CN115401292A - Wire connecting equipment and method for magnesium alloy electric arc additive manufacturing - Google Patents
Wire connecting equipment and method for magnesium alloy electric arc additive manufacturing Download PDFInfo
- Publication number
- CN115401292A CN115401292A CN202210506756.8A CN202210506756A CN115401292A CN 115401292 A CN115401292 A CN 115401292A CN 202210506756 A CN202210506756 A CN 202210506756A CN 115401292 A CN115401292 A CN 115401292A
- Authority
- CN
- China
- Prior art keywords
- wires
- wire
- clamping
- additive manufacturing
- magnesium alloy
- 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.)
- Pending
Links
- 239000000654 additive Substances 0.000 title claims abstract description 38
- 230000000996 additive effect Effects 0.000 title claims abstract description 38
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 36
- 229910000861 Mg alloy Inorganic materials 0.000 title claims abstract description 34
- 238000000034 method Methods 0.000 title claims abstract description 30
- 238000010891 electric arc Methods 0.000 title claims abstract description 19
- 230000007246 mechanism Effects 0.000 claims abstract description 62
- 238000009721 upset forging Methods 0.000 claims abstract description 6
- 238000004140 cleaning Methods 0.000 claims description 59
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 claims description 36
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 31
- 238000004506 ultrasonic cleaning Methods 0.000 claims description 26
- 235000019441 ethanol Nutrition 0.000 claims description 25
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 18
- 229910052786 argon Inorganic materials 0.000 claims description 18
- 239000003960 organic solvent Substances 0.000 claims description 16
- 239000000463 material Substances 0.000 claims description 14
- 238000005406 washing Methods 0.000 claims description 13
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims description 12
- XNGIFLGASWRNHJ-UHFFFAOYSA-N phthalic acid Chemical compound OC(=O)C1=CC=CC=C1C(O)=O XNGIFLGASWRNHJ-UHFFFAOYSA-N 0.000 claims description 12
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 claims description 10
- 238000012544 monitoring process Methods 0.000 claims description 10
- 230000008569 process Effects 0.000 claims description 9
- 239000003513 alkali Substances 0.000 claims description 6
- 239000001488 sodium phosphate Substances 0.000 claims description 6
- RYFMWSXOAZQYPI-UHFFFAOYSA-K trisodium phosphate Chemical compound [Na+].[Na+].[Na+].[O-]P([O-])([O-])=O RYFMWSXOAZQYPI-UHFFFAOYSA-K 0.000 claims description 6
- 229910000406 trisodium phosphate Inorganic materials 0.000 claims description 6
- 235000019801 trisodium phosphate Nutrition 0.000 claims description 6
- XSTXAVWGXDQKEL-UHFFFAOYSA-N Trichloroethylene Chemical group ClC=C(Cl)Cl XSTXAVWGXDQKEL-UHFFFAOYSA-N 0.000 claims description 5
- 239000002253 acid Substances 0.000 claims description 5
- 238000006073 displacement reaction Methods 0.000 claims description 5
- 239000007789 gas Substances 0.000 claims description 5
- UBOXGVDOUJQMTN-UHFFFAOYSA-N trichloroethylene Natural products ClCC(Cl)Cl UBOXGVDOUJQMTN-UHFFFAOYSA-N 0.000 claims description 5
- CYTYCFOTNPOANT-UHFFFAOYSA-N Perchloroethylene Chemical group ClC(Cl)=C(Cl)Cl CYTYCFOTNPOANT-UHFFFAOYSA-N 0.000 claims description 4
- 229920001971 elastomer Polymers 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 3
- 239000002245 particle Substances 0.000 claims description 3
- 229920002379 silicone rubber Polymers 0.000 claims description 3
- 238000005554 pickling Methods 0.000 claims description 2
- 238000005498 polishing Methods 0.000 claims description 2
- 230000001681 protective effect Effects 0.000 claims description 2
- 239000004945 silicone rubber Substances 0.000 claims description 2
- 238000003466 welding Methods 0.000 description 16
- 239000000126 substance Substances 0.000 description 12
- 239000012535 impurity Substances 0.000 description 9
- 230000002378 acidificating effect Effects 0.000 description 6
- 229910052751 metal Inorganic materials 0.000 description 6
- 239000002184 metal Substances 0.000 description 6
- 238000002156 mixing Methods 0.000 description 6
- 238000003756 stirring Methods 0.000 description 6
- 238000013459 approach Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 239000007788 liquid Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 239000011521 glass Substances 0.000 description 3
- 238000009825 accumulation Methods 0.000 description 2
- 239000000084 colloidal system Substances 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 239000004519 grease Substances 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- -1 silver aluminum Chemical compound 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 239000001993 wax Substances 0.000 description 2
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
- 125000003158 alcohol group Chemical group 0.000 description 1
- 230000001476 alcoholic effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000005574 cross-species transmission Effects 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 238000005304 joining Methods 0.000 description 1
- 238000013021 overheating Methods 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 238000013519 translation Methods 0.000 description 1
Images
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
- B23K9/00—Arc welding or cutting
- B23K9/16—Arc welding or cutting making use of shielding gas
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
- B08B3/04—Cleaning involving contact with liquid
- B08B3/08—Cleaning involving contact with liquid the liquid having chemical or dissolving effect
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
- B08B3/04—Cleaning involving contact with liquid
- B08B3/10—Cleaning involving contact with liquid with additional treatment of the liquid or of the object being cleaned, e.g. by heat, by electricity or by vibration
