CN102267023B - Metal-powder type stainless steel flux-cored wire - Google Patents

Metal-powder type stainless steel flux-cored wire Download PDF

Info

Publication number
CN102267023B
CN102267023B CN 201110214709 CN201110214709A CN102267023B CN 102267023 B CN102267023 B CN 102267023B CN 201110214709 CN201110214709 CN 201110214709 CN 201110214709 A CN201110214709 A CN 201110214709A CN 102267023 B CN102267023 B CN 102267023B
Authority
CN
China
Prior art keywords
powder
flux
cored wire
stainless steel
metal
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN 201110214709
Other languages
Chinese (zh)
Other versions
CN102267023A (en
Inventor
金鹏
鲁永顺
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Taizhou Haixiang Welding Materials Co Ltd
Original Assignee
Taizhou Haixiang Welding Materials Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Taizhou Haixiang Welding Materials Co Ltd filed Critical Taizhou Haixiang Welding Materials Co Ltd
Priority to CN 201110214709 priority Critical patent/CN102267023B/en
Publication of CN102267023A publication Critical patent/CN102267023A/en
Application granted granted Critical
Publication of CN102267023B publication Critical patent/CN102267023B/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Abstract

The invention relates to a metal-powder type stainless steel flux-cored wire and belongs to the technical field of welding materials. For the metal-powder type stainless steel flux-cored wire, a stainless steel belt serves as an outer skin, and a flux core is filled in the stainless steel belt at the filling rate of 30 to 40 percent to manufacture the flux-cored wire, wherein the flux core comprises chromium powder, nickel powder, molybdenum powder, manganese powder, an arc stabilizer, a deslagging agent and iron powder. The metal-powder type stainless steel flux-cored wire has the advantages of reasonable compatibility, strong synergistic effect among components, good toughness, high metal strength and high corrosion resistance of a welded seam, stable combustion of the welding wire during welding, and low splattering; the welded seam is bright and elegant in molding; real production processes are simplified without subsequent acid-washing, grinding, polishing and the like; and industrialized production is more facilitated.

Description

A kind of metal powder type stainless flux-cored wire
Technical field
The present invention relates to a kind of flux-cored wire, relate in particular to a kind of metal powder type stainless flux-cored wire, belong to technical field of welding materials.
Background technology
Flux-cored wire is a kind of novel welding material that develops rapidly in recent years, is the highest product of technology content in the existing welding material.So flux-cored wire also extensively is used in manufacturing and the reparation of the industries such as building, bridge, chemical industry, metallurgy, electric power and industry reparation.
Flux-cored wire can have different sorting techniques by different situations, and the difference as by the protection situation can be divided into gas shield (CO 2, rich Ar mist) and two kinds of self-shields; Can be divided into below the diameter 2.0mm with more than the thick diameter 2.0mm by gage of wire; Then can be divided into slag making type flux-cored wire (titanium oxide type, lime-titania type, fluorine calcium type) and metal powder type flux-cored wire by packing material.And because the metal powder type welding wire has the characteristics such as solid core welding wire slag amount is lacked and slag flux-cored wire burn-off rate is fast, electric arc is weak concurrently, be widely used in the welding of stainless steel material.So metal powder type flux-cored wire becomes one of main research direction in this area.
Such as Chinese patent application (publication number: CN 101966628A) disclose the medicinal powder composition of super-duplex stainless steel flux-cored wire, its concrete technical scheme is to adopt common 304L stainless steel band as crust, the inner medicinal powder composition of filling, be rolled into flux-cored wire, the component of described medicinal powder composition and the mass percent of proportioning are: rutile 19%~38%; Zircon sand 3%~5%; Potassium fluoroaluminate 2%~4%; Almag 1%~2%; Chromium nitride 1%~3%; Crome metal 30%~35%; Metallic nickel 8%~10%; Electrolytic manganese metal 1%~2%; Metal molybdenum 14.5%~20%; Antimony oxide 0.5%~1.0%.Although adopt this flux-cored wire to solve the welding requirements of welding 2507 super-duplex stainless steels, the mechanical property of weld metal is also better, but it is just for the mutually stainless welding of 2507 super ratios, range of application is less, when not solving preferably its metal powder type stainless flux-cored wire yet and being used for the welding steel during the poor and welding of welding seam toughness because the larger problem of flue dust that high deposition rate produces, and its medicine core powder compatibility is unreasonable, easily causes the fragility of weld metal to change.And the also filling rate of common drug core just of its filling rate, filling rate is between 17%~24%.
Summary of the invention
The present invention is directed to the defective that exists in the above prior art, provide a kind of compatibility rationally, the superior metal powder type stainless flux-cored wire of welding performance when being used for soldering stainless steel.
The objective of the invention is to be achieved by the following technical programs, a kind of metal powder type stainless flux-cored wire is characterized in that: adopt stainless steel belt as crust, and inner charge core, filling rate is 30%~40%, makes flux-cored wire; Described medicine core comprises the percetage by weight of following composition:
Chromium powder: 15%~25%; Nickel powder: 5.0%~15%; Molybdenum powder: 0.1%~0.8%; Manganese powder: 0.2%~0.8%; Arc stabilizer: 1.0%~5.0%; Surplus is iron powder.
Above-mentioned a kind of metal powder type stainless flux-cored wire of the present invention, described medicine core also comprises the percetage by weight of following composition: take off the slag agent: 0.2%~1.0%.
Above-mentioned a kind of metal powder type stainless flux-cored wire of the present invention, in the medicine core between each composition compatibility reasonable, can play good coordinative role, main component is to adopt iron powder in the medicine core of the present invention, iron powder is combined with other metal powder, in the time of making welding, the weld metal physical efficiency forms the ferritic-austenitic two phase structure, has guaranteed that the weld metal zone has better decay resistance and good mechanical property; In the medicine core, add the compositions such as chromium, nickel, molybdenum, manganese, more be conducive to have improved the performance of the weld metal of weld, guaranteed the joint effect after the welding.The present invention's flux-cored wire described above mainly is soldering stainless steel material when being lower than 300 ℃ for the welding job temperature; Optimum mode is for the welding austenitic stainless steel material, such as austenitic stainless steel materials such as 08Cr18Ni9,08Cr18Ni9Ti9.After flux-cored wire of the present invention is used for welding, the weld metal smooth surface, clean, do not need to process the welding slag of removing face of weld, not only welding quality is good again, the advantage that the strong corrosion resistant of weld metal zone and mechanical strength are high, and simplified greatly production process, reduced production cost.Metal powder used in the medicine core of the present invention can not be alloy, can adopt the simple metal powder yet.Impurity content when adopting the more effective control medicinal powder of simple metal powder energy to infiltrate to deposited metal, such as carbon, sulphur, phosphorus etc., thereby the composition of flux-cored wire and stainless steel grade are complementary in the time of also further guaranteeing to weld, so that satisfy mechanical property, and such as performances such as corrosion resistance, phase ratios.The particle size of each component of medicine core of the present invention preferably can satisfy all crosses 50~100 mesh sieves, and suitable medicine slug particle more is conducive to mixing between each composition, splashes when making welding little, and electric arc more moves stable.
As preferably, above-mentioned a kind of metal powder type stainless flux-cored wire, it is characterized in that: described medicine core comprises the percetage by weight of following composition:
Chromium powder: 18%~22%; Nickel powder: 8.0%~12%; Molybdenum powder: 0.2%~0.5%; Manganese powder: 0.4%~0.6%; Arc stabilizer: 1.0%~3.0%; Take off the slag agent: 0.5%~0.8%; Surplus is iron powder.
Above-mentioned a kind of metal powder type stainless flux-cored wire of the present invention, transition elements material when wherein said chromium powder is the conduct welding in the weld metal, chromium powder can improve pitting corrosion resistant performance, the corrosion resistance of weld metal and the intensity of welding have been guaranteed, in the prior art in the used medicinal powder of common flux-cored wire the addition of chromium powder contain at least 35% percetage by weight and just can reach requirement, the raw material consumption is large, and effect neither be fine.Compared with prior art, used chromium powder just can guarantee highly corrosion resistant and weld strength at 15%~25% mass percent in the medicine core of the present invention, has reduced greatly the use of material, and can more effectively produce synergy with other composition.If the addition of chromium powder is too high in the medicine core of the present invention, cause easily that then fragility changes, and impacts toughness drop; If if the addition of chromium powder is excessively low, then do not reaching requirement aspect corrosion resistance and the weld strength yet.
Major metal material during iron powder described above forms as the medicine core forms the Tie Su district in weld metal, make weld metal intensity high, if but the amount that adds is too much, and can make the Tie Su district excessive, thereby cause weld metal fragility to become large, easily jackknifing.And adopt the amount of iron powder used in the medicine core of the present invention, and the performance of the austenitic area that produces in conjunction with other component in the component of the present invention, the distribution of the ferrite area of formation and austenitic area is more closed join, guarantee to form the weld metal of strong mechanical performance and strong corrosion resistant.
