CN106475706B - Exempt from coating bridge steel weather-proof flux-cored wire and preparation method thereof - Google Patents
Exempt from coating bridge steel weather-proof flux-cored wire and preparation method thereof Download PDFInfo
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- CN106475706B CN106475706B CN201610947511.3A CN201610947511A CN106475706B CN 106475706 B CN106475706 B CN 106475706B CN 201610947511 A CN201610947511 A CN 201610947511A CN 106475706 B CN106475706 B CN 106475706B
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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 to exempt from coating bridge steel weather-proof flux-cored wire and preparation method thereof, it is made of steel crust and medicinal powder core, the medicinal powder core includes consisting of ingredient: 2~8wt% of ferro-boron, 0.01~2wt% of molybdenum-iron, 1~6wt% of fluoride, 1.5~8wt% of zircon sand, 2~7wt% of magnesium powder, 2~5wt% of quartz sand, 2~8wt% of ferrosilicon, 5~19wt% of electrolytic manganese, 1~5wt% of manganese iron, nickel powder 1~6%, 1~8wt% of crome metal, 1~8wt% of copper powder, 2~9wt% of ferrotianium, 0.1~5wt% of feldspar, 20~40wt% of 2~8wt% of sodium titanate and rutile, surplus is iron powder.Compared with the existing, welding arc stablility of the present invention, small, the de- slag that splashes are easy, and appearance of weld is beautiful, is suitable for all-position welding, and the mechanical property of weld seam is good, and -40 DEG C of impact flexibility are greater 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 to exempt from coating bridge steel weather-proof flux-cored wire and its preparation
Method.
Background technique
Common steel bridge generally uses oil paint coating for antirust, anti-corrosive, and in a natural environment, paint is easy by strong purple
The influences such as outside line, temperature, humidity, precipitation, wind speed and aging, thus, steel bridge needs repeatedly coating again to safeguard within working life.
Human and material resources are increased, maintenance difficulty is increased, and the volatilization of organic matter discharges in paint, destroys natural environment.
Exempt to joined the elements such as suitable copper, chromium, nickel in coating Weather-resistance bridge, makes it in a natural environment, outer surface meeting
Non-maintaining, form compact and stable oxide protective layer is automatically formed, the effect of long-term anti-atmospheric corrosion can be played.Exempt from coating weathering steel
Bridge, it is not only with short production cycle, cost is relatively low, but also do not have to coating paint, health environment-friendly can more be saved using normal tape coating
The Steel Bridge maintenance work under rugged environment in the future.
The wlding for still can not find now and exempting from coating Weather-resistance bridge steel and matching, using weld part after the welding of existing wlding
Position is also needed using oil paint coating.
Summary of the invention
An object of the present invention is that providing one kind exempts from coating bridge steel with weather-proof flux-cored wire, and welding arc is steady
Fixed, small, the de- slag that splashes is easy, and appearance of weld is beautiful, is suitable for all-position welding, the mechanical property of weld seam is good, and -40 DEG C of impacts are tough
Property be greater than 80J, and have very strong corrosion resistance.
Technical solution is: one kind exempting from the weather-proof flux-cored wire of coating bridge steel, is made of steel crust and medicinal powder core, the medicine
Powder core includes consisting of ingredient: 2~8wt% of ferro-boron, 0.01~2wt% of molybdenum-iron, 1~6wt% of fluoride, zircon sand 1.5~
8wt%, 2~7wt% of magnesium powder, 2~5wt% of quartz sand, 2~8wt% of ferrosilicon, 5~19wt% of electrolytic manganese, 1~5wt% of manganese iron,
Nickel powder 1~6%, 1~8wt% of crome metal, 1~8wt% of copper powder, 2~9wt% of ferrotianium, 0.1~5wt% of feldspar, sodium titanate 2~
20~40wt% of 8wt% and rutile, surplus are iron powder.
Preferably, the compositions of surfacing metal are as follows: 2~8wt% of ferro-boron, 0.01~2wt% of molybdenum-iron, fluoride 1.5-
2.5wt%, zircon sand 1.5-2.5wt%, 2~7wtwt% of magnesium powder, quartz sand 2.5-3wt%, 2~8wtwt% of ferrosilicon, electrolysis
Manganese 12-14wt%, manganese iron 2-4wt%, nickel powder 3-3.5wt%, 1~8wt% of crome metal, copper powder 2-2.3wt%, ferrotianium 2~
9wt%, feldspar 0.5-2wt%, 2~8wt% of sodium titanate and rutile 35-40wt%, surplus are 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%, manganese iron 2wt%, nickel powder 3wt%, crome metal 3wt%, copper
Powder 2wt%, ferrotianium 3wt%, feldspar 0.5wt%, sodium titanate 4wt% and rutile 40wt%, surplus are 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%, manganese iron 4wt%, nickel powder 3wt%, crome metal 3wt%, copper powder
2wt%, ferrotianium 3wt%, feldspar 2wt%, sodium titanate 4wt% and rutile 35wt%, surplus are 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%, manganese iron 2wt%, nickel powder 3.5wt%, crome metal 3wt%, copper
Powder 2.3wt%, ferrotianium 3wt%, feldspar 0.5wt%, sodium titanate 4wt% and rutile 37.5wt%, surplus are iron powder.
Preferably, the medicinal powder core accounts for 12~18wt% of flux-cored wire gross mass.
Preferably, the steel crust includes following component: 0.02~0.04wt% of C, 0.15~0.35wt% of Mn,
Si≤0.035wt%, S≤0.015wt%, P≤0.017wt%, Al≤0.05wt% and N≤0.005wt%, surplus be Fe and
Inevitable impurity.
Preferably, the steel crust includes following component: 0.02~0.035wt% of C, Mn 0.15~
0.35wt%, Si≤0.35wt%, S≤0.015wt%, P≤0.017wt%, Al≤0.05wt% and N≤0.005wt%, it is remaining
Amount is Fe and inevitable impurity.
Preferably, the steel crust includes following component: C:0.025%, Mn:0.22%, Si:0.0082%, S:
0.0056%, P:0.010%, Al:0.018% and N:0.0023%, surplus are Fe and inevitable impurity.
The second object of the present invention, which is to provide, a kind of exempts from the coating bridge steel preparation method of weather-proof flux-cored wire.
Technical solution is: a kind of to exempt from the coating bridge steel preparation method of weather-proof flux-cored wire, comprising the following steps:
Before mixing each component of medicinal powder core, each medicinal powder is first subjected to sieving processing with 80 meshes, then by it
It after being uniformly mixed according to a ratio, is placed on steel crust, wraps up or roll into silk and is welded through the medicine core of drawing tube reducing to predetermined dimension
Silk.
Inventive principle:
Ferro-boron: B can inhibit the generation of crystal boundary pro-eutectoid ferrite, and suitable boron, which is added, can be improved the intensity of deposited metal,
But low temperature impact properties decline afterwards as the increase of B mass fraction first rises, therefore the additional amount of ferro-boron is in medicinal powder.
Molybdenum-iron: can refine crystal grain, improve intensity, harden ability, improve the removability of slag, improve arc stability, but molybdenum
Too high levels can be such that toughness deteriorates.
Fluoride: adjusting the fusing point and viscosity of slag, improves the removability of slag, reduces the content of Diffusible Hydrogen In Deposited Metal,
Zircon sand: mainly play slag making, improve removability of slag energy.
Ferrosilicon: silicon is deoxidier, can refine molten drop, improves arc stability, improves the burn-off rate of welding wire, is improved molten
The yield point and tensile strength of metallisation.But too high levels will lead to that intensity is excessively high, toughness decline.
Electrolytic manganese: manganese not only can also have the function of desulfurization with silicon together combined deoxidation, suitable manganese element, can be with
Improve the intensity of deposited metal.Manganese content is too low in medicinal powder core will lead to that intensity is insufficient, deoxidation is insufficient, and too high levels will lead to
Weld metal impact flexibility deteriorates.
Nickel powder: nickel can reduce the ductile-brittle transition temperature of weld metal, under certain condition, with the increase of nickel, intensity
It improves, low-temperature impact toughness improves significantly, while nickel has higher corrosion resistance to soda acid, at high temperature
There are antirust and temperature capacity；But Ni too high levels, it will increase the hot cracking tendency of deposited metal.
Crome metal: Cr is one of main weatherability element, play the role of to the raising of deposited metal tensile strength it is very big, but
It is too high levels, will cause plasticity, impact flexibility is substantially reduced.
Copper powder: copper can improve the intensity and toughness of deposited metal, especially raising atmospheric corrosion resistance.The disadvantage is that in heat
It is easy to produce when processing hot-short.
Ferrotianium: Ti is strong deoxidier.It can promote the formation of needle-shaped iron element, refine crystal grain, and play the role of slag making.
Feldspar: it is mainly used for slag making, stablizes electric arc, refinement molten drop, improve restarting performance, but too high levels will increase
The fusing point and viscosity of slag, make the removability of slag be deteriorated.
Sodium titanate: it is mainly used for slag making, stablizes electric arc, improve removability of slag energy.
Rutile: it mainly plays slag making, stablize electric arc, improve appearance of weld, improve removability of slag energy, reduce the effects of splashing.
Iron powder: being conducive to medicinal powder and be uniformly distributed, and the deposition efficiency and arc stability of welding can be improved.
In the present invention, steel crust is that width is 12~16mm and the mild steel steel band with a thickness of 0.6~1.0mm；It is described
Flux-cored wire diameter is 1.2~2.4mm.
The utility model has the advantages that
Welding arc stablility of the present invention, small, the de- slag that splashes are easy, and appearance of weld is beautiful, is suitable for all-position welding, weld seam
Mechanical property it is good, -40 DEG C of impact flexibility are greater than 80J, and have very strong corrosion resistance.
Deposited metal mechanical property is tensile strength >=400Mpa, yield strength >=510Mpa, elongation percentage >=22%, -40
DEG C impact >=80J, atmospheric corrosion resistance index I >=6.5.
Specific embodiment
The present invention is further illustrated combined with specific embodiments below.
Embodiment 1
The mass percent of medicinal powder core each component is as follows: ferro-boron 4%, molybdenum-iron 0.05%, fluoride 2.5%, zircon sand
2.5%, magnesium powder 4%, quartz sand 2.5%, ferrosilicon 5%, electrolytic manganese 14%, manganese iron 2%, nickel powder 3%, crome metal 3%, copper powder
2%, ferrotianium 3%, feldspar 0.5%, sodium titanate 4%, rutile 40%, surplus are iron powder.
The ingredient of carbon steel steel band are as follows: C:0.025%, Mn:0.22%, Si:0.0082%, S:0.0056%, P:
0.010%, Al:0.018% and N:0.0023%, surplus are iron and impurity.
Before mixing each component of medicinal powder core, each medicinal powder is first subjected to sieving processing with 80 meshes, then by it
It after being uniformly mixed according to a ratio, is placed on steel crust, wraps up or roll into silk and is welded through the medicine core of drawing tube reducing to predetermined dimension
Silk.
Embodiment 2
The mass percent of medicinal powder core each component is as follows: ferro-boron 4%, molybdenum-iron 0.05%, fluoride 1.5%, zircon sand
1.5%, magnesium powder 4%, quartz sand 3%, ferrosilicon 5%, electrolytic manganese 12%, manganese iron 4%, nickel powder 3%, crome metal 3%, copper powder 2%,
Ferrotianium 3%, feldspar 2%, sodium titanate 4%, rutile 35%, surplus are iron powder.
Other steps are same as Example 1.
Embodiment 3
The mass percent of medicinal powder core each component is as follows: ferro-boron 4%, molybdenum-iron 0.05%, fluoride 2.5%, zircon sand
1.5%, magnesium powder 4%, quartz sand 3%, ferrosilicon 5%, electrolytic manganese 14%, manganese iron 2%, nickel powder 3.5%, crome metal 3%, copper powder
2.3%, ferrotianium 3%, feldspar 0.5%, sodium titanate 4%, rutile 37.5%, surplus are iron powder.
Other steps are same as Example 1.
That implements 1-3 exempts from coating bridge steel weathering steel flux-cored wire, and when being welded using DC reverse connection, arc stability flies
It splashes small, de- slag to be easy, appearance of weld is beautiful, is suitable for all-position welding.Deposited metal composition are as follows: C:0.042%, Mn:
1.17%, Si:0.24%, S:0.0076%, P:0.0089%, Cr:0.42%, Ni:0.55%, Cu:0.36%.Deposited metal
Mechanical property are as follows: 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.
Of the invention exempts from the weather-proof flux-cored wire of coating bridge steel, and being suitable for tensile strength rank is 500MPa or more high resistance to
The welding for waiting steel, especially suitable for fields such as bridge, rail truck, ships.
Claims (11)
1. one kind exempts from the weather-proof flux-cored wire of coating bridge steel, it is made of steel crust and medicinal powder core, which includes following
Constituent: 2~8wt% of ferro-boron, 0.01~2wt% of molybdenum-iron, 1~6wt% of fluoride, 1.5~8wt% of zircon sand, magnesium powder 2~
7wt%, 2~5wt% of quartz sand, 2~8wt% of ferrosilicon, 5~19wt% of electrolytic manganese, 1~5wt% of manganese iron, nickel powder 1~6%, gold
Belong to 1~8wt% of chromium, 1~8wt% of copper powder, 2~9wt% of ferrotianium, 0.1~5wt% of feldspar, 2~8wt% of sodium titanate and rutile
20~40wt%, surplus are iron powder.
2. coating bridge steel according to claim 1 of exempting from is with weather-proof flux-cored wire, it is characterised in that the medicinal powder core component
Are as follows: 2~8wt% of ferro-boron, 0.01~2wt% of molybdenum-iron, fluoride 1.5-2.5wt%, zircon sand 1.5-2.5wt%, magnesium powder 2~
7wt%, quartz sand 2.5-3wt%, 2~8wt% of ferrosilicon, electrolytic manganese 12-14wt%, manganese iron 2-4wt%, nickel powder 3-3.5wt%,
1~8wt% of crome metal, copper powder 2-2.3wt%, 2~9wt% of ferrotianium, feldspar 0.5-2wt%, 2~8wt% of sodium titanate and golden red
Stone 35-40wt%, surplus are iron powder.
3. coating bridge steel according to claim 2 of exempting from is with weather-proof flux-cored wire, it is characterised in that the medicinal powder core component
Are as follows: 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%, manganese iron 2wt%, nickel powder 3wt%, crome metal 3wt%, copper powder 2wt%, ferrotianium
3wt%, feldspar 0.5wt%, sodium titanate 4wt% and rutile 40wt%, surplus are iron powder.
4. coating bridge steel according to claim 2 of exempting from is with weather-proof flux-cored wire, it is characterised in that the medicinal powder core component
Are as follows: 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%, manganese iron 4wt%, nickel powder 3wt%, crome metal 3wt%, copper powder 2wt%, ferrotianium 3wt%, length
Stone 2wt%, sodium titanate 4wt% and rutile 35wt%, surplus are iron powder.
5. coating bridge steel according to claim 2 of exempting from is with weather-proof flux-cored wire, it is characterised in that the medicinal powder core component
Are as follows: 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%, manganese iron 2wt%, nickel powder 3.5wt%, crome metal 3wt%, copper powder 2.3wt%, ferrotianium
3wt%, feldspar 0.5wt%, sodium titanate 4wt% and rutile 37.5wt%, surplus are iron powder.
6. -5 any described exempt from coating bridge steel with weather-proof flux-cored wire according to claim 1, it is characterised in that: the medicinal powder
Core accounts for 12~18wt% of flux-cored wire gross mass.
7. -5 any described exempt from coating bridge steel with weather-proof flux-cored wire according to claim 1, it is characterised in that the steel
Crust includes following component: 0.02~0.04wt% of C, 0.15~0.35wt% of Mn, Si≤0.035wt%, S≤
0.015wt%, P≤0.017wt%, Al≤0.05wt% and N≤0.005wt%, surplus are Fe and inevitable impurity.
8. coating bridge steel according to claim 6 of exempting from is with weather-proof flux-cored wire, it is characterised in that the outer suitcase of the steel
Include following component: 0.02~0.04wt% of C, 0.15~0.35wt% of Mn, Si≤0.035wt%, S≤0.015wt%, P≤
0.017wt%, Al≤0.05wt% and N≤0.005wt%, surplus are Fe and inevitable impurity.
9. coating bridge steel according to claim 7 of exempting from is with weather-proof flux-cored wire, it is characterised in that the outer suitcase of the steel
Include following component: 0.02~0.035wt% of C, 0.15~0.35wt% of Mn, Si:0.0082%, S≤0.015wt%, P≤
0.017wt%, Al≤0.05wt% and N≤0.005wt%, surplus are Fe and inevitable impurity.
10. coating bridge steel according to claim 9 of exempting from is with weather-proof flux-cored wire, it is characterised in that the outer suitcase of the steel
Include following component: C:0.025%, Mn:0.22%, Si:0.0082%, S:0.0056%, P:0.010%, Al:0.018% and
N:0.0023%, surplus are Fe and inevitable impurity.
11. one kind is as claimed in claim 7 to exempt from the coating bridge steel preparation method of weather-proof flux-cored wire, comprising the following steps:
Before mixing each component of medicinal powder core, each medicinal powder is first subjected to sieving processing with 80 meshes, then mixes it according to the ratio
After closing uniformly, it is placed on steel crust, wraps up or roll into silk and the flux-cored wire through drawing tube reducing to predetermined dimension.
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