邓建新
高效切削加工、新型刀具材料、陶瓷材料摩擦磨损、工程陶瓷产品的研制开发与应用等
个性化签名
- 姓名:邓建新
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学术头衔:
博士生导师, 教育部“新世纪优秀人才支持计划”入选者
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学科领域:
机械制造自动化
- 研究兴趣:高效切削加工、新型刀具材料、陶瓷材料摩擦磨损、工程陶瓷产品的研制开发与应用等
邓建新教授,男,1966年出生,湖南省人,博士,教授,博士生导师,山东大学刀具材料及其检测实验室主任。1987年获学士学位,1990年获硕士学位,1995年获博士学位。1995年晋升为副教授,1997年晋升为教授,1999年被评为博士导师,1998~1999年在香港理工大学进行合作研究。2004年入选教育部新世纪优秀人才支持计划,2002年入选教育部优秀青年教师资助计划,2002年获得山东省青年科技奖,2001年被评为山东省中青年学术骨干,曾被评为校先进科技工作者,享受政府特殊津贴。先后培养研究生20多名。主要从事高效切削加工、新型刀具材料、陶瓷材料摩擦磨损、工程陶瓷产品的研制开发与应用等方面的研究工作。获省部级以上科技进步奖10项,其中:获教育部科技进步一等奖1项(第1位)、获山东省自然科学二等奖1项(第1位)、获山东省科技进步二等奖1项(第1位)、获教育部自然科学二等奖2项(第2位)、获国家发明四等奖1项(第3位)。在国内外学术期刊上共发表论文180余篇,所发表的论文在国内外产生了很大影响,先后被SCI收录42篇、EI收录65篇。作为项目负责人和主要研究者先后承担国家、省部、军工和国际合作等科研课题30项,其中:主持国家自然科学基金课题3项、教育部课题3项,军工项目1项、山东省课题6项项和企业课题多项。研制成功多种新型陶瓷刀具和陶瓷喷嘴,获得国家专利5项、申请并受理国家发明专利4项。
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【期刊论文】TECHNIQUES FOR IMPROVED SURFACE INTEGRITY OF ELECTRODISCHARGE MACHINED CERAMIC COMPOSITES
邓建新, J. X. Deng and T. C. Lee
Surface Engineering 2000 Vol. 16 No.5,-0001,():
-1年11月30日
Good surface integrity is frequently required of struc-tural ceramic components, since the lifetime of a ceramic component is, in most cases, determined by its surface features. In this study, two mechanical surface treatments, i.e. ultrasonic and abrasive blasting sur-face finishing, have been introduced to the surface of electrodischarge machined ceramic composites to improve their surface integrity. T he surface roughness, hardness, and topography of the ceramic composites were examined after electrodischarge machining (EDM) and surface treatment. T he eVect of surface integrity on the strength and its distribution was investigated. Results show that ultrasonic and abrasive blasting surface finishing can produce an improvement in both flexural strength and Weibull modulus, and are two eVective procedures to improve the surface integrity of the EDM ceramic composites.
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【期刊论文】Ultrasonic machining of alumina-based ceramic composites
邓建新, Deng Jianxin a, *, Lee Taichiu b
D. Jianxin, L. Taichiu/Journal of the European Ceramic Society 22(2002)1235-1241,-0001,():
-1年11月30日
In ultrasonic machining (USM), the material is removed primarily by repeated impact of the abrasive particles, and the material removal rate (MRR) and surface integrity are influenced by various factors including the material parameters of the workpiece materials. In this study, effect of the properties and microstructure of the workpiece materials on the MRR in ultrasonic machining of alumina-based ceramic composites was investigated. The distributions of strength of the ultrasonic machined specimens were used to evaluate the surface integrity. Results showed that fracture toughness of the ceramic composite played an important role with respect to MRR. In USM of whisker-reinforced alumina composites, the MRR depended on the whisker orientation. Studies of strength distributions of alumina-based ceramic composites machined by USMdemonstrated that the flexural strength varied narrowly from the mean value, and the composites with high fracture toughness showed higher Weibull modulus.
Al2O3, Composites, Machining, Ultrasonic machining
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【期刊论文】Wear behavior of ceramic nozzles in sand blasting treatments
邓建新, Deng Jianxin*, Feng Yihua, Ding Zeliang, Shi Peiwei
D. Jianxin et al./Journal of the European Ceramic Society 23(2003)323-329,-0001,():
-1年11月30日
Sand blasting nozzle is the most critical part in the sand blasting equipment. Ceramics being with high wear resistance have great potentials as the sand blasting nozzle materials. In this paper, monolithic B4C andAl2O3/(W,Ti)C ceramic composite were developed to be used as nozzle materials. The wear behavior of nozzles made from these ceramic materials was compared by determining the cumulative mass loss and the erosion rates. Effect of the factors that influence the nozzle wear was investigated. Results showed that the hardness of the nozzles plays an important role with respect to its erosion wear in sand blasting processes. The monolithic B4C nozzles being with high hardness exhibited lower erosion rates, while the Al2O3/(W,Ti)C nozzles with relative low hardness showed higher erosion rates under the same test conditions. Studies of the worn surface of the ceramic nozzles demonstrated that monolithic B4C nozzles exhibited a brittle fracture induced removal process, while Al2O3/(W,Ti)C nozzles showed mainly a plowing type of material removal mode.
Abrasive jet machining, Machining, Nozzles, Sand blasting, Wear resistance
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邓建新, Deng Jianxin*, Cao Tongkun, Liu Lili
D. Jianxin et al./Journal of the European Ceramic Society 25(2005)1073-1079,-0001,():
-1年11月30日
In this paper, Al2O3/TiB2 ceramic cutting tools with different TiB2 content were produced by hot pressing. The fundamental properties of these ceramic cutting tools were examined. Dry high-speed machining tests were carried out on hardened steel. The tool wear, the cutting temperature, the cutting forces, and the friction coefficient between the tool and the chip were measured. It was shown that both the wear rates and the friction coefficient at the tool-chip interface of Al2O3/TiB2 ceramic cutting tools in dry high-speed machining of hardened steel were reduced compared with that of in low-speed machining. The mechanisms responsible were determined to be the formation of a self-lubricating oxide film on the tool-chip interface owing to the tribological-chemical reaction by the elevated cutting temperature. The composition of the self-lubricating film was found to be the oxidation product of TiB2 grains, which serves as lubricating additive on the wear track of the tool rake face. The appearance of this self-lubricating oxide film contributed to the improvement in wear resistance and the decrease of the friction coefficient. This action was even more effective with higher TiB2 content. Cutting speed was found to have a profound effect on the self-lubricating behavior. In dry low-speed machining of hardened steel, the Al2O3/TiB2 tools showed mainly adhesive and abrasive wear. While in dry high-speed machining, oxidation wear of the ceramic tools was the dominant mechanism due to the very high cutting temperature. No oxide film was formed on the tool–chip interface while machining in nitrogen atmosphere, and the tool wear resistance was correspondingly decreased.
Cutting tools, Machining, Cutting, Lubrication, Friction, Al2O3, TiB2
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【期刊论文】Microstructure and mechanical properties of hot-pressed B4C/(W,Ti)C ceramic composites
邓建新, Jianxin Deng*, Jun Zhou, Yihua Feng, Zeliang Ding
J. Deng et al./Ceramics International 28(2002)425-430,-0001,():
-1年11月30日
In this paper, B4C/(W,Ti)C ceramic composites with different content of solid-solution (W,Ti)C were produced by hot pressing. The effect of (W,Ti)C content on the microstructure and mechanical properties of B4C/(W,Ti)C ceramic composites has been studied. Results showed that a chemical reaction took place for this system during hot pressing, and resulted in a B4C/TiB2/W2B5 composite with high density and improved mechanical properties compared to monolithic B4C ceramic. Densification rates of the B4C-based ceramic composites were found to be affected by addition of (W,Ti)C. Increasing (W,Ti)C content led to an increase of the densification rates of the composites. The sintering temperature was lowered from 2150℃ for monolithic B4C to 1850℃ for the B4C/(W,Ti)C composites. The fracture toughness and flexural strength continuously increased with increasing (W,Ti)C content up to 50wt.%, while the hardness decreased with increasing (W,Ti)C content.
B., Microstructure, C., Mechanical properties, B4C, (, W,, Ti), C, Ceramic composites
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邓建新, Deng Jianxin a, *, Lee Taichiu b
Deng Jianxin, Lee Taichiu/Ceramics International 26(2000)825-830,-0001,():
-1年11月30日
Good surface integrity is frequently required for structural ceramic components, since the lifetime of a ceramic component is in most cases determined by its surface features. In this study, the surface integrity of electro-discharge machined, ultrasonic machined, and diamond saw cut ceramic composites has been investigated and compared. The surface roughness, hardness, and topography of the machined surface were examined. Flexural strength and its distributions were used to evaluate the e
A., Finishing, B., Composites, Machining
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