CN 41-1243/TG ISSN 1006-852X

2021 Vol. 41, No. 1

Display Method:
2021, 41(1): 1-4.
Abstract:
A new pretreatment method of pre-fixing seeds based on diamond-particles-impregnated cemented carbide substrate
JIAN Xiaogang, MA Qianli, TANG Jinyao, HU Jibo
2021, 41(1): 5-11. doi: 10.13394/j.cnki.jgszz.2021.1.0001
Abstract:
To further improve the quality of the diamond coatings deposited on diamond-particles-impregnated cemented carbide substrate, a pretreatment method of pre-fixing seeds is proposed. The substrate is attached with titanium powder and then seeded, and finally pre-fixed by microwave. The quality and bon...
Influence of deposition pressure on micron-nanometer transition of diamond film
FAN Bingqing, WANG Chuanxin, XU Yuanzhao, HUANG Kai
2021, 41(1): 12-16. doi: 10.13394/j.cnki.jgszz.2021.1.0002
Abstract:
The effect of argon concentration on the grain size of diamond film at different pressures was studied by hot fibre chemical vapor deposition (CVD) device, and the critical value of the size transition at different pressures was analyzed. The diamond films were analyzed by SEM and Raman spectroscopy...
Effect of tungsten surface laser treatment on adhesion of diamond film
HUANG Yihao, MA Zhibin
2021, 41(1): 17-20. doi: 10.13394/j.cnki.jgszz.2021.1.0003
Abstract:
Diamond film is deposited in CH4/H2 system by microwave plasma chemical vapor deposition (MPCVD). Plasma parameters are measured by emission spectrometer. The internal stress of the grown diamond film is measured by Raman spectrometer. The surface and section morphology of the grown diamond film are...
Comparison of compositions and pressure transmission performances of two kinds of pyrophyllites used in cubic press
JIANG Mingquan, WANG Yipeng, YANG Gongzhang, HE Duanwei
2021, 41(1): 21-26. doi: 10.13394/j.cnki.jgszz.2021.1.0004
Abstract:
Two kinds of pyrophyllites from South Africa and China were analyzed by scanning electron microscope energy dispersive spectroscopy (EDS) and X-ray powder diffraction (XRD). The main chemical compositions and phase compositions of pyrophyllite were obtained. The pressure of synthesis chamber was cal...
A new assembling method to sinter pure PcBN material
DENG Fuming, WANG Hao, SONG Meijiao, WANG Han, YANG Xing, ZHANG Peng
2021, 41(1): 27-31. doi: 10.13394/j.cnki.jgszz.2021.1.0005
Abstract:
A new assembling method was used in pure polycrystalline cubic boron nitride (PcBN) HPHT synthesis chamber. The cBN powder with particle size of 10 μm was used as the raw material. Scanning electron microscope (SEM) and X-ray diffraction (XRD) were used to analyze the microstructure and the phase of...
Microstructure analysis of W-coated diamond brazing with Ni-Cr active filler
SU Shichao, XIAO Bing, WANG Shuyi, WANG Junlin, XIAO Hongzhi
2021, 41(1): 32-37. doi: 10.13394/j.cnki.jgszz.2021.1.0006
Abstract:
Under vacuum condition of 1 030 ℃ for 20 min, W-coated diamond was heated and brazed with Ni-Cr alloy powder. X-ray diffraction (XRD) was used to analyze the phase changes of W-coated diamond before and after heating. Scanning electron microscope (SEM) and energy dispersive spectrometer (EDS) were u...
Comparative study on ultra-thin diamond saw blades made by SLS and FDMS
ZHANG Shaohe, SU Zhou, LIU Leilei, KONG Xiangwang, HE Tao
2021, 41(1): 38-43. doi: 10.13394/j.cnki.jgszz.2021.1.0007
Abstract:
Additive manufacturing for diamond tools is introduced into ultra-thin diamond saw blades, using the fused deposition molding sintering (FDMS). The application of selective laser sintering (SLS) and the FDMS in manufacturing ultra-thin diamond saw blades are introduced in detail. And they are compar...
Wear analysis of CVD diamond tool in micro-milling AA356 aluminum alloy
ZHANG Yabo, BAI Qingshun, HE Xin, QING Lingbo, YUE Songjie, LIU Xin
2021, 41(1): 44-50. doi: 10.13394/j.cnki.jgszz.2021.1.0008
Abstract:
AA356 aluminum alloy has been widely used in aerospace and other fields. However, it is faced with severe tool wear in the process of micro machining and the relevant mechanism is not clear. To reveal the influence mechanism of cutting parameters on the tool wear of CVD diamond tool micro milling AA...
Experimental research on single abrasive grain scratch SiCf/SiC ceramic matrix composite
ZHOU Wenwen, WANG Jianqing, ZHAO Jing, LIU Yao
2021, 41(1): 51-57. doi: 10.13394/j.cnki.jgszz.2021.1.0009
Abstract:
To study the mechanism of SiC fiber (SiCf) reinforced SiC ceramic matrix composite (SiCf/SiC) grinding damage, a test platform was built to carry out single abrasive particle scratch tests. The scratch force was measured and the surface damage form was observed. The influence of shape of the abrasiv...
Power spectrum density characterization of grinding wheel surface in ultrasonic vibration spiral grinding
WANG Qiuyan, LIANG Zhiqiang, BAI Shuowei, WU Yongbo, JIA Shun
2021, 41(1): 58-64. doi: 10.13394/j.cnki.jgszz.2021.1.0010
Abstract:
During the ultrasonic vibration spiral grinding process, the surface topography of the grinding wheel varies complicatedly. To accurately characterize the characters of the grinding wheel surface, a power spectral density (PSD) analysis method was adopted by decomposing the microstructure of the gri...
Experimental analysis of residual stress and hardness of 18CrNiMo7-6 steel in high speed cylindrical grinding
ZHANG Yinxia, YUAN Shaoshuai, WANG Zile, YANG Xin, GAO Wei
2021, 41(1): 65-70. doi: 10.13394/j.cnki.jgszz.2021.1.0011
Abstract:
For 18CrNiMo7-6 carburized steel workpiece, a single factor test was designed studying the wheel speed, the workpiece speed, the feed rate and the abrasive size. X-ray residual stress analyzer and micro hardness tester are used to detect the residual stress and hardness. The results show that high-s...
Reduce grinding energy consumption by modified particle swarm optimization based on dynamic inertia weigh
ZHANG Kun, TIAN Yebing, CONG Jianchen, LIU Yanhou, YAN Ning, LU Tao
2021, 41(1): 71-75. doi: 10.13394/j.cnki.jgszz.2021.1.0012
Abstract:
A three-layer back propagation (BP) neural network was used to establish a grinding energy consumption prediction model. 125 single-factor experiments were designed with the grinding wheel linear velocity, feed rate and grinding depth of cut as the influencing factors. 75 sets of experimental data w...
Defect detection method of abrasive block based on machine vision
JIA Po, TIAN Jianyan, YANG Yingbo, PENG Hongli, YANG Shengqiang
2021, 41(1): 76-82. doi: 10.13394/j.cnki.jgszz.2021.1.0013
Abstract:
To detect the roundness and the black core defects of sintered spherical abrasive block, a defect detection method based on machine vision was proposed. Firstly, an image acquisition system of the abrasive block was built by using single chip microcomputer, stepping motor, sampling disc, digital mic...
Effect of 1, 2, 4 -triazole and benzotriazole on chemical-mechanical polishing of 316L stainless steel
WANG Hao, CHEN Guomei, NI Zifeng, QIAN Shanhua, BIAN Da, ZHAO Yongwu
2021, 41(1): 83-88. doi: 10.13394/j.cnki.jgszz.2021.1.0014
Abstract:
Experiments of chemical mechanical polishing 316L stainless steel were conducted under acid condition, with 1, 2, 4-triazole (TAZ) or benzotriazole (BTA) as the corrosion inhibitor, to study the effect of TAZ and BTA and the mechanisms. The polished surfaces of 316L stainless steel were observed by ...
Simulation study on influence mechanism of abrasive radius on diamond grinding
ZHANG Tongqi, YUE Xiaobin, LEI Dajiang, YANG Ning
2021, 41(1): 89-94. doi: 10.13394/j.cnki.jgszz.2021.1.0015
Abstract:
To analyze the influence mechanism of diamond grain size change on the grinding quality of diamond material, a molecular dynamics method was used to establish the grinding model of spherical rigid diamond grain grinding diamond workpiece, and the grinding force variation law, the stress and the phas...
Experimental study on selection of PDC cutting teeth based on thermal performance analysis
WANG Chuanliu
2021, 41(1): 95-100. doi: 10.13394/j.cnki.jgszz.2021.1.0016
Abstract:
To improve the reliability of the PDC cutting teeth selection, from the perspective of thermal performance, the PDC cutting teeth of different manufacturers were analyzed by the laser Raman spectroscopy at room temperature and high temperature and the thermogravimetry analysis. Combined with high te...
Operation of Chinese superhard industry in 2019
SUN Zhaoda, LI Zhihong, ZHAO Xinghao, LI Lijuan, ZHANG Beibei
2021, 41(1): 101-104. doi: 10.13394/j.cnki.jgszz.2021.1.0018
Abstract:
The development of Chinese superhard material industry in 2019 was analyzed with the collected statistics of the industry. It is believed that the industry is in its limited development, whose main economic indicators all turn down, especially the total profit decreasing as much as 34%. However, the...