CN103934592B - A core wire for up to 55kg weathering steel welding rod, coating and welding rod thereof and preparation method - Google Patents

A core wire for up to 55kg weathering steel welding rod, coating and welding rod thereof and preparation method Download PDF

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CN103934592B
CN103934592B CN201410158472.XA CN201410158472A CN103934592B CN 103934592 B CN103934592 B CN 103934592B CN 201410158472 A CN201410158472 A CN 201410158472A CN 103934592 B CN103934592 B CN 103934592B
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parts
solid constituent
welding rod
coating
weathering steel
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CN103934592A (en
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杨光磊
吴宝鑫
仇陆弟
刘亮
公茂涛
赵仕超
陆伟康
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PowerChina SPEM Co Ltd
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PowerChina SPEM Co Ltd
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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
    • 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
    • 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
    • B23K35/3601—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 with inorganic compounds as principal constituents
    • B23K35/3602—Carbonates, basic oxides or hydroxides
    • 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
    • B23K35/365—Selection of non-metallic compositions of coating 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
    • B23K35/404—Coated rods; Coated electrodes

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Nonmetallic Welding Materials (AREA)

Abstract

The invention discloses a kind of up to 55kg weathering steel welding rod, comprise core wire and coating, described coating is formed by solid constituent and waterglass mixing and stirring, and the mass fraction that described waterglass accounts for solid constituent is 22-24%.And solid constituent is according to mass parts meter, comprise following component: marble 20-30 part, fluorite 15-25 part, natural rutile 3-6 part, potassic feldspar 2-6 part, ferrotianium 3-6 part, mid-carbon fe-mn 2-6 part, ferrosilicon 2-5 part, carbon ferrochrome 1-2 part, nickel powder 1-2 part, copper powder 1-2 part, sodium alginate 0.5-1 part, iron powder 20-30 part.Welding rod weld deposit coefficient of the present invention is comparatively large, and processing property of electrode is splendid, and fusion penetration is moderate, splashes little, is shaped attractive in appearance; Weld metal has good atmospheric corrosion resistance, is applicable to the welded welding of the atmospheric corrosion resistances such as Q450NQR1 and offshore engineering.

Description

A core wire for up to 55kg weathering steel welding rod, coating and welding rod thereof and preparation method
Technical field
The present invention relates to field of welding material, be specifically related to a kind of core wire of up to 55kg weathering steel welding rod, coating and welding rod thereof and preparation method.
Background technology
Along with industrial expansion, the demand of various steel is increasing, facing to being exposed in malaria or the situation of metal material generation corrosion of offshore engineering, is more and more subject to the attention of industry Zhong Ge relevant unit.Corrosion not only brings infringement to steel construction, too increases heavy management, maintenance load, simultaneously in order to prevent corrosion from taking the method for periodically application also will consume a large amount of manpowers and fund.Weathering steel, because of its good atmospheric corrosion resistance, has again the serviceabilities such as good mechanics, welding and is widely used in the fields such as rolling stock, container, bridge, boats and ships, automobile, boiler, building.
At present, the major families of countries in the world weathering steel has Cu-P-Ni-Cr system, Mn-Cu-Cr-Ni system and Cu-Cr-Ni system.Cu and P is resistance to air, the most effective element of sea water intrusion, but Cu too high levels has hot-short problem, P too high levels has cold short problem, anti-corrosion effect can be strengthened along with finding that the appropriate combination of Cr, Ni and Cu, P adds, and also obtain more satisfied in the serviceabilities such as the intensity of steel and toughness.
Cu-Cr-Ni system weathering steel welding rod is also extensively paid attention to along with the development of these type of steel.Simultaneously in order to improve the welding productivity of welding rod and improve welding technological properties, each industrial circle has carried out large quantifier elimination to efficient weather proof irons steel welding rod, and kind is continually developed, and tends to seriation.
