Electromagnetic ultrasonic automatic scanning device and method for distribution state of residual stress of large steel / aluminum alloy plate

Abstract

The application discloses a large steel / aluminum alloy plate residual stress distribution state electromagnetic ultrasonic automatic scanning device and method, the device comprises a frame, an X-axis moving assembly, a Y-axis moving assembly, a Z-axis moving assembly, an electromagnetic ultrasonic probe and a detection moving control unit; the frame is provided with a work station for accommodating a workpiece to be detected; the detection moving control unit is in control connection with the X-axis moving assembly, the Y-axis moving assembly, the Z-axis moving assembly and the electromagnetic ultrasonic probe. The application overcomes the problems of low efficiency, complex operation and being not conducive to rapid detection in the prior art, greatly improves the detection efficiency, is simple to operate, is dry coupled, has lower requirements on the detection environment, and is conducive to rapid detection in large quantities.

Description

Technical Field

[0001] This invention relates to the field of residual stress detection technology for workpieces, and in particular to an electromagnetic ultrasonic automatic scanning device and method for detecting the residual stress distribution of large steel / aluminum alloy plates. Background Technology

[0002] The main function of the electromagnetic ultrasonic automatic scanning device for residual stress distribution in large steel / aluminum alloy plates is to quickly scan the residual stress of the plates. Existing technology uses a water bath piezoelectric ultrasonic residual stress scanning method, placing the plate in a water bath and using a triaxial scanning device to drive the piezoelectric probe to scan for residual stress on the plate. A detailed description is as follows: This device consists of a plate stress scanning frame, a piezoelectric ultrasonic probe, an ultrasonic acquisition device, and intelligent residual stress evaluation software. The scanning frame carries the ultrasonic probe, emitting ultrasonic signals and moving it along a predetermined trajectory on the metal plate; the piezoelectric ultrasonic probe is the main core component, converting electrical signals into ultrasonic signals that are emitted onto the metal plate; the ultrasonic acquisition device collects and digitizes the ultrasonic stress data.

[0003] However, this technology still has some drawbacks, such as low efficiency, complex operation, the need for water bath testing, and its inability to facilitate rapid testing.

[0004] Therefore, there is an urgent need for a rapid detection device for residual stress in large steel / aluminum alloy plates. Summary of the Invention

[0005] In view of this, the present invention proposes an automatic electromagnetic ultrasonic scanning device and method for detecting the residual stress distribution of large steel / aluminum alloy plates. The technical solution of the present invention is as follows: The first aspect of this invention discloses an automatic electromagnetic ultrasonic scanning device for residual stress distribution in large steel / aluminum alloy plates, comprising a frame, an X-axis moving assembly, a Y-axis moving assembly, a Z-axis moving assembly, an electromagnetic ultrasonic probe, and a detection and movement control unit; The Z-axis moving component is slidably disposed on the Y-axis moving component; The Y-axis moving component is slidably disposed on the X-axis moving component; The X-axis moving component is mounted on the frame; The frame is also provided with a station to accommodate the workpiece to be tested; The electromagnetic ultrasonic probe is mounted on the Z-axis moving assembly; The detection and movement control unit is fixed to the frame; The detection motion control unit is controlled to be connected to the X-axis motion component, the Y-axis motion component, the Z-axis motion component, and the electromagnetic ultrasound probe. The detection mobile control unit has a built-in ultrasonic transceiver board. The ultrasonic transceiver board is used to send electrical signals and receive information from the electromagnetic ultrasonic probe. The detection motion control unit is used to receive digital signals from the ultrasonic transceiver board and analyze stress conditions.

[0006] Furthermore, the Z-axis movement assembly includes a Z-axis movement axis and a Z-axis motor; The Z-axis motor is used to drive the electromagnetic ultrasonic probe to move on the Z-axis moving axis.

[0007] Furthermore, the Y-axis movement assembly includes a Y-axis movement axis and a Y-axis motor; The Y-axis motor is used to drive the Z-axis moving component to move on the Y-axis moving axis.

[0008] Furthermore, the X-axis moving assembly includes an X-axis moving axis and an X-axis motor; The X-axis motor is used to drive the Y-axis moving component to move on the X-axis moving axis.

[0009] Furthermore, the X-axis moving axis includes a first X-axis moving axis and a second X-axis moving axis; The X-axis motor includes a first X-axis motor and a second X-axis motor; The first end of the Y-axis movable axis is slidably disposed on the X-axis first movable axis; The second end of the Y-axis movable axis is slidably disposed on the X-axis second movable axis.

[0010] Furthermore, the bottom of the frame is equipped with casters; Furthermore, this also includes the host computer; The host computer is connected to the detection and motion control unit via wired or wireless means.

[0011] The second aspect of this invention discloses an automatic electromagnetic ultrasonic scanning method for the residual stress distribution of large steel / aluminum alloy plates, using the apparatus disclosed in the first aspect of this invention. The method includes the following steps: Place the sheet material to be tested at the testing station within the frame; The detection motion control unit controls the movement of the X-axis motion component, Y-axis motion component and Z-axis motion component, thereby driving the electromagnetic ultrasonic probe to scan the plate to be tested along a predetermined trajectory; The ultrasonic transceiver board sends electrical signals for scanning to the electromagnetic ultrasonic probe; An electromagnetic ultrasonic probe converts electrical signals into ultrasonic signals and transmits them onto the substrate to be tested. The ultrasonic transceiver board receives the ultrasonic signal fed back by the electromagnetic ultrasonic probe and converts the ultrasonic signal into a digital signal; The ultrasonic transceiver board converts the ultrasonic signal into a digital signal and transmits it to the control unit 7; The control unit analyzes the stress distribution based on digital signals and draws a stress distribution diagram.

[0012] Furthermore, the calculation process for the stress distribution is as follows: Y = A * (T1 - T); In the above formula, Y is the stress, T is the peak value of the digital signal at the first time node; T1 is the peak value of the digital signal at the second time node, and A is the stress coefficient of the workpiece to be tested.

[0013] The advantages of this invention are as follows: This invention overcomes the problems of low efficiency, complex operation, and unfavorable rapid detection in traditional water bath methods for detecting residual stress in sheet materials. It greatly improves detection efficiency, is simple to operate, dry-coupled, and has lower requirements for the detection environment, which is conducive to rapid detection of large quantities. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only one embodiment of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a schematic diagram of the structure of one embodiment of the present invention; Figure 2 This is a flowchart for calculating the stress distribution of an ultrasonic transceiver board.

[0016] The symbols in the above figures have the following meanings: 1. X-axis first motor; 2. Y-axis movement axis; 3. Electromagnetic ultrasonic probe; 4. Z-axis motor; 5. Z-axis movement axis; 6. Second motor on the X-axis; 7. Detect the mobile control unit; 8. Y-axis motor; 9. The second moving axis of the X-axis; 10. Workpiece to be inspected. Detailed Implementation

[0017] The technical solutions of the present invention will now be clearly and completely described with reference to the embodiments and accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0018] Unless otherwise defined, all technical and scientific terms used in this invention have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains; the terminology used in the detailed description is for the purpose of describing particular embodiments only and is not intended to limit the invention; the terms “comprising” and “having”, and any variations thereof, in the specification, claims, and foregoing description of the drawings are intended to cover non-exclusive inclusion.

[0019] In the description of specific embodiments of the present invention, technical terms such as "first" and "second" are used only to distinguish different objects and should not be construed as indicating or implying relative importance or implicitly specifying the number, specific order, or primary and secondary relationship of the indicated technical features. In the description of the embodiments of the present invention, "multiple" means two or more, unless otherwise explicitly defined.

[0020] In this invention, the reference to "embodiment" means that a specific feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of the invention. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described in this invention can be combined with other embodiments.

[0021] In the description of the embodiments of this invention, the term "and / or" is merely a description of the relationship between associated objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. Additionally, in this invention, the character " / " generally indicates that the preceding and following associated objects have an "or" relationship.

[0022] It should be noted that, for ease of description, all identical technical features are labeled with the same symbols in the following embodiments.

[0023] The technical solution of the present invention will be further illustrated by the following examples.

[0024] like Figure 1 As shown, in a specific embodiment, an electromagnetic ultrasonic automatic scanning device for residual stress distribution of large steel / aluminum alloy plates includes a frame, an X-axis moving assembly, a Y-axis moving assembly, a Z-axis moving assembly, an electromagnetic ultrasonic probe 3, and a detection and movement control unit 7. The Z-axis moving component is slidably mounted on the Y-axis moving component; The Y-axis moving component can be slidably mounted on the X-axis moving component; The X-axis movement component is mounted on the frame; The frame also has a station for accommodating the workpiece 10 to be inspected; The electromagnetic ultrasonic probe 3 is mounted on the Z-axis moving assembly; The detection and movement control unit 7 is fixed to the frame; The detection movement control unit 7 is connected to the X-axis movement assembly, Y-axis movement assembly, Z-axis movement assembly, and electromagnetic ultrasonic probe 3. The detection mobile control unit 7 has a built-in ultrasonic transceiver board; The ultrasonic transceiver board is used to send electrical signals and receive information from the electromagnetic ultrasonic probe 3. The detection movement control unit 7 is used to receive digital signals from the ultrasonic transceiver board and analyze the stress situation. In this embodiment, the Z-axis moving component includes a Z-axis moving axis 5 and a Z-axis motor 4; Z-axis motor 4 is used to drive the electromagnetic ultrasonic probe 3 to move on the Z-axis moving axis 5.

[0025] Furthermore, the Y-axis movement assembly includes a Y-axis movement axis 2 and a Y-axis motor 8; Y-axis motor 8 is used to drive the Z-axis moving component to move on the Y-axis moving axis 2.

[0026] In this embodiment, the X-axis moving component includes an X-axis moving axis and an X-axis motor; The X-axis motor is used to drive the Y-axis moving component to move along the X-axis moving axis.

[0027] In this embodiment, the X-axis moving axis includes a first X-axis moving axis and a second X-axis moving axis 9; The X-axis motors include X-axis first motor 1 and X-axis second motor 6; The first end of the Y-axis moving axis 2 is slidably disposed on the X-axis first moving axis; The second end of the Y-axis moving axis 2 is slidably mounted on the X-axis second moving axis 9.

[0028] In some implementations, casters are provided at the bottom of the frame.

[0029] The purpose of the casters is to facilitate manual or mechanical movement of the frame. For materials that are difficult to move, a freely movable frame adapts well to such environments. Additionally, the casters have a certain height, allowing materials placed under the frame to be secured by gravity, facilitating inspection.

[0030] The specific operation process of this embodiment is as follows: Place the workpiece 10 (plate) to be inspected on the inspection station inside the frame; The detection movement control unit 7 controls the movement of the X-axis movement component, the Y-axis movement component and the Z-axis movement component, thereby driving the electromagnetic ultrasonic probe 3 to scan the workpiece 10 to be inspected according to a predetermined trajectory. The ultrasonic transceiver board sends electrical signals for scanning to the electromagnetic ultrasonic probe 3; The electromagnetic ultrasonic probe 3 converts electrical signals into ultrasonic signals and transmits them onto the workpiece 10 to be tested. The ultrasonic transceiver board receives the ultrasonic signal fed back by the electromagnetic ultrasonic probe 3 and converts the ultrasonic signal into a digital signal. The ultrasonic transceiver board converts the ultrasonic signal into a digital signal and transmits it to the control unit 7; The control unit 7 analyzes the stress distribution based on digital signals and draws a stress distribution diagram.

[0031] like Figure 2 As shown, the calculation process for the stress distribution is as follows: Y = A * (T1 - T); In the above formula, Y is the stress, T is the peak value of the digital signal at the first time node; T1 is the peak value of the digital signal at the second time node, and A is the stress coefficient of the workpiece to be tested.

[0032] It should be noted that this embodiment does not only calculate the stress distribution between two time points, but also records the digital signal peaks at multiple time points by following the motion of the electromagnetic ultrasonic probe and calculates the stress changes between multiple time points to obtain a stress distribution map. T1 and T are only examples, taking the initial motion as an example, to calculate the stress between the first time point T1 and the initial time point T.

[0033] It should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An automatic electromagnetic ultrasonic scanning device for residual stress distribution in large steel / aluminum alloy plates, characterized in that, It includes a frame, an X-axis movement assembly, a Y-axis movement assembly, a Z-axis movement assembly, an electromagnetic ultrasonic probe, and a detection movement control unit; The Z-axis moving component is slidably disposed on the Y-axis moving component; The Y-axis moving component is slidably disposed on the X-axis moving component; The X-axis moving component is mounted on the frame; The frame is also provided with a station to accommodate the workpiece to be tested; The electromagnetic ultrasonic probe is mounted on the Z-axis moving assembly; The detection and movement control unit is fixed to the frame; The detection motion control unit is controlled to be connected to the X-axis motion component, the Y-axis motion component, the Z-axis motion component, and the electromagnetic ultrasound probe. The detection mobile control unit has a built-in ultrasonic transceiver board. The ultrasonic transceiver board is used to send electrical signals and receive information from the electromagnetic ultrasonic probe. The detection motion control unit is used to receive digital signals from the ultrasonic transceiver board and analyze stress conditions.

2. The electromagnetic ultrasonic automatic scanning device for residual stress distribution in large steel / aluminum alloy plates according to claim 1, characterized in that, The Z-axis moving assembly includes a Z-axis moving axis and a Z-axis motor; The Z-axis motor is used to drive the electromagnetic ultrasonic probe to move on the Z-axis moving axis.

3. The electromagnetic ultrasonic automatic scanning device for residual stress distribution in large steel / aluminum alloy plates according to claim 2, characterized in that, The Y-axis moving component includes a Y-axis moving axis and a Y-axis motor; The Y-axis motor is used to drive the Z-axis moving component to move on the Y-axis moving axis.

4. The electromagnetic ultrasonic automatic scanning device for residual stress distribution in large steel / aluminum alloy plates according to claim 3, characterized in that, The X-axis moving assembly includes an X-axis moving axis and an X-axis motor; The X-axis motor is used to drive the Y-axis moving component to move on the X-axis moving axis.

5. The electromagnetic ultrasonic automatic scanning device for residual stress distribution in large steel / aluminum alloy plates according to claim 4, characterized in that, The X-axis moving axis includes a first X-axis moving axis and a second X-axis moving axis; The X-axis motor includes a first X-axis motor and a second X-axis motor; The first end of the Y-axis movable axis is slidably disposed on the X-axis first movable axis; The second end of the Y-axis movable axis is slidably disposed on the X-axis second movable axis.

6. The electromagnetic ultrasonic automatic scanning device for residual stress distribution in large steel / aluminum alloy plates according to claim 1, characterized in that, The frame is equipped with casters at the bottom.

7. The electromagnetic ultrasonic automatic scanning device for residual stress distribution in large steel / aluminum alloy plates according to claim 1, characterized in that, It also includes a host computer; the host computer is connected to the detection and motion control unit via wired or wireless means.

8. An automatic electromagnetic ultrasonic scanning method for residual stress distribution in large steel / aluminum alloy plates, using the apparatus described in any one of claims 1-7, characterized in that... The method includes the following steps: Place the sheet material to be tested at the testing station within the frame; The detection motion control unit controls the movement of the X-axis motion component, Y-axis motion component and Z-axis motion component, thereby driving the electromagnetic ultrasonic probe to scan the plate to be tested along a predetermined trajectory; The ultrasonic transceiver board sends electrical signals for scanning to the electromagnetic ultrasonic probe; An electromagnetic ultrasonic probe converts electrical signals into ultrasonic signals and transmits them onto the substrate to be tested. The ultrasonic transceiver board receives the ultrasonic signal fed back by the electromagnetic ultrasonic probe and converts the ultrasonic signal into a digital signal; The ultrasonic transceiver board converts ultrasonic signals into digital signals and transmits them to the control unit; The control unit analyzes the stress distribution based on digital signals and draws a stress distribution diagram.

9. The method according to claim 8, characterized in that, The calculation process for the stress distribution is as follows: Y = A * (T1 - T); In the above formula, Y is the stress, T is the peak value of the digital signal at the first time node; T1 is the peak value of the digital signal at the second time node, and A is the stress coefficient of the workpiece to be tested.

Images