CN104741832A - Cu-V-Ag flux-cored wire for titanium-pipeline-steel welding and preparing method thereof - Google Patents
Cu-V-Ag flux-cored wire for titanium-pipeline-steel welding and preparing method thereof Download PDFInfo
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- CN104741832A CN104741832A CN201510109698.5A CN201510109698A CN104741832A CN 104741832 A CN104741832 A CN 104741832A CN 201510109698 A CN201510109698 A CN 201510109698A CN 104741832 A CN104741832 A CN 104741832A
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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
- B23K35/325—Ti as the principal constituent
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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
- B23K35/40—Making wire or rods for soldering or welding
- B23K35/406—Filled tubular wire or rods
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Abstract
The invention discloses a Cu-V-Ag flux-cored wire for titanium-pipeline-steel welding. The Cu-V-Ag flux-cored wire comprises a core wire and a coating. The core wire comprises, by mass, 80% to 90% of V powder and 10% to 20% of Ag powder; the sum of the mass percent of the components is 100%, and the coating is made of a copper band. The invention further discloses a preparing method of the Cu-V-Ag flux-cored wire. The preparing method includes the steps of evenly mixing the V powder and the Ag powder, then drying the mixture, wrapping the mixture with the copper band, drawing the mixture to enable the diameter to be 1.2 mm, and obtaining the Cu-V-Ag flux-cored wire. According to the Cu-V-Ag flux-cored wire for titanium-pipeline-steel welding, V elements and Ti elements can form continuous solid solutions; Cu is non-carbide-forming-elements, the Cu and various elements in steel can form solid solutions, and the certain effect on preventing intermetallic compound brittle phases of a transition layer is achieved. Ag elements and Ti elements have the certain solubility, and brittle phases such as intermetallic compounds are avoided; silver is soft in texture, the welding stress of the transition layer can be reduced, and cracks can be reduced.
Description
Technical field
The invention belongs to Metal Material Welding technical field, be specifically related to a kind of titanium-pipe line steel welding Cu-V-Ag flux-cored wire, the invention still further relates to the preparation method of this flux-cored wire.
Background technology
Titanium-pipe line steel composite plate is a kind of new use for explosive ply-metal, has the strong corrosion resistant of titanium and the high-strength tenacity of pipe line steel concurrently.Realize its application on oil gas transport pipeline, the difficult point that single pipe line steel pipeline is easily corroded can be solved, the high cost problem manufacturing oil gas transport pipeline with single resistant material can be solved again.But, because titanium, steel Wuli-Shili-Renli system approach differ greatly, very easily form low-melting-point eutectic and Ti, Fe intermetallic frangible compounds, make titanium-pipe line steel composite plate be difficult to melting welding and connect, seriously hinder its application on oil and gas pipes.At present, docking problem about titanium-pipe line steel composite plate only has the report in a small amount of welding procedure, and the overlap joint welding manner that the docking of existing titanium-pipe line steel composite plate all adopts the titanium, the steel that add cover plate immiscible, this welding method complex process, be difficult to realize through engineering approaches application, there is not yet the report about its melting welding connecting welding material.
Summary of the invention
The object of this invention is to provide a kind of titanium-pipe line steel welding Cu-V-Ag flux-cored wire, achieve the melting welding docking of titanium-pipe line steel composite plate.
Another object of the present invention is to provide the preparation method of a kind of titanium-pipe line steel welding Cu-V-Ag flux-cored wire.
The technical solution adopted in the present invention is, Cu-V-Ag flux-cored wire is used in titanium-pipe line steel welding, and comprise medicine core and crust, its Chinese medicine core is composed of the following components by mass percentage: V powder 80 ~ 90%, Ag powder 10 ~ 20%, above constituent mass percentage sum is 100%; Crust is copper belt.
Feature of the present invention is also,
The loading (weight) of medicine core is 13 ~ 15%.
Another technical scheme of the present invention is, titanium-pipe line steel welding preparation method of Cu-V-Ag flux-cored wire, and concrete steps are as follows:
Step 1: take the V powder of 80 ~ 90% and the Ag powder of 10 ~ 20% by mass percentage respectively, said components mass percent sum is 100%;
Step 2: V powder step 1 taken and Ag powder are put in mixed powder machine, is dry mixed the medicine core powder obtaining mixing; Be placed in vacuum furnace and dry;
Step 3: the medicine core powder wrapped of step 2 being dried by flux-cored wire producing machine is in copper belt, and the loading controlling medicine core powder is 13 ~ 15%, and being then drawn to diameter is 1.2mm, obtains Cu-V-Ag flux-cored wire.
Feature of the present invention is also,
In step 2, bake out temperature is 200 DEG C, and the time is 2.5h.
