CN111761171A - Auxiliary welding wire vibration device special for electric arc additive - Google Patents
Auxiliary welding wire vibration device special for electric arc additive Download PDFInfo
- Publication number
- CN111761171A CN111761171A CN201911345371.2A CN201911345371A CN111761171A CN 111761171 A CN111761171 A CN 111761171A CN 201911345371 A CN201911345371 A CN 201911345371A CN 111761171 A CN111761171 A CN 111761171A
- Authority
- CN
- China
- Prior art keywords
- fixing device
- welding wire
- vibration
- vibrating
- arc
- 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
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
- B23K9/12—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
- B23K9/04—Welding for other purposes than joining, e.g. built-up welding
-
- 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
- B23K9/124—Circuits or methods for feeding welding wire
- B23K9/125—Feeding of electrodes
-
- 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
- B33Y40/00—Auxiliary operations or equipment, e.g. for material handling
Abstract
The invention relates to an auxiliary welding wire vibrating device special for arc additive manufacturing, which comprises a vibrating power supply part, a fixing device part, a micro polarization motor part and a control panel part. The miniature vibration motor is connected with a vibration power supply through a transmission connecting rod, and the vibration power supply is fixed on the fixing device through threaded connection; the invention transmits simple harmonic vibration energy to the end part of the welding wire through the micro-polarization motor, and the vibration of the end part of the welding wire can play a role in stirring a molten pool in the electric arc additive process, thereby being beneficial to the escape of bubbles in the molten pool to reduce the pore defects of an additive structure and playing a role in refining grains. In addition, when the aluminum-based composite material is prepared by using electric arc additive, the end part of the welding wire vibrates to cause the flow of a molten pool, which is beneficial to improving the wettability between molten metal and ceramic particles, and the particles can be uniformly dispersed and distributed in the molten pool, so that the effects of fine grain strengthening and dispersion strengthening are achieved, and the ultimate tensile strength of the material is effectively improved.
Description
Technical Field
The invention relates to the field of electric arc additive, in particular to the field of improving the air hole defect and tissue regulation of electric arc additive.
Background
The arc additive manufacturing technology is a technology for additive manufacturing by taking an arc as a heat source, the arc generates heat to melt welding wires and then carries out layer-by-layer accumulation forming, however, due to the influence of physical characteristics of the layer-by-layer accumulation forming, the high cooling rate causes gas in a molten pool to be not fully dissipated so as to remain in a deposited layer to form a pore defect, so that the overall performance of the material is damaged and the pore defect is likely to become a crack source for material fracture. In addition, in the process of preparing the composite material by adding the ceramic nanoparticles and the arc additive, the added particles are easy to agglomerate in a molten pool, so that nucleation particles in the molten pool are reduced, the refining effect is poor, and more importantly, after the particles are added, the interlayer wettability is poor, so that the additive forming is influenced. Therefore, it is also a considerable problem how to change the wettability between the added particles and the molten metal. Therefore, in order to accelerate the dispersion of particles in the molten pool and reduce the additive porosity, it is necessary to improve the fluidity of the molten pool. Therefore, the invention designs a device for assisting the vibration of the wire feeding mechanism, so that the vibration of the wire feeding mechanism generates vibration energy, and the energy is transferred into a molten pool through the end part of the welding wire, thereby achieving the stirring effect and simultaneously improving the wettability between particles and molten metal.
Disclosure of Invention
In view of this, the present invention provides an auxiliary welding wire vibration device for arc additive to solve the problems in the prior art.
According to a first aspect of the present invention, there is provided an auxiliary welding wire vibration device dedicated for arc additive, comprising a vibration power supply portion, a fixture portion, a micro vibration motor portion, and a control panel portion.
Preferably, the auxiliary welding wire vibration device special for arc additive manufacturing is characterized in that the vibration power supply is fixed on the fixing device through threaded connection.
Preferably, the auxiliary welding wire vibrating device special for arc additive is characterized in that the fixing device is assembled on the wire feeder through interference fit and can adjust the position of the wire feeder in a sliding mode, and the fixing device can be further fixed through threaded connection after the position is determined.
Preferably, the auxiliary welding wire vibrating device special for arc additive manufacturing is characterized in that the fixing device part is a cylinder, two symmetrically-arranged threaded holes are formed in the side wall of the fixing device part for threaded connection, the cross section of one side of the fixing device part is rectangular for better contact with a vibration power supply so that vibration can be better transmitted to the wire feeding mechanism, and the threaded holes are reserved at the front end part of the fixing device part for threaded connection with the vibration power supply.
