CN103934592A - Core wire and coating of 55-kilogram-level weather resistant steel welding rod, welding rod and preparing method - Google Patents

Core wire and coating of 55-kilogram-level weather resistant steel welding rod, welding rod and preparing method Download PDF

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Publication number
CN103934592A
CN103934592A CN201410158472.XA CN201410158472A CN103934592A CN 103934592 A CN103934592 A CN 103934592A CN 201410158472 A CN201410158472 A CN 201410158472A CN 103934592 A CN103934592 A CN 103934592A
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parts
welding rod
coating
solid constituent
core wire
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CN103934592B (en
Inventor
王尧俊
陆伟康
仇陆弟
王蒙
刘亮
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SHANGHAI POWER EQUIPMENT MANUFACTURE CO Ltd
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SHANGHAI POWER EQUIPMENT MANUFACTURE CO Ltd
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Classifications

    • 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 55-kilogram-level weather resistant steel welding rod which comprises a core wire and a coating. The coating is formed by solid components and water glass in an evenly-mixed-and-stirred mode, the mass percent of the water glass to the solid components ranges from 22% to 24%, and the solid components comprise, by mass, 20-30 parts of marble, 15-25 parts of fluorite, 3-6 parts of natural rutile, 2-6 parts of potassium feldspar, 3-6 parts of ferrotitanium, 2-6 parts of mid-carbon ferromanganese, 2-5 parts of silicon iron, 1-2 parts of carbon ferrochromium, 1-2 parts of nickel powder, 1-2 parts of copper powder, 0.5-1 part of sodium alginate, and 20-30 parts of iron powder. According to the welding rod, the weld joint deposition coefficient is large, the process performance is good, the fusion depth is proper, splashing is small, and the formed appearance is attractive; weld joint metal has the good atmosphere corrosion resistance, and the welding rod is suitable for welding of welding structures of atmosphere corrosion resistant and offshore engineering like Q450NQR1.

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 the 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, has also increased heavy management, maintenance load, and the while takes the method for periodically application also will consume a large amount of manpowers and fund in order to prevent corrosion.Resistance to Hou Gang, because of its good atmospheric corrosion resistance, has again the good serviceability such as mechanics, welding and is widely used in the fields such as rolling stock, container, bridge, boats and ships, automobile, boiler, building.
At present, the main series of the resistance to Hou Gang in countries in the world has Cu-P-Ni-Cr system, Mn-Cu-Cr-Ni system and Cu-Cr-Ni system.Cu and P are resistance to atmosphere, 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, can strengthen anti-corrosion effect along with finding that the appropriate combination of Cr, Ni and Cu, P adds, and in the serviceability such as intensity and toughness of steel, also obtain more satisfied.
Cu-Cr-Ni is that weathering steel welding rod is along with the development of these type of steel is also extensively paid attention to.In order to improve the welding productivity of welding rod and to improve welding technological properties, each industrial circle has carried out a large amount of research to efficient weather proof irons steel welding rod simultaneously, and kind is continually developed, and tends to seriation.
Summary of the invention
One of technical problem to be solved by this invention is to provide in order to solve the problems of the technologies described above a kind of core wire of up to 55kg weathering steel welding rod;
The core wire that a kind of up to 55kg weathering steel welding rod uses, this core wire is selected H08E dish unit, and the mass percent of the contained element of core wire 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 provides a kind of up to 55kg weathering steel welding rod to use in order to solve the problems of the technologies described above is provided two of technical problem to be solved by this invention;
The coating that up to 55kg weathering steel welding rod uses, is mixed by solid constituent and liquid components, and the quality that adds of described liquid components is the 22-24% of 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 is formulated according to mass ratio 1:1 by pure sodium silicate and pure KP1.
In a preferred embodiment of the invention, described solid constituent, according to mass parts meter, comprises following component:
30 parts, marble, 24 parts, fluorite, 4 parts of natural rutiles, 2 parts of potassic feldspars, 3 parts of ferrotianiums, 4 parts of mid-carbon fe-mns, 3 parts of ferrosilicon, 1.8 parts of carbon ferrochromes, 1.2 parts of nickel powders, 1.2 parts of copper powders, 0.8 part of sodium alginate, 2 parts of iron powders.
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 to provide the preparation method of 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 solid constituent raw material first after 40 object sieve, then after mixing in proportion, make solid constituent, add waterglass according to 22～24% of solid constituent quality, after stirring again, make coating.
Four of technical problem to be solved by this invention is to provide in order to solve the problems of the technologies described above a kind of up to 55kg weathering steel welding rod;
A kind of up to 55kg weathering steel welding rod, made by the coating on core wire and coating core wire, described core wire is selected H08E dish unit, and the mass percent of the contained element of core wire 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, and the quality that adds of described liquid components is the 22-24% of 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 to provide the preparation method of above-mentioned welding rod.
A kind of preparation method of up to 55kg weathering steel welding rod, comprise the following steps: by each solid constituent raw material first after 40 object sieve, then after mixing in proportion, make solid constituent, add waterglass according to 22～24% of solid constituent quality, after stirring again, by conventional welding rod production equipment, its extrusion is prepared to 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 larger, 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
For technological means, creation characteristic that the present invention is realized, reach object and effect is easy to understand, further set forth the present invention.
The core wire that a kind of up to 55kg weathering steel welding rod uses, this core wire is selected H08E dish unit, and the mass percent of the contained element of core wire 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, and the quality that adds of described liquid components is the 22-24% of 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, can be also following component: 30 parts, marble, 24 parts, fluorite, 4 parts of natural rutiles, 2 parts of potassic feldspars, 3 parts of ferrotianiums, 4 parts of mid-carbon fe-mns, 3 parts of ferrosilicon, 1.8 parts of carbon ferrochromes, 1.2 parts of nickel powders, 1.2 parts of copper powders, 0.8 part of sodium alginate, 2 parts of iron powders.
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 producing and belong to basic anhydride.The basicity of slag be can improve, the de-S of slag, de-P ability strengthened.But with the interfacial tension also increasing between surface tension and slag and the deposite metal of slag, alligatoring molten drop when excessive (measure, blow force of arc is excessive, the increase of splashing).Through overtesting comprehensive favourable and unfavorable factor, determine that marmorean addition is within the scope of 20-30 part.
2) fluorite (CaF 2>=95%): in iron powder electrode, because iron powder addition is more, caused reducing the temperature in molten bath, made the mobility variation of welding rod.Fluorite mainly plays slag making and shoddye effect. and it can reduce fusing point, viscosity and the table tension force of basic clinker, 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 affect the stability of welding arc, 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, fusing point, viscosity, surface tension and the mobility of capable of regulating slag.Appropriate TiO 2be conducive to all-position welding, improve appearance of weld, minimizing is splashed, and improves the removability of slag.Too much TiO 2to improve the fusing point of slag, dwindle the solidification temperature range of slag, internal gas effusion resistance in molten bath is increased, the defect such as easily form pore, be mingled with.
Through overtesting 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, and basic slag system is had to shoddye effect, can give molten drop oxygenation, reduce surface tension, play the effect of refinement molten drop simultaneously.
But when addition is too much, can make de-slag variation, and the easy moisture absorption of potassic feldspar, unfavorable to the diffusible hydrogen content of welding rod.Through overtesting 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, has reduced 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 can the having a negative impact of Resistance of Weld Metal impact flexibility.Through overtesting 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 the basicity that it improves 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 in the basicity of its reduction slag and slag, the activity of FeO 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 atmosphere, 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 that improves 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, there is reduction bath temperature, increase crystallization rate, be conducive to obtain fine grain seam organization.Also can improve the deposition efficiency of welding rod, and improve welding technological properties simultaneously.But too much iron powder may make weld seam produce pore.Through overtesting, the addition of iron powder is controlled 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, formulated according to mass ratio 1:1 by pure sodium silicate and pure KP1, also can directly 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 solid constituent raw material first after 40 object sieve, then after mixing in proportion, make solid constituent, add waterglass according to 22～24% of solid constituent quality, after stirring again, make coating.
A kind of up to 55kg weathering steel welding rod, made by the coating on core wire and coating core wire, described core wire is selected H08E dish unit, and the mass percent of the contained element of core wire 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, and the quality that adds of described liquid components is the 22-24% of 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 solid constituent raw material first after 40 object sieve, then after mixing in proportion, make solid constituent, add waterglass according to 22～24% of solid constituent quality, after stirring again, by conventional welding rod production equipment, its extrusion is prepared to 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, and the quality that adds of described liquid components is 22% of solid constituent quality;
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 is: the mass percent of the contained element of core wire 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, by 40 object sieve below 40 orders, after solid constituent stirs, add the sodium silicate of the 40～45Be ˊ that accounts for solid constituent mass content 20～30%, after stirring again, by conventional welding rod production equipment, its extrusion is prepared to welding rod on above-mentioned core wire.Welding rod smooth surface, the yield rate produced 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, and the quality that adds of described liquid components is 23% of solid constituent quality;
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 absorbing energy (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, and the quality that adds of described liquid components is 24% of solid constituent quality;
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 absorbing energy (KV 2): 101J.
In national standard, require Q450NQR1 steel chemical composition required value: 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%.
Q450NQR1 steel ambient temperature mechanical properties: R m:>=530MPa, R el:>=450MPa;-40 DEG C of average KV 2:>=60J.
In welding rod DC reverse connection when welding of comparative example 1-3, although difference slightly in processing performance, overall operation is functional, and fusion penetration is moderate, splashes little, be shaped attractive in appearance, and wherein welding rod composite technology performance the best of example 2, weld deposit coefficient is about 110%.
Detect the deposited metal composition of gained welding rod, the welded welding requirements that mechanical performance can meet 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 described 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; that in above-described embodiment and description, describes 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.The claimed scope of the present invention is defined by appending claims and equivalent thereof.

Claims (8)

1. the core wire that up to 55kg weathering steel welding rod uses, this core wire is selected H08E dish unit, and the mass percent of the contained element of core wire 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.
2. the coating that up to 55kg weathering steel welding rod uses, is characterized in that, described coating is mixed by solid constituent and liquid components, and the quality that adds of described liquid components is the 22-24% of 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.
3. the coating that a kind of up to 55kg weathering steel welding rod according to claim 1 uses, is characterized in that, described waterglass is formulated according to mass ratio 1:1 by pure sodium silicate and pure KP1.
4. the coating that a kind of up to 55kg weathering steel welding rod according to claim 1 uses, is characterized in that, described solid constituent, according to mass parts meter, comprises following component:
30 parts, marble, 24 parts, fluorite, 4 parts of natural rutiles, 2 parts of potassic feldspars, 3 parts of ferrotianiums, 4 parts of mid-carbon fe-mns, 3 parts of ferrosilicon, 1.8 parts of carbon ferrochromes, 1.2 parts of nickel powders, 1.2 parts of copper powders, 0.8 part of sodium alginate, 2 parts of iron powders.
5. the coating that a kind of up to 55kg weathering steel welding rod according to claim 1 uses, is characterized in that, the mass ratio of described marble and fluorite is 1-1.5.
6. a preparation method for the coating that a kind of up to 55kg weathering steel welding rod described in claim 2 to 5 any one claim uses, is characterized in that, comprises the following steps:
Each solid constituent raw material first after 40 object sieve, is made to solid constituent after then mixing in proportion, add waterglass according to 22～24% of solid constituent quality, then after stirring, make coating.
7. a up to 55kg weathering steel welding rod, is made up of the coating on core wire and coating core wire, it is characterized in that:
Described core wire is selected H08E dish unit, and the mass percent of the contained element of core wire 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, and the quality that adds of described liquid components is the 22-24% of 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.
8. a preparation method for a kind of up to 55kg weathering steel welding rod claimed in claim 7, is characterized in that, comprises the following steps:
By each solid constituent raw material first after 40 object sieve, then after mixing in proportion, make solid constituent, add waterglass according to 22～24% of solid constituent quality, then after stirring, by conventional welding rod production equipment, its extrusion is prepared to welding rod on core wire.
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CN107598414A (en) * 2017-10-26 2018-01-19 天津市金桥焊材集团有限公司 A kind of marine atmosphere corrosion-resisting steel welding rod
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
CN110802342A (en) * 2019-12-03 2020-02-18 四川西冶新材料股份有限公司 High-strength weathering steel Q550NQR1 and Q550qNH matched welding rod
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
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
CN112643250A (en) * 2020-12-09 2021-04-13 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
CN113894464A (en) * 2021-10-15 2022-01-07 江苏太平洋联合焊接材料有限公司 Preparation method of welding electrode for hot-strength steel and quality inspection tool
CN113927205A (en) * 2021-11-20 2022-01-14 大连金科精密合金材料制造有限公司 High-speed tool steel welding rod and preparation method thereof
CN114434043A (en) * 2022-01-24 2022-05-06 昆山京群焊材科技有限公司 Welding rod for sulfuric acid reducing bacteria corrosion resistant steel
CN115194362A (en) * 2021-04-12 2022-10-18 天津市金桥焊材集团股份有限公司 Low-smoke 55-kilogram-level weather-resistant flux-cored wire

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CN105458553A (en) * 2015-12-10 2016-04-06 无锡普瑞明思机械制造有限公司 Memory type welding electrode
CN107598414A (en) * 2017-10-26 2018-01-19 天津市金桥焊材集团有限公司 A kind of marine atmosphere corrosion-resisting steel welding rod
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
CN110802342A (en) * 2019-12-03 2020-02-18 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
CN112643250A (en) * 2020-12-09 2021-04-13 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
CN115194362A (en) * 2021-04-12 2022-10-18 天津市金桥焊材集团股份有限公司 Low-smoke 55-kilogram-level weather-resistant flux-cored wire
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
CN113894464A (en) * 2021-10-15 2022-01-07 江苏太平洋联合焊接材料有限公司 Preparation method of welding electrode for hot-strength steel and quality inspection tool
CN113927205A (en) * 2021-11-20 2022-01-14 大连金科精密合金材料制造有限公司 High-speed tool steel welding rod and preparation method thereof
CN113927205B (en) * 2021-11-20 2023-05-02 大连金科精密合金材料制造有限公司 High-speed tool steel welding rod and preparation method thereof
CN114434043A (en) * 2022-01-24 2022-05-06 昆山京群焊材科技有限公司 Welding rod for sulfuric acid reducing bacteria corrosion resistant steel
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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