Nickel powder described above also is as the transition alloy elements in a kind of weld metal, is the stable microstructural metallic element of austenite that produces of a kind of energy, can strengthen corrosion resistance and the toughness of weld metal.If the amount that adds is excessively low, then toughness is not enough, easily produces embrittlement cracking; If the amount that adds is too high, thus then formed austenite minute digit rate can be excessive so that intensity is tending towards reducing, can affect the performance of the weld metal after the welding.
Molybdenum powder described above is the necessary a kind of composition of high strength that guarantees the corrosion resistance of weld metal, in conjunction with other component of the present invention, can better bring into play its effect.If the amount that adds is excessively low, then can cause effect not, make the corrosion resistance of weld metal and intensity all inadequate; If the amount that adds is too high, then can makes in the weld metal structure and produce intermetallic compound, thereby so that toughness drop, increase the fragility of weld metal.
Described manganese powder is a kind of transition alloy elements in the weld metal equally, can regulate the microstructure of weld metal, thereby helps austenitic production, is combined with nickel powder of the present invention, more is conducive to corrosion resistance and the toughness of weld metal.
As preferably, described arc stabilizer is one or more in fluoride, aluminium powder, the manganese-silicon.Described arc stabilizer Main Function is slag making, can regulate the physical and chemical performance of slag, refinement molten drop and raising fusing coefficient, increase the flowability of slag, reduce the viscosity of slag, thereby can guarantee the arc stability burning, also guaranteed the performance of the all-position welding of welding wire.Arc stabilizer adopts fluoride, can regulate the oxygen amount in the weld seam, in conjunction with other component of the present invention, can effectively remove the effect of hydrogen, thereby play the effect of stabilising arc; Fluoride can be potassium fluoride, sodium fluoride, prodan etc.Arc stabilizer adopts aluminium powder, and aluminium powder is a kind of strong deoxidier, if can use with nitride bonded, generates stable oxide and nitride, can further guarantee the arc stability burning.But aluminium powder is a kind of strong ferrite former, if the amount that adds is too high, can enlarge ferrite area, dwindle the austenitic area, cause weld metal not undergo phase transition in cooling procedure, also can not produce Grain Refinement Effect, thereby reduced greatly the plasticity of weld metal, cause the weld metal embrittlement, and within the scope of the invention, in conjunction with other component of the present invention, can solve this problem, make the stabilising arc better effects if, the plasticity of weld metal and toughness are also better.
As preferably, the slag agent of taking off described above is rare earth element (RE).Adopt rare earth element can purify crystal boundary as taking off the slag agent, crystal grain thinning more be conducive to improve the intensity of weld seam, and it is effective to take off slag, and the face of weld that takes off behind the slag is smooth, does not need to adopt in addition other operation to take off slag and processes.Further preferred, described rare earth element (RE) is one or more mixing in cerium (Ce), lanthanum (La), praseodymium (Pr), neodymium (Nd), the scandium (Sc).Because the chemical property of Ce and La rare earth element is the most active, as preferably, described rare earth element is mishmetal, the percent by weight of Ce is 30%~50% in the mishmetal, the percent by weight of La is 10%~40%, the percent by weight of Nd is that the percent by weight of 10%~15%, Pr is 5~10%, and surplus is inevitable impurity.The present invention adopts the mishmetal of this composition more to be conducive to improve mechanical strength and the toughness of weld metal.
The filling rate of above-mentioned flux-cored wire of the present invention is different from the filling rate of the flux-cored wire of this area routine, the filling rate of conventional flux-cored wire is generally about 20%, if the filling rate of conventional flux-cored wire is too high, can cause the poor stability when welding, also can cause corrosion resistance and the mechanical properties decrease of weld metal.And the present invention is by improving, and makes to cooperate more rationally between the medicine core among component, increases the filling rate of flux-cored wire of the present invention, increases the intensity that filling rate can strengthen solder joint, improve the efficient of welding, and the pitting corrosion resistance of weld metal zone is stronger.As preferably, described filling rate is 32.5%~36%.In in above-mentioned preferable range, the stability in the time of can also guaranteeing to weld in the time of the properties of increase weld metal zone, the stabilising arc effect is also better, and the flux-cored wire burning is more stable.
The above-mentioned a kind of metal powder type stainless flux-cored wire of the present invention, the present invention selects the stainless steel steel as the crust of flux-cored wire, can be good at being combined with medicine core described above of the present invention, has synergy, make the impurity of weld metal zone still less, also be conducive to regulate being made into of deposited metal composition after the built-up welding, the loss of the composition of not avoided when also having remedied because of welding, stainless steel belt described above can adopt the stainless steel belt of this area routine.As preferably, stainless steel belt described above is 304L stainless steel belt or 308L stainless steel belt.Select the stainless steel belt in the preferable range more effectively to combine in medicine core of the present invention, play synergy, improve the performance of weld metal; Simultaneously, also help mechanical property and the corrosion resistance that improves the weld metal after welding.
As preferably, the thickness of stainless steel belt described above is 0.4mm~0.7mm; The width of described steel band is 8mm~12mm.Select above-mentioned stainless steel belt more to be conducive to the actual production operation, equally can be more effective in conjunction with medicine core of the present invention, make the flux-cored wire quality of making better.
Above-mentioned a kind of metal powder type stainless flux-cored wire of the present invention can adopt the conventional method of this area to prepare.As adopt following methods to make metal powder type stainless flux-cored wire of the present invention: to be pressed into stainless steel belt U-shaped by forming machine, then above-mentioned medicine core of the present invention is filled in the U-shaped groove, making filling rate is in 30%~40%, again U-shaped channel opening place is healed up and form the O type, the medicine core is wrapped in wherein, again by wire drawing machine, by road drawing, tube reducing, make diameter between 0.8mm~4.0mm, obtain the metal powder type stainless flux-cored wire.
In sum, the present invention has the following advantages:
1. a kind of metal powder type stainless flux-cored wire of the present invention, compatibility is reasonable between each composition of medicine core, synergy is better between composition, and the weld metal that flux-cored wire is used for after the welding has good toughness, the high more excellent mechanical property of intensity, and fruit is good to have corrosion resistance.
