CN110216398A - A kind of fan impeller blade gas shielded metal flux-cored wire - Google Patents
A kind of fan impeller blade gas shielded metal flux-cored wire Download PDFInfo
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- CN110216398A CN110216398A CN201910443266.6A CN201910443266A CN110216398A CN 110216398 A CN110216398 A CN 110216398A CN 201910443266 A CN201910443266 A CN 201910443266A CN 110216398 A CN110216398 A CN 110216398A
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- powder
- cored wire
- flux
- impeller blade
- fan impeller
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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
- B23K35/3066—Fe as the principal constituent with Ni as next major constituent
Abstract
Fan impeller blade gas-shielded flux-cored wire disclosed by the invention; include following component according to mass percent: ferrosilicon powder is 1%~4%, and manganese powder is 16%~18%, and nickel powder is 21%~26%; chromium powder is 12%~18%; molybdenum-iron powder is 4%~9%, and copper powder is 1%~2%, and ferro-niobium is 2%~3%; aluminium powder is 1%~3%; rare earth powder is 1%~2%, remaining is iron, and the sum of above constituent mass percentage is 100%.The face of weld of flux-cored wire disclosed by the invention welding is bright and clean, pore-free without slag inclusion, postwelding without cleaning, can continuous sequence, face of weld is bright and clean, pore-free without slag inclusion, postwelding without cleaning, can continuous sequence, production efficiency with higher.
Description
Technical field
The invention belongs to materials to process field of welding material, and in particular to a kind of fan impeller blade gas shielded metal mold
Flux-cored wire.
Background technique
In recent years, large fan in China's industry using increasingly extensive, applying working condition also becomes increasingly complex, to improve
The total quality of blower, it is desirable that the good resultant force such as the blade material of blower core part obdurability with higher and hardness
Learn performance.1Cr12NiW1MoV alloy is stainless with a kind of martensite type chromium nickel of the alloying elements multiple strengthening such as W, Mo, V, Nb
Steel, it be 0.1%~0.35%, Mn is that 0.4%~0.6%, Ni is that the chemical component of 1Cr12NiW1MoV stainless steel, which includes: Si,
It is 0.60%~0.90%, W is 1%~1.4% etc. that 0.6%~0.8%, Cr, which are 10.5%~12.5%, Mo,.It is by
What 1Cr13 was developed, compared with same type of material (such as 1Cr11NiW2MoV, 1Cr12Ni2WMoVNb), outstanding advantages are heat
Epistasis is high, resistance to marine corrosion performance is good, has preferable anti-temper resistance and comprehensive mechanical property, is widely used in steam turbine leaf
The manufacturing of the important high temperature-resistant part such as piece, rotor has preferable welding performance and cold and hot working.And G520 stainless steel is
The improvement version stainless steel (0Cr14Ni5MoCuNb) of FV520B stainless steel, G520 stainless steel are in FV520B type martensitic stain less steel
On the basis of a kind of novel precipitation hardening of martensitic stainless steel for developing, there is higher intensity, good welding performance, heat resistance
Energy and corrosion resistance, are the common used materials of natural gas centrifugal compressor impeller.By the way that both steel are welded together, energy
Greatly improve the service life of draught fan impeller.
Currently, about the only a small amount of welding of fan impeller blade G520 and 1Cr12NiW1MoV stainless steel dissimilar Welding Problems
The report of process aspect, there is not yet about its gas shielded fusion welding metal type flux-cored wire to how coping with impeller blade welding structure
The report that part is run for a long time in the complex works environment such as the more stress of big load.
Summary of the invention
The object of the present invention is to provide a kind of fan impeller blade gas shielded metal flux-cored wire, for G520 and
The gas shielded metal flux-cored wire of 1Cr12NiW1MoV stainless steel dissimilar welding, obtains Low Alloy Steel Welds group after welding
It knits, and welding point has excellent mechanical property, suitable for the aeration structures such as fan impeller blade welding.
The technical scheme adopted by the invention is that a kind of fan impeller blade gas shielded metal flux-cored wire, medicine core
The powder medicine core of welding wire includes following component according to mass percent: ferrosilicon powder is 1%~4%, and manganese powder is 16%~18%, nickel
Powder be 21%~26%, chromium powder be 12%~18%, molybdenum-iron powder be 4%~9%, copper powder be 1%~2%, ferro-niobium be 2%~
3%, aluminium powder is 1%~3%, and rare earth powder is 1%~2%, remaining is iron, and the sum of above constituent mass percentage is 100%.
Other features of the invention also reside in,
Filling rate of the powder medicine core in flux-cored wire is 17.8%~22.4%.
Preferably, the granularity of powder medicine core is 80~120 mesh.
Preferably, the weldering skin of flux-cored wire is mild steel steel band, the Zhi amount Bai Fen Bi of P element in the steel band≤
The Zhi amount Bai Fen Bi≤0.03% of 0.035%, S element.
Preferably, the mass percent of Nb is 10%~15% in ferro-niobium powder, remaining is Fe；The matter of Mo in the molybdenum-iron powder
Amount percentage is 55%~60%, C≤0.1%, remaining is Fe；The mass percent of Si is 40-45% in the ferrosilicon powder,
Remaining is Fe.
Preferably, rare earth powder CeO2。
Preferably, the mass percent of each metallic element is as follows after the welding point deposition being prepared: Si is
0.2wt.%~0.4wt.%, Mn are 2.2wt.%~2.7wt.%, and Ni is 5.6wt.%~6.5wt.%, Cr 4.8wt.%
~5.7wt.%, Mo be 0.5wt.%~0.9wt.%, Cu be 0.1wt.%~0.3wt.%, Nb be 0.1wt.%~
0.2wt.%, Al be 0.2wt.%~0.4wt.%, Ce be 0.1wt.%~0.2wt.%, C be 0.046wt.%~
0.071wt.%, P are 0.006wt.%~0.008wt.%, and S is 0.007wt.%~0.009wt.%, N 0.009wt.%
~0.017wt.%, remaining is iron.
The invention has the advantages that a kind of fan impeller blade is with gas shielded metal flux-cored wire with following excellent
Gesture:
(1) appearance of weld that flux-cored wire of the invention welds is beautiful, has good welding usability, can obtain
To martensite aged stainless steel seam organization, welding point has excellent mechanical property and corrosion resistance；
(2) face of weld that flux-cored wire of the invention is formed is bright and clean, and pore-free can connect without slag inclusion, postwelding without cleaning
Continuous welding, face of weld is bright and clean, production efficiency with higher；
(3) flux-cored wire welding point deposited metal tensile strength R of the inventionm≤ 618MPa, room temperature ballistic work Kv≤
48；
(4) addition of the invention by the control and microelement that are matched to elements such as Cr, Ni, Mn, Mo, so that of the invention
The deposited metal composition and microscopic structure of a kind of G520 and 1Cr12NiW1MoV stainless steel base material are provided, so that this welding wire is suitble to
In the welding of fan impeller blade G520 and 1Cr12NiW1MoV stainless steel dissimilar metal.
Detailed description of the invention
Fig. 1 is that welding scene shines in a kind of fan impeller blade gas shielded metal flux-cored wire embodiment of the invention
Piece.
Specific embodiment
The following describes the present invention in detail with reference to the accompanying drawings and specific embodiments.
A kind of fan impeller blade gas shielded metal flux-cored wire of the invention, the powder medicine core of flux-cored wire according to
Mass percent includes following component: ferrosilicon powder is 1%~4%, and manganese powder is 16%~18%, and nickel powder is 21%~26%, chromium
Powder is 12%~18%, and molybdenum-iron powder is 4%~9%, and copper powder is 1%~2%, and ferro-niobium is 2%~3%, and aluminium powder is 1%~3%,
Rare earth powder is 1%~2%, remaining is iron, and the sum of above constituent mass percentage is 100%.
Filling rate of the powder medicine core in flux-cored wire is 17.8%~22.4%.
The granularity of powder medicine core is 80~120 mesh.
The weldering skin of flux-cored wire is mild steel steel band, Zhi amount Bai Fen Bi≤0.035%, S element matter of P element in steel band
Measure Bai Fen Bi≤0.03%.
The mass percent of Nb is 10%~15% in ferro-niobium powder, remaining is Fe；The mass percent of Mo is in molybdenum-iron powder
55%~60%, C≤0.1%, remaining is Fe；The mass percent of Si is 40-45% in ferrosilicon powder, remaining is Fe.
Rare earth powder is CeO2。
The method that fan impeller blade of the invention prepares welding point with gas shielded metal flux-cored wire, use are above-mentioned
Fan impeller blade gas shielded metal flux-cored wire, specific preparation process include the following steps:
Step 1, it matches the medicine core powder of flux-cored wire and is uniformly mixed, medicine core powder includes as follows according to mass percent
Component: ferrosilicon powder is 1%~4%, and manganese powder is 16%~18%, and nickel powder is 21%~26%, and chromium powder is 12%~18%, molybdenum-iron
Powder is 4%~9%, and copper powder is 1%~2%, and ferro-niobium is 2%~3%, and aluminium powder is 1%~3%, and rare earth powder is 1%~2%,
Remaining is iron, and the sum of above constituent mass percentage is 100%；
Step 2, the medicine core powder being uniformly mixed in step 1 is wrapped in mild steel steel band by flux-cored wire producing machine
Drawing welding wire, and be closed mild steel steel band using molding machine, drawing is carried out again with acetone wiped clean, and tube reducing obtains diameter
The flux-cored wire of 1.2mm；
Step 3, welding point, welding condition are prepared using gas metal-arc welding are as follows: voltage 20V~25V, electricity
200A~250A is flowed, dry extension of electrode degree is 15mm~20mm, the CO for the Ar and 80% that protective gas is 20%2Mixed gas,
Gas flow rate is 20L/min.
The mass percent of each metallic element is as follows after the welding point deposition being prepared: Si be 0.2wt.%~
0.4wt.%, Mn be 2.2wt.%~2.7wt.%, Ni be 5.6wt.%~6.5wt.%, Cr be 4.8wt.%~
5.7wt.%, Mo be 0.5wt.%~0.9wt.%, Cu be 0.1wt.%~0.3wt.%, Nb be 0.1wt.%~
0.2wt.%, Al be 0.2wt.%~0.4wt.%, Ce be 0.1wt.%~0.2wt.%, C be 0.046wt.%~
0.071wt.%, P are 0.006wt.%~0.008wt.%, and S is 0.007wt.%~0.009wt.%, N 0.009wt.%
~0.017wt.%, remaining is iron.
A kind of fan impeller blade of the invention is as follows with the effect of each component in gas shielded metal flux-cored wire:
Nickel: for Ni as austenizer, this element, which is added in steel, can make chromium content in austenite phase more
Height, to improve the corrosion resistance of steel.It is essential that the stability for increasing austenite phase, which further changes martensite,
's.In cooling procedure, nickel also mutually reduces martensitic transformation temperature by stable austenite.
Molybdenum: Mo is the α gene elements for promoting ferrite to be formed, it is intended to the stability region for shrinking austenite (γ ring), from
And improve austenite transformation outlet temperature (As).Its effect is to increase the mechanical performance of steel, and the presence of excessive molybdenum can pass through carbon
The formation of compound and lead to precipitation-hardening.
Aluminium: Al element generates effective field trash nucleation mass point, improves weld structure, refines crystal grain
Chromium: promoting the formation and stabilization of ferritic phase, and the chromated oxide of chromium surface is stablized, and keeps the performance of stainless steel.Iron
The formation of ferritic phase is the upper limit value of chromium content, finally ensures that martensite is undergone phase transition.Influence of the chromium to intensity is shown as in right amount
Chromium can improve the obdurability of weld metal.
Ferrosilicon: ferrosilicon deoxidation in the welding process can exclude the oxygen in weld seam in weld seam, increase intensity and hardness, also
The acidproof of steel, heat resistance and resistivity can be improved.
Embodiment 1
Step 1, it matches the medicine core powder of flux-cored wire and is uniformly mixed, medicine core powder includes as follows according to mass percent
Component: ferrosilicon powder 4%, manganese powder 17%, nickel powder 26%, chromium powder 12%, molybdenum-iron powder are 9%, copper powder 3%, ferro-niobium
It is 3%, aluminium powder 3%, CeO2Powder is 2%, iron 21%, and total weight is counted according to 1000 grams；
Step 2, selecting width is 7mm, and the mild-carbon steel strip of thickness 0.3mm is first rolled into U-shaped, matched according to flux-cored wire
It is made into medicinal powder than design, the loading of medicine core powder is 17.8% in welding wire, and is closed mild steel steel band using molding machine,
Drawing, the welding wire that tube reducing is 1.2mm at diameter are carried out again with acetone wiped clean.
Step 3, welding point, welding condition are prepared using gas metal-arc welding are as follows: voltage 24V, electric current
240A, dry extension of electrode degree are 17mm, the CO for the Ar and 80% that protective gas is 20%2Mixed gas, gas flow rate 20L/
min.G520 and 1Cr12NiW1MoV stainless steel dissimilar metal is welded using the welding, weld seam schematic diagram is as shown in Figure 1, from figure
As it can be seen that weld seam is beautiful.
Embodiment 2
Step 1, it matches the medicine core powder of flux-cored wire and is uniformly mixed, medicine core powder includes as follows according to mass percent
Component: ferrosilicon powder 1%, manganese powder 16%, nickel powder 21%, chromium powder 16%, molybdenum-iron powder are 5%, copper powder 2.4%, niobium
Iron is 2%, aluminium powder 1%, CeO2Powder is 1.8%, iron 33.8%, and total weight is counted according to 1000 grams；
Step 2, selecting width is 7mm, and the mild-carbon steel strip of thickness 0.3mm is first rolled into U-shaped, matched according to flux-cored wire
It is made into medicinal powder than design, and the loading of medicine core powder is 21% in welding wire, and mild steel steel band is closed using molding machine, is used
Acetone wiped clean carries out drawing, the welding wire that tube reducing is 1.2mm at diameter again.
Step 3, welding point, welding condition are prepared using gas metal-arc welding are as follows: voltage 20V, electric current
200A, dry extension of electrode degree are 20mm, the CO for the Ar and 80% that protective gas is 20%2Mixed gas, gas flow rate 20L/
min。
Embodiment 3
Step 1, it matches the medicine core powder of flux-cored wire and is uniformly mixed, medicine core powder includes as follows according to mass percent
Component: ferrosilicon powder 2.8%, manganese powder 18%, nickel powder 24%, chromium powder 18%, molybdenum-iron powder are 4%, copper powder 1%, niobium
Iron is 2.2%, aluminium powder 1.5%, CeO2Powder is 1%, iron 27.5%, and total weight is counted according to 1000 grams；
Step 2, selecting width is 7mm, and the mild-carbon steel strip of thickness 0.3mm is first rolled into U-shaped, matched according to flux-cored wire
It is made into medicinal powder than design, and the loading of medicine core powder is 18% in welding wire, and mild steel steel band is closed using molding machine, is used
Acetone wiped clean carries out drawing, the welding wire that tube reducing is 1.2mm at diameter again.
Step 3, welding point, welding condition are prepared using gas metal-arc welding are as follows: voltage 20V, electric current
200A, dry extension of electrode degree are 15mm, the CO for the Ar and 80% that protective gas is 20%2Mixed gas, gas flow rate 20L/
min。
Embodiment 4
Step 1, it matches the medicine core powder of flux-cored wire and is uniformly mixed, medicine core powder includes as follows according to mass percent
Component: ferrosilicon powder 3%, manganese powder 16%, nickel powder 22%, chromium powder 13%, molybdenum-iron powder are 8%, copper powder 2%, ferro-niobium
It is 3%, aluminium powder 1%, CeO2Powder is 2%, iron 30%, and total weight is counted according to 1000 grams；
Step 2, selecting width is 7mm, and the mild-carbon steel strip of thickness 0.3mm is first rolled into U-shaped, matched according to flux-cored wire
It is made into medicinal powder than design, and the loading of medicine core powder is 20% in welding wire, and mild steel steel band is closed using molding machine, is used
Acetone wiped clean carries out drawing, the welding wire that tube reducing is 1.2mm at diameter again.
Step 3, welding point, welding condition are prepared using gas metal-arc welding are as follows: voltage 24V, electric current
250A, dry extension of electrode degree are 17mm, the CO for the Ar and 80% that protective gas is 20%2Mixed gas, gas flow rate 20L/
min。
Embodiment 5
Step 1, it matches the medicine core powder of flux-cored wire and is uniformly mixed, medicine core powder includes as follows according to mass percent
Component: ferrosilicon powder 1%, manganese powder 17%, nickel powder 26%, chromium powder 17%, molybdenum-iron powder are 3%, copper powder 1%, ferro-niobium
It is 2.5%, aluminium powder 2%, CeO2Powder is 1.5%, iron 29%, and total weight is counted according to 1000 grams；
Step 2, selecting width is 7mm, and the mild-carbon steel strip of thickness 0.3mm is first rolled into U-shaped, matched according to flux-cored wire
It is made into medicinal powder than design, the loading of medicine core powder is 22.4% in welding wire, and is closed mild steel steel band using molding machine,
Drawing, the welding wire that tube reducing is 1.2mm at diameter are carried out again with acetone wiped clean.
Step 3, welding point, welding condition are prepared using gas metal-arc welding are as follows: voltage 24V, electric current
250A, dry extension of electrode degree are 17mm, the CO for the Ar and 80% that protective gas is 20%2Mixed gas, gas flow rate 20L/
min。
The chemical component for comparing metal after the welding point deposition that above-mentioned five embodiments are prepared is as shown in table 1:
The Metal Mechanic Property of flux-cored wire deposition in above-described embodiment is tested, as shown in table 2:
In conclusion gas shielded metal flux-cored wire of the invention, welding usability is good, arc stability, penetration power are strong,
Operation is easy, and appearance of weld is beautiful, it is small to splash, and has preferably impact flexibility.Meanwhile suitable transition alloy elements, guarantee
Weld metal has excellent intensity, plasticity and higher low-temperature impact toughness.
The chemical component (unit: the percentage of quality) of welding point deposited metal in 1 embodiment 1-5 of table
Flux-cored wire deposited metal mechanical property in 2 embodiment 1-5 of table
Claims (7)
1. a kind of fan impeller blade gas shielded metal flux-cored wire, which is characterized in that the powder medicine core of flux-cored wire is pressed
Include following component according to mass percent: ferrosilicon powder is 1%~4%, and manganese powder is 16%~18%, and nickel powder is 21%~26%,
Chromium powder be 12%~18%, molybdenum-iron powder be 4%~9%, copper powder be 1%~2%, ferro-niobium be 2%~3%, aluminium powder be 1%~
3%, rare earth powder is 1%~2%, remaining is iron, and the sum of above constituent mass percentage is 100%.
2. a kind of fan impeller blade gas shielded metal flux-cored wire as described in claim 1, which is characterized in that described
Filling rate of the powder medicine core in flux-cored wire is 17.8%~22.4%.
3. a kind of fan impeller blade gas shielded metal flux-cored wire as claimed in claim 2, which is characterized in that described
The granularity of powder medicine core is 80~120 mesh.
4. a kind of fan impeller blade gas shielded metal flux-cored wire as described in claim 1, which is characterized in that described
The weldering skin of flux-cored wire is mild steel steel band, Zhi amount Bai Fen Bi≤0.035%, S element quality hundred of P element in the steel band
Fen Bi≤0.03%.
5. a kind of fan impeller blade gas shielded metal flux-cored wire as described in claim 1, which is characterized in that described
The mass percent of Nb is 10%~15% in ferro-niobium powder, remaining is Fe；The mass percent of Mo is 55% in the molybdenum-iron powder
~60%, C≤0.1%, remaining is Fe；The mass percent of Si is 40-45% in the ferrosilicon powder, remaining is Fe.
6. a kind of fan impeller blade gas shielded metal flux-cored wire as described in claim 1, which is characterized in that described
Rare earth powder is CeO2。
7. a kind of fan impeller blade as described in claim 1 is connect with the welding that gas shielded metal flux-cored wire is prepared
Head, which is characterized in that the mass percent of each metallic element is as follows after welding point deposition: Si be 0.2wt.%~
0.4wt.%, Mn be 2.2wt.%~2.7wt.%, Ni be 5.6wt.%~6.5wt.%, Cr be 4.8wt.%~
5.7wt.%, Mo be 0.5wt.%~0.9wt.%, Cu be 0.1wt.%~0.3wt.%, Nb be 0.1wt.%~
0.2wt.%, Al be 0.2wt.%~0.4wt.%, Ce be 0.1wt.%~0.2wt.%, C be 0.046wt.%~
0.071wt.%, P are 0.006wt.%~0.008wt.%, and S is 0.007wt.%~0.009wt.%, N 0.009wt.%
~0.017wt.%, remaining is iron.
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| CN201910443266.6A CN110216398A (en) | 2019-05-24 | 2019-05-24 | A kind of fan impeller blade gas shielded metal flux-cored wire |
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ID=67818377
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| CN114260615A (en) * | 2021-12-28 | 2022-04-01 | 西安热工研究院有限公司 | Welding wire for welding T91-TP304H dissimilar materials and preparation method thereof |
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Application publication date: 20190910 |