CN105880870A - High-toughness heat-resisting steel welding rod - Google Patents

High-toughness heat-resisting steel welding rod Download PDF

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Publication number
CN105880870A
CN105880870A CN201610345929.7A CN201610345929A CN105880870A CN 105880870 A CN105880870 A CN 105880870A CN 201610345929 A CN201610345929 A CN 201610345929A CN 105880870 A CN105880870 A CN 105880870A
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dry powder
resistant steel
steel electrode
coating
ferro
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CN105880870B (en
Inventor
宋昌宝
王哲
杨恒闯
王玲艳
周海龙
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Wuhan Tiemiao Welding Materials Co Ltd
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Wuhan Tiemiao Welding Materials 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
    • B23K35/24—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
    • 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

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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 provides a high-toughness heat-resisting steel welding rod. The high-toughness heat-resisting steel welding rod comprises a welding core and a coating which coats on the surface of the welding core, wherein the coating is formed by mixing dry powder and a binder; based on the total weight of the dry powder, the coating comprises the following dry powder components in percentage by weight: 40-48% of marbles, 17-25% of fluorite, 3-6% of quartz, 2-5% of natural rutile, 0.3-1.0% of aluminum oxide, 3.5-5% of chromium metal, 2.5-3.0% of ferro-molybdenum, 5-8% of 45# atomized ferrosilicon, 2.0-3.5% of electrolytic manganese, 0.5-1.0% of magnesium-aluminum alloy, 0.6-1.3% of ferro-aluminum, 0.5-1.5% of sodium carbonate, 0.1-0.3% of graphite and 2-10% of iron powder; and the adding amount of the binder is 18-25% the total weight of the dry powder. The high-toughness heat-resisting steel welding rod adopts a CaO-CaF2-SiO2-Al2O3 novel slag system, and replaces quartz with little rutile, so that short slag is formed, process properties of the welding rod are improved, the electric arc is stable, splashing is small, slag removal is excellent, and full-position welding can be carried out; and the welding rod provided by the invention has good low-temperature impact toughness (the impact value at a temperature being (-)30 DEG C being greater than or equal to 180 J), and has a stable low-temperature impact value.

Description

A kind of high-tenacity heat-resistant steel electrode
Technical field
The invention belongs to welding material manufacturing technology field, be specifically related to a kind of high-tenacity heat-resistant steel electrode, It is suitable for 1～1.25%Cr-0.5%Mo Mayari to use.
Background technology
1～1.25%Cr-0.5%Mo Mayari is in station boiler, pressure vessel, petrochemical industry etc. Field has wide application market, along with above-mentioned industry device develops to maximization, high parameter direction, Heat-resisting steel material and supporting heat resisting steel wlding thereof be it is also proposed higher requirement, except to room temperature and Outside mechanical behavior under high temperature is distinctly claimed, increasingly pay attention to cryogenic mechanics performance, particularly low-temperature impact Toughness, to meet the installation under adverse circumstances and to use requirement.Heat resistant steel electrode ripe on market is general All over there is the problem that low-temperature impact toughness is low or low-temperature impact work fluctuation is serious, pressure-bearing cannot be met Equipment increasingly strict requirements.
At present, the patent of pertinence heat resistant steel electrode is as follows:
(1) ultralow-hydrogen low high tenacity low-carbon (LC) adds tungsten heat resistant steel electrode (CN103240542A), disclosed in this patent Welding rod is applicable to the welding of 12Cr1MoV steel, and its performance meets heat resisting steel high temperature endurance performance and room temperature punching Hit the requirement of toughness, but be not directed to low-temperature impact toughness.
(2) a kind of supercritical Novel iron ferritic heat resistant steel electrode (CN103008917A), this patent relates to Welding rod be applicable to the welding of T/P92 heat resisting steel, Resistance of Weld Metal room temperature impact merit is tested, But it is not directed to low-temperature impact toughness.
(3) a kind of heat resistant steel electrode being resistant to annealing normalized treatment and using method (CN101342650A), Welding rod disclosed in this patent is applicable to the welding of the heat-resisting steel materials such as 15CrMo and 14Cr1Mo, and this is special Profit pertains only to the intensity index of weld metal, and On Impact Toughness is not studied.
(4) a kind of low-intensity high-tenacity heat-resistant steel electrode (CN103878506A), the weldering that this patent relates to Although bar weld metal reaches 200J at-20 DEG C of low-temperature impact works, but containing about 2% titanium in electrode coating Ferrum, this, by Ti element a small amount of for transition in weld metal, exacerbates the instability of low-temperature impact toughness Property, cause the fluctuation of weld metal low-temperature impact toughness serious；Additionally, containing 1～3% in this electrode coating Rare earth ferrosilicon, seriously adds the production cost of welding rod.The most important thing is, this welding rod is strong by reducing Degree improves weld metal plasticity and toughness, it is impossible to meets in national standard and is more than about tensile strength 550MPa has good low-temperature flexibility while specifying.
(5) a kind of supercritical heat resistant steel electrode and production method (CN103737199A) thereof, this patent is public The heat resistant steel electrode opened relates to room temperature impact toughness, and under the conditions of 20 DEG C, weld metal ballistic work is put down Average is about 50J, but is not directed to low-temperature impact work.
(6) a kind of low hydrogen type supercritical jessop welding rod (CN104117788A), in this patent The heat resistant steel electrode related to improves the room temperature impact toughness of heat resistant steel electrode by adding rare earth element, but It is not directed to low-temperature impact toughness.
(7) a kind of high-ductility alloy series heat-resistant steel welding rod (CN104014949A), the weldering that this patent relates to Bar improves the room temperature impact toughness of heat resistant steel electrode by optimizing the method such as slag system and interpolation rare earth, but It is not directed to low-temperature impact toughness.
(8) a kind of heat resistant steel electrode (CN103264234A) with low-temperature impact toughness, this patent relates to And heat resistant steel electrode be applicable to the welding of 2.25Cr-1Mo heat resisting steel, welding rod is by selecting low-sulfur, phosphorus Deng the core wire of impurity content and carry out strong deoxidation with ferrotianium, so that weld metal is the low temperature punching of-30 DEG C Hit merit more than 130J, but the interpolation of ferrotianium increase weld metal is formed thick pro-eutectoid ferrite or The probability of ferrite net, deteriorates heat resistant steel electrode removability of slag energy, and aggravation weld metal low-temperature impact is tough Property fluctuation, cause its cryogenic mechanics performance unstable.
Summary of the invention
It is an object of the invention to overcome that existing heat resistant steel electrode low-temperature impact work is on the low side and impact value is unstable Fixed problem.
To this end, the invention provides a kind of high-tenacity heat-resistant steel electrode, including core wire with wrap at core wire The coating on surface, described coating is mixed by dry powder and bonding agent, the composition of dry powder in described coating And content to account for the percentage ratio of dry powder gross weight as follows: marble: 40～48%, fluorite: 17～25%, Quartz: 3～6%, natural rutile: 2～5%, aluminium sesquioxide: 0.3～1.0%, crome metal: 3.5～ 5%, molybdenum-iron: 2.5～3.0%, 45# is atomized ferrosilicon: 5～8%, electrolytic manganese: 2.0～3.5%, magnalium Alloy: 0.5～1.0%, ferro-aluminum: 0.6～1.3%, soda: 0.5～1.5%, graphite: 0.1～0.3%, Iron powder: 2～10%；Described bonding agent is in terms of 100% by dry powder gross weight, and its addition is dry powder gross weight 18～25%.
Further, above-mentioned coating quality accounts for the 28%～30% of welding rod gross mass.
Further, above-mentioned bonding agent is the pure sodium silicate of high mould, the modulus of this pure sodium silicate of high mould It is 3.0～3.2.
Further, above-mentioned core wire is low carbon steel welding core H08E, contained element and each element in this core wire Mass percent in core wire is: C≤0.10%, Mn:0.35～0.60%, Si≤0.03%, Cr ≤ 0.20%, Ni≤0.30%, Cu≤0.20%, S≤0.020%, P≤0.020%, surplus is Fe.
Further, in above-mentioned magnalium, the mass fraction of Mg and Al respectively accounts for 50%, Al in ferro-aluminum Mass percent be 50%.
Further, in above-mentioned ferro-aluminum and magnalium, the gross mass of Al accounts for coating dry powder gross mass 0.7～0.9%.
A kind of embodiment, in above-mentioned coating, composition and the content of dry powder account for dry powder gross weight Percentage ratio is as follows: marble: 40%, fluorite: 21%, quartz: 3%, natural rutile: 5%, and three Al 2 O: 1.0%, crome metal: 3.5%, molybdenum-iron: 2.5%, 45# are atomized ferrosilicon: 8%, electrolytic manganese: 3.5%, magnalium: 0.7%, ferro-aluminum: 0.7%, soda: 0.8%, graphite: 0.3%, iron powder: 10%.
A kind of embodiment, in above-mentioned coating, composition and the content of dry powder account for dry powder gross weight Percentage ratio is as follows: marble: 45%, fluorite: 17%, quartz: 5%, natural rutile: 4%, and three Al 2 O: 0.8%, crome metal: 5%, molybdenum-iron: 2.8%, 45# are atomized ferrosilicon: 6%, electrolytic manganese: 3.2%, magnalium: 1.0%, ferro-aluminum: 0.6%, soda: 1.5%, graphite: 0.1%, iron powder: 8%.
A kind of embodiment, in above-mentioned coating, composition and the content of dry powder account for dry powder gross weight Percentage ratio is as follows: marble: 48%, fluorite: 25%, quartz: 6%, natural rutile: 2%, and three Al 2 O: 0.3%, crome metal: 4.2%, molybdenum-iron: 3.0%, 45# are atomized ferrosilicon: 5%, electrolytic manganese: 2.0%, magnalium: 0.5%, ferro-aluminum: 1.3%, soda: 0.5%, graphite: 0.2%, iron powder: 2%.
The design principle of high-tenacity heat-resistant steel electrode Chinese medicine skin formula of the present invention is as follows:
Marmorean Main Function is slag making, gas making, desulfurization, dephosphorization, improves slag basicity, increases Slag surface tension force and viscosity, the fusing point of regulation slag；When marble addition is less than 40%, formed Slag cover complete, slag fusing point is relatively low, and welding rod easily glues test plate (panel) and short circuit current interruption；Its addition During more than 48%, coating fusing point is high, and the coating sleeve of formation is the deepest, easy blow-out, the increase of molten iron viscosity and Shape and be deteriorated.
Fluorite primarily serve the purpose of slag making, shoddye and dehydrogenation effect, the fusing point of scalable slag and viscosity Deng physicochemical property, activation is played in molten bath；When the addition of fluorite is less than 17%, molten iron viscosity Greatly, easy slag inclusion, the diffusible hydrogen content of deposited metal is the most higher；When its addition is more than 25%, slag Trickling is serious, the unstable and easy current interruption of arc electrode.
Quartz, as slag former, can improve arc voltage, refines molten drop；When quartz addition is less than 3% Time, slag fluidity is deteriorated and covers incomplete, and appearance of weld is deteriorated, de-slag difficulty；Its addition is big In 6% time, slag is glass shelly, de-slag difficulty.
Rutile primarily serve the purpose of slag making, stabilising arc, the physical property of regulation slag, improve weld seam become Shape；When rutile addition is less than 2%, it is difficult to realize all-position welding；When its addition is more than 5%, Easily form acidic oxide and be mingled with and cause weld seam oxygen supplement, deteriorate mechanical property.
Aluminium sesquioxide is as slag former, scalable slag fusing point and viscosity；Aluminium sesquioxide addition DeGrain during less than 0.3%, dramatically increases coating fusing point when its addition is more than 1.0%, and electric arc is steady Qualitative variation, splashes and increases.
Crome metal and molybdenum-iron are as alloying constituent, to alloying elements cr, the Mo of weld metal transition necessity.
45# atomization ferrosilicon, as deoxidizer and alloying constituent, can accelerate welding rod burn-off rate, improves slag profit Wet spreading ability；When 45# ferrosilicon addition is less than 5%, deoxidation is not enough, and weld properties is low, and weld seam is convex Degree is relatively big, shapes and is deteriorated；When its addition is more than 8%, the silicon addition content in weld seam is higher, Weld metal intensity is caused to raise and the decline of plasticity, toughness.
Electrolytic manganese, as deoxidizer and alloying constituent, can play the effect of desulfurization simultaneously；Coating adds electricity When Xie Meng is less than 2.0%, the Mn content in weld metal is on the low side, forms thick pro-eutectoid ferrite, Poor mechanical property；When its addition is more than 3.5%, weld fumes increases, the content of Mn element in weld seam Higher, although weld metal intensity can be made to increase, but its plasticity then decreases with toughness.
Magnalium and ferro-aluminum, as strong deoxidizer, are used for purifying weld metal, reduce weld metal and contain Oxygen amount, acts on to weld metal transition minor-alloying element Al with aluminium sesquioxide, with Al simultaneously jointly2O3 Form as forming core particle crystal grain thinning.
Soda is used for stabilising arc, improves welding rod extrusion performance；Work when soda addition is less than 0.5% in coating With inconspicuous, when its addition is more than 1.5%, weld fumes increases.
Graphite is used for stabilising arc, can improve coating electric conductivity, increases blow force of arc；Graphite addition is little Without positive effect in 0.1% time, when its addition is more than 0.3%, weld metal carburetting is serious, causes mechanics Performance reduces.
Beneficial effects of the present invention:
(1) this high-tenacity heat-resistant steel electrode that the present invention provides uses CaO-CaF2-SiO2-Al2O3Novel Slag system, and replace quartz with a small amount of rutile, thus form short slag, improve usability of electrode energy, Arc stability, little, the de-slag that splashes are excellent, can carry out all-position welding.
(2) this high-tenacity heat-resistant steel electrode that the present invention provides uses the H08E that sulfur, phosphorus content are relatively low Core wire, with coating mode transition alloy elements in weld seam, it is tough that this welding rod has good low-temperature impact Property, the low-temperature impact value stabilization under the conditions of-30 DEG C is at more than 180J.
(3) this high-tenacity heat-resistant steel electrode that the present invention provides is for 1～1.25%Cr-0.5%Mo low conjunction The all-position welding of gold heat resisting steel, solves existing heat resistant steel electrode processing performance and mechanical property, height Temperature and room-temperature mechanical property can not be taken into account with cryogenic mechanics performance, and particularly low-temperature impact work is on the low side and rushes Hit the problem that value is unstable.
(4) this high-tenacity heat-resistant steel electrode that the present invention provides adds Al in coating simultaneously2O3、Mg And Al, Mg and Al mono-aspect of interpolation plays the effect of strong deoxidation and purifies weld metal, on the other hand The Al of transition trace in weld metal, and with Al2O3Form play the effect of forming core particle thus thin Change crystal grain, make welding rod have the mechanical property of excellence, the most excellent and stable low-temperature impact toughness.
Accompanying drawing explanation
Fig. 1 be embodiment 1 high-tenacity heat-resistant steel electrode low-temperature impact test after fracture surface of sample 5mm divide Resolution scanning electron microscope diagram.
Fig. 2 be embodiment 1 high-tenacity heat-resistant steel electrode low-temperature impact test after fracture surface of sample 20 μm Resolution scanning electron micro mirror figure.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is entered Row clearly and completely describes, it is clear that described embodiment is only a part of embodiment of the present invention, Rather than whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art are not having Have and make all other embodiments obtained under creative work premise, broadly fall into present invention protection Scope.
In embodiment, high-toughness thermo-resisting steel electrode coating dry powder formulation and percentage by weight thereof are as shown in table 1, The bonding agent added is as shown in table 2.Wherein, core wire uses wlding row with the percentage by weight of coating The ratio that industry is general, core wire accounts for the 70～72% of welding rod gross weight, coating account for welding rod gross weight 28～ 30%, the present embodiment is selected core wire account for the 70% of welding rod gross weight, coating accounts for the 30% of welding rod gross weight. Preferably, described bonding agent is the pure sodium silicate of high mould, the modulus of this pure sodium silicate of high mould be 3.0～ 3.2, this pure sodium silicate viscosity is high, can reduce the mixing time of coating dry powder, coating after welding rod extrusion Low temperature intensity is high, is unlikely to deform, and can reduce electrode coating and break head and welding rod is bonding, improve welding rod finished product Rate；In described magnalium, the mass fraction of Mg and Al respectively accounts for 50%, the percent mass of Al in ferro-aluminum Ratio about 50%；And in ferro-aluminum and magnalium the gross mass of Al account for coating dry powder gross mass 0.7～ 0.9%；Ferro-aluminum and magnalium are in addition to playing strengthening deoxidizing purification weld metal, Mg with Al makees jointly With promoting that a small amount of Al element transition enters weld metal and plays the effect of crystal grain thinning.
Table 1: coating dry powder embodiment composition proportion (wt.%)
Dry powder forms Embodiment 1 Embodiment 2 Embodiment 3
Marble 40 45 48
Fluorite 21 17 25
Quartz 3 5 6
Natural rutile 5 4 2
Aluminium sesquioxide 1.0 0.8 0.3
Crome metal 3.5 5 4.2
Molybdenum-iron 2.5 2.8 3.0
45# is atomized ferrosilicon 8 6 5
Electrolytic manganese 3.5 3.2 2.0
Magnalium 0.7 1.0 0.5
Ferro-aluminum 0.7 0.6 1.3
Soda 0.8 1.5 0.5
Graphite 0.3 0.1 0.2
Iron powder 10 8 2
Table 2: bonding agent embodiment adding proportion (wt.%)
Bonding agent Embodiment 1 Embodiment 2 Embodiment 3
The pure sodium silicate of high mould 18 22 25
Heat resisting steel test plate (panel) is welded, so by the high-tenacity heat-resistant steel electrode using above-described embodiment 1～3 preparation After according to national Specification, test plate (panel) carried out 690 DEG C/1h annealing, to weld metal after heat treatment Chemical composition test with mechanical property, result is as shown in Table 3 and Table 4.
Table 3: embodiment deposited metal composition (wt.%)
Table 4: embodiment deposited metal mechanical property
According to the deposited metal composition test result shown in table 3, the high-toughness thermo-resisting steel of the present invention Welding rod deposited metal composition complies fully with the regulation of concerned countries standard.
According to the deposited metal mechanical experimental results shown in table 4, the high-toughness thermo-resisting steel of the present invention The mechanical properties such as welding rod deposited metal tensile strength, yield strength and elongation percentage comply fully with concerned countries The regulation of standard, deposited metal low-temperature impact toughness is excellent, and cold impact value fluctuation is little ,-30 DEG C of conditions Under low-temperature impact value stabilization at more than 180J.
The high-tenacity heat-resistant steel electrode of embodiment 1～3 is carried out low-temperature impact test.Test result shows, After shock-testing, the impact specimen of embodiment 1～3 is fractured into two parts the most completely, and sample root position is still So link together, show that the weld metal material using high-tenacity heat-resistant steel electrode of the present invention has excellent Different low-temperature impact toughness.
It is 5mm and 20 to the impact specimen fracture after low-temperature impact test in embodiment 1 by resolution The electronic scanner microscope of μm is observed, and its result is as depicted in figs. 1 and 2.By Fig. 1 and Fig. 2 It can be seen that impact specimen fracture surface exists substantial amounts of dimple, dimple is the most intensive and the degree of depth is relatively big, Show that this impact specimen creates substantial amounts of plastic deformation during impact test, absorb a large amount of punching Hit merit, i.e. this high-tenacity heat-resistant steel electrode deposited metal has excellent plasticity under cryogenic with tough Property.
High-tenacity heat-resistant steel electrode metal chemical composition and mechanical property that the present invention provides all meet E55156-1CM, NB/T 47018.2-2001 " pressure-bearing in GB/T 5118-2012 " refractory steel welding rod " Equipment welding material is ordered goods technical conditions " Part II: the regulation of E5515-B2 in steel electrode.
In sum, this high-tenacity heat-resistant steel electrode that the present invention provides uses CaO-CaF2-SiO2-Al2O3Novel slag system, and replace quartz with a small amount of rutile, thus form short slag, Improving usability of electrode energy, arc stability, little, the de-slag that splashes are excellent, can carry out all position welding Connect；And the welding rod that provides of the present invention have good low-temperature impact toughness (-30 DEG C of impact values >= 180J), and its low-temperature impact value stabilization.
Exemplified as above is only the illustration to the present invention, is not intended that protection scope of the present invention Restriction, every belong to protection scope of the present invention with the same or analogous design of the present invention within.

Claims (9)

1. a high-tenacity heat-resistant steel electrode, including core wire and wrap the coating on core wire surface, it is special Levy and be: described coating is mixed by dry powder and bonding agent, the composition of dry powder and containing in described coating The percentage ratio that amount accounts for dry powder gross weight is as follows: marble: 40～48%, fluorite: 17～25%, quartz: 3～6%, natural rutile: 2～5%, aluminium sesquioxide: 0.3～1.0%, crome metal: 3.5～5%, Molybdenum-iron: 2.5～3.0%, 45# is atomized ferrosilicon: 5～8%, electrolytic manganese: 2.0～3.5%, magnalium: 0.5～1.0%, ferro-aluminum: 0.6～1.3%, soda: 0.5～1.5%, graphite: 0.1～0.3%, ferrum Powder: 2～10%；Described bonding agent is in terms of 100% by dry powder gross weight, and its addition is dry powder gross weight 18～25%.
2. high-tenacity heat-resistant steel electrode as claimed in claim 1, it is characterised in that: described coating matter Amount accounts for the 28%～30% of welding rod gross mass.
3. high-tenacity heat-resistant steel electrode as claimed in claim 1, it is characterised in that: described bonding agent For the pure sodium silicate of high mould, the modulus of this pure sodium silicate of high mould is 3.0～3.2.
4. high-tenacity heat-resistant steel electrode as claimed in claim 1 or 2, it is characterised in that: described Core wire is low carbon steel welding core H08E, contained element and each element percent mass in core wire in this core wire Ratio is: C≤0.10%, Mn:0.35～0.60%, Si≤0.03%, Cr≤0.20%, Ni≤0.30%, Cu≤0.20%, S≤0.020%, P≤0.020%, surplus is Fe.
5. high-tenacity heat-resistant steel electrode as claimed in claim 1, it is characterised in that: described magnalium closes In gold, the mass fraction of Mg and Al respectively accounts for 50%, and in ferro-aluminum, the mass percent of Al is 50%.
6. high-tenacity heat-resistant steel electrode as claimed in claim 5, it is characterised in that: described ferro-aluminum and In magnalium, the gross mass of Al accounts for the 0.7～0.9% of coating dry powder gross mass.
7. high-tenacity heat-resistant steel electrode as claimed in claim 1, it is characterised in that: in described coating The percentage ratio that the composition of dry powder and content account for dry powder gross weight is as follows: marble: 40%, fluorite: 21%, Quartz: 3%, natural rutile: 5%, aluminium sesquioxide: 1.0%, crome metal: 3.5%, molybdenum-iron: 2.5%, 45# are atomized ferrosilicon: 8%, electrolytic manganese: 3.5%, magnalium: 0.7%, ferro-aluminum: 0.7%, Soda: 0.8%, graphite: 0.3%, iron powder: 10%.
8. high-tenacity heat-resistant steel electrode as claimed in claim 1, it is characterised in that: in described coating The percentage ratio that the composition of dry powder and content account for dry powder gross weight is as follows: marble: 45%, fluorite: 17%, Quartz: 5%, natural rutile: 4%, aluminium sesquioxide: 0.8%, crome metal: 5%, molybdenum-iron: 2.8%, 45# is atomized ferrosilicon: 6%, electrolytic manganese: 3.2%, magnalium: 1.0%, ferro-aluminum: 0.6%, soda: 1.5%, graphite: 0.1%, iron powder: 8%.
9. high-tenacity heat-resistant steel electrode as claimed in claim 1, it is characterised in that: in described coating The percentage ratio that the composition of dry powder and content account for dry powder gross weight is as follows: marble: 48%, fluorite: 25%, Quartz: 6%, natural rutile: 2%, aluminium sesquioxide: 0.3%, crome metal: 4.2%, molybdenum-iron: 3.0%, 45# are atomized ferrosilicon: 5%, electrolytic manganese: 2.0%, magnalium: 0.5%, ferro-aluminum: 1.3%, Soda: 0.5%, graphite: 0.2%, iron powder: 2%.
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CN106181125A (en) * 2016-08-30 2016-12-07 四川大西洋焊接材料股份有限公司 Exempt from application bridge steel high-performance weather-proof steel welding rod and preparation method thereof
CN106271224A (en) * 2016-08-30 2017-01-04 四川大西洋焊接材料股份有限公司 Water power 790MPa grade high strength and high toughness welding rod and preparation method thereof
CN106346167A (en) * 2016-09-14 2017-01-25 钢铁研究总院 Welding rod for welding of martensite heat-resistant steel
CN106392382A (en) * 2016-12-06 2017-02-15 攀枝花学院 J507 welding rod with high deposition rate, and preparation method thereof
CN106425171A (en) * 2016-12-06 2017-02-22 攀枝花学院 Low-hydrogen iron powder electrode and preparing method
CN114310030A (en) * 2021-11-25 2022-04-12 武汉铁锚焊接材料股份有限公司 Heat-treatable anti-cracking high-toughness welding rod
CN115625450A (en) * 2022-10-28 2023-01-20 山东大学 High-manganese type austenite welding rod for welding Fe-Mn-Al series low-temperature steel and preparation thereof

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CN104907738A (en) * 2015-05-25 2015-09-16 武汉铁锚焊接材料股份有限公司 Special welding rod for sulfuric acid dew point corrosion-resistant steel
CN105033503A (en) * 2015-08-17 2015-11-11 武汉铁锚焊接材料股份有限公司 Welding rod for welding corrosion-resisting steel
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GB1030326A (en) * 1963-09-17 1966-05-18 Murex Welding Processes Ltd Improvements in arc welding electrodes
JPS60216995A (en) * 1984-04-13 1985-10-30 Nippon Steel Corp Low hydrogen covered electrode
CN1262160A (en) * 1999-02-04 2000-08-09 魏国章 Electric welding electrode of refractory pearlitic steel
CN101898284A (en) * 2010-07-14 2010-12-01 中国船舶重工集团公司第七二五研究所 Surfacing electrode for repairing hot forged mould
CN103008922A (en) * 2012-12-17 2013-04-03 四川大西洋焊接材料股份有限公司 Low-yield strength hydrogen-induced cracking-resistant steel-dedicated welding rod and production method thereof
CN103447717A (en) * 2013-07-30 2013-12-18 中国船舶重工集团公司第七二五研究所 Low-alloy steel covered electrode for low-temperature steel welding
CN103862201A (en) * 2014-03-04 2014-06-18 中国船舶重工集团公司第七二五研究所 Welding electrode for Ni steel welding
CN104907738A (en) * 2015-05-25 2015-09-16 武汉铁锚焊接材料股份有限公司 Special welding rod for sulfuric acid dew point corrosion-resistant steel
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Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106181125A (en) * 2016-08-30 2016-12-07 四川大西洋焊接材料股份有限公司 Exempt from application bridge steel high-performance weather-proof steel welding rod and preparation method thereof
CN106271224A (en) * 2016-08-30 2017-01-04 四川大西洋焊接材料股份有限公司 Water power 790MPa grade high strength and high toughness welding rod and preparation method thereof
CN106181125B (en) * 2016-08-30 2018-06-19 四川大西洋焊接材料股份有限公司 Exempt from application bridge steel high-performance weather-proof steel welding rod and preparation method thereof
CN106346167A (en) * 2016-09-14 2017-01-25 钢铁研究总院 Welding rod for welding of martensite heat-resistant steel
CN106346167B (en) * 2016-09-14 2018-05-01 钢铁研究总院 A kind of martensite heat-resistant steel welding welding rod
CN106392382A (en) * 2016-12-06 2017-02-15 攀枝花学院 J507 welding rod with high deposition rate, and preparation method thereof
CN106425171A (en) * 2016-12-06 2017-02-22 攀枝花学院 Low-hydrogen iron powder electrode and preparing method
CN106425171B (en) * 2016-12-06 2019-02-22 攀枝花学院 Low hydrogen type iron powder electrode and preparation method thereof
CN114310030A (en) * 2021-11-25 2022-04-12 武汉铁锚焊接材料股份有限公司 Heat-treatable anti-cracking high-toughness welding rod
CN114310030B (en) * 2021-11-25 2023-08-08 武汉铁锚焊接材料股份有限公司 Heat-treatable anti-cracking high-toughness welding rod
CN115625450A (en) * 2022-10-28 2023-01-20 山东大学 High-manganese type austenite welding rod for welding Fe-Mn-Al series low-temperature steel and preparation thereof

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