CN107322181A - Nonmagnetic steel 20Mn23Al self-protection flux-cored wires and preparation method thereof - Google Patents
Nonmagnetic steel 20Mn23Al self-protection flux-cored wires and preparation method thereof Download PDFInfo
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- CN107322181A CN107322181A CN201710641124.1A CN201710641124A CN107322181A CN 107322181 A CN107322181 A CN 107322181A CN 201710641124 A CN201710641124 A CN 201710641124A CN 107322181 A CN107322181 A CN 107322181A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
- B23K35/22—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by the composition or nature of the material
- B23K35/24—Selection of soldering or welding materials proper
- B23K35/30—Selection of soldering or welding materials proper with the principal constituent melting at less than 1550 degrees C
- B23K35/3053—Fe as the principal constituent
- B23K35/308—Fe as the principal constituent with Cr as next major constituent
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- 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
- B23K35/368—Selection of non-metallic compositions of core materials either alone or conjoint with selection of soldering or welding materials
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
- B23K35/40—Making wire or rods for soldering or welding
- B23K35/406—Filled tubular wire or rods
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Abstract
The invention discloses nonmagnetic steel 20Mn23Al self-protection flux-cored wires, including medicine core and crust, medicine core is composed of the following components：Chromium powder 18% 28%, nickel powder 2% 8%, molybdenum powder 1.5% 3.5%, manganese powder 2.5% 10%, ferrosilicon powder 0.5% 1.5%, magnalium 2% 8%, ferro-niobium 0.5% 1.5%, ferrotianium 0.5% 1%, barium fluoride 10% 17%, magnesia 5% 15%, aluminum oxide 1% 5%, cerium oxide powder 0.5% 1.5%, quartz sand 1% 3.5%, rutile 18% 26%, zircon sand 2% 8%, lithium carbonate 1% 3%, calcium carbonate 0.5% 3%, brown iron oxide 0.5% 5%；For 20Mn23Al welding, additional protective gas is not required to, is obtained with high-tensile and corrosion proof welding point；Welding wire preparation method is simple, is convenient for large-scale mass production.
Description
Technical field
The invention belongs to Metal Material Welding technical field, and in particular to nonmagnetic steel 20Mn23Al self-shield fluxed-cored weldings
Silk, the invention further relates to the preparation method of the flux-cored wire.
Background technology
Nonmagnetic steel belongs to Fe-Mn-Al-C series austenitic metal materials, and 20Mn23A1 is used as the special low magnetic steel of transformer
Plate, is mainly used in transformer core pull bar, folder, oil tank wall, flange etc. and requires the part without magnetic, because its magnetic conductivity is low and electric
Resistance rate is high.Eddy-current loss in magnetic field is minimum, so that the performance of transformer is improved, therefore this ferrimanganic aluminium system low magnetic steel
It is used widely in national transformer manufacturing factory.And good mechanical performance, in processing and manufacturing cut, weld, drilling, it is curved
Songs etc. are same with common iron easy, compared with stainless steel, not only reduce material cost, enhance product performance, can also save and add
Expenses of labour is used.The wlding for nonmagnetic steel 20Mn23Al develops less at this stage, therefore develops a kind of nonmagnetic steel 20Mn23Al's hereby
Self-protection flux-cored wire.
Self-protection flux-cored wire under conditions of the protection of no adscititious gases due to being welded.So will in medicine core
A certain amount of solder flux is added, the slag of flux-cored wire itself generation is relied primarily on, gas is protected to welding pool, is welded simultaneously
Also need to add a certain amount of deoxidier in agent, such as ferrosilicon, ferromanganese, magnalium component remove the objectionable impurities oxygen element in molten bath.
Needed in solder flux used in self-protection flux-cored wire containing slag former, gas-forming agent, deoxidier, three kinds of compositions, from slag making, gas making takes off
Oxygen, three levels are protected to molten bath, can be only achieved preferable protecting effect.
The content of the invention
It is an object of the invention to provide nonmagnetic steel 20Mn23Al self-protection flux-cored wires, the feelings for being not added with protective gas are realized
To nonmagnetic steel 20Mn23Al weldings under condition, and obtained welding joint mechanical property is excellent.
It is a further object to provide the preparation method of nonmagnetic steel 20Mn23Al self-protection flux-cored wires.
The technical solution adopted in the present invention is, nonmagnetic steel 20Mn23Al self-protection flux-cored wires, including medicine core and outer
Skin, wherein medicine core are composed of the following components by mass percentage：Chromium powder 18%-28%, nickel powder 2%-8%, molybdenum powder 1.5%-
3.5%, manganese powder 2.5%-10%, ferrosilicon powder 0.5%-1.5%, al-mg powder 2%-8%, ferro-niobium powder 0.5%-1.5%, titanium-iron powder
0.5%-1%, barium fluoride powder 10%-17%, magnesia powder 5%-15%, alumina powder 1%-5%, cerium oxide powder 0.5%-
1.5%, silica flour 1%-3.5%, golden red stone flour 18%-26%, zircon flour 2%-8%, lithium carbonate powder 1%-3%, carbonic acid
Calcium powder 0.5%-3%, brown iron oxide 0.5%-5%, above constituent mass percentage sum are 100%.
The features of the present invention is also resided in：
Crust is 316 stainless steel belts.
The loading of the flux-cored wire is controlled in 18%-23%.
Second technical scheme of the present invention be, the preparation side of nonmagnetic steel 20Mn23Al self-protection flux-cored wires
Method, is comprised the following steps that：
Step 1：Weigh chromium powder 18%-28%, nickel powder 2%-8%, molybdenum powder 1.5%-3.5% respectively by mass percentage,
Manganese powder 2.5%-10%, ferrosilicon powder 0.5%-1.5%, magnesium aluminium powder 2%-8%, ferro-niobium powder 0.5%-1.5%, titanium-iron powder 0.5%-
1%, barium fluoride powder 10%-17%, magnesia powder 5%-15%, alumina powder 1%-5%, cerium oxide powder 0.5%-1.5%, stone
English powder 1%-3.5%, golden red stone flour 18%-26%, zircon flour 2%-8%, lithium carbonate powder 1%-3%, Paris white
0.5%-3%, brown iron oxide 0.5%-5%, above constituent mass percentage sum are 100%；
Step 2：Barium fluoride powder, magnesia powder, alumina powder, silica flour, brown iron oxide, the lithium carbonate that step 1 is weighed
Powder and Paris white mixing, add sodium silicate binder and are well mixed, be then placed within heating furnace and sinter, sintered thereto
Grinding, sieving, obtain mixed powder A after finishing；
Step 3：Chromium powder, nickel powder, molybdenum powder, manganese powder, ferrosilicon powder, magnesium aluminium powder, ferro-niobium powder, titanium-iron powder, the oxygen that step 1 is weighed
Change cerium powder, golden red stone flour, zircon flour to be well mixed with the mixed powder A that step 2 is obtained, be put into stove and dry, obtain medicine core
Powder；
Step 4：The medicine core powder that step 3 is prepared is wrapped in by flux-cored wire producing machine by 316 stainless steel belts
It is interior, and drawing is carried out, obtain flux-cored wire；
Step 5：The flux-cored wire that step 4 is obtained is stretched using spiral filament forming machine, disk into disk, pack stand-by.
In step 2：Sintering temperature is 600-750 DEG C, and sintering time is 3-4h.
In step 3：Drying temperature is 200-300 DEG C, and drying time is 2-2.5h.
In step 4：The loading of flux-cored wire is controlled in 18%-23%.
The beneficial effects of the invention are as follows (1) is used for nonmagnetic steel 20Mn23Al welding, and additional protection gas is not required to during welding
Body, can be achieved self-shield welding；Welding point has compared with high-tensile and excellent corrosion resistance；With good welding procedure
Property, spatter is few, and weld fumes is few；Suitable for automatic welding device, with higher production efficiency；(2) medicine core of the present invention
Welding wire preparation method is simple, easy to operate, is convenient for large-scale mass production.
Embodiment
With reference to embodiment, the present invention is described in detail.
Nonmagnetic steel 20Mn23Al self-protection flux-cored wires of the present invention, including medicine core and crust, wherein medicine core press quality hundred
Divide than composed of the following components：Chromium powder 18%-28%, nickel powder 2%-8%, molybdenum powder 1.5%-3.5%, manganese powder 2.5%-10%,
Ferrosilicon powder 0.5%-1.5%, al-mg powder 2%-8%, ferro-niobium powder 0.5%-1.5%, titanium-iron powder 0.5%-1%, barium fluoride powder
10%-17%, magnesia powder 5%-15%, alumina powder 1%-5%, cerium oxide powder 0.5%-1.5%, silica flour 1%-
3.5%, golden red stone flour 18%-26%, zircon flour 2%-8%, lithium carbonate powder 1%-3%, Paris white 0.5%-3%, oxygen
Change iron powder 0.5%-5%, above constituent mass percentage sum is 100%.
