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cutting performance of surgical electrodes by constructing bionic microstriped structures

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Frontiers of Mechanical Engineering 2023年第1期18卷 163-178页

作者： Kaikai LI Longsheng LU Huaping CHEN Guoxiang JIANG Huanwen DING Min YU Yingxi XIE School of Mechanical&Automotive Engineering South China University of TechnologyGuangzhou 510641China Testing and Technology Center for Industrial Products of Shenzhen Customs District Shenzhen 518067China South China University of Technology School of Medicine Guangzhou 510006China Department of Orthopaedics Guangzhou First People’s HospitalGuangzhou 510180China Department of General Surgery Guangdong Provincial People’s HospitalGuangdong Academy of Medical SciencesGuangzhou 510080China

Surgical electrodes rely on thermal effect of high-frequency current and are a widely used medical tool for cutting and coagulating biological ***,tissue adhesion on the electrode surface and thermal injury to adjacent tissue are serious problems in surgery that can affect cutting performance.A bionic microstriped structure mimicking a banana leaf was constructed on the electrode via nanosecond laser surface texturing,followed by silanization treatment,to enhance *** effect of initial,simple grid-textured,and bionic electrodes with different wettabilities on tissue adhesion and thermal injury were investigated using horizontal and vertical cutting *** showed that the bionic electrode with high lyophobicity can effectively reduce tissue adhesion mass and thermal injury depth/area compared with the initial *** formation mechanism of adhered tissue was discussed in terms of morphological features,and the potential mechanism for antiadhesion and heat dissipation of the bionic electrode was ***,we evaluated the influence of groove depth on tissue adhesion and thermal injury and then verified the antiadhesion stability of the bionic *** study demonstrates a promising approach for improving the cutting performance of surgical electrodes.

关键词： surgical electrodes tissue adhesion thermal injury bionic structures cutting performance medical tools

Relationship Between Thermal Shock Behavior and cutting performance of a Functionally Gradient Ceramic Tool

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厦门大学学报（自然科学版） 2002年第S1期41卷 61-62页

作者： ZHAO Jun, AI Xing, HUANG Xin-ping (School of Mechanical Engineering, Shandong University, Jinan 250061, China)

Based on the deep understanding of the requirements of cutting conditions on ceramic tools, a design model for functionally gradient ceramic tool materials with symmetrical composition distribution was presented in this paper, according to which an Al 2O 3-TiC functionally gradient ceramic tool material FG-1 was synthesized by powder-laminating and uniaxially hot-pressing technique. The thermal shock resistance of the Al 2O 3-TiC functionally gradient ceramics FG-1 was evaluated by water quenching and subsequent three-point bending tests of flexural strength diminution. Comparisons were made with results from parallel experiments conducted using a homogeneous Al 2O 3-TiC ceramics. Functionally gradient ceramics exhibited higher retained strength under all thermal shock temperature differences compared to homogeneous ceramics, indicating the higher thermal shock resistance. The experimental results were supported by the calculation of transient thermal stress field. The cutting performance of the Al 2O 3-TiC functionally gradient ceramic tool FG-1 was also investigated in rough turning the cylindrical surface of exhaust valve of diesel engine in comparison with that of a common Al 2O 3-TiC ceramic tool LT55. The results indicated that the tool life of FG-1 increased by 50 percent over that of LT55. Tool life of LT55 was mainly controlled by thermal shock cracking which was accompanied by mechanical shock. While tool life of FG-1 was mainly controlled by mechanical fatigue crack extension rather than thermal shock cracking, revealing the less thermal shock susceptibility of functionally gradient ceramics than that of common ceramics.

关键词： functionally gradient materials ceramic tool materials thermal shock resistance transient thermal stress cutting performance

Research on the cutting performance of Cubic Boron Nitride Tools

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厦门大学学报（自然科学版） 2002年第S1期41卷 3-4页

作者： ZHENG Xiao-hua 1,2, YU Qi-xun 1, LIN Jing 1, LU Ming 2, PANG Si-qin 1 (1. School of Mechanical Engineering and Automation, Beijing Institute of Technology, Beijing 100081, China 2. School of Mechanical Engineering, Taiyuan University of Technology, Taiyuan 030024, China)

There were only two kinds of superhard tool material at the past, i.e. diamond and cubic boron nitride (CBN). Manmade diamond and CBN are manufactured by the middle of 20th century. Various manufacturing methods and manmade superhard materials were developed later. They were widely used in different industry and science areas. Recently, a new kind of superhard tool material, C 3N 4 coating film, had been developed. American physical scientists, A. M. Liu and M. L. Cohen, designed a new kind of inorganic compound C 3N 4 with the theory of molecule engineering. According to calculation, it can reach or even exceed the hardness of diamond, so material scientists and technique circles draw their attention to it. A high speed steel twist drill coated with C 3N 4 film is applied to the drilling hole process on steel workpiece in cutting tests, the tool life is increased greatly. When the C 3N 4 film is coated on the cemented carbide inserts, the cutting performance is improved, but is not good enough. The data of mechanical performance and cutting tests about this kind of new tool material is given in this paper, it shows that C 3N 4 has a promising future. The anti-wear ability of cutting tool increases sharply after C 3N 4 being coated on HSS tool. Coated HSS drill also has some benefit after being reground. The tool life prolongs after C 3N 4 being coated on cemented carbide inserts, but is not so long as that of C 3N 4 coated HSS tool. When machining PRCM with C 3N 4 thin-film coated cemented carbide tool, the cutting performance is poor and it is much better when machining PRCM with PCBN, PCD compound plates and CVD thick-film coated cutting tool. Some relative aspects need to be deeply discussed and researched, e.g. the existing coating techniques is not good enough and should be improved in the future, the film thickness should be optimized and try to find out the most effective value, the binding force and mutual effect between coated film and substrate need to be

关键词： ultrahard material carbon nitride cutting tools cutting performance

Experimental study for cutting performance of Ti（1-x）AlxN coated drills

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Experimental study for cutting performance of Ti（1-x）AlxN ...

Research on the cutting performance of Cubic Boron Nitride Tools

Fifth International Conference on Surface Engineering

作者： H.Kumehara Department of Mechanical System Engineering Faculty of EngineeringGunma University

(Ti（1-x）AlxN) coated drill is a new product of Mitsubishi *** peculiarities are illustrated briefly in the technical description provided by the manufacturer as follows:after drilling 2000 holes（20 mm in diameter） of stainless steel（SUS340） without serious wear;strengthened wearability and erosion resistance of the physical vapor deposited coating material;lowered stickiness between the flute and the *** at providing enough information for in-process measurement and control,systematical industrial drilling test of AISI 1045 steel workpiece is performed to investigate cutting behavior of this kind of drill and chemical stability of the coating *** paper details the experiment procedure and results in the following aspects:cutting force and torque,temperature,and hole quality under different cutting conditions;flank wear phenomena and feature at different wear stage;structural characterization of the coating material employing X-ray diffraction（XRD） and scanning electronic microscope（SEM）.It is noticeable that the coating material exhibits solid lubricant effect to improve the tribological interaction between the drill and the workpiece and to facilitate chip *** chemical stability of the coating material is demonstrated by the material *** an overall assessment,lifetime of the coated drill is 1.5 times higher than that of the non-coated ones.

关键词： drill coated drill cutting performance lifetime

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Research on the Cutting Performance of Cubic Boron Nitride T...

STUDY ON MULTI-SCALE AND MULTI-PHASE NANOCOMPOSITE CERAMIC TOOLS AND cutting performance

第十届国际制造工程与管理会议

作者： ZHENG Xiao-hua, YU Qi-xun, LIN Jing, LU Ming, PANG Si-qin (1. School of Mechanical Engineering and Automation, Beijing Institute ofTechnology, Beijing 100081, China 2. School of Mechanical Engineering, Taiyuan University of Technology,Taiyuan 030024, China)

＜正＞ There were only two kinds of superhard tool material at the past, i. e. diamond and cubic boron nitride （CBN）. Manmade diamond and CBN are manufactured by the middle of 20th century. Various manufacturing methods and manmade superhard materials were developed later. They were widely used in different industry and science areas. Recently, a new kind of superhard tool material, C3N4 coating film, had been developed. American physical scientists, A. M. Liu and M. L. Cohen, designed a new kind of inorganic compound C3N4 with the theory of molecule engineering. According to calculation, it can reach or even exceed the hardness of diamond, so material scientists and technique circles draw their attention to it.A high speed steel twist drill coated with C3N4 film is applied to the drilling hole process on steel workpiece in cutting tests, the tool life is increased greatly. When the C3 N4 film is coated on the cemented carbide inserts, the cutting performance is improved, but is not good enough. The data of mechanical performance and cutting tests about this kind of new tool material is given in this paper, it shows that C3N4 has a promising *** anti-wear ability of cutting tool increases sharply after C3N4 being coated on HSS tool. Coated HSS drill also has some benefit after being reground. The tool life prolongs after C3 N4 being coated on cemented carbide inserts, but is not so long as that of C3 N4 coated HSS tool. When machining PRCM with C3N4 thin-film coated cemented carbide tool, the cutting performance is poor and it is much better when machining PRCM with PCBN, PCD compound plates and CVD thick-film coated cutting *** relative aspects need to be deeply discussed and researched, e. g. the existing coating techniques is not good enough and should be improved in the future, the film thickness should be optimized and try to find out the most effective value, the binding force and mutual effect between coated film and substrate need to be studied fur

关键词： ultrahard material carbon nitride cutting tools cutting performance

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STUDY ON MULTI-SCALE AND MULTI-PHASE NANOCOMPOSITE CERAMIC T...

Progress on Bionic Textured cutting Tools:A Review and Prospects

第七届海内外青年设计与制造科学会议

作者： Huang Chuanzhen Liu Hanlian Wang Jun and Sun Chengtong Centre for Advanced Jet Engineering Technologies (CaJET) School of Mechanical Engineering Shandong University Jinan 250061 China Currently Visiting Professor The University of New South Wales Australia School of Mechanical and Manufacturing Engineering The University of New South Wales Sydney NSW2052 Australia School of Engineering Linyi Normal University Linyi 276400 Shandong China

＜正＞An advanced ceramic cutting tool material Al2O3/TiC/TiN （LTN） was developed by incorporation and dispersion of micro-scale TiC particle and nano-scale TiN particle in alumina martix. With the optimal dispersing and fabricating technology, this multi-scale and multi-phase nanocomposite ceramic tool material can get both higher flexural strength and fracture toughness than that of Al2O3/TiC （LT） ceramic tool material without nano-scale TiN particle, especially the fracture toughness can reach to 7.8 MPa.m0.5. The nano-scale TiN can lead to the grain fining effect and promote the sintering process to get a higher density. The coexisting transgranular and intergranular fracture mode induced by micro-scale TiC and nano-scale TiN, and the homogeneous and densified microstructure can result in a remarkable strengthening and toughening effect. The cutting performance and wear mechanisms of the advanced multi-scale and multi-phase nanocomposite ceramic cutting tool were researched.

关键词： multi-scale multi-phase ceramic tool material mechanical properties cutting performance

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Journal of Bionic Engineering 2024年第1期21卷 19-55页

作者： Hong Wei Guangjun Chen Zhuang Chen Zhiwei Yu Jiashuai Huang Tianjin Key Laboratory of High Speed cutting and Precision Processing Tianjin 300222China School of Mechanical Engineering Tianjin University of Technology and EducationTianjin 300222China

cutting tools are known as the“productivity”of the manufacturing industry,which affects the production efficiency and quality of the workpiece,and has become the focus of research and attention in academia and ***,traditional cutting tools often suffer from adhesion or wear during the cutting process,which considerably reduces the cutting efficiency and service life of the tools,and makes it difficult to meet current production *** solve the above problems,scholars have introduced bionics into the tool’s design,applying the microscopic structure of the biological surface to the tool surface to alleviate the tool’s *** paper mainly summarizes the research progress of bionic textured cutting ***,categorize whether the bionic texture design is inspired by a single organism or multiple ***,it is discussed that the non-smooth surface of the biological surface has five characteristics:hydrophilic lubricity,wear resistance,drag reduction and hydrophobicity,anti-adhesion,and arrangement,and the non-smooth structure of these different characteristics are applied to the surface of the tool is designed with bionic ***,the cutting performance of bionic textured cutting tools is *** anti-friction and wear-resisting mechanism of bionic textured cutting tools is ***,some pending problems and perspectives have been proposed to provide new inspirations for the design of bionic textured cutting tools.

关键词： Bionic textured cutting tools Biological microstructure characteristics cutting performance Anti-friction and wear-resisting mechanism

Adherent coating on gradient cemented carbide with ultrafine Ti(C_(0.5),N_(0.5))

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Rare Metals 2015年第6期34卷 413-420页

作者： Tian-En Yang Lan Sun Ji Xiong Zhi-Xing Guo Lei Wang Ding Cao School of Manufacturing Science and Engineering Sichuan University Institute of System Engineering Chinese Academy of Engineering Physics

Gradient cemented carbide is usually employed as the snbstrate for coated carbide insert. In this work, gradient cemented carbide with ultrafine Ti（C0.5,N0.5） was prepared and its microstructure and properties were researched. Moreover, this novel substrate was coated to investigate cutting performance. It is found that the average WC grain size in the gradient zone is larger than that in the bulk. Owing to ultrafine Ti（C0.5,N0.5） introduction, gradient cemented carbide prepared by vacuum sintering exhibits full densification. By contrast, the gradient cemented carbide with ultrafine Ti（C0.5,N0.5） shows higher transverse rupture strength （TRS） and hardness than the homogenous one. Gradient cemented carbide suffers small TRS reduction after coating, and the bonding between coatings and gradient substrate is tidy and compact. The coated gradient cemented carbide shows much better endurance and impact resistance than the coated homogenous one. It confirms the superiority of gradient cemented carbide when used as the substrate for coating inserts.

关键词： Gradient cemented carbide UltrafineTi(C0.5,N0.5) Vacuum sintering Transverse rupturestrength cutting performance

Microstructure and properties of YG8 cemented carbide with different pulse currents

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Rare Metals 2020年第5期39卷 597-606页

作者： Liao Wei Yi Yang Gang Yang School of Mechanical Engineering Sichuan UniversityChengdu 610065China College of Arts and Sciences Guangxi Radio and TV UniversityNanning 530022China

In order to study the effect of pulse current treatment on the mechanical properties,microstructure and cutting performance of YG8 cemented carbide,experiments were carried out by using self-made pulse current treatment device to treat cemented carbide samples with different current densities(J=5,10 and 15 A·mm^-2)After the treatment of pulse current,when the current density increased from 5 to 15 A·mm-2,the hardness of the sample was improved to HV 1605,HV 1629 and HV 1653from HV 1574;the transverse rupture strengths of the sample were 2136,2289 and 2364 MPa,which were all higher than that of the untreated sample(2062 MPa)increasing by 3.6%,11.0%and 14.6%,respectively;the corresponding cutting performance was increased by10.1%,13.9%and 19.4%,compared to that of the untreated *** tool’s life was also *** the treatmen of pulse current,pulse current provided the driving force for dislocation motion,making it more likely for the dislocation to multiply and slip,the dislocation density was increased,and the mechanical properties were significantly improved.

关键词： Pulse current YG8 cemented carbide Microstructure Mechanical properties cutting performance