Commonly used transducers are the M106, M1036 (both 2.25 MHz), M109, and M110 (both 5 MHz). Transducer selection depends on the range of thickness to be measured and the acoustic properties of the specific cast metal. ![]() If metal thickness exceeds approximately 12.7 mm (0.5 in.), High Penetration software should be used. Wall thickness tests of castings can be performed with the 38DL PLUS™ or 45MG thickness gauge with Single Element software. Ultrasonic techniques offer a nondestructive alternative to microscopic cross-sectional examination and tensile strength tests for determining the degree of nodularity, because nodularity can be correlated to sound velocity. Testing for nodularity is especially important in the automotive industry and other fields where the safe operation of cast iron components is a major concern. ![]() The size and distribution of graphite inclusions (nodularity) have a major impact on the mechanical strength of cast iron. These conditions produce ultrasonic indications that can be identified by a trained operator using an ultrasonic flaw detector with appropriate transducers. Voids, porosity, inclusions, and cracks in the metal can occur during the casting process. An ultrasonic thickness gauge can measure wall thickness from one side, with no need to cut the part for access. Core shifts during the casting process can result in a part that is too thin on one side and too thick on the other. Ultrasonic thickness gauging is commonly used to measure hollow castings with complex shapes, such as automobile engine blocks. Velocitybased ultrasonic testing using either thickness gauges or flaw detectors can also be used to quantify graphite nodularity in cast iron. Ultrasonic flaw detectors can also be used to identify discontinuities like hidden porosity, inclusions, voids, and cracks. Ultrasonic thickness gauges can be used to measure the wall dimensions of hollow castings. Today, microprocessor-based instruments using ultrasonic sound waves can accurately provide much more information about the hidden internal structure of both ferrous and nonferrous castings. In the past, a foundry worker would estimate the quality of a casting by tapping it with a hammer to evaluate the sound of the ring. The art of casting metal into specific shapes has been practiced for thousands of years but only in recent decades have modern ultrasonic NDT tools been available to help ensure product integrity. This application note provides a general overview of ultrasonic nondestructive testing applications in the foundry industry, including thickness gauging, flaw detection, and nodularity testing. Consultation Reception about Introduction.OEM Microscope Components for Integration.Semiconductor & Flat Panel Display Inspection Microscopes ▾. ![]() ![]() Aerospace/Wind Blade Inspection Scanners.Flaw Detectors / Phased Array Flaw Detectors ▾.Thickness and Flaw Inspection Solutions ▾.However, the perseverance in efforts, quench for innovation and commitment to be the trusted name have been the staunch pillars of the legacy of Lada Foundry. Modern technologies, state-of-the-art infrastructure and latest processes contribute to this success journey. The team is full of diversified masterminds who bring in a variety of skills, ideas and techniques they join hands to work towards the common goal of ‘Delivering The Best’ and they succeed perfectly. Being at the fore-front of SG/Ductile iron casting manufacturers, Lada Foundry has been successful in developing an annual production capacity of 10000MT with a casting weight range of 0.8 kg to 90 kg. Adhering to its principle of delivering the best quality products, it presents an ideal blend of modern innovation and years of strong experience. Lada Foundry is the preferred source of most of the OEMs. We are one of the few foundries who exclusively manufacture SG/Ductile iron castings. Lada Foundry, a name that makes a difference in the foundry industry as a leading SG/Ductile Iron foundry in India.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |