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 Grinding burn detection, grinding process control
When optimum grinding conditions are not present, surface damage may occur as a result of overheating the part. E.g. using the wrong parameters in grinding can seriously degrade a component. The surface damage can range from retempering of small areas with minimal affected depth to softening often entire hardened case. Although it may appear to be acceptable, soft areas can cause a drastic reduction in a component’s lifetime. Eliminating such defected components from the ready-to-use components is thus important for guaranteeing a proper functioning of the component in its final use. This can be done by adjusting the grinding process before major losses of material and time and thus important capital and by separating the defected components from the finished products. Magnetoelastic technique called Barkhausen Noise Analysis (BNA) is an excellent method for monitoring the grinding quality of components made of hardened steel. This BNA technique is applicable to ferromagnetic materials, such as most ferritic steels, iron, nickel and cobalt. Measurements can even be made through thin non-ferrous coatings, such as chromium. As a result, BNA has been adopted as a standard quality control method by many automotive component manufacturers, e.g. gear and bearing manufacturers. Some car and truck engine manufacturers, for example, use Stresstech’s BNA systems to inspect their entire camshaft production and to guarantee their quality. Stresstech’s manual, semiautomatic, and fully automated BNA inspection systems including - testing instruments
- sensors
- software
- component handling units
cover a broad variety of applications in the automotive, aviation, energy production, oil and gas, and engineering industries. |
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