining an aluminum-base material with a steel-base material, and excellent in bonding efficiency, a method for joining the dissimilar materials with each other, and a bonded joint obtained by the method. In particular, there is provided a method for joining dissimilar materials with each other, in the case of melt weld-bonding of high-strength dissimilar materials with each other, that is, the high-strength steel member with the high-strength 6000 series aluminum alloy member and in the case of the steel member being a galvanized steel member. In one mode, use is made of a flux cored wire wherein the interior of an aluminum alloy envelope is filled up with a flux, the flux has fluoride composition containing a given amount of AlF3 without containing chloride, and the aluminum alloy of the envelope contains Si in a range of 1 to 13 mass %. If such a flux cored wire is use, it is possible to obtain a high bonding strength in the case of melt weld-bonding of high-strength dissimilar materials with each other, that is, the high-strength steel member with the high-strength 6000 series aluminum alloy member.
Owner:KOBE STEEL LTD
High intensity metallic core type seamless flux-cored wire
InactiveCN101323057AImprove impact toughnessReduce the ductile-brittle transition temperatureWelding/cutting media/materialsSoldering mediaManufacturing technologyHigh intensity
The invention discloses a high strength metal core type seamless flux-cored welding wire relating to the technical field of welding materials; the invention can be manufactured by adopting the existing steel tube drawing or in-service welding seamless flux-cored welding wire manufacturing technology; the diameter of a steel tube is reduced to the extent that the filling diameter of a specified filling rate can be acquired; by using the vibration filling pattern, filler is filled from one end of the steel tube; wire drawing processing is performed by using a roller group or a wire drawing die group, and during the period intermediate annealing is carried out (under 650 DEG C for two hours). The high strength metal core type seamless flux-cored welding wire of the invention has the advantage that yield strength is larger than 785MPa, and the requirements of high strength structure steel welding can be satisfied.
Owner:725TH RES INST OF CHINA SHIPBUILDING INDAL CORP
Method for manufacturing seamed flux-cored welding wire
ActiveUS20050044687A1Improve feeding effectReduce contentDrawing diesWelding/cutting media/materialsWire rodSulfur
Disclosed herein is a manufacturing method, excellent in wire drawability, of a seamed flux-cored welding wire having both favorable feedability and low hydrogen content characteristic. The method for manufacturing a seamed flux-cored wire, comprises the steps of: drawing a tube-like formed wire including a flux filled therein using a lubricant; removing the lubricant from the drawn wire by a physical means; and coating a lubricant (coating an oil) for wire feeding on the wire surface. The respective steps are carried out in an in-line manner. In the wire drawing step, a wire drawing lubricant containing a sulfur-bearing high-pressure lubricant is used, and the overall wire drawing from the tube-like formed wire to a roughly product-diameter wire is carried out by means of a roller die.
Owner:KOBE STEEL LTD
Flux-cored wire for gas-shielded arc welding
InactiveUS6940042B2Improve toughnessWelding/cutting media/materialsSoldering mediaToughnessFlux-cored arc welding
A flux-cored wire for gas-shielded arc welding comprises a steel sheath, and a flux filled in the steel sheath. The flux-cored wire has a C content of 0.20% by mass or below, a Si content in the range of 0.06 to 1.10% by mass, a Mn content in the range of 0.55 to 1.60% by mass, a Cr content of 2.60% by mass or below, a Mo content in the range of 0.30 to 1.50% by mass, a Mg content in the range of 0.20 to 1.50% by mass, a N content in the range of 0.005 to 0.035% by mass and a B content in the range of 0.001 to 0.020% by mass on the basis of the total mass of the flux-cored wire. The flux has a TiO2 content in the range of 4.2 to 8.2% by mass and a fluorine compound content in terms of F content in the range of 0.025 to 0.55% by mass on the basis of the total mass of the flux-cored wire, and the flux-cored wire has an Al content of 0.50% by mass or below, a Nb content of 0.015% by mass or below, and a V content of 0.015% by mass or below on the basis of the total mass of the flux-cored wire. The flux-cored wire forms a weld metal that is resistant to ferrite band maintains proper tensile strength and excellent toughness even if the weld metal is processed at high temperatures for a long time for PWHT. The flux-cored wire has satisfactory usability
Owner:KOBE STEEL LTD
High hardness ferritic stainless steel wearable surfacing flux-cored wire
InactiveCN101224527AOvercome the disadvantage of poor wear resistanceHigh hardnessWelding/cutting media/materialsSoldering mediaHigh carbonBoron carbide
The invention provides a high hardness ferrite stainless steel wearable flux-cored wire, which takes a low carbon steel H08A cold rolling thin steel strip as an external wrapper; furthermore, the wrapper is internally provided with a powder core which is composed of graphite, metal and alloy powder; the weight percentages of all ingredients of the powder core are 50-75% of high carbon ferrochrome, 10-16% of ferrovanadium, 6-10% of ferrotitanium, 2-10% of tungsten carbide, 2-3% of nickel powder, 1.5-2.5% of silver graphite, 1-3.5% of boron carbide, 1-2% of aluminium magnesium powder, 0-10% of metallic chromium, and the residual quantity of reduced iron powder; the filling proportion of the powder core is 46-50%; the invention adopts the technical proposal that high-content ferrovanadium and adequate alloy powders such as tungsten carbide and boron carbide, etc. are added into the flux-cored wire, changes the microstructure of the existing ferrite stainless steel flux-cored wire surfacing alloy, overcomes the shortages of poor wearability and ductility, and can be applied to submerged arc bead weld manufacture or repair of the parts which has high requirement of abrasion and the corrosion resistance of the wearable grain.
