CN106513943B - A kind of metal powder-cored wire high-efficiency welding method - Google Patents
A kind of metal powder-cored wire high-efficiency welding method Download PDFInfo
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- CN106513943B CN106513943B CN201611144535.1A CN201611144535A CN106513943B CN 106513943 B CN106513943 B CN 106513943B CN 201611144535 A CN201611144535 A CN 201611144535A CN 106513943 B CN106513943 B CN 106513943B
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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
- B23K9/00—Arc welding or cutting
- B23K9/16—Arc welding or cutting making use of shielding gas
- B23K9/173—Arc welding or cutting making use of shielding gas and of a consumable electrode
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
- B23K35/22—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by the composition or nature of the material
- B23K35/24—Selection of soldering or welding materials proper
- B23K35/30—Selection of soldering or welding materials proper with the principal constituent melting at less than 1550 degrees C
- B23K35/3053—Fe as the principal constituent
- B23K35/3073—Fe as the principal constituent with Mn as next major constituent
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K9/00—Arc welding or cutting
- B23K9/235—Preliminary treatment
Abstract
The present invention relates to a kind of metal powder-cored wire high-efficiency welding method, welding method is as follows：（1）Welding workpiece joint is subjected to mechanical processing and does U-shaped groove processing, radian processing is then done into U-shaped groove side,（2）Surface treatment,（3）Preheating,（4）Assembly is fixed,（5）Under rich argon-mixed protection, arc welding at welding workpiece is processed using metal powder-cored wire, metal-powder-core medicine core is made of the rigid welding wire crust coated metal powder core of strip, and the rigid welding wire crust of strip contains Si; Mn, P, Sr, Ga; Ni, metal-powder-core contain Ti, SiO2, Al2O3, MgO, F, Fe2O3, MnO2, S, P, B；Flux-cored wire toughness of the present invention, plasticity are good, are easy to preserve, and melt that deposited speed is fast, and wearability, crack resistance are good, and wire feed is convenient, is conducive to improve welding processing efficiency and quality.
Description
Technical field
The present invention relates to a kind of metal powder-cored wire high-efficiency welding methods, belong to welding processing technical field.
Background technology
In the manufacture of the steel members such as tubular pole, Transmission Towers involved in power transmitting device, essentially it is related to
The welding of metal works, welding are also referred to as welding, Rong and connect, be a kind of jointing metal in a manner of heating, high temperature or high pressure or
The manufacturing process and technology of other thermoplastic materials such as plastics.Flux-cored wire is also referred to as flux cored wire, can be by adjusting medicinal powder
Alloying component type and ratio, easily design various different purposes (it is wear-resisting, it is high-strength, it is heat-resisting, it is anti-corrosion, it is low temperature resistant
Deng) welding material because the alloying component of the medicine core of flux-cored wire can carry out flexible and convenient adjustment as needed, medicine
Many kinds of core welding wire, which are solid welding wires, can not smelt and roll.Flux-cored wire has highlighted the advantageous spy of many welding methods
Property, it is adaptable to the welding of various steel, there is the characteristics of gas-shielded metal-arc welding and submerged-arc welding again in production efficiency.So
And still deposit medicine core toughness in welding wire welding process and plasticity is poor, it is slow to melt deposited speed, in wire feed compared with solid welding wire difficulty, welding wire
The phenomenon that outer surface is easy corrosion, the pulvis easy moisture absorption, to limit welding processing efficiency and quality.
Invention content
The purpose of the present invention is in view of the drawbacks of the prior art, provide a kind of metal powder-cored wire efficient welding side
Method, flux-cored wire toughness, plasticity are good, are easy to preserve, and it is fast to melt deposited speed, and wire feed is convenient, be conducive to improve welding processing efficiency and
Quality.
The present invention is achieved by the following technical solutions：
A kind of metal powder-cored wire high-efficiency welding method, welding method are as follows：
（1）Welding workpiece joint is subjected to mechanical processing and does U-shaped groove processing, radian is then done into U-shaped groove side
Processing, and ensure that surface roughness is more than Ra3.6, connector fitting surface flatness and verticality are less than 0.15mm；
（2）Welding workpiece tape edge portion is surface-treated, removal surface and oil contaminant, oxidation film and fifth wheel；
（3）It will be preheated at welding workpiece U-shaped groove, preheating temperature is not less than 120 ~ 160 DEG C, and removal face of weld is attached
The ice crystal or moisture；
（4）Welding workpiece is assembled, and ensures that the fit-up gap of joint is less than 0.18mm, unfitness of butt joint is less than
0.4mm, and fixed joint point with welding fixture；
（5）Under rich argon-mixed protection, arc welding at welding workpiece is processed using metal powder-cored wire, bottoming
Layer uses interior silk filling method, is successively welded using outer silk filling method after prime coat welding, and it is 220 ~ 330 DEG C to control interlayer temperature, institute
Metal-powder-core medicine core is stated to be made of Thin Strip Steel welding wire crust coated metal powder core；
The Thin Strip Steel welding wire crust contains Si：0.2 ~ 0.3 mass %, Mn：2 ~ 2.6 mass %, P：0.01 ~ 0.05 mass %,
Sr：0.1 ~ 0.2 mass %, Ga：1.3 ~ 1.5 mass %, Ni：0.03 ~ 0.1 mass %；
The metal-powder-core contains Ti：3 ~ 4 mass %, SiO2：2 ~ 5 mass %, Al2O3：4 ~ 6 mass %, MgO：3 ~ 8 mass %,
F：8 ~ 12 mass %, Fe2O3：5 ~ 6 mass %, MnO2：1 ~ 2 mass %, S：0.004 ~ 0.006 mass %, P：0.01 ~ 0.03 mass %,
B：0.004 ~ 0.008 mass %；
（6）Welding workpiece weld seam back is carried out to repair weldering processing, polishing is cleaned at U-shaped groove.
A kind of above-mentioned metal powder-cored wire high-efficiency welding method, wherein arc side corresponding central angle when radian processing
It is 20 ~ 35 °.
A kind of above-mentioned metal powder-cored wire high-efficiency welding method, wherein step（3）Heat range is U-shaped groove
In 80 ~ 120mm.
Above-mentioned a kind of metal powder-cored wire high-efficiency welding method, wherein the richness is argon-mixed by argon gas and dioxy
Change carbon by volume 8:3.
A kind of above-mentioned metal powder-cored wire high-efficiency welding method, wherein step（5）Welding wire in arc welding process
Elongation is 12 ~ 16mm, and rich argon-mixed flow is 25 ~ 30L/min, and speed of welding is 250 ~ 300mm/min, and arc voltage is
26 ~ 32V, welding current are 340 ~ 380A.
Above-mentioned a kind of metal powder-cored wire high-efficiency welding method, wherein the metal powder-cored wire section is straight
Diameter is 1.3 ~ 1.5mm.
Beneficial effects of the present invention are：
The present invention does radian processing using U-shaped groove side and forms soldering opening, and groove is relatively narrow, is conducive to reduce welding layer road drop
Low production cost, and using the metal powder-cored wire being newly formulated, be made of Thin Strip Steel welding wire crust coated metal powder core, electricity
Current density is big, burn-off rate is fast, and metal powder type is low compared with nonmetallic mineral powder fusing point, and melting capacity is low, and it is fast to melt deposited speed, is not added with
Fluoride, solves the big defect of fluoride flue dust, and deoxidation products is easy to form protective film, Mn, P, Sr, Ga, Ni in weld pool surface
Equal metals are easy to the Dispersed precipitate in welding metal, improve the wearability of alloy, the molten bath of silicon can improve the flowing of liquid metal
Property, it is easy to appearance of weld, each element ratio is suitable, makes welding wire almost without big spatter, and layer hardness is high, and impact is tough
Property it is good, wearability, crack resistance are good, reduce protective gas cost, to conducive to improving welding machine efficiency and quality.
Description of the drawings
Fig. 1 is plumb joint schematic diagram of the present invention.
（In figure, welding workpiece 1, U-shaped groove 2）.
Specific implementation mode
The specific implementation mode of the present invention is described further with reference to the accompanying drawings and examples.
Embodiment 1
A kind of metal powder-cored wire high-efficiency welding method, welding method are as follows：
（1）Welding workpiece joint is subjected to mechanical processing and does U-shaped groove processing, radian is then done into U-shaped groove side
Processing, the corresponding central angle a of arc side is 25 ° and ensures that surface roughness is more than Ra3.6 when radian is handled, and connector assembles facial plane
Degree and verticality are 0.1mm；
（2）Welding workpiece tape edge portion is surface-treated, removal surface and oil contaminant, oxidation film and fifth wheel；
（3）It will be preheated at welding workpiece U-shaped groove, heat range is in the 130mm of U-shaped groove, and preheating temperature is not
Less than 150 DEG C, the ice crystal or moisture of removal face of weld attachment；
（4）Welding workpiece is assembled, and ensures the fit-up gap of joint as 0.15mm, unfitness of butt joint 0.3mm, and
Joint point is fixed with welding fixture；
（5）Under rich argon-mixed protection, the richness is argon-mixed by argon gas and carbon dioxide by volume 8:3, it uses
Metal powder-cored wire processes arc welding at welding workpiece, and welding wire elongation is 14mm, rich argon in arc welding process
Mixed gas flow is 26L/min, speed of welding 270mm/min, arc voltage 30V, welding current 350A, and prime coat is adopted
It with interior silk filling method, is successively welded using outer silk filling method after prime coat welding, and it is 280 DEG C to control interlayer temperature；
The metal powder-cored wire diameter of section is metal-powder-core medicine core described in 1.4mm by suitcase outside Thin Strip Steel welding wire
Wrap up in metal-powder-core composition；
The Thin Strip Steel welding wire crust contains Si：0.25 mass %, Mn：2.3 mass %, P：0.03 mass %, Sr：0.1 matter
Measure %, Ga：1.5 mass %, Ni：0.5 mass %；
The metal-powder-core contains Ti：3.5 mass %, SiO2：4 mass %, Al2O3：5 mass %, MgO：4 amount %, F：11 amount %,
Fe2O3：5 mass %, MnO2：2 mass %, S：0.005 mass %, P：0.025 mass %, B：0.006 mass %；
（6）Welding workpiece weld seam back is carried out to repair weldering processing, polishing is cleaned at U-shaped groove.
Embodiment 2
A kind of metal powder-cored wire high-efficiency welding method, welding method are as follows：
（1）Welding workpiece joint is subjected to mechanical processing and does U-shaped groove processing, radian is then done into U-shaped groove side
Processing, the corresponding central angle a of arc side is 32 ° and ensures that surface roughness is more than Ra3.6 when radian is handled, and connector assembles facial plane
Degree and verticality are 0.13mm；
（2）Welding workpiece tape edge portion is surface-treated, removal surface and oil contaminant, oxidation film and fifth wheel；
（3）It will be preheated at welding workpiece U-shaped groove, heat range is in the 90mm of U-shaped groove, and preheating temperature is
140 DEG C, the ice crystal or moisture of removal face of weld attachment；
（4）Welding workpiece is assembled, and ensures the fit-up gap of joint as 0.12mm, unfitness of butt joint 0.2mm, and
Joint point is fixed with welding fixture；
（5）Under rich argon-mixed protection, the richness is argon-mixed by argon gas and carbon dioxide by volume 8:3, it uses
Metal powder-cored wire processes arc welding at welding workpiece, and welding wire elongation is 15mm, rich argon in arc welding process
Mixed gas flow is 27L/min, speed of welding 260mm/min, arc voltage 28V, welding current 350A, and prime coat is adopted
It with interior silk filling method, is successively welded using outer silk filling method after prime coat welding, and it is 310 DEG C to control interlayer temperature；
The metal powder-cored wire diameter of section is metal-powder-core medicine core described in 1.3mm by suitcase outside Thin Strip Steel welding wire
Wrap up in metal-powder-core composition；
The Thin Strip Steel welding wire crust contains Si：0.2 mass %, Mn：2.4 mass %, P：0.04 mass %, Sr：0.18 matter
Measure %, Ga：1.3 quality %, Ni：0.09 mass %；
The metal-powder-core contains Ti：4 mass %, SiO2：2 mass %, Al2O3：4.2 mass %, MgO：6.7 amount %, F：8.1
Measure %, Fe2O3：5.8 mass %, MnO2：1.6 mass %, S：0.004 mass %, P：0.02 mass %, B：0.005 mass %；
（6）Welding workpiece weld seam back is carried out to repair weldering processing, polishing is cleaned at U-shaped groove.
Embodiment 3
A kind of metal powder-cored wire high-efficiency welding method, welding method are as follows：
（1）Welding workpiece joint is subjected to mechanical processing and does U-shaped groove processing, radian is then done into U-shaped groove side
Processing, the corresponding central angle a of arc side is 24 ° and ensures that surface roughness is more than Ra3.6 when radian is handled, and connector assembles facial plane
Degree and verticality are 0.13mm；
（2）Welding workpiece tape edge portion is surface-treated, removal surface and oil contaminant, oxidation film and fifth wheel；
（3）It will be preheated at welding workpiece U-shaped groove, heat range is in the 90mm of U-shaped groove, and preheating temperature is
145 DEG C, the ice crystal or moisture of removal face of weld attachment；
（4）Welding workpiece is assembled, and ensures the fit-up gap of joint as 0.11mm, unfitness of butt joint 0.3mm, and
Joint point is fixed with welding fixture；
（5）Under rich argon-mixed protection, the richness is argon-mixed by argon gas and carbon dioxide by volume 8:3, it uses
Metal powder-cored wire processes arc welding at welding workpiece, and welding wire elongation is 13mm, rich argon in arc welding process
Mixed gas flow is 26L/min, speed of welding 290mm/min, arc voltage 27V, welding current 360A, and prime coat is adopted
It with interior silk filling method, is successively welded using outer silk filling method after prime coat welding, and it is 310 DEG C to control interlayer temperature；
The metal powder-cored wire diameter of section is metal-powder-core medicine core described in 1.5mm by suitcase outside Thin Strip Steel welding wire
Wrap up in metal-powder-core composition；
The Thin Strip Steel welding wire crust contains Si：0.3 mass %, Mn：2.4 mass %, P：0.03 mass %, Sr：0.14 matter
Measure %, Ga：1.5 mass %, Ni：0.07 mass %；
The metal-powder-core contains Ti：3.6 mass %, SiO2：3.1 mass %, Al2O3：5.2 mass %, MgO：6.4 amount %, F：
9.7 measuring %, Fe2O3：5.3 mass %, MnO2：1.6 mass %, S：0.005 mass %, P：0.02 mass %, B：0.005 mass %；
（6）Welding workpiece weld seam back is carried out to repair weldering processing, polishing is cleaned at U-shaped groove.
Welding product made from embodiment 1-3 is subjected to quality testing, testing result is as follows：
| Number | Yield strength | Tensile strength | Low temperature impact energy（J） | Elongation percentage（%） | It does not merge | It is lack of penetration | Stomata | Slag inclusion |
| Embodiment 1 | 416 | 528 | 320 | 25 | It has no | It has no | It has no | It has no |
| Embodiment 2 | 410 | 512 | 312 | 21 | It has no | It has no | It has no | It has no |
| Embodiment 3 | 408 | 530 | 315 | 24 | It has no | It has no | It has no | It has no |
It can be seen that high by layer hardness made from this technique, impact flexibility is good, and wearability, cracking resistance shape are good, reduce guarantor
Gas cost is protected, to conducive to raising welding machine efficiency and quality.
The foregoing is only a preferred embodiment of the present invention, but scope of protection of the present invention is not limited thereto,
Any one skilled in the art in the technical scope disclosed by the present invention, the change or replacement that can be readily occurred in,
Should all it cover within the scope of the present invention.Therefore, protection scope of the present invention should be with the protection domain of claims
Subject to.
Claims (6)
1. a kind of metal powder-cored wire high-efficiency welding method, it is characterized in that, welding method is as follows：
（1）Welding workpiece joint is subjected to mechanical processing and does U-shaped groove processing, radian processing is then done into U-shaped groove side,
And ensureing that surface roughness is more than Ra3.6, connector fitting surface flatness and verticality are less than 0.15mm；
（2）Welding workpiece tape edge portion is surface-treated, removal surface and oil contaminant, oxidation film and fifth wheel；
（3）It will be preheated at welding workpiece U-shaped groove, preheating temperature is not less than 120 ~ 160 DEG C, removal face of weld attachment
Ice crystal or moisture；
（4）Welding workpiece to be assembled, and ensures that the fit-up gap of joint is less than 0.18mm, unfitness of butt joint is less than 0.4mm, and
Joint point is fixed with welding fixture；
（5）Under rich argon-mixed protection, arc welding at welding workpiece is processed using metal powder-cored wire, prime coat is adopted
It with interior silk filling method, is successively welded using outer silk filling method after prime coat welding, and it is 220 ~ 330 DEG C to control interlayer temperature, the gold
Belong to powder core medicine core to be made of Thin Strip Steel welding wire crust coated metal powder core；
The Thin Strip Steel welding wire crust contains Si：0.2 ~ 0.3 mass %, Mn：2 ~ 2.6 mass %, P：0.01 ~ 0.05 mass %, Sr：
0.1 ~ 0.2 mass %, Ga：1.3 ~ 1.5 mass %, Ni：0.03 ~ 0.1 mass %；
The metal-powder-core contains Ti：3 ~ 4 mass %, SiO2：2 ~ 5 mass %, Al2O3：4 ~ 6 mass %, MgO：3 ~ 8 mass %, F：8~
12 mass %, Fe2O3：5 ~ 6 mass %, MnO2：1 ~ 2 mass %, S：0.004 ~ 0.006 mass %, P：0.01 ~ 0.03 mass %, B：
0.004 ~ 0.008 mass %；
（6）Welding workpiece weld seam back is carried out to repair weldering processing, polishing is cleaned at U-shaped groove.
2. a kind of metal powder-cored wire high-efficiency welding method as described in claim 1, it is characterized in that, arc when radian is handled
The corresponding central angle in side is 20 ~ 35 °.
3. a kind of metal powder-cored wire high-efficiency welding method as described in claim 1, it is characterized in that, step（3）Preheating
In ranging from 80 ~ 120mm of U-shaped groove.
4. a kind of metal powder-cored wire high-efficiency welding method as described in claim 1, it is characterized in that, the richness argon mixing
Gas is by argon gas and carbon dioxide by volume 8:3.
5. a kind of metal powder-cored wire high-efficiency welding method as described in claim 1, it is characterized in that, step（5）Electric arc
It is 12 ~ 16mm to weld welding wire elongation in process, and rich argon-mixed flow is 25 ~ 30L/min, speed of welding is 250 ~
300mm/min, arc voltage are 26 ~ 32V, and welding current is 340 ~ 380A.
6. a kind of metal powder-cored wire high-efficiency welding method as described in claim 1, it is characterized in that, the metal-powder-core
Flux-cored wire diameter of section is 1.3 ~ 1.5mm.
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| CN107262964A (en) * | 2017-05-12 | 2017-10-20 | 天长市通联焊业有限公司 | A kind of high-toughness wear-resistant flux-cored wire |
| CN108098171A (en) * | 2017-11-27 | 2018-06-01 | 江苏振光电力设备制造有限公司 | A kind of efficient welding method |
| CN114769946B (en) * | 2022-04-21 | 2024-04-16 | 潍坊昌成耐磨材料有限公司 | Surface treatment method for flux-cored wire |
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| JP2008194724A (en) * | 2007-02-13 | 2008-08-28 | Nippon Steel & Sumikin Welding Co Ltd | Flux cored wire for gas-shielded arc welding, and welding method of galvanized steel sheet and stainless steel sheet |
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