Abstract
Reject metal matrix composites parts reclaimed from industrial market were re-melted in a medium frequency induction furnace. A composites recycled roller used for cold-rolled wire mill was fabricated by centrifugal casting. The properties, microstructures and application of the recycled roller were investigated. The results show that the recycled roller is a composite structure consisting of outer recycled composite layer reinforced with remaining carbide particle containing W in re-melting and inner matrix. The carbide particle was evenly distributed in the composite layer of 15-18mm in thickness and volume fraction is approximately 65-70 vol. %; hardness attained to HRA81-84 in the composite layer, and HRA74-76 in inner matrix where the toughness was over 6.0 J/cm 2 ; the wear resistance and service life of the recycled roller and the original composites roller are almost same when same carbide volume fraction were obtained, but the production cost of the recycled roller decreased by 25%.
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