CN119681386A - An efficient and high-quality multi-wire and multi-arc additive manufacturing device and method for ultrasonic vibration wire - Google Patents
An efficient and high-quality multi-wire and multi-arc additive manufacturing device and method for ultrasonic vibration wire Download PDFInfo
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Abstract
本发明属于电弧增材制造领域，具体为一种超声振动丝材的高效高质多丝多弧增材制造装置及方法。该装置包括电弧增材平台，增材枪体固定组合平台、多超声振动辅助多丝系统，熔池视觉监测装置及控制系统，增材枪体固定组合平台与电弧增材平台相连接，其中，多套自动送丝机根据增材需要固定于增材枪体固定组合平台上，超声振动装置对自动送丝机的丝材进行超声振动，使得增材过程中，超声振动随着焊丝传导到熔池，对熔池进行搅拌。本发明通过焊枪中导电的丝材与外送丝的不同数量的组合，不仅减少了多电弧带来的高热输入，还提高了增材效率，超声振动通过丝材传导至熔池中，最终提高增材构件显微硬度、抗拉强度等力学性能。
The present invention belongs to the field of arc additive manufacturing, and specifically relates to an efficient and high-quality multi-wire and multi-arc additive manufacturing device and method for ultrasonic vibration wire. The device includes an arc additive platform, an additive gun body fixed combination platform, a multi-ultrasonic vibration assisted multi-wire system, a molten pool visual monitoring device and a control system, and the additive gun body fixed combination platform is connected to the arc additive platform, wherein multiple sets of automatic wire feeders are fixed on the additive gun body fixed combination platform according to the additive needs, and the ultrasonic vibration device ultrasonically vibrates the wire of the automatic wire feeder, so that during the additive process, the ultrasonic vibration is transmitted to the molten pool along with the welding wire to stir the molten pool. The present invention not only reduces the high heat input caused by multiple arcs, but also improves the additive efficiency by combining different numbers of conductive wires in the welding gun and external feeding wires. The ultrasonic vibration is transmitted to the molten pool through the wire, and finally improves the mechanical properties such as microhardness and tensile strength of the additive component.
Description
Technical Field
The invention belongs to the field of additive manufacturing, and particularly relates to a high-efficiency high-quality multi-wire multi-arc additive manufacturing device and method for ultrasonic vibration wires.
Background
The additive manufacturing is a modern manufacturing process method for forming a product by establishing a digital model and accumulating materials from bottom to top, and mainly comprises laser, electron beam, electric arc additive manufacturing and the like according to different metal additive manufacturing of a heat source. Has the natural advantages of high deposition efficiency and low cost.
Compared with single-wire arc material increase, multi-wire arc material increase can further improve deposition efficiency to achieve the purpose of rapid prototyping, and Chinese patent with the patent application number of CN202310577473.X discloses an arc material increase multi-wire feeding device and a using method, and various wires with different types and diameters can be fed through the device at the same time, so that the material increase efficiency is effectively improved.
However, the improvement of the multi-wire multi-arc additive efficiency is accompanied by the increase of heat input, and the excessive heat input can cause defects of coarse structural grains, stress deformation and the like of a formed part, so that the anisotropy of the material is caused, the mechanical property of a component is reduced, and the application and popularization of the multi-wire arc additive manufacturing technology are limited. In order to reduce heat input, the common method is pulse arc, externally applied cooling, low-temperature gas introduction, wire feeding and the like, and compared with other methods for reducing heat input, the wire feeding is more convenient to apply, and the deposition efficiency can be improved while the heat input is reduced. To further refine the grains and improve their performance, ultrasound field assistance is introduced herein. At present, the ultrasonic-assisted arc additive manufacturing is mainly divided into two types, namely, ultrasonic vibration action is used on a substrate or a deposition layer, and ultrasonic vibration action is used on a wire or a molten pool. The former has disadvantages in that the range and intensity of the ultrasonic vibration are affected by factors such as the shape, size, thickness, surface roughness, etc. of the substrate or the deposition layer, and the direction of the ultrasonic vibration is inconsistent with the moving direction of the molten pool, which may result in uniform action of the molten pool, and the latter has disadvantages in that the range and intensity of the ultrasonic vibration are affected by factors such as the diameter, material, feeding speed, etc. of the wire, and the ultrasonic vibration may affect the conveyance of the wire and the transition of the molten drop. The ultrasonic device applies a certain pressure to bear on the deposition layer, but the surface of the deposition layer is not necessarily smooth and flat enough, so that ultrasonic energy loss is caused by overlarge friction. In summary, the prior art remains to be solved.
