CN115476025A - Plasma arc additive method and device for heterogeneous dual-wire in-situ alloying - Google Patents
Plasma arc additive method and device for heterogeneous dual-wire in-situ alloying Download PDFInfo
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- CN115476025A CN115476025A CN202211218271.5A CN202211218271A CN115476025A CN 115476025 A CN115476025 A CN 115476025A CN 202211218271 A CN202211218271 A CN 202211218271A CN 115476025 A CN115476025 A CN 115476025A
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- 239000000654 additive Substances 0.000 title claims abstract description 81
- 230000000996 additive effect Effects 0.000 title claims abstract description 81
- 238000011065 in-situ storage Methods 0.000 title claims abstract description 33
- 238000005275 alloying Methods 0.000 title claims abstract description 28
- 238000000034 method Methods 0.000 title claims abstract description 26
- IJGRMHOSHXDMSA-UHFFFAOYSA-N nitrogen Substances N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 43
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 35
- 229910001240 Maraging steel Inorganic materials 0.000 claims abstract description 34
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 30
- 239000000463 material Substances 0.000 claims abstract description 27
- 239000000956 alloy Substances 0.000 claims abstract description 22
- 229910052742 iron Inorganic materials 0.000 claims abstract description 15
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 14
- 238000002844 melting Methods 0.000 claims abstract description 11
- 230000008018 melting Effects 0.000 claims abstract description 11
- 229910000963 austenitic stainless steel Inorganic materials 0.000 claims description 33
- 230000008021 deposition Effects 0.000 claims description 16
- 239000000758 substrate Substances 0.000 claims description 12
- 239000010410 layer Substances 0.000 claims description 11
- 239000011229 interlayer Substances 0.000 claims description 10
- 238000004519 manufacturing process Methods 0.000 claims description 9
- 238000010891 electric arc Methods 0.000 claims description 8
- 238000013461 design Methods 0.000 claims description 6
- 238000004891 communication Methods 0.000 claims description 5
- 238000005137 deposition process Methods 0.000 claims description 5
- 238000003466 welding Methods 0.000 claims description 5
- 239000000203 mixture Substances 0.000 claims description 4
- 238000005272 metallurgy Methods 0.000 claims 1
- 229910000831 Steel Inorganic materials 0.000 abstract description 4
- 230000001105 regulatory effect Effects 0.000 abstract description 4
- 239000010959 steel Substances 0.000 abstract description 4
- 230000001276 controlling effect Effects 0.000 abstract description 3
- 229910001338 liquidmetal Inorganic materials 0.000 abstract 1
- 230000007547 defect Effects 0.000 description 6
- 239000007789 gas Substances 0.000 description 6
- 238000004458 analytical method Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 239000007769 metal material Substances 0.000 description 4
- 238000002441 X-ray diffraction Methods 0.000 description 3
- 230000009471 action Effects 0.000 description 3
- 229910001566 austenite Inorganic materials 0.000 description 3
- 238000005204 segregation Methods 0.000 description 3
- 238000009864 tensile test Methods 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 238000010894 electron beam technology Methods 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 229910000734 martensite Inorganic materials 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 229910000851 Alloy steel Inorganic materials 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 238000003181 co-melting Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000005242 forging Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
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- 238000006467 substitution reaction Methods 0.000 description 1
- 230000002195 synergetic effect Effects 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
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Classifications
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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
- B23K10/00—Welding or cutting by means of a plasma
-
- 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
- B33Y10/00—Processes of additive manufacturing
-
- 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
Abstract
The invention relates to a heterogeneous dual-wire in-situ alloying plasma arc additive method and a device. When in material increase, the robot control cabinet synchronously controls the material increase power supply to ignite plasma arcs, two heterogeneous phase melting wires are synchronously fed into a molten pool, the two heterogeneous phase melting wires are fully metallurgically solidified in the molten pool to form a base material, and the liquid metal components in the molten pool are regulated and controlled in situ by regulating the wire feeding speed of the two wires, so that the heterogeneous dual-wire in-situ alloying material increase is realized. The invention adopts a heterogeneous double-wire in-situ alloying plasma arc additive method, uses two-phase fusibility wire materials of maraging steel and high-nitrogen austenitic steel, and generates the iron-based alloy with adjustable and controllable components, tissues and properties in situ by controlling the wire feeding speed of the two wire materials, the ultimate tensile strength of the iron-based alloy is adjustable from 450MPa to 950MPa, and the elongation after fracture is adjustable from 15 percent to 56 percent.
Description
Technical Field
The invention belongs to the field of electric arc additive manufacturing, and mainly relates to a heterogeneous dual-wire in-situ alloying plasma arc additive method and device.
Background
The metal material is considered as the most important structural material in the current social development due to the excellent machinability and comprehensive mechanical properties, and with more complicated application scenes and worse service environment of the metal material, higher requirements on the comprehensive properties of the metal material are provided, so that a metal material system needs to be continuously optimized and perfected. The preparation of new materials is completed by a series of modes such as metallurgical melting, casting, forging, heat treatment and the like in the prior art, and the cost is high, the period is long, and the pollution is large, so that a new processing and manufacturing mode is urgently needed to realize the rapid preparation and verification of the new materials.
Disclosure of Invention
The invention aims to provide a plasma arc additive method for heterogeneous dual-wire in-situ alloying, which is used for meeting the manufacturing requirement of a novel iron-based alloy material and realizing the controllability and the reinforcement of alloy components, tissues and properties.
In order to achieve the purpose, the invention adopts the technical scheme that:
a heterogeneous double-wire in-situ alloying plasma arc additive method is characterized in that in-situ alloying is realized by simultaneously melting 18Ni (350) maraging steel wire and HNS6T high-nitrogen austenitic stainless steel wire in a certain mass fraction ratio under non-molten electrode arc; the mass fraction ratio of the 18Ni (350) maraging steel to the HNS6T high-nitrogen austenitic stainless steel is as follows: 9:1, 8:2, 7:3.
Preferably, the HNS6T high nitrogen austenitic stainless steel has a diameter of 1.2mm and the 18Ni (350) maraging steel has a diameter of 1mm.
A heterogeneous dual-wire in-situ alloying plasma arc additive method comprises the following specific steps:
and 6, repeating the step 4 to the step 5 until the size of the additive piece reaches a preset design, and obtaining the iron-based alloy material and structure with adjustable components, tissues and properties.
As a preferable mode, the substrate is preheated by adopting the way of starting arc without feeding wires and leaving air, the preheating temperature is 250 ℃, and the area of a preheating area is larger than the size of a heterogeneous additive piece block.
Preferably, the preset additive current is 50-250A, and the additive voltage is 5-45V.
Preferably, regarding the composition ratio design, the difference between the physical densities of the two wires is small, the densities of the two wires can be approximately considered to be equal in the additive manufacturing, the mass fraction ratio of the wires can be controlled by controlling the volume fraction ratio of different wires according to m = ρ V, and the mass fraction ratio of the wires can be controlled according to V = V f ·t·S(v f Representing the wire feeding speed, t representing the additive time, and S representing the cross-sectional area of the wire) that the volume fraction of the wire is controlled by the wire feeding speed.
Preferably, the interlayer temperature is set to 100 ℃.
Compared with the prior art, the invention has the following advantages: 1. compared with the manufacturing of laser and electron beam powder, the plasma arc melting wire material has the advantages of low manufacturing cost and high material increase efficiency, and simultaneously has the characteristics of high temperature and good bundling property of heat sources like laser and electron beam, and can better control the forming precision, forming quality and mechanical property of the iron-based alloy; 2. the method can realize in-situ melting and solidification of heterogeneous wires, the deposition amount of the wires is regulated and controlled by controlling the feeding speed of the two wires, the composition of the iron-based alloy steel is further regulated and controlled, heterogeneous structural members of the heterogeneous steel with different component proportions are generated by in-situ alloying in an additive manufacturing mode, and controllable alloy performance is realized; 3. the method can fully mix two wires to form a mixed structure with uniformly distributed components, firstly, droplets melted at the ends of the two wires are mixed for the first time under the action of surface tension, electromagnetic force and the like, the droplets are mixed for the second time under the action of stirring force of a molten pool and electric arc oscillation after entering the molten pool, and when the droplets are deposited upwards, the droplets are mixed for the third time under the action of remelting of a subsequent deposition layer, so that the component uniformity of the alloy is fully ensured, and an important reference is provided for surface and performance analysis of a heterogeneous metal mixed interface; 4. compared with a layered overlapping additive heterogeneous material, the alloy material generated in situ by the double-wire common melting pool of the invention obtains the synergistic enhancement effect improvement among multiple elements, and provides a new thought for the heterogeneous additive material aiming at realizing the obdurability matching of the material.
Drawings
FIG. 1 is a schematic structural diagram of a heterogeneous twin-wire in-situ alloying plasma arc additive device.
Figure 2 is 18Ni (350) maraging steel: the HNS6T high nitrogen austenitic stainless steel is an additive block of 9:1.
Figure 3 shows 18Ni (350) maraging steel: the HNS6T high-nitrogen austenitic stainless steel is 9:1 and has a 100-time metallographic structure diagram. Figure 4 is 18Ni (350) maraging steel: the HNS6T high nitrogen austenitic stainless steel is a bulk XRD pattern of 9:1. Figure 5 shows 18Ni (350) maraging steel: the HNS6T high nitrogen austenitic stainless steel is an additive block of 8:2.
Figure 6 shows 18Ni (350) maraging steel: the HNS6T high-nitrogen austenitic stainless steel is 8:2 and has a 100-time metallographic structure diagram. Figure 7 shows 18Ni (350) maraging steel: the HNS6T high nitrogen austenitic stainless steel is a bulk XRD pattern of 8:2. Figure 8 shows 18Ni (350) maraging steel: the HNS6T high-nitrogen austenitic stainless steel is an additive block of 7:3.
Figure 9 is an 18Ni (350) maraging steel: the HNS6T high-nitrogen austenitic stainless steel is 7:3 and has a 100-time metallographic structure diagram.
Figure 10 shows 18Ni (350) maraging steel: the HNS6T high nitrogen austenitic stainless steel is a bulk XRD pattern of 7:3.
Fig. 11 is a true stress-strain curve for three scaled additive parts.
Wherein, 1 is the robot switch board, 2 is infrared thermal imager, 3 is the display, 4 is the plasma vibration material disk rifle body, 5 is the robot, 6 is the plasma switch board, 7 is the vibration material disk power supply, 8 is the double-wire coordination controller, 9 is I and send the silk machine, 10 is II and send the silk machine, 11 is the base plate.
Detailed Description
The following detailed description of the preferred embodiments of the present invention, taken in conjunction with the accompanying drawings, will make the advantages and features of the invention easier to understand by those skilled in the art, and thus will clearly and clearly define the scope of the invention.
The invention provides a heterogeneous twin-wire in-situ alloying plasma arc additive method, which allows different components of an alloy to be rapidly prepared and verified, and allows a material library which can be used for electric arc additive machining to be expanded.
According to the invention, 18Ni (350) maraging steel is taken as a main body, high-nitrogen austenitic stainless steel is properly added to prepare a new material, the new material has certain strength and good plasticity and toughness, the corresponding wire feeding speeds of the maraging steel and the high-nitrogen austenitic steel are calculated and set according to alloy components, two dissimilar wires are melted and solidified in the same molten pool through a plasma arc additive manufacturing technology, and a prototype alloy material and a prototype alloy structure with controllable components, tissues and properties are generated in situ.
A heterogeneous double-wire in-situ alloying plasma arc additive method, in-situ alloying is realized by melting 18Ni (350) maraging steel wire and HNS6T high-nitrogen austenitic stainless steel wire with a certain mass fraction ratio simultaneously under non-melting electrode arc; the mass fraction ratio of the 18Ni (350) maraging steel to the HNS6T high-nitrogen austenitic stainless steel is as follows: 9:1, 8:2, 7:3.
The diameter of HNS6T high-nitrogen austenitic stainless steel is 1.2mm, and the diameter of 18Ni (350) maraging steel is 1mm.
Example 1
18Ni (350) maraging steel was carried out using the method of the invention described above: HNS6T high nitrogen austenitic stainless steel is 9:1, the specific steps of the dual-wire co-molten pool heterogeneous additive are as follows:
and 6, repeating the step 4 to the step 5 until the size of the additive part reaches a preset design, and obtaining the iron-based alloy material and the structure with the ultimate strength of 950MPa and the elongation after fracture of 15%.
As a preferable mode, the wire feeding speed of the HNS6T high-nitrogen austenitic stainless steel wire is calculated to be 0.14m/min, the wire feeding speed of the 18Ni (350) maraging steel wire is 1.86m/min, the welding current is 170A, the arc advancing speed is 18cm/min, the ion gas is 1.2L/min, and the shielding gas is 18L/min.
18Ni high strength steel shown in fig. 2: the HNS6T high-nitrogen austenitic stainless steel is 9: the additive block 1 has good interlayer combination, has no obvious defects of cracks, air holes and the like, and has good integral forming. Fig. 3 and fig. 4 are a 100-fold metallographic structure photograph and an XRD chart of the additive sample, respectively, and it can be seen that the additive sample has a structure mainly including lath martensite and a small amount of austenite, and the structure is dense and free of defects. The tensile strength of the material is 864MPa through a tensile test, the elongation after fracture is 15.8%, and EDS test analysis shows that the internal elements are uniformly distributed and have no obvious segregation phenomenon.