- B08B3/12—Cleaning involving contact with liquid with additional treatment of the liquid or of the object being cleaned, e.g. by heat, by electricity or by vibration by sonic or ultrasonic vibrations
-
- 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
- B23K9/00—Arc welding or cutting
- B23K9/12—Automatic feeding or moving of electrodes or work for spot or seam welding or cutting
- B23K9/133—Means for feeding electrodes, e.g. drums, rolls, motors
-
- 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
- B23K9/00—Arc welding or cutting
- B23K9/32—Accessories
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B33—ADDITIVE MANUFACTURING TECHNOLOGY
- B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
- B33Y30/00—Apparatus for additive manufacturing; Details thereof or accessories therefor
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Plasma & Fusion (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Pressure Welding/Diffusion-Bonding (AREA)
Abstract
The invention provides a wire connecting device and a method for magnesium alloy electric arc additive, wherein the contact surface of two sections of wires to be connected is polished to be flat, and then the parts to be connected and the nearby areas of the two sections of wires are cleaned for 6 steps; magnesium alloy wires to be connected are installed on the wire connecting device shown in the figure 1, the extending length of the wires, the secondary no-load voltage and the electrifying time are adjusted through a manual control device, after electrifying, flashing and splashing are carried out to enable two contact surfaces to be completely welded together, a feeding mechanism rapidly applies upset forging force to the extending wires, and the first wire connection is completed; and (4) loosening the clamping mechanism, readjusting the extending length of the wire by using a manual control device, resetting the secondary no-load voltage, electrifying but not applying upset forging, and finishing wire connection. The invention connects two sections of wires for electric arc additive manufacturing, ensures that the electric arc additive manufacturing is not interrupted, has better interface quality for wire connection, and meets the requirement of the electric arc additive manufacturing.
Description
Technical Field
The invention belongs to the technical field of additive manufacturing, and particularly relates to wire material connecting equipment and method for magnesium alloy electric arc additive.
Background
The electric arc additive manufacturing technology is an additive manufacturing technology which is gradually developed in recent years, and metal parts are gradually formed by accumulating wire materials layer by layer from a line-surface-body layer according to a three-dimensional digital model under the control of a set program on the basis of a discrete and accumulation manufacturing principle. The method has the advantages of no need of a mold, short integral manufacturing period, high accumulation rate, capability of forming large complex structural parts, realization of digital, intelligent and parallel manufacturing and the like, and gradually becomes another excellent additive manufacturing method following the selective laser melting technology.
When the additive manufacturing of a large-scale complex structural part is carried out under the existing electric arc additive technology, the wires often break due to unsmooth running, and in addition, because one coil of wires is limited, half of formed wires often run out, so that the wires are connected by wire connecting equipment and method, and the process of additive manufacturing is ensured not to be interrupted.
Disclosure of Invention
The invention provides a wire connecting method for magnesium alloy electric arc additive, which aims to solve the defects of the prior art, avoid the situation that half of a structural member is formed and the wire is used up and ensure the smooth additive manufacturing.
The invention also provides equipment used by the method.
In order to achieve the purpose, the invention adopts the following technical scheme:
a wire connecting method for magnesium alloy electric arc additive manufacturing comprises the following steps:
polishing and flattening two end faces of wires to be connected;
then cleaning the surface of the silk material, and respectively carrying out organic solvent cleaning, alcohol cleaning, acid washing, alcohol cleaning, alkali washing and alcohol cleaning;
clamping wires to be connected at two sides on clamping ends of two clamping mechanisms in a working cavity of wire connecting equipment for magnesium alloy electric arc additive manufacturing, and enabling the wires to extend out of the clamping mechanisms, wherein end faces of the wires at two sides are aligned;
argon is input into the working cavity as a protective gas;
first wire connection: setting a secondary no-load voltage to electrify the clamping end of the clamping mechanism; after the end surfaces of the two wires are completely welded together, upsetting is carried out by using high pressure, current is cut off, and the first wire connection is completed;
and (3) second wire connection: and then loosening the clamping mechanism, readjusting the length of the wire extending out of the clamping mechanism, reducing the secondary no-load voltage, electrifying but not applying upset forging, and finishing wire connection.
Preferably, the organic solvent is used for cleaning, the organic solvent is selected from an alcohol solution containing 50% of acetone, 20% of trichloroethylene and 15% of perchloroethylene in parts by volume, an ultrasonic cleaning device is used for cleaning for 30-60 seconds, the ultrasonic frequency is 40-60 KHz, and then the organic solvent is placed into absolute ethyl alcohol to clean the residual organic cleaning solution.
Preferably, the acid-washing solution is 1-3% sulfuric acid and 1% phthalic acid solution by volume, and the cleaning is carried out in an ultrasonic cleaning device for 5-15 seconds, and the ultrasonic frequency is 40-60 KHz.
Preferably, the solution for alkali washing is 10-15% sodium hydroxide and 5-8% trisodium phosphate solution by volume, and is cleaned in an ultrasonic cleaning device for 10-30 seconds, and the ultrasonic frequency is 40-60 KHz.
The alcohol cleaning is as follows: and (4) putting the mixture into absolute ethyl alcohol to wash away residual organic cleaning solution.
Preferably, before the first connection of the wire, the length of the wire extending out of the clamping mechanism is 2-5 mm, and the flow rate of argon is 5-15L/min.
Preferably, in the first wire connection process, the secondary no-load voltage is 0.8V-2V, and the electrifying time is 0.1-0.3S.
Preferably, in the second wire connection process, the secondary no-load voltage is 0.6V-0.8V, and the electrifying time is 0.1-0.3S.
A wire connecting device for magnesium alloy electric arc additive manufacturing is characterized in that two opposite feeding mechanisms are installed in a working cavity, clamping mechanisms are installed on opposite side faces of the two feeding mechanisms respectively, a displacement sensor is installed on each clamping mechanism, and a real-time monitoring system and a temperature sensor are arranged in the working cavity between the two clamping mechanisms;
the clamping end of the clamping mechanism is provided with an electrode;
the feeding mechanism is driven by a motor and can translate in the working cavity;
the argon protection system is connected with the working cavity through a pipeline with a valve;
wire feeding devices are respectively installed on two sides of the rack, each wire feeding device is provided with a wire coil, wires are wound on the wire coils, the wires extend out of the wire coils and enter the rear working cavity, the wires penetrate through the feeding mechanism and the clamping mechanism, the end parts of the two wires are opposite, and the positions of the end parts of the two wires correspond to the positions of the real-time monitoring system and the temperature sensor;
the two wire feeding devices are both connected with the manual control device, and the manual control device is also provided with a switch connected with an electrode at the clamping end of the clamping device, so that the clamping end of the clamping device can be electrified and electrified parameters can be adjusted.
Preferably, the material of the clamping end of the clamping mechanism is conductive rubber with conductive particles uniformly distributed in the silicone rubber.
Has the beneficial effects that:
(1) Through 6-step cleaning of the part to be connected and the nearby area, impurities on the surface of the wire are thoroughly cleaned, and the wire connection forming quality is improved.
(2) The argon protection system ensures that the connection effect of the wires is not influenced by other gases in the connection process, so that the defects of pores of the formed wires are reduced, and the density is higher.
(3) The invention provides a two-step wire connecting method for wires, so that the wire connecting performance is more excellent; the real-time monitoring system and the temperature sensor are adopted to transmit the data such as the surface forming quality, the temperature field and the like to the manual control device in real time, the technological parameters are changed according to the real-time condition, and the wire connection quality is further improved.
Mounting magnesium alloy wires to be connected on a wire connecting device shown in FIG. 1, adjusting the extension length of the wires by a manual control device, adjusting the end faces of the wires at two ends to be aligned to make the wires contact with each other but not completely contact with each other, and opening an argon valve with the purity of 99.99% until the flow reaches 10L/min; when the wire connecting device for magnesium alloy electric arc additive manufacturing is used for wire connection, an argon protection system is required to introduce argon in advance and close a valve after wires are completely connected, so that no impurity gas enters to influence the wire connection effect in the connection process; and adjusting welding parameters during wire connection by using a manual control device, and setting secondary no-load voltage and electrifying time. Electrifying after pressing the switch, gradually increasing the current density along with the gradual approach of the surface of the wire clamped by the welding electrode, melting the contact part between the wires, overflowing part of molten metal to form an initial butt welding node, flashing and splashing along with the rise of the temperature of a welding area to completely weld two contact surfaces together, rapidly applying upsetting force to the extended wire by the feeding mechanism, and finishing the first wire connection; loosening the clamping mechanism, readjusting the extending length of the wire by using a manual control device, resetting secondary no-load voltage, electrifying but not applying upset forging, and finishing wire connection; the real-time monitoring system and the temperature sensor transmit data to the hand control device in real time.
Drawings
FIG. 1 is a schematic view of a wire connecting apparatus for magnesium alloy arc additive manufacturing;
fig. 2 is an OM diagram of the magnesium alloy structural member obtained in example 1.
In the figure: 1: an argon protection system; 2: a wire feeder; 3: a frame; 4: a real-time monitoring system; 5: a temperature sensor; 6: a displacement sensor; 7: a clamping mechanism; 8: a feeding mechanism; 9: a manual control device; 10: silk material; 11: a working chamber.
Detailed Description
FIG. 1 is a schematic view of a wire connecting device for magnesium alloy arc additive manufacturing according to the present invention.
Two opposite feeding mechanisms 8 are installed in a working cavity 11 of the rack 3, clamping mechanisms 7 are installed on opposite side faces of the two feeding mechanisms 8 respectively, a displacement sensor 5 is installed on each clamping mechanism 7, and a real-time monitoring system 4 and a temperature sensor 5 are arranged between the two clamping mechanisms 7 in the working cavity 11.
