CN106643465B - A kind of weld penetration detection method - Google Patents
A kind of weld penetration detection method Download PDFInfo
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- CN106643465B CN106643465B CN201611235077.2A CN201611235077A CN106643465B CN 106643465 B CN106643465 B CN 106643465B CN 201611235077 A CN201611235077 A CN 201611235077A CN 106643465 B CN106643465 B CN 106643465B
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- weld
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- magnetic induction
- signal
- induction sensor
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B7/00—Measuring arrangements characterised by the use of electric or magnetic techniques
- G01B7/26—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring depth
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- General Physics & Mathematics (AREA)
- Investigating Or Analyzing Materials By The Use Of Magnetic Means (AREA)
Abstract
The invention discloses a kind of weld penetration detection method, specifically comprise the following steps: that first double magnetic induction sensors of weld seam weak magnetic detector are popped one's head in arrange perpendicular to face of weld；After weld seam extending direction scanning, weak magnetic inductive signal inside the weld seam of acquisition is converted into electric signal；Electric signal is converted into digital signal by the D/A converting circuit and amplifying circuit of signal picker；Processor is by obtaining two collected magnetic anomaly signal values of magnetic induction sensors probe to Digital Signal Analysis；According to Biot-Savart law, weld penetration is calculated by magnetic anomaly signal value ratio and magnetic induction sensor probe thickness；Advantage is to use pops one's head in by double magnetic induction sensors that weld seam extending direction arranges, according to Biot-Savart law, weld penetration is calculated by magnetic anomaly signal value ratio and magnetic induction sensor probe thickness, computation complexity is greatly lowered, operation time is calculated to effectively reduce, so that detection speed is faster, it is more efficient.
Description
Technical field
The present invention relates to a kind of weld penetration detection methods.
Background technique
In recent years, as the high speed of the state-of-the-art technologies such as metallurgy, machinery, petrochemical industry, electric power and atomic energy, space flight is sent out
Exhibition, the requirement to the performance for stability of Product jointing is also higher and higher, and welding penetration is the important symbol of electroplating equipment wielding machine performance
With external manifestation, so becoming the important means for examining welding effect to effective detection of welding penetration.Wherein, weld penetration is
Distance of the face of weld to the root of weld.
It is existing such as application No. is the weld penetration detection method of CN201510321538.7, visited by magnetic induction sensor
Head obtains magnetic anomaly curve, the reconstruct to magnetic anomaly Curve Maximization point, to the magnetic anomaly after reconstruct along weld seam extending direction scanning
Then the picture tangent line of Curve Maximization point obtains weld penetration with the change curve tangent line of scanning distance, although reliably by calculating
Property it is higher, but due to calculate it is more complicated, be difficult quickly to detect.
Summary of the invention
Technical problem to be solved by the invention is to provide a kind of weld penetration detection methods that detection is easy and high-efficient.
The technical scheme of the invention to solve the technical problem is: a kind of weld penetration detection method, specific to wrap
It includes following steps: first double magnetic induction sensors of weld seam weak magnetic detector being popped one's head in arrange perpendicular to face of weld；Along weld seam
After extending direction scanning, weak magnetic inductive signal inside the weld seam of acquisition is converted into electric signal；Electric signal passes through signal picker
D/A converting circuit and amplifying circuit be converted into digital signal；Processor is by obtaining two magnetic induction to Digital Signal Analysis
The collected magnetic anomaly signal value of sensor probe；According to Biot-Savart law, pass through magnetic anomaly signal value ratio and magnetic strength
Inductive sensing device probe thickness calculates weld penetration.
Preferably, one of probe is attached to face of weld.
Preferably, the magnetic induction sensor uses precision for the fluxgate sensor of 0.1nT.
Compared with the prior art, the advantages of the present invention are as follows use the double magnetic strength inductive sensings arranged perpendicular to face of weld
Along weld seam extending direction scanning, weak magnetic inductive signal is converted, two magnetic induction sensors are obtained after analysis pops one's head in phases device probe
The magnetic anomaly signal value answered is visited then according to Biot-Savart law by magnetic anomaly signal value ratio and magnetic induction sensor
Head thickness gauge calculates weld penetration, and computation complexity is greatly lowered, and calculates operation time to effectively reduce, so that detection speed
Degree is faster, more efficient.
Specific embodiment
Present invention is further described in detail with reference to embodiments.
This preferred embodiment is a kind of weld penetration detection method, specifically comprises the following steps: first to detect weld seam weak magnetic
Double magnetic induction sensors of instrument are popped one's head in arrange perpendicular to face of weld；After weld seam extending direction scanning, by the weld seam of acquisition
Internal weak magnetic inductive signal is converted into electric signal；Electric signal is converted by the D/A converting circuit and amplifying circuit of signal picker
At digital signal；Processor is by obtaining two collected magnetic anomaly regular signals of magnetic induction sensors probe to Digital Signal Analysis
Value, wherein magnetic anomaly signal value is the data value of the extreme point of magnetic signal change curve, and two magnetic induction sensor probes are to hang down
Directly arrange in face of weld so that the extreme point of two magnetic signal change curves appears in identical scanning position；According to Biot-
Sa cuts down your law, calculates weld penetration by magnetic anomaly signal value ratio and magnetic induction sensor probe thickness, speciallyWherein, h1The distance of the root of weld, h are arrived for magnetic induction sensor probe 12For magnetic induction sensor probe 2
To the distance of the root of weld, Bz1For the magnetic anomaly signal value that 1 acquisition of magnetic induction sensor probe obtains, Bz2For magnetic strength inductive sensing
The magnetic anomaly signal value that 2 acquisition of device probe obtains, Δ h are magnetic induction sensor 2 thickness of probe, and weld penetration is h2Subtract magnetic
Inductive pick-up probe 2 arrives the distance of face of weld；When magnetic induction sensor probe 2 is attached to face of weld, h2As weld seam
Fusion penetration.
In the present embodiment, weld seam weak magnetic detector is mainly by double magnetic induction sensors to arrange perpendicular to face of weld
Probe, signal picker, display and processor connection form.It wherein, is the detection accuracy for improving weld penetration, magnetic induction
Sensor uses precision for the fluxgate sensor of 0.1nT；The model CT-WBT-11600 of signal picker, the model signal
The digits converting extent of collector is fast, and the amplification factor of amplifying circuit is larger, and magnetic anomaly signal value is more accurate.
Claims (2)
1. a kind of weld penetration detection method, which is characterized in that specifically comprise the following steps: the double of weld seam weak magnetic detector first
Magnetic induction sensor is popped one's head in arrange perpendicular to face of weld；It, will be weak inside the weld seam of acquisition after weld seam extending direction scanning
Magnetic strength induction signal is converted into electric signal；Electric signal is converted into number by the D/A converting circuit and amplifying circuit of signal picker
Signal；Processor is by obtaining two collected magnetic anomaly signal values of magnetic induction sensors probe to Digital Signal Analysis；Root
According to Biot-Savart law, weld penetration is calculated by magnetic anomaly signal value ratio and magnetic induction sensor probe thickness；Tool
Body isWherein, h1The distance of the root of weld, h are arrived for magnetic induction sensor probe 12For magnetic induction sensor spy
First 2 arrive the distance of the root of weld, Bz1For the magnetic anomaly signal value that 1 acquisition of magnetic induction sensor probe obtains, Bz2For magnetic induction biography
The magnetic anomaly signal value that 2 acquisition of sensor probe obtains, Δ h are magnetic induction sensor 2 thickness of probe, and weld penetration is h2It subtracts
Magnetic induction sensor probe 2 arrives the distance of face of weld；When magnetic induction sensor probe 2 is attached to face of weld, h2As weld
Stitch fusion penetration；
The magnetic induction sensor uses precision for the fluxgate sensor of 0.1nT.
2. a kind of weld penetration detection method according to claim 1, it is characterised in that: one of probe is attached to weld seam
Surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611235077.2A CN106643465B (en) | 2016-12-28 | 2016-12-28 | A kind of weld penetration detection method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611235077.2A CN106643465B (en) | 2016-12-28 | 2016-12-28 | A kind of weld penetration detection method |
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| CN106643465A CN106643465A (en) | 2017-05-10 |
| CN106643465B true CN106643465B (en) | 2019-01-29 |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106643465B (en) * | 2016-12-28 | 2019-01-29 | 宁波市鄞州磁泰电子科技有限公司 | A kind of weld penetration detection method |
| CN107552994B (en) * | 2017-09-26 | 2019-06-28 | 宁波市鄞州磁泰电子科技有限公司 | A kind of weld penetration, molten wide and the high detection method of weldering |
| CN112304202B (en) * | 2020-05-20 | 2022-09-23 | 上海达铭科技有限公司 | Laser spot welding nugget geometric parameter measuring device and using method thereof |
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| US3743776A (en) * | 1970-05-05 | 1973-07-03 | J Angely | Device for tracing seams for welding by electron bombardment |
| EP0576322A1 (en) * | 1992-06-26 | 1993-12-29 | AEROSPATIALE Société Nationale Industrielle | Procedure for non-destructive testing of a soldered joint |
| CN2556592Y (en) * | 2002-07-25 | 2003-06-18 | 鞍钢集团新钢铁有限责任公司 | Crack depth detector for cast blank section |
| CN101361660A (en) * | 2008-05-16 | 2009-02-11 | 深圳先进技术研究院 | Multi-magnetic target positioning method and system |
| CN101957164A (en) * | 2009-07-09 | 2011-01-26 | 通用电气公司 | Weld seam analytical equipment and method |
| CN103529123A (en) * | 2013-09-27 | 2014-01-22 | 哈电集团（秦皇岛）重型装备有限公司 | Dual-probe manual ultrasonic detection method |
| CN104070267A (en) * | 2014-05-23 | 2014-10-01 | 湘潭大学 | Method for eddy current sensing welding seam automatic following control of front dual probes |
| CN104930965A (en) * | 2015-06-12 | 2015-09-23 | 宁波市鄞州磁泰电子科技有限公司 | Weld joint penetration depth detection method |
| CN106643465A (en) * | 2016-12-28 | 2017-05-10 | 宁波市鄞州磁泰电子科技有限公司 | Weld joint penetration depth detection method |
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2016
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Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3743776A (en) * | 1970-05-05 | 1973-07-03 | J Angely | Device for tracing seams for welding by electron bombardment |
| EP0576322A1 (en) * | 1992-06-26 | 1993-12-29 | AEROSPATIALE Société Nationale Industrielle | Procedure for non-destructive testing of a soldered joint |
| CN2556592Y (en) * | 2002-07-25 | 2003-06-18 | 鞍钢集团新钢铁有限责任公司 | Crack depth detector for cast blank section |
| CN101361660A (en) * | 2008-05-16 | 2009-02-11 | 深圳先进技术研究院 | Multi-magnetic target positioning method and system |
| CN101957164A (en) * | 2009-07-09 | 2011-01-26 | 通用电气公司 | Weld seam analytical equipment and method |
| CN103529123A (en) * | 2013-09-27 | 2014-01-22 | 哈电集团（秦皇岛）重型装备有限公司 | Dual-probe manual ultrasonic detection method |
| CN104070267A (en) * | 2014-05-23 | 2014-10-01 | 湘潭大学 | Method for eddy current sensing welding seam automatic following control of front dual probes |
| CN104930965A (en) * | 2015-06-12 | 2015-09-23 | 宁波市鄞州磁泰电子科技有限公司 | Weld joint penetration depth detection method |
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