| 超音速火焰喷涂技术在模具修复中的应用 |
| |
| 引用本文： | 张祥林,李伟,赵杰,王爱华.超音速火焰喷涂技术在模具修复中的应用[J].模具工业,2010,36(9):62-65. |
| |
| 作者姓名： | 张祥林 李伟 赵杰 王爱华 |
| |
| 作者单位： | 华中科技大学,材料成形与模具技术国家重点实验室,湖北,武汉,430074 |
| |
| 基金项目： | 国家自然科学基金资助项目，材料成形与模具技术国家重点实验室资助项目 |
| |
| 摘 要： | 采用超音速火焰喷涂(HVOF)技术,在Cr12MoV模具钢表面制备了纳米结构的WC_12Co金属陶瓷涂层,对涂层的组织、结合强度、剪切强度以及抗冲击性能进行了测试研究。测得涂层平均剪切强度达150.8 MPa,涂层的结合强度大于80 MPa,涂层硬度高于1000 HV。试样涂层在冲击1 000次时,表面形貌以表面蚀坑为主,涂层表面出现龟壳状裂纹。运用HVOF技术对某冷挤压模修复后,使用效果良好。
|
| 关 键 词： | 模具 修复 超音速火焰喷涂 性能 |
Application of HVOF thermal spraying technology in die repairing |
| |
| ZHANG Xiang-lin,LI Wei,ZHAO Jie,WANG Ai-hua.Application of HVOF thermal spraying technology in die repairing[J].Die & Mould Industry,2010,36(9):62-65. |
| |
| Authors: | ZHANG Xiang-lin LI Wei ZHAO Jie WANG Ai-hua |
| |
| Affiliation: | (State Key Laboratory of Material Processing and Die ＆ Mould Technology,Huazhong University of Science and Technology,Wuhan,Hubei 430074,China) |
| |
| Abstract: | Nano-structured WC-12Co cermet coatings were prepared on a cold-work die steel（Cr12MoV） substrate by using high velocity oxygen fuel（HVOF） spraying technology;then the microstructure,the bonding strength and shear strength were investigated.The results show that the average shear strength can reach 150.8 MPa;the bonding strength is more than 80 MPa,and the average hardness value in excess of 1 000 HV.The surface morphology is mainly corrosion pits and sheet erosion when the sample coatings are under impact test for 1 000 times,and tortoiseshell-like cracks also appear.Application of HVOF technology to the cold extrusion die repairing proved to have a great potential. |
| |
| Keywords: | die repairing high velocity oxygen fuel spraying（HVOF） properties |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
|