Example 2
18Ni (350) maraging steel was carried out using the method of the invention described above: the HNS6T high-nitrogen austenitic stainless steel is 8:2, the specific steps of the dual-wire co-molten pool heterogeneous additive are as follows:
and 6, repeating the step 4 to the step 5 until the size of the additive part reaches a preset design, and obtaining the iron-based alloy material and structure with the ultimate strength of 550MPa and the elongation rate after fracture of 49%.
As a preferable mode, the wire feeding speed of the HNS6T high-nitrogen austenitic stainless steel wire is calculated to be 0.3m/min, the wire feeding speed of the 18Ni (350) maraging steel wire is 1.7m/min, the welding current is 170A, the arc advancing speed is 18cm/min, the ion gas is 1.2L/min, and the shielding gas is 18L/min.
18Ni (350) maraging steel shown in figure 5: the HNS6T high-nitrogen austenitic stainless steel is 8:2, the interlayer combination is good, obvious defects such as cracks and air holes do not occur, and the integral forming is good. Fig. 6 and fig. 7 are a 100-fold metallographic structure photograph and an XRD chart of the additive sample, respectively, and it can be seen that the additive sample has a main austenite structure and a small amount of martensite, and the structure is dense and has no defects. The tensile strength of the material is 536MPa through a tensile test, the elongation after fracture is 49.1%, and EDS test analysis shows that the internal elements are uniformly distributed and have no obvious segregation phenomenon.
Example 3
18Ni (350) maraging steel was carried out using the method of the invention described above: HNS6T high nitrogen austenitic stainless steel is 7:3, the specific steps of the heterogeneous additive of the double-wire co-melting pool are as follows:
and 6, repeating the step 4 to the step 5 until the size of the additive reaches a preset design, and obtaining the iron-based alloy material and the structure with the ultimate strength of 450MPa and the elongation after fracture of 56%.
As a preferable mode, the wire feeding speed of the HNS6T high-nitrogen austenitic stainless steel wire is calculated to be 0.46m/min, the wire feeding speed of the 18Ni (350) maraging steel wire is 1.54m/min, the welding current is 170A, the arc advancing speed is 18cm/min, the ion gas is 1.2L/min, and the shielding gas is 18L/min.
18Ni (350) maraging steel shown in fig. 8: the HNS6T high-nitrogen austenitic stainless steel is 7:3, the additive block has good interlayer combination, does not have obvious defects of cracks, air holes and the like, and has good integral forming. Fig. 9 and fig. 10 are a metallographic structure photograph and an XRD chart of the additive sample of 100 times, respectively, and it can be seen that the structure of the additive sample is mainly austenite columnar crystals, and the structure is dense and free of defects. The tensile strength of the material is 494MPa through a tensile test, the elongation after fracture is 55.6%, and EDS test analysis shows that the internal elements are uniformly distributed and no obvious segregation phenomenon exists.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. All modifications, substitutions, improvements and the like that come within the spirit of the invention are intended to be within the scope of the invention.
Claims (7)
1. A heterogeneous dual-wire in-situ alloying plasma arc additive method is characterized in that in-situ alloying is realized by simultaneously melting 18Ni350 maraging steel wire and HNS6T high-nitrogen austenitic stainless steel wire in a certain mass fraction ratio under a non-molten electrode arc; the mass fraction ratio of the 18Ni350 maraging steel to the HNS6T high-nitrogen austenitic stainless steel is as follows: 9:1, 8:2 or 7:3.
2. The heterogeneous dual-wire in-situ alloying plasma arc additive method as claimed in claim 1, wherein: the diameter of HNS6T high-nitrogen austenitic stainless steel is 1.2mm, and the diameter of 18Ni350 maraging steel is 1mm.
3. The plasma arc additive method for heterogeneous dual-wire in-situ alloying based on any one of claims 1-2 is characterized by comprising the following specific steps:
step 1, before deposition, adjusting an included angle between two wire guide nozzles and a substrate to be 15-30 degrees, adjusting a wire feeding included angle to be 60-90 degrees, ensuring that two wires are synchronously and directly fed into a central area of a plasma arc, and melting and fully metallurgy the two wires in the same molten pool;
step 2, preheating the substrate according to the size of the actual heterogeneous dual-wire in-situ alloying additive component;
step 3, switching on a power supply, waiting for the communication signal of the whole system to be in place, and setting a forming path program according to the geometric model of the additive part; calculating the mass of two wires required in the deposition process according to the components of the iron-based alloy, formulating a wire feeding speed proportioning scheme of the two wires, and presetting the wire feeding speed proportioning scheme by a double-wire coordination control module; presetting additive current and additive voltage according to the wire feeding speeds of the two wires;
step 4, the robot carries the additive gun body to reach a preset arcing position, after an electric arc is ignited, the 18Ni350 maraging steel wire and the HNS6T high-nitrogen austenitic stainless steel wire are simultaneously sent to an electric arc center to be in the same molten pool, and deposition is carried out according to a preset path;
step 5, after the deposition layer is monitored by an infrared thermal imager to be cooled to a preset interlayer temperature, moving the plasma material increase gun body to a next starting point and beginning to deposit the next layer;
and 6, repeating the step 4 to the step 5 until the size of the additive piece reaches a preset design, and obtaining the iron-based alloy material and structure with adjustable components, tissues and properties.
4. The plasma arc additive method for heterogeneous dual-wire in-situ alloying according to claim 3, wherein the plasma arc additive method comprises the following steps: the substrate is preheated by adopting arc starting and wire feeding-free preheating, the preheating temperature is 250 ℃, and the area of a preheating area is larger than the size of a heterogeneous additive piece block.
5. The plasma arc additive method for heterogeneous dual-wire in-situ alloying according to claim 3, wherein the plasma arc additive method comprises the following steps: in the step 2, the welding current is preset to be 50-250A, and the welding voltage is 5-45V.
6. The plasma arc additive method for heterogeneous dual-wire in-situ alloying according to claim 3, wherein the plasma arc additive method comprises the following steps: in step 2, the composition ratio is designedThe difference of the physical density of the two wires is small, the density of the two wires can be approximately considered to be equal in additive manufacturing, the mass fraction ratio of the two wires is controlled by controlling the volume fraction ratio of different wires according to m = rho V, and the mass fraction ratio of the two wires is controlled according to V = V f ·t·S，v f The wire feeding speed is represented, t represents the additive time, S represents the cross-sectional area of the wire, and the volume fraction of the wire is controlled by the wire feeding speed.
7. The plasma arc additive method for heterogeneous dual-wire in-situ alloying according to claim 3, wherein the plasma arc additive method comprises the following steps: in step 5, the interlayer temperature is preset to be 100 ℃.
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| US20150209889A1 (en) * | 2014-01-24 | 2015-07-30 | Lincoln Global, Inc. | Method and system for additive manufacturing using high energy source and hot-wire |
| CN108067715A (en) * | 2016-11-11 | 2018-05-25 | 南京理工大学 | A kind of double cold automatic increasing material manufacturing method and devices that fill silk of robot plasma arc |
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| CN112139650A (en) * | 2020-09-02 | 2020-12-29 | 南京理工大学 | Method for preparing intermetallic compound component based on additive manufacturing method in situ additive manufacturing |
| CN114799413A (en) * | 2022-03-08 | 2022-07-29 | 南京理工大学 | High-toughness heterogeneous metal in-channel interwoven composite material and electric arc additive manufacturing method thereof |
-
2022
- 2022-10-05 CN CN202211218271.5A patent/CN115476025B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20150209889A1 (en) * | 2014-01-24 | 2015-07-30 | Lincoln Global, Inc. | Method and system for additive manufacturing using high energy source and hot-wire |
| CN108067715A (en) * | 2016-11-11 | 2018-05-25 | 南京理工大学 | A kind of double cold automatic increasing material manufacturing method and devices that fill silk of robot plasma arc |
| CN109693019A (en) * | 2017-10-20 | 2019-04-30 | 南京理工大学 | A method of high-strength high hard stainless steel is prepared using silk material arc-melting |
| CN109926695A (en) * | 2017-12-15 | 2019-06-25 | 南京理工大学 | A kind of robot single machine is the same as the double non-melt pole electrical arc increasing material manufacturing method and apparatus that fill silk of mouth |
| CN109926705A (en) * | 2017-12-15 | 2019-06-25 | 南京理工大学 | A kind of double heated filament increasing material manufacturing method and devices of plasma arc dual power supply for robot |
| CN112139650A (en) * | 2020-09-02 | 2020-12-29 | 南京理工大学 | Method for preparing intermetallic compound component based on additive manufacturing method in situ additive manufacturing |
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| CN115476025B (en) | 2024-03-19 |
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