预合金结合剂成分及烧结工艺对金刚石工具性能的影响
|
摘要
以Fe_(40)Cu_(40)Co_(20)预合金粉、Cu_(80)Sn_(20)预合金粉和WC粉为原料,通过真空无压烧结方法制得金刚石工具胎体样品,并采用扫描电子显微镜、洛氏硬度计、阿基米德排水法分析了预合金粉含量对样品微观形貌、硬度和相对致密度的影响。结果表明,Fe_(40)Cu_(40)Co_(20)预合金粉、Cu_(80)Sn_(20)预合金粉和WC粉含量分别为50%、40%和10%时,样品具有最佳的综合力学性能,胎体的相对致密度和硬度分别达到94. 6%和105HRB。在此基础上,探讨了最佳胎体配方条件下冷压压力及保温时间对样品力学性能的影响,研究发现冷压压力为45 MPa、烧结保温时间为30 min时,样品具有良好的综合力学性能。本工作可为建立金刚石工具的无压烧结方法提供前期实验探索。
In this paper,Fe_(40) Cu_(40) Co_(20) pre-alloyed powders,Cu_(80) Sn_(20) pre-alloyed powders and WC powders were used as raw materials. The matrix samples of diamond tools were prepared by vacuum pressureless sintering process. Scanning electron microscope,Rockwell hardness tester and Archimedes Drainage Act were used to check the microscope,hardness and relative density of samples. And the effects of different content of pre-alloyed powders on the micro-morphology,hardness and relative density of the carcass were studied. The results showed that when the content of Fe_(40) Cu_(40) Co_(20) pre-alloyed powder,Cu_(80) Sn_(20) pre-alloyed powder and WC powder was 50%,40% and 10% respectively,the overall performance of the matrix was the best. The density and hardness could reach 94. 6% and 105 HRB,respectively. On the basis of the best formula,the effects of different cold pressure and holding time on the mechanical properties of the matrix were studied. It was found that the matrix possessed superiority comprehensive mechanical properties when the cold pressing pressure was 45 MPa and the sintering holding time was 30 min.This work can provide preliminary experimental for the establishment of the pressureless sintering process for diamond tools.
In this paper,Fe_(40) Cu_(40) Co_(20) pre-alloyed powders,Cu_(80) Sn_(20) pre-alloyed powders and WC powders were used as raw materials. The matrix samples of diamond tools were prepared by vacuum pressureless sintering process. Scanning electron microscope,Rockwell hardness tester and Archimedes Drainage Act were used to check the microscope,hardness and relative density of samples. And the effects of different content of pre-alloyed powders on the micro-morphology,hardness and relative density of the carcass were studied. The results showed that when the content of Fe_(40) Cu_(40) Co_(20) pre-alloyed powder,Cu_(80) Sn_(20) pre-alloyed powder and WC powder was 50%,40% and 10% respectively,the overall performance of the matrix was the best. The density and hardness could reach 94. 6% and 105 HRB,respectively. On the basis of the best formula,the effects of different cold pressure and holding time on the mechanical properties of the matrix were studied. It was found that the matrix possessed superiority comprehensive mechanical properties when the cold pressing pressure was 45 MPa and the sintering holding time was 30 min.This work can provide preliminary experimental for the establishment of the pressureless sintering process for diamond tools.
引文
1 Wang S X,Liu X J,Geng L,et al. Chinese Journal of Nonferrous Metals,2008,18(3),471(in Chinese).王双喜,刘雪敬,耿林,等.中国有色金属学报,2008,18(3),471.
2 Wu Y H,Li G B,Lv J W. Diamond&Abrasives Engineering,2006(2),23 (in Chinese).吴玉会,李国彬,吕建伟.金刚石与磨料磨具工程,2006(2),23.
3 Zhang G X,Ding T R,Long W M. Welding Technology,2012,41(12),38 (in Chinese).张冠星,丁天然,龙伟民.焊接技术,2012,41(12),38.
4 Meng G H,Lei X X,Lu A J,et al. Powder Metallurgy Technology,2015,33(2),105(in Chinese).蒙光海,雷晓旭,卢安军,等.粉末冶金技术,2015,33(2),105.
5 Lu X,He X B,Qu X H. Journal of Aeronautical Materials,2009,29(1),16(in Chinese).路新,何新波,曲选辉.航空材料学报,2009,29(1),16.
6 Dong X L,Kong L. Superhard Material Engineering,2009,21(5),11(in Chinese).董先龙,孔辽.超硬材料工程,2009,21(5),11.
7 Hou M,Guo S H,Gao J Y,et al. Diamond&Abrasives Engineering,2017(5),35(in Chinese).侯明,郭胜惠,高冀芸,等.金刚石与磨料磨具工程,2017(5),35.
8 Xie D L. Study on preparation and application of Fe CoCu pre-alloyed powders for deep prospecting diamond bits. Ph.D. Thesis,Hunan University,China,2016(in Chinese).谢德龙.深孔钻探金刚石钻头用Fe CoCu预合金粉的制备及性能研究.博士学位论文,湖南大学,2016.
9 He J. Preparation and properties of Fe-Cu-Sn based diamond saw matrix.Master’s Thesis,Zhongnan University,China,2010(in Chinese).何娟. Fe-Cu-Sn基金刚石锯片胎体材料制备及性能研究.硕士学位论文,中南大学,2010.
10 Liang L X F. Metal binary phase diagram manual,Chemical Industry Press,China,2009(in Chinese).粱基谢夫,金属二元相图手册,化学工业出版社,2009.
11 Huang W J,Meng F C. Journal of Chongqing University of Technology(Natural Science),2010,24(10),28(in Chinese).黄伟九,孟范成.重庆理工大学学报(自然科学),2010,24(10),28.
12 Yan J,Jiang K Y. Journal of Chongqing University of Technology(Natural Science),2012,26(9),42(in Chinese).闫洁,江开勇.重庆理工大学学报(自然科学),2012,26(9),42.
13 Yang L Q,Luo Y,Luo W L. Superhard Material Engineering,2016,28(6),10(in Chinese).杨理清,骆颖,罗文来.超硬材料工程,2016,28(6),10.
14 Chen Z W. Development of special impregnated diamond drill bits suitable for Jin chuan mining area. Master’s Thesis,Zhongnan University,China,2008(in Chinese).陈章文.适合金川矿区的特种孕镶金刚石钻头研制.硕士学位论文,中南大学,2008.
2 Wu Y H,Li G B,Lv J W. Diamond&Abrasives Engineering,2006(2),23 (in Chinese).吴玉会,李国彬,吕建伟.金刚石与磨料磨具工程,2006(2),23.
3 Zhang G X,Ding T R,Long W M. Welding Technology,2012,41(12),38 (in Chinese).张冠星,丁天然,龙伟民.焊接技术,2012,41(12),38.
4 Meng G H,Lei X X,Lu A J,et al. Powder Metallurgy Technology,2015,33(2),105(in Chinese).蒙光海,雷晓旭,卢安军,等.粉末冶金技术,2015,33(2),105.
5 Lu X,He X B,Qu X H. Journal of Aeronautical Materials,2009,29(1),16(in Chinese).路新,何新波,曲选辉.航空材料学报,2009,29(1),16.
6 Dong X L,Kong L. Superhard Material Engineering,2009,21(5),11(in Chinese).董先龙,孔辽.超硬材料工程,2009,21(5),11.
7 Hou M,Guo S H,Gao J Y,et al. Diamond&Abrasives Engineering,2017(5),35(in Chinese).侯明,郭胜惠,高冀芸,等.金刚石与磨料磨具工程,2017(5),35.
8 Xie D L. Study on preparation and application of Fe CoCu pre-alloyed powders for deep prospecting diamond bits. Ph.D. Thesis,Hunan University,China,2016(in Chinese).谢德龙.深孔钻探金刚石钻头用Fe CoCu预合金粉的制备及性能研究.博士学位论文,湖南大学,2016.
9 He J. Preparation and properties of Fe-Cu-Sn based diamond saw matrix.Master’s Thesis,Zhongnan University,China,2010(in Chinese).何娟. Fe-Cu-Sn基金刚石锯片胎体材料制备及性能研究.硕士学位论文,中南大学,2010.
10 Liang L X F. Metal binary phase diagram manual,Chemical Industry Press,China,2009(in Chinese).粱基谢夫,金属二元相图手册,化学工业出版社,2009.
11 Huang W J,Meng F C. Journal of Chongqing University of Technology(Natural Science),2010,24(10),28(in Chinese).黄伟九,孟范成.重庆理工大学学报(自然科学),2010,24(10),28.
12 Yan J,Jiang K Y. Journal of Chongqing University of Technology(Natural Science),2012,26(9),42(in Chinese).闫洁,江开勇.重庆理工大学学报(自然科学),2012,26(9),42.
13 Yang L Q,Luo Y,Luo W L. Superhard Material Engineering,2016,28(6),10(in Chinese).杨理清,骆颖,罗文来.超硬材料工程,2016,28(6),10.
14 Chen Z W. Development of special impregnated diamond drill bits suitable for Jin chuan mining area. Master’s Thesis,Zhongnan University,China,2008(in Chinese).陈章文.适合金川矿区的特种孕镶金刚石钻头研制.硕士学位论文,中南大学,2008.