CN103495816B - CO2 gas shield stainless flux-cored wire and preparation method thereof - Google Patents
CO2 gas shield stainless flux-cored wire and preparation method thereof Download PDFInfo
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- CN103495816B CN103495816B CN201310485114.5A CN201310485114A CN103495816B CN 103495816 B CN103495816 B CN 103495816B CN 201310485114 A CN201310485114 A CN 201310485114A CN 103495816 B CN103495816 B CN 103495816B
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- iron
- powder
- medicated core
- core powder
- gas shield
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Classifications
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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
-
- 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
-
- 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
Abstract
Disclosure one CO2Gas shield stainless flux-cored wire; it is characterized in that: include medicated core powder and wrap up the steel band of this medicated core powder; the composition of the medicated core powder of this welding wire is as follows with weight percent: rutile 15-35%; silicomangan 12-25%, iron powder 12-30%, nikel powder 5-16%; almag 3-10%; chromic carbide iron 10-25%, molybdenum-iron 5-15%, vanadium iron 5-15%。The welding wire of the present invention has the advantage that can be suitably used for small dimension and can realize on ultra-thin stainless steel ware and container welding。
Description
Technical field
The present invention relates to welding material of metal technical field, be specifically related to a kind of CO2Gas shield stainless flux-cored wire and preparation method thereof。
Background technology
At present, the stainless flux-cored wire specification that market uses only has φ 1.2mm and above product, but the welding wire of this specification is difficulty with on ultra-thin stainless steel ware and container to be welded；But also argon arc welding must be used to weld, if it is desired that weld continuously with the craft that price is low, easy to operate, the use of (1.2mm and more than) because big specification welding wire, to adopt relatively large current/voltage (such as more than electric current 220A, voltage more than 25V) that soldered object (due to ultra-thin) can be caused to puncture when welder or damage etc.。
And, the stainless flux-cored wire used currently on the market is little due to proportion, when needing, to fill its shared space of same amount of welding wire in steel band big, in steel band pressing, drawing, tube reducing process, owing to medicated core powder therein takes up room greatly, drawing process medicated core pruinescence sharply compresses thus steel band being produced pressure and causing steel band to be easily broken off, leak powder。
Summary of the invention
The present invention is directed to the above-mentioned deficiency of prior art, it is provided that one is applicable to small dimension (φ 0.6mm), can realize the CO of welding on ultra-thin stainless steel ware and container2Gas shield stainless flux-cored wire。
In order to solve above-mentioned technical problem, the technical solution used in the present invention is: a kind of CO2Gas shield stainless flux-cored wire; including medicated core powder and the steel band wrapping up this medicated core powder; the composition of the medicated core powder of this welding wire is as follows with weight percent: rutile 15-35%; silicomangan 12-25%, iron powder 12-30%, nikel powder 5-16%; almag 3-10%; chromic carbide iron 10-25%, molybdenum-iron 5-15%, vanadium iron 5-15%。
As preferably, above-mentioned CO2Gas shield stainless flux-cored wire; including medicated core powder and the steel band wrapping up this medicated core powder; the composition of the medicated core powder of this welding wire is as follows with weight percent: rutile 18-25%; silicomangan 10-15%, iron powder 15-20%, nikel powder 8-12%; almag 3-8%; chromic carbide iron 15-20%, molybdenum-iron 8-12%, vanadium iron 6-12%。
As it is preferred that, above-mentioned CO2Gas shield stainless flux-cored wire, including medicated core powder and the steel band wrapping up this medicated core powder, the composition of the medicated core powder of this welding wire is as follows with weight percent: rutile 21%, silicomangan 13%; iron powder 17%, nikel powder 9%, almag 6%; chromic carbide iron 18%, molybdenum-iron 10%, vanadium iron 6%。
As it is preferred that, above-mentioned CO2Gas shield stainless flux-cored wire, including medicated core powder and the steel band wrapping up this medicated core powder, the composition of the medicated core powder of this welding wire is as follows with weight percent: rutile 18%, silicomangan 15%; iron powder 15%, nikel powder 12%, almag 5%; chromic carbide iron 20%, molybdenum-iron 9%, vanadium iron 6%。
