CN108274143A - G520 stainless steels and the stainless steel welded metal flux-cored wires and preparation method thereof of 1Cr12NiW1MoV - Google Patents
G520 stainless steels and the stainless steel welded metal flux-cored wires and preparation method thereof of 1Cr12NiW1MoV Download PDFInfo
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- CN108274143A CN108274143A CN201810218583.3A CN201810218583A CN108274143A CN 108274143 A CN108274143 A CN 108274143A CN 201810218583 A CN201810218583 A CN 201810218583A CN 108274143 A CN108274143 A CN 108274143A
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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
- B23K35/02—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by mechanical features, e.g. shape
- B23K35/0255—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by mechanical features, e.g. shape for use in welding
- B23K35/0261—Rods, electrodes, wires
- B23K35/0266—Rods, electrodes, wires flux-cored
-
- 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
- B23K35/40—Making wire or rods for soldering or welding
Abstract
Metal flux-cored wire, including medicine core and weldering skin are used the invention discloses a kind of G520 and 1Cr12NiW1MoV are stainless steel welded, wherein medicine core is composed of the following components by mass percentage：Ferrosilicon powder 1%~4%, manganese powder 16%~18%, nickel powder 18%~24%, chromium powder 34%~42%, molybdenum-iron powder 3%~6%, cobalt powder 9%~11%, cerium oxide 1%~2%, remaining is iron, and the sum of the above components mass percent is 100%.Flux-cored wire appearance of weld of the present invention is beautiful, can obtain martensitic stain less steel seam organization, and welding point has excellent mechanical property and corrosion resistance；And postwelding can carry out continuous sequence, improve welding productivity without clearing up welding bead；The flux-cored wire preparation method is simple, is suitable for automatic welder, is suitble to mass production.
Description
Technical field
The invention belongs to welding material and preparation method thereof technical fields, and in particular to G520 stainless steels and
1Cr12NiW1MoV is stainless steel welded to use metal flux-cored wire, and the invention further relates to the preparation methods of the flux-cored wire.
Background technology
In recent years, use of the large fan in China's industry is increasingly extensive, and applying working condition also becomes increasingly complex, to improve
The total quality of wind turbine, it is desirable that the blade material at wind turbine core position has the good resultant forces such as higher obdurability and hardness
Learn performance.
1Cr12NiW1MoV alloys are stainless with a kind of martensite type chromium nickel of the alloying elements multiple strengthening such as W, Mo, V, Nb
The chemical composition of steel, 1Cr12NiW1MoV stainless steels is Si：0.1%~0.35%, Mn：0.4%~0.6%, Ni：0.6%~
0.8%, Cr：10.5%~12.5%, Mo：0.60%~0.90%, W：1%~1.4% etc..It is developed by 1Cr13
, compared with same type of material (such as 1Cr11NiW2MoV, 1Cr12Ni2WMoVNb), outstanding advantages are heat resistance height, resistance to ocean
Corrosive nature is good, there is preferable anti-temper resistance and comprehensive mechanical property, and it is important resistance to be widely used in turbine blade, rotor etc.
The manufacturing of hot parts has preferable welding performance and cold and hot working.
G520 stainless steels are the improvement version stainless steels (0Cr14Ni5MoCuNb) of FV520B stainless steels, and G520 stainless steels are
A kind of novel precipitation hardening of martensitic stainless steel developed on the basis of FV520B type martensitic stain less steels has higher strong
Degree, good welding performance, heat resistance, corrosion resistance are the common used materials of natural gas centrifugal compressor impeller.
By welding together both steel, the service life of draught fan impeller can be greatlyd improve.Currently, about G520 and
1Cr12NiW1MoV stainless steel dissimilar Welding Problems only have a small amount of welding procedure in terms of report, there is not yet about its fusion welding metal
The report of type flux-cored wire.
Invention content
The object of the present invention is to provide the stainless steel welded metal mold medicine cores of a kind of G520 stainless steels and 1Cr12NiW1MoV
Welding wire, which splashes less in the welding process, appearance of weld is regular beautiful and has good welding technological properties.
