WC-8Co与Al2O3-TiC两种拉拔模具磨损行为研究

doi:10.3724/SP.J.1077.2012.11652

无机材料学报 ›› 2012, Vol. 27 ›› Issue (8): 876-882.DOI: 10.3724/SP.J.1077.2012.11652 CSTR: 32189.14.SP.J.1077.2012.11652

WC-8Co与Al₂O₃-TiC两种拉拔模具磨损行为研究

杨学锋, 王守仁, 杨丽颖, 王砚军, 张冰, 宋培龙

(济南大学机械工程学院, 济南250022)

收稿日期:2011-10-18 修回日期:2011-11-22 出版日期:2012-08-20 网络出版日期:2012-07-09
基金资助:
国家自然科学青年科学基金(51005100); 中国博士后基金(20110491572); 山东省科技发展计划(2012GGB01166)

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

YANG Xue-Feng, WANG Shou-Ren, YANG Li-Ying, WANG Yan-Jun, ZHANG Bing, SONG Pei-Long

(School of Mechanical Engineering, University of Jinan, Jinan 250022, China)

Received:2011-10-18 Revised:2011-11-22 Published:2012-08-20 Online:2012-07-09
Supported by:
National Natural Science Foundation for Young Scholar of China (51005100); China Postdoctoral Science Foundation (20110491572); Scientific and Technologic Development Programme of Shandong Province (2012GGB01166)

摘要/Abstract

摘要： 采用冷、热压烧结技术分别制备了WC-8Co和Al₂O₃-TiC两种拉拔模具. 研究了该两种不同拉拔模具用于实际拉拔加工45#钢线时的摩擦磨损行为, 并对其磨损机理进行了分析. 结果表明: 两种拉拔模具均具有较好的强度和硬度, 能较好地进行拉拔加工, 其内孔磨损在工作区及定径区最为严重, 磨损面有金属脱落元素、模具颗粒脱落元素及润滑脂残留物. WC-8Co和Al₂O₃-TiC两种拉拔模具的磨损机理不尽相同, WC-8Co模具主要为粘着磨损和磨粒磨损, 而Al₂O₃-TiC模具则以磨粒磨损和表面疲劳磨损为主. Al₂O₃-TiC拉拔模具更适合于45#钢线材的拉拨.

关键词: 拉拔模具, 磨损行为, 硬质合金, 复合陶瓷

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

中图分类号:

TQ174
TH117

杨学锋, 王守仁, 杨丽颖, 王砚军, 张冰, 宋培龙. WC-8Co与Al₂O₃-TiC两种拉拔模具磨损行为研究[J]. 无机材料学报, 2012, 27(8): 876-882.

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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WC-8Co与Al₂O₃-TiC两种拉拔模具磨损行为研究

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

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