2. a kind of metal powder type stainless flux-cored wire of the present invention, have when being used for welding that deposition rate is fast and flue dust is less, welding stability is higher, flameholding, have advantages of splash little, improved the performance of practical operation, large, the large problem of splashing of flue dust when having improved flux-cored wire of the prior art and welding soon because of deposition rate.
3. a kind of metal powder type stainless flux-cored wire of the present invention, the filling rate of medicine core is 30%~40%, be different from common flux-cored wire, when existing common flux-cored wire filling rate reaches scope of the present invention, poor effect during welding, combustion instability, the stabilising arc weak effect, and the intensity of weld metal does not reach requirement yet, and adopts the filling rate of flux-cored wire of the present invention higher, can strengthen the intensity of solder joint, improve the efficient of welding, and can make the pitting corrosion resistance of weld metal zone stronger, the arc burning in the time of can guaranteeing to weld simultaneously is stable, and stabilising arc is effective.
4. after adopting metal powder type stainless flux-cored wire welding of the present invention, weld seam has light, moulding is attractive in appearance, need not the operations such as follow-up pickling, polishing, polishing, has simplified actual production process, more is conducive to suitability for industrialized production.
The specific embodiment
Below by specific embodiment, technical scheme of the present invention is described in further detail, but the present invention is not limited to these embodiment.
Selecting thickness in following examples is 0.4mm~0.7mm; Width is the stainless steel belt of 8mm~12mm; The all material of the core of medicine described in following examples was 50~150 mesh sieves.
Embodiment 1
The medicine core of selecting forms by following composition weight portion:
Chromium powder: 15%; Nickel powder: 10%; Molybdenum powder: 0.5%; Manganese powder: 0.2%; Arc stabilizer: 1.0%; Surplus is iron powder; Described arc stabilizer is potassium fluoride, with above-mentioned each selected powder material put into mix in the mixer for subsequent use;
Selecting width is 12mm, and thickness is the 308L stainless steel belt of 0.4mm, as the crust of flux-cored wire of the present invention, after the stainless steel belt rust cleaning that is about to choose, the oil removing, is pressed into U-shaped by forming machine; Then above-mentioned medicine core is filled in the U-lag, making filling rate is 32.5%, again U-shaped channel opening place is healed up and make the O type that forms, thereby the medicine core is wrapped in wherein, pass through again wire drawing machine, by road drawing, tube reducing, making at last diameter is 1.0mm, namely obtains metal powder type stainless flux-cored wire of the present invention.
Embodiment 2
The medicine core of selecting forms by following composition weight portion:
Chromium powder: 25%; Nickel powder: 10%; Molybdenum powder: 0.2%; Manganese powder: 0.6%; Arc stabilizer: 3.0%; Take off the slag agent: rare earth element (RE); Surplus is iron powder; Also comprise 0.2% chromium nitride powder, described arc stabilizer is aluminium powder, and described to take off the slag agent be rare earth element (RE), and described rare earth element (RE) is a kind of in cerium, lanthanum, praseodymium, neodymium, the scandium; The adding of described chromium nitride is conducive to act synergistically with taking off slag agent aluminium powder, makes to form the stable slag agent of taking off, and also is conducive to make intensity and the toughness of improving weld seam; Above-mentioned each selected powder material put into to mix in the mixer together obtain medicine core of the present invention, for subsequent use;
Selecting width is 8mm, and thickness is the 308L stainless steel belt of 0.7mm, as the crust of flux-cored wire of the present invention, after the stainless steel belt rust cleaning that is about to choose, the oil removing, is pressed into U-shaped by forming machine; Then the medicine core after above-mentioned the mixing is filled in the U-lag, making filling rate is 40%, again U-shaped channel opening place is healed up and make the O type that forms, thereby the medicine core is wrapped in wherein, pass through again wire drawing machine, by road drawing, tube reducing, making at last diameter is 1.4mm, namely obtains metal powder type stainless flux-cored wire of the present invention.
Embodiment 3
The medicine core of selecting forms by following composition weight portion:
Chromium powder: 22%; Nickel powder: 15%; Molybdenum powder: 0.1%; Manganese powder: 0.4%; Arc stabilizer: 2.0%; Take off the slag agent: 0.5%; Surplus is iron powder; Described arc stabilizer is manganese-silicon, and described to take off the slag agent be rare earth element (RE), and described rare earth element (RE) is a kind of in cerium, lanthanum, praseodymium, neodymium, the scandium; Above-mentioned each selected powder material put into to mix in the mixer together obtain medicine core of the present invention, for subsequent use;
Selecting width is 8mm, and thickness is the 308L stainless steel belt of 0.7mm, as the crust of flux-cored wire of the present invention, after the stainless steel belt rust cleaning that is about to choose, the oil removing, is pressed into U-shaped by forming machine; Then the medicine core after above-mentioned the mixing is filled in the U-lag, making filling rate is 40%, again U-shaped channel opening place is healed up and make the O type that forms, thereby the medicine core is wrapped in wherein, pass through again wire drawing machine, by road drawing, tube reducing, making at last diameter is 1.4mm, namely obtains metal powder type stainless flux-cored wire of the present invention.
Embodiment 4
The medicine core of selecting forms by following composition weight portion:
Chromium powder: 18%; Nickel powder: 8.0%; Molybdenum powder: 0.8%; Manganese powder: 0.8%; Arc stabilizer: 5.0%; Take off the slag agent: 0.8%; Surplus is iron powder; Described arc stabilizer is potassium fluoride; It is described that to take off the slag agent be rare earth element (RE), described rare earth element (RE) is mishmetal, the percent by weight of Ce is 30%~50% in the mishmetal, the percent by weight of La is 10%~40%, the percent by weight of Nd is 10%~15%, the percent by weight of Pr is 5~10%, and surplus is inevitable impurity; Above-mentioned each selected powder material put into to mix in the mixer together obtain medicine core of the present invention, for subsequent use;
Selecting width is 10mm, and thickness is the 304L stainless steel belt of 0.5mm, as the crust of flux-cored wire of the present invention, after the stainless steel belt rust cleaning that is about to choose, the oil removing, is pressed into U-shaped by forming machine; Then the medicine core after above-mentioned the mixing is filled in the U-lag, making filling rate is 35%, again U-shaped channel opening place is healed up and make the O type that forms, thereby the medicine core is wrapped in wherein, pass through again wire drawing machine, by road drawing, tube reducing, making at last diameter is 2.0mm, namely obtains metal powder type stainless flux-cored wire of the present invention.
Embodiment 5
The medicine core of selecting forms by following composition weight portion:
Chromium powder: 20%; Nickel powder: 5.0%; Molybdenum powder: 0.4%; Manganese powder: 0.5%; Arc stabilizer: 2.5%; Take off the slag agent: 1.0%; Surplus is iron powder; Described arc stabilizer is manganese-silicon and prodan, and both weight ratios are 1: 1; It is described that to take off the slag agent be rare earth element (RE), described rare earth element (RE) is mishmetal, the percent by weight of C e is 30%~50% in the mishmetal, the percent by weight of La is 10%~40%, the percent by weight of Nd is 10%~15%, the percent by weight of Pr is 5~10%, and surplus is inevitable impurity; Above-mentioned each selected powder material put into to mix in the mixer together obtain medicine core of the present invention, for subsequent use;
