WO2001081037A1 - Aid for welding or cutting - Google Patents

Aid for welding or cutting Download PDF

Info

Publication number
WO2001081037A1
WO2001081037A1 PCT/AU2000/000789 AU0000789W WO0181037A1 WO 2001081037 A1 WO2001081037 A1 WO 2001081037A1 AU 0000789 W AU0000789 W AU 0000789W WO 0181037 A1 WO0181037 A1 WO 0181037A1
Authority
WO
WIPO (PCT)
Prior art keywords
workpiece
welding
cutting
luminescent
marker
Prior art date
Application number
PCT/AU2000/000789
Other languages
French (fr)
Inventor
Dennis James O'connell
Original Assignee
Connell Dennis James O
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority to AU30119/00A priority Critical patent/AU3011900A/en
Priority to AU30119/00 priority
Application filed by Connell Dennis James O filed Critical Connell Dennis James O
Priority claimed from AU2000255132A external-priority patent/AU2000255132A1/en
Publication of WO2001081037A1 publication Critical patent/WO2001081037A1/en
Priority claimed from US10/281,896 external-priority patent/US20030160038A1/en

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23KSOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K31/00Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23KSOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K10/00Welding or cutting by means of a plasma
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23KSOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K26/00Working by laser beam, e.g. welding, cutting or boring
    • B23K26/02Positioning or observing the workpiece, e.g. with respect to the point of impact; Aligning, aiming or focusing the laser beam
    • B23K26/03Observing, e.g. monitoring, the workpiece
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23KSOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K35/00Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23KSOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K35/00Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
    • B23K35/02Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by mechanical features, e.g. shape
    • B23K35/0211Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by mechanical features, e.g. shape for use in cutting
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23KSOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K9/00Arc welding or cutting
    • B23K9/12Automatic feeding or moving of electrodes or work for spot or seam welding or cutting
    • B23K9/127Means for tracking lines during arc welding or cutting
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23KSOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K9/00Arc welding or cutting
    • B23K9/32Accessories
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23KSOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K35/00Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
    • B23K35/22Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by the composition or nature of the material

Abstract

Products for aiding welding or high temperature cuttingoperations comprise a workpiece marker and a welding or cuttingaid system. The marker includes a luminescent material which isexcited by UV radiation generated during arc welding to emitlight in the visible spectrum, e.g. orange light. The aidsystem includes a light filter matched to the visible emissionwavelength of the marker interposed in the light path, e.g.adjacent the dark filter of a welder's mask. The marker is usedto mark a weld or cutting path trace visible to the welderduring the operation. A method of aiding a welding or cuttingoperation using the marker and matched light filter is also provided.