It is a further object to provide the stainless steel welded metal mold medicines of G520 stainless steels and 1Cr12NiW1MoV
The preparation method of core welding wire.
The technical solution adopted in the present invention is G520 stainless steels and the stainless steel welded metal mold medicines of 1Cr12NiW1MoV
Core welding wire, including medicine core and weldering skin, wherein medicine core is composed of the following components by mass percentage：Ferrosilicon powder 1%~4%, manganese powder
16%~18%, nickel powder 18%~24%, chromium powder 34%~42%, molybdenum-iron powder 3%~6%, cobalt powder 9%~11%, cerium oxide
1%~2%, remaining is iron powder, and the sum of the above components mass percent is 100%.
The features of the present invention also characterized in that
Weldering skin is mild steel steel band, and the mass percent of steel band impurity element is：P≤0.035%, S≤0.03%.
The loading of medicine core powder is 20wt%~25wt% in flux-cored wire.
Another technical solution of the present invention is G520 stainless steels and the stainless steel welded gold of 1Cr12NiW1MoV
The preparation method of genotype flux-cored wire, is as follows：
Step 1 claims respectively by mass percentage：Ferrosilicon powder 1%~4%, manganese powder 16%~18%, nickel powder 18%~
24%, chromium powder 34%~42%, molybdenum-iron powder 3%~6%, cobalt powder 9%~11%, cerium oxide 1%~2%, remaining is iron powder, with
The sum of upper each component mass percent is 100%；
Step 2 mixes the above-mentioned ferrosilicon powder weighed, manganese powder, nickel powder, chromium powder, molybdenum-iron powder, cobalt powder, cerium oxide and iron powder
Uniformly, it is placed in drying oven and dries, obtain medicine core powder；
Step 3, by flux-cored wire producing machine the medicine core powder that step 2 obtains be wrapped in weldering it is intradermal, and using molding
Machine will weld skin and be closed, and obtain flux-cored wire semi-finished product, and first of drawing procedure is carried out after welding skin wiped clean with acetone, and first
2.6mm is in the grinding tool aperture that road drawing procedure uses；
After step 4, first of drawing procedure, reduces drawing grinding tool aperture and carry out postorder drawing, until flux-cored wire
A diameter of 1.2mm~1.6mm；
After step 5, drawing, the greasy dirt on flux-cored wire surface is removed with the cotton for being moistened with acetone, it is stainless to obtain G520
Steel and 1Cr12NiW1MoV is stainless steel welded uses metal flux-cored wire.
The features of the present invention also characterized in that
Drying temperature is 200~300 DEG C in step 2, and drying time is 2~3h.
Weldering skin in step 3 is mild steel steel band, and the mass percent of phosphorus is not more than 0.035% in steel band, the quality of sulphur
Percentage is not more than 0.03%, and the width of steel band is 7mm, thickness 0.4mm.
The loading of medicine core powder is 20wt%~25wt% in flux-cored wire in step 3.
The invention has the advantages that
(1) the stainless steel welded weldering welded with metal flux-cored wire of G520 stainless steels and 1Cr12NiW1MoV of the invention
Beautiful appearance is stitched, there is good welding usability, martensite aged stainless steel seam organization can be obtained, welding point has
Excellent mechanical property and corrosion resistance；
(2) the stainless steel welded weldering formed with metal flux-cored wire of G520 stainless steels and 1Cr12NiW1MoV of the invention
Seam surface is bright and clean, pore-free without slag inclusion, postwelding without cleaning, can continuous sequence, face of weld is bright and clean, and pore-free is without slag inclusion, weldering
It is not necessarily to cleaning afterwards, it can continuous sequence；
(3) G520 stainless steels of the invention and the stainless steel welded preparation sides with metal flux-cored wire 1Cr12NiW1MoV
Method is simple, easy to operate, is suitable for automatic welder, has higher production efficiency.
Specific implementation mode
The present invention is described in detail With reference to embodiment.
