The Theoretical Analysis and Application of the Ultra-Precision Machining the End Surface of Stop Valve’s Valve Flap with the Diamond Facing Tool

2013 ◽  
Vol 652-654 ◽  
pp. 2113-2118
Author(s):  
Ji Hua Zhu ◽  
Xue Xia Liu ◽  
Xue Min Tian ◽  
Jian Fei Chen
Keyword(s):  
Stainless Steel ◽  
Theoretical Analysis ◽  
Cutting Parameters ◽  
Precision Machining ◽  
Grinding Wheel ◽  
Quality Requirements ◽  
Machinery Factory ◽  
New Process ◽  
The Face ◽  
Ultra Precision

A new process was proposed. The disadvantage of of using brown alumina grinding wheel to grinding and lapping surface was studied in the analysis. The diamond facing tool was designed and manufactured with the solution of the key technique of the critical technical of single crystal diamond’s material selecting, grinding, welding. The face cutting parameters: “V”, “f” and “ap” were measured by experiment and academic analysis. Tt can fully meet the quality requirements of stainless steel valve flap’s surface used by one valve machinery factory; meanwhile the productivity was increased by a factor of 15, with overcoming the disadvatange of grinding and lapping valve flap’s surface.

Study on the Effect of Rake Angle on Cutting Forces in Ultra-Precision Machining

2012 ◽  
Vol 516 ◽  
pp. 551-556
Author(s):  
Thanh Hung Duong ◽  
Kim Huyn Chul ◽  
Lee Dong Yoon
Keyword(s):  
Theoretical Analysis ◽  
Cutting Force ◽  
Electroless Nickel ◽  
Cutting Parameters ◽  
Rake Angle ◽  
Precision Machining ◽  
Reported Study ◽  
Ultra Precision ◽  
The Relationship ◽  
Cutting Speeds

In recent years, there have been many studies concerning the effect of cutting parameters and tool parameters on the ultra precision machining of electroless nickel. However, there is no known reported study on the relationship between the cutting force and tool rake angle in ultra precision machining of electroless nickel. The objective of this study is to compare and investigate the cutting force with various rake angles for micro machining electroless nickel work pieces by theoretical analysis and experiment. Diamond tools with rake angles of-10o, 0o and 10o were used in the experiment. According to theoretical analysis, the tool with a 10o rake angle induces the smallest cutting force. However, the experiment showed that the tool with zero rake angle always gave us the smallest cutting force for all cutting speeds, cutting depths and pattern pitches.

Research for Use Diamond Knife to Ultra-Precision Boring Gauging Pump’s Boring

2011 ◽  
Vol 287-290 ◽  
pp. 162-168
Author(s):  
Jian Ru Shi ◽  
Shao Jing Pei ◽  
Jiang Hong Cui ◽  
Jian Fei Chen ◽  
Li Wang
Keyword(s):  
Stainless Steel ◽  
Steel Plate ◽  
Internal Surface ◽  
Synthetic Fiber ◽  
Grinding Wheel ◽  
Gear Pump ◽  
Stainless Steel Plate ◽  
New Process ◽  
Ultra Precision ◽  
Shaped Hole

In this thesis, the new process will proposed which using diamond profile boring to boring 8-shaped hole in intermediate stainless steel plate of synthetic fiber gear pump. Academic analysis was made for gear pump’s flow rate, and analysis was made for the disadvantage of using brown alumina grinding wheel to grinding 8-shaped hole in intermediate plate’s internal surface. The critical technical of single crystal diamond’s material selecting, grinding, welding were solved, and diamond profile boring was designed and manufactured. We confirmed the boring parameters: “”, “” and “” through experiment and academic analysis. The qualified intermediate stainless steel plate with 8-shaped hole was using in one spinning factory; we conquered the grinding hole’s disadvantage and productivity is increasing 15 times.

Experiment Study on ELID Grinding of TN85 Cermets

2011 ◽  
Vol 175 ◽  
pp. 131-135
Author(s):  
Fu Qiang Tong ◽  
Fei Hu Zhang ◽  
Dian Rong Luan
Keyword(s):  
Metal Matrix ◽  
High Hardness ◽  
Diamond Powder ◽  
Diamond Wheel ◽  
Precision Machining ◽  
Grinding Wheel ◽  
Powder Particle Size ◽  
Matrix Composites ◽  
Elid Grinding ◽  
Ultra Precision

TN85 cermets is one kind of particle reinforced metal matrix composites, which is high hardness, good wear resistance, and bring great difficulties in processing, so it is necessary to study the processing performance. During the test on ELID grinding TN85 cermets, it is found that plastic removal is the main ways during grinding TN85 cermets materials. The powder particle size of W2.5 diamond wheel is successfully used in full removal of TN85 cermets plastic, the surface roughness value of rms: 16.81nm and Ra: 12.52nm. The results showed that: ELID grinding wheel with diamond powder technology can be used in ultra-precision machining TN85 cermets.

Binderless-cBN as Cutting Material for Ultra-Precision Machining of Stainless Steel

2014 ◽  
Vol 1018 ◽  
pp. 107-114 ◽  
Author(s):  
Julian Polte ◽  
Mitchel Polte ◽  
David Lorenz ◽  
Dirk Oberschmidt ◽  
Heinz Sturm ◽  
...  
Keyword(s):  
Stainless Steel ◽  
Surface Quality ◽  
Wear Mechanisms ◽  
Machine Tools ◽  
Experimental Studies ◽  
High Potential ◽  
Precision Machining ◽  
Workpiece Material ◽  
Ultra Precision ◽  
Direct Cutting

The ultra–precision cutting of steel materials is possible but needs modifications of machine tools or the workpiece material. One approach of actual research is the development of cutting materials that gives the opportunity for direct cutting of surfaces with ultra–precision quality. Binderless–cBN is here one of the most promising materials. The paper shows results of experimental studies with binderless–cBN as cutting material while turning stainless steel. Various investigations were carried out to determine the wear mechanisms. Furthermore, measurements are shown regarding the surface quality. The achieved results show the high potential ofbinderless–cBN as cutting material for the machining of steel.

scholarly journals Influence of the cutting parameters on the selected machinability indicators in the milling of steel EZ6NCT25

Mechanik ◽  
2018 ◽  
Vol 91 (8-9) ◽  
pp. 772-774
Author(s):  
Agnieszka Skoczylas ◽  
Kazimierz Zaleski
Keyword(s):  
Surface Roughness ◽  
Stainless Steel ◽  
Turbine Blades ◽  
Experimental Tests ◽  
Cutting Parameters ◽  
Face Milling ◽  
Steel Grade ◽  
Technological Parameters ◽  
The Face ◽  
D 12

The paper reports results of an investigation of the cutting torque and surface roughness in the face milling of EZ6NCT25 steel. Classified as stainless steel, EZ6NCT25 is effectively used in the aviation and shipbuilding industries. This steel grade is used for producing elements such as turbine blades and combustion chamber assemblies. Experimental tests were performed with the use of full-carbide monolithic tools with the diameter of d = 12 mm. The tests were conducted at variable technological parameters. It has been observed that that cutting torque and amplitude cutting torque depend on machining conditions, and also, although to a lesser extent the surface roughness.

A Study of Fine Machining Using Instantaneous Tiny Grinding Wheel Based on Electrorheological Effect

2007 ◽  
Author(s):  
Jianhua Feng ◽  
Qiusheng Yan ◽  
Jiabin Lu ◽  
Weiqiang Gao
Keyword(s):  
Stainless Steel ◽  
Material Removal ◽  
Graphite Electrode ◽  
Grinding Wheel ◽  
Stainless Steel Electrode ◽  
Steel Electrode ◽  
Ultra Precision ◽  
Quenched Steel ◽  
Er Fluids ◽  
Er Fluid

The machining effect of different materials electrodes (quenched steel electrode, stainless steel electrode, brass electrode and graphite electrode) and different electrorheological (ER) fluids on the glass was investigated by fine machining experiments using the ER effect instantaneous tiny grinding wheel. Quenched steel electrode and stainless steel electrode can cause bigger and deeper machining region and uniform material removal, while brass electrode and graphite electrode can lead to lower material removal efficiency and nonuniform material removal. The machining trace of zeolite ER fluid is more integrated and deeper apparently than that of SiO2 ER fluid. The processing mechanisms of ER fluid-assisted ultra-precision polishing are analyzed.

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