As it is preferred that, above-mentioned CO2Gas shield stainless flux-cored wire, including medicated core powder and the steel band wrapping up this medicated core powder, the composition of the medicated core powder of this welding wire is as follows with weight percent: rutile 23%, silicomangan 11%; iron powder 15%, nikel powder 8%, almag 8%; chromic carbide iron 15%, molybdenum-iron 8%, vanadium iron 12%。
The above-mentioned steel band specification requirement for wrapping up medicated core powder of the present invention is:
(1) stainless steel belt chemical composition and mechanical property perform standard (GB/T222-2006) table 1 specific as follows:
Table 1
(2) technology requirement
2.1 applied codes: steel band nominal thickness is 0.40 ± 0.001mm, nominal width is 10-20mm flux-cored wire cold-rolled strip。
2.2 thickness tolerances should meet the regulation of table 2:
Table 2
2.3 surface quality
Stainless steel band surface must not have scab, crackle, be mingled with, folding and other are to using harmful defects, steel must not have layering。
Stainless steel band surface allows≤the slight pit of 1/2 thickness deviation, shadow scratch, it is allowed to there is the oxidation tint of local。Reverse side allows≤minute bubbles of 1/2 thickness deviation and roll impression, but should ensure that minimum thickness。
Stainless steel band is in quantity-produced process, and because the surface defect of local is not easily found and is difficult to remove, therefore, stainless steel band allows the delivery of band defect, but defective part must not exceed and often rolls up the 5% of total length。
The surface texture of stainless steel band
Roughness: Ra=0.50-1.3 μm, desired value: Ra=0.70-1.0 μm
2.4 detected rule and test method
The detected rule of stainless steel band and test method should meet the regulation of Q/HYAQ01 and Q/HYAQ04 standard。
Above-mentioned silicomangan (with reference to the GB/T4008--1996) chemical composition of the present invention is in Table 3:
Table 3
Above-mentioned molybdenum-iron (with reference to the GB/T3649--1987) chemical composition of the present invention is in Table 4:
Table 4
Above-mentioned chromic carbide iron (with reference to the GB/T5683-1987) chemical composition of the present invention is in Table 5:
Table 5
Above-mentioned almag (with reference to the GB/T5150--85) chemical composition of the present invention is in Table 6:
Table 6
Above-mentioned vanadium iron (with reference to the GB/T4139--2004) chemical composition of the present invention is in Table 7:
Table 7
The above-mentioned iron powder of the present invention be reduced iron powder (with reference to GB/T4136--1994) chemical composition in Table 8:
Table 8
Above-mentioned nikel powder (with reference to the GB/T2085--1989) chemical composition of the present invention is in Table 9:
Table 9
The above-mentioned rutile chemical composition of the present invention is in Table 10:
Table 10
The granularity of the above-mentioned each raw material of the present invention requires:
The mineral powder (rutile) of the present invention is through 695-705 DEG C of baking；Metal powder (silicomangan, iron powder, nikel powder, almag, chromic carbide iron, molybdenum-iron, vanadium iron etc.) uses after 125-135 DEG C is toasted and be incubated natural cooling screening in 5-6 hour。To remove moisture, thus reducing or eliminating the weld defect caused due to the existence of moisture。
The chemical composition content of the above-mentioned each component raw material of the present invention is all calculated by weight percentage, and each chemical composition sum is 100%, each complete component of common constituent。
The effect that the above-mentioned each raw material components of the present invention plays:
Rutile: use as slag former, the strict addition controlling slag former, it is possible to thinning postwelding skull, be conducive to the effusion of gas in molten bath, reduce pore quantity, improve the deposition rate of welding wire, rutile addition 15-35%。
Silicomangan: add appropriate element silicon in formula and contribute to improving appearance of weld, addition 12-25%。
Iron powder (reduced iron powder): the addition increase of iron powder can aid in raising deposition efficiency, reduces the quantity of pore and the pit occurred when with high speed fillet welding on priming paint steel plate, iron powder addition 12-30%。
Almag: add appropriate almag in formula and contribute to reducing the oxygen content in weld metal, be beneficial to the improvement of weld metal toughness；Almag addition 3-10%。
Nikel powder: add appropriate nikel powder in formula and contribute to improving welding seam toughness, addition 8-12%。
Chromic carbide iron: add appropriate chromic carbide iron in formula and contribute to improving weld strength, chromic carbide iron addition 10-25%。
Molybdenum-iron: add appropriate molybdenum-iron in formula and contribute to improving weld strength；Molybdenum-iron addition 5-15%。
Vanadium iron: add appropriate vanadium iron in formula and can improve the low-temperature impact toughness value of weld seam, vanadium iron addition 6-12%。
The size of above-mentioned medicated core each component of powder all crosses 100% mesh sieve, and suitable medicated core powder particles is conducive to composition mix homogeneously。
The present invention also provides for a kind of above-mentioned CO2The preparation method of gas shield stainless flux-cored wire, preparation process includes:
(1) according to formula proportion by CO2The each component mix homogeneously of medicated core powder of gas shield stainless flux-cored wire；
(2) steel band of parcel medicated core powder is first rolled into U-lag, in U-lag, then add the half of medicated core powder total amount, flatten again after U-lag being healed up with forming machine；Then the steel band after flattening being rolled into U-shaped again, add second half medicated core powder of residue, being healed up by secondary U-lag with forming machine makes medicated powder wrap up wherein, is then passed through wire drawing machine by road drawing, tube reducing, finally makes its diameter reach 0.6mm, obtain CO2Gas shield stainless flux-cored wire。
The addition of the above-mentioned medicated core powder of the present invention is account for the medicated core powder of welding wire gross weight 9-11%。
The welding wire that the present invention is above-mentioned, when welder, its welding machine is electric current 120-140A, voltage 16-18V。
Advantages of the present invention and beneficial effect:
1. the medicated core powder ratio of the present invention is great, when needing, to fill its shared space of same amount of welding wire in steel band little, in steel band pressing, drawing, tube reducing process, owing to medicated core powder therein takes up room little, drawing process medicated core powder will not sharply compress, thus steel band will not be produced bigger pressure, steel band is not easy fracture, leakage powder at drawing process, successfully realizes manufacture and the formation of the small dimension welding wire that diameter is 0.6mm。
2. the welding wire that prepared by the medicated core powder of the present invention successfully realizes welding on ultra-thin stainless steel ware and container, and the flux-cored wire of extraordinary small dimension uses electric current 120-140 (A), voltage 16-18 (V) can perfectly realize welding；The fusion of welding bead is smooth, attractive in appearance。
3. the small dimension welding wire that diameter is 0.6mm is prepared in the medicated core powder realization first of the present invention, and the welding wire of this small dimension there is presently no report, only has the welding wire of 1.2mm and above specification；And, the method being conventionally used to welding ultra-thin stainless steel utensil and container, it is only capable of using specification to be 1.2mm and also to adopt argon arc welding to realize, if it is desired that weld continuously with the craft that price is low, easy to operate, the use of (1.2mm and more than) because big specification welding wire, to adopt relatively large current/voltage (such as more than electric current 220A, voltage more than 25V) that soldered object (due to ultra-thin) can be caused to puncture when welder or damage etc.。And the small dimension welding wire of the present invention successfully overcomes the deficiency of above-mentioned existing stainless flux-cored wire, it is possible to achieve the manual continuous welding process that simple to operate, cost is low。
4. the preparation method of welding wire of the present invention; adopt twice rolling U-lag and the method wrapping up medicated core powder respectively twice; adopt said method; medicated core powder addition each time is few; the amount of the medicated core powder of the steel band parcel of each layer is relatively just few; therefore flattening or drawing process does not result in medicated core powder and sharply compresses steel band causes the phenomenon of excessive pressure occur, thus effectively protecting the integrity of steel band, and prepared by the small dimension welding wire that can realize 0.6mm diameter；And adding medicated core powder at twice, it is more uniform that the medicated core powder of whole welding wire is distributed, and has higher deposition rate and bigger work efficiency at welding process welding wire, and during welding, weldment is flawless sunken。
5. the stainless flux-cored wire of the present invention is in use, and the generation amount of face of weld slag is less, spatter is little, appearance of weld good and weld fumes is few。Manual welding can be adopted to weld, it is also possible to need to adjust flexibly each component proportion of medicated core powder according to welding, use more convenient。
Accompanying drawing explanation
Accompanying drawing is the processing process figure of submerged-arc welding flux-cored wire of the present invention。
Detailed description of the invention:
The present invention is described in further detail by the examples below, but the present invention is not limited solely to following example。
Embodiment 1
Selecting steel band nominal thickness is 0.40mm, and nominal width is cut into the flux-cored wire cold-rolled strip of 14mm, adopts forming machine to be rolled into U-lag。For 1000 grams of submerged-arc welding flux-cored wires: take rutile 210 grams, silicomangan 130 grams, iron powder 170 grams, nikel powder 90 grams, almag 60 grams, chromic carbide iron 180 grams, molybdenum-iron 100 grams, vanadium iron 60 grams。All raw materials are added mixing 30 minutes in mixer, then takes 500 grams and add in U-lag steel band；U-lag is healed up so that medicated core powder parcel wherein flattens, and is again rolled into U-lag, remaining 500 grams of medicated core powder are added in U-lag steel band and is then passed through wire drawing machine by road drawing, tube reducing, finally make the diameter of welding wire reach 0.6mm。Medicated core powder loading accounts for the 10% of welding wire gross weight。
1) mechanical performance of embodiment of the present invention sample welding wire is in Table 11:
1.1 tension tests
When measuring the yield strength of deposited metal yield point or yield strength and other materials, elastic strain speed must not exceed 30mm per second, load when reaching yield point or after yield load, when measuring tensile strength, strain rate is maximum rises to 40% gauge length per second。
1.2 impact tests:
All of impact test all carries out on the charpy impact test machine of accreditation, and the impact energy of testing machine must not lower than 150J。When test temperature is not room temperature, the temperature fluctuation range of test should control in 0 ± 1 DEG C, and keep a period of time (6 minutes), make specimen temperature uniformity in the whole cross section of sample, adequate measures should be taked simultaneously to prevent from actual tests process occurs bigger variations in temperature。If time disputable, room temperature should be taken as 18-25 DEG C。
Table 11
2) chemical composition test
Undertaken welding wire after built-up welding test plate (panel) freezes, taking centre position wlding。Carrying out chemical composition spectroscopic test by the direct-reading spectrometer wlding to taking, the signal component value measured by equipment is test value。
Result is as shown in table 12:
Table 12
Showing from result, the sample of the embodiment of the present invention 1 preparation has good mechanical performance, it is possible to suitable in the welding of super thin metal object。
Embodiment 2
Selecting steel band nominal thickness is 0.40mm, and nominal width is cut into the flux-cored wire cold-rolled strip of 14mm, adopts forming machine to be rolled into U-lag。For 1000 grams of submerged-arc welding flux-cored wires: take rutile 180 grams, silicomangan 150 grams, iron powder 150 grams, nikel powder 120 grams, almag 50 grams, chromic carbide iron 200 grams, molybdenum-iron 90 grams, vanadium iron 60 grams。All raw materials are added mixing 30 minutes in mixer, then takes 500 grams and add in U-lag steel band；U-lag is healed up so that medicated core powder parcel wherein flattens, and is again rolled into U-lag, remaining 500 grams of medicated core powder are added in U-lag steel band and is then passed through wire drawing machine by road drawing, tube reducing, finally make the diameter of welding wire reach 0.6mm。Medicated core powder loading accounts for the 10% of welding wire gross weight。
Embodiment 3
Selecting steel band nominal thickness is 0.40mm, and nominal width is cut into the flux-cored wire cold-rolled strip of 14mm, adopts forming machine to be rolled into U-lag。For 1000 grams of submerged-arc welding flux-cored wires: take rutile 230 grams, silicomangan 110 grams, iron powder 150 grams, nikel powder 80 grams, almag 80 grams, chromic carbide iron 150 grams, molybdenum-iron 80 grams, vanadium iron 120 grams。All raw materials are added mixing 30 minutes in mixer, then takes 500 grams and add in U-lag steel band；U-lag is healed up so that medicated core powder parcel wherein flattens, and is again rolled into U-lag, remaining 500 grams of medicated core powder are added in U-lag steel band and is then passed through wire drawing machine by road drawing, tube reducing, finally make the diameter of welding wire reach 0.6mm。Medicated core powder loading accounts for the 10% of welding wire gross weight。
Claims (8)
1. a CO2Gas shield stainless flux-cored wire; including medicated core powder and the steel band wrapping up this medicated core powder; it is characterized in that: the composition of the medicated core powder of this welding wire is as follows with weight percent: rutile 18-25%; silicomangan 10-15%, iron powder 15-20%, nikel powder 8-12%; almag 3-8%; chromic carbide iron 15-20%, molybdenum-iron 8-12%, vanadium iron 6-12%；The diameter of described welding wire is 0.6mm。
2. CO according to claim 12Gas shield stainless flux-cored wire, it is characterised in that: the composition of the medicated core powder of this welding wire is as follows with weight percent: rutile 21%, silicomangan 13%, iron powder 17%, nikel powder 9%, almag 6%, chromic carbide iron 18%, molybdenum-iron 10%, vanadium iron 6%。
3. CO according to claim 12Gas shield stainless flux-cored wire, it is characterised in that: the composition of the medicated core powder of this welding wire is as follows with weight percent: rutile 18%, silicomangan 15%, iron powder 15%, nikel powder 12%, almag 5%, chromic carbide iron 20%, molybdenum-iron 9%, vanadium iron 6%。
4. CO according to claim 12Gas shield stainless flux-cored wire, it is characterised in that: the composition of the medicated core powder of this welding wire is as follows with weight percent: rutile 23%, silicomangan 11%, iron powder 15%, nikel powder 8%, almag 8%, chromic carbide iron 15%, molybdenum-iron 8%, vanadium iron 12%。
5. the CO according to any claim in claim 1-42Gas shield stainless flux-cored wire, it is characterised in that: described chromic carbide iron is following commercially available prod: trade mark HCr000, chemical composition Cr >=50, C≤0.10, Si≤2.0, P≤0.05, S≤0.04；Or trade mark HCr000Si, chemical composition Cr60～70, C≤0.12, Si4.0～5.5, P≤0.06, S≤0.04。
6. the CO according to any claim in claim 1-42Gas shield stainless flux-cored wire, it is characterised in that: described almag is following commercially available prod: trade mark FLM3, chemical composition Al47～53%, Mg47～53%, Al+Mg >=97.5%, Fe≤0.4%；Described vanadium iron is following commercially available prod: trade mark FeV50, chemical composition V >=50.0%, Si≤2.0%, P≤0.10%, S≤0.06%, Al≤0.5%, Mn≤0.05, C≤0.10, and surplus is ferrum；Described iron powder is following commercially available prod: trade mark FHD100-25, chemical composition Fe >=98.0%, C≤0.05%, Si≤0.15%, Mn≤0.4%, P≤0.02%, S≤0.02%, O≤1.0%；Described nikel powder is following commercially available prod: the trade mark FNi-1, Ni >=98%, C≤0.02%, P≤0.01%, S≤0.01%；Described rutile is following commercially available prod: trade mark Australia, chemical composition TiO2>=95.0%, FeO≤0.5, S≤0.03, P≤0.05。
7. the CO described in a claim 12The preparation method of gas shield stainless flux-cored wire, it is characterised in that: preparation process includes:
(1) according to formula proportion by CO2The each component mix homogeneously of medicated core powder of gas shield stainless flux-cored wire；
(2) steel band of parcel medicated core powder is first rolled into U-lag, in U-lag, then add the half of medicated core powder total amount, flatten again after U-lag being healed up with forming machine；Then the steel band after flattening being rolled into U-shaped again, add second half medicated core powder of residue, being healed up by secondary U-lag with forming machine makes medicated powder wrap up wherein, is then passed through wire drawing machine by road drawing, tube reducing, finally makes its diameter reach 0.6mm, obtain CO2Gas shield stainless flux-cored wire。
8. CO according to claim 72The preparation method of gas shield stainless flux-cored wire, it is characterised in that: the addition of described medicated core powder is account for the medicated core powder of welding wire gross weight 9-11%；Welding machine during welding is electric current 120-140A, voltage 16-18V。
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104526179B (en) * | 2014-12-02 | 2016-08-24 | 常州市正阳焊接材料有限公司 | A kind of CO2gas shield high tenacity carbon steel flux-cored wire |
| CN104858573A (en) * | 2015-05-06 | 2015-08-26 | 贵州航天凯宏科技有限责任公司 | High-strength flux-cored wire |
| CN107498212A (en) * | 2017-10-18 | 2017-12-22 | 镇江市锶达合金材料有限公司 | A kind of property of medicine solder wire material formula and its manufacture method |
| CN107717258B (en) * | 2017-11-30 | 2019-07-30 | 桂林航天工业学院 | CO 2 gas-shielded low-alloy steel flux-cored wire and its production method |
| CN108971802A (en) * | 2018-07-16 | 2018-12-11 | 中国京冶工程技术有限公司 | A kind of flux-cored wire preparation method suitable for robot welding |
| CN112404797B (en) * | 2020-12-06 | 2023-10-27 | 中铁宝桥集团有限公司 | Welding wire for welding 321+Q370qENH transition layer of composite steel and welding method |
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| JPS6234697A (en) * | 1985-08-09 | 1987-02-14 | Daido Steel Co Ltd | Flux cored wide for welding |
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| CN101412171A (en) * | 2008-11-28 | 2009-04-22 | 山东飞乐焊业有限公司 | Carbon steel flux-cored wire without weld surface pressing pit |
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