CN106475706A - Exempt from application bridge steel weather-proof flux-cored wire and preparation method thereof - Google Patents
Exempt from application bridge steel weather-proof flux-cored wire and preparation method thereof Download PDFInfo
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- CN106475706A CN106475706A CN201610947511.3A CN201610947511A CN106475706A CN 106475706 A CN106475706 A CN 106475706A CN 201610947511 A CN201610947511 A CN 201610947511A CN 106475706 A CN106475706 A CN 106475706A
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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
- B23K35/3073—Fe as the principal constituent with Mn as next major constituent
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Abstract
The invention discloses one kind exempts from application bridge steel weather-proof flux-cored wire and preparation method thereof, it is made up of steel crust and medicated powder core, this medicated powder core includes consisting of composition：Ferro-boron 2～8wt%, molybdenum-iron 0.01～2wt%, fluoride 1～6wt%, zircon sand 1.5～8wt%, magnesium powder 2～7wt%, quartz sand 2～5wt%, ferrosilicon 2～8wt%, electrolytic manganese 5～19wt%, ferromanganese 1～5wt%, nikel powder 1～6%, crome metal 1～8wt%, copper powder 1～8wt%, ferrotianium 2～9wt%, Anhydrite 0.1～5wt%, sodium titanate 2～8wt% and rutile 20～40wt%, balance of iron powder.Compared with the existing, welding arc stablility of the present invention, splash little, de- slag easily, appearance of weld attractive in appearance it is adaptable to all-position welding, the mechanical property of weld seam is good, and 40 DEG C of impact flexibility are more than 80J, and have very strong corrosion resistance.
Description
Technical field
The present invention relates to field of welding material, more particularly, to one kind exempt from application bridge steel weather-proof flux-cored wire and its preparation
Method.
Background technology
Common steel bridge typically adopts oil paint coating for antirust, anti-corrosive, and under natural environment, paint is easily subject to purple by force
The impact such as outside line, temperature, humidity, precipitation, wind speed and aging, thus, steel bridge needs repeatedly application again to safeguard within working life.
Increased human and material resources, increase maintenance difficulty, and in painting Organic substance volatilization release, destroy natural environment.
Exempt to add the elements such as appropriate copper, chromium, nickel in application Weather-resistance bridge, make it under natural environment, outer surface meeting
Automatically form non-maintaining, form compact and stable oxide protective layer, the effect of long-term anti-atmospheric corrosion can be played.Exempt from application weathering steel
Bridge, not only with short production cycle, cost is relatively low, and without coating paint, health environment-friendly, more can save using normal tape application
The Steel Bridge maintenance work under rugged environment in the future.
Still can not find and exempt from the wlding that application Weather-resistance bridge steel matches now, using weld part after the welding of existing wlding
Position also needs to adopt oil paint coating.
Content of the invention
An object of the present invention is that offer one kind exempts from the weather-proof flux-cored wire of application bridge steel, and welding arc is steady
Fixed, splash little, de- slag easily, appearance of weld attractive in appearance it is adaptable to all-position welding, the mechanical property of weld seam is good, and -40 DEG C of impacts are tough
Property be more than 80J, and there is very strong corrosion resistance.
Technical scheme is：One kind exempts from the weather-proof flux-cored wire of application bridge steel, is made up of steel crust and medicated powder core, this medicine
Powder core includes consisting of composition：Ferro-boron 2～8wt%, molybdenum-iron 0.01～2wt%, fluoride 1～6wt%, zircon sand 1.5～
8wt%, magnesium powder 2～7wt%, quartz sand 2～5wt%, ferrosilicon 2～8wt%, electrolytic manganese 5～19wt%, ferromanganese 1～5wt%,
Nikel powder 1～6%, crome metal 1～8wt%, copper powder 1～8wt%, ferrotianium 2～9wt%, Anhydrite 0.1～5wt%, sodium titanate 2～
8wt% and rutile 20～40wt%, balance of iron powder.
Preferably, described compositions of surfacing metal is：Ferro-boron 2～8wt%, molybdenum-iron 0.01～2wt%, fluoride 1.5-
2.5wt%, zircon sand 1.5-2.5wt%, magnesium powder 2～7wtwt%, quartz sand 2.5-3wt%, ferrosilicon 2～8wtwt%, electrolysis
Manganese 12-14wt%, ferromanganese 2-4wt%, nikel powder 3-3.5wt%, crome metal 1～8wt%, copper powder 2-2.3wt%, ferrotianium 2～
9wt%, Anhydrite 0.5-2wt%, sodium titanate 2～8wt% and rutile 35-40wt%, balance of iron powder.
Preferably, ferro-boron 4wt%, molybdenum-iron 0.05wt%, fluoride 2.5wt%, zircon sand 2.5wt%, magnesium powder
4wt%, quartz sand 2.5wt%, ferrosilicon 5wt%, electrolytic manganese 14wt%, ferromanganese 2wt%, nikel powder 3wt%, crome metal 3wt%, copper
Powder 2wt%, ferrotianium 3wt%, Anhydrite 0.5wt%, sodium titanate 4wt% and rutile 40wt%, balance of iron powder.
Preferably, ferro-boron 4wt%, molybdenum-iron 0.05wt%, fluoride 1.5wt%, zircon sand 1.5wt%, magnesium powder
4wt%, quartz sand 3wt%, ferrosilicon 5wt%, electrolytic manganese 12wt%, ferromanganese 4wt%, nikel powder 3wt%, crome metal 3wt%, copper powder
2wt%, ferrotianium 3wt%, Anhydrite 2wt%, sodium titanate 4wt% and rutile 35wt%, balance of iron powder.
Preferably, ferro-boron 4wt%, molybdenum-iron 0.05wt%, fluoride 2.5wt%, zircon sand 1.5wt%, magnesium powder
4wt%, quartz sand 3wt%, ferrosilicon 5wt%, electrolytic manganese 14wt%, ferromanganese 2wt%, nikel powder 3.5wt%, crome metal 3wt%, copper
Powder 2.3wt%, ferrotianium 3wt%, Anhydrite 0.5wt%, sodium titanate 4wt% and rutile 37.5wt%, balance of iron powder.
Preferably, described medicated powder core accounts for 12～18wt% of flux-cored wire gross mass.
Preferably, described steel crust includes following component：C 0.02～0.04wt%, Mn 0.15～0.35wt%,
Si≤0.035wt%, S≤0.015wt%, P≤0.017wt%, Al≤0.05wt% and N≤0.005wt%, balance of Fe and
Inevitably impurity.
Preferably, described steel crust includes following component：C 0.02～0.035wt%, Mn 0.15～
0.35wt%, Si≤0.35wt%, S≤0.015wt%, P≤0.017wt%, Al≤0.05wt% and N≤0.005wt%, remaining
Measure as Fe and inevitable impurity.
Preferably, described steel crust includes following component：C：0.025%th, Mn：0.22%th, Si：0.0082%th, S：
0.0056%th, P：0.010%th, Al：0.018% and N：0.0023%, balance of Fe and inevitable impurity.
The second object of the present invention is to provide a kind of exempts from the preparation method with weather-proof flux-cored wire for the application bridge steel.
Technical scheme is：A kind of exempt from the preparation method with weather-proof flux-cored wire for the application bridge steel, comprise the following steps：
Before each component mixing by medicated powder core, first with 80 mesh sieves, each medicated powder is carried out process of sieving, then by it
After being uniformly mixed according to a ratio, it is placed on steel crust, wrap up or roll filamentation the weldering of the medicated core through drawing tube reducing to predetermined dimension
Silk.
Inventive principle：
Ferro-boron：B can suppress the generation of crystal boundary pro-eutectoid ferrite, adds appropriate boron can improve the intensity of deposited metal,
But low temperature impact properties first rise and decline afterwards with the increase of B mass fraction, and therefore in medicated powder, the addition of ferro-boron is.
Molybdenum-iron：Intensity, quenching degree can be improved, improve the removability of slag with crystal grain thinning, improve arc stability, but molybdenum
Too high levels can make toughness deteriorate.
Fluoride：The fusing point of adjustment slag and viscosity, improve the removability of slag, reduce the content of Diffusible Hydrogen In Deposited Metal,
Zircon sand：Act primarily as slag making, improve the removability of slag can effect.
Ferrosilicon：Silicon is deoxidizer, can refine molten drop, improves arc stability, improves the burn-off rate of welding wire, improves molten
Metallized yield point and tensile strength.But too high levels can lead to, and intensity is too high, toughness declines.
Electrolytic manganese：Manganese not only can together with silicon combined deoxidation, also there is the effect of desulfurization, appropriate manganese element, permissible
Improve the intensity of deposited metal.In medicated powder core, manganese content is too low can lead to that intensity is not enough, deoxidation is insufficient, and too high levels can lead to
Weld metal impact flexibility deteriorates.
Nikel powder：Nickel can reduce the ductile-brittle transition temperature of weld metal, under certain condition, with the increase of nickel, intensity
Improve, low-temperature impact toughness improves significantly, nickel has higher corrosion resistance to soda acid simultaneously, at high temperature
There is antirust and temperature capacity；But Ni too high levels, can increase the hot cracking tendency of deposited metal.
Crome metal：Cr is one of main weatherability element, the raising of deposited metal tensile strength is played the role of very big, but
It is too high levels, the obvious reduction of plasticity, impact flexibility can be caused.
Copper powder：Copper can improve intensity and the toughness of deposited metal, particularly improves atmospheric corrosion resistance.Shortcoming is in heat
Easily produce hot-short during processing.
Ferrotianium：Ti is strong deoxidizer.It can promote the formation of needle-like ferrum element, crystal grain thinning, and plays the role of slag making.
Anhydrite：It is mainly used in slag making, stablizes electric arc, refinement molten drop, improve restarting performance, but too high levels can increase
The fusing point of slag and viscosity, make the removability of slag be deteriorated.
Sodium titanate：It is mainly used in slag making, stablizes electric arc, improve removability of slag energy.
Rutile：Act primarily as slag making, stablize electric arc, improve appearance of weld, improve removability of slag energy, reduce the effect such as splashing.
Iron powder：Be conducive to medicated powder to be uniformly distributed, deposition efficiency and the arc stability of welding can be improved.
In the present invention, steel crust be 12～16mm for width and thickness be 0.6～1.0mm mild steel steel band；Described
A diameter of 1.2～the 2.4mm of flux-cored wire.
Beneficial effect：
Welding arc stablility of the present invention, splash little, de- slag easily, appearance of weld attractive in appearance it is adaptable to all-position welding, weld seam
Mechanical property good, -40 DEG C of impact flexibility are more than 80J, and have very strong corrosion resistance.
Deposited metal mechanical property be tensile strength >=400Mpa, yield strength >=510Mpa, elongation percentage >=22%, -40
DEG C impact >=80J, atmospheric corrosion resistance index I >=6.5.
Specific embodiment
With reference to specific embodiment, the present invention is further illustrated.
Embodiment 1
The mass percent of each component of medicated powder core is as follows：Ferro-boron 4%, molybdenum-iron 0.05%, fluoride 2.5%, zircon sand
2.5%th, magnesium powder 4%, quartz sand 2.5%, ferrosilicon 5%, electrolytic manganese 14%, ferromanganese 2%, nikel powder 3%, crome metal 3%, copper powder
2%th, ferrotianium 3%, Anhydrite 0.5%, sodium titanate 4%, rutile 40%, balance of iron powder.
The composition of carbon steel steel band is：C：0.025%th, Mn：0.22%th, Si：0.0082%th, S：0.0056%th, P：
0.010%th, Al：0.018% and N：0.0023%, balance of ferrum and impurity.
Before each component mixing by medicated powder core, first with 80 mesh sieves, each medicated powder is carried out process of sieving, then by it
After being uniformly mixed according to a ratio, it is placed on steel crust, wrap up or roll filamentation the weldering of the medicated core through drawing tube reducing to predetermined dimension
Silk.
Embodiment 2
The mass percent of each component of medicated powder core is as follows：Ferro-boron 4%, molybdenum-iron 0.05%, fluoride 1.5%, zircon sand
1.5%th, magnesium powder 4%, quartz sand 3%, ferrosilicon 5%, electrolytic manganese 12%, ferromanganese 4%, nikel powder 3%, crome metal 3%, copper powder 2%,
Ferrotianium 3%, Anhydrite 2%, sodium titanate 4%, rutile 35%, balance of iron powder.
Other steps are same as Example 1.
Embodiment 3
The mass percent of each component of medicated powder core is as follows：Ferro-boron 4%, molybdenum-iron 0.05%, fluoride 2.5%, zircon sand
1.5%th, magnesium powder 4%, quartz sand 3%, ferrosilicon 5%, electrolytic manganese 14%, ferromanganese 2%, nikel powder 3.5%, crome metal 3%, copper powder
2.3%th, ferrotianium 3%, Anhydrite 0.5%, sodium titanate 4%, rutile 37.5%, balance of iron powder.
Other steps are same as Example 1.
That implements 1-3 exempts from application bridge steel weathering steel flux-cored wire, when weld using DC reverse connection, arc stability, winged
Splash little, de- slag easily, appearance of weld attractive in appearance it is adaptable to all-position welding.Deposited metal composition is：C：0.042%th, Mn：
1.17%th, Si：0.24%th, S：0.0076%th, P：0.0089%th, Cr：0.42%th, Ni：0.55%th, Cu：0.36%.Deposited metal
Mechanical property is：Yield strength Rel：510Mpa, tensile strength Rm：590Mpa, elongation percentage A：25%, -40 DEG C of ballistic works：
118J, atmospheric corrosion resistance index I=6.7.
The present invention exempts from the weather-proof flux-cored wire of application bridge steel it is adaptable to tensile strength rank is that more than 500MPa height is resistance to
Wait the welding of steel, be particularly well-suited to the fields such as bridge, rail truck, ship.
Claims (10)
1. one kind exempts from the weather-proof flux-cored wire of application bridge steel, is made up of steel crust and medicated powder core, and this medicated powder core includes following
Constituent：Ferro-boron 2～8wt%, molybdenum-iron 0.01～2wt%, fluoride 1～6wt%, zircon sand 1.5～8wt%, magnesium powder 2～
7wt%, quartz sand 2～5wt%, ferrosilicon 2～8wt%, electrolytic manganese 5～19wt%, ferromanganese 1～5wt%, nikel powder 1～6%, gold
Belong to chromium 1～8wt%, copper powder 1～8wt%, ferrotianium 2～9wt%, Anhydrite 0.1～5wt%, sodium titanate 2～8wt% and rutile
20～40wt%, balance of iron powder.
2. according to claim 1 exempt from the weather-proof flux-cored wire of application bridge steel it is characterised in that described compositions of surfacing metal is：
Ferro-boron 2～8wt%, molybdenum-iron 0.01～2wt%, fluoride 1.5-2.5wt%, zircon sand 1.5-2.5wt%, magnesium powder 2～
7wtwt%, quartz sand 2.5-3wt%, ferrosilicon 2～8wtwt%, electrolytic manganese 12-14wt%, ferromanganese 2-4wt%, nikel powder 3-
3.5wt%, crome metal 1～8wt%, copper powder 2-2.3wt%, ferrotianium 2～9wt%, Anhydrite 0.5-2wt%, sodium titanate 2～
8wt% and rutile 35-40wt%, balance of iron powder.
3. according to claim 2 exempt from the weather-proof flux-cored wire of application bridge steel it is characterised in that described compositions of surfacing metal is：
Ferro-boron 4wt%, molybdenum-iron 0.05wt%, fluoride 2.5wt%, zircon sand 2.5wt%, magnesium powder 4wt%, quartz sand 2.5wt%, silicon
Ferrum 5wt%, electrolytic manganese 14wt%, ferromanganese 2wt%, nikel powder 3wt%, crome metal 3wt%, copper powder 2wt%, ferrotianium 3wt%, Anhydrite
0.5wt%, sodium titanate 4wt% and rutile 40wt%, balance of iron powder.
4. according to claim 2 exempt from the weather-proof flux-cored wire of application bridge steel it is characterised in that described compositions of surfacing metal is：
Ferro-boron 4wt%, molybdenum-iron 0.05wt%, fluoride 1.5wt%, zircon sand 1.5wt%, magnesium powder 4wt%, quartz sand 3wt%, ferrosilicon
5wt%, electrolytic manganese 12wt%, ferromanganese 4wt%, nikel powder 3wt%, crome metal 3wt%, copper powder 2wt%, ferrotianium 3wt%, Anhydrite
2wt%, sodium titanate 4wt% and rutile 35wt%, balance of iron powder.
5. according to claim 2 exempt from the weather-proof flux-cored wire of application bridge steel it is characterised in that described compositions of surfacing metal is：
Ferro-boron 4wt%, molybdenum-iron 0.05wt%, fluoride 2.5wt%, zircon sand 1.5wt%, magnesium powder 4wt%, quartz sand 3wt%, ferrosilicon
5wt%, electrolytic manganese 14wt%, ferromanganese 2wt%, nikel powder 3.5wt%, crome metal 3wt%, copper powder 2.3wt%, ferrotianium 3wt%, length
Stone 0.5wt%, sodium titanate 4wt% and rutile 37.5wt%, balance of iron powder.
6. according to claim 1-5 arbitrary described exempt from the weather-proof flux-cored wire of application bridge steel it is characterised in that：Described medicated powder
Core accounts for 12～18wt% of flux-cored wire gross mass.
7. described exempt from the weather-proof flux-cored wire of application bridge steel it is characterised in that described steel according to claim 1-6 is arbitrary
Crust includes following component：C 0.02～0.04wt%, Mn 0.15～0.35wt%, Si≤0.035wt%, S≤
0.015wt%, P≤0.017wt%, Al≤0.05wt% and N≤0.005wt%, balance of Fe and inevitable impurity.
8. according to claim 7 exempt from the weather-proof flux-cored wire of application bridge steel it is characterised in that the outer suitcase of described steel
Include following component：C 0.02～0.035wt%, Mn 0.15～0.35wt%, Si≤0.35wt%, S≤0.015wt%, P≤
0.017wt%, Al≤0.05wt% and N≤0.005wt%, balance of Fe and inevitable impurity.
9. according to claim 8 exempt from the weather-proof flux-cored wire of application bridge steel it is characterised in that the outer suitcase of described steel
Include following component：C：0.025%th, Mn：0.22%th, Si：0.0082%th, S：0.0056%th, P：0.010%th, Al：0.018% He
N：0.0023%, balance of Fe and inevitable impurity.
10. exempt from the preparation method with weather-proof flux-cored wire for the application bridge steel described in a kind of claim 7, comprise the following steps：
Before each component mixing by medicated powder core, first with 80 mesh sieves, each medicated powder is carried out process of sieving, then it is mixed by proportioning
After closing uniformly, it is placed on steel crust, wraps up or roll filamentation the flux-cored wire through drawing tube reducing to predetermined dimension.
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| CN107414340A (en) * | 2017-05-11 | 2017-12-01 | 安徽飞弧焊业股份有限公司 | A kind of bridge flux-cored wire |
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| CN107283084B (en) * | 2017-06-23 | 2019-09-20 | 天津市永昌焊丝有限公司 | A kind of marine atmosphere corrosion-resisting steel submerged arc flux-cored wire |
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