Description

AID FOR WELDING OR CUTTING
Field of the Invention
This invention relates to products and methods for aiding welding or high
temperature cutting operations.
Background of the invention
Prior to welding or high temperature cutting operations, it is known to use chalk as a
marker for creating markings on a workpiece, such as the path which the weld or cut is to
follow. However the mask which the operator interposes to protect the eyesight includes a
dark filter to substantially attenuate the very intense electromagnetic radiation from the
welding or cutting site. This can make it very difficult or impossible for the operator to see
the chalk markings during the welding or cutting operation. As a result, the weld or cut is
frequently inaccurate and sometimes it is necessary for the operation to be performed again
to achieve the required standard of accuracy or neatness. Also, the difficulty of seeing the
chalk markings often means that the operator stops the operation, removes the mask to
inspect the progress of the operation before resuming. These interruptions can significantly
increase the time taken for the welding or cutting operation.
Object of the invention
It is an object of the present invention to provide products and methods which can
enable a person carrying out a welding or high temperature cutting operation to see markings
on a workpiece during the welding or cutting operation.
Summary of the Invention
According to a first aspect of the invention there is provided a workpiece marker for
use in a welding or high temperature cutting operation, the marker including a luminescent
material in a form or medium for application to a workpiece, the luminescent material having the property of enabling creation of markings on the workpiece which are visible during the
welding or cutting operation through eyesight protecting means of the operator to thereby
provide a visible aid for the welding or cutting operation.
According to a second aspect of the invention there is provided a welding or cutting
aid system for aiding a welding or high temperature cutting operation, the system including:
a workpiece marker which includes a luminescent material in a form or medium for
application to a workpiece, the luminescent material having the property of enabling creation
of markings on the workpiece which are visible during the welding or cutting operation
through eyesight protecting means of the operator, and a light filter to be interposed in use
between the workpiece and the operator's eyes, the light filter being translucent to a band of
frequencies which includes the frequency or frequencies of visible light emission of the
luminescent material of the marker, the light filter substantially attenuating radiation at
frequencies spaced from said band of frequencies.
According to a tl ird aspect of the invention there is provided a method of aiding a
welding or high temperature cutting operation being carried out on a workpiece, the method
including the steps of: applying to the workpiece a luminescent material so as to
create markings on the workpiece at locations intended to guide or inform an operator
monitoring or controlling the welding or cutting operation, the luminescent material having
the property of emitting visible radiation, when excited during the welding or cutting
operation, and conducting a welding or high temperature cutting operation on the workpiece
while viewing the workpiece through an eyesight protector apparatus, the eyesight protector
apparatus being translucent to a band of frequencies which includes the frequency or
frequencies of visible light emission of the luminescent material, and controlling the welding or cutting operation in accordance with the visible markings of luminescent material on the
workpiece.
Description of the Preferred Embodiments
In the embodiments of the invention, preferably the luminescent material which
enables creation of markings on the workpieces emits radiation in the visible spectrum upon
excitation during the welding or cutting operation. In particular, it is preferable that the
welding or cutting operation generates the exciting radiation which stimulates the
luminescent material to emit the visible radiation.
The products and methods of the present invention are particularly applicable to arc
weldmg including stick welding, TIG welding and MIG weldmg or plasma cutting
operations. It is possible that the principles of the invention may be applicable to other types
of welding or cutting operations but the radiation generated in other types of welding and
cutting may not be as readily amenable to stimulating or exciting a luminescent material to
emit sufficient light in the visible part of the spectrum. In the preferred or expected principal
field of use in which the welding or cutting operation includes generation of an electric arc,
the radiation being emitted by the arc preferably constitutes the exciting radiation which
impinges on the luminescent material to stimulate it to emit the visible radiation. For
example, the luminescent material may be excited by ultraviolet radiation emitted by the
electric arc to emit the visible radiation.
The luminescent material may be a fluorescent material, or may be a phosphorescent
material.
Preferably the luminescent material emits visible radiation in the middle or higher
wavelengths of the visible spectrum, particularly in the yellow to orange to red regions of the
visible spectrum. The luminescent material may for example emit light predominantly in the range of wavelengths from 580 nm to 660 nm, e.g. primarily at or around about 620 nm
(orange-red). The yellow to orange to red region of the visible spectrum is preferred since it
is found that these colours are more readily visible in or through the fume or smoke created
during the welding or cutting operations than colours towards the blue-violet end of the
spectrum.
Suitable luminescent materials can be chosen from organic and inorganic materials,
and from liquid or solid formulations, having the required excitation and emission properties.
Organic dyes known as "daylight fluorescent pigments" can provide suitable markers.
Rhodamine and fluorescein dyes may be suitable, although specific and optimum fluorescent
materials have not been identified at this stage of development. It is expected however that
an ordinarily skilled chemist could readily identify suitable materials by reference to
published properties for luminescent materials or by routine empirical testing.
The workpiece marker preferably further includes a filler mixed with the luminescent
