CN104588907A - Stainless steel open arc flux-cored wire for transition layer overlaying - Google Patents
Stainless steel open arc flux-cored wire for transition layer overlaying Download PDFInfo
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- CN104588907A CN104588907A CN201410748796.9A CN201410748796A CN104588907A CN 104588907 A CN104588907 A CN 104588907A CN 201410748796 A CN201410748796 A CN 201410748796A CN 104588907 A CN104588907 A CN 104588907A
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- 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
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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
- B23K35/32—Selection of soldering or welding materials proper with the principal constituent melting at more than 1550 degrees C
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Nonmetallic Welding Materials (AREA)
Abstract
The invention discloses a stainless steel open arc flux-cored wire for transition layer overlaying. The stainless steel open arc flux-cored wire comprises a welding wire outer skin of a low-carbon cold-rolled steel strip and a flux core. According to the formula, flux core powder comprises, by weight, 35%-50% of chromium metal, 1%-6% of low silicon iron, 5%-15% of electrolytic manganese, 12%-25% of metallic nickel, 5%-20% of rutile, 5%-15% of aluminum magnesium alloy and 8%-18% of fluorite. The chromium content of the chromium metal is not smaller than 99%. The manganese content of the electrolytic manganese is not smaller than 99%. The silicon content of the low silicon iron is 40%-46%. The nickel content of the metallic nickel is not smaller than 99%. The titanium content of the rutile is larger than 95%, and the calcium fluoride content of the fluorite is not smaller than 95%. The particle size of the flux cover powder is smaller than 60 meshes. According to the flux-cored wire, during welding, flux and protecting gas are not added at all, and overlaying can be carried out directly. Base metal is diluted, and arc stability is good. Welding joint with-residue protection is achieved, and high ductility and toughness are achieved.
Description
Technical field
The present invention relates to the transition zone built-up welding stainless steel open arc flux-cored wire that crust metal is carbon steel, particularly during the built-up welding of carbon equivalent high metal surface, do a kind of stainless steel open arc flux-cored wire that transition zone uses.
Background technology
When carrying out the large special wear resistant parts Bead weld repair such as roll, mill, grinding roller, because mother metal itself is mostly medium high carbon alloy steel, solderability is poor, and welding process easily occurs crackle, and overlay cladding thickness is restricted greatly, peeling off, falling the phenomenons such as block easily appears in use procedure.The service life of large special wear resistant parts and number of times are reduced greatly.
Summary of the invention
Technical problem to be solved by this invention is, provides a kind of transition zone built-up welding stainless steel open arc flux-cored wire, has self-shield characteristic; directly can weld and not need solder flux and gas shield; can open arc welding, can indirect observation molten bath and weld seam, conveniently regulate welding procedure.
In order to solve the problems of the technologies described above, the technical solution used in the present invention is: a kind of transition zone built-up welding stainless steel open arc flux-cored wire, comprise welding wire crust and the medicine core of low-carbon cold rolling steel band, according to mass percent, described medicine core medicinal powder formula is: crome metal 35 ~ 50%, low-silicon iron 1 ~ 6%, electrolytic manganese 5 ~ 15%, metallic nickel 12 ~ 25%, rutile 5 ~ 20%, almag 5 ~ 15%, fluorite 8 ~ 18%.
The chromium content of described crome metal is not less than 99%, and the Fe content of electrolytic manganese is not less than 99%, and the silicone content of low-silicon iron is 40 ~ 46%, and the nickel content of metallic nickel is not less than 99%, and the Ti content of rutile is greater than 95%, and the Calcium Fluoride Content of fluorite is not less than 95%.
Described medicine core medicinal powder granularity is less than 60 orders.
The invention has the beneficial effects as follows: do not add any solder flux during welding and protective gas just directly can carry out built-up welding.Dilution mother metal, arc stability is good.Weld seam has flux shielding, has higher plasticity and toughness.
Detailed description of the invention
Below in conjunction with detailed description of the invention, the present invention is described in further detail:
Transition zone built-up welding stainless steel open arc flux-cored wire of the present invention, the appearance strip material of flux-cored wire adopts high-quality low-carbon cold rolling steel band, the mass fraction of medicine core consists of: crome metal 35 ~ 50%, low-silicon iron 1 ~ 6%, electrolytic manganese 5 ~ 15%, metallic nickel 12 ~ 25%, rutile 5 ~ 20%, almag 5 ~ 15%, fluorite 8 ~ 18%.
Flux-cored wire of the present invention adopts general conventional manufacturing process in industry to prepare, in order to realize best combination property, medicinal powder raw material are preferred: the chromium content of crome metal is more than or equal to 99%, the Fe content of electrolytic manganese is more than or equal to 99%, the silicone content of low-silicon iron is 40 ~ 46%, and the nickel content of metallic nickel is more than or equal to 99%, and the Ti content of rutile is greater than 95%, the Calcium Fluoride Content of fluorite is more than or equal to 95%, and various raw material all cross 60 mesh sieves.
The use mechanism of transition zone flux-cored wire of the present invention:
Some large special wear resistant parts, as roll, grinding roller, mill etc. mostly adopt the monoblock cast of medium high carbon alloy steel to form, certain hour rear surface is used to there will be fatigue crack, fall the defects such as block, need to carry out Bead weld repair, and bead welding wire also all mostly adopts high alloy system, due to the middle and high carbon alloy system of mother metal during built-up welding, the overall carbon equivalent of mother metal is higher, cause mother metal solderability poor, easily occur segmentation crack as surface during roll repair welding, cause Bead weld repair failure; And although grinding roller, mill allow to occur some segmentation cracks, the resistance to impact of heap postwelding entirety reduces greatly, and peeling off, falling the defects such as block very easily appears in use procedure.And stainless overall plasticity and toughness are higher, adopt open arc stainless flux-cored wire to carry out one deck or which floor transition built-up welding, can matrix constituent be diluted, reduce carbon equivalent, when reducing roll overlaying, occur the probability of crackle; The shock resistance of deposited metal can be improved by composition transition, greatly reduce peeling off in grinding roller, mill use procedure, fall block phenomenon.
In order to understand the present invention, further illustrate the present invention below in conjunction with embodiment, but do not limit the present invention.
Embodiment 1 ~ 4 prepares transition zone built-up welding stainless steel open arc flux-cored wire of the present invention
The crust metal of welding wire adopts low-carbon cold rolling steel band, and width is 14mm, and thickness is 0.30mm; Its chemical composition is as shown in table 1.
Table 1, low-carbon cold rolling steel band chemical composition (mass fraction)
| C | Mn | Si | S | P |
| ≤0.05 | 0.18-0.26 | ≤0.10 | ≤0.03 | ≤0.03 |
Each raw meal is got by table 2, mix, what load flux-cored wire forming machine adds in powder device, is progressively rolled into U-shaped steel band and evenly adds medicinal powder, carry out lap seal through rolling again, to be become by welding wire draw diameter to be the flux-cored wire of 2.4 ~ 2.8 millimeters through wire drawing machine.
Table 2, transition zone built-up welding stainless steel open arc flux-cored wire medicinal powder mass fraction formula (%)
Experimental example 1 ~ 4
With the flux-cored wire prepared by embodiment of the present invention 1-4, adopt the welding machine of flat characteristic power supply directly to carry out built-up welding welding, welding current selects 400A, voltage 30V, and test plate (panel) is common low carbon steel plate, is of a size of 200X100X20mm.For preventing the dilution of base metals Resistance of Weld Metal, overlay cladding thickness is greater than 12 millimeters.
Table 3 embodiment 1-4 transition zone built-up welding stainless steel open arc flux-cored wire
Deposited metal composition (mass fraction)
| C | Mn | Si | S | P | Cr | Ni | All the other | |
| Implement 1 | 0.03 | 5.80 | 0.72 | 0.010 | 0.013 | 18.20 | 9.25 | Fe |
| Implement 2 | 0.03 | 5.52 | 0.65 | 0.010 | 0.013 | 19.02 | 9.16 | Fe |
| Implement 3 | 0.03 | 5.20 | 1.02 | 0.010 | 0.012 | 19.25 | 9.05 | Fe |
| Implement 4 | 0.03 | 5.30 | 0.68 | 0.010 | 0.012 | 18.82 | 8.60 | Fe |
Chemical composition analysis result carried out to the flux-cored wire prepared by embodiment of the present invention 1-4 as shown in table 3.Found out by table 2 and table 3, in embodiment of the present invention 1-4, embodiment 2 slag covering property, slag fissility, resistance to pore and welded pass visual shape are all excellent, and weld seam plasticity and toughness are better, and peeling off, falling the defects such as block not easily appears in actual weld deposit process.On the contrary, because crome metal is lower outside the scope of the invention in embodiment 1, so crome metal mass fraction is low in table 3, because low-silicon iron is higher outside the scope of the invention in embodiment 3, in table 3, the mass fraction of silicon is high, all cause weld seam plasticity and toughness to decline, peeling off, falling the defects such as block easily appears in actual welding process, and shaping poor.In embodiment 4, fluorite content is bigger than normal, causes welding process to splash comparatively large, welding process is not easily carried out.
The flux-cored wire of high-plasticity of the present invention carries out transition zone reparation to wearing piece mother metal, dilutes matrix constituent, improves the plasticity and toughness of deposited metal, has stopped the appearance of crackle in weld deposit process, greatly reduces in use procedure to peel off, fall block phenomenon.Substantially increase the service life of large special wear resistant parts.
Above-described embodiment is only for illustration of technological thought of the present invention and feature, its object is to enable those skilled in the art understand content of the present invention and implement according to this, only can not limit the scope of the claims of the present invention with the present embodiment, namely the equal change done of all disclosed spirit or modification, still drop in the scope of the claims of the present invention.
Claims (3)
1. a transition zone built-up welding stainless steel open arc flux-cored wire, comprise welding wire crust and the medicine core of low-carbon cold rolling steel band, it is characterized in that, according to mass percent, described medicine core medicinal powder formula is: crome metal 35 ~ 50%, low-silicon iron 1 ~ 6%, electrolytic manganese 5 ~ 15%, metallic nickel 12 ~ 25%, rutile 5 ~ 20%, almag 5 ~ 15%, fluorite 8 ~ 18%.
2. transition zone built-up welding stainless steel open arc flux-cored wire according to claim 1, it is characterized in that, the chromium content of described crome metal is not less than 99%, the Fe content of electrolytic manganese is not less than 99%, the silicone content of low-silicon iron is 40 ~ 46%, the nickel content of metallic nickel is not less than 99%, and the Ti content of rutile is greater than 95%, and the Calcium Fluoride Content of fluorite is not less than 95%.
3. transition zone built-up welding stainless steel open arc flux-cored wire according to claim 1 and 2, is characterized in that, described medicine core medicinal powder granularity is less than 60 orders.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410748796.9A CN104588907B (en) | 2014-12-09 | 2014-12-09 | A kind of transition zone built-up welding rustless steel open arc flux-cored wire |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410748796.9A CN104588907B (en) | 2014-12-09 | 2014-12-09 | A kind of transition zone built-up welding rustless steel open arc flux-cored wire |
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| CN104588907A true CN104588907A (en) | 2015-05-06 |
| CN104588907B CN104588907B (en) | 2016-06-22 |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104923935A (en) * | 2015-06-29 | 2015-09-23 | 山东钢铁股份有限公司 | Method for welding large-thickness slabs having high alloy content |
| CN109226995A (en) * | 2018-10-31 | 2019-01-18 | 首钢集团有限公司 | A kind of self-shield flux-cored welding wire for overlaying welding |
| CN110039253A (en) * | 2019-04-18 | 2019-07-23 | 大唐东北电力试验研究院有限公司 | A kind of middling speed roller surface restorative procedure preventing penetrating crack |
| CN111347192A (en) * | 2018-12-20 | 2020-06-30 | 天津大桥焊材集团有限公司 | Transition layer surfacing submerged arc flux-cored wire for repairing cold-rolled backing roll |
| CN112388202A (en) * | 2020-12-01 | 2021-02-23 | 四川大西洋焊接材料股份有限公司 | Welding wire flux core, welding wire, preparation method of welding wire and welding method |
| CN114346512A (en) * | 2021-12-29 | 2022-04-15 | 西安理工大学 | Welding wire for alloy steel-stainless steel composite material transition layer and preparation method thereof |
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| JPS61283489A (en) * | 1985-06-06 | 1986-12-13 | Sumitomo Metal Ind Ltd | Composite wire for build-up welding |
| CN1562552A (en) * | 2004-04-16 | 2005-01-12 | 华中科技大学 | Soldering wire material containing nitrogen alloyed alloy core in form of hard surface |
| 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 |
| CN102764940A (en) * | 2012-07-03 | 2012-11-07 | 宁波隆兴焊割科技股份有限公司 | Submerged-arc welding flux-cored wire |
| CN102950396A (en) * | 2012-08-24 | 2013-03-06 | 北京国电富通科技发展有限责任公司 | Self-protection flux-cored wire special for 20-control chromium steel welding |
| CN103753052A (en) * | 2014-01-23 | 2014-04-30 | 江苏科技大学 | Low-cost high-hardness self-protection build up welding flux-cored wire |
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2014
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Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| JPS61283489A (en) * | 1985-06-06 | 1986-12-13 | Sumitomo Metal Ind Ltd | Composite wire for build-up welding |
| CN1562552A (en) * | 2004-04-16 | 2005-01-12 | 华中科技大学 | Soldering wire material containing nitrogen alloyed alloy core in form of hard surface |
| 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 |
| CN102764940A (en) * | 2012-07-03 | 2012-11-07 | 宁波隆兴焊割科技股份有限公司 | Submerged-arc welding flux-cored wire |
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| CN103753052A (en) * | 2014-01-23 | 2014-04-30 | 江苏科技大学 | Low-cost high-hardness self-protection build up welding flux-cored wire |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104923935A (en) * | 2015-06-29 | 2015-09-23 | 山东钢铁股份有限公司 | Method for welding large-thickness slabs having high alloy content |
| CN109226995A (en) * | 2018-10-31 | 2019-01-18 | 首钢集团有限公司 | A kind of self-shield flux-cored welding wire for overlaying welding |
| CN111347192A (en) * | 2018-12-20 | 2020-06-30 | 天津大桥焊材集团有限公司 | Transition layer surfacing submerged arc flux-cored wire for repairing cold-rolled backing roll |
| CN110039253A (en) * | 2019-04-18 | 2019-07-23 | 大唐东北电力试验研究院有限公司 | A kind of middling speed roller surface restorative procedure preventing penetrating crack |
| CN112388202A (en) * | 2020-12-01 | 2021-02-23 | 四川大西洋焊接材料股份有限公司 | Welding wire flux core, welding wire, preparation method of welding wire and welding method |
| CN112388202B (en) * | 2020-12-01 | 2022-06-24 | 四川大西洋焊接材料股份有限公司 | Welding wire flux core, welding wire, preparation method of welding wire and welding method |
| CN114346512A (en) * | 2021-12-29 | 2022-04-15 | 西安理工大学 | Welding wire for alloy steel-stainless steel composite material transition layer and preparation method thereof |
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| CN104588907B (en) | 2016-06-22 |
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