Selecting width is 10mm, and thickness is the 308L stainless steel belt of 0.5mm, as the crust of flux-cored wire of the present invention, after the stainless steel belt rust cleaning that is about to choose, the oil removing, is pressed into U-shaped by forming machine; Then the medicine core after above-mentioned the mixing is filled in the U-lag, making filling rate is 30%, again U-shaped channel opening place is healed up and make the O type that forms, thereby the medicine core is wrapped in wherein, pass through again wire drawing machine, by road drawing, tube reducing, making at last diameter is 1.5mm, namely obtains metal powder type stainless flux-cored wire of the present invention.
Embodiment 6
The medicine core of selecting forms by following composition weight portion:
Chromium powder: 23%; Nickel powder: 12%; Molybdenum powder: 0.3%; Manganese powder: 0.7%; Arc stabilizer: 2.0%; Take off the slag agent: 0.6%; Surplus is iron powder; Described arc stabilizer is manganese-silicon; It is described that to take off the slag agent be rare earth element (RE), described rare earth element (RE) is mishmetal, the percent by weight of Ce is 30%~50% in the mishmetal, the percent by weight of La is 10%~40%, the percent by weight of Nd is 10%~15%, the percent by weight of Pr is 5~10%, and surplus is inevitable impurity; Above-mentioned each selected powder material put into to mix in the mixer together obtain medicine core of the present invention, for subsequent use;
Selecting width is 10mm, and thickness is the 308L stainless steel belt of 0.5mm, as the crust of flux-cored wire of the present invention, after the stainless steel belt rust cleaning that is about to choose, the oil removing, is pressed into U-shaped by forming machine; Then the medicine core after above-mentioned the mixing is filled in the U-lag, making filling rate is 34.5%, again U-shaped channel opening place is healed up and make the O type that forms, thereby the medicine core is wrapped in wherein, pass through again wire drawing machine, by road drawing, tube reducing, making at last diameter is 1.5mm, namely obtains metal powder type stainless flux-cored wire of the present invention.
Embodiment 7
The medicine core of selecting forms by following composition weight portion:
Chromium powder: 17%; Nickel powder: 11%; Molybdenum powder: 0.7%; Manganese powder: 0.3%; Arc stabilizer: 4.0%; Take off the slag agent: 0.4%; Surplus is iron powder; Also comprise 0.1% chromium nitride powder; Described arc stabilizer is aluminium powder; It is described that to take off the slag agent be rare earth element (RE), described rare earth element (RE) is mishmetal, the percent by weight of Ce is 30%~50% in the mishmetal, the percent by weight of La is 10%~40%, the percent by weight of Nd is 10%~15%, the percent by weight of Pr is 5~10%, and surplus is inevitable impurity; Above-mentioned each selected powder material put into to mix in the mixer together obtain medicine core of the present invention, for subsequent use;
Selecting width is 10mm, and thickness is the 308L stainless steel belt of 0.5mm, as the crust of flux-cored wire of the present invention, after the stainless steel belt rust cleaning that is about to choose, the oil removing, is pressed into U-shaped by forming machine; Then the medicine core after above-mentioned the mixing is filled in the U-lag, making filling rate is 36%, again U-shaped channel opening place is healed up and make the O type that forms, thereby the medicine core is wrapped in wherein, pass through again wire drawing machine, by road drawing, tube reducing, making at last diameter is 1.6mm, namely obtains metal powder type stainless flux-cored wire of the present invention.
Embodiment 8
The medicine core of selecting forms by following composition weight portion:
Chromium powder: 19.5%; Nickel powder: 9.45%; Molybdenum powder: 0.47%; Manganese powder: 0.58%; Arc stabilizer: 2.0%; Surplus is iron powder; Described arc stabilizer is prodan, with above-mentioned each selected powder material put into mix in the mixer for subsequent use;
Selecting width is 12mm, and thickness is the 308L stainless steel belt of 0.4mm, as the crust of flux-cored wire of the present invention, after the stainless steel belt rust cleaning that is about to choose, the oil removing, is pressed into U-shaped by forming machine; Then above-mentioned medicine core is filled in the U-lag, making filling rate is 34%, U-shaped channel opening place is healed up to make the O type that forms again, thereby the medicine core is wrapped in wherein, again by wire drawing machine, by road drawing, tube reducing, making at last diameter is 1.0mm, namely obtains metal powder type stainless flux-cored wire of the present invention.
Embodiment 9
The medicine core of selecting forms by following composition weight portion:
Chromium powder: 21%; Nickel powder: 8%; Molybdenum powder: 0.45%; Manganese powder: 0.6%; Arc stabilizer: 1.8%; Surplus is iron powder; Also comprise 0.1% chromium nitride powder, described arc stabilizer is aluminium powder, with above-mentioned each selected powder material put into mix in the mixer for subsequent use;
Selecting width is 12mm, and thickness is the 304L stainless steel belt of 0.6mm, as the crust of flux-cored wire of the present invention, after the stainless steel belt rust cleaning that is about to choose, the oil removing, is pressed into U-shaped by forming machine; Then above-mentioned medicine core is filled in the U-lag, making filling rate is 33%, U-shaped channel opening place is healed up to make the O type that forms again, thereby the medicine core is wrapped in wherein, again by wire drawing machine, by road drawing, tube reducing, making at last diameter is 1.0mm, namely obtains metal powder type stainless flux-cored wire of the present invention.
Choose at random the metal powder type stainless flux-cored wire in above-described embodiment, at 100%CO 2Weld under the gas protection, welding current 150~180A welds under the condition of weldingvoltage 25~35V, and speed of welding is 0.8m/min, and throughput is 12L/min.Data in the following table 1 are to welding technological test result.
Table 1:
Data in the following table 2 are to select at random the flux-cored wire in the above embodiment of the present invention to weld, and are used for the soldering stainless steel material, when the welding job temperature is lower than 300 ℃, and the result that the leading indicator of welding rear weld seam is tested.
Table 2:
Tension test in the above-mentioned table 2 is carried out according to national GB/T-228-2002 standard; Described impact test be with each test specimen under-20 ℃ temperature conditions, carry out at least 3 tests, get its mean value, if the mean value maximum is no more than 27J, then the result of the test master is poor or defective; Described pitting test is to carry out according to JISG0578, test specimen is concentrated carried out pitting test, and corrosion loss is evaluated; If corrosion loss is at 0.1g/mm 2Below, then be judged to be; If corrosion loss is at 0.1g/mm 2~0.2g/mm 2As between, then be relatively poor; If corrosion loss 〉=0.2g/mm 2, it is poor then to be decided to be.
Data from above-mentioned table are passable, find out and adopt metal powder type stainless flux-cored wire of the present invention, not only have excellent decay resistance and impact flexibility, also have simultaneously splendid welding technological properties and full position welding adaptability, can be applied in the industrial production preferably.
Specific embodiment described in the present invention only is to the explanation for example of the present invention's spirit.Those skilled in the art can make various modifications or replenish or adopt similar mode to substitute described specific embodiment, but can't depart from spirit of the present invention or surmount the defined scope of appended claims.
Although the present invention has been made a detailed description and has quoted as proof some specific embodiments, to those skilled in the art, only otherwise it is obvious leaving that the spirit and scope of the present invention can make various changes or revise.