material. The filler may be a solid material whereby the workpiece marker can be held by
hand and manipulated by a user to apply the markings to the workpiece. Preferably, the filler
itself creates a marking on the workpiece which is visible in daylight or other illumination
conditions enabling human visibility of the markings formed by the filler. The filler may
comprise chalk in a particulate form mixed with the luminescent material. In the case of a
luminescent material in solid solution or suspended in a solid transparent material such as an
organic resin, the chalk may be mixed in a proportion of 60%o by weight with 40% by weight
of the resin/luminescent material particles.
The workpiece marker may further include a binder which binds the luminescent
material in a solid form which can be held and manipulated by a user to apply the markings
to the workpiece. The binder may comprise a resin material which is substantially translucent to the visible radiation emitted by the luminescent material making the markings
on the workpiece visible during the welding or cutting operation. A suitable resin binder
may be a thermosetting or thermoplastic resin binder. Melamine sulphonamide
formaldehyde resin may be suitable as a carrier or medium for the luminescent material
and/or as a binder for the chalk and active material mixture.
As mentioned above in the summary of the invention, the second aspect of the
invention provides a welding or cutting aid system for aiding a welding or high temperature
cutting operation, the system including: a workpiece marker which includes a luminescent
material in a form or medium for application to a workpiece, the luminescent material having
the property of enabling creation of markings on the workpiece which are visible during the
welding or cutting operation through eyesight protecting means of the operator, and a light
filter to be interposed in use between the workpiece and the operator's eyes, the light filter
being translucent to a band of frequencies which includes the frequency or frequencies of
visible light emission of the luminescent material of the marker, the light filter substantially
attenuating radiation at frequencies spaced from said band of frequencies.
The light filter preferably includes a panel of coloured light filter material to be
interposed in use between the workpiece and the eyes of the operator, the panel being
arranged to be mounted by the eyesight protecting means through which the operator views
the welding or cutting operation. In the case of a conventional eyesight protecting means
which comprises a mask having a window through which the operator views the welding or
cutting operation, the window is provided with a dark filter medium interposed in the light
path to reduce the intensity of light from the welding or cutting operation reaching the
operator's eyes, and is also provided with the light filter additionally interposed in the light
path from the site of the welding or cutting operation to the operator's eyes. The dark filter may be the conventional dark glass which cuts out ultraviolet and infrared radiation and
substantially attenuates visible radiation so as to protect the operator's eyes. The light filter
can be also a panel, e.g. of the standard 180 mm by 50 mm size, to fit into the mountings
provided by welder's masks for the dark filter. The light filter is desirably selected to pass
light at frequencies or wavelengths which the dark filter also passes and also if desired to
substantially attenuate UV and/or IR radiation. The frequencies that the light filter passes
preferably match the visible emission frequencies of the luminescent material. For example
for luminescent material emitting at a wavelength of about 620 nm, an orange-red light filter
would be preferred.
The light filter may be a lighting gel of the kind used for projecting coloured light
such as in theatre stage lighting, the lighting gel having a characteristic colour substantially
matched to the colour of visible light emission of the luminescent material. For the
suggested orange-red luminescent material emissions, an "Amber-rose No. 22" gel filter is
suitable.
The light filter enhances the visibility of the markings on the workpiece by
attenuating or cutting out other wavelengths and helping the operator's eyes be more sensitive
to the wavelength of the emissions from the luminescent material.
Also as mentioned above in the summary of the invention, the third aspect of the
invention provides a method of aiding a weldmg or high temperature cutting operation being
carried out on a workpiece, the method including the steps of: applying to the workpiece a
luminescent material so as to create markings on the workpiece at locations intended to guide
or inform an operator monitoring or controlling the welding or cutting operation, the
luminescent material having the property of emitting visible radiation, when excited during
the welding or cutting operation, and conducting a" welding or high temperature cutting operation on the workpiece while viewing the workpiece through an eyesight protector
apparatus, the eyesight protector apparatus being translucent to a band of frequencies which
includes the frequency or frequencies of visible light emission of the luminescent material,
and controlling the welding or cutting operation in accordance with the visible markings of
luminescent material on the workpiece.
The most common situation for application of the method of the invention would be
where the visible markings applied to the workpiece define or at least include a welding or
cutting path which the welding or cutting operation is to follow. However, other marks such
as prompts for the nature or location of the welds and/or cuts can also be used.
In the preferred method, the step of applying markings comprises the application of
markings to the workpiece using a workpiece marker according to the first aspect of the
invention.
Likewise in the preferred method the steps of applying the markings and conducting
the weldmg or cutting operation comprises using an aid system according to the second
aspect of the invention by application of markings to the workpiece using the workpiece
marker of the aid system and interposing the light filter in the light path during the welding
or cutting operation.
It is to be understood that various alterations, modifications and/or additions may be
made to the features of the possible and preferred embodiment(s) of the invention as herein
described without departing from the spirit and scope of the invention as defined in the
following claims.

