CN115415641A - Single-consumable electrode electric arc cladding material increasing system and method - Google Patents
Single-consumable electrode electric arc cladding material increasing system and method Download PDFInfo
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- CN115415641A CN115415641A CN202211208078.3A CN202211208078A CN115415641A CN 115415641 A CN115415641 A CN 115415641A CN 202211208078 A CN202211208078 A CN 202211208078A CN 115415641 A CN115415641 A CN 115415641A
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- 239000000463 material Substances 0.000 title claims abstract description 50
- 238000005253 cladding Methods 0.000 title claims abstract description 37
- 238000010891 electric arc Methods 0.000 title claims abstract description 33
- 238000000034 method Methods 0.000 title claims abstract description 22
- 238000003466 welding Methods 0.000 claims abstract description 124
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 claims abstract description 80
- 229910052786 argon Inorganic materials 0.000 claims abstract description 40
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 claims abstract description 34
- 229910052721 tungsten Inorganic materials 0.000 claims abstract description 34
- 239000010937 tungsten Substances 0.000 claims abstract description 34
- 229910052751 metal Inorganic materials 0.000 claims abstract description 29
- 239000002184 metal Substances 0.000 claims abstract description 29
- 239000007789 gas Substances 0.000 claims abstract description 23
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 19
- 239000007788 liquid Substances 0.000 claims abstract description 17
- 238000002844 melting Methods 0.000 claims abstract description 16
- 230000008018 melting Effects 0.000 claims abstract description 16
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 9
- 238000000889 atomisation Methods 0.000 claims abstract description 3
- 239000000654 additive Substances 0.000 claims description 15
- 230000000996 additive effect Effects 0.000 claims description 15
- 239000007787 solid Substances 0.000 claims description 4
- 238000001816 cooling Methods 0.000 abstract description 3
- 239000000758 substrate Substances 0.000 abstract description 3
- 238000004519 manufacturing process Methods 0.000 description 6
- 230000008569 process Effects 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 4
- 230000008439 repair process Effects 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 238000010146 3D printing Methods 0.000 description 1
- 244000178993 Brassica juncea Species 0.000 description 1
- 235000011332 Brassica juncea Nutrition 0.000 description 1
- 235000014700 Brassica juncea var napiformis Nutrition 0.000 description 1
- 238000003723 Smelting Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 229910001873 dinitrogen Inorganic materials 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 229910001338 liquidmetal Inorganic materials 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000008520 organization Effects 0.000 description 1
- 238000009718 spray deposition Methods 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Images
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
- 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
- B23K9/16—Arc welding or cutting making use of shielding gas
- B23K9/173—Arc welding or cutting making use of shielding gas and of a consumable electrode
-
- 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
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Plasma & Fusion (AREA)
- Mechanical Engineering (AREA)
- Arc Welding In General (AREA)
Abstract
The invention discloses a single consumable electrode arc cladding material increase system and a method, wherein the system comprises: the device comprises an argon arc welding power supply, a tungsten electrode, a welding gun, an atomizer and an air supply system; a welding wire is arranged in the welding gun; the tungsten electrode is connected with the positive electrode of an argon arc welding power supply, and the welding gun is connected with the negative electrode of the power supply; after the power supply is switched on, a stable electric arc is formed between the tungsten electrode and the welding gun and is used for melting the welding wire to form metal liquid drops; the gas supply system continuously supplies high-pressure gas to the atomizer, and an atomization cone is formed below the atomizer; the metal droplets are deposited on the substrate after dropping through the atomizing cone. When the welding gun is in work, after a tungsten electrode is close to the welding gun, a loop is formed and an electric arc is formed, the welding wire is heated and melted, the welding wire in the welding gun is continuously fed, metal liquid drops are sucked into the atomizer due to negative pressure caused by high-speed flowing gas in the atomizer, the gas supply system conveys high-pressure nitrogen to the atomizer to form an atomizing cone, the liquid drop flow passes through the atomizing cone and then is deposited in a working area, and a part is formed after cooling, so that the function of electric arc cladding and material increasing is realized.