Claims (8)

1. metal powder type stainless flux-cored wire is characterized in that: adopt stainless steel belt as crust, and inner charge core, filling rate is 30%~40%, makes flux-cored wire; Described medicine core comprises the percetage by weight of following composition:
Chromium powder: 15%~25%; Nickel powder: 5.0%~15%; Molybdenum powder: 0.1%~0.8%; Manganese powder: 0.2%~0.8%; Arc stabilizer: 0.5%~4.0%; Take off the slag agent: 0.5%~3.0%; Surplus is iron powder; It is described that to take off the slag agent be rare earth element (RE).
2. a kind of metal powder type stainless flux-cored wire according to claim 1, it is characterized in that: described arc stabilizer is one or more in fluoride, aluminium powder, the manganese-silicon.
3. a kind of metal powder type stainless flux-cored wire according to claim 1 is characterized in that: described rare earth element (RE) is one or more mixing in cerium, lanthanum, praseodymium, neodymium, the scandium.
4. a kind of metal powder type stainless flux-cored wire according to claim 1, it is characterized in that: described rare earth element (RE) is mishmetal, the percent by weight of Ce is 30%~50% in the mishmetal, the percent by weight of La is 10%~40%, the percent by weight of Nd is 10%~15%, the percent by weight of Pr is 5~10%, and surplus is inevitable impurity.
5. the described a kind of metal powder type stainless flux-cored wire of any one according to claim 1-4, it is characterized in that: described filling rate is 32.5%~36%.
6. a kind of metal powder type stainless flux-cored wire according to claim 1, it is characterized in that: described stainless steel belt is 308L stainless steel belt or 304L stainless steel belt.
7. a kind of metal powder type stainless flux-cored wire according to claim 1, it is characterized in that: the thickness of described stainless steel belt is 0.4mm~0.7mm; The width of described steel band is 8mm~12mm.
8. a kind of metal powder type stainless flux-cored wire according to claim 5, it is characterized in that: the thickness of described stainless steel belt is 0.4mm~0.7mm; The width of described steel band is 8mm~12mm.
CN 201110214709 2011-07-29 2011-07-29 Metal-powder type stainless steel flux-cored wire Expired - Fee Related CN102267023B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 201110214709 CN102267023B (en) 2011-07-29 2011-07-29 Metal-powder type stainless steel flux-cored wire