The effect of each component and function are as follows in the flux-cored wire：
Chromium is the strong element for forming simultaneously stable austenite, reduces austenitic area.With the increase of chromium content, some metals
Between phase (such as δ phases) formability increase, Cr elements also have significantly improves the corrosion proof ability of weld metal, make weld seam
Corrosion resistance can reach the requirement used；
Metallic nickel, also with the effect for improving welding point toughness；
Al-mg powder is easily combined with oxygen and removes the oxygen element in molten bath, protects the other components in weld seam；
Quartz, barium fluoride, rutile, aluminum oxide has the effect of slag making, slag is produced during welding molten bath is protected；
Barium fluoride is basic slag, quartz, and rutile, aluminum oxide is acid slag, and four use cooperatively, and can adjust slag
Basicity.
The preparation method of above-mentioned nonmagnetic steel 20Mn23Al self-protection flux-cored wires, is comprised the following steps that：
Step 1：Weigh chromium powder 18%-28%, nickel powder 2%-8%, molybdenum powder 1.5%-3.5% respectively by mass percentage,
Manganese powder 2.5%-10%, ferrosilicon powder 0.5%-1.5%, magnesium aluminium powder 2%-8%, ferro-niobium powder 0.5%-1.5%, titanium-iron powder 0.5%-
1%, barium fluoride powder 10%-17%, magnesia powder 5%-15%, alumina powder 1%-5%, cerium oxide powder 0.5%-1.5%, stone
English powder 1%-3.5%, golden red stone flour 18%-26%, zircon flour 2%-8%, lithium carbonate powder 1%-3%, Paris white
0.5%-3%, brown iron oxide 0.5%-5%, above constituent mass percentage sum are 100%；
Step 2：Barium fluoride powder, magnesia powder, alumina powder, silica flour, brown iron oxide, the lithium carbonate that step 1 is weighed
Powder and Paris white mixing, add sodium silicate binder and are well mixed, be then placed within 600-750 DEG C of burning in heating furnace thereto
3-4h is tied, grinding, sieving, obtain mixed powder A after sintering is finished；
Step 3：Chromium powder, nickel powder, molybdenum powder, manganese powder, ferrosilicon powder, magnesium aluminium powder, ferro-niobium powder, titanium-iron powder, the oxygen that step 1 is weighed
Change cerium powder, golden red stone flour, zircon flour to be well mixed with the mixed powder A that step 2 is obtained, be put into 200-300 DEG C of drying in stove
2-2.5h, obtains medicine core powder；
Step 4：The medicine core powder that step 3 is prepared is wrapped in by flux-cored wire producing machine by 316 stainless steel belts
Interior, the loading of flux-cored wire is controlled in 18%-23%, and carries out drawing, obtains flux-cored wire；
Step 5：The flux-cored wire that step 4 is obtained is stretched using spiral filament forming machine, disk into disk, pack stand-by.
Embodiment 1
Step 1：Chromium powder 220g, nickel powder 50g, molybdenum powder 20g, manganese powder 65g, ferrosilicon powder 5g, magnesium aluminium powder 60g, niobium are weighed respectively
Iron powder 5g, titanium-iron powder 5g, barium fluoride powder 120g, magnesia powder 80g, alumina powder 30g, cerium oxide powder 15g, silica flour 20g, gold
Red stone flour 200g, zircon flour 50g, lithium carbonate powder 20g, Paris white 15g, brown iron oxide 20g；
Step 2：Barium fluoride powder, magnesia powder, alumina powder, silica flour, brown iron oxide, the lithium carbonate that step 1 is weighed
Powder and Paris white mixing, add sodium silicate binder and are well mixed, be then placed within 600 DEG C of sintering in heating furnace thereto
3h, sintering grinds after finishing, crosses 80-120 mesh sieves, obtains mixed powder A；
Step 3：Chromium powder, nickel powder, molybdenum powder, manganese powder, ferrosilicon powder, magnesium aluminium powder, ferro-niobium powder, titanium-iron powder, the oxygen that step 1 is weighed
Change cerium powder, golden red stone flour, zircon flour to be well mixed with the mixed powder A that step 2 is obtained, be put into 200 DEG C of drying 2h in stove, obtain
To medicine core powder；
Step 4：The medicine core powder that step 3 is prepared is wrapped in by flux-cored wire producing machine by 316 stainless steel belts
Interior, the control of medicine core powder loading carries out being drawn to diameter 1.2mm 18%, obtains flux-cored wire；
Step 5：The flux-cored wire that step 4 is obtained is stretched using spiral filament forming machine, disk into disk, pack stand-by.
Nonmagnetic steel 20Mn23Al is welded with the flux-cored wire obtained by embodiment 1, using arc welding (FCAW), without additional
Protective gas, welding current is 170-190A, and weldingvoltage is 21-24V.After tested, the tensile strength of welding point is
550Mpa, yield limit is 263Mpa, and ballistic work is 31J.Performance meets nonmagnetic steel 20Mn23Al use requirements.
Embodiment 2
Step 1：Chromium powder 240g, nickel powder 60g, molybdenum powder 25g, manganese powder 70g, ferrosilicon powder 2g, magnesium aluminium powder 60g, niobium are weighed respectively
Iron powder 3g, titanium-iron powder 5g, barium fluoride powder 110g, magnesia powder 60g, alumina powder 30g, cerium oxide powder 10g, silica flour 15g, gold
Red stone flour 200g, zircon flour 50g, lithium carbonate powder 15g, Paris white 15g, brown iron oxide 30g；
Step 2：Barium fluoride powder, magnesia powder, alumina powder, silica flour, brown iron oxide, the lithium carbonate that step 1 is weighed
Powder and Paris white mixing, add sodium silicate binder and are well mixed, be then placed within 650 DEG C of sintering in heating furnace thereto
3.5h, sintering grinds after finishing, crosses 80-120 mesh sieves, obtains mixed powder A；
Step 3：Chromium powder, nickel powder, molybdenum powder, manganese powder, ferrosilicon powder, magnesium aluminium powder, ferro-niobium powder, titanium-iron powder, the oxygen that step 1 is weighed
Change cerium powder, golden red stone flour, zircon flour to be well mixed with the mixed powder A that step 2 is obtained, be put into 220 DEG C of drying 2.2h in stove,
Obtain medicine core powder；
Step 4：The medicine core powder that step 3 is prepared is wrapped in by flux-cored wire producing machine by 316 stainless steel belts
Interior, the control of medicine core powder loading carries out being drawn to diameter 1.4mm 19%, obtains flux-cored wire；
Step 5：The flux-cored wire that step 4 is obtained is stretched using spiral filament forming machine, disk into disk, pack stand-by.
Nonmagnetic steel 20Mn23Al is welded with the flux-cored wire obtained by embodiment 2, using arc welding (FCAW), without additional
Protective gas, welding current is 170-200A, and weldingvoltage is 22-25V.After tested, the tensile strength of welding point is
565Mpa, yield limit is 270Mpa, and ballistic work is 35J.Performance meets nonmagnetic steel 20Mn23Al use requirements.
Embodiment 3
Step 1：Chromium powder 260g, nickel powder 60g, molybdenum powder 30g, manganese powder 70g, ferrosilicon powder 2g, magnesium aluminium powder 40g, niobium are weighed respectively
Iron powder 3g, titanium-iron powder 10g, barium fluoride powder 130g, magnesia powder 60g, alumina powder 30g, cerium oxide powder 10g, silica flour 20g,
Golden red stone flour 220g, zircon flour 30g, lithium carbonate powder 10g, Paris white 5g, brown iron oxide 10g；
Step 2：Barium fluoride powder, magnesia powder, alumina powder, silica flour, brown iron oxide, the lithium carbonate that step 1 is weighed
Powder and Paris white mixing, add sodium silicate binder and are well mixed, be then placed within 750 DEG C of sintering in heating furnace thereto
4h, sintering grinds after finishing, crosses 80-120 mesh sieves, obtains mixed powder A；
Step 3：Chromium powder, nickel powder, molybdenum powder, manganese powder, ferrosilicon powder, magnesium aluminium powder, ferro-niobium powder, titanium-iron powder, the oxygen that step 1 is weighed
Change cerium powder, golden red stone flour, zircon flour to be well mixed with the mixed powder A that step 2 is obtained, be put into 300 DEG C of drying 2.5h in stove,
Obtain medicine core powder；
Step 4：The medicine core powder that step 3 is prepared is wrapped in by flux-cored wire producing machine by 316 stainless steel belts
Interior, the control of medicine core powder loading carries out being drawn to diameter 2.0mm 23%, obtains flux-cored wire；
Step 5：The flux-cored wire that step 4 is obtained is stretched using spiral filament forming machine, disk into disk, pack stand-by.
Nonmagnetic steel 20Mn23Al is welded with the flux-cored wire obtained by embodiment 3, using arc welding (FCAW), without additional
Protective gas, welding current is 170-190A, and weldingvoltage is 22-25V.After tested, the tensile strength of welding point is
583Mpa, yield limit is 279Mpa, and ballistic work is 32J.Performance meets nonmagnetic steel 20Mn23Al use requirements.
Embodiment 4
Step 1：Chromium powder 190g, nickel powder 30g, molybdenum powder 20g, manganese powder 85g, ferrosilicon powder 10g, magnesium aluminium powder 45g, niobium are weighed respectively
Iron powder 5g, titanium-iron powder 10g, barium fluoride powder 150g, magnesia powder 90g, alumina powder 20g, cerium oxide powder 10g, silica flour 15g,
Golden red stone flour 230g, zircon flour 40g, lithium carbonate powder 15g, Paris white 15g, brown iron oxide 20g；
Step 2：Barium fluoride powder, magnesia powder, alumina powder, silica flour, brown iron oxide, the lithium carbonate that step 1 is weighed
Powder and Paris white mixing, add sodium silicate binder and are well mixed, be then placed within 700 DEG C of sintering in heating furnace thereto
3.5h, sintering grinds after finishing, crosses 80-120 mesh sieves, obtains mixed powder A；
Step 3：Chromium powder, nickel powder, molybdenum powder, manganese powder, ferrosilicon powder, magnesium aluminium powder, ferro-niobium powder, titanium-iron powder, the oxygen that step 1 is weighed
Change cerium powder, golden red stone flour, zircon flour to be well mixed with the mixed powder A that step 2 is obtained, be put into 280 DEG C of drying 2.5h in stove,
Obtain medicine core powder；
Step 4：The medicine core powder that step 3 is prepared is wrapped in by flux-cored wire producing machine by 316 stainless steel belts
Interior, the control of medicine core powder loading carries out being drawn to diameter 1.8mm 22%, obtains flux-cored wire；
Step 5：The flux-cored wire that step 4 is obtained is stretched using spiral filament forming machine, disk into disk, pack stand-by.
Nonmagnetic steel 20Mn23Al is welded with the flux-cored wire obtained by embodiment 4, using arc welding (FCAW), without additional
Protective gas, welding current is 170-190A, and weldingvoltage is 23-25V.After tested, the tensile strength of welding point is
568Mpa, yield limit is 269Mpa, and ballistic work is 33J.Performance meets nonmagnetic steel 20Mn23Al use requirements.
Embodiment 5
Step 1：Chromium powder 220g, nickel powder 60g, molybdenum powder 10g, manganese powder 30g, ferrosilicon powder 10g, magnesium aluminium powder 60g, niobium are weighed respectively
Iron powder 10g, titanium-iron powder 10g, barium fluoride powder 150g, magnesia powder 115g, alumina powder 30g, cerium oxide powder 10g, silica flour
10g, golden red stone flour 195g, zircon flour 30g, lithium carbonate powder 20g, Paris white 20g, brown iron oxide 10g；
Step 2：Barium fluoride powder, magnesia powder, alumina powder, silica flour, brown iron oxide, the lithium carbonate that step 1 is weighed
Powder and Paris white mixing, add sodium silicate binder and are well mixed, be then placed within 700 DEG C of sintering in heating furnace thereto
3.5h, sintering grinds after finishing, crosses 80-120 mesh sieves, obtains mixed powder A；
Step 3：Chromium powder, nickel powder, molybdenum powder, manganese powder, ferrosilicon powder, magnesium aluminium powder, ferro-niobium powder, titanium-iron powder, the oxygen that step 1 is weighed
Change cerium powder, golden red stone flour, zircon flour to be well mixed with the mixed powder A that step 2 is obtained, be put into 280 DEG C of drying 2.5h in stove,
Obtain medicine core powder；
Step 4：The medicine core powder that step 3 is prepared is wrapped in by flux-cored wire producing machine by 316 stainless steel belts
Interior, the control of medicine core powder loading carries out being drawn to diameter 1.8mm 22%, obtains flux-cored wire；
Step 5：The flux-cored wire that step 4 is obtained is stretched using spiral filament forming machine, disk into disk, pack stand-by.
Nonmagnetic steel 20Mn23Al is welded with the flux-cored wire obtained by embodiment 5, using arc welding (FCAW), without protection
Gas, welding current is 170-190A, and weldingvoltage is 23-25V.After tested, the tensile strength of welding point is 556Mpa, is bent
The limit is taken for 285Mpa, ballistic work is 31J.Performance meets nonmagnetic steel 20Mn23Al use requirements.
Flux-cored wire of the present invention is used for nonmagnetic steel 20Mn23Al welding, for welding rod and solid welding wire, and welding flies
Splash few, appearance of weld is attractive in appearance, with good welding procedure；It can obtain having and be connect compared with high-tensile and corrosion proof welding
Head；Flux-cored wire is applied to automatic welding device, without additional protective gas, with higher production efficiency；Medicine core of the present invention
Welding wire preparation method is simple, easy to operate, is convenient for large-scale mass production.
Claims (7)
1. nonmagnetic steel 20Mn23Al self-protection flux-cored wires, it is characterised in that including medicine core and crust, wherein medicine core presses quality
Percentage is composed of the following components：Chromium powder 18%-28%, nickel powder 2%-8%, molybdenum powder 1.5%-3.5%, manganese powder 2.5%-
10%, ferrosilicon powder 0.5%-1.5%, al-mg powder 2%-8%, ferro-niobium powder 0.5%-1.5%, titanium-iron powder 0.5%-1%, barium fluoride
Powder 10%-17%, magnesia powder 5%-15%, alumina powder 1%-5%, cerium oxide powder 0.5%-1.5%, silica flour 1%-
3.5%, golden red stone flour 18%-26%, zircon flour 2%-8%, lithium carbonate powder 1%-3%, Paris white 0.5%-3%, oxygen
Change iron powder 0.5%-5%, above constituent mass percentage sum is 100%.
2. nonmagnetic steel 20Mn23Al self-protection flux-cored wires according to claim 1, it is characterised in that crust is 316
Stainless steel belt.
3. nonmagnetic steel 20Mn23Al self-protection flux-cored wires according to claim 1, it is characterised in that the flux-cored wire
Loading control in 18%-23%.
4. the preparation method of nonmagnetic steel 20Mn23Al self-protection flux-cored wires, it is characterised in that comprise the following steps that：
Step 1：Weigh chromium powder 18%-28%, nickel powder 2%-8%, molybdenum powder 1.5%-3.5%, manganese powder respectively by mass percentage
2.5%-10%, ferrosilicon powder 0.5%-1.5%, magnesium aluminium powder 2%-8%, ferro-niobium powder 0.5%-1.5%, titanium-iron powder 0.5%-1%,
Barium fluoride powder 10%-17%, magnesia powder 5%-15%, alumina powder 1%-5%, cerium oxide powder 0.5%-1.5%, silica flour
1%-3.5%, golden red stone flour 18%-26%, zircon flour 2%-8%, lithium carbonate powder 1%-3%, Paris white 0.5%-
3%, brown iron oxide 0.5%-5%, above constituent mass percentage sum are 100%；
Step 2：Barium fluoride powder that step 1 is weighed, magnesia powder, alumina powder, silica flour, brown iron oxide, lithium carbonate powder and
Paris white is mixed, and sodium silicate binder is added thereto and is well mixed, is then placed within heating furnace and sinters, after sintering is finished
Grinding, sieving, obtain mixed powder A；
Step 3：Chromium powder, nickel powder, molybdenum powder, manganese powder, ferrosilicon powder, magnesium aluminium powder, ferro-niobium powder, titanium-iron powder, the cerium oxide that step 1 is weighed
Powder, golden red stone flour, zircon flour are well mixed with the mixed powder A that step 2 is obtained, and are put into stove and are dried, obtain medicine core powder；
Step 4：The medicine core powder that step 3 is prepared is wrapped in 316 stainless steel belts by flux-cored wire producing machine, and
Drawing is carried out, flux-cored wire is obtained；
Step 5：The flux-cored wire that step 4 is obtained is stretched using spiral filament forming machine, disk into disk, pack stand-by.
5. the preparation method of nonmagnetic steel 20Mn23Al self-protection flux-cored wires according to claim 4, it is characterised in that
In the step 2：Sintering temperature is 600-750 DEG C, and sintering time is 3-4h.
6. the preparation method of nonmagnetic steel 20Mn23Al self-protection flux-cored wires according to claim 4, it is characterised in that
In the step 3：Drying temperature is 200-300 DEG C, and drying time is 2-2.5h.
7. the preparation method of nonmagnetic steel 20Mn23Al self-protection flux-cored wires according to claim 4, it is characterised in that
In the step 4：The loading of flux-cored wire is controlled in 18%-23%.
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| CN108340095A (en) * | 2018-02-22 | 2018-07-31 | 西安理工大学 | T2-Y and 20Mn23Al Self-protecting flux-cored wires and preparation method thereof |
| CN108453433A (en) * | 2018-02-12 | 2018-08-28 | 西安理工大学 | 51CrV4 spring steel Self-protecting flux-cored wire and preparation method thereof |
| CN109719424A (en) * | 2019-03-11 | 2019-05-07 | 江苏南通瑞舶莱焊业科技有限公司 | A kind of anti-stomata self-protection flux-cored wire |
| CN109719425A (en) * | 2019-03-11 | 2019-05-07 | 江苏南通瑞舶莱焊业科技有限公司 | A kind of wear-resisting welding wire with flux core |
| CN112404793A (en) * | 2020-10-08 | 2021-02-26 | 武汉科技大学 | Seamless flux-cored wire for welding low-nitrogen non-magnetic naval vessel steel |
| CN112404795A (en) * | 2020-10-08 | 2021-02-26 | 武汉科技大学 | Seamless self-protection flux-cored wire for welding low-nitrogen non-magnetic naval vessel steel |
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| CN108015448A (en) * | 2017-11-17 | 2018-05-11 | 武汉铁锚焊接材料股份有限公司 | A kind of low dirt low-toxicity flux-cored wire and its application method |
| CN108015448B (en) * | 2017-11-17 | 2020-06-30 | 武汉铁锚焊接材料股份有限公司 | Low-dust and low-toxicity flux-cored wire and using method thereof |
| CN108453433A (en) * | 2018-02-12 | 2018-08-28 | 西安理工大学 | 51CrV4 spring steel Self-protecting flux-cored wire and preparation method thereof |
| CN108340095A (en) * | 2018-02-22 | 2018-07-31 | 西安理工大学 | T2-Y and 20Mn23Al Self-protecting flux-cored wires and preparation method thereof |
| CN109719424A (en) * | 2019-03-11 | 2019-05-07 | 江苏南通瑞舶莱焊业科技有限公司 | A kind of anti-stomata self-protection flux-cored wire |
| CN109719425A (en) * | 2019-03-11 | 2019-05-07 | 江苏南通瑞舶莱焊业科技有限公司 | A kind of wear-resisting welding wire with flux core |
| CN112404793A (en) * | 2020-10-08 | 2021-02-26 | 武汉科技大学 | Seamless flux-cored wire for welding low-nitrogen non-magnetic naval vessel steel |
| CN112404795A (en) * | 2020-10-08 | 2021-02-26 | 武汉科技大学 | Seamless self-protection flux-cored wire for welding low-nitrogen non-magnetic naval vessel steel |
| CN112404795B (en) * | 2020-10-08 | 2022-03-04 | 武汉科技大学 | Seamless self-protection flux-cored wire for welding low-nitrogen non-magnetic naval vessel steel |
| CN117506229A (en) * | 2024-01-04 | 2024-02-06 | 山东聚力焊接材料有限公司 | Non-magnetic wear-resistant flux-cored wire |
| CN117506229B (en) * | 2024-01-04 | 2024-04-02 | 山东聚力焊接材料有限公司 | Non-magnetic wear-resistant flux-cored wire |
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Application publication date: 20171107 |