Preferably, the auxiliary welding wire vibration device special for arc additive is characterized in that a power switch and a controller for adjusting vibration frequency in a sliding mode are arranged on a control panel.
Preferably, the auxiliary welding wire vibration device special for arc additive manufacturing is characterized in that the bottom of the vibration power supply is a rectangular plane, and a threaded hole is reserved at the front end of the vibration power supply and used for being in threaded connection with the fixing device.
According to a second aspect of the invention, a method for using an auxiliary welding wire vibration device special for arc additive is provided, which comprises the following steps.
The method comprises the following steps: before preparing to perform electric arc material increase, the fixing device is firstly assembled on the wire feeding mechanism through interference fit, and is fixed on the wire feeding mechanism through threaded connection after being adjusted to a proper position in a sliding mode.
Step two: after the fixing device is assembled, the vibration power supply is fixed on the fixing device through threaded connection, a battery is assembled, and whether the battery can be started normally is checked.
Step three: and after the preparation of other arc material increase work is finished, opening a switch of a control panel on the vibration power supply to vibrate the switch, and sliding a controller for adjusting the frequency to obtain the proper vibration frequency.
Step four: starting an arc striking button, striking an arc, starting electric arc material increase, wherein a vibrating wire feeding mechanism plays a role in stirring a molten pool, the molten pool is observed to show that the fluidity of the molten pool is obviously enhanced, and the wettability between particles and wires is effectively improved due to the enhancement of the fluidity of the molten pool, so that the wires can be obviously observed to be directly spread and covered on the surfaces of the particles after being melted, and the forming is good.
Step five: and (4) extinguishing the arc after the electric arc material increase is finished, closing the switch to stop vibrating after a short period of time, removing the vibration power supply, removing the fixing device, and finishing the electric arc material increase process.
The auxiliary welding wire vibrating device and method special for arc additive increase provided by the invention have the advantages that simple harmonic vibration energy generated by the micro-vibration motor is transmitted to the end part of the welding wire by utilizing the vibration transmission principle, and the effect of stirring a molten pool is achieved in the process of arc additive increase. The stirring action enables the gas at the bottom of the molten pool to quickly escape from the molten pool, and the effect of reducing the void ratio is achieved. Meanwhile, in the process of preparing the composite material by adding the electric arc additive of the particles, the stirring effect of the molten pool can avoid the agglomeration of the particles, so that the particles are uniformly and dispersedly distributed in the molten pool, the nucleation particles are played in the molten pool to facilitate the nucleation, the uniformly and dispersedly distributed particles after the molten pool is solidified play a role in fine grain strengthening and dispersion strengthening, the tensile strength and the hardness of the material are obviously improved, and the performance of the material is obviously improved. More importantly, the action of stirring the molten pool improves the wettability between the added particles and the deposited metal from the aspect of fluid dynamics, and further, the filament materials can be uniformly spread and cover the surface of the particles after being melted in the additive process, so that the well-formed composite material is obtained.
Drawings
The above and other objects, features and advantages of the present invention will become more apparent from the following description of examples thereof with reference to the accompanying drawings, in which.
Fig. 1 is an isometric view of an auxiliary welding wire vibrating device special for arc additive manufacturing, and fig. 2 is a three-view of the auxiliary welding wire vibrating device special for arc additive manufacturing.
Fig. 3 is an isometric view of the assembled auxiliary welding wire vibration device for the arc additive, and fig. 4 is a three-view of the assembled auxiliary welding wire vibration device for the arc additive.
Detailed Description
Various embodiments of the present invention will be described in greater detail below with reference to the drawings, wherein like elements are designated by like or similar reference numerals throughout the several views. For purposes of clarity, the drawings have some parts not necessarily been drawn to scale; in addition, in the following detailed description of the present invention, specific street sections are described in detail, so that those skilled in the art can fully understand the present invention without the detailed description, and well-known methods, procedures, flows and elements are not described in detail in order to avoid obscuring the essence of the present invention.
As shown in fig. 1 and 2, the auxiliary welding wire vibration device specially used for arc additive provided by the invention comprises a vibration power supply part 301, a fixing device part 303, a micro vibration motor part 304 and a control panel part 302; after the auxiliary welding wire vibration device special for arc additive manufacturing is assembled on an actually used arc additive manufacturing device, shown in fig. 3 and 4, 100 provides necessary heat input for arc additive manufacturing by a welding gun used in the arc additive manufacturing process to melt wires, 200 is a base material in the arc additive manufacturing, arc additive manufacturing is performed on the base material, 300 is the auxiliary welding wire vibration device, and 400 is a wire feeding mechanism to provide necessary wires for arc additive manufacturing. The auxiliary welding wire vibration device 300 is sleeved on the wire feeding mechanism through interference fit, the auxiliary welding wire vibration device can slide on the wire feeding mechanism within a certain range, after the position of the auxiliary welding wire vibration device is determined, the auxiliary welding wire vibration device is fixed with the wire feeding mechanism through a threaded hole 303 in a fixing device, the vibration power supply 301 is fixed on the fixing device 303 through threaded connection of a threaded hole in the front end of the vibration power supply, the micro vibration motor 304 is directly connected with the vibration power supply 301 through a transmission connecting rod, and the control panel 302 is directly designed on the rear side of the vibration power supply and used for directly controlling the auxiliary welding wire vibration. In the arc additive process of particle addition, before the additive process is started, firstly, a switch on a control panel 302 on the auxiliary welding wire vibrating device 300 is turned on, a controller on the control panel is adjusted to obtain a proper vibration frequency, and then the positions of the wire feeder 400 and the welding gun 100 are adjusted, so that the arc starting arc additive process can be performed. Due to the effect of the transmission connecting rod and the effect of the interference fit connection of various threaded connections, the vibration of the micro vibration motor 304 can be stably transmitted to the wire feeding mechanism 400 to drive the welding wire to vibrate, so that the welding wire can play a role in stirring a molten pool in the electric arc material increase process, and gas in the molten pool can quickly escape in the electric arc material increase process to reduce the defect of pores after forming; in addition, the hydrodynamic action brought by the stirring molten pool is beneficial to improving the wettability between the wire feeding mechanism 400 and the additive particles, so that the wire can be better uniformly spread and clad on the surface of the additive particles after being melted, and a well-formed electric arc additive assembly is obtained. Simultaneously, the molten pool stirring effect that the welding wire vibration produced makes the granule that adds more evenly distribute in the molten pool and play the effect of nucleation position for the electric arc vibration material disk shape the grain size more tiny to the effect that the formation structure produced fine grain and strengthen, in addition the granule distributes in the molten pool and also can play the effect of dispersion strengthening after cooling takes shape, these two kinds of strengthening mechanism make the electric arc vibration material disk produced the composite material who adds the granule and have splendid performance, compare in the base metal tensile strength, performance such as hardness all have had the promotion that the effect is showing.
The invention provides an auxiliary welding wire vibrating device special for electric arc additive manufacturing, which comprises: before preparing to perform electric arc material increase, firstly, assembling the fixing device 303 on the wire feeder 400 through interference fit, adjusting the fixing device to a proper position in a sliding manner, and then fixing the fixing device on the wire feeder through threaded connection; after the fixing device 303 is assembled, the vibration power supply 301 is fixed on the fixing device 303 through threaded connection, a battery is installed, and whether the micro vibration motor 304 can be started normally is checked; after the preparation of other arc additive materials is finished, a switch of a control panel 302 on a vibration power supply is turned on to vibrate the switch, and a controller for adjusting the frequency is slid to obtain a proper vibration frequency; starting an arc striking button, striking an arc, starting arc material increase, and the vibrating wire feeding mechanism 400 plays a role in stirring a molten pool; and (3) extinguishing the arc after the electric arc additive manufacturing is finished, closing the switch to stop vibrating after a short period of time, removing the vibration power supply 301, removing the fixing device 303, and finishing the electric arc additive manufacturing process.
Finally, it should be noted that: obviously, the above examples are only for clearly illustrating the present invention and are not to be construed as limiting the embodiments; it will be apparent to those skilled in the art that other variations and modifications may be made in the foregoing disclosure, without necessarily requiring or implying an exhaustive enumeration of all such embodiments, and all such variations and modifications may be apparent from the foregoing description and are intended to be within the scope of the present invention.
Claims (8)
1. The auxiliary welding wire vibration device special for arc additive is characterized by comprising a vibration power supply part, a fixing device part, a micro polarization motor part and a control panel part.
2. The auxiliary welding wire vibrating device special for arc additive as claimed in claim 1, wherein the micro vibrating motor is directly connected with the vibrating power source through a transmission link, and the control panel is designed on one side of the vibrating power source.
3. The auxiliary welding wire vibrating device special for arc additive as claimed in claim 1, wherein the vibrating power source is fixed on the fixing device by a screw connection.
4. The auxiliary welding wire vibrating device for arc additive manufacturing according to claim 1, wherein the fixing device is assembled on the wire feeder by interference fit and is capable of adjusting the position of the wire feeder in a sliding manner, and the fixing device can be further fixed by a screw connection after the position is determined.
5. The auxiliary welding wire vibrating device special for arc additive according to claim 1, wherein the fixing device part is a cylinder, two symmetrically arranged threaded holes are formed in the side wall of the fixing device part for threaded connection, the cross section of one side of the fixing device part is rectangular, and the threaded holes are reserved at the front end part of the fixing device part for threaded connection with a vibrating power supply.
6. The auxiliary welding wire vibrating device for arc additive manufacturing according to claim 1, wherein a power switch and a controller for adjusting the vibration frequency are disposed on the control panel.
7. The auxiliary welding wire vibrating device special for arc additive as claimed in claim 1, wherein the bottom of the vibrating power supply is a rectangular plane, and a threaded hole is reserved at the front end for threaded connection with the fixing device.
8. The method for using the auxiliary welding wire vibrating device special for arc additive of claim 1 is characterized by comprising the following steps:
the method comprises the following steps: before electric arc material increase, firstly, assembling a fixing device on a wire feeding mechanism through interference fit, adjusting the fixing device to a proper position in a sliding manner, and then fixing the fixing device on the wire feeding mechanism through threaded connection;
step two: after the fixing device is assembled, the vibration power supply is fixed on the fixing device through threaded connection, a battery is assembled, and whether the fixing device can be started normally is checked;
step three: after the preparation of other arc material increase work is finished, a switch of a control panel on a vibration power supply is turned on to vibrate the control panel, and a controller for adjusting the frequency is slid to obtain a proper vibration frequency;
step four: starting an arc striking button to strike an arc, starting arc material increase, and transmitting simple harmonic vibration energy into a molten pool through the end part of a welding wire by a vibration device so as to play a role in stirring the molten pool;
step five: and (4) extinguishing the arc after the electric arc material increase is finished, closing the switch to stop vibrating after a short period of time, removing the vibration power supply, removing the fixing device, and finishing the electric arc material increase process.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911345371.2A CN111761171A (en) | 2019-12-24 | 2019-12-24 | Auxiliary welding wire vibration device special for electric arc additive |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911345371.2A CN111761171A (en) | 2019-12-24 | 2019-12-24 | Auxiliary welding wire vibration device special for electric arc additive |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111761171A true CN111761171A (en) | 2020-10-13 |
Family
ID=72718063
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911345371.2A Pending CN111761171A (en) | 2019-12-24 | 2019-12-24 | Auxiliary welding wire vibration device special for electric arc additive |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111761171A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114799439A (en) * | 2022-06-07 | 2022-07-29 | 浙江机电职业技术学院 | Auxiliary welding wire vibrating device for electric arc additive |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3845271A (en) * | 1972-11-30 | 1974-10-29 | Nippon Kokan Kk | Oscillating type automatic arc welding apparatus |
| JPH02280967A (en) * | 1989-04-20 | 1990-11-16 | Sanyo Denyoushiya:Kk | Wire conduit |
| CN101239415A (en) * | 2008-03-12 | 2008-08-13 | 哈尔滨工业大学 | Ultrasonic vibration and welding stick feeding system compound welding method and device thereof |
| CN102554417A (en) * | 2012-01-18 | 2012-07-11 | 哈尔滨工业大学 | TIG (tungsten inert gas) welding method for auxiliary mechanical vibration droplet transfer and TIG welding device for same |
| CN104668690A (en) * | 2015-02-09 | 2015-06-03 | 北京科技大学 | Device and method for assisting fluxless brazing by ultrasonic vibrating welding wire |
| CN109807418A (en) * | 2019-03-24 | 2019-05-28 | 北京工业大学 | A kind of high-frequency vibration laser is from fuse welding method |
| CN209681394U (en) * | 2019-01-11 | 2019-11-26 | 兰州理工大学 | A kind of TIG weldering welding gun of linear vibration motor auxiliary |
-
2019
- 2019-12-24 CN CN201911345371.2A patent/CN111761171A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3845271A (en) * | 1972-11-30 | 1974-10-29 | Nippon Kokan Kk | Oscillating type automatic arc welding apparatus |
| JPH02280967A (en) * | 1989-04-20 | 1990-11-16 | Sanyo Denyoushiya:Kk | Wire conduit |
| CN101239415A (en) * | 2008-03-12 | 2008-08-13 | 哈尔滨工业大学 | Ultrasonic vibration and welding stick feeding system compound welding method and device thereof |
| CN102554417A (en) * | 2012-01-18 | 2012-07-11 | 哈尔滨工业大学 | TIG (tungsten inert gas) welding method for auxiliary mechanical vibration droplet transfer and TIG welding device for same |
| CN104668690A (en) * | 2015-02-09 | 2015-06-03 | 北京科技大学 | Device and method for assisting fluxless brazing by ultrasonic vibrating welding wire |
| CN209681394U (en) * | 2019-01-11 | 2019-11-26 | 兰州理工大学 | A kind of TIG weldering welding gun of linear vibration motor auxiliary |
| CN109807418A (en) * | 2019-03-24 | 2019-05-28 | 北京工业大学 | A kind of high-frequency vibration laser is from fuse welding method |
Non-Patent Citations (1)
| Title |
|---|
| 范阳阳等: "基于超声振动的304不锈钢TIG焊接", 《焊接学报》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114799439A (en) * | 2022-06-07 | 2022-07-29 | 浙江机电职业技术学院 | Auxiliary welding wire vibrating device for electric arc additive |
| CN114799439B (en) * | 2022-06-07 | 2023-06-20 | 浙江机电职业技术学院 | Auxiliary welding wire vibrating device for arc material increase |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109317661B (en) | TiN/Al-based material composite powder and laser 3D printing forming method thereof | |
| CN113634763B (en) | Coaxial wire feeding laser additive manufacturing method combined with ultrasonic impact | |
| CN111761171A (en) | Auxiliary welding wire vibration device special for electric arc additive | |
| CN101850462A (en) | Ultrasonic welding method of Al/Ti dissimilar metal TIG (Tungsten Inert Gas) electrical arc micro-melting brazing and following welding | |
| WO2020063620A1 (en) | Droplet-by-droplet centrifugal atomization manner-based device and method for efficiently preparing low-melting-point spherical metal powders | |
| CN1877043A (en) | Preform for manufacturing a material having a plurality of voids and methods of making same | |
| CN1310724C (en) | Rheoforming apparatus | |
| CN112974803B (en) | Method for reducing porosity of laser selective melting forming component | |
| JPH05192761A (en) | Method of manufacturing part with abrasion proof face | |
| CN103498090A (en) | As cast condition large gradient material preparation method and utilization device thereof | |
| WO2007021402A3 (en) | Silica sols with controlled minimum particle size and preparation thereof | |
| CN109554705A (en) | A kind of laser melting coating TiC/ cobalt-base alloys composite coating microstructure and property regulation method | |
| CN104384685A (en) | Electrode or filling material push-pull micro-vibration auxiliary arc welding device and method | |
| CN113579479A (en) | Ultrasonic coupling electromagnetic stirring assisted laser additive manufacturing method | |
| CN104532046B (en) | Method for preparing nano-aluminum-nitride reinforced aluminum-based composite semi-solid slurry based on ultrasonic and mechanical vibration combination | |
| Paul et al. | Analytical review of reinforcement addition techniques during ultrasonic casting of metal matrix composites | |
| CN104532031B (en) | Method for preparing nano-ceramic particle reinforced aluminum-based composite material | |
| CN114054775A (en) | Aging strengthening type nickel-based superalloy 3D printing process and manufactured 3D printing piece | |
| CN1644723A (en) | Production of foamed aluminosilicate alloy material with controllable density and aperture | |
| JP2007273206A (en) | High-purity carbon electrode for arc melting and its application | |
| JP4601489B2 (en) | Vibration solidification casting mold and casting method thereof | |
| CN111761225A (en) | All-position equal-strength aqueous medium ultrasonic auxiliary arc-laser additive device | |
| CN116083901A (en) | Reinforced phase distribution state adjustable laser cladding composite layer and preparation method thereof | |
| US11473167B2 (en) | Automated device for degassing and/or foaming of metals and their alloys and process thereof | |
| JPH01180764A (en) | Method for continuously casting high clean steel |
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 | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20201013 |