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 201110214709 CN102267023B (en) 2011-07-29 2011-07-29 Metal-powder type stainless steel flux-cored wire

Publications (2)

Publication Number Publication Date
CN102267023A CN102267023A (en) 2011-12-07
CN102267023B true CN102267023B (en) 2013-04-24

Family

ID=45049586

Family Applications (1)

Application Number Title Priority Date Filing Date
CN 201110214709 Expired - Fee Related CN102267023B (en) 2011-07-29 2011-07-29 Metal-powder type stainless steel flux-cored wire

Country Status (1)

Country Link
CN (1) CN102267023B (en)

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103551758B (en) * 2013-10-11 2015-08-05 四川大西洋焊接材料股份有限公司 A kind of nuclear power engineering high-toughness metal powder type flux-cored wire
CN104690447B (en) * 2015-02-12 2016-08-24 西安理工大学 0Cr13 ferritic stainless steel self-protection flux-cored wire and preparation method thereof
CN104646859B (en) * 2015-02-12 2017-05-03 西安理工大学 Self-protection flux-cored wire for 2205 duplex stainless steel and preparation method thereof
CN104858572B (en) * 2015-03-31 2017-11-21 上海焊接器材有限公司 A kind of metal-cored flux-cored wire of high chromium content ferrite stainless steel
CN106514036A (en) * 2015-09-14 2017-03-22 江苏立新焊接材料有限公司 Flux-core welding wire for shipping and ocean engineering alloy steel matching welding and preparation method
CN106141506A (en) * 2016-08-05 2016-11-23 天长市通联焊业有限公司 A kind of high-hardness stainless steel flux-cored wire
CN107725352A (en) * 2016-10-17 2018-02-23 武汉春禾科技有限公司 A kind of plunger
CN107350658A (en) * 2017-07-12 2017-11-17 西安理工大学 PH13 8Mo stainless steels metal mold welding wire and preparation method thereof
CN107378310A (en) * 2017-08-19 2017-11-24 芜湖鼎瀚再制造技术有限公司 Continuous Casting Rolls are remanufactured with submerged-arc welding flux cored wire and its welding procedure
CN107900552B (en) * 2017-10-20 2020-07-28 西安理工大学 Metal flux-cored wire for precipitation hardening stainless steel and preparation method thereof
CN107649798B (en) * 2017-10-20 2020-08-18 西安理工大学 Metal flux-cored wire for 25Cr2Ni4MoV steel and preparation method thereof
CN107900556A (en) * 2017-12-25 2018-04-13 昆山京群焊材科技有限公司 A kind of austenitic stainless steel self-protection flux-cored wire
CN108620766A (en) * 2018-04-11 2018-10-09 丹阳市华龙特钢有限公司 A kind of high-intensity and high-tenacity stainless steel arc welding flux cored wire and preparation method thereof
CN108544132A (en) * 2018-07-12 2018-09-18 淮北卓颂建筑工程有限公司 A kind of preparation method of high abrasion stainless steel welding stick
CN108941974A (en) * 2018-09-11 2018-12-07 江苏思迪彼特新材料科技有限公司 A kind of corrosion-resistant stainless steel arc welding flux cored wire and preparation method thereof
CN108788519B (en) * 2018-09-11 2020-11-06 江苏思迪彼特新材料科技有限公司 Preparation process and application of high-strength stainless steel electric arc welding flux-cored wire
CN109926751B (en) * 2019-04-18 2021-07-02 北京工业大学 314 heat-resistant stainless steel metal core welding wire

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1209372A (en) * 1998-07-14 1999-03-03 王玉彬 Special flux-cored wirecord for repairing continuous-casting roller
CN1820890A (en) * 2006-04-06 2006-08-23 北京工业大学 Submerged-arc welding metal core weldingwire for austenite stainless steel
CN101596655A (en) * 2008-06-03 2009-12-09 株式会社神户制钢所 Flux-cored wire for stainless steel

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH10286690A (en) * 1997-04-15 1998-10-27 Kobe Steel Ltd Covered electrode for austenite base stainless steel

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1209372A (en) * 1998-07-14 1999-03-03 王玉彬 Special flux-cored wirecord for repairing continuous-casting roller
CN1820890A (en) * 2006-04-06 2006-08-23 北京工业大学 Submerged-arc welding metal core weldingwire for austenite stainless steel
CN101596655A (en) * 2008-06-03 2009-12-09 株式会社神户制钢所 Flux-cored wire for stainless steel

Also Published As

Publication number Publication date
CN102267023A (en) 2011-12-07

Similar Documents

Publication Publication Date Title
CN102267023B (en) Metal-powder type stainless steel flux-cored wire
CN103042321B (en) Metal powder-cored type nitrogen austenite stainless steel flux-cored wire
CN106670682B (en) A kind of 316 (L) stainless flux-cored wires for plate sheet welding
CN104148824B (en) A kind of high tenacity flux-cored wire for electrogas arc welding
CN106736032B (en) A kind of 309 (L) stainless flux-cored wires for plate sheet welding
CN105728989B (en) High-toughness atmosphere corrosion resistance flux-cored solder wire and preparation method thereof
CN101966628A (en) Chemical powder components of 2507 type super double-phase stainless steel flux-cored wire
CN104889608B (en) A kind of structural steel welding alkaline flux-cored wire
CN107081537B (en) A kind of engineering machinery High Speed Welding metal powder-cored wire and its welding method
CN106181115B (en) Low spatter 9Ni steel nickel-based welding electrodes
CN105127613A (en) Flux-cored wire for welding Q420 steel and preparation method thereof
CN106670678B (en) A kind of 347 stainless flux-cored wires for plate sheet welding
CN110524136A (en) A kind of heat treatable ultralow temperature cracking resistance superhigh tenacity austenite stainless steel-made welding rod
JP5869066B2 (en) Bond flux for multi-electrode single-sided submerged arc welding
CN106181122B (en) A kind of seamless submerged arc flux-cored wire for yield strength 550MPa steel
CN103659049B (en) A kind of nickelic, chromium weld penetration flux-cored wire and preparation method
CN106312370B (en) A kind of 308L stainless flux-cored wires for plate sheet welding
JP6037781B2 (en) Bond flux for multi-electrode single-sided submerged arc welding
CN110153586B (en) Ultralow-hydrogen moisture-absorption-resistant welding electrode with seamless flux-cored wire as core wire and preparation method thereof
CN105750762A (en) All-position welding basic flux-cored wire
JP5473371B2 (en) Coated arc welding rod for duplex stainless steel welding to refine solidified crystal grains
CN104772582A (en) High-strength low-hydrogen self-shielded flux-core wire applicable to petroleum pipeline
JP2011206828A (en) Flux-cored welding wire for fine diameter wire multiple electrode submerged arc welding
CN106392362A (en) Ultra-low-hydrogen type acidic flux-cored wire
TWI558492B (en) High strength and low temperature resistant TiO 2 Department of CO 2 Gas protection Low hydrogen type flux cored wire

Legal Events

Date Code Title Description
PB01 Publication
C06 Publication
SE01 Entry into force of request for substantive examination
C10 Entry into substantive examination
GR01 Patent grant
C14 Grant of patent or utility model
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20130424

Termination date: 20140729

EXPY Termination of patent right or utility model