CN110722249A - Method for manufacturing bimetal arc additive by adopting plasma heat source - Google Patents
Method for manufacturing bimetal arc additive by adopting plasma heat source Download PDFInfo
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- CN110722249A CN110722249A CN201910909730.6A CN201910909730A CN110722249A CN 110722249 A CN110722249 A CN 110722249A CN 201910909730 A CN201910909730 A CN 201910909730A CN 110722249 A CN110722249 A CN 110722249A
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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
- B23K9/12—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
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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
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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
- B23K9/32—Accessories
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- 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
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- 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
Abstract
The invention discloses a method for manufacturing a bimetal electric arc additive by adopting a plasma heat source, which adopts a plasma welding machine as the heat source, wherein a welding wire A and a welding wire B in a bimetal welding wire are simultaneously used as cladding filling materials, and the welding wire A and the welding wire B are respectively sent into a molten pool generated by a plasma arc to be melted by a wire feeding system corresponding to the welding wire A and the welding wire B according to the required wire feeding speed to form a mixed melting welding wire; modeling a workpiece to be printed by using additive manufacturing software, determining the height of each layer of additive layer according to the material performance of the workpiece, and carrying out layered slicing on a part digital model in the Z direction by using arc additive manufacturing slicing software according to the determined layer height, wherein the cladding mode of each layer of slice is as follows: the outer wall adopts a mixed-melting welding wire for carrying out the linear cladding in a shape like a Chinese character 'hui', and the inner layer adopts the mixed-melting welding wire for carrying out the linear filling cladding.
Description
Technical Field
The invention relates to a method for manufacturing a bimetal arc additive by adopting a plasma heat source, and belongs to the technical field of 3D printing.
Background
Additive Manufacturing (AM) is commonly known as 3D printing, combines computer-aided design, material processing and molding technologies, and is a Manufacturing technology for Manufacturing solid articles by stacking special metal materials, non-metal materials and medical biomaterials layer by layer in modes of extrusion, sintering, melting, photocuring, spraying and the like through a software and numerical control system on the basis of a digital model file.
Additive manufacturing techniques are often used to manufacture models in the fields of mold manufacturing, industrial design, etc., and are gradually used for direct manufacturing of some products, and parts printed by using such techniques are already available. The technology has applications in jewelry, footwear, industrial design, construction, engineering and construction (AEC), automotive, aerospace, dental and medical industries, education, geographic information systems, civil engineering, firearms, and other fields.
The electric arc additive manufacturing technology (WAAM) is an advanced digital manufacturing technology which utilizes a layer-by-layer cladding principle, adopts electric arcs generated by welding machines such as Metal Inert Gas (MIG), Tungsten Inert Gas (TIG) and a plasma welding power supply (PA) as heat sources, and gradually forms metal parts from a line-surface-body according to a three-dimensional digital model under the control of a software program by adding wire materials.
Disclosure of Invention
The technical problem to be solved by the invention is to provide a method for manufacturing a bimetal electric arc additive by adopting a plasma heat source, wherein two different metal welding wires are adopted for cladding at the same time, two metal alloys are added to form a product with a bimetal structure, and the product has better performance compared with the strength or hardness of a single metal.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows:
a method for manufacturing bimetal arc additive by adopting a plasma heat source adopts a plasma welding machine as a heat source, welding wires A and B in a bimetal welding wire are simultaneously used as cladding filling materials, and the welding wires A and B are respectively sent into a molten pool generated by plasma arc to be melted through a wire feeding system corresponding to the welding wires A and B according to the required wire feeding speed to form a mixed melting welding wire; modeling a workpiece to be printed by using additive manufacturing software, determining the height of each layer of additive layer according to the material performance of the workpiece, and carrying out layered slicing on a part digital model in the Z direction by using arc additive manufacturing slicing software according to the determined layer height, wherein the cladding mode of each layer of slice is as follows: the outer wall adopts a mixed-melting welding wire for carrying out the linear cladding in a shape like a Chinese character 'hui', and the inner layer adopts the mixed-melting welding wire for carrying out the linear filling cladding.