Description
Technical Field
The invention relates to the technical field of metal cladding and material increasing, in particular to an electric arc cladding and material increasing system with a single melting electrode and an electric arc cladding and material increasing method with a single melting electrode.
Background
In recent years, more and more attention has been paid to a Wire and Arc Additive Manufacturing (WAAM) technology, which is developed mainly based on welding technologies such as TIG, MIG, SAW and the like, in which an Arc is used as an energy-carrying beam to Manufacture a metal solid member in a layer-by-layer overlaying manner, and a formed part is composed of a full-weld joint, has uniform chemical components, high density, good metallurgical bonding performance and good mechanical performance. The open forming environment has no limit to the size of a formed part, the forming speed can reach kilogram per hour, but the surface fluctuation of parts manufactured by the electric arc additive manufacturing is large, and the surface quality of the formed part is low. Therefore, the additive repair technology using the electric arc as a heat source is a low-cost and rapid additive repair technology with great potential.
However, the existing arc 3D printing additive method generally has the following problems: (1) The high-temperature liquid metal is in transition in a form of dropping in a molten pool of the base material, and the existence of the molten pool in the base material can generate serious heat influence on the matrix and the solidified area; (2) In the traditional electric arc cladding material increase process, a base material must be connected with one pole of a power supply, so that a large current must pass through the base material in the working process, and the medium-power and low-power electrical components in the base material can be burnt; (3) The mechanical properties of the arc additive forming component are often not as good as those of the traditional forming method; (4) Need supporting smelting furnace and metal Brassica juncea ingot to obtain metal liquid, the structure is heavy, and the application place is inflexible. The above problems are also important factors limiting the electric arc cladding additive manufacturing nowadays.
Disclosure of Invention
The invention aims to provide a single-consumable electrode arc cladding material increasing system and a single-consumable electrode arc cladding material increasing method aiming at the problems in the prior art.
The invention is realized by the following technical scheme:
a single consumable electrode arc cladding additive system, comprising: the argon arc welding device comprises an argon arc welding power supply, a tungsten electrode, a welding gun, an atomizer and an air supply system; a welding wire is arranged in the welding gun; the tungsten electrode is connected with the positive electrode of the argon arc welding power supply, and the welding gun is connected with the negative electrode of the argon arc welding power supply; after the argon arc welding power supply is switched on, a stable electric arc is formed between the tungsten electrode and the welding gun and is used for melting the welding wire in the welding gun to form metal liquid drops; the gas supply system is used for continuously supplying high-pressure gas to the atomizer and forming an atomization cone below the atomizer; and the metal droplets are deposited on the base material through the atomizing cone after dropping.
Further, an electric arc cladding material increase system of single consumable electrode: the argon arc welding power supply is a direct current power supply.
Specifically, in order to ensure the service life of the tungsten electrode, the argon arc welding power supply needs to be a direct current power supply.
Further, an electric arc cladding material increase system of single consumable electrode: the welding gun is an MIG welding gun.
Further, an electric arc cladding material increasing system with a single melting electrode comprises: and the melting position of the welding wire is arranged in a negative pressure area formed by the high-pressure gas.
Further, an electric arc cladding material increasing system with a single melting electrode comprises: the high-pressure gas is nitrogen.
Further, an electric arc cladding material increasing system with a single melting electrode comprises: and the tungsten electrode and the welding gun are protected by argon.
The method for the single-consumable electrode arc cladding material increase is characterized in that the method uses the single-consumable electrode arc cladding material increase system, and the method comprises the following steps:
s1, connecting the tungsten electrode to the anode of the argon arc welding power supply, connecting the welding gun to the cathode of the argon arc welding power supply, and loading the welding wire into the welding gun;
s2, enabling the tungsten electrode to be close to the welding gun, then switching on the argon arc welding power supply, forming stable electric arc between the tungsten electrode and the welding gun, and melting the welding wire through the electric arc to form metal liquid drops;
s3, keeping the welding wire to be continuously fed, and continuously dropping the welding wire into the atomizer after the welding wire is melted;
s4, starting the gas supply system, continuously conveying high-pressure nitrogen to the atomizer, and forming an atomizing cone;
and S5, depositing the metal liquid drops on the base material in a semi-solid state after passing through the atomizing cone, and cladding for a certain time to form the required metal component.
In the method of the invention: the tungsten electrode is connected with the anode of the argon arc welding power supply, the MIG welding gun is connected with the cathode of the argon arc welding power supply, and the base material does not participate in the argon arc welding power supply loop, so that a molten pool is not formed.
The invention solves the problem that the base material must be connected with one electrode of a power supply in the traditional electric arc cladding material increasing process, avoids the passing of large current in the base material in the working process, and can avoid the burning of medium and small power electrical elements in the base material. The welding wires in the invention can be made of different materials and have different diameters to meet the high-efficiency material increase requirements of different materials.
In the scheme of the invention: the single-consumable electrode electric arc cladding material increasing system comprises: argon arc welds DC power supply, tungsten utmost point, MIG welder, atomizer and gas supply system. When the welding device works, a tungsten electrode is connected with an anode of an argon arc welding direct-current power supply, an MIG welding gun is connected with a cathode of the argon arc welding direct-current power supply, when two electrodes (namely the tungsten electrode and the MIG welding gun) are close to each other, a loop is formed and an electric arc is formed, a welding wire in the MIG welding gun is heated and melted, and the welding wire in the MIG welding gun is continuously fed, continuous metal liquid drops are formed and sucked into an atomizer below due to negative pressure caused by high-speed flowing high-pressure gas in the atomizer, at the moment, the gas supply system conveys high-pressure nitrogen to the atomizer to form an atomizing cone, the liquid drops are deposited in a working area after passing through the atomizing cone, and parts are formed after cooling, so that the function of electric arc cladding and material increasing is realized.
The invention has the beneficial effects that:
(1) In the scheme of the invention, the base material does not need to be electrified, so that the problem that an electrical element in the base material is burnt due to the fact that the base material is connected with one electrode of a power supply in the traditional arc cladding material increasing process can be avoided.
(2) The invention takes the tungsten electrode as the anode and the welding wire as the cathode to generate an electric arc heat source, melts the welding wire to complete melting, and does not form a molten pool when the base material (workpiece) is not electrified.
(3) In the scheme of the invention, the negative pressure in the atomizer has a strong attraction effect on the metal liquid drops, so that the additive repairing work at different spraying angles can be met.
(4) The process of the invention is adopted for cladding and material increasing, and the structural performance of the obtained material is superior to that of the common arc cladding method due to the adoption of a spray forming mode.
(5) The invention adopts nitrogen for injection and protection, so that the production cost is greatly reduced; the system in the scheme of the invention has the advantages of simple structure, stability, reliability, flexible and mobile production place, no influence on the base material and excellent organization performance of the material-added forming part.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of an electric arc cladding additive system with a single consumable electrode according to the present invention.
The mark in the figure is: the device comprises an argon arc welding power supply 1, a tungsten electrode 2, a welding gun 3, an atomizer 4, an air supply system 5, a welding wire 6, an atomizing cone 7, a base material 8 and metal liquid drops 9.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses. All other embodiments, which can be obtained by a person skilled in the art without inventive step based on the embodiments of the present invention, are within the scope of protection of the present invention.
Example 1
As shown in fig. 1, a single consumable electrode arc cladding additive system, comprising: argon arc welding direct current power supply 1, tungsten electrode 2, MIG welding gun 3, atomizer 4 and gas supply system 5; a welding wire 6 is arranged in the MIG welding gun 3; the tungsten electrode 2 is connected with the anode of the argon arc welding direct-current power supply 1, the MIG welding gun 3 is connected with the cathode of the argon arc welding direct-current power supply 1, and the tungsten electrode 2 and the MIG welding gun 3 are arranged close to each other; after the argon arc welding direct-current power supply 1 is switched on, a stable electric arc is formed between the tungsten electrode 2 and the welding gun 3, and the electric arc is used for melting the welding wire 6 in the welding gun 3 to form metal liquid drops; the gas supply system 5 is used for continuously supplying high-pressure nitrogen gas to the atomizer 4 and forming an atomizing cone 7 below the atomizer 4; the metal droplets are deposited on the substrate 8 after passing through the atomizing cone 7.
The method for the single-consumable electrode arc cladding material increase is characterized in that the method uses the single-consumable electrode arc cladding material increase system, and the method comprises the following specific steps:
s1, connecting a tungsten electrode 2 to the positive electrode of an argon arc welding direct-current power supply 1, connecting an MIG welding gun 3 to the negative electrode of the argon arc welding direct-current power supply 1, and loading a welding wire 6 into the welding gun 3;
s2, approaching the tungsten electrode 2 to the welding gun 3, then switching on the argon arc welding power supply 1, forming a stable electric arc between the tungsten electrode 2 and the welding gun 3, and melting the welding wire 6 by using the formed electric arc to form metal liquid drops 9;
s3, keeping the welding wire 6 continuously fed, melting the welding wire to form metal droplets 9, and continuously dropping the metal droplets into the atomizer 4;
s4, starting the gas supply system 5, continuously conveying high-pressure nitrogen to the atomizer 4, and forming an atomizing cone 7;
and S5, allowing the metal liquid drops to pass through the atomizing cone 7 and then deposit on the base material 8 in a semi-solid state, and cladding for a certain time to form the required metal component.
After the argon arc welding power supply 1 is connected, the tungsten electrode 2 is close to the MIG welding gun 3 to form a loop and form an electric arc, the welding wire 6 in the MIG welding gun 3 is heated and melted, the welding wire 6 in the MIG welding gun 3 is continuously fed, continuous metal droplets are formed and sucked into the atomizer 4 below due to negative pressure caused by high-speed flowing high-pressure gas in the atomizer 4, at the moment, the gas supply system 5 conveys high-pressure nitrogen to the atomizer to form an atomizing cone 7, the metal droplet flow is deposited in a working area after passing through the atomizing cone 7, and parts are formed after cooling, so that the function of electric arc cladding and material increasing is realized.
In the invention, the tungsten electrode 2 is connected with the anode of the argon arc welding power supply 1, the MIG welding gun 3 is connected with the cathode of the argon arc welding power supply 1, and the substrate 8 does not participate in the argon arc welding power supply loop, so that a molten pool is not formed.
The above-mentioned preferred embodiments of the present invention are provided for illustration only and not for the purpose of limiting the invention. Obvious variations or modifications of the present invention are within the scope of the present invention.
Claims (7)
1. A single consumable electrode arc cladding additive system, comprising: an argon arc welding power supply (1), a tungsten electrode (2), a welding gun (3), an atomizer (4) and an air supply system (5); a welding wire (6) is arranged in the welding gun (3); the tungsten electrode (2) is connected with the positive electrode of the argon arc welding power supply (1), and the welding gun (3) is connected with the negative electrode of the argon arc welding power supply (1); after the argon arc welding power supply (1) is connected, a stable electric arc is formed between the tungsten electrode (2) and the welding gun (3) and is used for melting the welding wire (6) in the welding gun (3) to form metal liquid drops; the gas supply system (5) is used for continuously supplying high-pressure gas to the atomizer (4) and forming an atomization cone (7) below the atomizer (4); the metal droplets are deposited on a base material (8) through the atomizing cone (7) after dropping.
2. The system for electric arc cladding and material increasing of the single consumable electrode according to claim 1, wherein the argon arc welding power supply (1) is a direct current power supply.
3. The system according to claim 1, wherein the welding gun (3) is a MIG welding gun.
4. The additive system as recited in claim 1, wherein a melting position of said welding wire (6) is disposed in a negative pressure region formed by said high-pressure gas.
5. The system of claim 1, wherein the high pressure gas is nitrogen.
6. The system of claim 1, wherein the tungsten electrode (2) and the welding torch (3) are protected by argon gas.
7. A single-consumable-pole arc cladding additive method using the single-consumable-pole arc cladding additive system of any one of claims 1-6, comprising the steps of:
s1, connecting a tungsten electrode (2) to the positive electrode of an argon arc welding power supply (1), connecting a welding gun (3) to the negative electrode of the argon arc welding power supply (1), and loading a welding wire (6) into the welding gun (3);
s2, enabling the tungsten electrode (2) to be close to the welding gun (3), then switching on the argon arc welding power supply (1), forming stable electric arc between the tungsten electrode (2) and the welding gun (3), and melting the welding wire (6) to form metal liquid drops;
s3, keeping the welding wire (6) continuously fed, and continuously dropping the welding wire into the atomizer (4) after the welding wire is melted;
s4, starting the gas supply system (5), continuously conveying high-pressure nitrogen to the atomizer (4), and forming an atomizing cone (7);
and S5, allowing the metal liquid drops to pass through the atomizing cone (7) and then deposit on the base material (8) in a semi-solid state, and cladding for a certain time to form the required metal component.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202211208078.3A CN115415641A (en) | 2022-09-30 | 2022-09-30 | Single-consumable electrode electric arc cladding material increasing system and method |
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| CN202211208078.3A CN115415641A (en) | 2022-09-30 | 2022-09-30 | Single-consumable electrode electric arc cladding material increasing system and method |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1990000936A1 (en) * | 1988-07-19 | 1990-02-08 | United States Department Of Energy | Method and apparatus for atomization and spraying of molten metals |
| US4992337A (en) * | 1990-01-30 | 1991-02-12 | Air Products And Chemicals, Inc. | Electric arc spraying of reactive metals |
| CN102319897A (en) * | 2011-09-21 | 2012-01-18 | 北京科技大学 | Manufacturing method of spray formed high-vanadium high-speed steel composite roller |
| CN102528035A (en) * | 2011-12-31 | 2012-07-04 | 西北工业大学 | System and method for forming disk part by performing two-stage atomizing and spraying |
| CN105750550A (en) * | 2016-04-02 | 2016-07-13 | 上海大学 | Digital spray atomization and deposition device |
| CN107584195A (en) * | 2017-10-24 | 2018-01-16 | 沈阳理工大学 | Alternating electric arc fuse argon tungsten-arc welding system and method for Welded |
| CN112077314A (en) * | 2020-09-07 | 2020-12-15 | 江苏理工学院 | Arc deposition jet additive manufacturing/repairing device suitable for mechanical arm terminal |
-
2022
- 2022-09-30 CN CN202211208078.3A patent/CN115415641A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1990000936A1 (en) * | 1988-07-19 | 1990-02-08 | United States Department Of Energy | Method and apparatus for atomization and spraying of molten metals |
| US4992337A (en) * | 1990-01-30 | 1991-02-12 | Air Products And Chemicals, Inc. | Electric arc spraying of reactive metals |
| CN102319897A (en) * | 2011-09-21 | 2012-01-18 | 北京科技大学 | Manufacturing method of spray formed high-vanadium high-speed steel composite roller |
| CN102528035A (en) * | 2011-12-31 | 2012-07-04 | 西北工业大学 | System and method for forming disk part by performing two-stage atomizing and spraying |
| CN105750550A (en) * | 2016-04-02 | 2016-07-13 | 上海大学 | Digital spray atomization and deposition device |
| CN107584195A (en) * | 2017-10-24 | 2018-01-16 | 沈阳理工大学 | Alternating electric arc fuse argon tungsten-arc welding system and method for Welded |
| CN112077314A (en) * | 2020-09-07 | 2020-12-15 | 江苏理工学院 | Arc deposition jet additive manufacturing/repairing device suitable for mechanical arm terminal |
Non-Patent Citations (1)
| Title |
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| 杨涛;张生虎;高洪明;吴林;许可望;刘永贞;: "TIG-MIG复合焊电弧特性机理分析", 焊接学报, no. 07 * |
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