Input control: Identification of bad quality rolled wire (drawing lines for thick wire)
Process control: Monitoring of production lines to avoid scrap (medium and fine drawing blocks)
Final inspection: Assurance of crack-free material after last drawing operation or in rewinding plants
Typical defects: Laps, holes, longitudinal cracks, tension cracks from annealing, damage from transport devices, damage through defective drawing dies
Production line: Single and multiple drawing lines, rewinding lines, all materials
The surface of drawn wire and tubing must be free of cracks, holes and other material defects as even small surface defects can lead to defective end products, critical in items such as surgical instruments. Eddy current testing is extremely successful in detecting surface defects at various stages during the production process. For the best test results, encircling testing is used together with rotational testing.
Eddy current probe types
Encircling inspection. A robust, simple encircling coil surrounds the test piece and detects a multitude of defects in ferrous (with magnetization) and nonferrous materials.
Rotational testing. The eddy current probes of the rotating system spin around the test piece as it moves through the equipment. The rotating system is particularly sensitive to longitudinal defects and excellent for large tube diameters (up to 130 mm (5 1/8 in). PRÜFTECHNIKs series of rotating systems (RS35HS, RS65, RS130) was designed for easy operation and maintenance, and with the raw industrial environment in mind.
Air conditioner tubing is inspected inline after extrusion. An encircling coil tests for outer surface defects and checks that the walls of the interior chambers are intact. It is spec
DM Engineering Provider Co., Ltd is experienced team company which was formed by great connection of firming worldwide suppliers. Our main business covers steel pipe machinery, related equipments, electric components and automation system. Beside of Steel Pipe machinery we also provide High Frequency equipment for several of dielectric heating applications.
Steel Pipe Field
Tube Mill Line
Heating Equipment such Welder and Seam Annealler
Finishing Line such end facing machine, pipe threading machine
Hydro tester for API, ASTM standard
Galvanizing Plant and Galvanize equipment such Star Wheel and Zinc Kettle
Automation such Forming and Sizing DC Drive Cabinet