CN112872653A - Stainless steel flux-cored wire without gas protection and preparation method thereof - Google Patents
Stainless steel flux-cored wire without gas protection and preparation method thereof Download PDFInfo
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- CN112872653A CN112872653A CN202110156912.8A CN202110156912A CN112872653A CN 112872653 A CN112872653 A CN 112872653A CN 202110156912 A CN202110156912 A CN 202110156912A CN 112872653 A CN112872653 A CN 112872653A
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- flux
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- gas
- cored wire
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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
- B23K35/02—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
- B23K35/40—Making wire or rods for soldering or welding
- B23K35/406—Filled tubular wire or rods
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Nonmetallic Welding Materials (AREA)
Abstract
The invention discloses a stainless steel flux-cored wire without gas protection and a preparation method thereof, relates to the technical field of welding, and aims to solve the problems that the existing flux-cored wire needs to be externally connected with a protective gas, is inconvenient to use and has poor welding performance, and the technical scheme is as follows: the welding flux comprises a welding flux and a stainless steel sheath wrapped outside the welding flux, wherein the welding flux comprises the following components in parts by weight: 10-40% of rutile, 20-35% of chromium metal, 3-10% of manganese metal, 10-15% of nickel powder, 3-10% of ferrosilicon, 2-20% of marble, 3-10% of arc stabilizer, 10-30% of anti-air-hole agent and the balance of iron powder, wherein the filling rate of the welding flux is 18-20%. The invention does not need to provide any gas as a protective agent, has good welding process performance, little welding slag splashing and smooth welding bead surface.
Description
Technical Field
The invention relates to the technical field of welding, in particular to a stainless steel flux-cored wire without gas protection and a preparation method thereof.
Background
At present, stainless steel flux-cored wires in the market are welded by adopting gas protection basically. When welding operation is carried out, gas shield is additionally provided as a protective agent, which brings great inconvenience under limited conditions, particularly in field operation, and although corresponding welding rods can be adopted, the efficiency and the loss of the welding rods are far greater than those of flux-cored wires.
At present, some self-protection flux-cored wires exist in the market, the flux-cored wires are basically carbon steel, the formula system basically adopts the formula system of a welding rod, a large amount of aluminum powder, fluorite and other fluorides are added into the core wire, the welding process is far inferior to that of the gas shielded flux-cored wires, the forming appearance is poor, the splashing is large, and the slag removal is difficult.
Therefore, a new solution is needed to solve this problem.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide the stainless steel flux-cored wire without gas protection, no gas is required to be provided as a protective agent, the welding process performance is good, the splashing is small, and the surface of a welding bead is flat and smooth.
The technical purpose of the invention is realized by the following technical scheme: the stainless steel flux-cored wire without gas protection comprises a welding agent and a stainless steel sheath wrapped outside the welding agent, wherein the welding agent comprises the following components in parts by weight: 10-40% of rutile, 20-35% of chromium metal, 3-10% of manganese metal, 10-15% of nickel powder, 3-10% of ferrosilicon, 2-20% of marble, 3-10% of arc stabilizer, 10-30% of anti-porosity agent and the balance of iron powder, wherein the filling rate of the welding flux is 18-20%.
By adopting the technical scheme, no gas is required to be provided as a protective agent during welding operation, the welding process performance can achieve the effect of gas protection, the splashing is small, the slag coverage is completely uniform and is easy to fall off, the surface of a welding bead is flat and smooth, and no welding defects such as air holes exist.
The invention is further configured to: the stainless steel outer skin is made of a 304L stainless steel belt.
By adopting the technical scheme, the 304L stainless steel has excellent grain boundary corrosion resistance after welding or stress relief, and can maintain good corrosion resistance under the condition of not carrying out heat treatment, so that the welding strength of the welding wire can be improved.
The invention is further configured to: the stainless steel strip has a gauge of 0.4 x 10 mm.
The invention is further configured to: the pore-resisting agent is prepared by uniformly mixing various fluorides and silicates and then smelting at high temperature.
By adopting the technical scheme, the generation of air holes during welding can be prevented.
The invention is further configured to: a stainless steel flux-cored wire without gas protection and a preparation method thereof comprise the following steps:
the method comprises the following steps: mixing and stirring, namely weighing the flux core formulas such as rutile according to the proportion of each component, and stirring in a stirrer to uniformly mix the components and form a welding flux;
step two: coating welding flux on a stainless steel strip, placing the stainless steel strip in a strip placing machine, enabling the stainless steel strip to enter a forming machine through a conduction band, meanwhile, conveying the welding flux into the stainless steel strip by powder conveying equipment, and controlling the powder filling rate to be 18% -20%;
step three: drawing process, rolling and drawing the stainless steel band wrapped with the flux core into a flux-cored wire with the diameter of 1.0mm or 1.2mm
In conclusion, the invention has the following beneficial effects: the invention adopts 304L stainless steel strip as the crust, after welding or stress relieving, the grain boundary corrosion resistance is excellent, under the condition of no heat treatment, the good corrosion resistance can be kept, the tensile strength of the surfacing metal is enhanced, meanwhile, the slag forming effect can be realized through the arrangement of rutile, the arc stabilizing effect is also realized, the arrangement of chromium and nickel powder can be used for adding chromium and nickel metal elements to the welding seam, and the arrangement of manganese and silicon iron can be mainly used for silicon-manganese combined deoxidation except for supplementing manganese and silicon elements to the welding seam, the arrangement of marble not only can realize slag forming, but also can realize gas forming, and CO is generated by decomposing marble2The gas protects the welding seam, generates short slag to facilitate directional welding, plays a role in preventing air from invading the welding seam, and also plays a role in arc stabilization and desulfurization, the arc stabilizer is provided with low ionization substances, so that the arc can be stably combusted in the welding process, the splashing of the welding slag is reduced, and the anti-porosity agent is prepared from various fluorides, silicates and the like according to a certain proportionThe stainless steel flux-cored wire is prepared by high-temperature smelting after being uniformly mixed, and has the main function of preventing the generation of air holes during welding, so that the stainless steel flux-cored wire is protected by adopting a protection mode of taking slag protection as a main part, taking built-in micro gas protection as an auxiliary part and combining multiple metals for deoxidation so as to avoid the production of air holes during welding, a self-protection special welding machine is not needed during welding operation, a general gas-shielded welding machine is used without being connected with a gas source, and the stainless steel flux-cored wire is convenient and practical.
Drawings
FIG. 1 is a process flow diagram of the preparation method of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The first embodiment is as follows:
a stainless steel flux-cored wire without gas protection comprises a welding flux and a stainless steel sheath wrapped outside a flux core, wherein the welding flux comprises the following components in parts by weight: 10-40% of rutile, 20-35% of chromium metal, 3-10% of manganese metal, 10-15% of nickel powder, 3-10% of ferrosilicon, 2-20% of marble, 3-10% of arc stabilizer, 10-30% of anti-air-hole agent and the balance of iron powder, wherein the filling rate of the flux core is 18-20%. During welding operation, no gas is needed to be provided as a protective agent, the welding process performance can achieve the effect of gas protection, splashing is small, slag is completely and uniformly covered and is easy to fall off, the surface of a welding bead is flat and smooth, and welding defects such as air holes are avoided.
In addition, the stainless steel sheath is made of a 304L stainless steel strip, the 304L stainless steel has excellent grain boundary corrosion resistance after welding or stress relief, and good corrosion resistance can be kept even if heat treatment is not carried out, so that the welding strength of the welding wire can be improved.
On the basis of the above, the specification of the stainless steel strip is 0.4 x 10 mm.
In addition to the above, in the present embodiment, it is preferable that the total amount of rutile is 1000g, chromium metal is 1050g, manganese metal is 250g, nickel powder is 700g, ferrosilicon is 250g, marble is 200g, arc stabilizer is 250g, pore inhibitor is 900g, and iron powder is 400g, and the total amount of the flux core is 5000 g.
On the basis, the pore-resisting agent is prepared by uniformly mixing a plurality of fluorides and silicates and then smelting at high temperature, and pores can be prevented from being generated during welding by the arrangement of the pore-resisting agent.
