Research on ELID Grinding Performance of GCr15 Steel

2013 ◽  
Vol 797 ◽  
pp. 740-745
Author(s):  
Jia Liang Guan ◽  
Xin Qiang Ma ◽  
Xiao Hui Zhang ◽  
Li Li Zhu ◽  
Zhi Wei Wang
Keyword(s):  
Surface Roughness ◽  
Bearing Steel ◽  
Precision Grinding ◽  
Machined Surface ◽  
Elid Grinding ◽  
Peripheral Velocity ◽  
Gcr15 Bearing Steel ◽  
Machined Surface Roughness ◽  
Ultra Precision ◽  
Main Factors

The electrolytic in-process dressing (ELID) grinding technology was adopted for ultra-precision grinding experiments of GCr15 bearing steel. The experiments show that: grinding depth, electrolysis gap and wheel peripheral velocity are the main factors to affect the surface quality. With the electrolysis gap of 0.5mm, the grinding depth of 0.1μm, and the wheel peripheral velocity of 18m/s, the grinding effect can achieve optimal and the machined surface roughness can obtain Ra0.006μm.

Research on ELID Ultra-Precision Grinding Performance of SiCp/Al Composites

2014 ◽  
Vol 614 ◽  
pp. 75-78
Author(s):  
Jia Liang Guan ◽  
Lei Zhu ◽  
Ling Chen ◽  
Xin Qiang Ma ◽  
Xiao Hui Zhang
Keyword(s):  
Surface Roughness ◽  
Cast Iron ◽  
Rotation Speed ◽  
Grinding Wheel ◽  
Feed Speed ◽  
Precision Grinding ◽  
Machined Surface ◽  
Elid Grinding ◽  
Machined Surface Roughness ◽  
Ultra Precision

The electrolytic in-process dressing (ELID) grinding technology was adopted for ultra-precision grinding experiments of SiCp/Al composites; the machined surface roughness can obtain Ra0.030μm. The experiments show that: with the grinding wheel rotation speed of 1500r/min, the grinding depth of 0.1μm, and feed speed of 2m/min and using W5 cast iron bonded diamond grinding wheel, the grinding effect can achieve optimal.

The Research of ELID Grinding Effect and Surface Quality on Carbonized Cold-Rolled Steel

2012 ◽  
Vol 229-231 ◽  
pp. 542-546
Author(s):  
J.L. Guan ◽  
Li Li Zhu ◽  
H.W. Lu ◽  
Zhi Wei Wang
Keyword(s):  
Surface Roughness ◽  
Surface Quality ◽  
Grinding Wheel ◽  
Rolled Steel ◽  
Precision Grinding ◽  
Cold Rolled Steel ◽  
Elid Grinding ◽  
Peripheral Velocity ◽  
Ultra Precision ◽  
Cold Rolled

In this document, the electrolytic in-process dressing ( ELID ) grinding technique is used for ultra-precision processing experimental research on the carbonized cold-rolled steel (HRC60～80).A surface roughness of Ra6～8nm was obtained after ELID precision grinding. The results proved that adopting micro grain size (W1.5～W36) and high hardness cast iron based diamond grinding wheel, increasing the wheel peripheral velocity (18～20m/s) and reducing grinding depth can effectively improve surface quality and bring the surface roughness down. The wheel peripheral velocity, grinding depth as well as grinding fluid are the main factors during ultra-precision grinding.

Research on ELID Grinding Efficient Surface Forming Mechanism of SiCp/Al Composites

2014 ◽  
Vol 1027 ◽  
pp. 107-110
Author(s):  
Jia Liang Guan ◽  
Lei Zhu ◽  
Ling Chen ◽  
Xin Qiang Ma ◽  
Xiao Hui Zhang
Keyword(s):  
Surface Roughness ◽  
Surface Defects ◽  
Volume Fraction ◽  
Removal Mechanism ◽  
Precision Grinding ◽  
Machined Surface ◽  
Forming Mechanism ◽  
Elid Grinding ◽  
Machined Surface Roughness

The electrolytic in-process dressing (ELID) grinding technology was adopted for precision grinding experiments of volume fraction of 40% of SiCp/Al composites, obtaining the machined surface roughness of Ra0.030μm. Studying the forming mechanism of processed surface, analyzing several typical grinding surface defects, summarizing the grinding characteristics and removal mechanism of SiCp/Al composites.

Analysis of Cutting Parameters Influence on the Machined Surface Roughness Obtained by Turning of a Heat Treated Bearing Steel

2015 ◽  
Vol 809-810 ◽  
pp. 195-200
Author(s):  
Constatin Rotariu ◽  
Sevasti Mitsi ◽  
Dragos Paraschiv ◽  
Octavian Lupescu ◽  
Sergiu Lungu ◽  
...  
Keyword(s):  
Heat Treatment ◽  
Surface Roughness ◽  
Hard Turning ◽  
Cutting Parameters ◽  
Bearing Steel ◽  
Machined Surface ◽  
Heat Treated ◽  
Machined Surface Roughness ◽  
Bearing Rings ◽  
Quality Surface

In this paper we analyze the influence of cutting parameters on the surface quality, surface roughness respectively, processed by turning when heat treated bearing steel, also called hard turning, and processing by turning of bearing steel without heat treatment. We set parameters of the cutting regime influencing the achievement of roughness surfaces which must be within the predetermined requirements if bearing rings exceeding 500 mm in diameter. This analysis will be done by statistical methods using the software Minitab 14.

The Influence of Cutting Conditions on Surface Roughness during Steel 100Cr6 Grinding

2017 ◽  
Vol 261 ◽  
pp. 215-220
Author(s):  
Martin Novák ◽  
Natasa Naprstkova
Keyword(s):  
Surface Roughness ◽  
Bearing Steel ◽  
Cutting Conditions ◽  
Machining Process ◽  
Machined Surface ◽  
Workpiece Surface ◽  
Bearing Steels ◽  
Technology Products ◽  
Machined Surface Roughness

Machining of tool steels is often an important used technology. Products made from these materials are often used in mechanical engineering, and quality of workpiece surface roughness after machining respective grinding is one of the important parameters that to us speak about the quality of the machining process. The paper deals with the influence of cutting conditions when grinding bearing steel 100Cr (EN ISO) on machined surface roughness. This steel belongs to a group of bearing steels.

Cutting Force Experiment and Simulation by Hard Turning GCr15 Bearing Steel with High Speed Considering Cutting Edge Preparation

2006 ◽  
Vol 532-533 ◽  
pp. 845-848
Author(s):  
Yu Wang ◽  
Fu Gang Yan ◽  
Jing Shu Hu ◽  
Tao Chen ◽  
Zhen Chang ◽  
...  
Keyword(s):  
Surface Roughness ◽  
Finite Element ◽  
Cutting Forces ◽  
High Speed ◽  
Hard Turning ◽  
Cutting Speed ◽  
Bearing Steel ◽  
Machined Surface ◽  
Element Analysis ◽  
Gcr15 Bearing Steel

In this study, hard turning GCr15 bearing steel with high cutting speed is experimental investigated the influence of the CB7015WH insert with chamfer edge and Safe-Lock and the CB7015 insert with a combination of hone radius and a chamfer edge on cutting forces and surface roughness of machined surface. Experimental results show that the cutting forces of the chamfer edge and Safe-Lock is smaller than that of the combination of hone radius and a chamfer edge. Moreover, surface roughness of machined surface with the CB7015WH insert is better. A coupled thermo-mechanical 2D finite element model with general finite element analysis software Deform 2D.8.1 is developed for the influence of two kinds of inserts on cutting forces and effective stress. The simulation results are compared with experimental data and found to be in good agreement.

scholarly journals Study on Surface Roughness of Gcr15 Machined by Micro-Texture PCBN Tools

Machines ◽  
2018 ◽  
Vol 6 (3) ◽  
pp. 42 ◽  
Author(s):  
Chen Pan ◽  
Qinghua Li ◽  
Kaixing Hu ◽  
Yuxin Jiao ◽  
Yumei Song
Keyword(s):  
Surface Roughness ◽  
Cubic Boron Nitride ◽  
Bearing Steel ◽  
Cutting Edge ◽  
Machined Surface ◽  
Machined Surface Roughness ◽  
Influence Degree ◽  
Pcbn Tools ◽  
Cutting Speeds

This paper applies micro textures to the rake face of PCBN (Polycrystalline Cubic Boron Nitride) tools, including three types of micro textures that are microgroove textures vertical to the cutting edge, microgroove textures parallel to the cutting edge, and microhole textures. In this paper, the effects of different cutting speeds on the surface quality of hardened bearing steel GCr15 by dry turning with non-texture PCBN tools and micro-texture PCBN tools are studied, and the surface roughness values obtained by different micro textures were compared and analyzed. The results showed that, compared to that of non-texture tools, the influence degree of the micro-texture tools on the machined surface roughness was different. The microhole texture and vertical microgroove texture were able to effectively reduce the surface roughness of the workpiece, and microhole texture had the best effective influence on surface roughness, but the parallel microgroove texture increased surface roughness. The influence of cutting speeds on surface roughness was different due to different types of micro textures. The influence of micro textures on surface roughness has huge potential for tool applications.

Influence of Tool Shape on Cutting Characteristics in Ultra-Precision Cutting of Al-Mg Alloys

2016 ◽  
Vol 1136 ◽  
pp. 178-183 ◽  
Author(s):  
Tomohiro Iida ◽  
Yukio Maeda ◽  
Daisuke Hirase ◽  
Tatsuo Motoyoshi ◽  
Hideaki Tanaka ◽  
...  
Keyword(s):  
Surface Roughness ◽  
Aluminum Alloys ◽  
Surface Defects ◽  
Mg Alloys ◽  
Machined Surface ◽  
Tool Shape ◽  
Machined Surface Roughness ◽  
Ultra Precision ◽  
Geometric Surface ◽  
Al Mg Alloys

In this study, we investigated ultra-precision cutting technology of aluminum alloys for polygon mirrors made of Al-Mg Alloys. It is necessary to improve the geometric surface roughness achieved in the mirror cutting of Al-Mg alloys and remove tear-out marks and scratch marks that occur during the cutting process. Therefore, we investigated the cutting edge shape using 2 types of straight diamond tools and 2 types of round tools to decrease the surface defects in the ultra-precision cutting of Al-Mg alloys. As a result, a double-facet tool can achieved a good machined surface roughness and reduce the cutting force and the scratch marks compared with other tools.

Research on Cylindrical Precision Machining Adopting ELID Grinding Technology

2014 ◽  
Vol 1027 ◽  
pp. 97-100 ◽  
Author(s):  
Jia Liang Guan ◽  
Xiao Hui Zhang ◽  
Ling Chen ◽  
Xin Qiang Ma
Keyword(s):  
Wheel Speed ◽  
Process Equipment ◽  
Precision Machining ◽  
Precision Grinding ◽  
Machined Surface ◽  
Elid Grinding ◽  
Optimization Of Process Parameters ◽  
Ultra Precision ◽  
Efficient Processing ◽  
Mirror Grinding

In order to explore the new way to precision machining of the cylindrical, ELID precision mirror grinding technology are employed to precision ultra-precision grinding experiments. Given ELID precision mirror grinding technology has effectively solved the basis of many of the typical flat-precision machining difficult materials and efficient processing, through the conversion process equipment tools, and optimization of process parameters, obtained when the wheel speed in 16 ~ 20 m / s, when the grinding depth 10μm, cylindrical grinding state is best, which could obtain Ra0.025μm surface roughness of the machined surface.

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