CN117548779A - Arc-free wire additive manufacturing device and method - Google Patents
Arc-free wire additive manufacturing device and method Download PDFInfo
- Publication number
- CN117548779A CN117548779A CN202311836049.6A CN202311836049A CN117548779A CN 117548779 A CN117548779 A CN 117548779A CN 202311836049 A CN202311836049 A CN 202311836049A CN 117548779 A CN117548779 A CN 117548779A
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- Prior art keywords
- cavity
- wire
- induction heating
- welding wire
- insulating nozzle
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- 239000000654 additive Substances 0.000 title claims abstract description 66
- 230000000996 additive effect Effects 0.000 title claims abstract description 66
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 49
- 238000000034 method Methods 0.000 title claims abstract description 16
- 238000010438 heat treatment Methods 0.000 claims abstract description 46
- 238000003466 welding Methods 0.000 claims abstract description 46
- 239000007789 gas Substances 0.000 claims abstract description 39
- 230000006698 induction Effects 0.000 claims abstract description 39
- 230000001681 protective effect Effects 0.000 claims abstract description 26
- 238000002844 melting Methods 0.000 claims abstract description 10
- 230000008018 melting Effects 0.000 claims abstract description 10
- 239000011261 inert gas Substances 0.000 claims abstract description 6
- 239000000463 material Substances 0.000 claims description 5
- 230000003647 oxidation Effects 0.000 claims description 4
- 238000007254 oxidation reaction Methods 0.000 claims description 4
- 230000007704 transition Effects 0.000 claims description 4
- 230000009471 action Effects 0.000 abstract description 2
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 238000007664 blowing Methods 0.000 abstract description 2
- 230000005484 gravity Effects 0.000 abstract description 2
- 238000005516 engineering process Methods 0.000 description 4
- 238000001816 cooling Methods 0.000 description 3
- 238000011161 development Methods 0.000 description 2
- 238000010891 electric arc Methods 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 239000000779 smoke Substances 0.000 description 2
- 230000008646 thermal stress Effects 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 230000035882 stress Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000002912 waste gas Substances 0.000 description 1
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
- B23K9/04—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
- B23K9/32—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
- 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 provides a device and a method for manufacturing an arcless wire additive, comprising an induction heating power supply, an induction heating coil, an insulating nozzle and a protective cover, wherein the insulating nozzle is arranged vertically in the protective cover, a cavity which is penetrated up and down is arranged in the insulating nozzle, one end of a welding wire is connected with a wire feeding system, the other end of the welding wire is inserted into the cavity, and a gas pipeline is communicated with the cavity and is used for introducing protective gas; an induction heating coil is wound outside the insulating nozzle and is electrically connected with an induction heating power supply through a cable; and melting the welding wire through an induction heating coil to form molten drops, and transferring the molten drops onto the additive product below the insulating nozzle, so that the additive product continuously grows. The beneficial effects of the invention are as follows: the arc-free additive manufacturing method is characterized in that a welding wire is melted by a heating system in an inert gas environment, and meanwhile, by means of gas blowing force and the action of molten drop gravity, molten drops are conveyed to an additive product, so that the additive manufacturing process is realized.
Description
Technical Field
The invention relates to the technical field of wire arc additive manufacturing, in particular to an arc-free wire additive manufacturing device and method.
Background
With the continuous development of technology, wire arc additive manufacturing technology is increasingly widely applied in the fields of aviation, aerospace, automobiles, medical treatment and the like. The technology gradually becomes an important processing method in the manufacturing industry by virtue of the advantages of high efficiency, flexibility, energy conservation and the like. First, wire arc additive manufacturing techniques may enable efficient production. By using a high energy arc as a heat source, the wire can be melted quickly and solidified quickly during cooling. The rapid processing mode greatly improves the manufacturing efficiency and can greatly shorten the production period. Second, wire arc additive manufacturing techniques have great flexibility.
Indeed, arc additive manufacturing, while having some advantages, has many drawbacks. Firstly, smoke and waste gas generated in the arc additive manufacturing process can also have certain influence on the environment and human health. Harmful substances are mixed in generated smoke due to uneven heating of the arc, and the arc with high temperature can cause pollution of surrounding air. In addition, thermal stresses generated during arc additive manufacturing can also adversely affect the accuracy and performance of the component. Because the heating and cooling speeds of the electric arc are high, thermal stress is generated inside the component, and the component is deformed or cracked.