The clamping end of the clamping mechanism 7 is provided with an electrode, the clamping end of the clamping mechanism 7 is made of conductive rubber with conductive particles such as silver aluminum and silver uniformly distributed in silicon rubber, and the wire 10 can be prevented from being extruded and deformed too much during clamping.
The feeding mechanism 8 is driven by a motor and can move in the working cavity 11 in a translation way, so that the two clamping mechanisms 7 are driven to relatively approach or leave.
The argon protection system 1 is connected with the working cavity 11 by a pipeline with a valve. And argon (Ar).
The two wire feeding devices 2 are connected with the manual control device 9, the manual control device 9 can manually rotate a wire coil of the wire feeding devices 2 to enable wires 10 to extend out, and the manual control device 9 is further provided with an electrode switch connected with the clamping end of the clamping device 7 to enable the clamping end of the clamping device 7 to be electrified and adjust the electrified parameters.
The invention provides a wire material connecting method for magnesium alloy electric arc additive manufacturing, which comprises the following steps:
the contact surfaces of two strands of wire 10 to be joined were polished flat using 2000 mesh sandpaper.
The portions to be connected and the adjacent areas of the two wire rods 10 are subjected to 6-step cleaning, namely organic solvent cleaning, alcohol cleaning, acid cleaning, alcohol cleaning, alkali cleaning and alcohol cleaning.
Preferably, the organic solvent is selected from alcohol solution of 50% acetone, 20% trichloroethylene and 15% perchloroethylene by volume, and is cleaned for 30-60 seconds in an ultrasonic cleaning device with the frequency of 40-60 KHz.
The acid washing solution is selected from 1 to 3 volume percent of sulfuric acid and 1 volume percent of phthalic acid solution, more preferably 1 volume percent of sulfuric acid and 1 volume percent of phthalic acid solution, and is cleaned for 5 to 15 seconds in an ultrasonic cleaning device with the frequency of 40 to 60KHz.
The alkali washing solution is selected from 10-15% sodium hydroxide and 5-8% trisodium phosphate solution by volume, more preferably 10% sodium hydroxide and 5% trisodium phosphate solution, and is washed in an ultrasonic washing device with the frequency of 40-60 KHz for 10-30 seconds.
The alcohol cleaning is to put the mixture into absolute ethyl alcohol to clean the surface residue.
After cleaning, magnesium alloy wires 10 to be connected are mounted on the wire connecting device shown in FIG. 1, the length of the wires 10 extending out of the clamping mechanism 7 is adjusted through a manual control device 9, the length of the wires 10 extending out of the clamping mechanism 7 is adjusted to be 2-5 mm, more preferably 4mm through data feedback of a displacement sensor 6 on the clamping mechanism 7, the clamping mechanism 7 is controlled to clamp the wires 10, and the feeding mechanism 8 starts to move to adjust the end faces of the wires 10 on two sides to be aligned and close to each other so that the end faces of the wires 10 are in contact with each other but not in complete contact with each other.
The magnesium alloy is easy to oxidize and burn when being welded in an air environment, inert gas or welding flux is needed for protection when wire connection is carried out, and an argon valve with the purity of 99.99 percent is led into the working cavity 11 until the flow rate reaches 10L/min; when the wire connection device for magnesium alloy electric arc additive manufacturing is used for wire connection, the argon protection system 1 is required to introduce argon in advance and close the valve after the wires 10 are completely connected, so that no impurity gas enters to influence the wire connection effect in the connection process.
Because the magnesium alloy has high thermal conductivity, a high-power heat source is needed for welding the magnesium alloy at high speed, otherwise, the overheating of metal in a welding seam and a region close to the welding seam and the growth of crystal grains are easily caused, when the manual control device 9 is used for adjusting the connection parameters of the wire, the secondary no-load voltage is set to be 0.8V-2V, the electrifying time is set to be 0.1-0.3S, more preferably the secondary no-load voltage is 0.85V, and the electrifying time is 0.1S.
After a manual control device 9 is pressed and a switch is switched on, the clamping end of a clamping device 7 is electrified, the current density is gradually increased along with the gradual approach of the end surfaces of wires 10 clamped by the clamping end of the clamping device 7 on two sides, the contact part between the wires 10 starts to melt, meanwhile, part of molten metal overflows to form an initial butt welding node, the two contact surfaces are completely welded together by flashing and splashing along with the rise of the temperature of a welding area, the feeding mechanism 8 rapidly applies upsetting force to the extending wires 10, and the first wire connection is completed.
The clamping mechanism 7 is released and the extended length of the wire 10 is readjusted to 2 to 5mm using the hand control 9, the secondary no-load voltage is reset to 0.6V to 0.8V, more preferably 0.65V, the switch is pressed to be energized without applying upset forging, and the connection of the wire 10 is completed.
The real-time monitoring system 4 and the temperature sensor 5 transmit the data of the surface forming quality, the temperature field and the like to the manual control device 9 in real time so as to change the process parameters according to the real-time situation.
The following detailed description of the wire connection apparatus and method for magnesium alloy arc additive according to the present invention will be given with reference to the accompanying examples, which should not be construed as limiting the scope of the invention.
Example 1:
a1.2 mm thick wire is used as a common wire for electric arc additive manufacturing, and is connected with a high value, and a 1.2mm thick two-section wire 10 is taken as an example for explanation.
The specific operation steps of this embodiment are as follows:
two contact end faces of two pieces of wire 10 to be joined were polished flat using 2000-mesh sandpaper.
Two sections of wire 10 are cleaned, and the cleaning is divided into 6 parts:
s1: cleaning with an organic solvent, preparing 50% acetone, 20% trichloroethylene and 15% perchloroethylene alcohol solution in parts by volume, stirring and mixing for 1 minute at room temperature (25 ℃), then pouring the liquid into an ultrasonic cleaning device, setting the ultrasonic frequency to be 40KHz, and placing the wire 10 in the ultrasonic cleaning device for cleaning for 30 seconds in order to dissolve substances which are insoluble in water but soluble in the organic solvent, such as grease, wax, resin, some colloid substances and the like.
S2: and (3) cleaning with alcohol, namely, putting the wire 10 into an ultrasonic cleaning device filled with absolute ethyl alcohol for cleaning for 30 seconds, and cleaning impurities such as organic solvent and the like in the previous step.
S3: and (2) pickling, namely preparing 1% sulfuric acid and 1% phthalic acid solution in parts by volume, stirring and mixing the solution for 1 minute by using a glass rod at room temperature (25 ℃), then pouring the liquid into an ultrasonic cleaning device, setting the ultrasonic frequency to be 40KHz, and placing the wire 10 in the ultrasonic cleaning device for cleaning for 6 seconds, so as to remove oxides and a small amount of burrs on the surface of the sample and improve the surface smoothness.
S4: and (3) cleaning with alcohol, namely, putting the wire 10 into an ultrasonic cleaning device filled with absolute ethyl alcohol for cleaning for 30 seconds, and cleaning impurities such as acidic substances and the like in the previous step.
S5: and (2) alkaline washing, namely preparing 10% sodium hydroxide +5% trisodium phosphate solution by volume, stirring and mixing the solution by using a glass rod at room temperature (25 ℃) for 1 minute, then pouring the liquid into an ultrasonic cleaning device, setting the ultrasonic frequency to be 40KHz, and cleaning the wire 10 in the ultrasonic cleaning device for 15 seconds so as to further remove residual acidic substances on the sample and neutralize the acidic substances.
S6: and (3) cleaning with alcohol, namely, putting the wire 10 into an ultrasonic cleaning device filled with absolute ethyl alcohol for cleaning for 30 seconds, and cleaning the impurities such as alkaline substances and the like in the previous step.
A magnesium alloy wire 10 with the diameter of 1.2mm is installed on the wire connecting device shown in FIG. 1, the end faces of the wires 10 at two ends are adjusted to be aligned through a manual control device 9 so that the wires 10 are in contact with each other but not completely in contact with each other, the length of the wire 10 extending out of a clamping mechanism 7 is adjusted to be 4mm, and an argon valve with the purity of 99.99% is opened until the flow rate reaches 10L/min.
The manual control device 9 is used for adjusting welding parameters when the wires 10 are connected, the secondary no-load voltage is set to be 0.85V, and the electrifying time is 0.1S. Switch back circular telegram is pressed down, along with both sides by 10 terminal surfaces of the silk material that clamping device 7 exposed core pressed from both sides is tight gradually, current density increases gradually, and contact between the silk material 10 begins to melt, has partial molten metal to spill over simultaneously, forms initial butt welding node, along with the rising of welding zone temperature, the flash with splash makes two contact surfaces weld together completely, 8 rapid to stretching out silk material 10 and exert the upset power, the completion is connected to the silk material for the first time.
The clamping mechanism 7 was released and the extended length of the wire 10 was readjusted to 4mm using the hand control 9, the secondary no-load voltage was set to 0.65V, energization was carried out without applying upset, and the wire connection was completed.
Example 2:
the 2mm thick wire 10 is also a commonly used wire for arc additive manufacturing, and is of high value for joining, and two 2mm thick wires 10 are taken as an example for illustration.
The specific operation steps of this embodiment are as follows:
both contact end faces of two pieces of the wire 10 to be joined were polished flat using 2000-mesh sandpaper.
Two sections of wires 10 are cleaned, and the cleaning is divided into 6 parts:
s1: cleaning with an organic solvent, preparing 50% acetone +20% trichloroethylene +15% perchloroethylene alcoholic solution by volume, stirring and mixing the solution for 1 minute at room temperature (25 ℃), then pouring the solution into an ultrasonic cleaning device, setting the ultrasonic frequency to be 50KHz, and placing the silk 10 in the ultrasonic cleaning device for cleaning for 30 seconds in order to dissolve substances which are insoluble in water but soluble in the organic solvent, such as grease, wax, resin, colloid substances and the like.
S2: and (3) cleaning with alcohol, namely, putting the silk material 10 into an ultrasonic cleaning device filled with alcohol for cleaning for 30 seconds, and cleaning impurities such as organic solvent and the like in the previous step.
S3: acid washing, namely preparing 1.5% sulfuric acid +1% phthalic acid solution in parts by volume, stirring and mixing the solution for 1 minute at room temperature (25 ℃), then pouring the solution into an ultrasonic cleaning device, setting the ultrasonic frequency to be 50KHz, and placing the wire 10 in the ultrasonic cleaning device for cleaning for 8 seconds, so as to remove oxides and a small amount of burrs on the surface of a sample and improve the surface smoothness.
S4: and (3) cleaning with alcohol, namely, placing the wire 10 in an ultrasonic cleaning device filled with alcohol for cleaning for 30 seconds, and cleaning impurities such as acidic substances in the previous step.
S5: and (2) alkaline washing, namely preparing 12% sodium hydroxide +6% trisodium phosphate solution in parts by volume, stirring and mixing the solution for 1 minute by using a glass rod at room temperature (25 ℃), then pouring the liquid into an ultrasonic cleaning device, setting the ultrasonic frequency to be 50KHz, and cleaning the wire 10 in the ultrasonic cleaning device for 25 seconds so as to further remove residual acidic substances on the sample and neutralize the acidic substances.
S6: and (3) cleaning with alcohol, namely, putting the silk material 10 into an ultrasonic cleaning device filled with alcohol for cleaning for 30 seconds, and cleaning the impurities such as alkaline substances and the like in the previous step.
A magnesium alloy wire 10 with the diameter of 2mm is installed on the wire connecting device shown in FIG. 1, the end faces of the wires 10 at two ends are adjusted to be aligned through a manual control device 9 so that the wires 10 are in contact with each other but not completely in contact with each other, the length of the wire 10 extending out of a clamping mechanism 7 is adjusted to be 2.5mm, and an argon valve with the purity of 99.99% is opened until the flow rate reaches 10L/min.
And (3) adjusting welding parameters of the wires 10 during connection by using a manual control device 9, setting the secondary no-load voltage to be 1.2V, and setting the electrifying time to be 0.2S. The switch is pressed and then powered on, the current density is gradually increased along with the gradual approach of the end faces of the wires 10 clamped by the clamping ends of the clamping devices 7 on the two sides, the contact positions between the wires 10 begin to melt, meanwhile, part of molten metal overflows to form an initial butt welding node, the two contact surfaces are completely welded together by flashing and splashing along with the rise of the temperature of a welding area, the feeding mechanism 8 rapidly applies upsetting force to the extending wires 10, and the first wire connection is completed.
The clamping mechanism 7 was released and the length of the wire 10 extending out of the clamping mechanism 7 was readjusted to 2.5mm using the hand control 9, the secondary no-load voltage was set to 0.7V, energization was carried out without upset application, and the wire connection was completed.
The above embodiments are only preferred technical solutions of the present invention, and are not intended to limit the present invention in any way. For those skilled in the art, equivalent structural changes made by the present specification and drawings, or applied directly or indirectly to other related technical fields, are all included in the scope of the present invention.
Claims (10)
1. A wire material connecting method for magnesium alloy electric arc additive manufacturing is characterized in that: the method comprises the following steps:
polishing and flattening two end surfaces of wires to be connected;
then cleaning the surface of the silk material, and respectively carrying out organic solvent cleaning, alcohol cleaning, acid washing, alcohol cleaning, alkali washing and alcohol cleaning;
clamping the wires to be connected on two sides on the clamping ends of two clamping mechanisms in a working cavity of the wire connecting equipment for magnesium alloy electric arc additive manufacturing, and enabling the wires to extend out of the clamping mechanisms, wherein the end surfaces of the wires on the two sides are aligned;
argon is input into the working cavity as protective gas;
first wire connection: setting a secondary no-load voltage to electrify the clamping end of the clamping mechanism; after the end surfaces of the two wires are completely welded together, upsetting is carried out by using high pressure, current is cut off, and the first wire connection is completed;
and (3) second wire connection: and then loosening the clamping mechanism, readjusting the length of the wire extending out of the clamping mechanism, reducing the secondary no-load voltage, electrifying but not applying upset forging, and finishing wire connection.
2. The method for connecting wires for magnesium alloy arc additive manufacturing according to claim 1, wherein: cleaning with an organic solvent, namely selecting an alcohol solution of 50% acetone, 20% trichloroethylene and 15% perchloroethylene by volume part of the organic solvent, cleaning for 30-60 seconds by using an ultrasonic cleaning device, wherein the ultrasonic frequency is 40-60 KHz, and then putting the organic solvent into absolute ethyl alcohol to clean residual organic cleaning solution.
3. The method for connecting wires for magnesium alloy arc additive manufacturing according to claim 1, wherein: the used pickling solution is 1-3% sulfuric acid and 1% phthalic acid solution in volume portion, and is cleaned in an ultrasonic cleaning device for 5-15 seconds, and the ultrasonic frequency is 40-60 KHz.
