CN106514040B - A kind of gas shielded stainless flux-cored wire and its production technology for boiler-burner - Google Patents
A kind of gas shielded stainless flux-cored wire and its production technology for boiler-burner Download PDFInfo
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- CN106514040B CN106514040B CN201610962086.5A CN201610962086A CN106514040B CN 106514040 B CN106514040 B CN 106514040B CN 201610962086 A CN201610962086 A CN 201610962086A CN 106514040 B CN106514040 B CN 106514040B
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Classifications
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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
- B23K35/3086—Fe as the principal constituent with Cr as next major constituent containing Ni or Mn
-
- 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
- B23K35/362—Selection of compositions of fluxes
-
- 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
-
- 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
- B23K35/406—Filled tubular wire or rods
Abstract
The invention discloses a kind of gas shielded stainless flux-cored wires and its production technology for boiler-burner; the flux-cored wire is made of super-low carbon stainless steel steel band and the medicine core being wrapped in the steel band; the production technology is medicine core to be wrapped in super-low carbon stainless steel steel band using precise forming technique, then turn to flux-cored wire by finish draw tube reducing, surface treatment and solid matter layer.The gas shielded stainless flux-cored wire for boiler-burner that the present invention researches and develops can weld S30815 austenitic stainless cast steel part and forging; its weld seam has higher creep resistant type ability and creep rupture strength; there is good resistance to high temperature corrosion ability and resistance to weighing apparatus brush corrosive power in majority of gas medium; yield strength, tensile strength and enough machinabilities with higher when high temperature, deposition efficiency is high, more attractive, welding condition setting is formed than solid welding wire is easier and is easy to carry out semi-automatic and automatic welding.
Description
Technical field
The invention belongs to welding technology fields, more particularly, are related to a kind of meeting GB/T17853 standard and ASME standard
What middle E308 was required, which be mainly used for, welds S30815 austenitic stainless cast steel part and forging (such as boiler-burner, continuous casting is set
Standby, rolling mill, heat-treatment furnace, cement manufacture plant etc.) gas shielded stainless flux-cored wire and its production technology.
Background technique
The structure of boiler entirety includes boiler body, ancillary equipment and safety device two large divisions, and burner is as one
The kind higher electromechanical integration equipment of the degree of automation is one of the main component for constituting boiler body.Thermal power generation is China master
The generation mode wanted, three big host equipments one of of the station boiler as firepower power station, along with the development of China's Thermal Power Generation Industry
And develop.
For a long time, stainless steel stick electrode and stainless steel solid is mainly used to weld for the welding material of boiler-burner
Silk.It is well known that the deposition efficiency of welding rod is low, automation, semi-automatic welding not can be carried out；Solid welding wire welding bead molding compared with
Difference, stability are general and postwelding oxide is more, and electric current, voltage adaptation range are small；Many defects of above two wlding restrict
Boiler-burner weld job is toward development on higher quality, higher efficiency road.
Therefore, develop it is a kind of it is higher than welding rod deposition efficiency, form the setting of more attractive, welding condition than solid welding wire and be easier
And it is easy to carry out semi-automatic and automatic welding stainless flux-cored wire with high practicability and strategic value.
Summary of the invention
In order to solve the problems in the existing technology, the object of the present invention is to provide one kind can substitute it is corresponding stainless
The gas shielded stainless flux-cored wire and its production technology for boiler-burner of steel electrode and solid welding wire.
An aspect of of the present present invention provides the gas shielded stainless flux-cored wire for boiler-burner, the flux-cored wire
It is made of super-low carbon stainless steel steel band and the medicine core being wrapped in the steel band, wherein by percentage to the quality, the medicine core
Weight accounts for 22~28wt% of the flux-cored wire total weight, and the super-low carbon stainless steel steel band includes following component: C≤
1.30~1.60wt% of 0.02wt%, Mn, Si≤0.40wt%, 18.0~19.5wt% of Cr, 8.0~10.5wt% of Ni；Cu
The Fe of≤0.20wt%, S≤0.01wt%, P≤0.025wt%, N≤0.050wt%, Co≤0.20wt% and surplus and not
Evitable impurity；
In parts by weight, the medicine core includes following components: 5.0~8.5 parts of natural rutile, quartz sand 0.2~2.0
Part, 0.1~0.4 part of zircon sand, 0.2~1.0 part of albite, 0.2~1.0 part of sodium fluoride, 0.1~0.5 part of magnesium powder, nitrided ferro-chromium
0.75~2.5 part, spraying 2.0~4.0 parts of ferrosilicon, 0.2~0.5 part of electrolytic manganese, 3.5~7.0 parts of crome metal and nickel powder 1.0~
3.5 part.
One embodiment for the gas shielded stainless flux-cored wire of boiler-burner according to the present invention, with quality percentage
TiO than counting, in the natural rutile2>=95.0wt%；SiO in quartz sand2>=99.0wt%；ZrO in zircon sand2
Content is 57~63wt% and SiO2≤ 35wt%；Na in albite2O >=8wt%, SiO2>=63wt% and Al2O3≥
16wt%；NaF >=98wt% in sodium fluoride；Mg >=98.5wt% in magnesium powder；Cr >=60wt% and N in nitrided ferro-chromium >=
5wt%；Si content in spraying ferrosilicon is 42~47wt%；Mn >=99.5wt% in electrolytic manganese；Cr in crome metal >=
98wt%；Ni >=99.5wt% in nickel powder.
One embodiment for the gas shielded stainless flux-cored wire of boiler-burner according to the present invention, with parts by weight
Meter, the medicine core includes following components:
Containing TiO28.5 parts of the natural rutile of 96.52wt%；
Containing SiO20.4 part of the quartz sand of 99.4wt%；
Containing ZrO261.1wt%, SiO20.1 part of the zircon sand of 33.4wt%；
Containing Na2O 11.2wt%, SiO265.1wt%, Al2O30.2 part of the albite of 16.8wt%；
0.45 part of the sodium fluoride of the 99.6wt% containing NaF；
0.45 part of the magnesium powder of the 99.3wt% containing Mg；
2.3 parts of nitrided ferro-chromium of 66.2wt% containing Cr, N 7.7wt%；
2.0 parts of spraying ferrosilicon of the 45.6wt% containing Si；
0.45 part of the electrolytic manganese of the 99.7wt% containing Mn；
7.0 parts of the crome metal of the 98.9wt% containing Cr；
1.0 parts of the nickel powder of the 99.7wt% containing Ni.
One embodiment for the gas shielded stainless flux-cored wire of boiler-burner according to the present invention, with parts by weight
Meter, the medicine core includes following components:
Containing TiO25.0 parts of the natural rutile of 96.52wt%；
Containing SiO22.0 parts of the quartz sand of 99.4wt%；
Containing ZrO261.1wt%, SiO20.3 part of the zircon sand of 33.4wt%；
Containing Na2O 11.2wt%, SiO265.1wt%, Al2O30.8 part of the albite of 16.8wt%；
0.85 part of the sodium fluoride of the 99.6wt% containing NaF；
0.15 part of the magnesium powder of the 99.3wt% containing Mg；
0.75 part of nitrided ferro-chromium of 66.2wt% containing Cr, N 7.7wt%；
3.8 parts of spraying ferrosilicon of the 45.6wt% containing Si；
0.2 part of the electrolytic manganese of the 99.7wt% containing Mn；
5.5 parts of the crome metal of the 98.9wt% containing Cr；
3.5 parts of the nickel powder of the 99.7wt% containing Ni.
One embodiment for the gas shielded stainless flux-cored wire of boiler-burner according to the present invention, with parts by weight
Meter, the medicine core includes following components:
Containing TiO26.5 parts of the natural rutile of 96.52wt%；
Containing SiO21.5 parts of the quartz sand of 99.4wt%；
Containing ZrO261.1wt%, SiO20.4 part of the zircon sand of 33.4wt%；
Containing Na2O 11.2wt%, SiO265.1wt%, Al2O31.0 parts of the albite of 16.8wt%；
0.6 part of the sodium fluoride of the 99.6wt% containing NaF；
0.2 part of the magnesium powder of the 99.3wt% containing Mg；
1.5 parts of nitrided ferro-chromium of 66.2wt% containing Cr, N 7.7wt%；
3.0 parts of spraying ferrosilicon of the 45.6wt% containing Si；
0.3 part of the electrolytic manganese of the 99.7wt% containing Mn；
6.0 parts of the crome metal of the 98.9wt% containing Cr；
3.0 parts of the nickel powder of the 99.7wt% containing Ni.
One embodiment for the gas shielded stainless flux-cored wire of boiler-burner according to the present invention, with quality percentage
Than meter, the welding deposited metal of the flux-cored wire includes following component: 0.010~0.070wt% of C, Mn 0.30~
1.40~2.00wt% of 0.80wt%, Si, S≤0.020wt%, P≤0.030wt%, 20.00~22.00wt% of Cr, Ni
9.00~11.00wt%, Mo≤0.75wt%, 0.08~0.18wt% of N, 0.01~0.05wt% of Re, V≤0.08%, Cu
≤ 0.05%, Al≤0.05% and the Fe and inevitable impurity of surplus；The X of the welding deposited metal at normal temperature is penetrated
Line flaw detection grade is I grades, tensile strength Rm >=664Mpa, elongation percentage A >=36%, longitudinal just curved qualification.
Another aspect provides the productions of the above-mentioned gas shielded stainless flux-cored wire for boiler-burner
The medicine core is wrapped in the super-low carbon stainless steel steel band by technique using precise forming technique, then passes through finish draw tube reducing, table
Surface treatment and solid matter layer turn to the flux-cored wire.
It, will according to one embodiment of the production technology of the gas shielded stainless flux-cored wire for boiler-burner
The each component of the medicine core keeps the temperature 2~4 hours under the conditions of 200~250 DEG C and is using precise forming technique after mixing evenly
The medicine core is wrapped in the super-low carbon stainless steel steel band, by the accurate drawing tube reducing of pure CRD to defined gage of wire,
Online annealing is carried out again to eliminate processing hardening and be cleaned processing after welding wire surface oil stain is carbonized, it is finally equal in welding wire surface
The flux-cored wire is turned to by solid matter layer after one layer of lubricant of even coating.
The gas shielded stainless flux-cored wire for boiler-burner that the present invention researches and develops can weld S30815 austenite
Stainless cast steel part and forging (such as boiler-burner, continuous casting equipment, rolling mill, heat-treatment furnace, cement manufacture plant),
Weld seam has higher creep resistant type ability and creep rupture strength, has good resistance to high temperature corrosion in majority of gas medium
Ability and resistance to weighing apparatus brush corrosive power, when high temperature yield strength, tensile strength and enough machinabilities with higher, melt
High-efficient, more more attractive than solid welding wire molding, welding condition setting is applied to be easier and be easy to carry out semi-automatic and automatic welding.
Specific embodiment
All features disclosed in this specification or disclosed all methods or in the process the step of, in addition to mutually exclusive
Feature and/or step other than, can combine in any way.
Any feature disclosed in this specification unless specifically stated can be equivalent or with similar purpose by other
Alternative features are replaced.That is, unless specifically stated, each feature is an example in a series of equivalent or similar characteristics
?.
First the gas shielded stainless flux-cored wire for boiler-burner of the invention is described in detail below.
An exemplary embodiment of the present invention, the gas shielded stainless flux-cored wire for boiler-burner is by surpassing
Low carbon stainless steel steel band and the medicine core being wrapped in the steel band form, wherein by percentage to the quality, the weight of medicine core accounts for medicine
22~28wt% of core welding wire total weight.Specifically, super-low carbon stainless steel steel band includes following component: C≤0.02wt%, Mn
1.30~1.60wt%, Si≤0.40wt%, 18.0~19.5wt% of Cr, 8.0~10.5wt% of Ni；Cu≤0.20wt%, S
The Fe of≤0.01wt%, P≤0.025wt%, N≤0.050wt%, Co≤0.20wt% and surplus and inevitably miscellaneous
Matter.
Also, in parts by weight, medicine core includes following components: 5.0~8.5 parts of natural rutile, quartz sand 0.2~2.0
Part, 0.1~0.4 part of zircon sand, 0.2~1.0 part of albite, 0.2~1.0 part of sodium fluoride, 0.1~0.5 part of magnesium powder, nitrided ferro-chromium
0.75~2.5 part, spraying 2.0~4.0 parts of ferrosilicon, 0.2~0.5 part of electrolytic manganese, 3.5~7.0 parts of crome metal and nickel powder 1.0~
3.5 part.The medicine core of said components and proportion can be cooperatively formed with super-low carbon stainless steel steel band meets S30815 austenite stainless
Steel casting and forging (such as boiler-burner, continuous casting equipment, rolling mill, heat-treatment furnace, cement manufacture plant) welding are wanted
The stainless flux-cored wire asked.The welding wire has filled up the blank of the flux-cored wire category for welding S30815 steel, and can be complete
The Manual electric welding item and solid welding wire of U.S. substitution the type are used for the all-position welding of S30815 steel.
Specifically, electric arc and slag making are mainly stablized in the effect of golden red mountain flour in medicine core, can be adjusted the fusing point of slag, be glued
Degree, surface tension and mobility improve appearance of weld, reduce and splash.The golden red mountain flour butt welding being added in the present invention be seamed into shape,
Arc stability plays a crucial role.The main function of quartz sand be slag making, adjust the pH value of slag, viscosity, surface tension and
Mobility.Zircon sand forms zirconium oxide under electric arc heat effect, and zirconium oxide can refine crystal grain, prevents from forming intergranular oxidation object.