In summary, while arc additive manufacturing has some advantages, there are also a number of drawbacks. Therefore, a method for arc-free additive manufacturing needs to be studied to compensate for the gap.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provides an arcless wire material increase manufacturing device and method.
The aim of the invention is achieved by the following technical scheme.
On the one hand, the invention provides a non-arc wire material additive manufacturing device, which comprises an induction heating power supply, an induction heating coil, an insulating nozzle and a protective cover, wherein the insulating nozzle is arranged vertically in the protective cover, a cavity which is penetrated up and down is arranged in the insulating nozzle, one end of a welding wire is connected with a wire feeding system, the other end of the welding wire is inserted into the cavity, and a gas pipeline is communicated with the cavity and is used for introducing protective gas; an induction heating coil is wound outside the insulating nozzle and is electrically connected with an induction heating power supply through a cable; and melting the welding wire through an induction heating coil to form molten drops, and transferring the molten drops onto the additive product below the insulating nozzle, so that the additive product continuously grows.
Preferably, a protection cavity is formed between the inner wall of the protection cover and the insulating nozzle, and protection gas is introduced into the protection cavity, and the flow direction of the protection gas is vertical downward towards the additive product.
Preferably, the outlet of the insulating nozzle is in a conical surface structure and is used for guiding the shielding gas.
Preferably, the cavity is in a cylindrical hollow structure, the other end of the welding wire is inserted into the cavity to at least one third of the height, and the welding wire is collinear with the axis of the cavity and is not in contact with the inner wall of the cavity.
Preferably, the shielding gas is an inert gas, which on the one hand protects the melted droplets against oxidation and on the other hand helps the droplets to quickly transition to the additive product.
In another aspect, the invention provides a method of arcless wire additive manufacturing, comprising the steps of:
1. one end of the welding wire is connected with the wire feeding system, the other end of the welding wire is inserted into the cavity, and the welding wire is collinear with the axis of the cavity and is not contacted with the inner wall of the cavity;
2. placing the additive product below the insulating nozzle, introducing protective gas into the cavity through the gas pipeline, and simultaneously introducing the protective gas into the protective cavity;
3. and starting an induction heating power supply, heating the welding wire through an induction heating coil, melting the welding wire to form molten drops, and transferring the molten drops onto the additive product below the insulating nozzle, and continuously or intermittently feeding the wires to enable the additive product to continuously grow.
The induction heating coil controls the melting speed of the welding wire through different power sources or electric parameters.
The beneficial effects of the invention are as follows:
1. the arc-free additive manufacturing method is characterized in that a welding wire is melted by a heating system in an inert gas environment, and meanwhile, by means of gas blowing force and the action of molten drop gravity, molten drops are conveyed to an additive product, so that the additive manufacturing process is realized.
2. The main feature of the arcless additive manufacturing method is that it is arc free, which gives it many advantages. First, the method is energy-efficient because it does not rely on high energy arcs to melt the metal. Secondly, no electric arc is generated, so that the pollution generated by the method is less, and the manufacturing process is more environment-friendly. Finally, because the heat input amount is low, the method can reduce the problems of deformation, residual stress and the like caused by heat input, and improves the manufacturing precision and stability.
3. The arcless additive manufacturing method not only has lower energy consumption and pollution, but also has higher production efficiency. Because the high-frequency pulse power supply is used, the metal can be melted and solidified rapidly, and the manufacturing process is faster and more efficient. In addition, the method can realize high-precision manufacture and can adapt to various materials and manufacturing requirements.
Drawings
Fig. 1 is a schematic structural view of the present invention.
Reference numerals illustrate: the device comprises an induction heating power supply 1, a cable 2, a gas pipeline 3, a welding wire 4, an induction heating coil 5, an insulating nozzle 6, a cavity 6-1, a molten drop 7, an additive product 8, a protective cover 9 and a protective cavity 9-1.
