CA1104244A - Apparatus for testing elongate articles - Google Patents
Apparatus for testing elongate articlesInfo
- Publication number
- CA1104244A CA1104244A CA280,217A CA280217A CA1104244A CA 1104244 A CA1104244 A CA 1104244A CA 280217 A CA280217 A CA 280217A CA 1104244 A CA1104244 A CA 1104244A
- Authority
- CA
- Canada
- Prior art keywords
- article
- probe
- movement
- axis
- upper portion
- 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.)
- Expired
Links
Classifications
-
- 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
Landscapes
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material 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 Ultrasonic Waves (AREA)
- Investigating Or Analyzing Materials By The Use Of Magnetic Means (AREA)
Abstract
ABSTRACT OF THE DISCLOSURE
Apparatus for the ultrasonic testing of elongate articles comprises a probe assembly mounted for engagement with an upper portion of an elongate article to be tested as it is moved along its axis therebelow, the probe assembly is capable of movement transverse to the axis of movement of the article; and comprises a probe carrier arrangement having a lower portion conforming to and adapted to slide upon the upper portion of the article during testing, at least one ultrasonic probe mounted on said carrier.
arrangement, and a guide shoe arrangement extending from the leading end of the carrier arrangement, said guide shoe arrangement being angled upwardly and outwardly from the plate and having a lower portion configuration transverse to said axis of movement corresponding generally to that of the lower portion of the probe carrier arrangement.
Apparatus for the ultrasonic testing of elongate articles comprises a probe assembly mounted for engagement with an upper portion of an elongate article to be tested as it is moved along its axis therebelow, the probe assembly is capable of movement transverse to the axis of movement of the article; and comprises a probe carrier arrangement having a lower portion conforming to and adapted to slide upon the upper portion of the article during testing, at least one ultrasonic probe mounted on said carrier.
arrangement, and a guide shoe arrangement extending from the leading end of the carrier arrangement, said guide shoe arrangement being angled upwardly and outwardly from the plate and having a lower portion configuration transverse to said axis of movement corresponding generally to that of the lower portion of the probe carrier arrangement.
Description
11C~424~
This invclltion rclaLcs to a~paratus for tcsting elongate articlcs and morc particular:Ly, al-though not cxclusively, to apparatus for -the ultrasonic testing of elongate articles having an angled cross-section such as square or rectangular section elongate articles for example steel billets or square or rectangular section steel tubes.
According to the invention, as herein claimed, there is provided an apparatus for the ultrasonic testing of elongate articles moving along their axes, comprising an ultrasonic probe assembly mounted for engagement with an upper por-tion of an elongate article to be tested as it is moved along its axis therebelow, said probe assembly being capable of movement trans-verse to the axis of movement of the ar-ticle when engaged with the article; and the probe assembly comprising a probe carrier having a lower portion conforming to and adapted to slide upon the upper portion of the article during testing, at least one ultrasonic probe mounted on said carrier and a guide shoe extending from the leading end of the said lower portion, said guide shoe being angled upwardly and outwardly from the said lower portion and having a lower portion configuration trans-verse to said axis of movement corresponding generally to that of the said lower portion ofthe probe carrier, the probe assembly when not engaged with an article being normally freely suspended by gravity in such a manner that said guide shoe engages the advancing upper portion of the article to be tested, whereby, upon further advancement of the article, said guide shoe and the probe assembly is liEted and aligned by and with the upper portion of the article to be -tested.
The probe carrier arrangement may take the form of a plate structure. Thus it may comprise a plate conforming to the upper portion of the article to be tested or a plurality of interconnected plates performing this function.
Where the apparatus is for testing elongate articles having an angled cross-section, the pla-te structure may have a lower surface correspondingly anyled along its length parallel to said axis of movement so that the plate structure is positively located in relation to the angle of the article and i~ thereby prevented from move_nt around the article to be.
. .
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- ~ested. Thus in the case of testing rectangular or square section artlcles, the lower surface of the plate may comprise two flat portions connected or linked at an included right angle.
The probe assembly may be freely suspended by means of cables wires or chains such as to be capable of generally vertical movement. In this case further cables wires or chains may be provided to restrict movement of the assembly parallel to said axis of movement or to restrict swinging movements when hanging free.
In an alternative arrangement, the probe assembly may be carried by a counterweighted arm permitting at least generally vertical movement of the assembly.
By means of the invention, and in operation, the assembly can be arranged such that before testing, the lower surface of the plate is below the line of travel of the upper portion of articles to be tested, incoming articles engaging firstly the guide shoe thereby forcing the assembly upwards until the plate engages and slides upon the article whereupon testing can commence.
In order that the invention may be more readily under- -stood, three embodiments thereof will now be described by way of example with reference to the accompanying drawings ln which:-Figure 1 is a diagrammatic perspective vLew of one embodiment of the invention at a first stage in its operation;
Figure 2 i9 a diagrammatic perspective view of the embodiment of Figure 1 at`a second stage of its operation;
Figure 3 is a diagrammatic perspective view of a second embodiment of the invention; and Figure 4 is a diagrammatic perspective view of a third embodiment of the invention.
~ 2 ~
Figures 1 and 2 show an assembly for subjecting steel billets 1 to ultrasonic testing. The billets are moved along a path such that one edge 11 thereof is directed upwardly.
A probe assembly 2 is located in the path of travel of the billetl and is suspended from a fLxed support (not sho~n) by four chains 12, and restricted against movement along said path of travel by two anchor chains 14. Further stabilizing chains 13 are provided to eliminate "pendulum" oscillation, for example after the end of a bent billet leaves the assembly.
The probe assembly comprises two flat rectangular plates 15 and 18 linked or connected together at right angles by means of a bridging member, but nonetheless separated from each other.
This separation allows the unit to establish rapidly a correct riding position when engaging a badly sheared billet end, since the shear "rag" can quite easily pass through the gap between the plates.
Each plate 15 and 18 carries a plurality of ultrasonic probe units 22 for testing the billet.
Attached to the underside of each plate 15 and 18 is a shoe 16 and 19 by means for example of screws (not shown). The shoes act as rubbing plates for the assembly and also as lead-on guides by means of leading ends 17 and 20 inclined at -approximately 30 to the general plane of the respective shoe.
In operation the leading end of an incoming billet 1 firstly encounters the inclined ends 17 and 20 of the shoes 16 and 19, which ride up the billet leading end until the assembly rides upon the billet 1 with plates 15 and 18 on adjacent faces of the billet and positive location thereby assured. This is the condition illustrated in Figure 2.
As will be seen, the support chains 12 are now slack, and the assembly is restrained from movement with the billet by the anchor chains 14.
As soon as plates 15 and 18 are riding on the billet, testing by means of the ultrasonic probes can commence in the normal manner, a coupling fluid (such as water) being supplied to the probe units in any convenient known way.
Upon a tested billet leaving the apparatus, the assembly will again drop down to the supported position shown in Figure 1.
The arrangement of Figure 3 is similar to that of Figures 1 and 2. Thus a probe assembly 2 is located in the path of travel of the billet 1 and is suspended from a fixed support (not shown) by four wires 3 and restricted against vement along said path of travel by two anchor wires 4.
The probe assembly comprises a plate 5 in the form of two flat portions joined at an internally right-angled ridge 6.
Each plate portion carries a plurality of ultrasonic probe units 7 for testing the billet.
Secured to the leading edge of the plate 5 is a guide shoe 8. The guide shoe is ridged in a similar manner to the plate and is inclined upwardly and outwardly at an angle of approximately 30 to the plate.
- The embodiment of the invention shown in Figure 4 is in operational respect the same as that of Figures 1 and 2 and 3.
In this case however the probe assembly 2 is supported from a fixed axle 9 by means of a double counterweight arm arrangement 1~ which permits movement of the assembly 2 transverse to the path of travel of the billet 1 We believe that the invention as described provides a simple and effective testing arrangement in which the usual .
ma;lufacturing degree of twisting bowing and misalignment of billets can easily be accommodated by the positive ridge location of the plate as the billets pass through the apparatus and in which the guide shoe enables the assembly to ride successfully over any rags and slivers at the leading end of ~he billetO It is to be noted that the apparatus is capable of accommodating a range of billet sizes without need for adjustment~ In addition testing can commence immediately the plate 5 is riding on the billet end so that only an insignificant portion of the billet is not subjected to testing.
