Crack Testing Systems  Manufacturers, Traders, Suppliers

Crack Testing Systems

HPT Hirsch Prüftechnik GmbH and Dr.-Ing. Peter Hirsch have worked on the further development of direct current pulsing technology for the magnetic particle testing (MT testing) and demagnetization of steel parts, and have consequently invented test equipment registered under patent number DE 102 41029B42005.08.25, resulting in receipt of the Rhineland Palatinate Inventor’s Prize in February 2006 as awarded by Investitions- und Strukturbank Rheinland-Pfalz (ISB) GmbH and endowed with a EUR 5,000 prize.
In place of continuous current, steel parts are magnetized or demagnetized using direct current pulsing. In order to reveal cracks or material separations such as fusing or forging defects, these are ideally sprayed with a fluorescent test media, allowing evaluation under a UV LED test lamp even under daylight conditions per EN ISO 9934-1 and documentation with a digital camera.

As an example, some components can be tested for surface cracks and demagnetised using HPT direct current pulse technology:

• Turbine construction: housing, shafts, blades
• Forging: rings, shafts
• Gear construction: housing, gear wheels, shafts
• Engine construction: crankcases, cylinder heads, gear wheels, crankshafts, camshafts, connecting rods
• Mobile crane construction: machine components, steel components, tubular lattice masts
• Large blower construction: impeller blades, impellers, spars, casing
• Off-shore industry: Hydraulic collets, elevator left of over 12 m length can be tested.
• Galvanizing plants: galvanized steel components
• Foundries: Fittings, turbine housings, rotor and guide vanes
• aircraft construction: landing gear, forged parts
• Hydropower plants: Running blades, Pelton wheels with the largest test areas can be tested quickly, safely and economically.
• Shipbuilding: Submarine Pressure Hull
• Wind power stations: Rolling bearing rings, planet carriers, gear rims with internal and external toothing with diameters of up to more than 10 m can be inspected and demagnetized in the crane while suspended.