In the mixed welding wire, the mixed ratio of the welding wire A and the welding wire B is consistent with the wire feeding speed ratio of the welding wire A and the welding wire B.
Wherein, the filling mode of the inner layer is as follows: each section of additive welding bead is filled in a straight line in a shape of a Chinese character 'hui', each section of additive welding bead is filled in a straight line along the X-axis direction, each section of additive welding bead is filled in a straight line along the Y-axis direction, or each section of additive welding bead is filled in a straight line in a zigzag shape.
Wherein the welding current of the plasma arc is 290A, the plasma gas flow is 1.8L/min, the deposition speed is 5mm/S, and the protective gas flow is 20L/min.
The welding wire A is a nickel-based Inconel718 welding wire, the welding wire B is a copper-based ER Cu welding wire, the wire feeding speed of the welding wire A is 1.8m/min, and the wire feeding speed of the welding wire B is 0.9 m/min.
Wherein, when the straight line filling mode of inlayer adopts every section vibration material disk welding bead to be the dogleg shape and carries out the straight line and fill, the straight line filling contained angle of the inlayer of adjacent layer is 0 ~ 90.
The invention relates to a method for manufacturing a bimetal arc additive by adopting a plasma heat source, which adopts a plasma welding machine as the heat source, welding wires A and B in a bimetal welding wire as deposited filling materials, and the welding wires A and B respectively carry out wire feeding through a wire feeding system connected with the welding wires A and B; the method comprises the following steps of performing layered slicing on a product to be printed by additive manufacturing software, wherein after the product is layered sliced, the cladding mode for odd-layer slices is as follows: carrying out accumulation cladding on each section of additive welding bead along the X-axis direction, and alternately cladding a welding wire A and a welding wire B in each section of additive welding bead; the cladding mode for the slices of the even number layers is as follows: and carrying out accumulation cladding on each section of additive welding bead along the Y-axis direction, and alternately cladding the welding wire A and the welding wire B in each section of additive welding bead. The unit length of each additive welding bead is L, and L is X% welding wire A + (1-X%)% welding wire B.
The invention relates to a method for manufacturing a bimetal arc additive by adopting a plasma heat source, which adopts a plasma welding machine as the heat source, welding wires A and B in a bimetal welding wire as deposited filling materials, and the welding wires A and B respectively carry out wire feeding through a wire feeding system connected with the welding wires A and B; the method comprises the following steps of performing layered slicing on a product to be printed by additive manufacturing software, wherein after the product is layered sliced, the cladding mode for odd-layer slices is as follows: stacking and cladding are carried out on each section of additive welding bead along the X-axis direction, welding wires A and welding wires B in each section of additive welding bead are alternately cladded, and the alternating modes of the welding wires A and the welding wires B in adjacent additive welding beads are staggered; the welding mode for the slices of the even number layers is as follows: and each section of additive welding bead is subjected to accumulation cladding along the Y-axis direction, welding wires A and B in each section of additive welding bead are subjected to alternate cladding, and the alternate modes of the welding wires A and the welding wires B in adjacent additive welding beads are staggered. The unit length of each additive welding bead is L, and L is X% welding wire A + (1-X%)% welding wire B.
The method can adopt a TIG arc heat source or a laser cladding heat source to replace a plasma arc heat source.
In the method, the selection of the metal wire is determined according to the original product or expected structural performance requirements, such as strength and hardness, namely the original product is made of any material or the expected structural performance requirements, the material of one of the metal wires (main metal wire) selected in the 3D printing process is basically the same as the material composition of the original product or is the same as the expected performance requirements, and then the metal wire with good compatibility with the metal wire is added into the metal wire, so that the strength or hardness or other properties of the product are further improved.
Has the advantages that: the invention adopts a plasma heat source to carry out bimetal electric arc additive manufacturing, and controls the mixing and melting proportion of two metal wires by controlling different wire feeding speeds of the two metal wires, thereby obtaining a product with required performance.