Owner:XIANGTAN UNIV
Flux-cored welding wire and method for arc overlay welding using the same
InactiveUS20120055903A1Improve solderabilityLow dilution ratioArc welding apparatusWelding/cutting media/materialsShielding gasCorrosion resistant
To provide a flux-cored welding wire and a method for arc overlay welding attaining excellent weldability and low dilution ratio and obtaining a weld bead excellent in corrosion resistance in overlay welding using the flux-cored welding wire having an advantage of high deposition rate and deposition efficiency. The flux-cored welding wire for gas shielded arc welding including flux filled up in an outer sheath and using pure Ar as a shielding gas contains, as percentage to the total mass of the flux-cored welding wire, C: 0.20 mass % or below, Si: 15.00 mass % or below, Mn: 20.00 mass % or below, P: 0.0500 mass % or below, S: 0.0500 mass % or below, and Cr: 15.0-50.0 mass %, with the remainder being Fe and inevitable impurities.
Owner:KOBE STEEL LTD
High chromium cast iron self protective build-up welding cored welding wire and its usage
InactiveCN1714986ARealize direct surfacingOverlay welding wear-resistant and corrosion-resistantArc welding apparatusWelding/cutting media/materialsHigh carbonManganese
The self-protective high chromium cast iron cored build-up welding wire has metal powder core comprising nickel powder 6-8 wt%, middle carbon manganese iron 8-10 wt%, No. 45 ferrosilicon 9-12 wt%, high carbon ferrochromium 65-75 wt%, metal Cr powder 18-21 wt%, ferromolybdenum 5-7 wt% and Al-Mg powder 1.5-2.5 wt%, and with one welding wire filling amount of 0.49-0.53. The present invention makes it possible to use the welding wire in submerged arc welding without needing added flux and protecting gas, results in raised comprehensive welding performance and raised welding quality, and may be applied widely in build-up welding field requiring high antiwear, anticorrosive and anticracking performance.
Owner:XIANGTAN UNIV
Pure ar gas shielded welding mig flux-cored wire and mig arc welding method
InactiveUS20090261085A1High static tensile strengthLow-cost and stable pure Ar-MIG weldingArc welding apparatusWelding/cutting media/materialsSlagGreenhouse effect
A pure Ar-MIG welding wire for welding steel according to the present invention is formed of a flux-cored wire. The flux-cored wire is formed in the manner that a formation formed by welding a carbon steel hoop into a pipe shape or a seamless pipe is used as an outer sheath, the outer sheath is filled with a flux, and a wire drawing process is performed. The flux accounts for 7 to 27 mass % of the total wire mass. The wire contains graphite in the amount of 0.16 to 2.00 mass % on the basis of the total wire mass and iron powder in the amount of 20 mass % on the basis of the total flux mass. According to the construction, neither expensive metal resource nor a greenhouse effect gas is used, slag and fume generation is inhibited, and a weld joint having a high static tensile strength and fatigue strength can be obtained.
Owner:KOBE STEEL LTD
Iron-based high-titanium wear-resistant surfacing flux-cored welding wire
InactiveCN101664862AAchieving wear resistanceImprove performanceWelding/cutting media/materialsSoldering mediaBorideCrazing
The invention relates to an iron-based high-titanium wear-resistant surfacing flux-cored welding wire. Among a plurality of types of the prior wear-resistant surfacing welding wires and alloys, some alloys have favorable wearing resistance, and some alloys have great brittleness, lower toughness and easy cracking and are not suitable for the existence of low-impact grinding wear working condition.The iron-based high-titanium wear-resistant surfacing flux-cored welding wire comprises a low-carbon steel ladle clad and core powder as well as the following alloy elements in percentage by weight:1.0-3.0 C, 1.0-12.0 Ti, 0.5-9.0 V, 0.1-1.5 Si, 0.2-2.0 Mn, 0-3.0 B, 0.00-0.10 RE, 0-13.0 Cr, 0-1.0 Mo, 0-1.0 W, 0-2.0 Ni, 0-0.5 Nb and 0-0.5 Zr. The iron-based high-titanium wear-resistant surfacing flux-cored welding wire realizes the wear-resistant performance of the alloys mainly by carbides and borides formed by the alloy elements of C, Ti, V, and the like as well as a small amount of B element and adjusts the combination of the elements of C, Ti, V, Si, Mn, B, and the like to adjust the alloy hardness, enhance the toughness and lower the crack sensitivity.
Owner:王新虎
Method for producing cold-rolled steel strips
ActiveCN102416404AImprove pull performanceGood welding performanceMetal rolling arrangementsSlagLight treatment
The invention discloses a method for producing cold-rolled steel strips. The method comprises the following steps of: performing krypton (KR) desulfurization treatment, converter dephosphorization-less slag decarburization and relative humidity (RH) light treatment on molten iron, and performing continuous casting to obtain a high-purity plate blank; heating the plate blank, performing rough rolling and precision rolling to obtain a hot-rolled plate, cooling the hot-rolled plate and coiling the hot-rolled plate into a hot-rolled coil; and performing cold rolling, annealing and flattening on the hot-rolled coil, and coiling the hot-rolled coil into a finished product. By the method for producing the cold-rolled steel strips, the cold-rolled steel strips which have high drawing property and good welding performance and can be used for flux-cored wires can be produced, the production requirement of the flux-cored wires is met, splash in the welding process is reduced, seams with good welding quality are obtained, and the automation level of welding is improved.
Owner:SHOUGANG CORPORATION
Flux-cored wire for gas-shielded Arc welding of heat resisting steel
InactiveUS20020003135A1Improve mobilityImprove mechanical propertiesArc welding apparatusWelding/cutting media/materialsSlagFluoride
A flux-cored wire for gas-shielded arc welding of heat-resisting steel in the form of a steel tube filled with a flux, which is characterized in that the content of slag-forming agent is 6.10-9.90 mass % (based on the total mass of the wire), said steel tube and said flux all together contain less than 0.20 mass % C, 0.06-1.40 mass % Si, 0.55-1.60 mass % Mn, 0.004-0.090 mass % Cu, 0.004-0.090 mass % Ni, less than 2.60 mass % Cr, and 0.3-1.20 mass % Mo (based on the total mass of the wire), and said flux contains 4.2-8.2 mass % TiO2, 0.025-0.25 mass % of metal fluoride (in terms of fluorine), and 0.20-1.50 mass % Mg. The flux-cored wire has both good welding maneuverability and ability to give weld metal with good mechanical properties, such as strength and toughness.
Owner:KOBE STEEL LTD
Silver-based flux-cored wire and manufacturing method thereof
ActiveCN102513726ASatisfy soldering temperature matchingNot easy to absorb moistureWelding/cutting media/materialsSoldering mediaLiquid stateInlet valve
Provided are a silver-based flux-cored wire and a manufacturing method thereof. The manufacturing method of the silver-based flux-cored wire includes the following steps: 1 placing soldering flux powder in a soldering flux jar, heating up to 580-600 DEG C, and smelting soldering flux to liquid state for use; 2 smelting proportioned silver, copper and zinc to be cast to bars, then turning the cast bars to remove scale, and cutting the cast bars to ingots for use; 3 enabling a flux-cored wire extrusion device to be heated to 520-530 DEG C; 4 placing the ingots in a muffle furnace for preheating with the preheating temperature at 560-580 DEG C; 5 placing the preheated ingots in a mould drum of the flux-cored wire extrusion device, starting a press of the flux-cored wire extrusion device to extrude an extrusion rod into an upper mould drum, and enabling alloy to be extruded into a material leading cone, enter an upper mould, a mould core and a lower mould through split-flow and then form a hollow pipe; and 6 opening an air inlet valve of the soldering flux jar, pressurizing, and enabling the liquid-state soldering flux in the soldering flux jar to be pressed into a feeding port to enter the mould core and be injected to the alloy hollow pipe to be solidified after heat dissipation. Thus, the silver-based flux-cored wire is produced. Compared with the prior art, the silver-based flux-cored wire and the manufacturing method thereof have the advantages of being simple in soldering process, high in production efficiency, low in cost, easy in controlling use level of soldering flux accurately, capable of meeting the requirement for alloy welding temperature matching, easy in cleaning after welding, good in welding performance, not prone to moisture absorption of solder wires, and long in storage time of solder wires.
Owner:FOSHAN CITY YIHONG WELDING CO LTD
Method for manufacturing particle reinforced metal-based composite part through double-wire plasma arc surfacing
ActiveCN107116290ASolve the problem of difficult access to the inside of the molten poolInhibition of agglomerationPlasma welding apparatusWelding/cutting media/materialsInsertion depthMetallurgy
The invention discloses a method for manufacturing a particle reinforced metal-based composite part through double-wire plasma arc surfacing. Double wires are a flux-cored wire and a metal cored wire. The method comprises the steps that during surfacing: untransferable arcs are opened, a surfacing starting position is corrected, feeding position and feeding angle of the metal cored wire and the flux-cored wire are adjusted through a metal cored wire feeding mechanism and a flux-cored wire heating and feeding mechanism, transferred arcs are opened for surfacing, the metal cored wire feeding mechanism feeds the metal cored wire from the position in front of a welding gun to an arc column zone of a plasma arc, the metal cored wire is molten to form a molten pool, the flux-cored wire heating and feeding mechanism starts to feed the flux-cored wire after heating the flux-cored wire to 180 DEG C to 220 DEG C, feeding time of the flux-cored wire is delayed by 1 s to 2 s, after the metal cored wire forms the molten pool, the flux-cored wire is inserted into the molten pool from the position outside the arc column of the plasma arc, insertion depth is 2 mm to 3 mm, a robot controls the welding gun to perform surfacing layer by layer according to a set track under control of a control code, and the particle reinforced metal-based composite part is obtained through surfacing after the welding gun completes surfacing along the track.
Owner:NANHUA UNIV
Wire for welding
InactiveUS6337144B1Increase the number ofElectric discharge heatingSynthetic resin layered productsUnsaturated hydrocarbonCarbon steel
A welding wire of the type consists of a plated or uncovered solid wire and a flux-cored wire for carbon steel or stainless steel, wherein one or more of hydrocarbon compounds selected from the group consisting of saturated or unsaturated hydrocarbon compounds, which have from 5 to 12 carbon atoms and a linear or branched structure, and hydrocarbon compounds having a cyclic structure are deposited on a wire surface. A lubricating oil and / or lubricating particles are chemically combined with a wire surface through the one or more hydrocarbon compounds. The total amount of the hydrocarbon compounds, and a lubricating oil and / or lubricating particles deposited on the wire surface is in the range of 0.1 to 5 g per 10 kg of the wire.
Owner:KOBE STEEL LTD
Double-arc fuse collaborative additive manufacturing method of high-entropy alloy
ActiveCN108326427AEasy to adjust ingredientsEasy to adjust grain sizeAdditive manufacturing apparatusLaser beam welding apparatusManufacturing technologyHigh entropy alloys
The invention relates to the technical field of high-entropy alloys, and specifically discloses a double-arc fuse collaborative additive manufacturing method of a high-entropy alloy. The method is characterized in that raw materials are supplied based on a formula of the high-entropy alloy, wherein the raw materials include an alloy strip and flux core powder; the alloy strip and the flux core powder are prepared into a flux cored welding wire; and then a double-arc fuse collaborative additive manufacturing method is carried out to obtain a part or a blocky alloy as requirement. The method isstable in processes, high in cladding efficiency, high in preparation efficiency, wide in heat input adjusting range, low in cost, convenient to adjust the components of the alloy and the size of crystal grains; in addition, the method is applicable to manufacturing of massive high-entropy alloys as well as precise high-entropy alloy parts.
Owner:SHIJIAZHUANG TIEDAO UNIV
Welding flux core welding wire for continuous cast roller over laying welding
InactiveCN1597233AImprove wear resistanceGood thermal fatigue resistanceWelding/cutting media/materialsSoldering mediaWear resistanceMaterials science
Owner:PANZHIHUA IRON & STEEL RES INST OF PANGANG GROUP
High-strength and high-toughness metal powder flux-cored wire
InactiveCN102179640AGood welding process adaptabilityStable mechanical propertiesArc welding apparatusWelding/cutting media/materialsFillet weldHydrogen
The invention relates to a high-strength and high-toughness metal powder flux-cored wire which comprises a carbon steel sheath (weight percentage: 78-84%) and a flux core (weight percentage: 16-22%), wherein the flux core comprises the following components in percentage by weight: 0.10-1.5% of TiO2, 0.10-0.5% of SiO2, 0.02-0.20% of Na2O+K2O, 0.2-0.7% of Si, 0.04-0.44% of Mg+Al, 0.02-0.18% of C, 0.05-0.30% of Zr, 1.2-2.6% of Mn, 0.6-1.4% of Cr, 3.0-5.0% of Ni, 0.4-2.0% of Mo, 0.2-1.0% of one or two of NaF or CaF2 and the balance of Fe and inevitable impurities. Through adopting a metal powder cored slag system and cooperating with the protection of argon-rich mixed gas (consisting of 80% of Ar and 20% of CO2), the high-strength and high-toughness metal powder flux-cored wire provided by the invention is mainly applicable to downward welding and horizontal fillet welding. In addition, the high-strength and high-toughness metal powder flux-cored wire is good in welding process adaptability, stable in mechanical performance, good in cold cracking resistance, fine in seawater corrosion resistance and excellent in anti-explosion performance; and meanwhile, the yield ratio of weld metalsis below 0.87, and the diffusible hydrogen in deposited metals reaches an ultra-low hydrogen level.
Owner:WUHAN TEMO WELDING CONSUMABLES CO LTD
Abrasion-resisting surfacing flux-cored wire for coal milling roller
InactiveCN102554503AArc stabilizationLess slagWelding/cutting media/materialsSoldering mediaHigh carbonFerrosilicon
The invention relates to an abrasion-resisting surfacing flux-cored wire for a coal milling roller, which is composed of high carbon ferro chrome 45-65%, chromium carbide 8-20%, chromium metal 5-15%, flake graphite 3-8%, high carbon ferromanganese 3-6%, 75# ferrosilicon 5-7%, ferroboron 5-15%, aluminum magnesium alloy 2-5% and an agglutinant 2-8%. The diameter of a welding wire is phi 3.2-phi 4.0mm, welding wire metal is a low carbon steel strip, and 49%-53% of cored powder by mass is filled in the formed low carbon steel strip. No protective gas is additionally arranged outside the flux-cored wire, and the manufacturability is good in the self protection open arc welding. During the welding, the arc is stable, the spatter lose rate is low, molten slag is little, the welding can be continuously performed, the welding joint is attractive in forming, the self-protection effect is good, and no air holes is on the surface of the flux-cored wire. The hardness of the abrasion-resisting surfacing flux-cored wire for the coal milling roller reaches above 62 HRC after multilayer surfacing by metal piling, the evenness of the whole hardness is + / -2HRC, and the performance resistant to abrasion of low-stress grinding materials is good.
Owner:LUOYANG SHUANGRUI SPECIAL ALLOY MATERIALS
460MPa-level flux-cored wire for ocean engineering and application thereof
ActiveCN105269174AStable mechanical propertiesImprove crack resistanceArc welding apparatusWelding/cutting media/materialsCrack resistanceWeld seam
The invention provides a 460MPa-level flux-cored wire for ocean engineering. The 460MPa-level flux-cored wire comprises a carbon steel sheath and a flux core, wherein the carbon steel sheath accounts for 84-87% of the total mass of the flux core; the flux core accounts for 13-16% of the total mass of the flux-cored wire; the flux-cored wire consists of the following components in percentage by mass: 30-42% of rutile, 1-2% of sodium fluoride, 3-6% of feldspar, 3-5% of ferrotitanium, 1-3% of silicon iron, 0.5-1% of rear earth, 3-5% of magnesium powder, 5-10% of electrolytic manganese, 1-2% of aluminum powder, 7-9% of nickel powder, 4-7% of ferroboron, 0.2-0.5% of graphite, 3-6% of silicon-manganese alloy, 0.5-1% of zircon sand and the balance of Fe and inevitable impurities. By virtue of control in aspects of chemical components, diffusible hydrogen, low-temperature stability and the like, the 460MPa-level flux-cored wire meets the requirements of crack resistance and low-temperature impact resistance, is good in all-position welding process, attractive in welding seam and excellent in mechanical property, has seawater corrosion resistance; and content of diffusible hydrogen of deposited metal reaches ultralow hydrogen level.
Owner:WUHAN TEMO WELDING CONSUMABLES CO LTD
Chemical powder components of 2507 type super double-phase stainless steel flux-cored wire
InactiveCN101966628AGood performance in welding operationBeautiful weld shapeWelding/cutting media/materialsSoldering mediaElectrolysisDouble phase
The invention belongs to the field of welding materials and discloses chemical powder components of a 2507 type super double-phase stainless steel flux-cored wire. A common 304L stainless steel metal strip is used as an outer skin; the chemical powder components are filled inside the common 304L stainless steel metal strip to be rolled into a flux-cored wire. The chemical powder components of the 2507 type super double-phase stainless steel flux-cored wire are characterized by comprising the following components in percent by mass: 19 percent-38 percent of rutile, 3 percent-5 percent of zircon sand, 2 percent-4 percent of potassium fluoroaluminate, 1 percent-2 percent of aluminium magnesium alloy, 1 percent-3 percent of chromium nitride, 30 percent-35 percent of metallic chrome, 8 percent-10 percent of metallic nickel, 1 percent-2 percent of electrolytic manganese metal, 14.5 percent-20 percent of metallic molybdenum and 0.5 percent-1 percent of antimony oxide. In the invention, the steel pipe made from the 304L stainless steel strip (with the specification of 10*0.4mm) filled with the chemical powder is manufactured into the super double-phase stainless steel flux-cored wire according to the general production process. CO2 is used as welding protection gas for the flux-cored wire, and the flux-cored wire has the characteristics of good welding operation process performance, attractive welding line moulding, excellent welding process performance, favorable balance of welding tissue austenite and ferrite and the like.
Owner:725TH RES INST OF CHINA SHIPBUILDING INDAL CORP
Technique for manufacturing flux-cored wire from disk round steel wire bar
InactiveCN101239430ASufficient bending radiusPrevent space warpingFurnace typesRollsFill rateBreakage rate
A technique for producing flux-cored wires by using disc round steel wire bars is characterized by comprising following steps: using disc round steel wire bars as raw materials; producing accurate steel bands used for flux-cored wires exclusively; producing semi-finished products which are flux-cored wire blank tubes by using accurate steel bands; producing termination products by drafting to reduce the diameter thereof with a high speed; packaging the termination products by winding with a high speed. The advantages of the invention are: the invented technique uses high-speed hot-rolling disc round steel wire bars to replace broad cold-rolled steel strip, so that the raw material cost is reduced greatly; the continuous overlong endless accurate steel bands are used to save assistant procedure time for welding steel band joints, reduce end breakage rate during rolling and drafting procedures, improve continuous operation rate, and further reduce production cost; the invented technique uses high-speed accurate cold tandem rolling machine group to solve the problem that the sheet iron rolling precision is difficult to be controlled when rolling flux-cored wires by using disc round steel wire bars directly, and the filling precision is improved greatly since size accuracy of the flux-cored wire exclusive use accurate steel bands is high.
Owner:TIANJIN SAINTEAGLE WELDING CO LTD
Pure argon gas shielded welding mig flux-cored wire and mig arc welding method
ActiveCN101559544AHigh strengthImprove fatigue strengthArc welding apparatusWelding/cutting media/materialsSlagArc welding
A pure Ar-MIG welding wire for welding steel according to the present invention is formed of a flux-cored wire. The flux-cored wire is formed in the manner that a formation formed by welding a carbon steel hoop into a pipe shape or a seamless pipe is used as an outer sheath, the outer sheath is filled with a flux, and a wire drawing process is performed. The flux accounts for 7 to 27 mass% of the total wire mass. The wire contains graphite in the amount of 0.16 to 2.00 mass% on the basis of the total wire mass and iron powder in the amount of 20 mass% on the basis of the total flux mass. According to the construction, neither expensive metal resource nor a greenhouse effect gas is used, slag and fume generation is inhibited, and a weld joint having a high static tensile strength and fatigue strength can be obtained.
Owner:KOBE STEEL LTD
Wear-resistant overlaying flux-cored wire
InactiveCN104325232ASimple welding processA large amountWelding/cutting media/materialsSoldering mediaElectrolysisFerrosilicon
The invention relates to a wear-resistant overlaying flux-cored wire. The wear-resistant overlaying flux-cored wire comprises a low-carbon steel outer layer and a flux core inner layer, wherein the filling coefficient of a flux core is 45-55 percent, and the overlaying flux-cored wire is characterized in that the flux core comprises the following components in parts by weight: 1-6 parts of microcrystalline graphite, 1-4 parts of aluminum-magnesium alloy, 1-2 parts of fluoride, 1-2 parts of silicate, 1-3 parts of titanate, 1-2 parts of carbonate, 30-80 parts of high carbon ferro-chrome, 15-45 parts of metal chromium carbide, 5-10 parts of electrolytic chromium powder, 3-6 parts of high carbon ferromanganese, 1-4 parts of rare earth ferrosilicon, 2-6 parts of ferrosilicon, 4-10 parts of ferromolybdenum, 5-10 parts of ferrotungsten, 5-10 parts of ferrovanadium, 4-10 parts of ferrocolumbium, 4-10 parts of ferrotitanium and 1-4 parts of ferroboron. The wear-resistant overlaying flux-cored wire has the advantages of good hardness, wear resistance and anti-cracking performance.
