GB2328509A - Magnetic particle inspection apparatus - Google Patents
Magnetic particle inspection apparatus Download PDFInfo
- Publication number
- GB2328509A GB2328509A GB9717534A GB9717534A GB2328509A GB 2328509 A GB2328509 A GB 2328509A GB 9717534 A GB9717534 A GB 9717534A GB 9717534 A GB9717534 A GB 9717534A GB 2328509 A GB2328509 A GB 2328509A
- Authority
- GB
- United Kingdom
- Prior art keywords
- magnetic particle
- particle inspection
- hand held
- inspection process
- gun
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
- 238000007689 inspection Methods 0.000 title claims abstract description 11
- 239000006249 magnetic particle Substances 0.000 title claims abstract description 11
- 238000012360 testing method Methods 0.000 claims abstract description 18
- 238000000034 method Methods 0.000 claims abstract description 9
- 239000000976 ink Substances 0.000 claims description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 1
- 229910000576 Laminated steel Inorganic materials 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000000994 depressogenic effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000009659 non-destructive testing Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 210000000707 wrist Anatomy 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/72—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables
- G01N27/82—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables for investigating the presence of flaws
- G01N27/83—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables for investigating the presence of flaws by investigating stray magnetic fields
- G01N27/84—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables for investigating the presence of flaws by investigating stray magnetic fields by applying magnetic powder or magnetic ink
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Or Analyzing Materials By The Use Of Magnetic Means (AREA)
- Manipulator (AREA)
Abstract
A hand held electromagnetic "gun" for use in the magnetic particle inspection process allows unobscured overhead viewing of the test area and, in conjunction with a wheel B in the base of its handle and pole pieces A having surfaces arranged at an angle to the body of the apparatus, allows easy repositioning for consecutive tests on flat surfaces. The arrangement of the apparatus allows overhead application of magnetic ink to the test area. The pole pieces may be carried on articulated legs to maximise contact with the test area.
Description
HAND HELD ELECTROMAGNETIC GUN FOR USE IN THE MAGNETIC PARTICLE INSPECTION PROCESS.
This Invention relates to a Hand held Electromagnetic Gun, used in Non-Destructive Testing, for the location of surface breaking cracks in the Field of Magnetic Particle Inspection.
Magnetic Particle Inspection is well documented and established procedure for Surface Crack Detection.
Hand Held Electromagnets in conjunction with Magnetic Inks have been used to locate cracks in steels tar many years.
They basically consist of an Encapsulated Coil with Two Articulated Legs which are adjustable to accommodate the surface under test. Designs are yoke" type in nature with the Operator holding the Encapsulated Coil and viewing the test area from the side of the Unit. The Coils are bulky and the test area often partially obscured.
According to the present invention there is provided a Hand Held Electromagnetic Gun for use in the Magnetic Particle
Inspection process, consisting of a Handle with a Wheel in its base and an Operating Trigger Switch, a Pair of Coils which are mounted and encapsulated above, and a Pair of Articulate Laminated Steel Legs with Angled Pole Pieces.
A specific embodiment of the invention will now be described by way of an example with reference to the accompanying drawing in which:
FIGURE 1 - shows the side view of the Electromagnet.
FIGURE2 - shows the plan view of the Electromagnet.
FIGURE3 - shows the front view of the Electromagnet.
FIGURE4 - shows how the Articulated Legs can be adjusted to encompass a new configuration for testing a 90 edge.
FIGURE 5 - shows how the Articulated Legs can be adjusted to encompass further test positions.
FIGURE6 - shows the Electromagnet during flat work testing using Angled Pole Faces.
FIGURE7 - shows the Electromagnet in its vertical test position using Horizontal Pole Faces.
Referring to FIGURE 4 & 5 the Articulated Legs are adjusted to maximise the contact area between the Angled Pole
Faces (A) and the test area, thus enabling the transfer of a Magnetic Field generated by intemal Magnetising Coils C and carried by the laminated Iron Core E, into the area under test.
When good contact is made either with the test surfaces, as in FIGURE 6 or altematively FIGURE 7, and a power supply connect to the main supply Cable D, the Trigger Switch (FIG 1 -F) is depressed and during Magnetisation, Magnetic Ink is sprayed between the two Angled Poles A, of the Electromagnet onto the surface under test, which is then visually inspected. A crack will be indicated by a Black Line (it Black Magnetic Ink is used) or a Bright GreenNellow Line (if Fluorescent Magnetic Ink is used).
When the Electromagnet is positioned as in FIGURE 6 it need never be lifted from a Horizontal test surface because it is moved backwards or forward with its Poles acting as skids and the wheel in the handle acting as a runner.
The Unit is an 'on site' Hand Tool and is provided with a Support Wrist Strap and Shoulder Strap to minimise fatigue
Claims (5)
1. A Hand Held Sectromagnetic Gun for use in the Magnetic Particle Inspection Process, where-in the test area is
unobscured can be viewed overhead utilising Angled Poles.
2. A Hand Held Electromagnetic Gun for use in the Magnetic Particle Inspection Process, as claimed in Claim 1
where-in Magnetic Inks can be applied directly overhead utilising Angled Poles.
3. A Hand Held Electromagnetic Gun for use in the Magnetic Particle Inspection Process, as claimed in Claim 1 and
2 where-in a wheel in the base of its Handle enables effortless movement on flat surfaces.
4. A Hand Held Electromagnetic Gun for use in the Magnetic Particle Inspection Process, as claimed in Claim 1,2
and 3, the Gun being never needed to be lifted when testing flat areas with it instead being slid along.
5. A Hand Held Electromagnetic Gun for use in the Magnetic Particle Inspection Process, substantially as
described herein with reference to FIGURES 14 of the accompanying drawings.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB9717534A GB2328509A (en) | 1997-08-20 | 1997-08-20 | Magnetic particle inspection apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB9717534A GB2328509A (en) | 1997-08-20 | 1997-08-20 | Magnetic particle inspection apparatus |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| GB9717534D0 GB9717534D0 (en) | 1997-10-22 |
| GB2328509A true GB2328509A (en) | 1999-02-24 |
Family
ID=10817696
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB9717534A Withdrawn GB2328509A (en) | 1997-08-20 | 1997-08-20 | Magnetic particle inspection apparatus |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB2328509A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2495357A (en) * | 2011-10-06 | 2013-04-10 | Johnson & Allen Ltd | Portable MPI testing apparatus and method |
| GB2500281A (en) * | 2012-03-15 | 2013-09-18 | Johnson & Allen Ltd | Magnetic particle inspection device |
| WO2019014517A1 (en) * | 2017-07-14 | 2019-01-17 | Illinois Tool Works Inc. | Testing apparatus and handles for testing apparatus |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB692048A (en) * | 1950-10-20 | 1953-05-27 | Raphael Isaac Minchom | Improvements in or relating to magnetic apparatus for crack detection |
| GB735765A (en) * | 1952-10-21 | 1955-08-31 | Raphael Isaac Minchom | Improvements in or relating to magnetic apparatus |
| GB777315A (en) * | 1955-02-14 | 1957-06-19 | Magnaflux Corp | Improvements in and relating to permanent magnet yokes |
| GB865910A (en) * | 1957-01-08 | 1961-04-19 | Ass Elect Ind | Improvements relating to magnetic crack-detecting devices |
| US3763423A (en) * | 1971-04-06 | 1973-10-02 | F Forster | Magnetic particle flaw detector including shield means to protect previously tested surfaces |
| US3855530A (en) * | 1972-09-19 | 1974-12-17 | Nippon Kokan Kk | Magnetic metal defect-detecting apparatus |
| US4694247A (en) * | 1984-06-08 | 1987-09-15 | Mecapec S.A. | Method and apparatus including a cushion of pulverulent magnetic material for stray field magnetic testing of ferromagnetic parts |
| GB2214641A (en) * | 1988-01-26 | 1989-09-06 | British Gas Plc | Apparatus for use in crack detection |
-
1997
- 1997-08-20 GB GB9717534A patent/GB2328509A/en not_active Withdrawn
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB692048A (en) * | 1950-10-20 | 1953-05-27 | Raphael Isaac Minchom | Improvements in or relating to magnetic apparatus for crack detection |
| GB735765A (en) * | 1952-10-21 | 1955-08-31 | Raphael Isaac Minchom | Improvements in or relating to magnetic apparatus |
| GB777315A (en) * | 1955-02-14 | 1957-06-19 | Magnaflux Corp | Improvements in and relating to permanent magnet yokes |
| GB865910A (en) * | 1957-01-08 | 1961-04-19 | Ass Elect Ind | Improvements relating to magnetic crack-detecting devices |
| US3763423A (en) * | 1971-04-06 | 1973-10-02 | F Forster | Magnetic particle flaw detector including shield means to protect previously tested surfaces |
| US3855530A (en) * | 1972-09-19 | 1974-12-17 | Nippon Kokan Kk | Magnetic metal defect-detecting apparatus |
| US4694247A (en) * | 1984-06-08 | 1987-09-15 | Mecapec S.A. | Method and apparatus including a cushion of pulverulent magnetic material for stray field magnetic testing of ferromagnetic parts |
| GB2214641A (en) * | 1988-01-26 | 1989-09-06 | British Gas Plc | Apparatus for use in crack detection |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2495357A (en) * | 2011-10-06 | 2013-04-10 | Johnson & Allen Ltd | Portable MPI testing apparatus and method |
| GB2500281A (en) * | 2012-03-15 | 2013-09-18 | Johnson & Allen Ltd | Magnetic particle inspection device |
| WO2019014517A1 (en) * | 2017-07-14 | 2019-01-17 | Illinois Tool Works Inc. | Testing apparatus and handles for testing apparatus |
| CN111051822A (en) * | 2017-07-14 | 2020-04-21 | 伊利诺斯工具制品有限公司 | Test Equipment and Test Equipment Handles |
| US10908127B2 (en) | 2017-07-14 | 2021-02-02 | Illinois Tool Works Inc. | Testing apparatus and handles for testing apparatus |
Also Published As
| Publication number | Publication date |
|---|---|
| GB9717534D0 (en) | 1997-10-22 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| WAP | Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1) |