CN107283087A - Titanium copper steel composite board flux-cored wire used for welding and its welding groove form - Google Patents
Titanium copper steel composite board flux-cored wire used for welding and its welding groove form Download PDFInfo
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- CN107283087A CN107283087A CN201710639020.7A CN201710639020A CN107283087A CN 107283087 A CN107283087 A CN 107283087A CN 201710639020 A CN201710639020 A CN 201710639020A CN 107283087 A CN107283087 A CN 107283087A
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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
-
- 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
- B23K33/00—Specially-profiled edge portions of workpieces for making soldering or welding connections; Filling the seams formed thereby
-
- 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
-
- 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
- B23K2103/00—Materials to be soldered, welded or cut
- B23K2103/02—Iron or ferrous alloys
- B23K2103/04—Steel or steel alloys
-
- 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
- B23K2103/00—Materials to be soldered, welded or cut
- B23K2103/08—Non-ferrous metals or alloys
- B23K2103/12—Copper or alloys thereof
-
- 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
- B23K2103/00—Materials to be soldered, welded or cut
- B23K2103/08—Non-ferrous metals or alloys
- B23K2103/14—Titanium or alloys thereof
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Nonmetallic Welding Materials (AREA)
Abstract
The invention discloses titanium copper steel composite board flux-cored wire used for welding, including medicine core and weldering skin, wherein medicine core V powder 55%~65% composed of the following components, Ni powder 15%~25% by mass percentage, Ag powder 15%~25%, above constituent mass percentage sum is 100%；Its preparation method is：Dried after V powder, Ni powder and Ag powder are mixed, then copper belt is wrapped up, drawing is produced；Groove type is asymmetric double V-shaped when using the flux-cored wire to weld, and joint has excellent obdurability；Flux-cored wire alloying element of the present invention is less, and preparation technology is simple, is convenient for large-scale mass production.
Description
Technical field
The invention belongs to Metal Material Welding technical field, and in particular to titanium-copper-steel composite board flux-cored wire used for welding,
The invention further relates to the preparation method of the flux-cored wire, and welding groove form.
Background technology
Titanium-copper-steel composite board is a kind of new use for explosive three-layer metal composite plate improved on the basis of titanium-steel composite board,
Have the excellent corrosion resistance of titanium and the excellent plasticity and toughness of steel concurrently.Its application in petroleum pipeline transport is realized, stone can be met
The requirement of oil-piping transport, can solve the problem of titanium-steel composite board is difficult welding again.Existing achievement in research shows that titanium is welded with steel
Connect big difficult in the presence of two：On the one hand, TiFe, TiFe are produced in weld seam2Compound between hard brittle metal, causes welding point brittle failure：
On the other hand, should so that there are very big remnants in postwelding joint because titanium and steel thermophysical property have very big difference
Power.At present, the docking of titanium-steel composite board is mainly realized by being capped the immiscible overlap welding mode of titanium, the steel of plate, or
Person is realized by introducing suitable intermediate layer in its butt-joint clearance, these welding method complex process, and therefore, it is difficult to realize
Engineering application.
The content of the invention
It is an object of the invention to provide titanium-copper-steel composite board flux-cored wire used for welding, solve titanium-copper-steel composite board without
The problem of method melting welding is docked.
It is a further object to provide the preparation method of titanium-copper-steel composite board flux-cored wire used for welding.
It is a still further object of the present invention to provide the groove type welded with flux-cored wire when titanium-copper-steel composite board is welded.
The technical solution adopted in the present invention is, titanium-copper-steel composite board flux-cored wire used for welding, including medicine core and weldering skin,
Wherein medicine core is composed of the following components by mass percentage：V powder 55%~65%, Ni powder 15%~25%, Ag powder 15%~
25%, above constituent mass percentage sum is 100%.
The features of the present invention is also resided in：
The purity of V powder is 99.99%；The purity of Ni powder is that the purity of 99.99%, Ag powder is 99.99%, three kinds of metal powders
Granularity be all 250-300 mesh.
Weldering skin is copper belt, red copper tape thickness 0.3mm, width 7mm.
The loading of the flux-cored wire is controlled 15%~20%.