The invention has the beneficial effects as follows,
(1) titanium of the present invention-pipe line steel welding Cu-V-Ag flux-cored wire, diameter is that the flux-cored wire of 1.2mm is widely applicable, and this flux-cored wire both can adopt GTAW to weld, and automatic non-melt pole inert gas-shielded arc welding can be adopted again to weld;
(2) titanium of the present invention-pipe line steel welding Cu-V-Ag flux-cored wire, V element is as flux-cored wire traditional Chinese medicine powder major components, and for melting pure titanium TA1/Q345 pipe line steel composite plate, the choosing of buffer layer material is then most important with application.Consider from metallurgy action product, V element can form continuous solid solution with Ti element, and Cu is non-carbide former, all forming solid solution with the various elements in V and steel, playing a role for avoiding the formation of excessive layer intermetallic compound brittlement phase.Adding of appropriate V element can make transition zone and cladding titanium metallurgical binding, improves interlayer tissue topography.Ag element and Ti unit have certain solubility, and do not form the brittlement phase such as intermetallic compound, and silverly softer, can reduce transition zone welding stress, reduce the generation of crackle.Adding of Ag element can refinement transition zone tissue, improves the obdurability of weld seam.In welding process, silver element add the wetability and mobility that can improve flux-cored wire, vital effect is played for the shaping of weld seam.
(3) preparation method of titanium of the present invention-pipe line steel welding Cu-V-Ag flux-cored wire, preparation technology is simple, is convenient to carry out large-scale mass production.
Detailed description of the invention
Below in conjunction with detailed description of the invention, the present invention is described in detail.
Titanium of the present invention-pipe line steel welding Cu-V-Ag flux-cored wire, comprise medicine core and crust, its Chinese medicine core is composed of the following components by mass percentage: V powder 80 ~ 90%, Ag powder 10 ~ 20%, and above constituent mass percentage sum is 100%; Crust is copper belt.
The loading (weight) of medicine core is 13 ~ 15%.
In Cu-V-Ag flux-cored wire the effect of component and function as follows:
Cu element: because Cu element does not form intermetallic compound brittlement phase with basic unit steel, and titanium steel composite board transition zone tissue topography can be changed.Copper is as intermediate layer, intermetallic compound is formed to titanium and ferro element and has certain buffer action, in weld seam, the intermetallic compounds layer of titanium and iron is replaced by the intermetallic compound of titanium and copper, the plasticity of weld seam and toughness are improved, because the intermetallic compound of titanium and copper is to softer, the thermal stress in the weld seam made reduces this relatively has certain benefit to avoiding postwelding crackle.The solid solution of copper can interrupt the intermetallic compound of titanium and iron, and can reduce the hardness of weld seam.
V element is as flux-cored wire traditional Chinese medicine powder major components, for melting pure titanium TA1/Q345 pipe line steel composite plate, the choice and application of buffer layer material is most important, consider from metallurgy action product, V element can form continuous solid solution with Ti element, and Cu is non-carbide former, all forming solid solution with the various elements in V and steel, playing a role for avoiding the formation of excessive layer intermetallic compound brittlement phase.Adding of appropriate V element can make transition zone and cladding titanium metallurgical binding, improves interlayer tissue topography.
Ag element and Ti unit have certain solubility, and do not form the brittlement phase such as intermetallic compound, and silverly softer, can reduce transition zone welding stress, reduce the generation of crackle.Adding of Ag element can refinement transition zone tissue, improves the obdurability of weld seam.In welding process, silver element add the wetability and mobility that can improve flux-cored wire, vital effect is played for the shaping of weld seam.
The preparation method of above-mentioned titanium-pipe line steel welding Cu-V-Ag flux-cored wire, concrete steps are as follows:
Step 1: take the V powder of 80 ~ 90% and the Ag powder of 10 ~ 20% by mass percentage respectively, said components mass percent sum is 100%;
Step 2: V powder step 1 taken and Ag powder are put in mixed powder machine, is dry mixed the medicine core powder obtaining mixing; Be placed in vacuum furnace and dry, to remove the crystallization water in medicine core powder, bake out temperature is 200 DEG C, and the time is 2.5h;
Step 3: the medicine core powder wrapped of step 2 being dried by flux-cored wire producing machine is in copper belt, and the loading controlling medicine core powder is 13 ~ 15%, and being then drawn to diameter is 1.2mm, obtains Cu-V-Ag flux-cored wire.
Embodiment 1
Step 1: take the V powder of 80% and the Ag powder of 20% by mass percentage respectively, said components mass percent sum is 100%;
Step 2: V powder step 1 taken and Ag powder are put in mixed powder machine, is dry mixed the medicine core powder obtaining mixing; Be placed in vacuum furnace and dry, to remove the crystallization water in medicine core powder, bake out temperature is 200 DEG C, and the time is 2.5h;
Step 3: the medicine core powder wrapped of step 2 being dried by flux-cored wire producing machine is in copper belt, and the loading controlling medicine core powder is 13%, and being then drawn to diameter is 1.2mm, obtains Cu-V-Ag flux-cored wire.
With Cu-V-Ag flux-cored wire (transition zone) prepared by embodiment 1, coordinate pure titanium silk (titanium layer), and ER50-6 pipe line steel welding wire (steel layer) welds titanium-pipe line steel (TA1-Q345) composite plate.Welding procedure is: titanium-pipe line steel (TA1-Q345) composite plate opens asymmetric double-V groove (steel layer under, titanium layer is upper), and steel side bevel angle is 60 °, and titanium side bevel angle is 100 °.Welding sequence is: steel layer-transition zone-titanium layer; Steel layer adopts CO
2gas shielded arc welding, welding current is 200-230A, and transition zone adopts manual TIG weldering, and welding current is 110-130A, and titanium layer adopts automatic tungsten anode argon arc welding, and welding current is respectively: 130-150A.
After tested, joint mechanical property is: tensile strength 500MPa, yield strength 405MPa, elongation after fracture 7%, the contraction percentage of area 12%, room temperature impact merit 13J.
Embodiment 2
Step 1: take the V powder of 90% and the Ag powder of 10% by mass percentage respectively, said components mass percent sum is 100%;
Step 2: V powder step 1 taken and Ag powder are put in mixed powder machine, is dry mixed the medicine core powder obtaining mixing; Be placed in vacuum furnace and dry, to remove the crystallization water in medicine core powder, bake out temperature is 200 DEG C, and the time is 2.5h;
Step 3: the medicine core powder wrapped of step 2 being dried by flux-cored wire producing machine is in copper belt, and the loading controlling medicine core powder is 14%, and being then drawn to diameter is 1.2mm, obtains Cu-V-Ag flux-cored wire.
With Cu-V-Ag flux-cored wire (transition zone) prepared by embodiment 2, coordinate pure titanium silk (titanium layer), and ER50-6 pipe line steel welding wire (steel layer) welds titanium-pipe line steel (TA1-Q345) composite plate.Welding procedure is: titanium-pipe line steel (TA1-Q345) composite plate opens asymmetric double-V groove (steel layer under, titanium layer is upper), and steel side bevel angle is 60 °, and titanium side bevel angle is 100 °.Welding sequence is: steel layer-transition zone-titanium layer; Steel layer adopts CO
2gas shielded arc welding, welding current is 200-230A, and transition zone adopts manual TIG weldering, and welding current is 110-130A, and titanium layer adopts automatic tungsten anode argon arc welding, and welding current is respectively: 130-150A.
After tested, joint mechanical property is: tensile strength 530MPa, yield strength 410MPa, elongation after fracture 7.5%, the contraction percentage of area 14%, room temperature impact merit 33J.
Embodiment 3
Step 1: take the V powder of 85% and the Ag powder of 15% by mass percentage respectively, said components mass percent sum is 100%;
Step 2: V powder step 1 taken and Ag powder are put in mixed powder machine, is dry mixed the medicine core powder obtaining mixing; Be placed in vacuum furnace and dry, to remove the crystallization water in medicine core powder, bake out temperature is 200 DEG C, and the time is 2.5h;
Step 3: the medicine core powder wrapped of step 2 being dried by flux-cored wire producing machine is in copper belt, and the loading controlling medicine core powder is 15%, and being then drawn to diameter is 1.2mm, obtains Cu-V-Ag flux-cored wire.
With Cu-V-Ag flux-cored wire (transition zone) prepared by embodiment 3, coordinate pure titanium silk (titanium layer), and ER50-6 pipe line steel welding wire (steel layer) welds titanium-pipe line steel (TA1-Q345) composite plate.Welding procedure is: titanium-pipe line steel (TA1-Q345) composite plate opens asymmetric double-V groove (steel layer under, titanium layer is upper), and steel side bevel angle is 60 °, and titanium side bevel angle is 100 °.Welding sequence is: steel layer-transition zone-titanium layer; Steel layer adopts CO2 gas shielded arc welding, and welding current is 200-230A, and transition zone adopts manual TIG weldering, and welding current is 110-130A, and titanium layer adopts automatic tungsten anode argon arc welding, and welding current is respectively: 130-150A.
After tested, joint mechanical property is: tensile strength 508MPa, yield strength 408MPa, elongation after fracture 6%, the contraction percentage of area 11.5%, room temperature impact merit 20J.
Claims (4)
1. Cu-V-Ag flux-cored wire is used in titanium-pipe line steel welding, and it is characterized in that, comprise medicine core and crust, its Chinese medicine core is composed of the following components by mass percentage: V powder 80 ~ 90%, Ag powder 10 ~ 20%, and above constituent mass percentage sum is 100%; Crust is copper belt.
2. titanium according to claim 1-pipe line steel welding Cu-V-Ag flux-cored wire, is characterized in that, the loading of medicine core is 13 ~ 15%.
3. titanium-pipe line steel welding preparation method of Cu-V-Ag flux-cored wire, it is characterized in that, concrete steps are as follows:
Step 1: take the V powder of 80 ~ 90% and the Ag powder of 10 ~ 20% by mass percentage respectively, said components mass percent sum is 100%;
Step 2: V powder step 1 taken and Ag powder are put in mixed powder machine, is dry mixed the medicine core powder obtaining mixing; Be placed in vacuum furnace and dry;
Step 3: the medicine core powder wrapped of step 2 being dried by flux-cored wire producing machine is in copper belt, and the loading controlling medicine core powder is 13 ~ 15%, and being then drawn to diameter is 1.2mm, obtains Cu-V-Ag flux-cored wire.
4. the preparation method of titanium according to claim 3-pipe line steel welding Cu-V-Ag flux-cored wire, it is characterized in that, in step 2, bake out temperature is 200 DEG C, and the time is 2.5h.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510109698.5A CN104741832A (en) | 2015-03-12 | 2015-03-12 | Cu-V-Ag flux-cored wire for titanium-pipeline-steel welding and preparing method thereof |
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| CN201510109698.5A CN104741832A (en) | 2015-03-12 | 2015-03-12 | Cu-V-Ag flux-cored wire for titanium-pipeline-steel welding and preparing method thereof |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106238948A (en) * | 2016-08-31 | 2016-12-21 | 西安理工大学 | Titanium pipe line steel welding Cu Ag Zr welding wire and preparation method thereof |
| CN106475709A (en) * | 2016-12-14 | 2017-03-08 | 西安理工大学 | A kind of welding wire for welding titanium steel composite board transition zone and preparation method thereof |
| CN106493481A (en) * | 2016-12-14 | 2017-03-15 | 西安理工大学 | Titanium steel composite board flux-cored wire used for welding and preparation method thereof |
| CN107283087A (en) * | 2017-07-31 | 2017-10-24 | 西安理工大学 | Titanium copper steel composite board flux-cored wire used for welding and its welding groove form |
| CN107378305A (en) * | 2017-07-31 | 2017-11-24 | 西安理工大学 | Titanium-steel dissimilar metal plate sheet welding flux-cored wire and preparation method thereof |
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| CN104028917A (en) * | 2014-06-04 | 2014-09-10 | 西安理工大学 | Flux-cored wire for fusion welding butt joint of titanium-steel composite board and preparation method of flux-cored wire |
| CN104028914A (en) * | 2014-05-30 | 2014-09-10 | 西安理工大学 | Welding wire for welding titanium-pipeline steel composite board approximate-steel layer and preparation method thereof |
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2015
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Patent Citations (5)
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| US4758404A (en) * | 1985-11-18 | 1988-07-19 | Daido Metal Company, Ltd. | Method of producing composite material for sliding member |
| US20040170860A1 (en) * | 2003-02-17 | 2004-09-02 | Roy Hardwick | Method of producing metal composite materials comprising incompatible metals |
| CN101664852A (en) * | 2009-09-29 | 2010-03-10 | 西部金属材料股份有限公司 | Titanium and steel composite board welding method |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106238948A (en) * | 2016-08-31 | 2016-12-21 | 西安理工大学 | Titanium pipe line steel welding Cu Ag Zr welding wire and preparation method thereof |
| CN106475709A (en) * | 2016-12-14 | 2017-03-08 | 西安理工大学 | A kind of welding wire for welding titanium steel composite board transition zone and preparation method thereof |
| CN106493481A (en) * | 2016-12-14 | 2017-03-15 | 西安理工大学 | Titanium steel composite board flux-cored wire used for welding and preparation method thereof |
| CN107283087A (en) * | 2017-07-31 | 2017-10-24 | 西安理工大学 | Titanium copper steel composite board flux-cored wire used for welding and its welding groove form |
| CN107378305A (en) * | 2017-07-31 | 2017-11-24 | 西安理工大学 | Titanium-steel dissimilar metal plate sheet welding flux-cored wire and preparation method thereof |
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