Disclosure of Invention
In order to overcome the defects in the prior art, the invention aims to provide a high-efficiency high-quality multi-wire multi-arc additive manufacturing device and method for an ultrasonic vibration wire, and the method can improve the mechanical properties of a formed part while improving the additive efficiency.
The technical solution for realizing the purpose of the invention is as follows:
The utility model provides a high-efficient high-quality multiscrew multi-arc vibration material adding manufacturing installation of ultrasonic vibration silk material, includes electric arc material adding platform, welder fixed combination platform, supplementary multiscrew system of multisound vibration, molten pool vision monitoring device and control system.
The material adding gun body fixing combination platform is used for fixing welding guns, the welding guns are contacted and fixed with the combination platform through bolts, and the welding guns are parallel to each other and keep a certain distance. Meanwhile, the platform needs to be connected with the arc material adding platform, and is not limited to various connection modes such as stud connection, welding, clamp connection and the like.
The multi-ultrasonic vibration auxiliary multi-wire system comprises a plurality of automatic wire feeders and an ultrasonic vibration device, and is fixed on a fixed combination platform of the material-increasing gun body, the automatic wire feeders are used for conveying external wires to the lower part of the welding gun through hoses, the automatic wire feeders are controlled by a control system, welding wires of the automatic wire feeders pass through the ultrasonic vibration device, and the wire feeding speed of the automatic wire feeders is adjustable from 0m/min to 20 m/min. The ultrasonic vibration device consists of an ultrasonic generator, an ultrasonic converter and an amplitude transformer, the operation of the ultrasonic vibration device is controlled by a control system, the control system enables the ultrasonic generator to generate ultrasonic waves, the ultrasonic converter connected with the ultrasonic generator converts the ultrasonic waves into mechanical vibration, the amplitude transformer connected with the ultrasonic converter enhances the amplitude of the ultrasonic vibration, the control system can adjust the ultrasonic vibration frequency from 20kHz to 2MHz, and meanwhile, the ultrasonic amplitude is adjustable from 30 mu m to 150 mu m. The ultrasonic vibration device is connected with the additive gun body fixing and combining platform through a clamp.
The molten pool visual monitoring device is used for monitoring penetration data and surface flow speed and feeding back the penetration data and the surface flow speed to the control system, and the control system further adjusts the frequency and the amplitude of ultrasonic vibration and the wire feeding speed of the welding gun.
The control system controls the output power, the vibration frequency and the vibration amplitude of the ultrasonic vibration device and the wire feeding speeds of the welding gun and the wire feeding machine in real time according to the feedback value, so that the molten pool is in an optimal flowing state, and further the interface tissue is regulated and controlled in a closed loop mode to be mixed with elements in the molten pool.
The high-efficiency high-quality multi-wire multi-arc additive manufacturing method of the ultrasonic vibration wire is carried out,
Aiming at a plurality of large-sized components with inconsistent upper and lower forming widths, the number of welding guns and the number of outgoing wires carried on a welding gun fixing and combining platform are determined by a layering slicing method, a path is planned, a component is obtained by material addition, meanwhile, an ultrasonic vibration device carries out ultrasonic vibration on the wire material of an automatic wire feeder, so that in the material addition process, the ultrasonic vibration is conducted to a molten pool along with welding wires, the molten drop transition is improved by cavitation effect, acoustic flow effect, mechanical effect and thermal effect, the molten pool flow is pushed, the components of the molten pool are uniform, coarse grains are crushed, and finally the microhardness, tensile strength and other mechanical properties of the material addition component are improved.
