Weld Rod Alloy Test - criterionndt.comcriterionndt.com/brochures/Weld_Rod_Alloy_Test.pdf · Eddy...
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Eddy Current System Solutions Scope The critical nature of the welds required both environmental control of the location during the weld process and the need to immediately verify the weld wire material in-line. The weld process depends on an accurate match of the weld wire mate- rial and the material of the equipment being bonded. Application The manufacturer required 100% confidence in the content of weld rod to prevent welds with dissimilar metals. The use of dissimilar metals leads to a number of poor weld quality issues such as material distortion, cracks, disbonds, and the potential for early corrosion. Before ECT Before using ECT, the manufacturer had no easy way to distinguish between the two types of weld wire used within the manufacturing facility. The man- ufacturer had to maintain meticulous records of the weld wire coils from vendor to use in plant. Separation of these wire coils relied heavily on human intervention. The Challenge Limitations of the welding equipment created the most challenging aspect of this application. The weld wire coils are located within one of three vacuum chambers which are connected to the weld area by pipes. The available area within the vacuum chamber is limited. The manufacturer also required the ability to poll each of the three weld wire drums independently and identify the wire types within at any time in the process. The Solution Working with the given size and loca- tion of the manufacturer’s welding system, a group of custom probes was designed that would fit within the weld wire drums. To assist with the customer’s envi- ronmental control needs, the probes were flexible and probe connec- tions worked with existing feed-through connectors. The coil pairs were built to compare a reference weld wire sample with the online stream of wire. Like all Criterion probes, the probes were durab- le with stainless-steel guide sleeves that protect the online coil from severe wear. The signals of the three probes were analyzed using a Zetec MIZ®-27CT Instrument. The MIZ-27CT provides alarm gates for each of the three probes as well as industrial input/output to communicate with the plant PLC sys- tem. The automated ECT solution met the customer goal to instantly verify the weld wire material in use and com- plete their quality assurance circle. The MIZ®-27CT Instrument is set to recognize the eddy current signature of the part under test. Parts outside the set parameters (dissimilar alloy) trigger an alarm that immediately notifies the operator. Eddy Current Verification of Welding Rod Alloy Enhances Weld Quality Component Testing Solutions 3702 West Valley Highway North, Suite 202 Auburn, WA 98001 U.S.A. Tel: +1 253-929-8800 Fax: +1 253-929-8851 Email: [email protected] www.criterionndt.com Printed in the USA
Transcript of Weld Rod Alloy Test - criterionndt.comcriterionndt.com/brochures/Weld_Rod_Alloy_Test.pdf · Eddy...
Eddy Current System Solutions
Scope
The critical nature of the welds required both environmental control of the location during the weld process and the need to immediately verify the weld wire material in-line. The weld process depends on an accurate match of the weld wire mate-rial and the material of the equipment being bonded.ApplicationThe manufacturer required 100% confidence in the content of weld rod to prevent welds with dissimilar metals. The use of dissimilar metals leads to a number of poor weld quality issues such as material distortion, cracks, disbonds, and the potential for early corrosion.Before ECTBefore using ECT, the manufacturer had no easy way to distinguish between the two types of weld wire used within
the manufacturing facility. The man-ufacturer had to maintain meticulous records of the weld wire coils from vendor to use in plant. Separation of these wire coils relied heavily on human intervention. The ChallengeLimitations of the welding equipment created the most challenging aspect of this application. The weld wire coils are located within one of three vacuum chambers which are connected to the weld area by pipes. The available area within the vacuum chamber is limited.The manufacturer also required the ability to poll each of the three weld wire drums independently and identify the wire types within at any time in the process.The SolutionWorking with the given size and loca-tion of the manufacturer’s welding system, a group of custom probes was
designed that would fit within the weld wire drums. To assist with the customer’s envi-ronmental control needs, the probes were
flexible and probe connec-tions worked with existing feed-through connectors. The coil pairs were built to compare a reference weld
wire sample with the online stream of wire. Like all Criterion probes, the probes were durab- le with stainless-steel guide sleeves that protect the online coil from severe wear.The signals of the three probes were analyzed using a Zetec MIZ®-27CTInstrument. The MIZ-27CT provides alarm gates for each of the three probes as well as industrial input/output to communicate with the plant PLC sys-tem.The automated ECT solution met the customer goal to instantly verify the weld wire material in use and com-plete their quality assurance circle.The MIZ®-27CT Instrument
is set to recognize the eddy current signature of the part under test. Parts outside the set parameters (dissimilar alloy) trigger an alarm that immediately notifies theoperator.
Eddy Current Verification of Welding RodAlloy Enhances Weld Quality
Component Testing Solutions
3702 West Valley Highway North, Suite 202
Auburn, WA 98001
U.S.A.Tel: +1 253-929-8800
Fax: +1 253-929-8851
Email: [email protected]
www.criterionndt.com Printed in the USA
