CN104858567B - A kind of metal core welding wire welded for automobile exhaust pipe - Google Patents
A kind of metal core welding wire welded for automobile exhaust pipe Download PDFInfo
- Publication number
- CN104858567B CN104858567B CN201510149332.0A CN201510149332A CN104858567B CN 104858567 B CN104858567 B CN 104858567B CN 201510149332 A CN201510149332 A CN 201510149332A CN 104858567 B CN104858567 B CN 104858567B
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- China
- Prior art keywords
- welding wire
- metal core
- welding
- automobile exhaust
- core
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Classifications
-
- 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
- B23K35/32—Selection of soldering or welding materials proper with the principal constituent melting at more than 1550 degrees C
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
- B23K35/22—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by the composition or nature of the material
- B23K35/36—Selection of non-metallic compositions, e.g. coatings, fluxes; Selection of soldering or welding materials, conjoint with selection of non-metallic compositions, both selections being of interest
- B23K35/368—Selection of non-metallic compositions of core materials either alone or conjoint with selection of soldering or welding materials
Abstract
The invention discloses a kind of metal core welding wire welded for automobile exhaust pipe, the metal core welding wire is made up of welding wire medicine core and the crust being wrapped on the outside of welding wire medicine core, and each component and shared percentage by weight that the welding wire medicine core includes are as follows：Crome metal 40 70, ferrotianium：15 35, manganese metal：16, ferrosilicon：28, Al Mg alloys：35, arc stabilizer：36, carbide：1‑3.Splashed when this welding wire is welded few, almost without slag, arc stability, appearance of weld is attractive in appearance, it is adaptable to the welding of automobile exhaust system, such as tail pipe, silencer.
Description
Technical field
The present invention relates to welding technique, and in particular to a kind of welding material.
Background technology
Blast pipe is one of automobile important spare part, and to improve automotive service life, requirements at the higher level are proposed to its performance.
Temperature suffered by blast pipe is up to more than 1000 DEG C, and it is also by Clˉ、SO42-, water, CO etc. corrosion, so it is used
Material must possess higher resistance to high temperature oxidation and corrosion resistance.Because ferritic stainless steel has good corrosion resistance
Energy, high temperature oxidation resistance and relatively low cost, are widely used in being vented tube material.
Blast pipe is mainly welded using gas shielded, and solid core welding wire is easily caused coarse grains when welding, and reduces welding and connects
Head anti intercrystalline corrosion and high-temperature oxydation ability.Flux-cored wire is developed rapidly in recent years, in the market it is more be austenite not
Become rusty steel flux-cored wire and two-way stainless flux-cored wire, and suitable for the ferritic stainless steel flux-cored wire of welding of automotive blast pipe
(especially in China) is few.
In addition, the need for used blast pipe welding material can not meet development of automobile at present, blast pipe weldering
Often there is oxidation, seriously corroded in seam, ultimately results in welding seam breaking, influences the service life of automobile.
As can be seen here, develop a kind of flux-cored wire with good resistance to high temperature oxidation and decay resistance be this area urgently
The problem of needing to solve.
The content of the invention
The need for can not meeting development of automobile for existing blast pipe welding material, often there is oxidation, corruption in blast pipe weld seam
Erosion is serious, ultimately results in welding seam breaking, and the problem of influenceing the service life of automobile has it is an object of the invention to provide one kind
Good resistance to high temperature oxidation and decay resistance, the metal core welding wire welded for automobile exhaust pipe.
In order to achieve the above object, the present invention is adopted the following technical scheme that：
A kind of metal core welding wire welded for automobile exhaust pipe, the metal core welding wire is by welding wire medicine core and is wrapped in weldering
Crust on the outside of silk medicine core is constituted, and each component and shared percentage by weight that the welding wire medicine core includes are as follows：
In a preferred approach, the crust of the metal core welding wire uses H08A steel bands, and filling rate is 14%-20%.
Further, the protective gas during metal core welding wire welding is Ar and O2Mixed gas.
The ferritic stainless steel metal core welding wire spatter that the present invention is provided is small, and molten bath is stable, and postwelding is raw almost without slag
Efficiency high is produced, appearance of weld is attractive in appearance, and weld metal has excellent welding technological properties and good high temperature oxidation resistance
Energy and decay resistance, can be applied to the welding of automobile exhaust system, such as tail pipe, silencer well.
Embodiment
In order that the technical means, the inventive features, the objects and the advantages of the present invention are easy to understand, tie below
Instantiation is closed, the present invention is expanded on further.
The ferritic stainless steel metal core welding wire that the present invention program is provided, it is by corresponding crust and is filled in outer intracutaneous
Welding wire medicine core constitute.
In order to reach that it is big that the welding wire medicine core in good resistance to high temperature oxidation and decay resistance, the present invention program includes
Measure deoxidation denitrifier, few slag former and appropriate reinforced alloys element, its metal-cored main component and shared percentage by weight
It is as follows：
In order to further improve the resistance to high temperature oxidation and corrosion among crystalline grains of weld seam, 1-3% carbide alloys are also added into
(mainly molybdenum-iron, ferro-niobium).Surplus is iron powder.
In this welding wire medicine core, chromium plays an important role in ferritic stainless steel, is also the main component in medicinal powder.One
Aspect, Cr and the fine and close Cr of O reaction generations2O3Film, prevents oxygen element to weld seam diffusion inside, is conducive to raising weld seam to resist
High-temperature oxydation ability.On the other hand, the raising of decay resistance is conducive to.But Cr fusing point is higher, excessive chromium can cause weldering
Connect splashing increase.
Manganese metal, ferrosilicon：Deoxidation is mainly played, pollution of the air to molten bath is reduced.Silicomanganese is used in combination, generation
MnO2·SiO2It is more easy to float, is excluded in slag form.The fusing point of other manganese is relatively low, and manganese steam can be formed in high-temperature soldering,
Shroud and completely cut off air around molten bath.
Ferrotianium：On the one hand deoxidation denitrification is played, manganese and silicon is improved to the transition in molten bath, on the other hand plays stabilising arc
Effect.In addition, titanium can also crystal grain thinning, raising welding seam toughness.
Al-Mg alloys：As deoxidation denitrifier, but if adding excessively, AlN can be formed and be mingled with, to improving welding seam toughness
It is unfavorable, therefore percentage by weight shared by Al-Mg alloys is 3-5% in this programme.
Easily there are coarse grains in ferrite stainless structure of steel, to ensure that weld grain is tiny and preferably anti-intergranular is rotten
Some strong carbide alloys, such as molybdenum-iron, ferro-niobium are additionally added in corrosion energy, this programme medicine core.These alloys can react to be formed with carbon
Respective carbide, can be used as forming core core crystal grain thinning.Their addition decreases the combination of chromium and carbon, it is to avoid intergranular
It is chromium depleted, improve weld seam anti intercrystalline corrosion ability.
Based on above-mentioned welding wire medicine core, the present invention program makees crust using H08A mild-carbon steel strips, and filling rate is 14%-
20%, by rolling-closing up-finish draw, finally into Φ 1.2mm ferritic stainless steel metal core welding wire.
The ferritic stainless steel metal core welding wire is in Ar and O2It is mixed gas protected it is lower welded, splash and slag pole
Few, arc stability, appearance of weld is attractive in appearance, and weld metal has good toughness, higher resistance to high temperature oxidation and decay resistance.
With reference to specific embodiment, the present invention program is expanded on further.It should be understood that these embodiments are merely to illustrate this
Invention rather than limitation the scope of the present invention.In addition any method similar or impartial to described content and material can all be answered
For in the present invention.
Specific embodiment such as table 1：
The specific embodiment of table 1
The mechanical property of the ferritic stainless steel metal core welding wire formed in the embodiment above：Tensile strength sigmab≥
450Mpa, elongation A >=15%.
In addition, the welding wire made by the embodiment above is in Ar+O2It is mixed gas protected it is lower welded, welding procedure
Situation such as table 2：
The welding procedure situation of table 2
The welding wire spatter that 3 kinds of examples are provided as can be seen from Table 2 is small, and molten bath is stable, postwelding almost without slag, weld seam into
Type is attractive in appearance, with good welding technological properties.In addition, after being welded using this welding wire, weld seam has good toughness, higher
High temperature oxidation resistance and corrosion resistance.
General principle, principal character and the advantages of the present invention of the present invention has been shown and described above.The technology of the industry
Personnel are it should be appreciated that the present invention is not limited to the above embodiments, and the simply explanation described in above-described embodiment and specification is originally
The principle of invention, without departing from the spirit and scope of the present invention, various changes and modifications of the present invention are possible, these changes
Change and improvement all fall within the protetion scope of the claimed invention.The claimed scope of the invention by appended claims and its
Equivalent thereof.
Claims (1)
1. a kind of metal core welding wire welded for automobile exhaust pipe, the metal core welding wire is by welding wire medicine core and is wrapped in welding wire
Crust on the outside of medicine core is constituted, it is characterised in that each component and shared percentage by weight that the welding wire medicine core includes are as follows：
The crust of the metal core welding wire uses H08A steel bands, and filling rate is 20%；
Protective gas during the metal core welding wire welding is Ar and O2Mixed gas.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510149332.0A CN104858567B (en) | 2015-03-31 | 2015-03-31 | A kind of metal core welding wire welded for automobile exhaust pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510149332.0A CN104858567B (en) | 2015-03-31 | 2015-03-31 | A kind of metal core welding wire welded for automobile exhaust pipe |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104858567A CN104858567A (en) | 2015-08-26 |
| CN104858567B true CN104858567B (en) | 2017-07-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510149332.0A Active CN104858567B (en) | 2015-03-31 | 2015-03-31 | A kind of metal core welding wire welded for automobile exhaust pipe |
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| CN (1) | CN104858567B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108000000A (en) * | 2017-12-25 | 2018-05-08 | 昆山京群焊材科技有限公司 | A kind of ferritic stainless steel metal powder core pattern welding wire |
| CN109848604A (en) * | 2019-03-20 | 2019-06-07 | 南京江联焊接技术有限公司 | A kind of micro- slag gas-shielded flux-cored wire double deoxidizer and preparation method thereof |
| CN114055013B (en) * | 2021-11-26 | 2023-06-27 | 四川大西洋焊接材料股份有限公司 | Welding wire powder core, flux-cored wire and preparation method and application thereof |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1621193A (en) * | 2004-12-23 | 2005-06-01 | 北京工业大学 | High-hardness, wearable, self-protecting metal cored surfacing welding wire |
| EP1547722A1 (en) * | 2003-12-26 | 2005-06-29 | Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.) | Metal-base flux-cored wire for gas-shielded arc welding and gas-shielded arc welding method |
| CN1810438A (en) * | 2006-03-03 | 2006-08-02 | 北京工业大学 | Self-protecting dot and bead welding wire with metal core |
| CN101224527A (en) * | 2008-02-04 | 2008-07-23 | 湘潭大学 | High hardness ferritic stainless steel wearable surfacing flux-cored wire |
| CN101780609A (en) * | 2009-01-15 | 2010-07-21 | 山东聚力焊接材料有限公司 | Slag-free flux-cored wire |
| CN102085605A (en) * | 2009-12-02 | 2011-06-08 | 中冶焊接科技有限公司 | Flux-cored wire used for submerged arc surfacing repair of furnace bed roll |
-
2015
- 2015-03-31 CN CN201510149332.0A patent/CN104858567B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1547722A1 (en) * | 2003-12-26 | 2005-06-29 | Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.) | Metal-base flux-cored wire for gas-shielded arc welding and gas-shielded arc welding method |
| CN1621193A (en) * | 2004-12-23 | 2005-06-01 | 北京工业大学 | High-hardness, wearable, self-protecting metal cored surfacing welding wire |
| CN1810438A (en) * | 2006-03-03 | 2006-08-02 | 北京工业大学 | Self-protecting dot and bead welding wire with metal core |
| CN101224527A (en) * | 2008-02-04 | 2008-07-23 | 湘潭大学 | High hardness ferritic stainless steel wearable surfacing flux-cored wire |
| CN101780609A (en) * | 2009-01-15 | 2010-07-21 | 山东聚力焊接材料有限公司 | Slag-free flux-cored wire |
| CN102085605A (en) * | 2009-12-02 | 2011-06-08 | 中冶焊接科技有限公司 | Flux-cored wire used for submerged arc surfacing repair of furnace bed roll |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104858567A (en) | 2015-08-26 |
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