Detailed Description
The invention will now be described in detail with reference to the accompanying drawings and examples:
as shown in fig. 1, an arcless wire additive manufacturing apparatus includes an induction heating power supply 1, a cable 2, a gas pipe 3, a welding wire 4, an induction heating coil 5, an insulating nozzle 6, a droplet 7, an additive product 8, and a protective cover 9, wherein,
induction heating power supply 1: the apparatus is used to provide energy to provide the heat energy required for melting the wire.
Cable 2: connecting the induction heating coil 5 and the induction heating power supply 1;
gas pipe 3: the air channel is used for introducing air into the insulating nozzle, one end of the air channel is connected with an air source such as an air bottle, the other end of the air channel is connected with the insulating nozzle, and air is input into the insulating nozzle in the additive manufacturing process. The gas is typically an inert gas that protects the melted droplets from oxidation on the one hand and on the other hand helps the droplets to quickly transition to the additive product.
Welding wire 4: is a consumable metal material used in the additive manufacturing process, is melted by an induction heating system to form molten drops, and is transited to an additive product, so that the additive product is continuously grown. One end of the welding wire is connected with a wire feeding system, and the welding wire is automatically fed by a wire feeding wheel mode, and the wire feeding can be continuous or intermittent; the other end of the welding wire 4 is inserted into the cavity 6-1,
protective cover 9: the inside of the protective cover 9 is provided with an insulating nozzle 6 which is vertically arranged, and protective gas (which can be independently supplied and can be used as a gas source together with the gas pipeline 3) is introduced into the protective cover, so that molten drops and additive products can be protected, and the functions of cooling the insulating nozzle and a heating coil are provided.
Induction heating coil 5: is a device for generating heat and is also an energy source for melting welding wires, and the melting speed of the welding wires can be controlled through different power supplies or electric parameters.
Insulating nozzle 6: the insulating nozzle is a welding wire and droplet guiding device made of high-temperature insulating materials, such as high-temperature ceramics and the like. The insulating nozzle 6 is internally provided with a cavity 6-1 which is vertically penetrated, welding wires and shielding gas are led into the device, and an induction heating coil is wound outside the device. Preferably, the outlet of the insulating nozzle 6 is in a conical surface structure for guiding the shielding gas. The cavity 6-1 is in a cylindrical hollow structure, the other end of the welding wire 4 is inserted into the cavity 6-1 to at least one third of the height, and the welding wire 4 is collinear with the axis of the cavity 6-1 and is not in contact with the inner wall of the cavity 6-1. A protection cavity 9-1 is formed between the inner wall of the protection cover 9 and the insulating nozzle 6, and protection gas is introduced into the protection cavity 9-1, and the flow direction of the protection gas is vertical downward towards the additive product 8. The shielding gas is an inert gas, which on the one hand protects the melted droplets 7 against oxidation and on the other hand helps the droplets 7 to quickly transition onto the additive product. The gas pipeline 3 is communicated with the cavity 6-1 and is used for introducing protective gas; an induction heating coil 5 is wound outside the insulating nozzle 6, and the induction heating coil 5 is electrically connected with the induction heating power supply 1 through a cable 2; the welding wire 4 is melted by the induction heating coil 5 to form a droplet 7 and is transferred to the additive product 8 below the insulating nozzle 6, so that the additive product 8 grows continuously.
The invention also provides a method for manufacturing the arcless wire material additive, which comprises the following steps:
1. connecting one end of a welding wire 4 with a wire feeding system, inserting the other end of the welding wire 4 into the cavity 6-1, and enabling the welding wire 4 to be collinear with the axis of the cavity 6-1 and not contact with the inner wall of the cavity 6-1;
2. the additive product 8 is placed below the insulating nozzle 6, and protective gas is introduced into the cavity 6-1 through the gas pipeline 3, and meanwhile, protective gas is introduced into the protective cavity 9-1;
3. the induction heating power supply 1 is started, the welding wire 4 is heated through the induction heating coil 5, the welding wire 4 is melted to form molten drops 7, and the molten drops are transited to the additive product 8 below the insulating nozzle 6, and the additive product 8 is continuously grown by continuous or intermittent wire feeding.
The induction heating coil 5 controls the speed of melting the wire by means of different power sources or electrical parameters.
In a word, the arcless additive manufacturing method is a manufacturing method with great potential, and the advantages of the arcless additive manufacturing method include low energy consumption, less pollution, low heat input, high production efficiency and the like. With the continued development and perfection of technology, it is believed that this approach will play an increasingly important role in future manufacturing fields.
It should be understood that equivalents and modifications to the technical scheme and the inventive concept of the present invention should fall within the scope of the claims appended hereto.
Claims (7)
1. An arcless wire material additive manufacturing device, characterized in that: the welding wire feeding device comprises an induction heating power supply (1), an induction heating coil (5), an insulating nozzle (6) and a protective cover (9), wherein the insulating nozzle (6) is vertically arranged in the protective cover (9), a cavity (6-1) which is vertically communicated is arranged in the insulating nozzle (6), one end of a welding wire (4) is connected with a wire feeding system, the other end of the welding wire (4) is inserted into the cavity (6-1), and a gas pipeline (3) is communicated with the cavity (6-1) and is used for introducing protective gas; an induction heating coil (5) is wound outside the insulating nozzle (6), and the induction heating coil (5) is electrically connected with an induction heating power supply (1) through a cable (2); the welding wire (4) is melted through the induction heating coil (5) to form molten drops (7) and is transited to the additive product (8) below the insulating nozzle (6), so that the additive product (8) is continuously grown.
2. The arcless wire additive manufacturing device of claim 1, wherein: a protection cavity (9-1) is formed between the inner wall of the protection cover (9) and the insulating nozzle (6), protection gas is introduced into the protection cavity (9-1), and the flow direction of the protection gas is vertical downwards towards the additive product (8).
3. The arcless wire additive manufacturing device of claim 2, wherein: the outlet of the insulating nozzle (6) is in a conical surface structure and is used for guiding the shielding gas.
4. The arcless wire additive manufacturing device of claim 3, wherein: the cavity (6-1) is of a cylindrical hollow structure, the other end of the welding wire (4) is inserted into the cavity (6-1) to be at least one third of the height, and the welding wire (4) is collinear with the axis of the cavity (6-1) and is not in contact with the inner wall of the cavity (6-1).
5. The arcless wire additive manufacturing device of claim 4, wherein: the shielding gas is an inert gas, which on the one hand protects the melted droplets (7) against oxidation and on the other hand helps the rapid transition of the droplets (7) onto the additive product.
6. A method of arcless wire additive manufacturing using the arcless wire additive manufacturing apparatus of any one of claims 1-5, characterized by: the method comprises the following steps:
(1) Connecting one end of a welding wire (4) with a wire feeding system, inserting the other end of the welding wire (4) into the cavity (6-1), and enabling the welding wire (4) to be collinear with the axis of the cavity (6-1) and not contact with the inner wall of the cavity (6-1);
(2) Placing the additive product (8) below the insulating nozzle (6), introducing protective gas into the cavity (6-1) through the gas pipeline (3), and introducing the protective gas into the protective cavity (9-1);
(3) And starting an induction heating power supply (1), heating the welding wire (4) through an induction heating coil (5), melting the welding wire (4) to form molten drops (7), and transferring the molten drops to an additive product (8) below the insulating nozzle (6), and continuously or intermittently feeding the wires to enable the additive product (8) to continuously grow.
7. The arcless wire additive manufacturing method of claim 6, wherein: the induction heating coil (5) controls the melting speed of the welding wire through different power sources or electric parameters.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311836049.6A CN117548779A (en) | 2023-12-27 | 2023-12-27 | Arc-free wire additive manufacturing device and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311836049.6A CN117548779A (en) | 2023-12-27 | 2023-12-27 | Arc-free wire additive manufacturing device and method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117548779A true CN117548779A (en) | 2024-02-13 |
Family
ID=89812956
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311836049.6A Pending CN117548779A (en) | 2023-12-27 | 2023-12-27 | Arc-free wire additive manufacturing device and method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117548779A (en) |
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2023
- 2023-12-27 CN CN202311836049.6A patent/CN117548779A/en active Pending
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