Abrasivematerial:Common abrasive cutting wheel hascutbrownjade(A),corundum(wA),corundum(BA),silicon carbide(c), the most commonly used iscorundum,becausecorundumhashigh hardness,toughnesslargeparticleFengrui, applicability and the price islowerthan otherabrasivecharacteristics.Corundumsmeltingreductionintheiradequacypointsand secondarylevelsandsand, mainly in thechemical composition: Al2O3 contentlevelsand≥94.5; Al2O3content ofsecondarysand<94.5%; 85%in generalleft and right, and the Fe2O3contentof 4 to5%; thereforethe secondarylevelis lower thanthe hardnessof sandsand, but the price isconcrete cutting discs low; corundumfor a variety ofcarbon andalloy steelprocessingin general; highcorundumhardnessthancorundum, brittleness,grinding heatis small,becausethe price is high, the thermal deformationof the workpiecerequireshours ofuse, but also as amixof abrasivematerialforspecialprocessing; blackcorundumAl2O3content of70 ~ 85%, Fe203content of7 to9%low hardness, cutting force is poor,butthe price is cheap; blacksilicon carbidehighhardness andbrittlenessgood, sharpcutting edge, goodself-sharpeningproperties,good thermal conductivity,have an advantageinterms ofprocessingnon-ferrous metals, plastics, rubber and cast iron.
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