The effect that albite mainly takes on slag making, improves arc stability.The main function of sodium fluoride is dehydrogenation and the work for improving welding wire
Skill performance.Magnesium powder, which is easy to react with the oxygen in weld seam, mainly to be played precedent desoxydation and stablizes arcing.Nitrided ferro-chromium master
Transition nitrogen weld seam tensile strength is improved into weld seam.Spraying ferrosilicon transition element silicon into weld seam plays reduction and takes off
Oxygen effect, and the elastic limit, yield point and tensile strength of weld seam can be improved.Electrolytic manganese is main deoxidier and de- in medicine core
Sulphur agent, and can be improved the quenching property of weld seam, improve hot-working character.The main function of crome metal is the transition chromium into weld seam
Improve the inoxidizability and corrosion resistance of weld seam.The main function of nickel powder is the transition nickel element into weld seam, improves weld seam
Plasticity and toughness keep antirust and heat resistance under high temperature.
In order to guarantee that the welding performance of welding rod is met the requirements and more excellent, each component need to meet following requirement in coating: with matter
Measure percentages, the TiO in natural rutile2>=95.0wt%；SiO in quartz sand2>=99.0wt%；In zircon sand
ZrO2Content is 57~63wt% and SiO2≤ 35wt%；Na in albite2O >=8wt%, SiO2>=63wt% and Al2O3≥
16wt%；NaF >=98wt% in sodium fluoride；Mg >=98.5wt% in magnesium powder；Cr >=60wt% and N in nitrided ferro-chromium >=
5wt%；Si content in spraying ferrosilicon is 42~47wt%；Mn >=99.5wt% in electrolytic manganese；Cr in crome metal >=
98wt%；Ni >=99.5wt% in nickel powder.
According to a preferred embodiment of the present invention, in parts by weight, the medicine core that the present invention uses includes following components: being contained
TiO28.5 parts of the natural rutile of 96.52wt%；Containing SiO20.4 part of the quartz sand of 99.4wt%；Containing ZrO261.1wt%,
SiO20.1 part of the zircon sand of 33.4wt%；Containing Na2O 11.2wt%, SiO265.1wt%, Al2O3The albite of 16.8wt%
0.2 part；0.45 part of the sodium fluoride of the 99.6wt% containing NaF；0.45 part of the magnesium powder of the 99.3wt% containing Mg；66.2wt% containing Cr, N
2.3 parts of the nitrided ferro-chromium of 7.7wt%；2.0 parts of spraying ferrosilicon of the 45.6wt% containing Si；The electrolytic manganese 0.45 of the 99.7wt% containing Mn
Part；7.0 parts of the crome metal of the 98.9wt% containing Cr；1.0 parts of the nickel powder of the 99.7wt% containing Ni.
Another preferred embodiment according to the present invention, in parts by weight, the medicine core includes following components: containing TiO2
5.0 parts of the natural rutile of 96.52wt%；Containing SiO22.0 parts of the quartz sand of 99.4wt%；Containing ZrO261.1wt%, SiO2
0.3 part of the zircon sand of 33.4wt%；Containing Na2O 11.2wt%, SiO265.1wt%, Al2O3The albite 0.8 of 16.8wt%
Part；0.85 part of the sodium fluoride of the 99.6wt% containing NaF；0.15 part of the magnesium powder of the 99.3wt% containing Mg；66.2wt% containing Cr, N
0.75 part of the nitrided ferro-chromium of 7.7wt%；3.8 parts of spraying ferrosilicon of the 45.6wt% containing Si；The electrolytic manganese 0.2 of the 99.7wt% containing Mn
Part；5.5 parts of the crome metal of the 98.9wt% containing Cr；3.5 parts of the nickel powder of the 99.7wt% containing Ni.
Another preferred embodiment according to the present invention, in parts by weight, the medicine core includes following components: containing TiO2
6.5 parts of the natural rutile of 96.52wt%；Containing SiO21.5 parts of the quartz sand of 99.4wt%；Containing ZrO261.1wt%, SiO2
0.4 part of the zircon sand of 33.4wt%；Containing Na2O 11.2wt%, SiO265.1wt%, Al2O3The albite 1.0 of 16.8wt%
Part；0.6 part of the sodium fluoride of the 99.6wt% containing NaF；0.2 part of the magnesium powder of the 99.3wt% containing Mg；66.2wt% containing Cr, N
1.5 parts of the nitrided ferro-chromium of 7.7wt%；3.0 parts of spraying ferrosilicon of the 45.6wt% containing Si；The electrolytic manganese 0.3 of the 99.7wt% containing Mn
Part；6.0 parts of the crome metal of the 98.9wt% containing Cr；3.0 parts of the nickel powder of the 99.7wt% containing Ni.
When gas shielded stainless flux-cored wire using the present invention for boiler-burner is welded, with mass percent
Meter, the welding deposited metal of the flux-cored wire include following component: 0.010~0.070wt% of C, Mn 0.30~
1.40~2.00wt% of 0.80wt%, Si, S≤0.020wt%, P≤0.030wt%, 20.00~22.00wt% of Cr, Ni
9.00~11.00wt%, Mo≤0.75wt%, 0.08~0.18wt% of N, 0.01~0.05wt% of Re, V≤0.08%, Cu
≤ 0.05%, Al≤0.05% and the Fe and inevitable impurity of surplus；And the welding deposited metal is at normal temperature
X-ray inspection grade be I grade, tensile strength Rm >=664Mpa, elongation percentage A >=36%, longitudinally just it is curved (D=(4) a α=
(180 °) qualified, and GB/T4334-2008E method is inclined to without intercrystalline corrosion.
The present invention is illustrated for the production technology of the gas shielded stainless flux-cored wire of boiler-burner below.
Medicine core is wrapped in super-low carbon stainless steel steel band using precise forming technique by an exemplary embodiment of the present invention
In, then flux-cored wire turned to by finish draw tube reducing, surface treatment and solid matter layer.Wherein, it before carrying out aforesaid operations, needs
First according to the proportion each component of medicine core is homogenously mixed together to form medicine core, and needs to prepare in advance to meet mentioned component and want
The super-low carbon stainless steel steel band asked.
Specifically, above-mentioned medicine core is kept the temperature 2~4 hours under the conditions of 200~250 DEG C and uses precision after mixing evenly
Medicine core is wrapped in super-low carbon stainless steel steel band by moulding process, by the accurate drawing tube reducing of pure CRD to defined gage of wire,
Online annealing is carried out again to eliminate processing hardening and be cleaned processing after welding wire surface oil stain is carbonized, it is then equal in welding wire surface
It is even to coat one layer of lubricant to guarantee the Wire Performance of welding wire, finally flux-cored wire is turned to by solid matter layer.
It should be understood that above embodiment and following embodiment that the present invention is described in detail are merely to illustrate the present invention rather than limit
The scope of the present invention processed, some nonessential improvement and tune that those skilled in the art's above content according to the present invention is made
It is whole to all belong to the scope of protection of the present invention.
The present invention is further explained in the light of specific embodiments.
Embodiment 1:
The super-low carbon stainless steel steel band of 77.15kg is chosen, by percentage to the quality, the super-low carbon stainless steel steel band includes
Following component (wt%): C 0.0097, Mn 1.36, Si 0.30, Cr 18.56, Ni 10.43, Cu 0.004, S 0.0004, P
0.012, the Fe and inevitable impurity of N 0.021, Co 0.011 and surplus.
The medicine core of 22.85kg is chosen, the weight of each component is as follows in medicine core: containing TiO2The natural rutile of 96.52wt%
8.5kg contains SiO2The quartz sand 0.4kg of 99.4wt%；Containing ZrO261.1wt%, SiO2The zircon sand 0.1kg of 33.4wt%,
Containing Na2O 11.2wt%, SiO265.1wt%, Al2O3The fluorination of the albite 0.2kg, the 99.6wt% containing NaF of 16.8wt%
The nitrided ferro-chromium 2.3kg of the magnesium powder 0.45kg, 66.2wt% containing Cr of sodium 0.45kg, the 99.3wt% containing Mg, N 7.7wt%, contain
The crome metal of the electrolytic manganese 0.45kg, the 98.9wt% containing Cr of the spraying ferrosilicon 2.0kg of Si 45.6wt%, the 99.7wt% containing Mn
The nickel powder 1.0kg of 7.0kg, the 99.7wt% containing Ni.
The each component of above-mentioned medicine core is uniformly mixed according to the proportion and obtains medicine core, is wrapped in medicine core by precise forming
It states in super-low carbon stainless steel steel band, turns to 1# flux-cored wire using finish draw tube reducing, surface treatment, solid matter layer.
Above-mentioned 1# flux-cored wire is subjected to qualification of welding procedure and deposited metal soldering test according to GB/T17853-1999.
Qualification of welding procedure result is as follows: the welding arc stablility of 1# flux-cored wire, the forming of weld size rule are beautiful, winged
It splashes less, de- slag is good, deposition efficiency is up to 91.33%.The ingredient of deposited metal are as follows: C 0.021wt%, Mn 0.98wt%, Si
1.65wt%, S 0.0037wt%, P 0.013wt%, Cr 21.35wt%, Ni 8.36wt%, Mo 0.028wt%, N
The Fe and inevitable impurity of 0.10wt%, Re 0.011wt% and surplus.The mechanical property of deposited metal under room temperature: anti-
Tensile strength Rm=717Mpa, elongation percentage A=36%, X-ray are I grade, and longitudinal just curved (α=180 ° D=4a) are qualified.
Embodiment 2:
For the present embodiment in addition to the varying in weight of each component in medicine core, remaining condition and manufacturing process and embodiment 1 are all the same,
Obtain 2# flux-cored wire.
Wherein, the present embodiment chooses super-low carbon stainless steel steel band 77.15kg, chooses 22.85kg medicine core, each component in medicine core
Weight it is as follows: contain TiO2The natural rutile 5.0kg of 96.52wt% contains SiO2The quartz sand 2.0kg of 99.4wt%, contains
ZrO2The zircon sand 0.3kg of 61.1wt%, SiO2 33.4wt% contain Na2O 11.2wt%, SiO265.1wt%, Al2O3
The magnesium powder 0.15kg of the sodium fluoride 0.85kg, the 99.3wt% containing Mg of the albite 0.8kg, the 99.6wt% containing NaF of 16.8wt%,
The spraying ferrosilicon 3.8kg of the nitrided ferro-chromium 0.75kg, the 45.6wt% containing Si of 66.2wt% containing Cr, N 7.7wt% contain Mn
The nickel powder 3.5kg of the crome metal 5.5kg, the 99.7wt% containing Ni of the electrolytic manganese 0.2kg, the 98.9wt% containing Cr of 99.7wt%.
Above-mentioned 2# flux-cored wire is subjected to qualification of welding procedure and deposited metal soldering test according to GB/T17853-1999.
Qualification of welding procedure result is as follows: the welding arc stablility of 2# flux-cored wire, the forming of weld size rule are beautiful, winged
It splashes less, de- slag is good, deposition efficiency is up to 90.87%.The ingredient of deposited metal are as follows: C 0.021wt%, Mn 0.98wt%, Si
1.65wt%, S 0.0037wt%, P 0.013wt%, Cr 19.77wt%, Ni 9.27wt%, Mo 0.022wt%, N
The Fe and inevitable impurity of 0.13wt%, Re 0.013wt% and surplus.The mechanical property of deposited metal under room temperature: anti-
Tensile strength Rm=664Mpa, elongation percentage A=42%, X-ray are I grade, and longitudinal just curved (α=180 ° D=4a) are qualified.
Embodiment 3:
For the present embodiment in addition to the varying in weight of each component in medicine core, remaining condition and manufacturing process and embodiment 1 are all the same,
Obtain 3# flux-cored wire.
Wherein, the present embodiment chooses super-low carbon stainless steel steel band 76kg, chooses 24kg medicine core, the weight of each component in medicine core
It is as follows: to contain TiO2The natural rutile 6.5kg of 96.52wt% contains SiO2The quartz sand 1.5kg of 99.4wt% contains ZrO2
61.1wt%, SiO2The zircon sand 0.4kg of 33.4wt%, contain Na2O 11.2wt%, SiO265.1wt%, Al2O3
The magnesium powder 0.2kg of the sodium fluoride 0.6kg, the 99.3wt% containing Mg of the albite 1.0kg, the 99.6wt% containing NaF of 16.8wt%, contain
The spraying ferrosilicon 3.0kg of the nitrided ferro-chromium 1.5kg, the 45.6wt% containing Si of Cr 66.2wt%, N 7.7wt% contain Mn
The nickel powder 3.0kg of the crome metal 6.0kg, the 99.7wt% containing Ni of the electrolytic manganese 0.3kg, the 98.9wt% containing Cr of 99.7wt%.
Above-mentioned 3# flux-cored wire is subjected to qualification of welding procedure and deposited metal soldering test according to GB/T17853-1999.
Qualification of welding procedure result is as follows: the welding arc stablility of 3# flux-cored wire, the forming of weld size rule are beautiful, winged
It splashes less, de- slag is good, deposition efficiency is up to 91.51%.The ingredient of deposited metal are as follows: C 0.016wt%, Mn 0.79wt%, Si
1.77wt%, S 0.0027wt%, P 0.013wt%, Cr 21.84wt%, Ni 10.73wt%, Mo 0.016wt%, N
The Fe and inevitable impurity of 0.12wt%, Re 0.015wt% and surplus.The mechanical property of deposited metal under room temperature: anti-
Tensile strength Rm=677Mpa, elongation percentage A=39%, X-ray are I grade, and longitudinal just curved (α=180 ° D=4a) are qualified.
In conclusion the gas shielded stainless flux-cored wire for boiler-burner that the present invention researches and develops can weld
(such as boiler-burner, continuous casting equipment, rolling mill, heat-treatment furnace, cement are raw for S30815 austenitic stainless cast steel part and forging
Produce equipment etc.), weld seam has higher creep resistant type ability and creep rupture strength, has in majority of gas medium fine
Resistance to high temperature corrosion ability and resistance to weighing apparatus brush corrosive power, when high temperature yield strength with higher, tensile strength and enough
Machinability, deposition efficiency is high, more attractive, welding condition setting is formed than solid welding wire is easier and is easy to carry out semi-automatic
And automatic welding.
The invention is not limited to specific embodiments above-mentioned.The present invention, which expands to, any in the present specification to be disclosed
New feature or any new combination, and disclose any new method or process the step of or any new combination.
Claims (7)
1. a kind of gas shielded stainless flux-cored wire for boiler-burner, which is characterized in that the flux-cored wire is by ultralow
Carbon stainless steel steel band and the medicine core being wrapped in the steel band form, wherein by percentage to the quality, the weight of the medicine core accounts for
22~28wt% of the flux-cored wire total weight, the super-low carbon stainless steel steel band include following component: C≤0.02wt%,
1.30~1.60wt% of Mn, Si≤0.40wt%, 18.0~19.5wt% of Cr, 8.0~10.5wt% of Ni；Cu≤
The Fe of 0.20wt%, S≤0.01wt%, P≤0.025wt%, N≤0.050wt%, Co≤0.20wt% and surplus and can not
The impurity avoided；
In parts by weight, the medicine core includes following components: 5.0~8.5 parts of natural rutile, 0.2~2.0 part of quartz sand, zirconium
0.1~0.4 part of sand, 0.2~1.0 part of albite, 0.2~1.0 part of sodium fluoride, 0.1~0.5 part of magnesium powder, nitrided ferro-chromium 0.75
~2.5 parts, spraying 2.0~4.0 parts of ferrosilicon, 0.2~0.5 part of electrolytic manganese, 3.5~7.0 parts of crome metal and 1.0~3.5 parts of nickel powder；
By percentage to the quality, the welding deposited metal of the flux-cored wire includes following component: 0.010~0.070wt% of C,
0.30~0.80wt% of Mn, 1.40~2.00wt% of Si, S≤0.020wt%, P≤0.030wt%, Cr 20.00~
9.00~11.00wt% of 22.00wt%, Ni, Mo≤0.75wt%, 0.08~0.18wt% of N, 0.01~0.05wt% of Re,
V≤0.08%, Cu≤0.05%, Al≤0.05% and surplus Fe and inevitable impurity；The welding deposited metal
X-ray inspection grade at normal temperature is I grades, tensile strength Rm >=664Mpa, elongation percentage A >=36%, longitudinal just curved qualification.
2. being used for the gas shielded stainless flux-cored wire of boiler-burner according to claim 1, which is characterized in that with quality
Percentages, the TiO in the natural rutile2>=95.0wt%；SiO in quartz sand2>=99.0wt%；In zircon sand
ZrO2Content is 57~63wt% and SiO2≤ 35wt%；Na in albite2O >=8wt%, SiO2>=63wt% and Al2O3≥
16wt%；NaF >=98wt% in sodium fluoride；Mg >=98.5wt% in magnesium powder；Cr >=60wt% and N in nitrided ferro-chromium >=
5wt%；Si content in spraying ferrosilicon is 42~47wt%；Mn >=99.5wt% in electrolytic manganese；Cr in crome metal >=
98wt%；Ni >=99.5wt% in nickel powder.
3. being used for the gas shielded stainless flux-cored wire of boiler-burner according to claim 2, which is characterized in that with weight
Part meter, the medicine core includes following components:
Containing TiO28.5 parts of the natural rutile of 96.52wt%；
Containing SiO20.4 part of the quartz sand of 99.4wt%；
Containing ZrO261.1wt%, SiO20.1 part of the zircon sand of 33.4wt%；
Containing Na2O 11.2wt%, SiO265.1wt%, Al2O30.2 part of the albite of 16.8wt%；
0.45 part of the sodium fluoride of the 99.6wt% containing NaF；
0.45 part of the magnesium powder of the 99.3wt% containing Mg；
2.3 parts of nitrided ferro-chromium of 66.2wt% containing Cr, N 7.7wt%；
2.0 parts of spraying ferrosilicon of the 45.6wt% containing Si；
0.45 part of the electrolytic manganese of the 99.7wt% containing Mn；
7.0 parts of the crome metal of the 98.9wt% containing Cr；
1.0 parts of the nickel powder of the 99.7wt% containing Ni.
4. being used for the gas shielded stainless flux-cored wire of boiler-burner according to claim 2, which is characterized in that with weight
Part meter, the medicine core includes following components:
Containing TiO25.0 parts of the natural rutile of 96.52wt%；
Containing SiO22.0 parts of the quartz sand of 99.4wt%；
Containing ZrO261.1wt%, SiO20.3 part of the zircon sand of 33.4wt%；
Containing Na2O 11.2wt%, SiO265.1wt%, Al2O30.8 part of the albite of 16.8wt%；
0.85 part of the sodium fluoride of the 99.6wt% containing NaF；
0.15 part of the magnesium powder of the 99.3wt% containing Mg；
0.75 part of nitrided ferro-chromium of 66.2wt% containing Cr, N 7.7wt%；
3.8 parts of spraying ferrosilicon of the 45.6wt% containing Si；
0.2 part of the electrolytic manganese of the 99.7wt% containing Mn；
5.5 parts of the crome metal of the 98.9wt% containing Cr；
3.5 parts of the nickel powder of the 99.7wt% containing Ni.
5. being used for the gas shielded stainless flux-cored wire of boiler-burner according to claim 2, which is characterized in that with weight
Part meter, the medicine core includes following components:
Containing TiO26.5 parts of the natural rutile of 96.52wt%；
Containing SiO21.5 parts of the quartz sand of 99.4wt%；
Containing ZrO261.1wt%, SiO20.4 part of the zircon sand of 33.4wt%；
Containing Na2O 11.2wt%, SiO265.1wt%, Al2O31.0 parts of the albite of 16.8wt%；
0.6 part of the sodium fluoride of the 99.6wt% containing NaF；
0.2 part of the magnesium powder of the 99.3wt% containing Mg；
1.5 parts of nitrided ferro-chromium of 66.2wt% containing Cr, N 7.7wt%；
3.0 parts of spraying ferrosilicon of the 45.6wt% containing Si；
0.3 part of the electrolytic manganese of the 99.7wt% containing Mn；
6.0 parts of the crome metal of the 98.9wt% containing Cr；
3.0 parts of the nickel powder of the 99.7wt% containing Ni.
6. the production work as described in any one of claims 1 to 5 for the gas shielded stainless flux-cored wire of boiler-burner
Skill, which is characterized in that the medicine core is wrapped in the super-low carbon stainless steel steel band using precise forming technique, then passes through essence
Tube reducing, surface treatment and solid matter layer is drawn to turn to the flux-cored wire.
7. the production technology for the gas shielded stainless flux-cored wire of boiler-burner according to claim 6, feature
Be, each component of the medicine core is kept the temperature 2~4 hours under the conditions of 200~250 DEG C and after mixing evenly using it is accurate at
The medicine core is wrapped in the super-low carbon stainless steel steel band by type technique, passes through the accurate drawing tube reducing of pure CRD to defined weldering
Silk diameter, then carry out online annealing and eliminate processing hardening and be cleaned processing after welding wire surface oil stain is carbonized, finally welding
Silk table face uniformly coats and turns to the flux-cored wire by solid matter layer after one layer of lubricant.
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| CN107649798B (en) * | 2017-10-20 | 2020-08-18 | 西安理工大学 | Metal flux-cored wire for 25Cr2Ni4MoV steel and preparation method thereof |
| CN107971657B (en) * | 2017-11-27 | 2020-04-21 | 四川大西洋焊接材料股份有限公司 | Gas shielded flux-cored wire for welding SUS316L austenitic stainless steel cryogenic low-temperature storage and transportation container and equipment |
| CN109967917B (en) * | 2019-05-17 | 2021-06-11 | 武汉铁锚焊接材料股份有限公司 | Boiling-resistant concentrated nitric acid corrosion-resistant stainless steel flux-cored wire and preparation method thereof |
| CN110666390A (en) * | 2019-10-25 | 2020-01-10 | 王胜心 | Stainless steel flux-cored wire without oxidation color |
| CN112388202B (en) * | 2020-12-01 | 2022-06-24 | 四川大西洋焊接材料股份有限公司 | Welding wire flux core, welding wire, preparation method of welding wire and welding method |
| CN113579551B (en) * | 2021-08-13 | 2022-07-05 | 北京工业大学 | 253MA heat-resistant stainless steel flux-cored wire and preparation method thereof |
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