Although wear of the guide shoe and/or plate will occur, these relatively inexpensive items can be readily replaced at reasonable intervals.
.. ~i :'
This invclltion rclaLcs to a~paratus for tcsting elongate articlcs and morc particular:Ly, al-though not cxclusively, to apparatus for -the ultrasonic testing of elongate articles having an angled cross-section such as square or rectangular section elongate articles for example steel billets or square or rectangular section steel tubes.
According to the invention, as herein claimed, there is provided an apparatus for the ultrasonic testing of elongate articles moving along their axes, comprising an ultrasonic probe assembly mounted for engagement with an upper por-tion of an elongate article to be tested as it is moved along its axis therebelow, said probe assembly being capable of movement trans-verse to the axis of movement of the ar-ticle when engaged with the article; and the probe assembly comprising a probe carrier having a lower portion conforming to and adapted to slide upon the upper portion of the article during testing, at least one ultrasonic probe mounted on said carrier and a guide shoe extending from the leading end of the said lower portion, said guide shoe being angled upwardly and outwardly from the said lower portion and having a lower portion configuration trans-verse to said axis of movement corresponding generally to that of the said lower portion ofthe probe carrier, the probe assembly when not engaged with an article being normally freely suspended by gravity in such a manner that said guide shoe engages the advancing upper portion of the article to be tested, whereby, upon further advancement of the article, said guide shoe and the probe assembly is liEted and aligned by and with the upper portion of the article to be -tested.
The probe carrier arrangement may take the form of a plate structure. Thus it may comprise a plate conforming to the upper portion of the article to be tested or a plurality of interconnected plates performing this function.
Where the apparatus is for testing elongate articles having an angled cross-section, the pla-te structure may have a lower surface correspondingly anyled along its length parallel to said axis of movement so that the plate structure is positively located in relation to the angle of the article and i~ thereby prevented from move_nt around the article to be.
. .
, ~ '` , .
r :~ ~
. . ' ' ' .
1 .
, ~' ~
'' ' , ' ' ' ~'', " - - ~ ' ' .
~4~49~
- ~ested. Thus in the case of testing rectangular or square section artlcles, the lower surface of the plate may comprise two flat portions connected or linked at an included right angle.
The probe assembly may be freely suspended by means of cables wires or chains such as to be capable of generally vertical movement. In this case further cables wires or chains may be provided to restrict movement of the assembly parallel to said axis of movement or to restrict swinging movements when hanging free.
In an alternative arrangement, the probe assembly may be carried by a counterweighted arm permitting at least generally vertical movement of the assembly.
By means of the invention, and in operation, the assembly can be arranged such that before testing, the lower surface of the plate is below the line of travel of the upper portion of articles to be tested, incoming articles engaging firstly the guide shoe thereby forcing the assembly upwards until the plate engages and slides upon the article whereupon testing can commence.
In order that the invention may be more readily under- -stood, three embodiments thereof will now be described by way of example with reference to the accompanying drawings ln which:-Figure 1 is a diagrammatic perspective vLew of one embodiment of the invention at a first stage in its operation;
Figure 2 i9 a diagrammatic perspective view of the embodiment of Figure 1 at`a second stage of its operation;
Figure 3 is a diagrammatic perspective view of a second embodiment of the invention; and Figure 4 is a diagrammatic perspective view of a third embodiment of the invention.
~ 2 ~
Figures 1 and 2 show an assembly for subjecting steel billets 1 to ultrasonic testing. The billets are moved along a path such that one edge 11 thereof is directed upwardly.
A probe assembly 2 is located in the path of travel of the billetl and is suspended from a fLxed support (not sho~n) by four chains 12, and restricted against movement along said path of travel by two anchor chains 14. Further stabilizing chains 13 are provided to eliminate "pendulum" oscillation, for example after the end of a bent billet leaves the assembly.
The probe assembly comprises two flat rectangular plates 15 and 18 linked or connected together at right angles by means of a bridging member, but nonetheless separated from each other.
This separation allows the unit to establish rapidly a correct riding position when engaging a badly sheared billet end, since the shear "rag" can quite easily pass through the gap between the plates.
Each plate 15 and 18 carries a plurality of ultrasonic probe units 22 for testing the billet.
Attached to the underside of each plate 15 and 18 is a shoe 16 and 19 by means for example of screws (not shown). The shoes act as rubbing plates for the assembly and also as lead-on guides by means of leading ends 17 and 20 inclined at -approximately 30 to the general plane of the respective shoe.
In operation the leading end of an incoming billet 1 firstly encounters the inclined ends 17 and 20 of the shoes 16 and 19, which ride up the billet leading end until the assembly rides upon the billet 1 with plates 15 and 18 on adjacent faces of the billet and positive location thereby assured. This is the condition illustrated in Figure 2.
As will be seen, the support chains 12 are now slack, and the assembly is restrained from movement with the billet by the anchor chains 14.
As soon as plates 15 and 18 are riding on the billet, testing by means of the ultrasonic probes can commence in the normal manner, a coupling fluid (such as water) being supplied to the probe units in any convenient known way.
Upon a tested billet leaving the apparatus, the assembly will again drop down to the supported position shown in Figure 1.
The arrangement of Figure 3 is similar to that of Figures 1 and 2. Thus a probe assembly 2 is located in the path of travel of the billet 1 and is suspended from a fixed support (not shown) by four wires 3 and restricted against vement along said path of travel by two anchor wires 4.
The probe assembly comprises a plate 5 in the form of two flat portions joined at an internally right-angled ridge 6.
Each plate portion carries a plurality of ultrasonic probe units 7 for testing the billet.
Secured to the leading edge of the plate 5 is a guide shoe 8. The guide shoe is ridged in a similar manner to the plate and is inclined upwardly and outwardly at an angle of approximately 30 to the plate.
- The embodiment of the invention shown in Figure 4 is in operational respect the same as that of Figures 1 and 2 and 3.
In this case however the probe assembly 2 is supported from a fixed axle 9 by means of a double counterweight arm arrangement 1~ which permits movement of the assembly 2 transverse to the path of travel of the billet 1 We believe that the invention as described provides a simple and effective testing arrangement in which the usual .
ma;lufacturing degree of twisting bowing and misalignment of billets can easily be accommodated by the positive ridge location of the plate as the billets pass through the apparatus and in which the guide shoe enables the assembly to ride successfully over any rags and slivers at the leading end of ~he billetO It is to be noted that the apparatus is capable of accommodating a range of billet sizes without need for adjustment~ In addition testing can commence immediately the plate 5 is riding on the billet end so that only an insignificant portion of the billet is not subjected to testing.
Although wear of the guide shoe and/or plate will occur, these relatively inexpensive items can be readily replaced at reasonable intervals.
.. ~i :'
Claims (9)
1. Apparatus for the ultrasonic testing of elongate articles moving along their axes, comprising an ultrasonic probe assembly mounted for engagement with an upper portion of an elongate article to be tested as it is moved along its axis therebelow, said probe assembly being capable of movement transverse to the axis of movement of the article when engaged with the article; and the probe assembly comprising a probe car-rier having a lower portion conforming to and adapted to slide upon the upper portion of the article during testing, at least one ultrasonic probe mounted on said carrier and a guide shoe extending from the leading end of the said lower portion, said guide shoe being angled upwardly and outwardly from the said lower portion and having a lower portion configuration trans-verse to said axis of movement corresponding generally to that of the said lower portion of the probe carrier, the probe assem-bly when not engaged with an article being normally freely sus-pended by gravity in such a manner that said guide shoe engages the advancing upper portion of the article to be tested, whereby, upon further advancement of the article, said guide shoe and the probe assembly is lifted and aligned by and with the upper portion of the article to be tested.
2. Apparatus as claimed in claim 1 wherein the probe carrier is in the form of a plate structure.
3. Apparatus as claimed in claim 2 wherein the plate structure comprises a single plate the lower surface of which conforms to the upper portion of the article during testing.
4. Apparatus as claimed in claim 2 wherein the plate structure comprises a plurality of interconnected plates arranged such that the lower surface thereof conforms to the upper portion of the article during testing.
5. Apparatus as claimed in claim 2 for testing elongate articles having an angled cross-section wherein the plate structure has a lower surface correspondingly angled along its length parallel to said axis of movement so that the plate structure during testing is positively located by means of the angle of the article.
6. Apparatus as claimed in claim 5 for testing rectangular or square section articles wherein the lower surface of the plate structure comprises two flat portions connected or linked at an included right angle.
7. Apparatus as claimed in claim 1 wherein the probe assembly is freely suspended by means of cables wires or chains such as to be capable of generally vertical movement.
8. Apparatus as claimed in claim 7 including additional cables wires or chains provided to restrict movement of the assembly parallel to the axis of movement of the article being tested.
9. Apparatus as claimed in claim l wherein the probe assembly is carried by a counterweighted arm permitting at least generally vertical movement of the assembly.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB24374/76 | 1976-06-11 | ||
| GB2437476A GB1579723A (en) | 1976-06-11 | 1976-06-11 | Apparatus for testing elongate articles |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1104244A true CA1104244A (en) | 1981-06-30 |
Family
ID=10210733
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA280,217A Expired CA1104244A (en) | 1976-06-11 | 1977-06-09 | Apparatus for testing elongate articles |
Country Status (6)
| Country | Link |
|---|---|
| JP (1) | JPS6010576B2 (en) |
| CA (1) | CA1104244A (en) |
| DE (1) | DE2726232A1 (en) |
| FR (1) | FR2354559A1 (en) |
| GB (1) | GB1579723A (en) |
| IT (1) | IT1083505B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5912653A (en) * | 1982-07-13 | 1984-01-23 | Nec Corp | Synchronizing circuit of error correcting decoder |
| KR102545413B1 (en) * | 2021-04-21 | 2023-06-20 | 한양대학교 에리카산학협력단 | Mortar composition and concrete composition using organic-inorganic hybrid water-repellent |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR1395373A (en) * | 1963-05-27 | 1965-04-09 | Voest Ag | Ultrasonic testing device for flat or similar objects and its various applications |
| US3483739A (en) * | 1965-06-30 | 1969-12-16 | Magnaflux Corp | Ultrasonic billet inspection apparatus |
| LU52958A1 (en) * | 1967-02-08 | 1967-04-10 | ||
| DE1648560B2 (en) * | 1967-11-07 | 1975-09-18 | Krautkraemer Gmbh | Method and device for non-destructive material testing of elongated test objects in a continuous process, in particular with ultrasound |
| GB1224821A (en) * | 1968-03-11 | 1971-03-10 | J U H Krautkramer Ges Fur Elek | Apparatus for non-destructive materials testing of continuously advanced work pieces |
| DE1698138A1 (en) * | 1968-03-11 | 1971-08-12 | J U H Krautkraemer Ges Fuer El | Device for the non-destructive testing of continuously moving workpieces |
| GB1376538A (en) * | 1972-03-09 | 1974-12-04 | British Steel Corp | Rotary ultrasonic testing apparatus |
-
1976
- 1976-06-11 GB GB2437476A patent/GB1579723A/en not_active Expired
-
1977
- 1977-06-09 CA CA280,217A patent/CA1104244A/en not_active Expired
- 1977-06-09 FR FR7717695A patent/FR2354559A1/en active Granted
- 1977-06-10 IT IT6835677A patent/IT1083505B/en active
- 1977-06-10 DE DE19772726232 patent/DE2726232A1/en not_active Ceased
- 1977-06-10 JP JP52068723A patent/JPS6010576B2/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FR2354559A1 (en) | 1978-01-06 |
| IT1083505B (en) | 1985-05-21 |
| JPS5319882A (en) | 1978-02-23 |
| FR2354559B1 (en) | 1983-07-18 |
| JPS6010576B2 (en) | 1985-03-18 |
| DE2726232A1 (en) | 1977-12-22 |
| GB1579723A (en) | 1980-11-26 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry |