CN106124621B - A kind of electromagnetic acoustic monitoring system suitable for electron beam fuse increasing material manufacturing - Google Patents
A kind of electromagnetic acoustic monitoring system suitable for electron beam fuse increasing material manufacturing Download PDFInfo
- Publication number
- CN106124621B CN106124621B CN201610412548.6A CN201610412548A CN106124621B CN 106124621 B CN106124621 B CN 106124621B CN 201610412548 A CN201610412548 A CN 201610412548A CN 106124621 B CN106124621 B CN 106124621B
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- circuit
- electromagnetic acoustic
- annular magnet
- electron beam
- magnet
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
- G01N29/04—Analysing solids
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
- G01N29/22—Details, e.g. general constructional or apparatus details
- G01N29/24—Probes
- G01N29/2412—Probes using the magnetostrictive properties of the material to be examined, e.g. electromagnetic acoustic transducers [EMAT]
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2291/00—Indexing codes associated with group G01N29/00
- G01N2291/02—Indexing codes associated with the analysed material
- G01N2291/023—Solids
- G01N2291/0234—Metals, e.g. steel
Abstract
The invention belongs to electromagnetic acoustic fields, it discloses a kind of electromagnetic acoustics suitable for electron beam fuse increasing material manufacturing to monitor system comprising circuit, power amplification circuit, amplitude limiter circuit, primary amplifying circuit, filter circuit, ultimate amplifying circuit and A/D conversion circuit occur for electromagnetic acoustic focusing probe, computer, control circuit, high-frequency impulse.The exit of wire-feeding pipe is arranged in the electromagnetic acoustic focusing probe, and the welding wire come out from the wire-feeding pipe passes through the arc focus coil of the electromagnetic acoustic focusing probe.The computer, the control circuit, the high-frequency impulse occur circuit, the power amplification circuit, the arc focus coil, the amplitude limiter circuit, the primary amplifying circuit, the filter circuit, the ultimate amplifying circuit and the A/D conversion circuit and are sequentially connected and connect to form a closed loop circuit.The sensitivity of electromagnetic acoustic monitoring system of the invention is higher, and monitoring efficiency is higher, and structure is simple.
Description
Technical field
The invention belongs to electromagnetic acoustics to monitor field, more particularly, to a kind of electricity suitable for the manufacture of electron beam fuse
Magnetic ultrasonic monitoring system, electromagnetic acoustic monitoring system can real-time monitoring small-diameter circular cross section metal material (such as welding wire),
Sensitivity is higher, and structure is simpler.
Background technique
Electron beam fuse increasing material, which refers to, carries out layered shaping the three-dimensional CAD model of part using computer, obtains each layer
The two-dimensional silhouette information in section simultaneously generates machining path, using the electron beam of high-energy density as heat source, according to scheduled processing
The silk material of feeding is melted in path in vacuum chamber, successively accumulates, and the final near-net-shape for realizing densified metal component is directly made
It makes.Significantly different with traditional Material removal and bulk forming technical idea, electron beam fuse increases material and is swift in response and without mold,
Just because of this, electron beam fuse increases material and is widely used in the manufacture of densified metal component.In order to guarantee adding for product
Working medium amount, real-time monitoring electron beam fuse, which increases material process, to be necessary.
During electron beam fuse increases material, hot environment, molten bath are splashed, the factors such as mobile of workbench can all allow prison
Survey process becomes highly difficult.Existing monitoring method (such as monitoring camera-shooting, monitoring temperature) only solves the shadow of factor in a certain respect
It rings, detection effect is poor；In addition the diameter of welding wire is smaller, cause detection sensitivity lower, or even is difficult to monitor.
Summary of the invention
Aiming at the above defects or improvement requirements of the prior art, it is suitable for electron beam fuse the present invention provides one kind and increases material
The electromagnetic acoustic of manufacture monitors system, the electromagnetic acoustic monitoring system combination electron beam fuse increasing material manufacturing and electromagnetic acoustic prison
The characteristics of survey, structure and component connection relationship for electromagnetic acoustic focusing probe are designed.Electromagnetic acoustic of the invention
The exit of wire-feeding pipe is arranged in the electromagnetic acoustic focusing probe of monitoring system, and the welding wire come out from the wire-feeding pipe passes through described
Electromagnetic acoustic focusing probe, by the echo-signal in welding wire described in real-time monitoring, the state analyzed between welding wire and molten bath is closed
System, to realize the overall process of real-time monitoring electron beam fuse increasing material manufacturing.In addition, the electromagnetic acoustic monitoring system is sensitive
Degree is higher, and monitoring efficiency is higher, and structure is simple.
To achieve the above object, the present invention provides a kind of electromagnetic acoustic monitorings suitable for electron beam fuse increasing material manufacturing
System comprising circuit occurs for electromagnetic acoustic focusing probe, power circuit, computer, control circuit, high-frequency impulse, power is put
Big circuit, amplitude limiter circuit, primary amplifying circuit, filter circuit, ultimate amplifying circuit and A/D conversion circuit, it is characterised in that:
The exit of wire-feeding pipe is arranged in the electromagnetic acoustic focusing probe comprising shell, annular magnet and arc are poly-
Focal line circle, the shell offer the container through its opposite both ends；The annular magnet is housed in the container；
The arc focus coil is arranged in the annular magnet, and the welding wire come out from the wire-feeding pipe passes through the arc focal line
Circle；
The power circuit is electrically connected the computer and the control circuit, is used for as the calculating and the control
Circuit processed provides electric energy；
Circuit, the power amplification circuit, the arc occur for the computer, the control circuit, the high-frequency impulse
Shape focus coil, the amplitude limiter circuit, the primary amplifying circuit, the filter circuit, the ultimate amplifying circuit and described
A/D conversion circuit, which is sequentially connected, to be connect to form a closed loop circuit.
Further, the container is stepped groove comprising three cascaded surfaces being parallel to each other；The annular magnet packet
First annular magnet, the second annular magnet and the third annular magnetic for including from up to down and being separately positioned on three cascaded surfaces
Iron, the interior circular diameter of the first annular magnet, the interior circular diameter of second annular magnet and the third annular magnet
Inner circle radius is gradually reduced.
Further, the electromagnetic acoustic focusing probe further includes non-magnet material piece, the non-magnet material piece setting
Between the first annular magnet, second annular magnet and the third annular magnet.
Further, the shell is made of magnetic separator.
In general, through the invention it is contemplated above technical scheme is compared with the prior art, it is provided by the invention suitable
Electromagnetic acoustic for electron beam fuse increasing material manufacturing monitors system, and the outlet of wire-feeding pipe is arranged in electromagnetic acoustic focusing probe
Place, the welding wire come out from the wire-feeding pipe pass through the electromagnetic acoustic focusing probe, pass through returning in welding wire described in real-time monitoring
Wave signal analyzes the state relation between the welding wire and molten bath, to realize real-time monitoring electron beam fuse increasing material manufacturing
Overall process.In addition, the sensitivity of the electromagnetic acoustic monitoring system is higher, structure is simple, and monitoring efficiency is higher.
Detailed description of the invention
Fig. 1 is the electromagnetic acoustic monitoring system suitable for the increasing material manufacturing of electron beam fuse that better embodiment of the present invention provides
The structural block diagram of system.
Fig. 2 is the structural schematic diagram of the annular magnet of the electromagnetic acoustic monitoring system in Fig. 1.
Fig. 3 is the structural schematic diagram of the arc focus coil of the electromagnetic acoustic monitoring system in Fig. 1.
Fig. 4 is the top view of the electromagnetic acoustic focusing probe of the electromagnetic acoustic monitoring system in Fig. 1.
Fig. 5 is the partial sectional view of the electromagnetic acoustic focusing probe in Fig. 4.
In all the appended drawings, identical appended drawing reference is used to denote the same element or structure, in which: 1- annular magnet,
The first annular magnet of 101-, the second annular magnet of 102-, 103- third annular magnet, 2- arc focus coil, 3- circuit power,
Circuit, 6- power amplification circuit, 7- electromagnetic acoustic focusing probe, 8- amplitude limiter circuit, 9- occur for 4- control circuit, 5- high-frequency impulse
Primary amplifying circuit, 10- filter circuit, the ultimate amplifying circuit of 11-, 12-A/D conversion circuit, 13- computer, 14- shell,
141- container, the outer surface 142-.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, with reference to the accompanying drawings and embodiments, right
The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and
It is not used in the restriction present invention.As long as in addition, technical characteristic involved in the various embodiments of the present invention described below
Not constituting a conflict with each other can be combined with each other.
It please refers to Fig.1 to Fig.3, the electromagnetism suitable for the increasing material manufacturing of electron beam fuse that better embodiment of the present invention provides
Ultrasonic monitoring system comprising circuit power 3, control circuit 4, high-frequency impulse occur circuit 5, power amplification circuit 6, electromagnetism and surpass
Sound focusing probe 7, amplitude limiter circuit 8, primary amplifying circuit 9, filter circuit 10, ultimate amplifying circuit 11, A/D conversion circuit 12 and
Computer 13.The power circuit 3 is electrically connected the computer 13 and the control circuit 4, is used for as the computer
13 and the control circuit 4 provide electric energy.Circuit 5, institute occur for the computer 13, the control circuit 4, the high-frequency impulse
Power amplification circuit 6, the arc focus coil 2 of the electromagnetic acoustic focusing probe 7, the amplitude limiter circuit 8, the primary is stated to put
Big circuit 9, the filter circuit 10, the ultimate amplifying circuit 11 and the A/D conversion circuit 12 are sequentially connected and connect to form one
A closed loop circuit.
Fig. 4 and Fig. 5 is please referred to, the electromagnetic acoustic focusing probe 7 includes shell 14, annular magnet 1 and arc focal line
Circle 2.The annular magnet 1 is arranged in the shell 14, and the arc coil 2 is arranged in the annular magnet 1.
The shell 14 is substantially cylindrical comprising outer surface 142.The shell 14 is also provided with container 141, institute
Container 141 is stated for accommodating the annular magnet 1 and the arc focus coil 2.The container 141 is stepped groove,
It is parallel to each other including three and cascaded surface vertical with the outer surface 142, three cascaded surfaces is used to carry the ring
Shape magnet 1.In present embodiment, the shell 14 is made of magnetic separator.
The annular magnet 1 is made of NdFeB material, and remanent magnetism is in 1T or more.By include from top to bottom setting and it is interior
First annular magnet 101, the second annular magnet 102 and the third annular magnet 103 that circular diameter is gradually reduced, it is described first annular
Magnet 101, second annular magnet 102 and the third annular magnet 103 are successively spaced setting, and are filled between three
Magnetic separator piece.The first annular magnet 101, second annular magnet 102 and the third annular magnet 103 are set respectively
It sets on three cascaded surfaces of the container 141.In present embodiment, the arc focus coil 2 is by Cu alloy material
It is manufactured, correspond to the annular distance of the first annular magnet 101, the annular distance of second annular magnet 102 and the third ring
With sector format, voluntarily coiling forms the annular distance of shape magnet 103；The central axis and the annular magnet of the arc focus coil 2
1 central axis substantially overlaps.
When work, firstly, the electromagnetic acoustic focusing probe 7 to be arranged in the exit of wire-feeding pipe, from the wire-feeding pipe
Welding wire out passes through the arc focus coil 2.Later, the circuit power 3 is connected, the computer 13 starts the control
Circuit 4 processed, and suitable input parameter is set.Then, the control circuit 4 controls the high-frequency impulse generation circuit 5 and generates
Hf and hv pulse signal with preset frequency and predetermined number；Then, the power amplification circuit 6 is by the high-frequency and high-voltage
Pulse signal is transferred to the arc focus coil 2 after carrying out power amplification；The hf and hv pulse signal is alternating signal,
The alternating magnetic field that focusing can be generated when it is in the arc focus coil 2 around the arc focus coil 2, is in institute
Focusing vortex can be generated by stating in the welding wire in alternating magnetic field, magnetic field and the alternating magnetic field in the annular magnet 1
Under collective effect, the vortex is caused the welding wire surface vibration and generates focus type ultrasonic wave by electromagnetic force, described super
Sound wave is propagated along the welding wire is axial towards molten bath direction, due to during electron beam fuse increases material, the welding wire end
State changes, and different states will lead to different ultrasound echo signals, and different ultrasound echo signals travel to the arc
Near shape focus coil 2, under the action of annular magnet 1, different echo-signals can be focused in the electromagnetic acoustic and be visited
Different pulse signals, the pulse signal transmission to the amplitude limiter circuit 8 are generated in first 7 arc focus coil 2；With
Afterwards, the amplitude limiter circuit 8 is transferred to the primary amplifying circuit 9 after the pulse signal is removed high pressure interference signal；Then,
The primary amplifying circuit 9 is transferred to the filter circuit 10 after the pulse signal received is carried out first time amplification；It is described
Filter circuit 10 is transferred to the ultimate amplifying circuit after further removing interference signal to the received pulse signal
11；Then, the ultimate amplifying circuit 11 is transferred to the A/D conversion after amplifying processing to received pulse signal
Circuit 12；Then, received pulse signal is converted into digital signal by the A/D conversion circuit 12, and by the number
Signal is transferred to the computer 13；Finally, the computer 13 is analyzed the received digital signal, is located
Reason, display, user is according to different displays as a result, the state relation between the welding wire and the molten bath can be analyzed, in real time
It monitors electron beam fuse and increases material process, to obtain forming quality excellent product or components.If gained signal is bad or has
Alarm signal issues, and can be handled by adjusting input parameter.
Electromagnetic acoustic provided by the invention suitable for the increasing material manufacturing of electron beam fuse monitors system, and electromagnetic acoustic focuses
The exit of wire-feeding pipe is arranged in probe, and the welding wire come out from the wire-feeding pipe passes through the electromagnetic acoustic focusing probe, passes through
Echo-signal in welding wire described in real-time monitoring analyzes the state relation between the welding wire and molten bath, to realize prison in real time
Survey the overall process of electron beam fuse increasing material manufacturing.In addition, the sensitivity of the electromagnetic acoustic monitoring system is higher, structure is simple,
Monitoring efficiency is higher.
As it will be easily appreciated by one skilled in the art that the foregoing is merely illustrative of the preferred embodiments of the present invention, not to
The limitation present invention, any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should all include
Within protection scope of the present invention.
Claims (4)
1. a kind of electromagnetic acoustic suitable for electron beam fuse increasing material manufacturing monitors system comprising electromagnetic acoustic focusing probe
(7), circuit (5), power amplification circuit (6), limit occur for power circuit (3), computer (13), control circuit (4), high-frequency impulse
Width circuit (8), primary amplifying circuit (9), filter circuit (10), ultimate amplifying circuit (11) and A/D conversion circuit (12), it is special
Sign is:
The exit of wire-feeding pipe is arranged in the electromagnetic acoustic focusing probe (7) comprising shell (14), annular magnet (1) and
Arc focus coil (2), the shell (14) offer the container (141) through its opposite both ends；The annular magnet
(1) it is housed in the container (141)；Arc focus coil (2) setting is in the annular magnet (1), receiving
In the container (141)；The welding wire come out from the wire-feeding pipe passes through the arc focus coil (2)；
The power circuit (3) is electrically connected the computer (13) and the control circuit (4), be used for as the calculating and
The control circuit (4) provides electric energy；
Circuit (5), the power amplification circuit occur for the computer (13), the control circuit (4), the high-frequency impulse
(6), the arc focus coil (2), the amplitude limiter circuit (8), the primary amplifying circuit (9), the filter circuit (10),
The ultimate amplifying circuit (11) and the A/D conversion circuit (12), which are sequentially connected, to be connect to form a closed loop circuit.
2. monitoring system suitable for the electromagnetic acoustic of electron beam fuse increasing material manufacturing as described in claim 1, it is characterised in that:
The container (141) is stepped groove comprising three cascaded surfaces being parallel to each other；The annular magnet include from up to down and
First annular magnet (101), the second annular magnet (102) and the third annular magnet being separately positioned on three cascaded surfaces
(103), the interior circular diameter of the first annular magnet (101), the interior circular diameter of second annular magnet (102) and described
The inner circle radius of three annular magnets (103) is gradually reduced.
3. monitoring system suitable for the electromagnetic acoustic of electron beam fuse increasing material manufacturing as claimed in claim 2, it is characterised in that:
The electromagnetic acoustic focusing probe (7) further includes non-magnet material piece, and the non-magnet material piece is arranged described first annular
Between magnet (101), second annular magnet (102) and the third annular magnet (103).
4. monitoring system suitable for the electromagnetic acoustic of electron beam fuse increasing material manufacturing as described in claim 1, it is characterised in that:
The shell (14) is made of magnetic separator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610412548.6A CN106124621B (en) | 2016-06-13 | 2016-06-13 | A kind of electromagnetic acoustic monitoring system suitable for electron beam fuse increasing material manufacturing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610412548.6A CN106124621B (en) | 2016-06-13 | 2016-06-13 | A kind of electromagnetic acoustic monitoring system suitable for electron beam fuse increasing material manufacturing |
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| Publication Number | Publication Date |
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| CN106124621A CN106124621A (en) | 2016-11-16 |
| CN106124621B true CN106124621B (en) | 2019-06-11 |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| EP3574317A4 (en) * | 2017-01-25 | 2020-09-23 | Howmet Aerospace Inc. | Additively manufactured parts and related methods |
| CN109269986B (en) * | 2018-09-28 | 2021-12-24 | 东南大学 | Phased array laser ultrasonic detection system |
| CN110243927B (en) * | 2019-06-28 | 2021-04-06 | 华中科技大学 | Electromagnetic ultrasonic detection system and detection method |
| CN110369825B (en) * | 2019-07-31 | 2020-12-08 | 华中科技大学 | Electromagnetic ultrasonic method and system for inhibiting hump of molten metal in additive manufacturing |
| CN110421169B (en) * | 2019-08-29 | 2021-04-06 | 华中科技大学 | Online defect repairing method in metal additive manufacturing process |
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