The method specifically comprises the following steps:
the method comprises the steps of (1) constructing a three-dimensional solid model according to the shape of a part, slicing the three-dimensional solid model, importing the three-dimensional solid model into a control system, and generating a processing program file according to the model by the control system;
Step (2), polishing the substrate clean and fixing the substrate on a workbench;
Selecting proper welding guns and automatic wire feeders according to different wire materials and scene requirements, and adjusting proper additive parameters;
The ultrasonic vibration device is fixed through a clamp and is in close contact with welding wires of the automatic wire feeder, and one automatic wire feeder corresponds to one ultrasonic vibration device;
According to actual needs, the number of welding guns used in each layer of material adding and the number of welding wires passing through an ultrasonic vibration device are regulated in a control system, and a path is planned, wherein for a formed part with a simple structure, only one welding gun and a matched outer wire are needed, the outer wire has the effect of improving the material adding efficiency and reducing the heat input of the formed part, and for a large formed part with a complex structure, a plurality of sets of welding guns and outer wires can be combined and coordinated for material adding, and the welding guns and the outer wires are controlled through the control system so as to perform electric arc material adding according to a preset path;
Step (6), switching on a power supply of the ultrasonic vibration device, and adjusting the amplitude and frequency of vibration of the welding wire to enable the welding wire to generate proper vibration;
The angle and the direction of the visual sensing device of the molten pool are adjusted to accurately monitor the flowing condition of the molten pool;
Step 8, starting material adding, monitoring flow information of a molten pool in the material adding process, including penetration and flow speed of the surface of the molten pool, and transmitting data to a control system;
The control system adjusts the vibration amplitude and frequency of the ultrasonic vibration device, the wire feeding speed of the welding gun and the automatic wire feeder, the walking speed of the welding gun and the additive current and voltage according to the flowing condition of the molten pool, if the penetration is monitored to be smaller, the control system adjusts the proper walking speed of the welding gun and properly increases the welding current and voltage, and if the surface flow rate of the molten pool is monitored to be too low, the amplitude and frequency of the ultrasonic vibration device are properly increased;
And (10) completing material adding, and sequentially closing an electric arc material adding system, a multi-ultrasonic vibration auxiliary multi-wire system and a molten pool visual monitoring device to control the system.
Compared with the prior art, the invention has the remarkable advantages that:
(1) The invention provides a multi-wire multi-arc additive manufacturing technology, which effectively reduces heat input and improves deposition efficiency by adding cold wires into a multi-wire arc additive system.
(2) The invention applies ultrasonic vibration on the wire feeding, and the welding wire transmits the ultrasonic vibration to the molten pool, thereby playing the roles of refining crystal grains and damaging the growth of columnar crystals so as to improve the performance.
(3) According to the invention, the number of welding guns and the number of outgoing wires are regulated according to the requirements, so that the material addition can be performed on large-sized forming parts with complex structures, and the flexibility and the efficiency of multi-wire material addition are improved.
(4) The invention can be used for manufacturing the arc additive of the same material and also can be used for manufacturing the arc additive of different materials, thereby providing more convenience for subsequent experiments.
Drawings
FIG. 1 is a schematic diagram of a high-efficiency high-quality multi-filament multi-arc additive manufacturing apparatus for ultrasonically vibrating wire in accordance with the present invention.
Fig. 2 is a diagram of a multiple ultrasonic vibration multifilament system of the present invention.
Fig. 3 is a schematic view of the structure of the ultrasonic vibration device of the present invention.
Fig. 4 is a schematic diagram of an additive heterostructure apparatus of the present invention.
Fig. 5 is a schematic diagram of a deposition process of an additive heterostructure material of the present invention.
