RACA Journal March 2022 | Page 58

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Technical
Steyn further adds , “ The cutting of stainless steel is optimised with the use of our high-performance thin cut-off wheels . These 1mm wheels cut faster , thereby producing less heat and heat discolouration . Burr formation is also minimised which in turn requires less rework to remove .”
Tungsten Carbide burrs with INOX cut offer an extremely high stock removal rate thanks to its innovative tooth geometry leading to significantly less heat , heat discolouration and vibration .
“ Greater understanding of the correct tool selection and application of how these interact with stainless steel is a conversation we welcome ,” Steyn concludes .
Different speciality bits provide finishing off of angled or hardto-reach sections .
Heat discolouration in the grinding area , which occurs due to stainless steel being a bad conductor of heat , can alter the metal ’ s metallurgical compound and reduce its corrosion resistance .
To prevent this , flap discs which feature ceramic oxide ( CO ) grain with an active grinding and cooling coating ( FREEZE ), reduces heat build-up and heat discolouration when grinding stainless steel .
As part of their service to customers , PFERD South Africa offers guidance on working with stainless steel to ensure customers benefit from everything this versatile material has to offer . Experts are available to assess any application and provide clients with the optimum product and machine combination to ensure the ideal and most cost-effective solution through their over 8 500 products in their range . RACA

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RACA Journal I March 2022 www . hvacronline . co . za