Second technical scheme of the present invention be, the preparation side of titanium-copper-steel composite board flux-cored wire used for welding
Method, is comprised the following steps that：
Step 1：Weigh V powder 55%~65% respectively by mass percentage, Ni powder 15%~25%, Ag powder 15%~
25%, said components mass percent sum is 100%；
Step 2：V powder, Ni powder and the Ag that step 1 is weighed are put into ball mill, and well mixed medicine is obtained after ball milling 10h
Core powder；Heating in vacuum furnace is placed on, 150-200 DEG C of heating-up temperature, soaking time 2.5-3.5h is removed in medicinal powder
The crystallization water, obtain medicine core powder；
Step 3：The medicine core powder that step 2 is prepared is wrapped in copper belt by flux-cored wire producing machine, the
Before one drawing grinding tool aperture is 2.6mm, the procedure of drawing flux-cored wire first, copper belt acetone wiped clean；
Step 4：After first procedure drawing is finished, grinding tool aperture shift to successively 2.3mm, 2.0mm, 1.8mm, 1.6mm,
1.42mm, 1.34mm, 1.28mm, 1.24mm, final drawing flux-cored wire to a diameter of 1.2mm；
Step 5：After drawing welding wire is finished, flux-cored wire wipes the greasy dirt of top with the cotton for being moistened with acetone, it is final through around
Silk machine is wrapped in flux-cored wire stand-by on wire reel.
3rd technical scheme of the present invention be, when welding titanium-copper-steel composite board using above-mentioned flux-cored wire
Groove type, groove type is asymmetric double V-shaped, and steel side bevel angle is 55~65 °, and titanium side bevel angle is 90~95 °,
And titanium side slope mouthful root position is located at titanium-steel compound interface deviation steel side 0.5mm, groove fit-up gap is controlled in 2~5mm.
The beneficial effects of the invention are as follows,
(1) flux-cored wire diameter of the present invention is smaller, and string diameter is widely applicable for 1.2mm flux-cored wire, the flux-cored wire
Both GTAW can be used, welding is can be used for again；
(2)) V, Ni, Ag element are as flux-cored wire traditional Chinese medicine powder major components, for fusion welding TA1/Cu/X65 composite plates,
The selection and application of buffer layer material are most important.Consider from metallurgy action product, V element and Ti elements can form continuous solid
Solution, is conducive to suppressing the formation of Ti-Fe intermetallic compounds in weld seam；Ag elements can form limit solid solution with Ti elements,
The addition of Trace Ag element can both optimize transition layer tissue, improve the obdurability of weld seam；The addition of Ni elements can change weldering
The addition for meeting wetability of the material to mother metal, the forming quality of raising weld seam, and Ni advantageously reduces the fusing point of flux-cored wire.
And Cu is non-carbide former, solid solution can be formed with the various elements in titanium and steel, be conducive to suppressing transition zone
The formation of middle brittlement phase；
(3) TA1/Cu/X65 composite plates open asymmetric double V groove, can effectively be suppressed in welding process using intermediate copper layer
Direct metallurgy action of middle Ti, Fe element at compound interface, first welds steel layer with ER50-6 steel welding wire at steel side slope mouth, then
With the flux-cored wire of the present invention Ti side slope mouths at welding transition layer, finally with pure titanium welding wire welding titanium layer, gained welding point
With excellent obdurability；
(4) flux-cored wire alloying element of the present invention is less, and preparation technology is simple, is convenient for large-scale mass production.
Brief description of the drawings
Fig. 1 is TA1/Cu/X65 explosive clad plates schematic diagram and microstructure morphology；
Fig. 2 is TA1/Cu/X65 Explosion composite groove size schematic diagrames；
Fig. 3 is TA1/Cu/X65 Explosion composite grooves wlding filling schematic diagram；
When Fig. 4 is that flux-cored wire prepared by case study on implementation 2 is used for titanium-copper-steel composite board welding, transition zone, steel layer and titanium
The microstructure morphology of bed boundary；
When Fig. 5 is that flux-cored wire prepared by case study on implementation 2 is used for titanium-copper-steel composite board welding, the microstructure shape of weld seam
Looks figure；
When Fig. 6 is that flux-cored wire prepared by case study on implementation 2 is used for titanium-copper-steel composite board welding, microcosmic group of the entirety of weld seam
Knit shape appearance figure.
Embodiment
The present invention is described in detail with reference to the accompanying drawings and detailed description.
Titanium-copper-steel composite board flux-cored wire used for welding of the present invention, including medicine core and weldering skin, wherein medicine core press quality percentage
Than composed of the following components：V powder 55%~65%, purity 99.99%, Ni powder 15%~25%, purity 99.99%%, Ag powder
15%~25%, purity 99.99%, above constituent mass percentage sum is 100%, and the loading control of flux-cored wire exists
15%~20%.Weldering skin is copper belt, red copper tape thickness 0.3mm, width 7mm.
The effect of each component and function are as follows in the flux-cored wire：
When Cu elements do transition zone in flux-cored wire, due to Cu elements not with basic unit steel formation intermetallic compound fragility
Phase, and titanium steel composite board transition zone tissue topography can be changed.Cu is as intermediate layer, to changing between titanium and ferro element formation metal
Compound has certain buffer action, in weld seam, and the intermetallic compounds layer of titanium and iron is by the intermetallic compound generation of titanium and copper
Replace, the plasticity and toughness of weld seam is improved, because the intermetallic compound phase of titanium and copper is to softer, in the weld seam made
Thermal stress relative reduce this to avoiding postwelding crackle from having certain benefit.Cu solid solution can be interrupted between the metal of titanium and iron
Compound, and the hardness of weld seam can be reduced；
V element is as flux-cored wire traditional Chinese medicine powder major components, because V element and Ti elements can form continuous solid solution,
Hard crisp Ti-Fe intermetallic compounds in weld seam can be reduced；
Ag elements can both optimize transition layer tissue with Ti elements formation limit solid solution, the addition of Trace Ag element,
Improve the obdurability of weld seam；
The addition of Ni elements can change wetability of the welding material to mother metal, improve the forming quality of weld seam, and Ni
Addition advantageously reduce the fusing point of flux-cored wire.
The preparation method of above-mentioned titanium-copper-steel composite board flux-cored wire used for welding, is comprised the following steps that：
Step 1：Weigh V powder 55%~65% respectively by mass percentage, Ni powder 15%~25%, Ag powder 15%~
25%, above constituent mass percentage sum is 100%；
Step 2：V powder, Ni powder and the Ag that step 1 is weighed are put into ball mill, and well mixed medicine is obtained after ball milling 10h
Core powder；Heating in vacuum furnace is placed on, 150-200 DEG C of heating-up temperature, soaking time 2.5-3.5h is removed in medicinal powder
The crystallization water obtain medicine core powder；
Step 3：The medicine core powder that step 2 is prepared is wrapped in copper belt by flux-cored wire producing machine, the
Before one drawing grinding tool aperture is 2.6mm, the procedure of drawing flux-cored wire first, copper belt acetone wiped clean；
Step 4：After first procedure drawing is finished, grinding tool aperture shift to successively 2.3mm, 2.0mm, 1.8mm, 1.6mm,
1.42mm, 1.34mm, 1.28mm, 1.24mm, final drawing flux-cored wire to a diameter of 1.2mm；
Step 5：After drawing welding wire is finished, flux-cored wire wipes the greasy dirt of top with the cotton for being moistened with acetone, it is final through around
Silk machine is wrapped in flux-cored wire stand-by on wire reel.
Groove type during titanium-copper-steel composite board is welded using above-mentioned flux-cored wire, it is characterised in that groove type is
Asymmetric double V-shaped, steel side bevel angle is 55~65 °, and titanium side bevel angle is 90~95 °, and titanium side slope mouthful root position
At titanium-steel compound interface deviation steel side 0.5mm, groove fit-up gap is controlled in 2~5mm.
Embodiment 1
Step 1：By it is required weigh respectively mass percent be 55% V powder, 25% Ni powder and 20% Ag powder, it is above-mentioned
Constituent mass percentage sum is 100%；
Step 2：V powder, Ni powder and the Ag powder that step 1 is weighed are put into ball mill, and ball milling 10h obtains well mixed medicine
Core powder；Heating in vacuum furnace is placed on, 190 DEG C of heating-up temperature, soaking time 2.5h, purpose removes the knot in medicinal powder
Brilliant water, obtains medicine core powder；
Step 3：The medicine core powder that step 2 is prepared is wrapped in copper belt by flux-cored wire producing machine, filled
Amount control is 15%, before first of drawing grinding tool aperture is 2.6mm, the procedure of drawing flux-cored wire first, copper belt acetone
Wiped clean；
Step 4：After first procedure drawing is finished, grinding tool aperture shift to successively 2.3mm, 2.0mm, 1.8mm, 1.6mm,
1.42mm, 1.34mm, 1.28mm, 1.24mm, final drawing flux-cored wire to a diameter of 1.2mm；
Step 5：After drawing welding wire is finished, flux-cored wire wipes the greasy dirt of top with the cotton for being moistened with acetone, it is final through around
Silk machine is wrapped in flux-cored wire stand-by on wire reel.
Titanium-copper-pipeline steel composite board transition zone the flux-cored wire prepared with embodiment 1, coordinates pure titanium welding wire (titanium layer),
And ER50-6 steel welding wire (steel layer) welds TA1/Cu/X65 composite plates, TA1/Cu/X65 explosive clad plates microscopic appearance such as accompanying drawing is said
Shown in bright Fig. 1.Welding procedure is：TA1/Cu/X65 composite plates open asymmetric double-V groove (steel layer is under, titanium layer is upper),
Steel side bevel angle is 65 °, and titanium side bevel angle is 95 °, and titanium side slope mouthful root position is located at titanium-steel compound interface deviation steel
At the 0.5mm of side, groove fit-up gap is controlled in 2~5mm.TA1/Cu/X65 explosive clad plate groove size schematic diagram such as Fig. 2 institutes
Show, wlding filling schematic diagram is as shown in Figure 3.Welding sequence is：Steel layer-transition zone-titanium layer；Steel layer uses CO2Gas shielded arc welding,
Welding current is 180-220A, and transition zone is welded using manual TIG, and welding current is 100-130A, and titanium layer uses automatic tungsten electrode argon
Arc-welding, welding current is respectively：110-125A.
After tested, welding joint mechanical property is：Tensile strength 495MPa, yield strength 412MPa, elongation after fracture
8%, the contraction percentage of area 22%, room temperature impact work(60J.
Embodiment 2
Step 1：By it is required weigh respectively mass percent be 65% V powder, 20% Ni powder and 15% Ag powder, it is above-mentioned
Constituent mass percentage sum is 100%；
Step 2：V powder, Ni powder and the Ag powder that step 1 is weighed are put into ball mill, and ball milling 10h obtains well mixed medicine
Core powder；Heating in vacuum furnace is placed on, 150 DEG C of heating-up temperature, soaking time 2.5h, purpose removes the knot in medicinal powder
Brilliant water, obtains medicine core powder；
Step 3：The medicine core powder that step 2 is prepared is wrapped in copper belt by flux-cored wire producing machine, filled
Amount control is 20%, before first of drawing grinding tool aperture is 2.6mm, the procedure of drawing flux-cored wire first, copper belt acetone
Wiped clean；
Step 4：After first procedure drawing is finished, grinding tool aperture shift to successively 2.3mm, 2.0mm, 1.8mm, 1.6mm,
1.42mm, 1.34mm, 1.28mm, 1.24mm, final drawing flux-cored wire to a diameter of 1.2mm；
Step 5：After drawing welding wire is finished, flux-cored wire wipes the greasy dirt of top with the cotton for being moistened with acetone, it is final through around
Silk machine is wrapped in flux-cored wire stand-by on wire reel.
The flux-cored wire (transition zone) prepared with embodiment 2, coordinates pure titanium welding wire (titanium layer), and ER50-6 steel welding wire (steel
Layer) welding TA1/Cu/X65 composite plates；Welding procedure is：TA1/Cu/X65 composite plates open asymmetric double-V groove, and (steel layer exists
Under, titanium layer is upper), steel side bevel angle is 55 °, and titanium side bevel angle is 90 °, and titanium side slope mouthful root position is located at titanium-steel
At compound interface deviation steel side 0.5mm, groove fit-up gap is controlled in 5mm；Welding sequence is：Steel layer-transition zone-titanium layer；Steel
Layer uses CO2Gas shielded arc welding, welding current is 180-220A, and transition zone is welded using manual TIG, and welding current is 100-
130A, titanium layer uses automatic tungsten anode argon arc welding, and welding current is respectively：110-125A.
After tested, welding joint mechanical property is：Tensile strength 516MPa, yield strength 438MPa, elongation after fracture
9%, the contraction percentage of area 27%, room temperature impact work(80J.
The pure titanium welding wire of Cu-V-Ni-Ag flux-cored wires cooperation and ER50-6 steel welding wire welding titanium that embodiment 2 is prepared-
The deposited metal microstructure of copper-steel composite board is shown in Fig. 4 and Fig. 5, and Fig. 6 is the overall pattern of welding point.Can from metallograph
To find out, it is connected good between each layer filling metal of weld seam, the defect such as no macroscopic cracking.It is different from microstructure morphology
Separated between regional organization and tissue with melt run, melt run is clear, does not find the common cracks such as crackle, stomata near melt run.
Embodiment 3
Step 1：By it is required weigh respectively mass percent be 55% V powder, 20% Ni powder and 25% Ag powder, it is above-mentioned
Constituent mass percentage sum is 100%；
Step 2：V powder, Ni powder and the Ag powder that step 1 is weighed are put into ball mill, and ball milling 10h obtains well mixed medicine
Core powder；Heating in vacuum furnace is placed on, 180 DEG C of heating-up temperature, soaking time 3.5h, purpose removes the knot in medicinal powder
Brilliant water, obtains medicine core powder；
Step 3：The medicine core powder that step 2 is prepared is wrapped in copper belt by flux-cored wire producing machine, filled
Amount control is 20%, before first of drawing grinding tool aperture is 2.6mm, the procedure of drawing flux-cored wire first, copper belt acetone
Wiped clean；
Step 4：After first procedure drawing is finished, grinding tool aperture shift to successively 2.3mm, 2.0mm, 1.8mm, 1.6mm,
1.42mm, 1.34mm, 1.28mm, 1.24mm, final drawing flux-cored wire to a diameter of 1.2mm；
Step 5：After drawing welding wire is finished, flux-cored wire wipes the greasy dirt of top with the cotton for being moistened with acetone, it is final through around
Silk machine is wrapped in flux-cored wire stand-by on wire reel.
The flux-cored wire (transition zone) prepared with embodiment 3, coordinates pure titanium welding wire (titanium layer), and ER50-6 steel welding wire (steel
Layer) welding TA1/Cu/X65 composite plates；Welding procedure is：TA1/Cu/X65 composite plates open asymmetric double-V groove, and (steel layer exists
Under, titanium layer is upper), steel side bevel angle is 60 °, and titanium side bevel angle is 93 °, and titanium side slope mouthful root position is located at titanium-steel
At compound interface deviation steel side 0.5mm, groove fit-up gap is controlled in 3mm；Welding sequence is：Steel layer-transition zone-titanium layer；Steel
Layer uses CO2Gas shielded arc welding, welding current is 180-220A, and transition zone is welded using manual TIG, and welding current is 100-
130A, titanium layer uses automatic tungsten anode argon arc welding, and welding current is respectively：110-125A.
After tested, welding joint mechanical property is：Tensile strength 465MPa, yield strength 402MPa, elongation after fracture
6.8%, the contraction percentage of area 18%, room temperature impact work(58J.
Embodiment 4
Step 1：By it is required weigh respectively mass percent be 60% V powder, 15% Ni powder and 25% Ag powder, it is above-mentioned
Constituent mass percentage sum is 100%；
Step 2：V powder, Ni powder and the Ag powder that step 1 is weighed are put into ball mill, and ball milling 10h obtains well mixed medicine
Core powder；Heating in vacuum furnace is placed on, 180 DEG C of heating-up temperature, soaking time 3h, purpose removes the crystallization in medicinal powder
Water, obtains medicine core powder；
Step 3：The medicine core powder that step 2 is prepared is wrapped in copper belt by flux-cored wire producing machine, filled
Amount control is 17%, before first of drawing grinding tool aperture is 2.6mm, the procedure of drawing flux-cored wire first, copper belt acetone
Wiped clean；
Step 4：After first procedure drawing is finished, grinding tool aperture shift to successively 2.3mm, 2.0mm, 1.8mm, 1.6mm,
1.42mm, 1.34mm, 1.28mm, 1.24mm, final drawing flux-cored wire to a diameter of 1.2mm；
Step 5：After drawing welding wire is finished, flux-cored wire wipes the greasy dirt of top with the cotton for being moistened with acetone, it is final through around
Silk machine is wrapped in flux-cored wire stand-by on wire reel.
The flux-cored wire (transition zone) prepared with embodiment 4, coordinates pure titanium welding wire (titanium layer), and ER50-6 steel welding wire (steel
Layer) welding TA1/Cu/X65 composite plates；Welding procedure is：TA1/Cu/X65 composite plates open asymmetric double-V groove, and (steel layer exists
Under, titanium layer is upper), steel side bevel angle is 65 °, and titanium side bevel angle is 92 °, and titanium side slope mouthful root position is located at titanium-steel
At compound interface deviation steel side 0.5mm, groove fit-up gap is controlled in 2mm；Welding sequence is：Steel layer-transition zone-titanium layer；Steel
Layer uses CO2Gas shielded arc welding, welding current is 180-220A, and transition zone is welded using manual TIG, and welding current is 100-
130A, titanium layer uses automatic tungsten anode argon arc welding, and welding current is respectively：110-125A.
After tested, welding joint mechanical property is：Tensile strength 470MPa, yield strength 411MPa, elongation after fracture
7.2%, the contraction percentage of area 19%, room temperature impact work(63J.
Embodiment 5
Step 1：By it is required weigh respectively mass percent be 65% V powder, 15% Ni powder and 20% Ag powder, it is above-mentioned
Constituent mass percentage sum is 100%；
Step 2：V powder, Ni powder and the Ag powder that step 1 is weighed are put into ball mill, and ball milling 10h obtains well mixed medicine
Core powder；Heating in vacuum furnace is placed on, 200 DEG C of heating-up temperature, soaking time 3.5h, purpose removes the knot in medicinal powder
Brilliant water, obtains medicine core powder；
Step 3：The medicine core powder that step 2 is prepared is wrapped in copper belt by flux-cored wire producing machine, filled
Amount control is 20%, before first of drawing grinding tool aperture is 2.6mm, the procedure of drawing flux-cored wire first, copper belt acetone
Wiped clean；
Step 4：After first procedure drawing is finished, grinding tool aperture shift to successively 2.3mm, 2.0mm, 1.8mm, 1.6mm,
1.42mm, 1.34mm, 1.28mm, 1.24mm, final drawing flux-cored wire to a diameter of 1.2mm；
Step 5：After drawing welding wire is finished, flux-cored wire wipes the greasy dirt of top with the cotton for being moistened with acetone, it is final through around
Silk machine is wrapped in flux-cored wire stand-by on wire reel.
The flux-cored wire (transition zone) prepared with embodiment 5, coordinates pure titanium welding wire (titanium layer), and ER50-6 steel welding wire (steel
Layer) welding TA1/Cu/X65 composite plates；Welding procedure is：TA1/Cu/X65 composite plates open asymmetric double-V groove, and (steel layer exists
Under, titanium layer is upper), steel side bevel angle is 65 °, and titanium side bevel angle is 95 °, and titanium side slope mouthful root position is located at titanium-steel
At compound interface deviation steel side 0.5mm, groove fit-up gap is controlled in 5mm；Welding sequence is：Steel layer-transition zone-titanium layer；Steel
Layer uses CO2Gas shielded arc welding, welding current is 180-220A, and transition zone is welded using manual TIG, and welding current is 100-
130A, titanium layer uses automatic tungsten anode argon arc welding, and welding current is respectively：110-125A.
After tested, welding joint mechanical property is：Tensile strength 465MPa, yield strength 402MPa, elongation after fracture
7.9%, the contraction percentage of area 21%, room temperature impact work(61J.
The optimized V powder that when the control of flux-cored wire medicinal powder loading is 15%~20%, mass percent is 65%,
In the case of 25% Ni powder and 10% Ag powder, welding titanium-copper-steel laminated composite plate can obtain molding effect is best, scarce
Fall into the minimum and preferable weld seam of mechanical property；TA1/Cu/X65 composite plates open asymmetric double V groove, and steel side bevel angle is
65 °, titanium side bevel angle is 90 °, and titanium side slope mouthful root position is located at titanium-steel compound interface deviation steel side 0.5mm, groove
Fit-up gap is controlled in 5mm, and gained welding point has excellent obdurability.
Claims (6)
1. titanium-copper-steel composite board flux-cored wire used for welding, it is characterised in that including medicine core and weldering skin, wherein medicine core presses quality hundred
Divide than composed of the following components：V powder 55%~65%, Ni powder 15%~25%, Ag powder 15%~25%, above constituent mass hundred
It is 100% to divide than sum.
2. titanium-copper-steel composite board flux-cored wire used for welding according to claim 1, it is characterised in that the purity of V powder is
99.99%；The purity of Ni powder is that the purity of 99.99%, Ag powder is 99.99%, and the granularity of three kinds of metal powders is all 250-300
Mesh.
3. titanium-copper-steel composite board flux-cored wire used for welding according to claim 1, it is characterised in that weldering skin is red copper
Band, red copper tape thickness 0.3mm, width 7mm.
4. titanium-copper-steel composite board flux-cored wire used for welding according to claim 1, it is characterised in that the flux-cored wire
Loading is controlled 15%~20%.
5. the preparation method of titanium-copper-steel composite board flux-cored wire used for welding, it is characterised in that comprise the following steps that：
Step 1：Weigh V powder 55%~65% respectively by mass percentage, Ni powder 15%~25%, Ag powder 15%~25%, on
It is 100% to state constituent mass percentage sum；
Step 2：V powder, Ni powder and the Ag powder that step 1 is weighed are put into ball mill, and well mixed medicine core is obtained after ball milling 10h
Powder；Heating in vacuum furnace is placed on, 150-200 DEG C of heating-up temperature, soaking time 2.5-3.5h is removed in medicinal powder
The crystallization water, obtains medicine core powder；
Step 3：The medicine core powder that step 2 is prepared is wrapped in copper belt by flux-cored wire producing machine, first of drawing
Grinding tool aperture is pulled out for 2.6mm, before the procedure of drawing flux-cored wire first, copper belt acetone wiped clean；
Step 4：After first procedure drawing is finished, grinding tool aperture shift to successively 2.3mm, 2.0mm, 1.8mm, 1.6mm,
1.42mm, 1.34mm, 1.28mm, 1.24mm, final drawing flux-cored wire to a diameter of 1.2mm；
Step 5：After drawing welding wire is finished, flux-cored wire wipes the greasy dirt of top with the cotton for being moistened with acetone, finally through spiral filament forming machine
Flux-cored wire is wrapped in stand-by on wire reel.
6. groove type during titanium-copper-steel composite board is welded using flux-cored wire as claimed in claim 1, it is characterised in that
Groove type is asymmetric double V-shaped, and steel side bevel angle is 55~65 °, and titanium side bevel angle is 90~95 °, and titanium side slope
Mouth root position is located at titanium-steel compound interface deviation steel side 0.5mm, and groove fit-up gap is controlled in 2~5mm.
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| CN201710639020.7A CN107283087A (en) | 2017-07-31 | 2017-07-31 | Titanium copper steel composite board flux-cored wire used for welding and its welding groove form |
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| CN201710639020.7A CN107283087A (en) | 2017-07-31 | 2017-07-31 | Titanium copper steel composite board flux-cored wire used for welding and its welding groove form |
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| CN108405866A (en) * | 2018-02-09 | 2018-08-17 | 南京理工大学 | A kind of titanium/steel transit joint structure of soft network segmentation and gradient components |
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| CN104741832A (en) * | 2015-03-12 | 2015-07-01 | 西安理工大学 | Cu-V-Ag flux-cored wire for titanium-pipeline-steel welding and preparing method thereof |
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| CN109014550A (en) * | 2018-09-30 | 2018-12-18 | 宝鸡市汇鑫金属复合材料有限公司 | Nickel steel titanium explosion weldering composite tube production method, multiple tube and reaction kettle |
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