CN113030271A - Ultrasonic detection method for welding quality of steel-plastic composite pipe - Google Patents
Ultrasonic detection method for welding quality of steel-plastic composite pipe Download PDFInfo
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- CN113030271A CN113030271A CN201911358052.5A CN201911358052A CN113030271A CN 113030271 A CN113030271 A CN 113030271A CN 201911358052 A CN201911358052 A CN 201911358052A CN 113030271 A CN113030271 A CN 113030271A
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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
- G01N29/06—Visualisation of the interior, e.g. acoustic microscopy
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- 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
- G01N2291/26—Scanned objects
- G01N2291/267—Welds
- G01N2291/2675—Seam, butt welding
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- Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
Abstract
The invention discloses an ultrasonic detection method for welding quality of a steel-plastic composite pipe, which comprises the following steps: firstly, setting parameters of ultrasonic scanning; secondly, resetting the ultrasonic probe; thirdly, performing ultrasonic scanning on the welding position of the steel-plastic composite pipe; fourthly, generating a gray scale image of the welding seam of the steel-plastic composite pipe. The method has the advantages of simple steps, convenient realization, high detection accuracy, good use effect and convenient popularization by detecting the welding quality of the steel-plastic composite pipe through ultrasonic waves.
Description
Technical Field
The invention belongs to the technical field of welding of steel-plastic composite pipes, and particularly relates to an ultrasonic detection method for welding quality of a steel-plastic composite pipe.
Background
The steel-plastic composite pipe is produced with seamless steel pipe and welded steel pipe as base pipe and has inner wall coated with polyethylene powder paint or epoxy resin paint with high adhesion, high corrosion resistance and food level hygiene. The water-supplying galvanized internal plastic-coated composite steel pipe is an upgraded product of the traditional galvanized pipe and is generally connected by screw threads. However, the sealing manner of the threaded connection has the defects of poor interface sealing, poor rigidity and the like, people also begin to connect the steel-plastic composite pipes together by using the welding manner, but during welding, the quality of the welded part needs to be detected after the welding is finished, so that the welding quality is ensured, the labor intensity of workers is increased, and the working efficiency is reduced.
Disclosure of Invention
The technical problem to be solved by the invention is to provide an ultrasonic detection method for the welding quality of the steel-plastic composite pipe, aiming at the defects in the prior art, the method is simple in steps and convenient to realize, the welding quality of the steel-plastic composite pipe is detected by ultrasonic, the detection accuracy is high, the use effect is good, and the popularization is convenient.
In order to solve the technical problems, the invention adopts the technical scheme that: an ultrasonic detection method for welding quality of a steel-plastic composite pipe comprises the following steps:
step one, setting parameters of ultrasonic scanning;
step two, resetting the ultrasonic probe;
step three, performing ultrasonic scanning on the welding position of the steel-plastic composite pipe;
and fourthly, generating a gray scale image of the welding seam of the steel-plastic composite pipe.
In the ultrasonic detection method for the welding quality of the steel-plastic composite pipe, in the first step, the ultrasonic scanning parameters comprise scanning length, scanning width, scanning speed, scanning step pitch, scanning track and sampling frequency.
In the ultrasonic detection method for the welding quality of the steel-plastic composite pipe, the specific process of performing ultrasonic scanning on the welding position of the steel-plastic composite pipe in the third step is as follows: driving an ultrasonic probe to scan the welding position of the steel-plastic composite pipe according to the scanning speed and the scanning track by a motor until the surface of the welding position of the whole steel-plastic composite pipe is scanned according to the scanning length and the scanning width; when the ultrasonic probe reaches a scanning point, the ultrasonic pulse generator sends out an excitation pulse to act on the ultrasonic probe to emit an ultrasonic signal, the ultrasonic signal is transmitted along the radial direction of the welding position of the steel-plastic composite pipe and is reflected in the steel-plastic composite material, and the ultrasonic pulse receiving generator receives the reflected ultrasonic pulse signal.
The ultrasonic testing method for the welding quality of the steel-plastic composite pipe comprises the following specific steps of: and drawing a gray scale image of the ultrasonic imaging of the interface of the layered metal composite material according to the amplitude of the ultrasonic signal at each scanning point through a gray scale image imaging module.
The ultrasonic detection method for the welding quality of the steel-plastic composite pipe comprises the steps of scanning the steel-plastic composite pipe by 0.5 cm-100 cm, scanning the steel-plastic composite pipe by 0.1 cm-50 cm, scanning at 0.1 mm/min-3 mm/min and scanning at 0.01 mm-0.5 mm.
Compared with the prior art, the invention has the following advantages: the method has the advantages of simple steps, convenient realization, high detection accuracy, good use effect and convenient popularization by detecting the welding quality of the steel-plastic composite pipe through ultrasonic waves.
The technical solution of the present invention is further described in detail by the accompanying drawings and embodiments.
Drawings
FIG. 1 is a block diagram of the process flow of the present invention.
Detailed Description
As shown in FIG. 1, the ultrasonic testing method for the welding quality of the steel-plastic composite pipe comprises the following steps:
step one, setting parameters of ultrasonic scanning;
step two, resetting the ultrasonic probe;
step three, performing ultrasonic scanning on the welding position of the steel-plastic composite pipe;
and fourthly, generating a gray scale image of the welding seam of the steel-plastic composite pipe.
In the method, the ultrasonic scanning parameters in the first step comprise scanning length, scanning width, scanning speed, scanning step pitch, scanning track and sampling frequency.
In the method, the specific process of performing ultrasonic scanning on the welding position of the steel-plastic composite pipe in the step three is as follows: driving an ultrasonic probe to scan the welding position of the steel-plastic composite pipe according to the scanning speed and the scanning track by a motor until the surface of the welding position of the whole steel-plastic composite pipe is scanned according to the scanning length and the scanning width; when the ultrasonic probe reaches a scanning point, the ultrasonic pulse generator sends out an excitation pulse to act on the ultrasonic probe to emit an ultrasonic signal, the ultrasonic signal is transmitted along the radial direction of the welding position of the steel-plastic composite pipe and is reflected in the steel-plastic composite material, and the ultrasonic pulse receiving generator receives the reflected ultrasonic pulse signal.
In the method, the specific process of generating the gray-scale map of the welding seam of the steel-plastic composite pipe in the step four is as follows: and drawing a gray scale image of the ultrasonic imaging of the interface of the layered metal composite material according to the amplitude of the ultrasonic signal at each scanning point through a gray scale image imaging module.
In the method, the scanning length is 0.5 cm-100 cm, the scanning width is 0.1 cm-50 cm, the scanning speed is 0.1 mm/min-3 mm/min, and the scanning step distance is 0.01 mm-0.5 mm.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and all simple modifications, changes and equivalent structural changes made to the above embodiment according to the technical spirit of the present invention still fall within the protection scope of the technical solution of the present invention.
Claims (5)
1. An ultrasonic detection method for welding quality of a steel-plastic composite pipe is characterized by comprising the following steps: the method comprises the following steps:
step one, setting parameters of ultrasonic scanning;
step two, resetting the ultrasonic probe;
step three, performing ultrasonic scanning on the welding position of the steel-plastic composite pipe;
and fourthly, generating a gray scale image of the welding seam of the steel-plastic composite pipe.
2. The ultrasonic testing method for the welding quality of the steel-plastic composite pipe according to claim 1, characterized in that: in the first step, the ultrasonic scanning parameters comprise scanning length, scanning width, scanning speed, scanning step pitch, scanning track and sampling frequency.
3. The ultrasonic testing method for the welding quality of the steel-plastic composite pipe according to claim 2, characterized in that: the specific process of performing ultrasonic scanning on the welding position of the steel-plastic composite pipe in the step three is as follows: driving an ultrasonic probe to scan the welding position of the steel-plastic composite pipe according to the scanning speed and the scanning track by a motor until the surface of the welding position of the whole steel-plastic composite pipe is scanned according to the scanning length and the scanning width; when the ultrasonic probe reaches a scanning point, the ultrasonic pulse generator sends out an excitation pulse to act on the ultrasonic probe to emit an ultrasonic signal, the ultrasonic signal is transmitted along the radial direction of the welding position of the steel-plastic composite pipe and is reflected in the steel-plastic composite material, and the ultrasonic pulse receiving generator receives the reflected ultrasonic pulse signal.
4. The ultrasonic testing method for the welding quality of the steel-plastic composite pipe according to claim 1, characterized in that: the specific process for generating the gray-scale image of the welding seam of the steel-plastic composite pipe in the step four is as follows: and drawing a gray scale image of the ultrasonic imaging of the interface of the layered metal composite material according to the amplitude of the ultrasonic signal at each scanning point through a gray scale image imaging module.
5. The ultrasonic testing method for the welding quality of the steel-plastic composite pipe according to claim 2, characterized in that: the scanning length is 0.5 cm-100 cm, the scanning width is 0.1 cm-50 cm, the scanning speed is 0.1 mm/min-3 mm/min, and the scanning step distance is 0.01 mm-0.5 mm.
Priority Applications (1)
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| CN201911358052.5A CN113030271A (en) | 2019-12-25 | 2019-12-25 | Ultrasonic detection method for welding quality of steel-plastic composite pipe |
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| CN201911358052.5A CN113030271A (en) | 2019-12-25 | 2019-12-25 | Ultrasonic detection method for welding quality of steel-plastic composite pipe |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114952068A (en) * | 2022-08-02 | 2022-08-30 | 江苏时代新能源科技有限公司 | Welding quality detection method and detection device, welding device and control method thereof |
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2019
- 2019-12-25 CN CN201911358052.5A patent/CN113030271A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114952068A (en) * | 2022-08-02 | 2022-08-30 | 江苏时代新能源科技有限公司 | Welding quality detection method and detection device, welding device and control method thereof |
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Application publication date: 20210625 |
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