Summary of the invention
One of technical problem to be solved by this invention is the core wire providing a kind of up to 55kg weathering steel welding rod in order to solve the problems of the technologies described above;
The core wire that a kind of up to 55kg weathering steel welding rod uses, H08E dish unit selected by this core wire, and contained by core wire, the mass percent of element is as follows: C :≤0.10%, Si :≤0.030%, Mn:0.30-0.60%, S :≤0.020%, P :≤0.020%, all the other are Fe.
Two of technical problem to be solved by this invention is the coating providing a kind of up to 55kg weathering steel welding rod to use to solve the problems of the technologies described above;
The coating that up to 55kg weathering steel welding rod uses, is mixed by solid constituent and liquid components, described liquid components add the 22-24% that quality is solid constituent quality;
Described solid constituent, according to mass parts meter, comprises following component: marble 20-30 part, fluorite 15-25 part, natural rutile 3-6 part, potassic feldspar 2-6 part, ferrotianium 3-6 part, mid-carbon fe-mn 2-6 part, ferrosilicon 2-5 part, carbon ferrochrome 1-2 part, nickel powder 1-2 part, copper powder 1-2 part, sodium alginate 0.5-1 part, iron powder 20-30 part;
Described liquid components is waterglass.
In a preferred embodiment of the invention, described waterglass by pure sodium silicate and pure KP1 formulated according to mass ratio 1:1.
In a preferred embodiment of the invention, described solid constituent, according to mass parts meter, comprises following component:
30 parts, marble, 24 parts, fluorite, natural rutile 4 parts, potassic feldspar 2 parts, ferrotianium 3 parts, mid-carbon fe-mn 4 parts, ferrosilicon 3 parts, carbon ferrochrome 1.8 parts, nickel powder 1.2 parts, copper powder 1.2 parts, sodium alginate 0.8 part, iron powder 2 parts.
In a preferred embodiment of the invention, the mass ratio of described marble and fluorite is 1-1.5.
Three of technical problem to be solved by this invention is the preparation method providing above-mentioned coating.
The preparation method of the coating that a kind of up to 55kg weathering steel welding rod uses, comprise the following steps: by each for solid constituent raw material first after 40 object sieve, then solid constituent is made after mixing in proportion, waterglass is added according to 22 ~ 24% of solid constituent quality, after stirring again, i.e. obtained coating.
Four of technical problem to be solved by this invention is to provide a kind of up to 55kg weathering steel welding rod to solve the problems of the technologies described above;
A kind of up to 55kg weathering steel welding rod, be made up of the coating on core wire and coating core wire, H08E dish unit selected by described core wire, and contained by core wire, the mass percent of element is as follows: C :≤0.10%, Si :≤0.030%, Mn:0.30-0.60%, S :≤0.020%, P :≤0.020%, all the other are Fe;
Described coating is mixed by solid constituent and liquid components, described liquid components add the 22-24% that quality is solid constituent quality;
Described solid constituent, according to mass parts meter, comprises following component: marble 20-30 part, fluorite 15-25 part, natural rutile 3-6 part, potassic feldspar 2-6 part, ferrotianium 3-6 part, mid-carbon fe-mn 2-6 part, ferrosilicon 2-5 part, carbon ferrochrome 1-2 part, nickel powder 1-2 part, copper powder 1-2 part, sodium alginate 0.5-1 part, iron powder 20-30 part;
Described liquid components is waterglass.
Five of technical problem to be solved by this invention is the preparation method providing above-mentioned welding rod.
A kind of preparation method of up to 55kg weathering steel welding rod, comprise the following steps: by each for solid constituent raw material first after 40 object sieve, then solid constituent is made after mixing in proportion, waterglass is added according to 22 ~ 24% of solid constituent quality, after stirring again, by conventional welding rod production equipment, its extrusion is prepared welding rod on core wire.
By technique scheme, the invention has the beneficial effects as follows:
Welding rod weld deposit coefficient of the present invention is comparatively large, and processing property of electrode is splendid, and fusion penetration is moderate, splashes little, is shaped attractive in appearance; Weld metal has good atmospheric corrosion resistance, is applicable to the welded welding of the atmospheric corrosion resistances such as Q450NQR1 and offshore engineering.
Detailed description of the invention
The technological means realized to make the present invention, creation characteristic, reaching object and effect is easy to understand, setting forth the present invention further.
The core wire that a kind of up to 55kg weathering steel welding rod uses, H08E dish unit selected by this core wire, and contained by core wire, the mass percent of element is as follows: C :≤0.10%, Si :≤0.030%, Mn:0.30-0.60%, S :≤0.020%, P :≤0.020%, all the other are Fe.
The coating that up to 55kg weathering steel welding rod uses, is mixed by solid constituent and liquid components, described liquid components add the 22-24% that quality is solid constituent quality;
Described solid constituent, according to mass parts meter, comprises following component: marble 20-30 part, fluorite 15-25 part, natural rutile 3-6 part, potassic feldspar 2-6 part, ferrotianium 3-6 part, mid-carbon fe-mn 2-6 part, ferrosilicon 2-5 part, carbon ferrochrome 1-2 part, nickel powder 1-2 part, copper powder 1-2 part, sodium alginate 0.5-1 part, iron powder 20-30 part;
Above-mentioned solid constituent, according to mass parts meter, also can be following component: 30 parts, marble, 24 parts, fluorite, natural rutile 4 parts, potassic feldspar 2 parts, ferrotianium 3 parts, mid-carbon fe-mn 4 parts, ferrosilicon 3 parts, carbon ferrochrome 1.8 parts, nickel powder 1.2 parts, copper powder 1.2 parts, sodium alginate 0.8 part, iron powder 2 parts.
In coating of the present invention, the Main Function of each component is as follows:
1) marble (CaCO 3>=97%): what marble mainly played act as slag former and gas-forming agent, larger on the impact of welding metallurgical reaction.Decompose the CaO produced and belong to basic anhydride.The basicity of slag can be improved, strengthen the de-S of slag, de-P ability.But with the interfacial tension also increased between the surface tension of slag and slag and deposite metal, alligatoring molten drop (when measuring excessive, blow force of arc is excessive, splashes and increases).Through overtesting and comprehensive favourable and unfavorable factor, determine that marmorean addition is within the scope of 20-30 part.
2) fluorite (CaF 2>=95%): because iron powder addition is more in iron powder electrode, cause the temperature reducing molten bath, the mobility of welding rod is deteriorated.Fluorite mainly plays slag making and shoddye effect. and it can reduce the fusing point of basic clinker, viscosity and table tension force, increases the mobility of slag, also can reduce the hydrogen-sucking amount of liquid metals.But at CaCO 3content one timing, CaF 2when addition is too much, will the stability of welding arc be affected, the molten drop diameter in welding process is increased.Therefore according to CaCO 3/ CaF 2optimum ratio 1-1.5, consider CaF simultaneously 2to welding technological properties influence factor, determine that the addition of fluorite is in the scope of 15-25 part.
3) natural rutile (TiO 2>=90%): natural rutile has stabilising arc and fluxing effect, the fusing point of adjustable slag, viscosity, surface tension and mobility.Appropriate TiO 2be conducive to all-position welding, improve appearance of weld, reduce and splash, improve the removability of slag.Too much TiO 2by improving the fusing point of slag, reduce the solidification temperature range of slag, bath gas resistance of overflowing is increased, the defect such as easily form pore, be mingled with.
Through overtesting and comprehensive favourable and unfavorable factor, determine that the addition of natural rutile is within the scope of 3-6 part.
4) potassic feldspar (KAlSi 3o 8>=90%): potassic feldspar plays slag making stabilising arc and improves restarting performance, has shoddye effect to basic slag system, can molten drop oxygenation be given simultaneously, reduce surface tension, play the effect of refinement molten drop.
But de-slag can be made when addition is too much to be deteriorated, and the easy moisture absorption of potassic feldspar, unfavorable to the diffusible hydrogen content of welding rod.Through overtesting and comprehensive favourable and unfavorable factor, determine that the addition of potassic feldspar is in the scope of 2-6 part.
5) ferrotianium (Ti:35 ~ 45%): Ti plays deoxidation, decreases the oxygen content in weld seam, generates TiN as crystallization nuclei, promotes that weld seam becomes fine grain structure.When Ti is too much, also having a negative impact of Resistance of Weld Metal impact flexibility.Through overtesting and comprehensive favourable and unfavorable factor, determine that the addition of ferrotianium is within the scope of 3-6 part.
6) mid-carbon fe-mn (Mn:78 ~ 85%): mainly play component controlling effect in Mn welding rod prescription.Product after Mn deoxidation is MnO, belongs to basic anhydride, and it improves the basicity of slag, plays slag making simultaneously.Through overtesting, the addition of mid-carbon fe-mn is within the scope of 2-6 part.
7) ferrosilicon (Si:43 ~ 47%): mainly play component controlling effect in the welding rod prescription of Si.Product after deoxidation is silica, belongs to acidic oxide, and its reduces the activity of FeO in the basicity of slag and slag, plays fluxing effect simultaneously.Through overtesting, the addition of ferrosilicon is 2-5 part scope.
8) carbon ferrochrome (Cr:52 ~ 65%): carbon ferrochrome plays the effect of alloying constituent, transition Cr plays anti-oxidation, etch-proof effect, gives molten drop carburetting simultaneously, can play again the effect of refinement molten drop.Through overtesting, the addition of carbon ferrochrome is 1-2 part scope.
9) nickel powder (Ni): Ni improves corrosion resistant ability, meets the performance requirement of weld metal, through overtesting, the addition of nickel powder is 1-2 part scope.
10) copper powder (Cu): Cu is resistance to air, the most effective element of sea water intrusion, but Cu too high levels has hot-short problem, and through overtesting, the addition of nickel powder is 1-2 part scope.
11) sodium alginate: the extrusion performance improving welding rod.Through overtesting, the addition of sodium alginate is 0.5-1 part scope.
12) iron powder (Fe): add appropriate iron powder in welding rod prescription, have reduction bath temperature, increases crystallization rate, is conducive to obtaining fine grain seam organization.Also can improve the deposition efficiency of welding rod simultaneously, and improve welding technological properties.But too much iron powder may make weld seam produce pore.Through overtesting, the addition of iron powder controls within the scope of 20-30 part.
Liquid components: waterglass (1:1 potassium sodium, modulus 3.1M, Baume degrees 43 ' Be): this kind is conducive to the stable of welding rod arc, is applicable to again the extrusion of this formula welding rod simultaneously.Through overtesting, the addition of 1:1 potassium sodium, 3.1M, 43 ' Be waterglass accounts for the 22-24% of solid constituent quality;
Waterglass is mixture, by pure sodium silicate and pure KP1 formulated according to mass ratio 1:1, also directly can buy to waterglass manufacturer.
The preparation method of the coating that a kind of up to 55kg weathering steel welding rod uses, comprise the following steps: by each for solid constituent raw material first after 40 object sieve, then solid constituent is made after mixing in proportion, waterglass is added according to 22 ~ 24% of solid constituent quality, after stirring again, i.e. obtained coating.
A kind of up to 55kg weathering steel welding rod, be made up of the coating on core wire and coating core wire, H08E dish unit selected by described core wire, and contained by core wire, the mass percent of element is as follows: C :≤0.10%, Si :≤0.030%, Mn:0.30-0.60%, S :≤0.020%, P :≤0.020%, all the other are Fe;
Described coating is mixed by solid constituent and liquid components, described liquid components add the 22-24% that quality is solid constituent quality;
Described solid constituent, according to mass parts meter, comprises following component: marble 20-30 part, fluorite 15-25 part, natural rutile 3-6 part, potassic feldspar 2-6 part, ferrotianium 3-6 part, mid-carbon fe-mn 2-6 part, ferrosilicon 2-5 part, carbon ferrochrome 1-2 part, nickel powder 1-2 part, copper powder 1-2 part, sodium alginate 0.5-1 part, iron powder 20-30 part;
Described liquid components is waterglass.
A kind of preparation method of up to 55kg weathering steel welding rod, comprise the following steps: by each for solid constituent raw material first after 40 object sieve, then solid constituent is made after mixing in proportion, waterglass is added according to 22 ~ 24% of solid constituent quality, after stirring again, by conventional welding rod production equipment, its extrusion is prepared welding rod on core wire.
Embodiment 1
The coating that a kind of up to 55kg weathering steel welding rod of the present embodiment uses, described coating is mixed by solid constituent and liquid components, add that quality is solid constituent quality 22% of described liquid components;
Described solid constituent, according to mass parts meter, comprises following component: marble: 25 parts, fluorite: 25 parts, natural rutile: 6 parts, potassic feldspar: 2 parts, ferrotianium: 3 parts, mid-carbon fe-mn: 5 parts, ferrosilicon: 4 parts, carbon ferrochrome: 1.8 parts, nickel powder: 1.2 parts, copper powder: 1.2 parts, sodium alginate: 0.8 part, iron powder: 25 parts.
Described liquid components is the waterglass of 1:1 potassium sodium, modulus 3.1M, Baume degrees 43 ' Be,
The core wire of the welding rod of this embodiment after melting, through chemical analysis method survey core wire chemical composition mass percent for: contained by core wire, the mass percent of element is as follows: C :≤0.10%, Si :≤0.030%, Mn:0.30-0.60%, S :≤0.020%, P :≤0.020%, all the other are Fe;
After the coating raw material of above-mentioned solid constituent are mixed, below 40 object sieve to 40 orders, after solid constituent stirs, add the sodium silicate of the 40 ~ 45Be ˊ accounting for solid constituent mass content 20 ~ 30%, after stirring again, by conventional welding rod production equipment, its extrusion is prepared welding rod on above-mentioned core wire.The welding rod smooth surface produced, yield rate be high, without acceptance of persons.
The deposited metal composition of welding rod is detected: C:0.073%, Si:0.41%, Mn:1.30%, S:0.013%, P:0.016%, Cr:0.46%, Ni:0.47%, Cu:0.45%, Fe are surplus.
Ambient temperature mechanical properties: R m: 673MPa, R el: 560MPa;-40 DEG C of average KV 2: 88J.
Embodiment 2
The coating that a kind of up to 55kg weathering steel welding rod of the present embodiment uses, described coating is mixed by solid constituent and liquid components, add that quality is solid constituent quality 23% of described liquid components;
Described solid constituent, according to mass parts meter, comprises following component: marble: 30 parts, fluorite: 24 parts, natural rutile: 4 parts, potassic feldspar: 2 parts, ferrotianium: 3 parts, mid-carbon fe-mn: 4 parts, ferrosilicon: 3 parts, carbon ferrochrome: 1.8 parts, nickel powder: 1.2 parts, copper powder: 1.2 parts, sodium alginate: 0.8 part, iron powder: 2 parts.
Other condition is identical with embodiment 1.
The deposited metal composition of welding rod is detected: C:0.068%, Si:0.39%, Mn:1.26%, S:0.012%, P:0.015%, Cr:0.43%, Ni:0.46%, Cu:0.44%, Fe are surplus.
Ambient temperature mechanical properties: tensile strength R m: 647MPa, yield strength R el: 546MPa;-40 DEG C of average impact absorb merit (KV 2): 105J.
Embodiment 3
The coating that a kind of up to 55kg weathering steel welding rod of the present embodiment uses, described coating is mixed by solid constituent and liquid components, add that quality is solid constituent quality 24% of described liquid components;
Described solid constituent, according to mass parts meter, comprises following component: marble: 30 parts, fluorite: 20 parts, natural rutile: 5 parts, potassic feldspar: 3 parts, ferrotianium: 3 parts, mid-carbon fe-mn: 5 parts, ferrosilicon: 4 parts, carbon ferrochrome: 1.8 parts, nickel powder: 1.2 parts, copper powder: 1.2 parts, sodium alginate: 0.8 part, iron powder: 25 parts.
The deposited metal composition of welding rod is detected: C:0.065%, Si:0.30%, Mn:1.22%, S:0.010%, P:0.015%, Cr:0.41%, Ni:0.45%, Cu:0.42%, Fe are surplus.
Ambient temperature mechanical properties: R m: 613MPa, R el: 521MPa;-40 DEG C of average impact absorb merit (KV 2): 101J.
Q450NQR1 steel chemical composition required value is required: C≤0.12%, Si≤0.75%, Mn:0.70-1.50%, S :≤0.008%, P :≤0.025%, Cr:0.30-1.25%, Ni:0.12-0.65%, Cu:0.20-0.55% in national standard.
Q450NQR1 steel ambient temperature mechanical properties: R m:>=530MPa, R el:>=450MPa;-40 DEG C of average KV 2:>=60J.
During the welding rod DC reverse connection welding of comparative example 1-3, although slightly difference in processing performance, overall operation performance is good, and fusion penetration is moderate, splashes little, is shaped attractive in appearance, and wherein the welding rod composite technology performance of example 2 is best, and weld deposit coefficient is about 110%.
The deposited metal composition of detection gained welding rod, mechanical performance can meet the welded welding requirements of the atmospheric corrosion resistances such as Q450NQR1 and offshore engineering.
Result of the test shows: not only processing performance is splendid for iron powder weathering steel steel electrode of the present invention, and welding rod deposition efficiency is high.Be applicable to the welded welding of the atmospheric corrosion resistances such as Q450NQR1 and offshore engineering.
More than show and describe general principle of the present invention and principal character and advantage of the present invention.The technical staff of the industry should understand; the present invention is not restricted to the described embodiments; what describe in above-described embodiment and description just illustrates principle of the present invention; without departing from the spirit and scope of the present invention; the present invention also has various changes and modifications, and these changes and improvements all fall in the claimed scope of the invention.Application claims protection domain is defined by appending claims and equivalent thereof.

Claims (7)

1. the coating that uses of up to 55kg weathering steel welding rod, it is characterized in that, described coating is mixed by solid constituent and liquid components, described liquid components add the 22-24% that quality is solid constituent quality; Described solid constituent, according to mass parts meter, comprises following component: marble 20-30 part, fluorite 15-25 part, natural rutile 3-6 part, potassic feldspar 2-6 part, ferrotianium 3-6 part, mid-carbon fe-mn 2-6 part, ferrosilicon 2-5 part, carbon ferrochrome 1-2 part, nickel powder 1-2 part, copper powder 1-2 part, sodium alginate 0.5-1 part, iron powder 20-30 part; Described liquid components is waterglass.
2. the coating that uses of a kind of up to 55kg weathering steel welding rod according to claim 1, is characterized in that, described waterglass by pure sodium silicate and pure KP1 formulated according to mass ratio 1:1.
3. the coating that uses of a kind of up to 55kg weathering steel welding rod according to claim 1, it is characterized in that, described solid constituent, according to mass parts meter, comprises following component: 30 parts, marble, 24 parts, fluorite, natural rutile 4 parts, potassic feldspar 2 parts, ferrotianium 3 parts, mid-carbon fe-mn 4 parts, ferrosilicon 3 parts, carbon ferrochrome 1.8 parts, nickel powder 1.2 parts, copper powder 1.2 parts, sodium alginate 0.8 part, iron powder 2 parts.
4. the coating that uses of a kind of up to 55kg weathering steel welding rod according to claim 1, it is characterized in that, the mass ratio of described marble and fluorite is 1-1.5.
5. a preparation method for the coating that a kind of up to 55kg weathering steel welding rod described in any one of Claims 1-4 claim uses, is characterized in that, comprise the following steps:
By each for solid constituent raw material first after 40 object sieve, make solid constituent after then mixing in proportion, add waterglass according to 22 ~ 24% of solid constituent quality, then after stirring, i.e. obtained coating.
6. a up to 55kg weathering steel welding rod, be made up of the coating on core wire and coating core wire, it is characterized in that: H08E dish unit selected by described core wire, and contained by core wire, the mass percent of element is as follows: C :≤0.10%, Si :≤0.030%, Mn:0.30-0.60%, S :≤0.020%, P :≤0.020%, all the other are Fe; Described coating is mixed by solid constituent and liquid components, described liquid components add the 22-24% that quality is solid constituent quality; Described solid constituent, according to mass parts meter, comprises following component: marble 20-30 part, fluorite 15-25 part, natural rutile 3-6 part, potassic feldspar 2-6 part, ferrotianium 3-6 part, mid-carbon fe-mn 2-6 part, ferrosilicon 2-5 part, carbon ferrochrome 1-2 part, nickel powder 1-2 part, copper powder 1-2 part, sodium alginate 0.5-1 part, iron powder 20-30 part; Described liquid components is waterglass.
7. a preparation method for a kind of up to 55kg weathering steel welding rod according to claim 6, is characterized in that, comprise the following steps:
By each for the solid constituent of coating raw material first after 40 object sieve, then solid constituent is made after mixing in proportion, add waterglass according to 22 ~ 24% of solid constituent quality, then after stirring, by conventional welding rod production equipment, its extrusion is prepared welding rod on core wire.
CN201410158472.XA 2014-04-18 2014-04-18 A core wire for up to 55kg weathering steel welding rod, coating and welding rod thereof and preparation method Active CN103934592B (en)

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CN107598414B (en) * 2017-10-26 2020-07-17 天津市金桥焊材集团股份有限公司 Welding rod for marine atmosphere corrosion resistant steel
CN108080814A (en) * 2017-12-22 2018-05-29 重庆瑜煌电力设备制造有限公司 A kind of weathering steel welding rod and preparation method thereof
CN109483085A (en) * 2018-12-20 2019-03-19 湖南湘工环保科技开发有限公司 The fine-grained steel welding rod of acid corrosion-resistant
CN110977240A (en) * 2019-11-18 2020-04-10 天津大桥焊材集团有限公司 Welding rod special for 80 kg-grade weathering steel and production method thereof
CN110802342B (en) * 2019-12-03 2021-01-01 四川西冶新材料股份有限公司 High-strength weathering steel Q550NQR1 and Q550qNH matched welding rod
CN111604616A (en) * 2020-06-18 2020-09-01 昂科万德(武汉)科技有限公司 600 MPa-level fire-resistant weather-resistant steel welding rod and preparation method thereof
CN111843291A (en) * 2020-08-13 2020-10-30 天津市永昌焊丝有限公司 High-strength corrosion-resistant low-nickel welding rod
CN112643250B (en) * 2020-12-09 2022-09-06 武汉铁锚焊接材料股份有限公司 Welding rod for 55 kg-grade weathering steel and application thereof
CN115194362B (en) * 2021-04-12 2024-05-28 天津市金桥焊材集团股份有限公司 Low smoke 55 kg-level weather-resistant flux-cored wire
CN113894464B (en) * 2021-10-15 2023-04-21 江苏太平洋联合焊接材料有限公司 Preparation method of hot-strength steel welding electrode and quality inspection tool
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CN114434043B (en) * 2022-01-24 2024-01-26 昆山京群焊材科技有限公司 Welding rod for sulfuric acid reducing bacteria corrosion resistant steel

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