The reference numerals indicate a 1-ultrasonic vibration device, a 1-1 ultrasonic generator, a 1-2 ultrasonic transducer, a 1-3 amplitude transformer, a 2-control system, a 3-automatic wire feeder, a 3-1-automatic wire feeder A, a 3-2-automatic wire feeder B, a 4-electric arc material adding platform, a 5-material adding gun body fixing and combining platform, a 6-molten pool visual monitoring device, a 7-1-welding gun A and a 7-2-welding gun B.
Detailed Description
The objects and effects of the present invention will become more apparent from the following detailed description of the preferred embodiments and the accompanying drawings, in which the present invention is further described in detail. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
As shown in fig. 1, the invention provides a high-efficiency high-quality multi-wire multi-arc additive manufacturing device for ultrasonic vibration wires, which comprises an arc additive platform, an ultrasonic vibration device, an automatic wire feeder, an additive gun body fixing and combining platform, a control system and a molten pool visual monitoring device.
The material adding gun body fixing combination platform 5 is used for fixing welding guns of the electric arc material adding platform 4, the welding guns are contacted and fixed with the combination platform through bolts, and the welding guns are parallel to each other and keep a certain distance. Meanwhile, the platform needs to be connected with the arc material adding platform 4, and the arc material adding platform is not limited to various connection modes such as stud connection, welding, clamp connection and the like.
As shown in fig. 2, the multi-ultrasonic vibration auxiliary multi-wire system comprises a plurality of automatic wire feeders 3 and an ultrasonic vibration device 1, and is fixed on a fixed combination platform 5 of an additive gun body, wherein the automatic wire feeders 3 convey welding wires to the lower part of a welding gun through hoses, the automatic wire feeders 3 are controlled by a control system 2, the welding wires of the automatic wire feeders 3 pass through the ultrasonic vibration device 1, and the wire feeding speed of the automatic wire feeders is adjustable from 0m/min to 20 m/min.
As shown in FIG. 3, the ultrasonic vibration device 1 is composed of an ultrasonic generator 1-1, an ultrasonic transducer 1-2 and a horn 1-3, the operation of the ultrasonic vibration device 1 is controlled by a control system 2, the control system 2 enables the ultrasonic generator 1-1 to generate ultrasonic waves, the ultrasonic transducer 1-2 connected with the ultrasonic generator 1-1 converts the ultrasonic waves into mechanical vibrations, the horn connected with the ultrasonic transducer 1-1 enhances the amplitude of the ultrasonic vibrations, the control system 2 can adjust the ultrasonic vibration frequency from 20kHz to 2MHz, and the ultrasonic amplitude is adjustable from 30 μm to 150 μm. The ultrasonic vibration device 1 is connected with the additive gun body fixing and combining platform 5 through a clamp. The ultrasonic vibration device 1 carries out ultrasonic vibration on the wire material of the automatic wire feeder 3, so that in the material adding process, the ultrasonic vibration is conducted to a molten pool along with a welding wire, the molten drop transition is improved through cavitation effect, acoustic flow effect, mechanical effect and thermal effect, the molten pool flow is pushed, the molten pool components are uniform, coarse grains are crushed, and finally the mechanical properties such as microhardness, tensile strength and the like of the material adding component are improved.
The molten pool visual monitoring device 6 is used for monitoring the penetration data and the surface flow speed and feeding back to the control system 2, and the control system 2 further adjusts the frequency and the amplitude of ultrasonic vibration and the wire feeding speed of the welding gun.
The control system 2 controls the output power, the vibration frequency and the vibration amplitude of the ultrasonic vibration device 1 and the wire feeding speed of the welding gun and the automatic wire feeder 3 in real time according to the feedback value, so that the molten pool is in an optimal flowing state, and the interface tissue is regulated and controlled to be mixed with elements in the molten pool in a closed loop mode.
The invention also provides a high-efficiency high-quality multi-wire multi-arc additive manufacturing method of the ultrasonic vibration wire, which comprises the following steps:
the method comprises the steps of (1) constructing a three-dimensional solid model according to the shape of a part, slicing the three-dimensional solid model, importing the three-dimensional solid model into a control system 2, and generating a processing program file by the control system 2 according to the model;
Step (2), polishing the substrate clean and fixing the substrate on a workbench;
Selecting proper welding guns and automatic wire feeders according to different wire materials and scene requirements, and adjusting proper additive parameters;
Fixing the ultrasonic vibration device 1 through a clamp and tightly contacting the welding wire of the automatic wire feeder 3, wherein one automatic wire feeder 3 corresponds to one ultrasonic vibration device 1;
According to actual needs, the number of welding guns used when each layer of material is added and the number of welding wires passing through the ultrasonic vibration device 1 are regulated in the control system 2, and a path is planned, wherein for a formed part with a simple structure, only one welding gun and a matched outer wire are needed, the outer wire has the effect of improving the material adding efficiency and reducing the heat input of the formed part, and for a large formed part with a complex structure, a plurality of sets of welding guns and outer wires can be combined and used for coordinated material adding, and the welding guns and the outer wires are controlled through the control system, so that electric arc material adding is carried out according to a preset path;
Step (6), the power supply of the ultrasonic vibration device 1 is turned on, and the vibration amplitude and frequency of the welding wire are adjusted to enable the welding wire to generate proper vibration;
The angle and the direction of the molten pool visual sensing device 6 are adjusted to accurately monitor the flowing condition of the molten pool;
Step 8, starting material adding, monitoring flow information of a molten pool in the material adding process, including penetration and flow speed of the surface of the molten pool, and transmitting data to a control system 2;
The control system 2 adjusts the vibration amplitude and frequency of the ultrasonic vibration device 1, the wire feeding speed of the welding gun and the automatic wire feeder 3, the walking speed of the welding gun and the material adding current and voltage according to the flowing condition of the molten pool, if the detected penetration is smaller, the control system 2 adjusts the proper walking speed of the welding gun and properly increases the welding current and voltage, and if the detected surface flow rate of the molten pool is too low, the amplitude and frequency of the ultrasonic vibration device 1 are properly increased;
And (10) finishing the material adding, and sequentially closing the arc material adding platform 4, the multi-ultrasonic vibration auxiliary multi-wire system, the molten pool visual monitoring device 6 and the control system 2.
Example 1 high efficiency high quality multi-filament multi-arc additive manufacturing apparatus using ultrasonically vibrating wire thin walls of layered heterostructure materials.
Firstly, the substrate is polished by an angle grinder and greasy dirt is cleaned.
And secondly, installing and debugging the device, and installing the substrate on the upper surface of the welding workbench.
As shown in FIG. 4, the materials used for the material increase are 316L stainless steel and ER130S-G high-strength steel with the same volume fraction, the diameter of a welding wire is 1.2mm, the material used for the substrate is 304 stainless steel, the size is 200 multiplied by 150 multiplied by 10mm 3, the current is 160A, the voltage is 16V, the wire feeding speeds of a welding gun of the 316 stainless steel and an outer wire are 6m/min, the wire feeding speeds of a welding gun of the ER130S-G high-strength steel and an outer wire are 4.5m/min, the running speed of an electric arc material increase system platform is 5mm/S, the used shielding gas is argon, and the gas flow is 16L/min. Wherein the CMT arc material-adding system is provided with two welding guns, each welding gun is matched with a free wire feeder and an ultrasonic vibration device, wire feeding materials of the welding gun A and the automatic wire feeder A are 316L stainless steel, and wire feeding materials of the welding gun B and the automatic wire feeder B are ER130S-G high-strength steel.
The method comprises the steps of utilizing a CMT arc material adding system to add materials to a thin-wall structure, firstly utilizing a control system to open an ultrasonic vibration device to enable the ultrasonic vibration device to vibrate welding wires of an automatic wire feeder, setting output power to be 1kw, setting vibration frequency to be 20Khz, setting vibration amplitude to be 100um, then opening a molten pool visual monitoring device, setting emission angle to be 60 degrees, enabling the device to accurately monitor molten pool flowing conditions, starting material adding, utilizing a welding gun A and the automatic wire feeder A to deposit a layer of 316L stainless steel, cooling for 5min, continuing utilizing the welding gun B and the automatic wire feeder B to deposit a layer of ER130S-G high-strength steel on the basis, and conducting reciprocating deposition according to the deposition strategy to obtain layered heterogeneous structure material thin walls, monitoring the molten pool visual monitoring device in real time in the deposition process, feeding relevant information back to the control system, and adjusting the frequency, the amplitude of the ultrasonic vibration device and the wire feeder according to the molten pool conditions until the material adding process is finished.
And finally, after the material addition is finished, sequentially closing the arc material addition platform, the ultrasonic vibration device, the automatic wire feeder, the molten pool visual monitoring device and the control system.
It is to be understood that the above examples of the present invention are provided for clarity of illustration only and are not limiting of the embodiments of the present invention. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. Any modification, equivalent replacement, improvement, etc. which come within the spirit and principles of the invention are desired to be protected by the following claims.
Claims (8)
1. The utility model provides a high-efficient high-quality multiscrew multisphere vibration material manufacturing installation of ultrasonic vibration silk material which characterized in that includes
An arc material adding platform;
the additive gun body is fixed on the combined platform;
a multi-ultrasonic vibration assisted multi-filament system;
The molten pool visual monitoring device and the control system;
the material adding gun body fixing and combining platform is used for fixing a plurality of welding guns, the welding guns are contacted and fixed with the material adding gun body fixing and combining platform through bolts, and the welding guns are parallel to each other and keep a certain distance;
The multi-ultrasonic vibration auxiliary multi-wire system comprises a plurality of automatic wire feeders and ultrasonic vibration devices, and is fixed on a fixed combination platform of the material adding gun body;
the automatic wire feeder is used for conveying the outer wire to the lower part of the welding gun through a hose, and is controlled by a control system, and welding wires of the automatic wire feeder pass through the ultrasonic vibration device;
the ultrasonic vibration device comprises an ultrasonic generator, an ultrasonic converter and an amplitude transformer, the operation of the ultrasonic vibration device is controlled by a control system, the control system enables the ultrasonic generator to generate ultrasonic waves, the ultrasonic converter connected with the ultrasonic generator converts the ultrasonic waves into mechanical vibration, the amplitude transformer connected with the ultrasonic converter enhances the amplitude of the ultrasonic vibration, and the ultrasonic vibration device is connected with the material adding gun body fixing and combining platform through a clamp.
2. The high-efficiency high-quality multi-wire multi-arc additive manufacturing device for the ultrasonic vibration wire according to claim 1, wherein the additive gun body fixing combination platform is fixedly connected with the arc additive platform, and various connection modes of stud connection, welding and clamp connection can be adopted.
3. The high efficiency, high quality, multi-filament, multi-arc additive manufacturing apparatus for ultrasonically vibrating wire of claim 1, wherein the wire feed speed of the automatic wire feeder ranges from 0m/min to 20m/min.
4. The high efficiency, high quality, multi-filament, multi-arc additive manufacturing apparatus for ultrasonically vibrating wire of claim 1, wherein the control system adjusts the ultrasonic vibration frequency range to 20kHz to 2MHz, corresponding to an ultrasonic amplitude range of 30 μm to 150 μm.
5. The high-efficiency high-quality multi-wire multi-arc additive manufacturing device for the ultrasonic vibration wire according to claim 1, wherein the molten pool visual monitoring device is used for monitoring penetration data and surface flow speed and feeding back to the control system, and the control system further adjusts the frequency and amplitude of the ultrasonic vibration and the wire feeding speed of a welding gun.
6. The high-efficiency high-quality multi-wire multi-arc additive manufacturing device for the ultrasonic vibration wire according to claim 1, wherein the control system controls the output power, the vibration frequency and the vibration amplitude of the ultrasonic vibration device and the wire feeding speeds of the welding gun and the wire feeding machine in real time according to the feedback value, so that the molten pool is in an optimal flowing state, and the interface tissue is regulated and mixed with elements in the molten pool in a closed loop mode.
7. A method for manufacturing high-efficiency high-quality multi-wire multi-arc additive by using the device of any one of claims 1-6 for ultrasonic vibration wire,
When a large-sized component with inconsistent width is formed up and down, the number of welding guns and the number of outgoing wires carried on a welding gun fixing and combining platform are determined by a layering slicing method, a path is planned, a component is obtained by material addition, meanwhile, an ultrasonic vibration device carries out ultrasonic vibration on the wire of an automatic wire feeder, so that in the material addition process, ultrasonic is conducted to a molten pool through a welding wire, molten drop transition is improved by cavitation effect, acoustic flow effect, mechanical effect and thermal effect, molten pool flow is pushed, molten pool components are uniformly mixed, coarse grains are crushed, and finally microhardness and tensile strength mechanical property of the material addition component are improved.
8. The method according to claim 7, characterized in that it comprises the following steps:
the method comprises the steps of (1) constructing a three-dimensional solid model according to the shape of a part, slicing the three-dimensional solid model, importing the three-dimensional solid model into a control system, and generating a processing program file according to the model by the control system;
Step (2), polishing the substrate clean and fixing the substrate on a workbench;
Selecting proper welding guns and automatic wire feeders according to different wire materials and scene requirements, and adjusting proper additive parameters;
The ultrasonic vibration device is fixed through a clamp and is in close contact with welding wires of the automatic wire feeder, and one automatic wire feeder corresponds to one ultrasonic vibration device;
according to actual needs, adjusting the number of welding guns used in each layer of material adding and the number of welding wires passing through an ultrasonic vibration device in a control system, and planning a path;
Wherein, for the formed part with simple structure, a welding gun and a matched outer wire are adopted, and the outer wire is used for improving the material adding efficiency and reducing the heat input;
For large-sized forming parts with complex structures, combining and coordinating material adding by adopting a plurality of sets of welding guns and outer wire feeding, and controlling the welding guns and the outer wire feeding through a control system to perform electric arc material adding according to a preset path;
Step (6), switching on a power supply of the ultrasonic vibration device, and adjusting the amplitude and frequency of vibration of the welding wire to enable the welding wire to generate proper vibration;
The angle and the direction of the visual sensing device of the molten pool are adjusted to accurately monitor the flowing condition of the molten pool;
Step 8, starting material adding, monitoring flow information of a molten pool in the material adding process, including penetration and flow speed of the surface of the molten pool, and transmitting data to a control system;
The control system adjusts the vibration amplitude and frequency of the ultrasonic vibration device, the wire feeding speed of the welding gun and the automatic wire feeder, the walking speed of the welding gun and the additive current and voltage according to the flowing condition of the molten pool, if the penetration is monitored to be smaller, the control system adjusts the proper walking speed of the welding gun and properly increases the welding current and voltage, and if the surface flow rate of the molten pool is monitored to be too low, the amplitude and frequency of the ultrasonic vibration device are properly increased;
And (10) completing material adding, and sequentially closing an electric arc material adding system, a multi-ultrasonic vibration auxiliary multi-wire system, a molten pool visual monitoring device and a control system.
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| CN114160923A (en) * | 2021-12-29 | 2022-03-11 | 南京理工大学 | A triangular three-wire synergistic high-efficiency MIG arc additive device and method |
| CN116475530A (en) * | 2021-12-29 | 2023-07-25 | 南京理工大学 | A high-efficiency MIG arc material addition method and device for non-eutectic pool |
| CN117206673A (en) * | 2023-09-06 | 2023-12-12 | 南京航空航天大学 | A device and method for controlling the molten pool of laser welding of heterogeneous materials based on dual ultrasonic vibration-assisted dual wires |
| CN117718562A (en) * | 2024-02-01 | 2024-03-19 | 南京理工大学 | Device for adding material to auxiliary consumable electrode arc of ultrasonic vibration wire |
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