陈闻超,程继贵,陈鹏起,王晶辉,张建华,李其龙

• 1:合肥工业大学材料科学与工程学院
• 2:安徽省粉末冶金工程技术研究中心
• 3:合肥波林新材料股份有限公司

摘要(Abstract)：

通过加入新型润滑剂制得Fe-2Cu-0.8C预混合铁基粉末,并制备了同成分机械混合粉末进行对比试验。对粉末流动性、松装密度以及压制性能进行了测试,并对烧结体的微观组织进行表征。结果表明:制备的预混合粉末流动性和松装密度均优于机械混合粉。当润滑剂加入量为0.6 mass%时,经600 MPa压力下压制所得的生坯密度为7.01 g/cm~3,烧结体密度为7.11 g/cm~3,批量压制时零件质量变化小于0.15%。通过预混合工艺,使得铜和石墨颗粒粘结到铁颗粒表面上,从而达到防止偏析和提高批次稳定性的目的。使用预混合粉末不仅提高了烧结体的尺寸精度和性能,同时可制备出更光洁的零件表面,进行形状复杂零件生产时更能体现出其在稳定性方面的优势。

关键词(KeyWords)： 粉末冶金;预混合铁基粉末;微观组织;稳定性

Abstract:

Keywords:

基金项目(Foundation): 科技型中小企业技术创新基金(13C26213402742)

作者(Author): 陈闻超,程继贵,陈鹏起,王晶辉,张建华,李其龙

DOI: 10.13289/j.issn.1009-6264.2019-0400

参考文献(References)：

• [1] 郭彪,葛昌纯,颜永年,等.金属粉末压制成形机理及影响因素模拟分析[J].材料导报,2012,26(14):145-149.GUO Biao,GE Chang-chun,YAN Yong-nian,et al.Simulation and analysis of compaction mechanism and influencing factors in powder compacting process[J].Materials Review,2012,26(14):145-149.
• [2] 张晓宇,吴迪,季长涛,等.微量纳米铜对铁基粉末冶金制品致密性的影响[J].材料热处理学报,2010,31(8):46-49.ZHANG Xiao-yu,WU Di,JI Chang-tao.Effect of trace nano-copper on the density of Fe-base powder metallurgy parts[J].Transactions of Materials and Heat Treatment,2010,31(8):46-49.
• [3] Schade C,Marucci M,Hanejko F.通过用粘结剂处理预混粉改进粉末的使用性能[J].粉末冶金工业,2014(2):5-10.Schade C,Marucci M,Hanejko F.Improved powder performance through binder treatment of premixes[J].Powder Metallurgy Industry,2014(2):5-10.
• [4] Chawla N,Murphy T,Narasimhan K,et al.Axial fatigue behavior of binder-treated versus diffusion alloyed powder metallurgy steels[J].Materials Science and Engineering A,2001,308(1/2):180-188.
• [5] Zhang W,Wang L,Wang R,et al.Process analysis of binder treatment on iron-based alloy powder[J].Powder Metallurgy,2017:1-7.
• [6] James W,Semel F,Narasimhan K.替代扩散合金化粉末的粘结剂处理分的研制[J].粉末冶金工业,2009(3):4-8.James W,Semel F,Narasimhan K.The development of binder-treated alternatives to diffusion alloyed powders[J].Powder Metallurgy Industry,2009(3):4-8.
• [7] 李霆,宫本奎.混料工艺对预混合铁粉质量的影响[J].金属功能材料,2018,25(1):43-49.LI Ting,GONG Ben-kui.Effect of premixed iron powder on mixing process[J].Metallic Functional Materials,2018,25(1):43-49.
• [8] 欧阳鸿武,廖奇音,何世文,等.二组元粉体的混合实验研究[J].粉末冶金材料科学与工程,2004(1):18-23.OUYANG Hong-wu,LIAO Qi-yin,HE Shi-wen,et al.Experimental study on mixing of two-component powders in rotating drum blender[J].Powder Metallurgy Materials Science and Engineering,2004(1):18-23.
• [9] Wu C,Cocks A.Flow behaviour of powders during die filling[J].Powder Metallurgy,2004,47(2):127-136.
• [10] Uenosono S,Ozaki Y.Difference in filling property between two types of binder treated powders made of atomized or reduced iron powder[J].Materials Science Forum,2007,534-536:1613-1616.
• [11] Narasimhan K.Sintering of powder mixtures and the growth of ferrous powder metallurgy[J].Materials Chemistry and Physics,2001,67(1/3):56-65.
• [12] Satoh M,Yoshida T,Yanagida T,et al.Evaluation of the mixing process based on a disintegrating rate model of the powder agglomerates[J].Journal of the Society of Powder Technology,1997,34(5):330-336.
• [13] 王行,李松林,彭家科,等.不同黏结剂对Fe-2Cu-0.8C预混合钢粉性能的影响[J].有色金属科学与工程,2014,5(1):14-19.WANG Hang,LI Song-lin,PENG Jia-ke,et al.Effect of different binders on properties of Fe-2Cu-0.8C premix steel powder[J].Nonferrous Metals Science and Engineering,2014,5(1):14-19.
• [14] Jang G,Hur M,Kang S.Study on the development of a substitution process by powder metallurgy in automobile parts[J].Journal of Materials Processing Technology,2000,100(1):110-115.
• [15] 谷曼,王德广,焦明华,等.铁基粉末温压过程中的致密化[J].材料热处理学报,2014,35(6):18-22.GU Man,WANG De-guang,JIAO Ming-hua,et al.Densification of iron-based powder during warm compaction process[J].Transactions of Materials and Heat Treatment,2014,35(6):18-22.
• [16] 张国涛,尹延国,刘振明,等.复层铁基粉末冶金材料的摩擦学性能[J].材料热处理学报,2017,38(1):7-13.ZHANG Guo-tao,YIN Yan-guo,LIU Zhen-ming,et al.Tribological properties of multi-layer iron based powder metallurgy materials[J].Transactions of Materials and Heat Treatment,2017,38(1):7-13.

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