As shown in fig. 1, a stainless steel flux-cored wire without gas protection and a preparation method thereof comprise the following steps:
the method comprises the following steps: mixing and stirring, namely weighing the flux core formulas such as rutile according to the proportion of each component, and stirring in a stirrer to uniformly mix the components and form a welding flux;
step two: coating welding flux on a stainless steel strip, placing the stainless steel strip in a strip placing machine, enabling the stainless steel strip to enter a forming machine through a conduction band, meanwhile, conveying the welding flux into the stainless steel strip by powder conveying equipment, and controlling the powder filling rate to be 18% -20%;
step three: drawing process, rolling and drawing the stainless steel band wrapped with the flux core into a flux-cored wire with the diameter of 1.0mm or 1.2mm
Example two: the stainless steel flux-cored wire without gas protection is different from the first embodiment in that: in this embodiment, it is preferable that the total amount of the flux core is 5000g, including 1050g of rutile, 1050g of chromium metal, 200g of manganese metal, 700g of nickel powder, 250g of ferrosilicon, 200g of marble, 250g of arc stabilizer, 900g of pore inhibitor and 400g of iron powder.
Example three: the stainless steel flux-cored wire without gas protection is different from the first embodiment in that: in this embodiment, 1000g of rutile, 1100g of chromium metal, 250g of manganese metal, 700g of nickel powder, 250g of ferrosilicon, 150g of marble, 250g of arc stabilizer, 900g of anti-porosity agent and 400g of iron powder are preferred, and the total amount of the flux core is 5000 g.
The fourth embodiment is a stainless steel flux-cored wire without gas protection, which is different from the first embodiment in that: in this embodiment, it is preferable that the total amount of rutile is 1000g, chromium metal is 1050g, manganese metal is 250g, nickel powder is 700g, ferrosilicon is 200g, marble is 150g, arc stabilizer is 250g, pore inhibitor is 1000g, and iron powder is 400g, and the total amount of the flux core is 5000 g.
Example five: the stainless steel flux-cored wire without gas protection is different from the first embodiment in that: in this embodiment, it is preferable that the total amount of the flux core is 5000g, including 1050g of rutile, 1050g of chromium metal, 250g of manganese metal, 600g of nickel powder, 300g of ferrosilicon, 200g of marble, 250g of arc stabilizer, 900g of pore inhibitor and 400g of iron powder.
In practical use, in the first embodiment, the best welding effect can be achieved, the invention adopts a 304L stainless steel strip as a sheath, after welding or stress relief, the grain boundary corrosion resistance is excellent, good corrosion resistance can be kept under the condition of no heat treatment, the tensile strength of surfacing metal is enhanced, meanwhile, the rutile can play a role in slagging and arc stabilization, the chromium and nickel powder can be used for supplementing manganese and silicon elements to a welding seam, and the manganese and silicon iron can be used for supplementing manganese and silicon elements to the welding seam and carrying out combined deoxidation and marble can not only carry out slagging but also carry out gas generation, and the marble generates CO through decomposition2The gas is used for protecting the welding seam, short slag is generated to facilitate directional welding, the function of preventing air from invading the welding seam is achieved, the functions of arc stabilization and desulfurization are achieved, the arc stabilizer contains low ionization substances, electric arc can be stably combusted in the welding process, splashing of welding slag is reduced, the anti-gas-hole agent is formed by uniformly mixing various fluorides, silicates and the like according to a certain proportion and then smelting at high temperature, the main function of the anti-gas-hole agent is to prevent gas holes from being generated in the welding process, therefore, the stainless steel flux-cored welding wire disclosed by the invention is mainly protected by molten slag, is assisted by built-in micro gas protection, is protected by a protection mode of combined deoxidation of various metals, is free from producing the gas holes in the welding process, does not need to adopt a self-protection special welding machine in the welding operation, is achieved by using a general gas-protection welding machine without connecting a gas source, and is easy to remove.
The above description is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments, and all technical solutions belonging to the idea of the present invention belong to the protection scope of the present invention. It should be noted that modifications and embellishments within the scope of the invention may occur to those skilled in the art without departing from the principle of the invention, and are considered to be within the scope of the invention.
Claims (5)
1. The utility model provides a need not stainless steel flux cored wire of gas shield which characterized in that: the welding flux comprises a welding flux and a stainless steel outer skin wrapped outside the welding flux, wherein the welding flux comprises the following components in parts by weight: 10-40% of rutile, 20-35% of chromium metal, 3-10% of manganese metal, 10-15% of nickel powder, 3-10% of ferrosilicon, 2-20% of marble, 3-10% of arc stabilizer, 10-30% of anti-porosity agent and the balance of iron powder, wherein the filling rate of the welding flux is 18-20%.
2. The stainless steel flux-cored welding wire without gas shielding of claim 1, wherein: the stainless steel outer skin is made of a 304L stainless steel belt.
3. The stainless steel flux-cored welding wire without gas shielding of claim 2, wherein: the stainless steel strip has a gauge of 0.4 x 10 mm.
4. The stainless steel flux-cored welding wire without gas shielding of claim 1, wherein: the pore-resisting agent is prepared by uniformly mixing various fluorides and silicates and then smelting at high temperature.
5. A stainless steel flux-cored wire without gas protection and a preparation method thereof are characterized in that: the method comprises the following steps:
the method comprises the following steps: mixing and stirring, namely weighing the flux core formulas such as rutile according to the proportion of each component, and stirring in a stirrer to uniformly mix the components and form a welding flux;
step two: coating welding flux on a stainless steel strip, placing the stainless steel strip in a strip placing machine, enabling the stainless steel strip to enter a forming machine through a conduction band, meanwhile, conveying the welding flux into the stainless steel strip by powder conveying equipment, and controlling the powder filling rate to be 18% -20%;
step three: and (3) a drawing process, namely rolling and drawing the stainless steel strip wrapped with the welding flux into a flux-cored wire with the diameter of 1.0mm or 1.2 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110156912.8A CN112872653A (en) | 2021-02-04 | 2021-02-04 | Stainless steel flux-cored wire without gas protection and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110156912.8A CN112872653A (en) | 2021-02-04 | 2021-02-04 | Stainless steel flux-cored wire without gas protection and preparation method thereof |
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| CN112872653A true CN112872653A (en) | 2021-06-01 |
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| CN202110156912.8A Pending CN112872653A (en) | 2021-02-04 | 2021-02-04 | Stainless steel flux-cored wire without gas protection and preparation method thereof |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2004138389A (en) * | 2004-12-27 | 2006-06-10 | Государственное образовательное учреждение высшего профессионального образовани "Кубанский государственный технологический университет" (ГОУВПО "КубГТУ") (RU) | SELF-PROTECTED POWDER WIRE FOR WELDING OF Austenitic Chrome-Nickel Steels |
| CN103737192A (en) * | 2014-01-06 | 2014-04-23 | 四川大西洋焊接材料股份有限公司 | Soldering flux for submerged arc horizontal position welding of steel containment, preparation method and welding method |
| CN104148824A (en) * | 2014-09-01 | 2014-11-19 | 四川大西洋焊接材料股份有限公司 | High-tenacity flux-cored wire for electro-gas welding |
| CN106181127A (en) * | 2016-08-24 | 2016-12-07 | 天津大桥金属焊丝有限公司 | Argon filling self-shield argon tungsten-arc welding flux-cored wire is exempted from the stainless steel pipes back side |
| CN106695155A (en) * | 2016-12-14 | 2017-05-24 | 安徽华众焊业有限公司 | Low-hydrogen high toughness acidic flux-cored wire |
| CN108000001A (en) * | 2018-01-24 | 2018-05-08 | 江苏孚尔姆焊业股份有限公司 | New type stainless steel. corrosion resistance flux-cored wire |
-
2021
- 2021-02-04 CN CN202110156912.8A patent/CN112872653A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2004138389A (en) * | 2004-12-27 | 2006-06-10 | Государственное образовательное учреждение высшего профессионального образовани "Кубанский государственный технологический университет" (ГОУВПО "КубГТУ") (RU) | SELF-PROTECTED POWDER WIRE FOR WELDING OF Austenitic Chrome-Nickel Steels |
| CN103737192A (en) * | 2014-01-06 | 2014-04-23 | 四川大西洋焊接材料股份有限公司 | Soldering flux for submerged arc horizontal position welding of steel containment, preparation method and welding method |
| CN104148824A (en) * | 2014-09-01 | 2014-11-19 | 四川大西洋焊接材料股份有限公司 | High-tenacity flux-cored wire for electro-gas welding |
| CN106181127A (en) * | 2016-08-24 | 2016-12-07 | 天津大桥金属焊丝有限公司 | Argon filling self-shield argon tungsten-arc welding flux-cored wire is exempted from the stainless steel pipes back side |
| CN106695155A (en) * | 2016-12-14 | 2017-05-24 | 安徽华众焊业有限公司 | Low-hydrogen high toughness acidic flux-cored wire |
| CN108000001A (en) * | 2018-01-24 | 2018-05-08 | 江苏孚尔姆焊业股份有限公司 | New type stainless steel. corrosion resistance flux-cored wire |
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