Drawings
FIG. 1 is a diagram illustrating a first-layer printing path of additive manufacturing software modeling a workpiece to be printed and slicing the workpiece in layers according to the properties of the material itself in the printing method according to the present invention;
FIG. 2 is a print path for a second layer after the first layer of FIG. 1 is printed;
FIG. 3 is a schematic view illustrating a dual-metal fuse filling method according to the present invention;
FIG. 4 is an additive manufacturing software modeling a workpiece to be printed and slicing it in layers according to the material properties;
FIG. 5 is a schematic view showing a printing manner of an odd-numbered layer in embodiment 2;
FIG. 6 is a schematic view showing a printing pattern of an even layer in example 2;
fig. 7 is a schematic diagram of a printing manner of the odd-numbered layers in embodiment 3.
Detailed Description
The invention will be better understood from the following examples. However, those skilled in the art will readily appreciate that the description of the embodiments is only for illustrating the present invention and should not be taken as limiting the invention as detailed in the claims.
As shown in FIGS. 1-2, the method of the invention adopts additive manufacturing software to model a workpiece to be printed, determines the height of each layer of additive layer according to the material performance of the workpiece, uses arc additive manufacturing slicing software to slice a part digital model in a Z direction in a layering manner according to the determined layer height to obtain a two-dimensional profile of the part model, and uses a bias algorithm or a parallel line scanning algorithm to generate an additive path corresponding to each point on each plane (each layer). The method adopts a Plasma welding machine as a heat source, controls and drives through additive manufacturing software, leads two corresponding metal wires in two wire feeding systems to be fed into a Plasma arc at a certain wire feeding speed for cladding at the same time, and obtains the ratio of the two welding wire metals in a welding bead through respectively controlling the wire feeding amount (wire feeding speed) of the two welding wires.
Two wires of the bimetallic material used in the method are a nickel-based Incone1718 welding wire (welding wire A) and a copper-based ER Cu welding wire (welding wire B); the welding current of the plasma arc is 290A, the plasma gas flow is 1.8L/min, the deposition speed is 5mm/S, the protective gas flow is 20L/min, the wire feeding speed of the welding wire A is 1.8m/min, and the wire feeding speed of the welding wire B is 0.9 m/min; feeding the welding wire A and the welding wire B into a molten pool generated by plasma arc at wire feeding speeds of 1.8m/min and 0.9m/min respectively for melting to form a mixed melting welding wire of the welding wire A and the welding wire B; modeling a workpiece to be printed by using additive manufacturing software, determining the height of each layer of additive layer according to the material performance of the workpiece, and carrying out layered slicing on a part digital model in the Z direction by using arc additive manufacturing slicing software according to the determined layer height, wherein the cladding mode of each layer of slice is as follows: the outer wall adopts a mixed-melting welding wire to carry out zigzag linear cladding, and the inner layer adopts a mixed-melting welding wire to carry out fold linear filling cladding; setting waiting time between layers, wherein the waiting time between layers of each layer is 30-60S; printing a workpiece with the volume of 150mm 60mm for 120min, and naturally cooling to room temperature after printing. As shown in fig. 3, there are 66.7% wire a + 33.3% wire B (the eutectic wire) in each weld pass. In the embodiment, each layer of the product with the bimetal structure is obtained by adding two alloys including Inconel718 and a copper alloy, compared with the product prepared from a single Inconel 1718 alloy, the thermal physical property and the mechanical property of the product are effectively improved, after copper is added in the 3D printing process, the strength of the product (part) in subsequent application can be improved by 80%, and the cooling speed can be improved by 250%.
Example 2
As shown in fig. 4-6, the method for manufacturing the bimetal arc additive by using the plasma heat source adopts the plasma welding machine as the heat source, the welding wire a and the welding wire B in the bimetal welding wire as deposited filling materials, and linear alternate weaving and cladding are performed according to a slicing path generated by additive manufacturing software; the method specifically comprises the following steps: the method comprises the following steps of performing layered slicing on a product to be printed by additive manufacturing software, wherein after the product is layered sliced, the cladding mode for odd-layer slices is as follows: cladding each section of additive welding bead along the X-axis direction, alternately cladding welding wires A and B in each section of additive welding bead, and staggering the alternate mode of the welding wires A and B in the adjacent additive welding beads; the welding mode for the slices of the even number layers is as follows: and cladding is carried out on each section of additive welding bead along the Y-axis direction, welding wires A and B in each section of additive welding bead are alternately cladded, and the alternating modes of the welding wires A and the welding wires B in adjacent additive welding beads are staggered. The bimetal interweaving structure enables the product to have high tensile strength, the elongation rate is greatly increased, and the plastic deformation capacity is also greatly improved, so that the structure performance of the product has higher strength, hardness and crack arrest capacity, and the product has the performances of high bearing capacity, high impact resistance and the like.
Example 3
The invention relates to a method for manufacturing a bimetal arc additive by adopting a plasma heat source, which adopts a plasma welding machine as the heat source, welding wires A and B in a bimetal welding wire as deposited filling materials, and carries out linear alternate weaving and cladding according to a slicing path generated by additive manufacturing software; the method specifically comprises the following steps: the method comprises the following steps of performing layered slicing on a product to be printed by additive manufacturing software, wherein after the product is layered sliced, the cladding mode for odd-layer slices is as follows: cladding each section of additive welding bead along the X-axis direction, and alternately cladding a welding wire A and a welding wire B in each section of additive welding bead; the cladding mode for the slices of the even number layers is as follows: and cladding each section of additive welding bead along the Y-axis direction, and alternately cladding the welding wire A and the welding wire B in each section of additive welding bead.
Claims (10)
1. A method for manufacturing a bimetal arc additive by adopting a plasma heat source is characterized by comprising the following steps: the method adopts a plasma welding machine as a heat source, welding wires A and B in the bimetallic welding wire are simultaneously used as cladding filling materials, and the welding wires A and B are respectively fed into a molten pool generated by plasma arc for melting through a wire feeding system connected with the welding wires A and B according to corresponding wire feeding speeds to form a mixed-melting welding wire; modeling a workpiece to be printed by using additive manufacturing software, determining the height of each additive layer according to the material performance of the workpiece, and carrying out layered slicing on a part digital model in the Z direction by using arc additive manufacturing slicing software according to the determined layer height, wherein each layer of slice is cladded by adopting a mixed melting welding wire.
2. A method for manufacturing a bimetal arc additive by adopting a plasma heat source is characterized by comprising the following steps: the method adopts a plasma welding machine as a heat source, welding wires A and B in a bimetal welding wire as deposited filling materials, and the welding wires A and B alternately feed wires through a wire feeding system connected with the welding wires A and B respectively; the method comprises the following steps of performing layered slicing on a product to be printed by additive manufacturing software, wherein after the product is layered sliced, the cladding mode for odd-layer slices is as follows: carrying out accumulation cladding on each section of additive welding bead along the X-axis direction, and alternately cladding a welding wire A and a welding wire B in each section of additive welding bead; the cladding mode for the slices of the even number layers is as follows: and carrying out accumulation cladding on each section of additive welding bead along the Y-axis direction, and alternately cladding the welding wire A and the welding wire B in each section of additive welding bead.
3. A method for manufacturing a bimetal arc additive by adopting a plasma heat source is characterized by comprising the following steps: the method adopts a plasma welding machine as a heat source, welding wires A and B in a bimetal welding wire as deposited filling materials, and the welding wires A and B alternately feed wires through a wire feeding system connected with the welding wires A and B respectively; the method comprises the following steps of performing layered slicing on a product to be printed by additive manufacturing software, wherein after the product is layered sliced, the cladding mode for odd-layer slices is as follows: stacking and cladding are carried out on each section of additive welding bead along the X-axis direction, welding wires A and welding wires B in each section of additive welding bead are alternately cladded, and the alternating modes of the welding wires A and the welding wires B in adjacent additive welding beads are staggered; the welding mode for the slices of the even number layers is as follows: and each section of additive welding bead is subjected to accumulation cladding along the Y-axis direction, welding wires A and B in each section of additive welding bead are subjected to alternate cladding, and the alternate modes of the welding wires A and the welding wires B in adjacent additive welding beads are staggered.
4. A method of bi-metallic arc additive manufacturing using a plasma heat source as claimed in claim 1 or 2 or 3, wherein: the welding current of the plasma arc is 290A, the plasma gas flow is 1.8L/min, the deposition speed is 5mm/S, and the protective gas flow is 20L/min.
5. A method of bi-metallic arc additive manufacturing using a plasma heat source as claimed in claim 1 or 2 or 3, wherein: and a TIG arc heat source or a laser cladding heat source is adopted to replace a plasma arc heat source.
6. A method of bi-metallic arc additive manufacturing using a plasma heat source as claimed in claim 2 or 3, wherein: the unit length of each additive welding bead is L, and L is X% welding wire A + (1-X%)% welding wire B.
7. The method of bi-metallic arc additive manufacturing using a plasma heat source of claim 1, wherein: the cladding mode of each layer of slices is as follows: the outer wall adopts a mixed-melting welding wire for carrying out the linear cladding in a shape like a Chinese character 'hui', and the inner layer adopts the mixed-melting welding wire for carrying out the linear filling cladding.
8. The method of bi-metallic arc additive manufacturing using a plasma heat source of claim 7, wherein: in the mixed welding wire, the mixed ratio of the welding wire A and the welding wire B is consistent with the wire feeding speed ratio of the welding wire A and the welding wire B.
9. The method of bi-metallic arc additive manufacturing using a plasma heat source of claim 7, wherein: the filling mode of the inner layer comprises the following steps: each section of additive welding bead is filled linearly in a shape of a Chinese character 'hui', each section of additive welding bead is filled linearly along the X-axis direction, each section of additive welding bead is filled linearly along the Y-axis direction, or each section of additive welding bead is filled linearly in a zigzag shape; when the linear filling mode of the inner layer adopts each section of additive welding bead to be in a zigzag shape for linear filling, the linear filling included angle of the inner layer of the adjacent layer is 0-90 degrees.
10. The method of bi-metallic arc additive manufacturing using a plasma heat source of claim 7, wherein: the unit length of each additive welding bead is L, and L is 66.7% welding wire A + 33.3% welding wire B.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910909730.6A CN110722249B (en) | 2019-09-26 | 2019-09-26 | Method for manufacturing bimetal arc additive by adopting plasma heat source |
| PCT/CN2019/112834 WO2021056650A1 (en) | 2019-09-26 | 2019-10-23 | Method for bimetal wire arc additive manufacturing by means of plasma heat source |
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| CN201910909730.6A CN110722249B (en) | 2019-09-26 | 2019-09-26 | Method for manufacturing bimetal arc additive by adopting plasma heat source |
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| CN112518062A (en) * | 2020-11-04 | 2021-03-19 | 哈尔滨工业大学（威海） | Laser alternate wire filling welding method for regulating and controlling dissimilar joint elements |
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| CN117300318A (en) * | 2023-11-29 | 2023-12-29 | 陕西鼎益科技有限公司 | Molten pool intermediate transition multi-ring cladding material-increasing printing method and system |
| CN117300318B (en) * | 2023-11-29 | 2024-03-15 | 陕西鼎益科技有限公司 | Molten pool intermediate transition multi-ring cladding material-increasing printing method and system |
| CN117300296A (en) * | 2023-11-30 | 2023-12-29 | 苏州融速智造科技有限公司 | Method for optimizing arc additive welding bead under argon-free protection |
| CN117300296B (en) * | 2023-11-30 | 2024-03-01 | 苏州融速智造科技有限公司 | Method for optimizing arc additive welding bead under argon-free protection |
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| CN110722249B (en) | 2021-02-26 |
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