CN104858567A - Metal cored welding wire for welding of automobile exhaust pipe - Google Patents
Metal cored welding wire for welding of automobile exhaust pipe Download PDFInfo
- Publication number
- CN104858567A CN104858567A CN201510149332.0A CN201510149332A CN104858567A CN 104858567 A CN104858567 A CN 104858567A CN 201510149332 A CN201510149332 A CN 201510149332A CN 104858567 A CN104858567 A CN 104858567A
- Authority
- CN
- China
- Prior art keywords
- welding wire
- welding
- automobile exhaust
- exhaust pipe
- metal core
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
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 metal cored welding wire for welding of an automobile exhaust pipe. The welding wire comprises a welding wire flux core and an outer sheath wrapping the outer side of the welding wire flux core; the welding wire flux core comprises the following components in percentage by weight: 40-70% of chrome metal, 15-35% of ferrotitanium, 1-6% of manganese metal, 2-8% of ferrosilicon, 3-5% of Al-Mg alloy, 3-6% of an arc stabilizer and 1-3% of carbides. During welding, the welding wire is very low in splash, few in residue, stable in arc, and suitable for welding of a tail pipe, a silencer and the like used in an automobile exhaust system; through adoption of the welding wire, a formed welding seam is attractive.
Description
Technical field
The present invention relates to solder technology, be specifically related to a kind of welding material.
Background technology
Blast pipe is one of automobile important spare part, for improving automotive service life, proposes requirements at the higher level to its performance.Temperature suffered by blast pipe is up to more than 1000 DEG C, and it is also by Cl
--, SO4
2-, water, CO etc. corrosion, so its material used must possess higher resistance to high temperature oxidation and corrosion resistance.Because ferritic stainless steel has good decay resistance, high temperature oxidation resistance and lower cost, be widely used in blast pipe material.
Blast pipe mainly adopts gas shielded to weld, and easily causes coarse grains, reduce welding point anti intercrystalline corrosion and high-temperature oxydation ability during solid core welding wire welding.Flux-cored wire develop rapidly in recent years, more is austenitic stainless steel flux-cored wire and two-way stainless flux-cored wire in the market, and the ferritic stainless steel flux-cored wire (especially at China) being applicable to welding of automotive blast pipe is few.
In addition, current used blast pipe welding material can not meet the needs of development of automobile, and oxidation, seriously corroded often appear in blast pipe weld seam, finally cause welding seam breaking, affect the service life of automobile.
As can be seen here, developing a kind of flux-cored wire with good resistance to high temperature oxidation and decay resistance is that this area needs the problem that will solve badly.
Summary of the invention
The needs of development of automobile cannot be met for existing blast pipe welding material, often there is oxidation, seriously corroded in blast pipe weld seam, finally cause welding seam breaking, affect the problem in the service life of automobile, the object of the present invention is to provide and a kind of there is good resistance to high temperature oxidation and decay resistance, for the metal core welding wire of automobile exhaust pipe welding.
In order to achieve the above object, the present invention adopts following technical scheme:
For automobile exhaust pipe welding a metal core welding wire, this metal core welding wire is made up of welding wire medicine core and the crust be wrapped in outside welding wire medicine core, each component that described welding wire medicine core comprises and shared percentage by weight as follows:
In a preferred approach, the crust of described metal core welding wire adopts H08A steel band, and filling rate is 14%-20%.
Further, protective gas during described metal core welding wire welding is Ar and O
2mist.
Ferritic stainless steel metal core welding wire spatter provided by the invention is little, molten bath is stablized, postwelding is almost without slag, production efficiency is high, appearance of weld is attractive in appearance, and weld metal has excellent welding technological properties and good high temperature oxidation resistance and decay resistance, well can be applicable to the welding of automobile exhaust system, as tail pipe, silencer etc.
Detailed description of the invention
The technological means realized to make the present invention, creation characteristic, reaching object and effect is easy to understand, below in conjunction with instantiation, setting forth the present invention further.
The ferritic stainless steel metal core welding wire that the present invention program provides, it is made up of corresponding crust and the welding wire medicine core that is filled in outer intracutaneous.
In order to reach good resistance to high temperature oxidation and decay resistance, the welding wire medicine core in the present invention program comprises a large amount of deoxidation denitrifier, few slag former and appropriate reinforced alloys element, its metal-cored main component and shared percentage by weight as follows:
In order to improve resistance to high temperature oxidation and the corrosion among crystalline grains of weld seam further, also add 1-3% carbide alloy (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.On the one hand, Cr and O reaction generates fine and close Cr
2o
3film, prevents oxygen element to weld seam diffusion inside, is conducive to improving weld seam oxidation-resistance property.On the other hand, the raising of decay resistance is conducive to.But the fusing point of Cr is higher, too much chromium can cause spatter to increase.
Manganese metal, ferrosilicon: mainly play deoxidation, reduce air to the pollution in molten bath.Silicomanganese conbined usage, the MnO of generation
2siO
2more easily float, get rid of with slag form.The fusing point of manganese is lower in addition, can form manganese steam when high-temperature soldering, shrouds isolated air around molten bath.
Ferrotianium: play deoxidation denitrification on the one hand, raising manganese and silicon, to the transition in molten bath, play the effect of stabilising arc on the other hand.In addition, titanium also can crystal grain thinning, improves welding seam toughness.
Al-Mg alloy: as deoxidation denitrifier, if but add too much, AlN can be formed and be mingled with, unfavorable to raising welding seam toughness, therefore in this programme, percentage by weight shared by Al-Mg alloy is 3-5%.
Easily there is coarse grains in ferrite stainless structure of steel, for guarantee weld grain is tiny and good anti intercrystalline corrosion performance, also adds some strong carbide alloys, as molybdenum-iron, ferro-niobium in this programme medicine core.These alloys can react with carbon and form respective carbide, can be used as forming core core crystal grain thinning.They add the combination decreasing chromium and carbon, avoid the poor chromium of intergranular, improve weld seam anti intercrystalline corrosion ability.
Based on above-mentioned welding wire medicine core, the present invention program adopts H08A mild-carbon steel strip to make crust, and filling rate is 14%-20%, through rolling-close up-finish draw, final become the ferritic stainless steel metal core welding wire of Φ 1.2mm.
This ferritic stainless steel metal core welding wire is at Ar and O
2mixed gas protected under weld, splash and slag seldom, arc stability, appearance of weld is attractive in appearance, and weld metal has good toughness, higher resistance to high temperature oxidation and decay resistance.
Below in conjunction with specific embodiment, set forth the present invention program further.Should be understood that these embodiments are only not used in for illustration of the present invention to limit the scope of the invention.In addition any method similar or impartial to described content and material all can be applicable in the present invention.
Specific embodiments is as table 1:
Table 1 specific embodiments
The mechanical property of the ferritic stainless steel metal core welding wire formed in above-mentioned embodiment: tensile strength sigma
b>=450Mpa, percentage elongation A>=15%.
In addition, the welding wire made by above-mentioned embodiment is at Ar+O
2mixed gas protected under weld, welding procedure situation is as table 2:
Table 2 welding procedure situation
The welding wire spatter that theres is provided of 3 kinds of examples is little as can be seen from Table 2, and molten bath is stablized, and postwelding is almost without slag, and appearance of weld is attractive in appearance, has good welding technological properties.In addition, after using this welding wire to weld, weld seam has good toughness, higher high temperature oxidation resistance and corrosion resistance.
More than show and describe general principle of the present invention, principal character and advantage of the present invention.The technical staff of the industry should understand; the present invention is not restricted to the described embodiments; what describe in above-described embodiment and description just illustrates principle of the present invention; without departing from the spirit and scope of the present invention; the present invention also has various changes and modifications, and these changes and improvements all fall in the claimed scope of the invention.Application claims protection domain is defined by appending claims and equivalent thereof.
Claims (3)
1. for automobile exhaust pipe welding a metal core welding wire, this metal core welding wire is made up of welding wire medicine core and the crust be wrapped in outside welding wire medicine core, it is characterized in that, each component that described welding wire medicine core comprises and shared percentage by weight as follows:
2. a kind of metal core welding wire for automobile exhaust pipe welding according to claim 1, is characterized in that, the crust of described metal core welding wire adopts H08A steel band, and filling rate is 14%-20%.
3. a kind of metal core welding wire for automobile exhaust pipe welding according to claim 1 and 2, is characterized in that, protective gas during described metal core welding wire welding is Ar and O
2mist.
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 true CN104858567A (en) | 2015-08-26 |
| CN104858567B CN104858567B (en) | 2017-07-25 |
Family
ID=53904966
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 |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104858567B (en) |
Cited By (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 |
| CN114055013A (en) * | 2021-11-26 | 2022-02-18 | 四川大西洋焊接材料股份有限公司 | Flux-cored wire, 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 |
Cited By (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 |
| CN114055013A (en) * | 2021-11-26 | 2022-02-18 | 四川大西洋焊接材料股份有限公司 | Flux-cored wire, flux-cored wire and preparation method and application thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104858567B (en) | 2017-07-25 |
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