Owner:李永锋
Flux-cored wire for stainless steel welding
ActiveCN103521951ASuitable for weldingWelding/cutting media/materialsSoldering mediaManganeseRare earth
The invention relates to a flux-cored wire for stainless steel welding, and particularly discloses the flux-cored wire for stainless steel welding. The flux-cored wire is composed of flux-cored powder and a stainless steel belt, wherein the flux-cored powder is wrapped by the stainless steel belt. The flux-cored wire for stainless steel welding is characterized in that the flux-cored powder accounts for15-25% of the total weight of the flux-cored wire, the flux-cored powder comprises, by weight, 30-38 parts of metal chromium powder, 6-15 parts of metal nickel powder, 3-10 parts of metal manganese powder, 20-35 parts of rutile, 1-6 parts of silicon iron, 1-7 parts of ferrotitanium, 2-10 parts of feldspar, 5-10 parts of quartz, 1-5 parts of rare earth fluoride, 1-5 parts of metal nitride powder and appropriate iron powder, and the total flux-cored powder is, by weight, 100 parts. A reduction jar of the flux-cored wire for welding is long in service cycle, and deposited metal formed by the flux-cored wire has the excellent effects of high temperature oxidation resistant capacity and high temperature sulphur corrosion resistant capacity.
Owner:BEIJING JINWEI WELDING MATERIAL +1
Flux-cored wire for fusion welding butt joint of titanium-steel composite board and preparation method of flux-cored wire
InactiveCN104028917ASmall diameterEffective connectionArc welding apparatusWelding/cutting media/materialsFilling rateMaterials science
A flux-cored wire for fusion welding butt joint of a titanium-steel composite board comprises the components in percentage by mass as follows: 80-81% of vanadium powder and 19-20% of chromium powder, and the sum of the mass percentageof the components is 100%. The invention further discloses a preparation method of the flux-cored wire. The preparation method comprises the steps as follows: the vanadium powder and the chromium powder are dry-mixed to obtain flux core powder, the flux core powder is placed on a charging machine of flux-cored wire production equipment, a copper belt is placed on a belt unwinding machine, ultrasonic cleaning is performed, then U-shaped groove rolling and powder adding operations are performed, the powder filling rate is controlled, sealing of the copper belt is performed through a forming machine, and a wire with the diameter of 3.8 mm is formed; then the flux-cored wire is obtained through six reducing treatment processes and a nine-stage reducing finish drawing treatment process sequentially. By means of the flux-cored wire, a titanium layer and a steel layer weld structure of the composite board can be effectively joined together, and the fusion welding butt joint of the titanium-steel composite board is realized; an obtained weld joint has excellent toughness; and the preparation process is simple, and mass production is facilitated.
Owner:XIAN UNIV OF TECH
Manufacturing method of seamless flux-cored wire
InactiveCN102310302AMeet welding needsWelding/cutting media/materialsSoldering mediaHydrogen contentHigh intensity
Owner:725TH RES INST OF CHINA SHIPBUILDING INDAL CORP
Full-position soldering biphase stainless steel flux-cored wire
InactiveCN101134271AEasy to remove slagArc stabilizationWelding/cutting media/materialsSoldering mediaWeld seamMaterials processing
The flux cored wire for all position welding of two-phase stainless steel has flux core comprising metal Cr powder 35-40 wt%, metal Mo powder 11-15 wt%, metal Ni powder 2-4 wt%, metal Mn powder 3-5 wt%, Al-Mg alloy 2-5 wt%, cryolite 1-4 wt%, quartz 4-9 wt%, feldspar 2-8 wt%, rutile 21-30 wt%, Al2O30.5-4 wt%, zirconite 1-5 wt%, Bi2O30.5-3 wt%, and manganese nitride 0.5-3 wt%. Welding two-phase stainless steel with flux cored wire can form weld seam with excellent corrosion resisting performance and high impact toughness, and the flux cored wire has excellent welding performance and all position welding adaptability.
Owner:栗卓新
Slag-free flux-cored wire
ActiveCN101780609AIncrease the combinationImprove toughnessWelding/cutting media/materialsSoldering mediaSlagFerrosilicon
The invention provides a novel process for a formula of a slag-free flux-cored wire, and relates to a welding material. The manufacturing method adds the combination of molybdenum powder, nickel powder and rare earth silicon to a formula of raw materials, eliminates mineral powder in a common formula, and optimizes the proportion of various types of metal powder in the formula. According to the formula, the welding material comprises the following components: 4 to 8 parts of micro carbon ferrochromium, 12 to 18 parts of low carbon ferromanganese, 56 to 67 parts of iron powder, 2 to 6 parts of molybdenum powder, 0.1 to 0.4 part of ferroboron, 2 to 5 parts of rare earth silicon, 1 to 3 parts of ferrosilicon, 2 to 3 parts of ferrotitanium, 2 to 3 parts of sodium fluoride, 3 to 7 parts of ferroaluminum, 1 to 3 parts of aluminum to magnesium powder and 4 to 8 parts of nickel powder. The invention improves the toughness, strength and anti-fatigue performance of welding seams and thins welding-seam grains by adding the combination of molybdenum powder, nickel powder and rare earth silicon into the raw materials of the formula, eliminating the mineral powder in the common formula, and optimizing the proportion of various types of metal powder in the formula. Meanwhile, slagging on the surfaces of the welding seams is avoided, and welding efficiency is raised by 20 percent compared with slag-type processes.
Owner:山东聚力焊接材料有限公司
High-strength and high-toughness metal powder type flux-cored wire with no need of being pre-heated before welded
ActiveCN103028864AGood welding performanceGood workmanshipWelding/cutting media/materialsSoldering mediaSlagFerrosilicon
The invention provides a high-strength and high-toughness metal powder type flux-cored wire with no need of being pre-heated before welded. Steel skin is 79-84% of a total weight of a welding wire and a flux core is 16-21% of the total weight of the welding wire. The steel skin is manufactured by using a cold rolling carbon steel strip and comprises the following components: 0.02-0.055% of C, 0.005-0.0085% of Si, 0.15-0.35% of Mn and the balance of iron; and the flux core comprises the following components: 12-18% of nickel powder, 2-4% of manganese powder, 3-7% of silicon iron, 2-6% of ferro-molybdenum, 0.8-2.5% of ferrotitanium, 1-5% of mid-carbon ferromanganese, 0.8-2.5% of potassium fluosilicate and rear earth oxide in sum, and the balance of iron powder. The flux-cored wire provided by the invention has the advantages of good welding process, high melting efficiency and less slag quantity; the yield strength of deposited metal can be more than 590 MPa; the impact rigidity at a temperature of -50 DEG C can be more than 70J; and the diffusible hydrogen is in an ultralow hydrogen level.
Owner:725TH RES INST OF CHINA SHIPBUILDING INDAL CORP
Abrasive wear resistant weld deposit flux-cored wire
InactiveCN101402161AUniform compositionOvercome the disadvantages of easy to cause uneven compositionWelding/cutting media/materialsSoldering mediaWear resistantSmelting process
The invention discloses an overlaying welding agent core welding wire with abrasive wear resistance. A steel strip is wrapped with alloy powder and is subjected to drawing path by path and diameter reduction through a wire-drawing die to form the overlaying welding agent core welding wire, wherein the diameter of the overlaying welding agent core welding wire is between 2.4 and 3.2 mm; the length of the overlaying welding agent core welding wire is freely set; the steel strip is one of an SPCC steel strip, a 08A steel strip and a 08Al steel strip with width of between 18 and 22 mm and thickness of 0.45 and 0.6 mm; and the aluminum alloy powder is manufactured from waste steel and an alloying agent. The overlaying welding agent core welding wire is designed according to the composition requirement of overlaying welding metal; and compositions are fully homogenized in the smelting process of pulverization, thereby overcoming the disadvantages that the prior medicine powder for producing the overlaying welding agent core welding wire adopts a mechanical mixing process to easily cause unevenness of the compositions. The overlaying welding agent core welding wire uses the waste steel as one of raw materials of the overlaying welding agent core welding wire with abrasive wear resistance, fully utilizes contained alloy elements, improves the utilization rate of the alloy elements, reduces the cost for the overlaying welding agent core welding wire and achieves the aims of energy conversation and emission reduction.
Owner:SHANDONG UNIV
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