Claims

1. A workpiece marker for use in a welding or high temperature cutting operation, the
marker including a luminescent material in a form or medium for application to a workpiece,
the luminescent material having the property of enabling creation of markings on the
workpiece which are visible during the welding or cutting operation through eyesight
protecting means of the welder to thereby provide a visible aid for the welding or cutting
operation.
2. A workpiece marker as claimed in claim 1 wherein the luminescent material emits
radiation in the visible spectrum upon excitation during the welding or cutting operation.
3. A workpiece marker as claimed in claim 2 wherein the weldmg or cutting operation
generates the exciting radiation which stimulates the luminescent material to emit the visible
radiation.
4. A workpiece marker as claimed in claim 3 wherein the welding or cutting operation
includes generation of an electric arc, the radiation being emitted by the arc constituting the
exciting radiation which impinges on the luminescent material to stimulate it to emit the
visible radiation.
5. A workpiece marker as claimed in claim 4 wherein the luminescent material is
excited by ultraviolet radiation emitted by the electric arc to emit the visible radiation.
6. A workpiece marker as claimed in any one of the preceding claims wherein the
luminescent material is a fluorescent material.
7. A workpiece marker as claimed in any one of claims 1 to 5 wherein the luminescent
material is a phosphorescent material.
8. A workpiece marker as claimed in any one of the preceding claims wherein the
luminescent material emits visible radiation in the middle or higher wavelengths of the
visible spectrum.
9. A workpiece marker as claimed in claim 8 wherein the luminescent material emits
visible radiation in the yellow to orange to red regions of the visible spectrum.
10. A workpiece marker as claimed in any one of the preceding claims and further
including a filler mixed with the luminescent material.
11. A workpiece marker as claimed in claim 10 wherein the filler is a solid material
whereby the workpiece marker can be held by hand and manipulated by a user to apply the
markings to the workpiece.
12. A workpiece marker as claimed in claim 10 or 11 wherein the filler itself creates a
marking on the workpiece which is visible in daylight or other illimiination conditions
enabling human visibility of the markings formed by the filler.
13. A workpiece marker as claimed in any one of claims 10 to 12 wherein the filler
comprises chalk in a particulate form mixed with the luminescent material.
14. A workpiece marker as claimed in any one of the preceding claims and further
including a binder which binds the luminescent material in a solid form which can be held
and manipulated by a user to apply the markings to the workpiece.
15. A workpiece marker as claimed in claim 14 wherein the binder comprises a resin
material which is substantially translucent to the visible radiation emitted by the luminescent
material making the markings on the workpiece visible during the welding or cutting
operation.
16. A welding or cutting aid system for aiding a welding or high temperature cutting
operation, the system including: a workpiece marker which includes a luminescent material in a form or medium for
application to a workpiece, the luminescent material having the property of enabling creation
of markings on the workpiece which are visible during the welding or cutting operation
through eyesight protecting means of the operator, and
a light filter to be interposed in use between the workpiece and the operator's eyes, the
light filter being translucent to a band of frequencies which includes the frequency or
frequencies of visible light emission of the luminescent material of the marker, the light filter
substantially attenuating radiation at frequencies spaced from said band of frequencies.
17. A system as claimed in claim 16 wherein the light filter includes a panel of coloured
light filter material to be interposed in use between the workpiece and the eyes of the
operator, the panel being arranged to be mounted by the eyesight protecting means through
which the operator views the welding or cutting operation.
18. A system as claimed in claim 17 wherein the eyesight protecting means comprises a
mask having a window through which the operator views the welding or cutting operation,
the window being provided with a dark filter medium interposed in the light path to reduce
the intensity of light from the welding or cutting operation reaching the operator's eyes, the
light filter being additionally interposed in the light path from the site of the welding or
cutting operation to the operator's eyes.
19. A system as claimed in claim 17 or 18 wherein the light filter is a lighting gel of the
k nd used for projecting coloured light such as in theatre stage lighting, the lighting gel
having a characteristic colour substantially matched to the colour of visible light emission of
the luminescent material.
20. A system as claimed in any one of claims 16 to 19 wherein the marker consists of a
workpiece marker as claimed in any one of claims 2 to 15.
21. A method of aiding a welding or high temperature cutting operation being carried out
on a workpiece, the method including the steps of:
applying to the workpiece a luminescent material so as to create markings on the
workpiece at locations intended to guide or inform an operator momtoring or controlling the
welding or cutting operation, the luminescent material having the property of emitting visible
radiation, when excited during the welding or cutting operation, and
conducting a welding or high temperature cutting operation on the workpiece while
viewing the workpiece through an eyesight protector apparatus, the eyesight protector
apparatus being translucent to a band of frequencies which includes the frequency or
frequencies of visible light emission of the luminescent material, and controlling the welding
or cutting operation in accordance with the visible markings of luminescent material on the
workpiece.
22. A method as claimed in claim 21 wherein the visible markings applied to the
workpiece include a welding or cutting path which the welding or cutting operation is to
follow.
23. A method as claimed in claim 21 or 22 wherein the step of applying markings
comprises the application of markings to the workpiece using a workpiece marker as claimed
in any one of claims 1 to 15.
24. A method as claimed in claim 21 or 22 wherein the steps of applying the markings
and conducting the welding or cutting operation comprises using an aid system as claimed in
any one of claims 16 to 20 by application of markings to the workpiece using the workpiece
marker of the aid system and interposing the light filter in the light path during the welding
or cutting operation.
PCT/AU2000/000789 1999-04-22 2000-06-30 Aid for welding or cutting WO2001081037A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
AU30119/00A AU3011900A (en) 1999-04-22 2000-04-26 Aid for welding or cutting
AU30119/00 2000-04-26

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
AU2000255132A AU2000255132A1 (en) 2000-04-26 2000-06-30 Aid for welding or cutting
NZ522758A NZ522758A (en) 2000-04-26 2000-06-30 Luminescent marking of piece to be cut or welded
EP00940050A EP1294525A1 (en) 2000-04-26 2000-06-30 Aid for welding or cutting
CA002445544A CA2445544A1 (en) 2000-04-26 2000-06-30 Aid for welding or cutting
US10/281,896 US20030160038A1 (en) 2000-04-26 2002-10-25 Aid for welding or cutting

Related Child Applications (1)

Application Number Title Priority Date Filing Date
US10/281,896 Continuation-In-Part US20030160038A1 (en) 2000-04-26 2002-10-25 Aid for welding or cutting

Publications (1)

Publication Number Publication Date
WO2001081037A1 true WO2001081037A1 (en) 2001-11-01

Family

ID=3718050

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/AU2000/000789 WO2001081037A1 (en) 1999-04-22 2000-06-30 Aid for welding or cutting

Country Status (5)

Country Link
EP (1) EP1294525A1 (en)
AU (1) AU2005100981A4 (en)
CA (1) CA2445544A1 (en)
NZ (1) NZ522758A (en)
WO (1) WO2001081037A1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2498726A (en) * 2012-01-25 2013-07-31 3M Innovative Properties Co Automatic welding filter with tunable spectral transmission
CN103958118A (en) * 2011-09-23 2014-07-30 卢卡斯米尔霍特公司 Luminescent braze preforms
WO2017194968A1 (en) * 2016-05-12 2017-11-16 Rollem Limited System and method for cutting, kiss-cutting, scoring or perforating material

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107248170B (en) * 2017-04-24 2020-06-26 辽宁师范大学 Weld joint tracking method based on image matching

Citations (6)

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Publication number Priority date Publication date Assignee Title
JPS5968603A (en) * 1982-10-14 1984-04-18 Maakutetsuku:Kk Method and device for detecting and following up weld line of welded steel pipe
JPS63313672A (en) * 1987-06-15 1988-12-21 Daihen Corp Plasma arc working method
AU7674891A (en) * 1990-04-05 1991-10-30 Playstation Inc. Phosphorescent marking material
DE4035229A1 (en) * 1990-11-06 1992-05-07 Anton Schloegel Welding area marker - is a reflecting or fluorescent medium to give welder a better view of the workpiece through the tinted goggles or face mask
WO1993022388A1 (en) * 1992-05-06 1993-11-11 Schloegel Anton Marking agent for use at high temperatures
US5529615A (en) * 1994-06-15 1996-06-25 Playstation Inc. Marking material and method for suspending pigment particles

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5968603A (en) * 1982-10-14 1984-04-18 Maakutetsuku:Kk Method and device for detecting and following up weld line of welded steel pipe
JPS63313672A (en) * 1987-06-15 1988-12-21 Daihen Corp Plasma arc working method
AU7674891A (en) * 1990-04-05 1991-10-30 Playstation Inc. Phosphorescent marking material
DE4035229A1 (en) * 1990-11-06 1992-05-07 Anton Schloegel Welding area marker - is a reflecting or fluorescent medium to give welder a better view of the workpiece through the tinted goggles or face mask
WO1993022388A1 (en) * 1992-05-06 1993-11-11 Schloegel Anton Marking agent for use at high temperatures
US5529615A (en) * 1994-06-15 1996-06-25 Playstation Inc. Marking material and method for suspending pigment particles

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* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN (M - 813) *
PATENT ABSTRACTS OF JAPAN (P - 294) *

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103958118A (en) * 2011-09-23 2014-07-30 卢卡斯米尔霍特公司 Luminescent braze preforms
GB2498726A (en) * 2012-01-25 2013-07-31 3M Innovative Properties Co Automatic welding filter with tunable spectral transmission
US9254226B2 (en) 2012-01-25 2016-02-09 3M Innovative Properties Company Automatic welding filter with tunable spectral transmission
WO2017194968A1 (en) * 2016-05-12 2017-11-16 Rollem Limited System and method for cutting, kiss-cutting, scoring or perforating material

Also Published As

Publication number Publication date
NZ522758A (en) 2004-09-24
AU2005100981A4 (en) 2006-01-05
EP1294525A1 (en) 2003-03-26
CA2445544A1 (en) 2001-11-01

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