金刚石与磨料磨具工程

Study on etching of diamond monocrystal by MnO₂

XIAO Changjiang, CHEN Yiguang, LI Zhengxin

2019, 39(5): 1-6. doi: 10.13394/j.cnki.jgszz.2019.5.0001

Abstract(522)

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Abstract:
In order to compare the surface etching of diamond monocrystal, diamond is etched directly in air or with MnO₂ at different temperatures. The etching degree on the surface of diamond monocrystal was characterized by surface morphology, etching area and compressive strength of diamond single particle...

Preparation and characterization of diamond single crystal with native rough surface

ZHAO Ziyong, LI Zhenyu, CAI Yule, CHEN Zhimin, DING Yiliang, LAI Yang, QI Lixia

2019, 39(5): 7-12. doi: 10.13394/j.cnki.jgszz.2019.5.0002

Abstract(648)

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Abstract:
Single crystal diamond with rough surface is obtained by adding a new type of catalyst, optimizing composition of the catalyst, adjusting reduction process, optimizing the temperature and pressure conditions in the synthetic procedure. The regulation of crystal color and surface morphology are reali...

Iron etching of diamond in hydrogen-free atmosphere

SHAO Zengming, SU Yanbin, ZHANG Cunsheng, WU Ruige

2019, 39(5): 13-15. doi: 10.13394/j.cnki.jgszz.2019.5.0003

Abstract(506)

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Abstract:
Diamond surface was etched by iron powder in hydrogen-free atmosphere. Scanning electron microscopy (SEM), laser probe analyzer (LPA) and X-ray Diffractometer (XRD) were used to characterize the surface morphology, pit depth, structure and composition of the etched diamond. The etching behavior of d...

Influence of solution composition on weight increasing when electroless plating nickel onto diamond powder

FANG Lili, CHENG Bingliang, LI Yizhe

2019, 39(5): 16-21. doi: 10.13394/j.cnki.jgszz.2019.5.0004

Abstract(517)

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Abstract:
The influence of concentration of complexant, dispersing agent and stable agent on the weight rate of electroless nickel plating on diamond powder was investigated by means of orthogonal experiment method. The results show that the influence order of factors on weight is as follows: ammonia> citr...

Comparison of analysis methods of boric acid in nickel plating solution

ZHAO Jun, XING Bo, JIA Hefeng, LUO Miaodi, ZHU Xiaowei

2019, 39(5): 22-25. doi: 10.13394/j.cnki.jgszz.2019.5.0005

Abstract(555)

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Abstract:
The accuracy, precision and detection efficiency of boric acid content analysis methods in two commonly used nickel plating solutions were compared, namely separation determination and quick determination. The results show that the accuracy and precision of bot methods can meet the requirements of p...

Alumina-bonded nano-polycrystalline diamond powder synthesized by detonation sintering

YAN Xianrong, LI Xiaojie, WANG Xiaohong, YAN Honghao, FENG Bo, ZENG Zheyan

2019, 39(5): 26-32. doi: 10.13394/j.cnki.jgszz.2019.5.0006

Abstract(561)

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Alumina-bonded nano-polycrystalline diamond was synthesized by detonation sintering. The thermal stability, morphology and crystal structure are analyzed by thermogravimetric analyzer (TGA), scanning electron microscope (SEM) and transmission electron microscopes (TEM). Results show that the nano-po...

Comparative experimental study of machining quality of polycrystalline diamond

DENG Fuming, ZHANG Liyan, DENG Wenli, LIU Jialin, YANG Xuefeng, YAN Xiao, LU Xuejun

2019, 39(5): 33-38. doi: 10.13394/j.cnki.jgszz.2019.5.0007

Abstract(518)

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Abstract:
In order to solve the problems of surface forming and polishing of polycrystalline diamond (PCD), and improve PCD processing efficiency and surface quality, the PCD surface was machined by EDM coarse/fine discharge or diamond grinding wheel. The surface morphology, composition and microstructure of ...

Microstructure and properties of solid PCBN composites with different TiN contents

DENG Fuming, HE Xuehua, DENG Wenli, ZHANG Zhuowei, WANG Hao, ZHANG Peng, FENG Fei

2019, 39(5): 39-43. doi: 10.13394/j.cnki.jgszz.2019.5.0008

Abstract(535)

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The solid polycrystalline cubic boron nitride (PCBN) was sintered by CBN powders, TiN and a certain amount of Al. It was investigated that the effect of TiN contents on the microstructure and mechanical properties of the solid PCBN composites under high pressure and high temperature. The phase compo...

Study on simulation prediction and control method of burns in plunge grinding

ZHU Huanhuan, LI Houjia, ZHANG Lihua, JIA Baofu

2019, 39(5): 44-49. doi: 10.13394/j.cnki.jgszz.2019.5.0009

Abstract(577)

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According to the model of grinding heat transformation and material removal, a new method for grinding burning simulation prediction and control is proposed based on monitoring power signal. The grinding power signal can be monitored by computer to control the CNC infeed process parameters and the a...

Burr formation simulation of end face grinding core of servo valve based on DEFORM^3D

MA Tianrong, DANG Jiaqiang, AN Qinglong

2019, 39(5): 50-56. doi: 10.13394/j.cnki.jgszz.2019.5.0010

Abstract(595)

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In order to investigate the effect of abrasive grain arrangement on the grinding burr formation, the end face grinding process of the servo valve core was simplified to design a grinding simulation with a single abrasive grain. The grinding process, in which the abrasive grains were arranged in the ...

Research and new development of GaAs substrate fabrication technology

LUO Bin, YAN Qiusheng

2019, 39(5): 57-66. doi: 10.13394/j.cnki.jgszz.2019.5.0011

Abstract(1278)

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The second generation semiconductor material, gallium arsenide (GaAs), is widely used in the field of microelectronics and optoelectronic devices. It is used as the basic material for substrate epitaxial growth and device preparation. The surface integrity of GaAs wafer is required to have ultra-smo...

Study on high efficient lapping of calcium fluoride crystal with fixed abrasive pad

SHEN Gongming, GU Qunfei, WANG Kerong, TANG Chao, NIU Fengli, ZHU Yongwei

2019, 39(5): 67-72. doi: 10.13394/j.cnki.jgszz.2019.5.0012

Abstract(697)

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The high efficiency lapping of calcium fluoride crystal is the prerequisite of its ultra-precision polishing. Two kinds of abrasives, single crystal diamond and agglomerated diamond were chosen to prepare the fixed abrasive pad (FAP). A comparison of lapping performance between agglomerated diamond ...

Effect of abrasive particle exposure height on grinding vibration of bearing steel

YANG Wei, ZHU Jianhui, SHI Chaoyu, ZHAO Yanjun, ZHAO Jiong, HUI Zhen, GUO Xuanyang

2019, 39(5): 73-78. doi: 10.13394/j.cnki.jgszz.2019.5.0013

Abstract(503)

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In order to explore the influence of grinding wheel surface abrasive state on grinding vibration and improve grinding quality, a grinding vibration model was constructed and the corresponding relationship between grinding particle state, contact rigidity and grinding vibration was deduced. Dressing-...

Wear evolution of brown alumina abrasive wheel based on step grinding method

ZHU Yejun, DING Wenfeng, CHEN Zhenzhen, YI Peng, RAO Zhiwen

2019, 39(5): 79-84. doi: 10.13394/j.cnki.jgszz.2019.5.0014

Abstract(506)

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In order to increase the manufacturing efficiency and improve the surface integrity of K4125 nickel-based superalloy, the grinding method with alumina abrasive wheel was studied. The wear mechanism of the grinding wheel was investigated based on step grinding method. The results indicate that the gr...

Experimental study on the shearing failure of high frequency induction brazed diamond abrasive

YANG Qin, LING Jingliang, CUI Changcai, HUANG Hui

2019, 39(5): 85-91. doi: 10.13394/j.cnki.jgszz.2019.5.0015

Abstract(540)

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Four different filler alloys were selected according to the different active elements from two common solder systems of Ni base and Ag base. The diamond abrasive grains were brazed on steel with high frequency induction heating and were sheared with pushing experiment. Diamond failure process was re...

Surface characteristics and wire wear of electroplated diamond wire saw slicing photovoltaic polycrystalline silicon

PANG Jiwei, GAO Yufei, LI Sheng

2019, 39(5): 92-96. doi: 10.13394/j.cnki.jgszz.2019.5.0016

Abstract(628)

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The surface characteristics of photovoltaic (PV) polycrystalline silicon cut by electroplated diamond wire saw affects the fracture strength and the subsequent texture process of wafers. The experiment of electroplated diamond wire sawing PV polycrystalline silicon was conducted in order to analyze ...

Analysis of turning temperature field of titanium alloy based on nanofluid cooling

SHAO Weifan

2019, 39(5): 97-102. doi: 10.13394/j.cnki.jgszz.2019.5.0017

Abstract(601)

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When turning titanium alloys, the high temperature in the processing zone reduces the surface quality and intensifies the wear of diamond turning tools. Cooling methods such as atomized nano-fluid injection are used to improve the turning environment, improve the processing quality of titanium alloy...

Study on stress distribution of rake face based on finite element method

WANG Yu, FAN Jiangbo, XU Changcheng, LI Rui, ZHANG Xiaolong

2019, 39(5): 103-107. doi: 10.13394/j.cnki.jgszz.2019.5.0018

Abstract(585)

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The stress distribution of the contact area between tool and chip on tool rake face when cutting is studied by finite element method. The friction coefficient and the maximum shear stress are related to the contact condition at the interface. Results show that from tool tip to the separation point o...

Application of weakening matrix additive in small diameter diamond saws

YANG Dong, CHEN Zhiqiang, WANG Xiaodong, WU Xiwang

2019, 39(5): 108-111. doi: 10.13394/j.cnki.jgszz.2019.5.0019

Abstract(538)

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Silicon-iron was added into the matrix of Fe-based metal bonded diamond saw blade as a weakening agent. The effects of the agent on the mechanical properties, sharpness and wear resistance of the matrix were investigated by using universal material testing machine, pendulum impact testing machine an...

Ultrasonic machining technology in dental materials

LI Quanzhou, WANG Chengyong, ZHANG Yue, CHEN Zhihua, ZHAO Danna, ZHENG Lijuan, CHEN Danying, ZENG Chaofeng

2019, 39(5): 112-122. doi: 10.13394/j.cnki.jgszz.2019.5.0020

Abstract(727)

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According to the different processing materials (including tooth, jaw bone, implanted metal and various types of dental ceramics) used in the field of stomatology, this paper reviewed the up-to-date treatment methods and their equipment applying the ultrasonic machining technology (include the ultra...

Research status and development prospect of B₄C

ZHAO Liang, LI Yanguo, ZOU Qin, WANG Mingzhi

2019, 39(5): 123-129. doi: 10.13394/j.cnki.jgszz.2019.5.0021

Abstract(592)

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Abstract:
B₄C has excellent properties such as high hardness, good wear resistance, high thermal conductivity, good neutron absorption performance and stable chemical properties. It is widely used in military, nuclear, engineering and other fields. The common preparation methods include carbothermal reduction...

2019 Vol. 39, No. 5

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