Research on the Wear Behaviors of WC-8Co and Al2O3-TiC Conical Dies

doi:10.3724/SP.J.1077.2012.11652

Abstract

Abstract: Two types of conical dies, WC-8Co and Al₂O₃-TiC, were fabricated by way of cold and hot press sintering method, respectively. The wear and tear behaviors were investigated when the die samples were applied on the real 45 steel wire drawing process. After that, the friction mechanisms under the experimental phenomena were carefully studied. It is found that both of there two types of conical dies showed reasonable hardness and strength, indicating acceptable drawing ability. Further study reveals that the deformation zone and the invariable zone are the most worn area of the inner bore surface. Metal shedding, fallen-off granules from dies and leftover of lubrication grease are observed on the surface. Two different wear mechanisms for WC-8Co (adhesive and abrasive wear) and Al₂O₃-TiC (adhesive and abrasive wear) are then concluded. By comparison, conical die made from Al₂O₃-TiC is more suitable for 45 steel wire drawing process.

Key words: conical die, wear behaviors, cemented tungsten carbide, ceramics composite

CLC Number:

TQ174
TH117

YANG Xue-Feng, WANG Shou-Ren, YANG Li-Ying, WANG Yan-Jun, ZHANG Bing, SONG Pei-Long. Research on the Wear Behaviors of WC-8Co and Al₂O₃-TiC Conical Dies[J]. Journal of Inorganic Materials, 2012, 27(8): 876-882.

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Research on the Wear Behaviors of WC-8Co and Al₂O₃-TiC Conical Dies

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