金刚石与磨料磨具工程

Research on grinding force of titanium alloy TC17 with microcrystalline alumina grinding wheel

CAO Ke, DONG Zhigang, KANG Renke, ZHU Xianglong, LIU Jinting

2016, 36(5): 1-7,14. doi: 10.13394/j.cnki.jgszz.2016.5.0001

Abstract(473)

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Abstract:
Grinding experiments were conducted on titanium alloy TC17 with microcrystalline alumina and white alumina grinding wheels separately to study their grinding performance,such as surface quality and grinding force.The results show that surface ground by microcrystalline alumina has better quality,wit...

Microwave method coated nanodiamond and its application progress in catalytic area

ZHANG Yan, ZANG Jianbing, TIAN Pengfei, XU Hanqing, HAN Chan, WANG Yanhui

2016, 36(5): 8-14. doi: 10.13394/j.cnki.jgszz.2016.5.0002

Abstract(429)

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Abstract:
Nanodiamond(ND)can be used as catalyst carrier in catalytic area because of its excellent thermal conductivity,thermal stability and specific area.This paper reviews the application of microwave coated ND in fuel cells,focusing on the preparation of platinum catalyst which is carried by TiO₂/ND(GND,...

Preparation of slurry for photocatalytic assisted chemical mechanical polishing CVD diamond

YUAN Zewei, DU Haiyang, HE Yan, ZHANG Yue

2016, 36(5): 15-20,31. doi: 10.13394/j.cnki.jgszz.2016.5.0003

Abstract(662)

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Abstract:
CVD diamond has been widely applied in various fields.Despite several existing processing methods,many problems,such as low efficiency and poor precision,still arise in actual applications.To avoid the problems of the existing methods for polishing diamond,this study prepares a new type of slurry fo...

Chemical mechanical polishing process parameters of 304 stainless steel

LI Qing, CHEN Shaokun, PENG Yanan, QIN Hongquan, FU Sufang, SU Jianxiu

2016, 36(5): 21-25. doi: 10.13394/j.cnki.jgszz.2016.5.0004

Abstract(755)

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Abstract:
When chemical-mechanically polishing 304 stainless steel,the effects of polishing pressure,polishing slurry flow rate,polishing speed and polishing time on the material removal rate and surface roughness are studied for better performance,lower cost and higher efficiency.Experimental results show th...

Creep-feed grinding of nickel-based superalloy GH4169 spline using micro-crystalline alumina wheels

HE Jian, YU Jie, DAI Chenwei, DING Wenfeng

2016, 36(5): 26-31. doi: 10.13394/j.cnki.jgszz.2016.5.0005

Abstract(441)

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Abstract:
Nickel-based superalloy GH4169,as a typical difficult-to-cut material,has been widely used in aero-engine components.The micro-crystalline alumina wheel is becoming popular in grinding aeroengine materials due to its excellent performance of self-sharpening.In order to find out the most suitable whe...

Surface topography of metal bonded arc grinding wheel after electrical discharge dressing

LIU Zhongde, ZHANG Feihu, WANG Kai, LI Chen, MA Zhaokai

2016, 36(5): 32-37,41. doi: 10.13394/j.cnki.jgszz.2016.5.0006

Abstract(465)

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Abstract:
Due to the efficient process property,metal bonded diamond arc grinding wheel has been employed in the process of the large aperture SiC china gradually. However,the amount of consumption limits its application.To eliminate consumption of the grinding wheel,the paper proposes electrodischarge machin...

Fabrication and microstructure analysis of Ti₃AlC₂-CBN composites

LIANG Baoyan, ZHANG Wangxi, FENG Yanxiang, MU Yunchao

2016, 36(5): 38-41. doi: 10.13394/j.cnki.jgszz.2016.5.0007

Abstract(429)

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Abstract:
Ti₃AlC₂-CBN composites are fabricated by spark plasma sintering using Ti₃AlC₂ and CBN powders as raw materials.Effect of CBN size and mass fraction on the phase composition and microstructure of the composites are studied.The results show that the main phases of the sample containing 10wt% CBN are T...

Influence of superfinishing parameters on residual stress of bearing raceway

GE Peiqi, BI Wenbo, ZHENG Chuandong

2016, 36(5): 42-45. doi: 10.13394/j.cnki.jgszz.2016.5.0008

Abstract(557)

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Abstract:
The experiments for 7008 Cbearing inner ring superfinishing are carried out with different processing parameters.An X-ray stress analyzer is applied to measure circumferential and axial residual stress at the bottom of the raceway of 7008 Cbearing inner ring.The results show that the residual stress...

Modeling and simulation of surface form accuracy for aspheric SiC mirror based on reciprocating grinding

ZHANG Feihu, MA Zhaokai, LI Chen, RAO Xiaoshuang

2016, 36(5): 46-49,54. doi: 10.13394/j.cnki.jgszz.2016.5.0009

Abstract(419)

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Abstract:
To study the performance of grinding aspheric SiC mirror with arc-shaped grinding wheel,the model of residual height of aspheric silicon carbide mirror is established based on the reciprocating grinding,and the prediction model of surface form accuracy is simulated and analyzed through the relations...

Wear mechanism of the PCBN cutting tools in high speed cutting of hardened bearing steel

DENG Fuming, DENG Wenli, YANG Xuefeng, ZHANG Pan, LIU Ruiping, MA Xiangdong

2016, 36(5): 50-54. doi: 10.13394/j.cnki.jgszz.2016.5.0010

Abstract(486)

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Abstract:
The BZN9000 compacts from D.I.Company in the USA is selected and its high speed cutting experiments are carried out on the GCr15 hardened bearing steel ring by using the CA6140 Alathe.The morphologies and the element contents of rake and flank face of the PCBN tool are observed and analyzed by means...

Tensile performance and fracture analysis of brazed diamond wire saw

ZHANG Ziyu, XIAO Bing, WANG Bo, WANG Pengfei

2016, 36(5): 55-59. doi: 10.13394/j.cnki.jgszz.2016.5.0011

Abstract(515)

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Abstract:
Diamond grits are brazed on the surface of 0Cr18Ni9 stainless steel wire by using Cu-Sn-Ti pre-alloyed powder as interlayer materials,thus producing diamond wire saw with a diameter of 0.8 mm.Mechanical properties of steel wire and wire saws are obtained by tensile tests,and the crystalline structur...

Transverse vibration analysis of diamond saw blade at different speeds

ZHAO Min, LI Xu

2016, 36(5): 60-63. doi: 10.13394/j.cnki.jgszz.2016.5.0012

Abstract(435)

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Abstract:
Diamond circular saw blade has become the most important cutting tool during the stone machining and has been used widely in cutting stones.Because the ratio of diameter to thickness is usually larger than 200,the bending ability of blades is limited.Diamond saw blade could also cause vibration in h...

Study on the wheel performance in high feed rate dry grinding rail material

XIE Guizhi, DONG Jiong, SHANG Zhentao, MIAO Tianying, JIN Tan

2016, 36(5): 64-68. doi: 10.13394/j.cnki.jgszz.2016.5.0013

Abstract(418)

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Abstract:
Rail grinding is the main technology to maintain the rail.Compared with normal grinding,rail grinding requires special performance on the grinding wheel.Based on the working condition of rail grinding vehicle,we set a group of parameters and test different grinding wheels to select one to meet the r...

Study on three-dimensional ultrasonic-aided grinding force

MA Xinyi

2016, 36(5): 69-74,78. doi: 10.13394/j.cnki.jgszz.2016.5.0014

Abstract(465)

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Abstract:
Study on three-dimensional ultrasonic assisted grinding force has been an empty field in ultrasonic machining area.The three-dimensional ultrasonic assisted grinding force is analyzed by using the macro-mechanics theory,and its mathematics model is established.The grinding force variations at differ...

Bending strength of porous metal-bond diamond wheel segment

BAI Yongming, SHANG Jiaming

2016, 36(5): 75-78. doi: 10.13394/j.cnki.jgszz.2016.5.0015

Abstract(489)

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Abstract:
To balance the intensity and porosity of porous metal-bond,different mass fractions of pore formers and brazing fillers,as well as diamonds with different sizes and contents,are made into metalbond segements to test their bending strength.The results show that pore formers will dent the bending stre...

Research progress on binderless PCD and PCBN materials

ZHANG Taiquan

2016, 36(5): 79-83. doi: 10.13394/j.cnki.jgszz.2016.5.0016

Abstract(450)

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Abstract:
The preparation method,sintering mechanisms,methods for improving their sintering behavior,and their properties for binderless polycrystalline cubic boron nitride(PCBN)and polycrystalline diamond(PCD)materials have been summarized and discussed.The dense binderless PCD and PCBN materials can be succ...

2016 Vol. 36, No. 5

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