SERVICING THE AUTOMOTIVE MANUFACTURING SECTOR FOR 24 YEARS
ARTICLES
RSWA F1 Resistance Spot Weld Analyzer
May 5, 2017
RSWA is an ultrasonic device designed for quality control and NDE of resistance spot welds. RSWA is as a portable and simple-in-operation device capable of producing images of spot weld’s internal structures. In addition to live on-screen image, this device performs estimation of the nugget diameter and compares it with predefined minimum nugget requirements. Using the unique technology of multi-channel ultrasonic matrix transducer, RSWA collects data from the surface and from the internal structures of the nugget. Special algorithms use this data to reconstruct the image of the spot weld and estimate the average diameter of the nugget area in real time.
Features:
◾single-frame and continuous data acquisition modes
◾automatic and manual nugget size estimation
◾automatic detection of scanning depth inside the metal
◾built-in reporting system and file storage
Applications:
◾Metal stacks: 2T and 3T; 0.6–2.4 mm plate thicknesses
◾Types of materials: mild steel, high strength steel, dual phase ultra high strength steel
◾Coatings: bare, zinc coating (galvanized, galvaneal), e-coating, paint
Water Saver/Tip Loss Monitor and Water Retract Actuator
May 1, 2017
All too often when changing welding electrodes the person removing the caps is immediately splashed with cooling water from the weld gun.
If this has happened to you, then you know this type of water is usually pretty nasty! It could also be treated with expensive chemicals to inhibit corrosion and improve cooling so losing it on the floor is not the best solution.
Another scenario for water loss is in the case of a broken water hose, cracked adapters or electrode cap sticking to a part and being pulled off the weld gun when the robot retracts.
We can address both these situations with our line of Copperhead products, in this case our:
“Water Saver/Tip Loss Monitor and Water Retract Actuator”
For more information, check out our WaterSaver System.
In resistance welding the copper electrode, cap or tip is in contact with the material being welded. High current is passed through the weld gun causing the material being welded to become molten. When the current is stopped, the weld gun remains closed long enough for the material to solidify and bond together.
Through this process the copper electrode, cap or tips as they are most commonly known, can become “mushroomed”. When the cap face becomes larger something must be changed in the weld setup in order to maintain the required nugget size.
One of the best solutions is to dress the copper tips back to their original size and shape with a Copperhead brand Tip Dresser.
We can supply solutions for single station tip dressing, cutters and holders for any brand machine you currently have as well as special units that contain the tip dresser and patented automatic cap changer on a single stand.
