CN110000490A - A kind of T/P92 heat resistant steel electrode and preparation method thereof - Google Patents
A kind of T/P92 heat resistant steel electrode and preparation method thereof Download PDFInfo
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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
- B23K35/308—Fe as the principal constituent with Cr 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
-
- 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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- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Nonmetallic Welding Materials (AREA)
Abstract
The present invention relates to a kind of T/P92 heat resistant steel electrode and preparation method thereof, the core wire uses core wire transient mode, and in the range of the control of core wire chemical element component is deposited metal composition standard, the coating is using the higher low hydrogen type design of basicity.Compared with prior art, arc stability in welding process of the present invention, substantially without splash, the removability of slag is good, molten bath is clear, appearance of weld is beautiful, and welding rod operating characteristics is good；With performances such as excellent deposited metal intensity, impact flexibility.
Description
Technical field
The present invention relates to a kind of welding materials, more particularly, to a kind of T/P92 heat resistant steel electrode and preparation method thereof.
Background technique
For the discharge amount for reducing harmful, greenhouse gases, the trend of thermal power generating technology development is coal-fired using ultra supercritical
Generation technology promotes the thermal efficiency of fired power generating unit to improve steam parameter.The steam parameter of ultra supercritical power generation technology in China harshness needs
Wanting ferritic heat-resistant steel has good mechanical property and an antioxygenic property, therefore development of new high chrome becomes to develop and super faces
The key link of boundary's unit.T/P92 steel is that 1.8% tungsten (W) element is added on the basis of T/P91 steel, appropriate to reduce by 0.5% molybdenum
(Mo) martensite heat-resistant steel, extra-supercritical unit high-temperature surface and main steam pipe suitable for vapor (steam) temperature at 580~620 DEG C
The critical components such as road.Compared with T/P91 steel, the creep rupture strength at high temperatures of T/P92 steel improves 25%~30%, at 600 DEG C
100,000 hours creep rupture strengths reach 130MPa under high temperature；Compared with austenite high-temperature refractory steel, T/P92 steel has welding performance
Good, thermal expansion coefficient is small, the good and cheap advantage of anti-fatigue performance.
With the continuous construction of supercritical thermal power unit, T/P92 steel pipe will be largely widely applied, and base material is micro- at present
Tissue, mechanical property and high-temerature creep enduring quality etc. can stablize satisfaction and use design requirement.To guarantee that pipeline is manual
The stability of the chemical component and mechanical property of weld metal when electric arc welding, therefore urgently develop a kind of full core wire transition
The welding rod of type.
Chinese patent CN200810151248.2 discloses a kind of T/P92 steel electrode, is primarily adapted for use in T/ in power construction
The welding of P92 steel, welding rod core wire material of the present invention use H08MnMoTiB, and coating uses CaO-MgF2-SiO2Slag system.The invention
The mentality of designing of middle welding rod is weld metal alloying element by the way of core wire and the common transition of coating, and W element in weld seam
And enter in weld metal in such a way that the ferrotungsten in coating carries out transition.This welding rod, which has the disadvantage that, works as welding rod
When welding is in overhead position or vertical position of welding, covering transition mode easily causes the uneven of weld metal element, leads to performance
Instability.
Summary of the invention
It is an object of the present invention to overcome the above-mentioned drawbacks of the prior art and provide a kind of T/P92 heat resisting steel to weld
Item and preparation method thereof.
The object of the present invention is to provide a kind of ultralow hydrogen type basic slag system of full core wire transition, for T/P92 steel weld
Heat resistant steel electrode, make the welding rod in the welding process and have that arc stability is good, splashing is small, the removability of slag is good, appearance of weld is beautiful
Ideal welding technological properties, and guarantee that welding rod deposited metal diffusible hydrogen content meets the requirement of ultralow hydrogen type electrode.
The purpose of the present invention can be achieved through the following technical solutions:
A kind of T/P92 heat resistant steel electrode, is made of core wire and coating, and the core wire includes that following component and quality percentage contain
Amount:
Remaining is Fe.
Further, the coating includes following components and mass parts content:
Preferably, the coating includes following components and mass parts content:
Preferably, the granularity of the coating is less than 40 mesh.
A kind of preparation method of T/P92 heat resistant steel electrode, includes the following steps:
(1) coating component is uniformly mixed；
(2) pure sodium silicate is added in coating, extrusion is on core wire after mixing evenly；
(3) it is put into progress welding rod preparation in welding rod production equipment.
Preferably, the amount that pure sodium silicate is added is the 19-23% of coating component quality.
Core wire design considerations of the invention is as follows:
All chemical elements of welding rod deposited metal are during Welding Metallurgy, by core wire and coating two parts to molten
Metallisation carries out transition, to avoid the shakiness divided caused by because of the ingredient fluctuation and coating fusing unevenly of iron alloy powder in coating
Determine transition, therefore use core wire transient mode as far as possible, thus by the control of core wire chemical element component with deposited metal composition
In a certain range of standard.
Core wire design considerations of the invention is as follows:
Maxima solubility of the ingredient C:C in γ-Fe is 1.7%, is 0.035% in α-Fe.Belong to and expands the area γ member
Element plays solution strengthening.Excessive C will exist in weld metal in the form of carbide, forms precipitation strength, is mentioning
While high weld strength, hardness, the crack sensitivity of weld metal is also increased.So must use low-carbon microalloyed
Mechanism, in this way, not only can satisfy the intensity of weld metal but also the crack sensitivity of weld metal can be reduced；Combine weld seam
The range of metal C element content plans C content control 0.08~0.13%.
Maxima solubility of the ingredient Mn:Mn in γ-Fe is 100%, is 3% in α-Fe, belongs to and expand γ p-block element p.
Mn exists generally in the form of solution strengthening when content is lower in martensite heat-resistant steel weld metal.Improving, martensite is strong
Toughness can also be improved while spending.Consider to still need to add a certain amount of manganese metal as deoxidier in coating, therefore by Mn content control
System is in 0.2~0.4% range.
Maxima solubility of the ingredient Si:Si in γ-Fe is 2%, is 18.5% in α-Fe, belongs to and expand α p-block element p.
Si exists generally in the form of solution strengthening, improves the intensity of martensite when content is lower in martensite heat-resistant steel weld seam.It crosses
More Si contents will form intermetallic compound, reduce the impact flexibility of weld metal.Consider to still need to add in coating a certain amount of
Manganese metal as deoxidier, therefore by Mn content control in≤0.1% range.
Maxima solubility of the ingredient Cr:Cr in γ-Fe is 12.8%, is 14.3% in α-Fe, belongs to and expands the area α member
Element.Cr generally plays solution strengthening when content is lower in martensite heat-resistant steel weld seam.Carbonization is formed when together with C
Object, content control the proper impact flexibility that weld metal can be improved.Weld metal not only can be improved in the Cr of certain content simultaneously
Its high temperature oxidation stability of resistance to steam also can be improved in heat resistance.Determine that Cr content is consistent with the control range of weld metal, i.e., 8.5~
In 9.5% range.
Maxima solubility of the ingredient W:W in γ-Fe is 2.6%, is 14.3% in α-Fe, belongs to and expand α p-block element p.
W generally plays solution strengthening, and forming carbide with C element can be improved the high high-temp stability of weld metal.Control W content
It is consistent with the control range of weld metal, i.e. in 1.55~1.95% ranges.
Maxima solubility of the ingredient Nb:Nb in γ-Fe is 2.2%, is 1.8% in α-Fe.Belong to and expands the area α member
Element.Generally play precipitation strength, and strengthening effect is significant.MX phase is formed in conjunction with C, N element, improves the high temperature of weld metal
Creep resistance.It is consistent with the control range of weld metal to control Nb content, i.e. in 0.03~0.06% range.
The effect of ingredient V:V is close with Nb element.It is consistent with the control range of weld metal to control V content, i.e., 0.15~
In 0.25% range.
Maxima solubility of the ingredient Ni:Ni in γ-Fe is 100%, is 10% in α-Fe, belongs to and expands the area γ member
Element.Generally play solution strengthening effect.The toughness of martensitic matrix can be improved in suitable Ni, be conducive to improve weld metal resist it is cold
Fragility can and improve impact flexibility.Ni content is controlled into the range 0.3~0.8% under the premise of meeting weld metal intensity
It is interior.
Maxima solubility of the ingredient Mo:Mo in γ-Fe is 3%, is 37.5% in α-Fe, belongs to and expand α p-block element p,
Generally play precipitation strength.Carbide is formed when coexisting with C, improves the heat resistance of weld metal.Meeting weld metal height
Under the premise of warm intensity by the control of Mo content in the range of 0.35~0.65%.
High temperature creep can be improved in the precipitated phase that ingredient B:B element is formed in conjunction with N element in weld metal.Control B
Content is consistent with the control range of weld metal, i.e. in 0.001~0.005% range.
Ingredient N:N element acts on similar to C in weld metal.It is consistent with the control range of weld metal to control N content,
That is in 0.03~0.06% range.
Ingredient S:S is the objectionable impurities in weld metal, in the form of FeS in the presence of it is the most harmful.Because it and iron are in liquid
When state can infinitely dissolve, and be dissolved in solid iron seldom (solubility is only 0.015~0.02%), therefore solidification when FeS analyse
Out, solidification cracking is formed in crystal boundary with the formal distribution of low melting point eutectic film.The comprehensive performance of weld metal is reduced simultaneously.
So the fewer S content in weld metal the better, therefore by the control of S content in the range of≤0.008%.
Ingredient P:P is objectionable impurities in most weld metal of low-alloy steel.With Fe2P、Fe3The form of P exists, it
Form low melting point eutectic with Fe, Ni and be distributed in crystal boundary, since themselves is hard and crisp, reducing weld metal impact flexibility
Increase weld metal brittle transition temperature also simultaneously.So the fewer P content in weld metal the better, therefore P content is controlled
In the range of≤0.010%.
Coating of the invention is designed using the higher low hydrogen type of basicity, this is because the alloy member of the type coating
Plain transfer coefficient is larger, and molten bath is clear；Weld seam has good intensity, toughness and cracking resistance, and diffusible hydrogen content is low, decontamination
Ability is strong.The main Welding Metallurgy effect of each component is summarized as follows in this electrode coating:
Marble: main slag former and gas-forming agent are affected to welding metallurgical reaction.Decompose the CO generated2Belong to
Oxidizing gas can exclude the air in arc region, and nitrogen is prevented to invade in liquid metal, and reduce the hydrogen in arc atmosphere point
Pressure is conducive to weld metal drop hydrogen.It decomposes the CaO generated and belongs to basic anhydride, the basicity of slag can be improved, enhance slag
De- S, de- P ability.
Fluorite: being mainly used for slag making and improves the physical and chemical performance of slag.It can reduce fusing point, viscosity and the table of basic clinker
Tension increases the mobility of slag, advantageously reduces the gaseous impurity of weld metal, suitable CaF2Slag can be improved to liquid
The protecting effect of body metal, thus can also reduce the hydrogen-sucking amount of liquid metals.
Quartz: fluxing effect is mainly played.It can be used for adjusting the physical and chemical performance of slag, reduces the surface tension of slag, changes
Kind weld face forming, improves arc voltage, refines molten drop, improve welding rod fusing coefficient.
Natural rutile: having stabilising arc and fluxing effect, can adjust fusing point, viscosity, surface tension and the mobility of slag.
Suitable TiO2Be conducive to all-position welding, improve appearance of weld, reduce splashing and undercut, and largely improves de- slag
Property.
Iron powder: appropriate iron powder can improve the deposition efficiency of welding rod, and improve welding technological properties.
Ferrosilicon: mainly play component controlling.Product after Si deoxidation is SiO2, belong to acidic oxide, it
The activity of FeO in the basicity and slag of slag is reduced, while playing fluxing effect.
Manganese metal: mainly play component controlling.Product after Mn deoxidation is MnO, belongs to basic anhydride, it
The basicity of slag is improved, while playing slag making.
Almag: deoxidation is mainly played.
Soda ash: it is main to act the slip for increasing coating wet-milling, it is convenient for welding rod extrusion.
Welding rod design of the invention is using full core wire transient mode, and so as to avoid occurring, weld metal element is uneven
Property, the stability of weld metal when ensure that pipeline all position welding.
Compared with prior art, welding technological properties of the invention is excellent, arc stability in welding process, substantially without flying
Splash, the removability of slag is good, molten bath is clear, appearance of weld is beautiful, and welding rod operating characteristics is good；With excellent deposited metal intensity,
The performances such as impact flexibility.
Specific embodiment
The present invention is described in detail combined with specific embodiments below.
Embodiment 1
The component and its mass percentage of coating are as follows: 45% marble, 25% fluorite, 5% quartz, 5% natural golden
Red stone, 10.8% iron powder, 4% manganese metal, 3% ferrosilicon, 1.0% almag, 1.2% soda ash.
Core wire ingredient and mass percentage are as follows: 0.12%C, 0.60%Mn, 0.05%Si, 9.20%Cr, 1.70%W,
0.08%Nb, 0.80%Ni, 0.60%Mo, 0.004%B, 0.22%V, 0.05%N, 0.003%S, 0.0060%P, remaining is
Fe。
After mixing by above-mentioned coating raw material, with the sieve of 40 mesh to 40 mesh hereinafter, dry powder after mixing evenly
Be added and account for the pure sodium silicate of solid component mass content 20%, after being stirred for uniformly, by conventional welding rod production equipment by its
Extrusion prepares welding rod on above-mentioned core wire (specification is 3.2mm diameter).The electrode surface produced is smooth, high yield rate, nothing
It is eccentric.
Welding condition are as follows: preheating and interlayer temperature: 200~250 DEG C；Welding current: 100~120A；Weldingvoltage:
23~26V；Post weld heat treatment: (760 ± 15) DEG C × 2h；Heating rate: 80~120 DEG C/h；Rate of temperature fall: 100~150 DEG C.
The deposited metal composition of welding rod is detected: C:0.10%, Mn:0.75%, Si:0.21%, Cr:
8.60%, Ni:0.63%, Mo:0.46%, V:0.20%, Nb:0.06%, W:1.64%, B:0.0010%, S:0.004%,
P:0.012%, N:0.040%.
Ambient temperature mechanical properties Rm: 790MPa, Rel: 660MPa；Average KV2: 63J.Deposited metal diffusible hydrogen content is
1.79ml/100g。
Embodiment 2
The mass fraction of coating each component is as follows: marble: 40%, fluorite: 22%, quartz 6%, natural rutile 4%,
Iron powder: 16.5%, manganese metal: 4%, ferrosilicon: 5%, almag: 1.5%, soda ash: 1.0%.
Core wire ingredient and mass percentage are as follows: 0.13%C, 0.80%Mn, 0.03%Si, 9.35%Cr, 1.68%W,
0.06%Nb, 0.70%Ni, 0.65%Mo, 0.005%B, 0.22%V, 0.06%N, 0.004%S, 0.0080%P, remaining is
Fe。
The preparation method of welding rod is same as Example 1, and the electrode surface produced is smooth, high yield rate, without acceptance of persons.Welding
Technological parameter is same as Example 1.
The deposited metal composition of welding rod is detected: C:0.09%, Mn:0.66%, Si:0.19%, Cr:
8.64%, Ni:0.59%, Mo:0.48%, V:0.18%, Nb:0.05%, W:1.59%, B:0.0020%, S:0.004%,
P:0.011%, N:0.035%.
Ambient temperature mechanical properties Rm: 795MPa, Rel: 685MPa；Average KV2: 59J.Deposited metal diffusible hydrogen content is
2.0ml/100g。
Embodiment 3
The mass fraction of coating each component is as follows: marble: 36%, fluorite: 20%, quartz 7%, natural rutile 5%,
Iron powder: 21.2%, manganese metal: 3%, ferrosilicon: 6%, almag: 1.0%, soda ash: 0.8%.
Core wire ingredient and mass percentage are as follows: 0.12%C, 0.80%Mn, 0.10%Si, 9.10%Cr, 1.60%W,
0.04%Nb, 0.75%Ni, 0.55%Mo, 0.0050%B, 0.20%V, 0.04%N, 0.005%S, 0.0090%P, remaining
For Fe.
The preparation method of welding rod is same as Example 1, and the electrode surface produced is smooth, high yield rate, without acceptance of persons.Welding
Technological parameter is same as Example 1.
The deposited metal composition of welding rod is detected: C:0.10%, Mn:0.78%, Si:0.23%, Cr:
8.83%, Ni:0.62%, Mo:0.48%, V:0.18%, Nb:0.03%, W:1.50%, B:0.0040%, S:0.003%,
P:0.012%, N:0.030%.
Ambient temperature mechanical properties Rm: 730MPa, Rel: 597MPa；Average KV2: 69J.Deposited metal diffusible hydrogen content is
1.95ml/100g。
Embodiment 4
The component and its mass percentage of coating are as follows: 42% marble, 24% fluorite, 6% quartz, 4% natural golden
Red stone, 11.5% iron powder, 4% manganese metal, 6% ferrosilicon, 1.5% almag, 1% soda ash.
Core wire ingredient and mass percentage are as follows: 0.08%C, 0.20%Mn, 0.01%Si, 8.50%Cr, 1.55%W,
0.03%Nb, 0.30%Ni, 0.35%Mo, 0.001%B, 0.15%V, 0.03%N, 0.001%S, 0.0010%P, remaining is
Fe。
After mixing by above-mentioned coating raw material, with the sieve of 40 mesh to 40 mesh hereinafter, dry powder after mixing evenly
Be added and account for the pure sodium silicate of solid component mass content 19%, after being stirred for uniformly, by conventional welding rod production equipment by its
Extrusion prepares welding rod on above-mentioned core wire (specification is 3.2mm diameter).The electrode surface produced is smooth, high yield rate, nothing
It is eccentric.
Welding condition are as follows: preheating and interlayer temperature: 200~250 DEG C；Welding current: 100~120A；Weldingvoltage:
23~26V；Post weld heat treatment: (760 ± 15) DEG C × 2h；Heating rate: 80~120 DEG C/h；Rate of temperature fall: 100~150 DEG C.
Embodiment 5
The component and its mass percentage of coating are as follows: 31.5% marble, 28% fluorite, 8% quartz, 6% are naturally
Rutile, 10% iron powder, 6% manganese metal, 7% ferrosilicon, 2.0% almag, 1.5% soda ash.
Core wire ingredient and mass percentage are as follows: 0.10%C, 0.50%Mn, 0.2%Si, 9.50%Cr, 1.95%W,
0.05%Nb, 0.60%Ni, 0.5%Mo, 0.003%B, 0.25%V, 0.04%N, 0.008%S, 0.010%P, remaining is
Fe。
After mixing by above-mentioned coating raw material, with the sieve of 40 mesh to 40 mesh hereinafter, dry powder after mixing evenly
Be added and account for the pure sodium silicate of solid component mass content 23%, after being stirred for uniformly, by conventional welding rod production equipment by its
Extrusion prepares welding rod on above-mentioned core wire (specification is 3.2mm diameter).The electrode surface produced is smooth, high yield rate, nothing
It is eccentric.
Welding condition are as follows: preheating and interlayer temperature: 200~250 DEG C；Welding current: 100~120A；Weldingvoltage:
23~26V；Post weld heat treatment: (760 ± 15) DEG C × 2h；Heating rate: 80~120 DEG C/h；Rate of temperature fall: 100~150 DEG C.
Embodiment 6
The component and its mass percentage of coating are as follows: 30% marble, 28% fluorite, 6% quartz, 4% natural golden
Red stone, 25% iron powder, 2% manganese metal, 4% ferrosilicon, 0.5% almag, 0.5% soda ash.
Core wire ingredient and mass percentage are as follows: 0.10%C, 0.50%Mn, 0.2%Si, 9.50%Cr, 1.95%W,
0.05%Nb, 0.60%Ni, 0.5%Mo, 0.003%B, 0.25%V, 0.04%N, 0.008%S, 0.010%P, remaining is
Fe。
After mixing by above-mentioned coating raw material, with the sieve of 40 mesh to 40 mesh hereinafter, dry powder after mixing evenly
Be added and account for the pure sodium silicate of solid component mass content 23%, after being stirred for uniformly, by conventional welding rod production equipment by its
Extrusion prepares welding rod on above-mentioned core wire (specification is 3.2mm diameter).The electrode surface produced is smooth, high yield rate, nothing
It is eccentric.
Welding condition are as follows: preheating and interlayer temperature: 200~250 DEG C；Welding current: 100~120A；Weldingvoltage:
23~26V；Post weld heat treatment: (760 ± 15) DEG C × 2h；Heating rate: 80~120 DEG C/h；Rate of temperature fall: 100~150 DEG C.
Embodiment 7
The component and its mass percentage of coating are as follows: 50% marble, 15% fluorite, 2% quartz, 2% natural golden
Red stone, 21% iron powder, 4% manganese metal, 4% ferrosilicon, 1% almag, 1% soda ash.
Core wire ingredient and mass percentage are as follows: 0.10%C, 0.50%Mn, 0.2%Si, 9.50%Cr, 1.95%W,
0.05%Nb, 0.60%Ni, 0.5%Mo, 0.003%B, 0.25%V, 0.04%N, 0.008%S, 0.010%P, remaining is
Fe。
After mixing by above-mentioned coating raw material, with the sieve of 40 mesh to 40 mesh hereinafter, dry powder after mixing evenly
Be added and account for the pure sodium silicate of solid component mass content 23%, after being stirred for uniformly, by conventional welding rod production equipment by its
Extrusion prepares welding rod on above-mentioned core wire (specification is 3.2mm diameter).The electrode surface produced is smooth, high yield rate, nothing
It is eccentric.
Welding condition are as follows: preheating and interlayer temperature: 200~250 DEG C；Welding current: 100~120A；Weldingvoltage:
23~26V；Post weld heat treatment: (760 ± 15) DEG C × 2h；Heating rate: 80~120 DEG C/h；Rate of temperature fall: 100~150 DEG C.
The above description of the embodiments is intended to facilitate ordinary skill in the art to understand and use the invention.
Person skilled in the art obviously easily can make various modifications to these embodiments, and described herein general
Principle is applied in other embodiments without having to go through creative labor.Therefore, the present invention is not limited to the above embodiments, ability
Field technique personnel announcement according to the present invention, improvement and modification made without departing from the scope of the present invention all should be of the invention
Within protection scope.
Claims (6)
1. a kind of T/P92 heat resistant steel electrode, is made of core wire and coating, which is characterized in that the core wire include following component and
Mass percentage:
Remaining is Fe.
2. a kind of T/P92 heat resistant steel electrode according to claim 1, which is characterized in that the coating includes following components
With mass parts content:
3. a kind of T/P92 heat resistant steel electrode according to claim 2, which is characterized in that the coating includes following components
With mass parts content:
4. a kind of T/P92 heat resistant steel electrode according to claim 1, which is characterized in that the granularity of the coating is less than 40
Mesh.
5. a kind of preparation method of T/P92 heat resistant steel electrode according to claim 1 to 4, which is characterized in that including
Following steps:
(1) coating component is uniformly mixed；
(2) pure sodium silicate is added in coating, extrusion is on core wire after mixing evenly；
(3) it is put into progress welding rod preparation in welding rod production equipment.
6. a kind of preparation method of T/P92 heat resistant steel electrode according to claim 5, which is characterized in that pure sodium water is added
The amount of glass is the 19-23% of coating component quality.
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|---|---|---|---|---|
| CN111590239A (en) * | 2020-06-28 | 2020-08-28 | 昆山京群焊材科技有限公司 | Martensite heat-resistant steel welding rod for ultra-supercritical thermal power generating unit and preparation method thereof |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101181768A (en) * | 2007-12-14 | 2008-05-21 | 国网北京电力建设研究院 | Ultra-low hydrogen basic electrode for P92 steel welding |
| CN101362257A (en) * | 2008-10-08 | 2009-02-11 | 四川大西洋焊接材料股份有限公司 | Electric welding rod for hand welding X80 grade steel oil, gas transmission pipe |
| CN101664859A (en) * | 2008-09-05 | 2010-03-10 | 天津诚信达金属检测技术有限公司 | T/P92 steel welding rod |
| 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 |
| CN102825400A (en) * | 2012-09-20 | 2012-12-19 | 天津市永昌焊丝有限公司 | Alkaline welding strip for improving smelting uniformity of drug coating |
| CN103128463A (en) * | 2013-03-14 | 2013-06-05 | 西南石油大学 | Abrasion-resistant and corrosion-resistant iron-based amorphous surfacing welding electrode and manufacturing method thereof |
| CN103878506A (en) * | 2013-11-29 | 2014-06-25 | 中国船舶重工集团公司第七二五研究所 | Low-strength high-toughness and heat-resistant steel welding rod |
| CN104117788A (en) * | 2014-08-06 | 2014-10-29 | 武汉铁锚焊接材料股份有限公司 | Low hydrogen type super-critical ferrite heat resistant steel electrode |
| CN103008917B (en) * | 2012-12-19 | 2015-01-28 | 四川大西洋焊接材料股份有限公司 | Ultra-supercritical novel ferrite heat-resistant steel welding electrode |
| CN107138876A (en) * | 2017-06-30 | 2017-09-08 | 武汉大学 | A kind of low nickel cupric type T/P92 steel wldings of high temperature creep-resisting |
| JP2018122329A (en) * | 2017-01-31 | 2018-08-09 | 株式会社神戸製鋼所 | Coated arc welding electrode |
-
2019
- 2019-05-17 CN CN201910414127.0A patent/CN110000490A/en active Pending
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101181768A (en) * | 2007-12-14 | 2008-05-21 | 国网北京电力建设研究院 | Ultra-low hydrogen basic electrode for P92 steel welding |
| CN101664859A (en) * | 2008-09-05 | 2010-03-10 | 天津诚信达金属检测技术有限公司 | T/P92 steel welding rod |
| CN101362257A (en) * | 2008-10-08 | 2009-02-11 | 四川大西洋焊接材料股份有限公司 | Electric welding rod for hand welding X80 grade steel oil, gas transmission pipe |
| 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 |
| CN102825400A (en) * | 2012-09-20 | 2012-12-19 | 天津市永昌焊丝有限公司 | Alkaline welding strip for improving smelting uniformity of drug coating |
| CN103008917B (en) * | 2012-12-19 | 2015-01-28 | 四川大西洋焊接材料股份有限公司 | Ultra-supercritical novel ferrite heat-resistant steel welding electrode |
| CN103128463A (en) * | 2013-03-14 | 2013-06-05 | 西南石油大学 | Abrasion-resistant and corrosion-resistant iron-based amorphous surfacing welding electrode and manufacturing method thereof |
| CN103878506A (en) * | 2013-11-29 | 2014-06-25 | 中国船舶重工集团公司第七二五研究所 | Low-strength high-toughness and heat-resistant steel welding rod |
| CN104117788A (en) * | 2014-08-06 | 2014-10-29 | 武汉铁锚焊接材料股份有限公司 | Low hydrogen type super-critical ferrite heat resistant steel electrode |
| JP2018122329A (en) * | 2017-01-31 | 2018-08-09 | 株式会社神戸製鋼所 | Coated arc welding electrode |
| CN107138876A (en) * | 2017-06-30 | 2017-09-08 | 武汉大学 | A kind of low nickel cupric type T/P92 steel wldings of high temperature creep-resisting |
Non-Patent Citations (2)
| Title |
|---|
| 吕天民等: "《T/P92钢焊条的研制及其性能测试研究", 《焊接》 * |
| 电力工业部建设协调司: "《焊工技术问答（第2版）》", 31 October 1997 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111590239A (en) * | 2020-06-28 | 2020-08-28 | 昆山京群焊材科技有限公司 | Martensite heat-resistant steel welding rod for ultra-supercritical thermal power generating unit and preparation method thereof |
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