4. The method for connecting wires for magnesium alloy arc additive manufacturing according to claim 1, wherein: the solution for alkali washing is 10-15% sodium hydroxide and 5-8% trisodium phosphate solution by volume, and is cleaned in an ultrasonic cleaning device for 10-30 seconds, and the ultrasonic frequency is 40-60 KHz.
5. The method for connecting magnesium alloy wires for arc additive manufacturing according to claim 1, wherein: the alcohol cleaning is to put the mixture into absolute ethyl alcohol to clean residual organic cleaning solution.
6. The method for connecting wires for magnesium alloy arc additive manufacturing according to claim 1, wherein: before the first wire connection, the length of the wire extending out of the clamping mechanism is 2-5 mm, and the flow of argon is 5-15L/min.
7. The method for connecting magnesium alloy wires for arc additive manufacturing according to claim 1, wherein: in the first wire connection process, the secondary no-load voltage is 0.8V-2V, and the electrifying time is 0.1-0.3S.
8. The method for connecting wires for magnesium alloy arc additive manufacturing according to claim 1, wherein: in the second wire connection process, the secondary no-load voltage is 0.6V-0.8V, and the electrifying time is 0.1-0.3S.
9. The wire connecting device for magnesium alloy arc additive manufacturing of claim 1, wherein: two opposite feeding mechanisms are arranged in the working cavity, clamping mechanisms are respectively arranged on opposite side surfaces of the two feeding mechanisms, displacement sensors are arranged on the clamping mechanisms, and a real-time monitoring system and a temperature sensor are arranged between the two clamping mechanisms in the working cavity; the clamping end of the clamping mechanism is provided with an electrode; the feeding mechanism is driven by a motor and can translate in the working cavity; the argon protection system is connected with the working cavity through a pipeline with a valve; wire feeding devices are respectively installed on two sides of the rack, each wire feeding device is provided with a wire coil, wires are wound on the wire coils, the wires extend out of the wire coils and enter the rear working cavity, the wires penetrate through the feeding mechanism and the clamping mechanism, the end parts of the two wires are opposite, and the positions of the end parts of the two wires correspond to the positions of the real-time monitoring system and the temperature sensor; the two wire feeding devices are connected with the manual control device, and the manual control device is also provided with a switch connected with an electrode of the clamping end of the clamping device, so that the clamping end of the clamping device can be electrified and electrified parameters can be adjusted.
10. The wire connecting device for magnesium alloy arc additive manufacturing according to claim 9, wherein: the clamping end of the clamping mechanism is made of conductive rubber with conductive particles uniformly distributed in the silicone rubber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210506756.8A CN115401292A (en) | 2022-05-11 | 2022-05-11 | Wire connecting equipment and method for magnesium alloy electric arc additive manufacturing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210506756.8A CN115401292A (en) | 2022-05-11 | 2022-05-11 | Wire connecting equipment and method for magnesium alloy electric arc additive manufacturing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115401292A true CN115401292A (en) | 2022-11-29 |
Family
ID=84157492
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210506756.8A Pending CN115401292A (en) | 2022-05-11 | 2022-05-11 | Wire connecting equipment and method for magnesium alloy electric arc additive manufacturing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115401292A (en) |
Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1257768A (en) * | 1998-02-04 | 2000-06-28 | 乌克兰国家科学学会E·O·派顿电子焊接协会 | Welder for flash butt welding steel rail |
| CN101498634A (en) * | 2008-10-09 | 2009-08-05 | 中国航空工业第一集团公司北京航空材料研究院 | Clamper of cold upsetting tester used for titanium alloy wire materials |
| CN102500899A (en) * | 2011-11-02 | 2012-06-20 | Bpw(梅州）车轴有限公司 | Method for producing axle beam by using preheated flash butt welding |
| CN102935550A (en) * | 2012-11-23 | 2013-02-20 | 贵州安大航空锻造有限责任公司 | Flash welding forming method of iron-based superalloy thin-wall ring member |
| CN103252567A (en) * | 2013-04-23 | 2013-08-21 | 宁夏东方钽业股份有限公司 | Method for welding large-size tantalum strips |
| CN104308346A (en) * | 2014-10-15 | 2015-01-28 | 河南平高电气股份有限公司 | Welding rod connecting piece for TIG (tungsten inert gas) welding and welding rod assembly using welding rod connecting piece |
| CN104400200A (en) * | 2014-11-27 | 2015-03-11 | 广东省工业技术研究院(广州有色金属研究院) | Flash butt welding process for high-pressure boiler pipeline |
| TW201636133A (en) * | 2015-04-01 | 2016-10-16 | Shehkai Prec Co Ltd | Complex tungsten carbide knife manufacturing method using protective gas for welding |
| CN108856983A (en) * | 2018-07-10 | 2018-11-23 | 湖南机电职业技术学院 | A kind of cold metal transfer welding procedure |
| CN208230035U (en) * | 2018-04-10 | 2018-12-14 | 上海振华重工（集团）常州油漆有限公司 | Automatic manufacturing device for water-base epoxy paint |
| CN208626423U (en) * | 2017-09-30 | 2019-03-22 | 武汉资联虹康科技股份有限公司 | A kind of Improvement type ear-clip electrodes |
| CN109986189A (en) * | 2019-05-08 | 2019-07-09 | 西南交通大学 | A kind of technique refining flash welding in rail weld grain |
-
2022
- 2022-05-11 CN CN202210506756.8A patent/CN115401292A/en active Pending
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1257768A (en) * | 1998-02-04 | 2000-06-28 | 乌克兰国家科学学会E·O·派顿电子焊接协会 | Welder for flash butt welding steel rail |
| CN101498634A (en) * | 2008-10-09 | 2009-08-05 | 中国航空工业第一集团公司北京航空材料研究院 | Clamper of cold upsetting tester used for titanium alloy wire materials |
| CN102500899A (en) * | 2011-11-02 | 2012-06-20 | Bpw(梅州）车轴有限公司 | Method for producing axle beam by using preheated flash butt welding |
| CN102935550A (en) * | 2012-11-23 | 2013-02-20 | 贵州安大航空锻造有限责任公司 | Flash welding forming method of iron-based superalloy thin-wall ring member |
| CN103252567A (en) * | 2013-04-23 | 2013-08-21 | 宁夏东方钽业股份有限公司 | Method for welding large-size tantalum strips |
| CN104308346A (en) * | 2014-10-15 | 2015-01-28 | 河南平高电气股份有限公司 | Welding rod connecting piece for TIG (tungsten inert gas) welding and welding rod assembly using welding rod connecting piece |
| CN104400200A (en) * | 2014-11-27 | 2015-03-11 | 广东省工业技术研究院(广州有色金属研究院) | Flash butt welding process for high-pressure boiler pipeline |
| TW201636133A (en) * | 2015-04-01 | 2016-10-16 | Shehkai Prec Co Ltd | Complex tungsten carbide knife manufacturing method using protective gas for welding |
| CN208626423U (en) * | 2017-09-30 | 2019-03-22 | 武汉资联虹康科技股份有限公司 | A kind of Improvement type ear-clip electrodes |
| CN208230035U (en) * | 2018-04-10 | 2018-12-14 | 上海振华重工（集团）常州油漆有限公司 | Automatic manufacturing device for water-base epoxy paint |
| CN108856983A (en) * | 2018-07-10 | 2018-11-23 | 湖南机电职业技术学院 | A kind of cold metal transfer welding procedure |
| CN109986189A (en) * | 2019-05-08 | 2019-07-09 | 西南交通大学 | A kind of technique refining flash welding in rail weld grain |
Non-Patent Citations (1)
| Title |
|---|
| 美国金属学会 主编: "金属手册 焊接与钎焊", 30 November 1984, 机械工业出版社, pages: 865 - 866 * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102513726B (en) | Silver-based flux-cored wire and manufacturing method thereof | |
| CN102554417B (en) | TIG (tungsten inert gas) welding method for auxiliary mechanical vibration droplet transfer and TIG welding device for same | |
| CN101829824B (en) | Compound heating soldering method of precise part resistance heat and supersonic vibration | |
| WO2018036213A1 (en) | Automatic system and implementation method for welding metal part and coaxial cable | |
| CN101557145B (en) | Soldering method of conducting ring of motor rotor | |
| CN201693266U (en) | Resistance heat and ultrasonic vibration compound heating soldering equipment | |
| CN101468419B (en) | Induction and electrical arc composite heat source stud welding method | |
| CN112077409A (en) | Magnetic sleeve and processing technology thereof | |
| CN113351976A (en) | Low-power multi-terminal electrode resistance spot welding process | |
| CN103252567A (en) | Method for welding large-size tantalum strips | |
| CN216065894U (en) | Full-automatic PVC circuit board bonding wire production system | |
| CN115401292A (en) | Wire connecting equipment and method for magnesium alloy electric arc additive manufacturing | |
| CN201529817U (en) | Electric connector automatic welding device | |
| CN201455539U (en) | Device for welding armature of motor | |
| JP2000150287A (en) | Coil manufacturing apparatus and member for coil terminal | |
| CN113172322B (en) | Electric auxiliary diffusion connection method using aluminum lithium alloy gallium as intermediate layer | |
| CN101546943B (en) | Process for welding repair of motor rotor | |
| CN109411378B (en) | Preparation method of copper strip winding type welding column | |
| CN203649633U (en) | Microbeam plasma silver and gold welding apparatus with high frequency and high purity | |
| CN105562873A (en) | Method for welding circuit components | |
| CN220782553U (en) | Copper rod resistance type semi-automatic heat welding machine | |
| CN115090982B (en) | Welding device and method for fixed contact assembly of molded case circuit breaker | |
| JP3869353B2 (en) | Soldering apparatus, electrode and soldering method | |
| CN216065922U (en) | Full-automatic PCB circuit board bonding wire and network transformer bonding wire spot welding mechanism | |
| CN219358247U (en) | Friction-assisted steel rail flash welding equipment |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |