Specimens of mild steel plate were cleaned to near-white by air blasting with different types, sizes and hardnesses of steel abrasives. The cleaning rate increased as the abrasive hardness increased, and the adhesion between a zinc coating and the blast-cleaned surface improved. For abrasives of a given size, both cleaning rate and adhesion increased as surface profile measurements Ra, Rmax, and Rz increased. For a given hardness, smaller abrasives cleaned more rapidly than did larger abrasives. Tests in a centrifugal blast machine demonstrated the superior abrasiveness of a harder abrasive.

Subject
Abrasive blasting, Test methods, Zinc rich coatings, Materials, Surface hardness, Abrasives, Machinery, Force, Steel, Surface profile, Hardness, Cleaning, Martensite
Keywords:
steel abrasives, cleaning rate, adhesion, surface profile, abrasiveness
© 1994 Association for Materials Protection and Performance (AMPP). All rights reserved. No part of this publication may be reproduced, stored in a retrieval system, or transmitted, in any form or by any means (electronic, mechanical, photocopying, recording, or otherwise) without the prior written permission of AMPP. Positions and opinions advanced in this work are those of the author(s) and not necessarily those of AMPP. Responsibility for the content of the work lies solely with the author(s).
1994
Association for Materials Protection and Performance (AMPP)
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