G520 stainless steels and 1Cr12NiW1MoV of the present invention are stainless steel welded to use metal flux-cored wire, including medicine core and weldering
Skin, wherein medicine core are composed of the following components by mass percentage：Ferrosilicon powder 1%~4%, manganese powder 16%~18%, nickel powder 18%
~24%, chromium powder 34%~42%, molybdenum-iron powder 3%~6%, cobalt powder 9%~11%, cerium oxide 1%~2%, remaining is iron
Powder, the sum of the above components mass percent are 100%, wherein weldering skin is mild steel steel band, the quality hundred of steel band impurity element
Point ratio is：P≤0.035%, S≤0.03%, the loading of medicine core powder is 20wt%~25wt% in flux-cored wire.
The effect of each component and function are as follows in the flux-cored wire：
Molybdenum-iron can improve the intensity of steel, hardness, and crystal grain thinning prevents temper brittleness and overheat to be inclined to, raising elevated temperature strength,
Creep strength and creep rupture strength.
Chromium has certain effect to the raising of hardness of steel, and steel can be made to generate a kind of and base in the medium with oxidisability
The passivating film of the ferrochrome oxide of body tissue firm connection, suitable chromium can improve the obdurability of weld metal.
Nickel can be completely dissolved in austenite, infinitely be expanded in austenitic area, can be reduced in welding cooling procedure
The transition temperature of austenite may advantageously facilitate the formation of acicular ferrite to inhibit the formation of blocky pro-eutectoid ferrite, and
Lower phase transition temperature is it is also ensured that uniformly tiny acicular ferrite is precipitated so that welding seam toughness is good, is that one kind can be with
Promote austenite content and improves the element of weld metal toughness；
Manganese deoxidation, desulfurization in the welding process, heat release simultaneously accelerate reaction speed, improve the intensity and hardness of weld seam.
Ferrosilicon deoxidation in the welding process can exclude the oxygen in weld seam in weld seam, increase intensity and hardness, can also carry
The acidproof of Gao Gang, heat resistance and resistivity.
G520 stainless steels and the stainless steel welded preparation methods with metal flux-cored wire of 1Cr12NiW1MoV, specific steps
It is as follows：
Step 1 claims respectively by mass percentage：Ferrosilicon powder 1%~4%, manganese powder 16%~18%, nickel powder 18%~
24%, chromium powder 34%~42%, molybdenum-iron powder 3%~6%, cobalt powder 9%~11%, cerium oxide 1%~2%, remaining is iron powder, with
The sum of upper each component mass percent is 100%；
Step 2 mixes the above-mentioned ferrosilicon powder weighed, manganese powder, nickel powder, chromium powder, molybdenum-iron powder, cobalt powder, cerium oxide and iron powder
Uniformly, it is placed in drying oven, 2~3h is dried at 200~300 DEG C, obtains medicine core powder；
The medicine core powder that step 2 obtains is wrapped in width as 7mm by step 3 by flux-cored wire producing machine, and thickness is
In the mild steel steel band of 0.4mm, the loading of medicine core powder is 20wt%~25wt%, and uses molding machine by mild steel steel band
It is closed, obtains flux-cored wire semi-finished product, with acetone by mild steel steel band wiped clean, then carry out first of drawing procedure, the
2.6mm is in the grinding tool aperture that one of drawing procedure uses；
After step 4, first of drawing procedure, reduces drawing grinding tool aperture and carry out postorder drawing, until flux-cored wire
A diameter of 1.2mm~1.6mm；
After step 5, flux-cored wire drawing, the greasy dirt on flux-cored wire surface is removed with the cotton for being moistened with acetone, is obtained
G520 stainless steels and the stainless steel welded metal flux-cored wires of 1Cr12NiW1MoV, stretched obtained welding wire with wire drawing machine,
It is wrapped on wire reel, packs for use.
Embodiment 1
G520 stainless steels and the stainless steel welded preparation methods with metal flux-cored wire of 1Cr12NiW1MoV, specific steps
It is as follows：
Step 1 claims respectively by mass percentage：Ferrosilicon powder 4%, manganese powder 17%, nickel powder 18%, chromium powder 42%, molybdenum-iron powder
3%, cobalt powder 9%, cerium oxide 2%, remaining is iron powder, and the sum of the above components mass percent is 100%；
Step 2 mixes the above-mentioned ferrosilicon powder weighed, manganese powder, nickel powder, chromium powder, molybdenum-iron powder, cobalt powder, cerium oxide and iron powder
Uniformly, it is placed in drying oven, 2.5h is dried at 220 DEG C, obtain medicine core powder；
Step 3, by width be 7mm, the mild steel steel band that thickness is 0.4mm is placed on the putting on band machine of welding wire molding machine,
Stainless steel belt is rolled into U-type groove by the indent of molding machine, the medicine core powder that step 3 obtains is put into U-type groove, medicine
The filling rate of core powder is controlled in 20wt%, then so that U-type groove is rolled closure with molding machine, is obtained flux-cored wire semi-finished product, is used
Acetone will carry out first of drawing procedure after mild steel steel band wiped clean, the grinding tool aperture that first of drawing procedure uses for
2.6mm；
After step 4, first of drawing procedure, reduces drawing grinding tool aperture and carry out postorder drawing, until flux-cored wire
A diameter of 1.2mm；
After step 5, flux-cored wire drawing, the greasy dirt on flux-cored wire surface is removed with the cotton for being moistened with acetone, is obtained
G520 stainless steels and the stainless steel welded metal flux-cored wires of 1Cr12NiW1MoV, stretched obtained welding wire with wire drawing machine,
It is wrapped on wire reel, packs for use.
With the flux-cored wire obtained by embodiment 1, it is suitable for gas metal-arc welding (GMAW), welding condition is：Electricity
180A, voltage 18V are flowed, protective gas is Ar gases, gas flow rate 15L/min；After tested, the tensile strength of welding point is
865Mpa, yield limit 674Mpa, the contraction percentage of area 49%, ballistic work 58J, performance meet G520 and
The requirement of 1Cr12NiW1MoV stainless steel dissimilars welding.
Embodiment 2
G520 stainless steels and the stainless steel welded preparation methods with metal flux-cored wire of 1Cr12NiW1MoV, specific steps
It is as follows：
Step 1 claims respectively by mass percentage：Ferrosilicon powder 2%, manganese powder 18%, nickel powder 24%, chromium powder 34%, molybdenum-iron powder
6%, cobalt powder 11%, cerium oxide 1%, remaining is iron powder, and the sum of the above components mass percent is 100%；
Step 2 mixes the above-mentioned ferrosilicon powder weighed, manganese powder, nickel powder, chromium powder, molybdenum-iron powder, cobalt powder, cerium oxide and iron powder
Uniformly, it is placed in drying oven, 2h is dried at 200 DEG C, obtains medicine core powder；
Step 3, by width be 7mm, the mild steel steel band that thickness is 0.4mm is placed on the putting on band machine of welding wire molding machine,
Stainless steel belt is rolled into U-type groove by the indent of molding machine, the medicine core powder that step 3 obtains is put into U-type groove, medicine
The filling rate of core powder is controlled in 22wt%, then so that U-type groove is rolled closure with molding machine, is obtained flux-cored wire semi-finished product, is used
Acetone will carry out first of drawing procedure after mild steel steel band wiped clean, the grinding tool aperture that first of drawing procedure uses for
2.6mm；
After step 4, first of drawing procedure, reduces drawing grinding tool aperture and carry out postorder drawing, until flux-cored wire
A diameter of 1.4mm；
After step 5, drawing, the greasy dirt on flux-cored wire surface is removed with the cotton for being moistened with acetone, it is stainless to obtain G520
Steel and the stainless steel welded metal flux-cored wires of 1Cr12NiW1MoV, obtained welding wire is stretched, be wrapped in weldering with wire drawing machine
In wire tray, pack for use.
Flux-cored wire made from embodiment 2, is suitable for gas metal-arc welding (GMAW), and welding condition is：Welding electricity
200A, voltage 18V are flowed, protective gas is Ar gases, gas flow rate 15L/min；After tested, the tensile strength of welding point
For 832Mpa, yield limit 674Mpa, the contraction percentage of area 51%, ballistic work 63J, performance meet G520 and
The requirement of 1Cr12NiW1MoV stainless steel dissimilars welding.
Embodiment 3
G520 stainless steels and the stainless steel welded preparation methods with metal flux-cored wire of 1Cr12NiW1MoV, specific steps
It is as follows：
Step 1 claims respectively by mass percentage：Ferrosilicon powder 3%, manganese powder 16%, nickel powder 20%, chromium powder 38%, molybdenum-iron powder
4%, cobalt powder 10%, cerium oxide 1.5%, remaining is iron powder, and the sum of the above components mass percent is 100%；
Step 2 mixes the above-mentioned ferrosilicon powder weighed, manganese powder, nickel powder, chromium powder, molybdenum-iron powder, cobalt powder, cerium oxide and iron powder
Uniformly, it is placed in drying oven, 3h is dried at 300 DEG C, obtains medicine core powder；
Step 3, by width be 7mm, the mild steel steel band that thickness is 0.4mm is placed on the putting on band machine of welding wire molding machine,
Stainless steel belt is rolled into U-type groove by the indent of molding machine, the medicine core powder that step 3 obtains is put into U-type groove, medicine
The filling rate of core powder is controlled in 23wt%, then so that U-type groove is rolled closure with molding machine, is obtained flux-cored wire semi-finished product, is used
Acetone will carry out first of drawing procedure after mild steel steel band wiped clean, the grinding tool aperture that first of drawing procedure uses for
2.6mm；
After step 4, first of drawing procedure, reduces drawing grinding tool aperture and carry out postorder drawing, until flux-cored wire
A diameter of 1.6mm；
After step 5, drawing, the greasy dirt on flux-cored wire surface is removed with the cotton for being moistened with acetone, it is stainless to obtain G520
Steel and the stainless steel welded metal flux-cored wires of 1Cr12NiW1MoV, obtained welding wire is stretched, be wrapped in weldering with wire drawing machine
In wire tray, pack for use.
Flux-cored wire made from embodiment 3, is suitable for gas metal-arc welding (GMAW), and welding condition is：Welding electricity
200A, voltage 20V are flowed, protective gas is Ar gases, gas flow rate 15L/min；After tested, the tensile strength of welding point
For 824Mpa, yield limit 647Mpa, the contraction percentage of area 49%, ballistic work 58J, performance meet G520 and
The requirement of 1Cr12NiW1MoV stainless steel dissimilars welding.
Embodiment 4
G520 stainless steels and the stainless steel welded preparation methods with metal flux-cored wire of 1Cr12NiW1MoV, specific steps
It is as follows：
Step 1 claims respectively by mass percentage：Ferrosilicon powder 1%, manganese powder 18%, nickel powder 21%, chromium powder 40%, molybdenum-iron powder
5%, cobalt powder 9%, cerium oxide 1%, remaining is iron powder, and the sum of the above components mass percent is 100%；
Step 2 mixes the above-mentioned ferrosilicon powder weighed, manganese powder, nickel powder, chromium powder, molybdenum-iron powder, cobalt powder, cerium oxide and iron powder
Uniformly, it is placed in drying oven, 2.2h is dried at 250 DEG C, obtains medicine core powder；
Step 3, by width be 7mm, the mild steel steel band that thickness is 0.4mm is placed on the putting on band machine of welding wire molding machine,
Stainless steel belt is rolled into U-type groove by the indent of molding machine, the medicine core powder that step 3 obtains is put into U-type groove, medicine
The filling rate of core powder is controlled in 24wt%, then so that U-type groove is rolled closure with molding machine, is obtained flux-cored wire semi-finished product, is used
Acetone will carry out first of drawing procedure after mild steel steel band wiped clean, the grinding tool aperture that first of drawing procedure uses for
2.6mm；
After step 4, first of drawing procedure, reduces drawing grinding tool aperture and carry out postorder drawing, until flux-cored wire
A diameter of 1.4mm；
After step 5, drawing, the greasy dirt on flux-cored wire surface is removed with the cotton for being moistened with acetone, it is stainless to obtain G520
Steel and the stainless steel welded metal flux-cored wires of 1Cr12NiW1MoV, obtained welding wire is stretched, be wrapped in weldering with wire drawing machine
In wire tray, pack for use.
Flux-cored wire made from embodiment 4, is suitable for gas metal-arc welding (GMAW), and welding condition is：Welding electricity
210A, voltage 20V are flowed, protective gas is Ar gases, gas flow rate 15L/min；After tested, the tensile strength of welding point
For 874Mpa, yield limit 648Mpa, the contraction percentage of area 51%, ballistic work 70J, performance meet G520 and
The requirement of 1Cr12NiW1MoV stainless steel dissimilars welding.
Embodiment 5
G520 stainless steels and the stainless steel welded preparation methods with metal flux-cored wire of 1Cr12NiW1MoV, specific steps
It is as follows：
Step 1 claims respectively by mass percentage：Ferrosilicon powder 2%, manganese powder 17%, nickel powder 19%, chromium powder 36%, molybdenum-iron powder
6%, cobalt powder 10%, cerium oxide 2%, remaining is iron powder, and the sum of the above components mass percent is 100%；
Step 2 mixes the above-mentioned ferrosilicon powder weighed, manganese powder, nickel powder, chromium powder, molybdenum-iron powder, cobalt powder, cerium oxide and iron powder
Uniformly, it is placed in drying oven, 3h is dried at 250 DEG C, obtains medicine core powder；
Step 3, by width be 7mm, the mild steel steel band that thickness is 0.4mm is placed on the putting on band machine of welding wire molding machine,
Stainless steel belt is rolled into U-type groove by the indent of molding machine, the medicine core powder that step 3 obtains is put into U-type groove, medicine
The filling rate of core powder is controlled in 25wt%, then so that U-type groove is rolled closure with molding machine, is obtained flux-cored wire semi-finished product, is used
Acetone will carry out first of drawing procedure after mild steel steel band wiped clean, the grinding tool aperture that first of drawing procedure uses for
2.6mm；
After step 4, first of drawing procedure, reduces drawing grinding tool aperture and carry out postorder drawing, until flux-cored wire
A diameter of 1.4mm；
After step 5, drawing, the greasy dirt on flux-cored wire surface is removed with the cotton for being moistened with acetone, it is stainless to obtain G520
Steel and the stainless steel welded metal flux-cored wires of 1Cr12NiW1MoV, obtained welding wire is stretched, be wrapped in weldering with wire drawing machine
In wire tray, pack for use.
Flux-cored wire made from embodiment 5, is suitable for gas metal-arc welding (GMAW), and welding condition is：Welding electricity
210A, voltage 21V are flowed, protective gas is Ar gases, gas flow rate 15L/min；After tested, the tensile strength of welding point
For 768Mpa, yield limit 636Mpa, the contraction percentage of area 52%, ballistic work 68J, performance meet G520 and
The requirement of 1Cr12NiW1MoV stainless steel dissimilars welding.
Flux-cored wire welded seam beautiful appearance of the present invention has good welding usability, when can obtain martensite
Stainless steel weld joint tissue is imitated, welding point has excellent mechanical property and corrosion resistance；The face of weld of formation is bright and clean, no gas
Hole without slag inclusion, postwelding without cleaning, can continuous sequence, face of weld is bright and clean, and pore-free can connect without slag inclusion, postwelding without cleaning
Continuous welding；And preparation method is simple, and it is easy to operate, it is suitable for automatic welder, there is higher production efficiency.
Claims (7)
1.G520 stainless steels and the stainless steel welded metal flux-cored wires of 1Cr12NiW1MoV, which is characterized in that including medicine core
With weldering skin, wherein medicine core is composed of the following components by mass percentage：Ferrosilicon powder 1%~4%, manganese powder 16%~18%, nickel powder
18%~24%, chromium powder 34%~42%, molybdenum-iron powder 3%~6%, cobalt powder 9%~11%, cerium oxide 1%~2%, remaining is
Iron powder, the sum of the above components mass percent are 100%.
2. G520 stainless steels according to claim 1 and the stainless steel welded metal flux-cored wires of 1Cr12NiW1MoV,
It is characterized in that, the weldering skin is mild steel steel band, the mass percent of phosphorus is not more than 0.035% in steel band, the quality hundred of sulphur
Divide than being not more than 0.03%.
3. G520 stainless steels according to claim 1 and the stainless steel welded metal flux-cored wires of 1Cr12NiW1MoV,
It is characterized in that, the loading of medicine core powder is 20wt%~25wt% in the flux-cored wire.
4. preparing such as claims 1 to 3 any one of them G520 stainless steels and 1Cr12NiW1MoV being stainless steel welded uses metal
The method of type flux-cored wire, which is characterized in that be as follows：
Step 1 claims respectively by mass percentage：Ferrosilicon powder 1%~4%, manganese powder 16%~18%, nickel powder 18%~24%, chromium
Powder 34%~42%, molybdenum-iron powder 3%~6%, cobalt powder 9%~11%, cerium oxide 1%~2%, remaining is iron powder, the above each group
It is 100% to divide the sum of mass percent；
The above-mentioned ferrosilicon powder weighed, manganese powder, nickel powder, chromium powder, molybdenum-iron powder, cobalt powder, cerium oxide and iron powder are uniformly mixed by step 2,
It is placed in drying oven and dries, obtain medicine core powder；
Step 3, by flux-cored wire producing machine the medicine core powder that step 2 obtains be wrapped in weldering it is intradermal, and using molding machine will
It welds skin to be closed, obtains flux-cored wire semi-finished product, will weld skin wiped clean with acetone, and then carry out first of drawing procedure, first
2.6mm is in the grinding tool aperture that road drawing procedure uses；
After step 4, first of drawing procedure, reduce drawing grinding tool aperture and carry out postorder drawing, until flux-cored wire is straight
Diameter is 1.2mm~1.6mm；
After step 5, flux-cored wire drawing, the greasy dirt on flux-cored wire surface is removed with the cotton for being moistened with acetone, obtains G520
Stainless steel and 1Cr12NiW1MoV is stainless steel welded uses metal flux-cored wire.
5. G520 stainless steels according to claim 4 and 1Cr12NiW1MoV are stainless steel welded with metal flux-cored wire
Preparation method, which is characterized in that drying temperature is 200~300 DEG C in the step 2, and drying time is 2~3h.
6. G520 stainless steels according to claim 4 and 1Cr12NiW1MoV are stainless steel welded with metal flux-cored wire
Preparation method, which is characterized in that weldering skin in the step 3 is mild steel steel band, and the mass percent of phosphorus is not more than in steel band
0.035%, the mass percent of sulphur is not more than 0.03%, and the width of steel band is 7mm, thickness 0.4mm.
7. G520 stainless steels according to claim 4 and 1Cr12NiW1MoV are stainless steel welded with metal flux-cored wire
Preparation method, which is characterized in that the loading of medicine core powder is 20wt%~25wt% in flux-cored wire in the step 3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810218583.3A CN108274143A (en) | 2018-03-16 | 2018-03-16 | G520 stainless steels and the stainless steel welded metal flux-cored wires and preparation method thereof of 1Cr12NiW1MoV |
Applications Claiming Priority (1)
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|---|---|---|---|
| CN201810218583.3A CN108274143A (en) | 2018-03-16 | 2018-03-16 | G520 stainless steels and the stainless steel welded metal flux-cored wires and preparation method thereof of 1Cr12NiW1MoV |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110026708A (en) * | 2019-05-16 | 2019-07-19 | 江苏师范大学 | One kind O containing nano Ce2, Nb welding wire and its application method |
| CN110216398A (en) * | 2019-05-24 | 2019-09-10 | 西安理工大学 | A kind of fan impeller blade gas shielded metal flux-cored wire |
-
2018
- 2018-03-16 CN CN201810218583.3A patent/CN108274143A/en not_active Withdrawn
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110026708A (en) * | 2019-05-16 | 2019-07-19 | 江苏师范大学 | One kind O containing nano Ce2, Nb welding wire and its application method |
| CN110026708B (en) * | 2019-05-16 | 2021-06-11 | 江苏师范大学 | Welding method of dual-phase steel |
| CN110216398A (en) * | 2019-05-24 | 2019-09-10 | 西安理工大学 | A kind of fan impeller blade gas shielded metal flux-cored wire |
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Application publication date: 20180713 |