Research on Surface Roughness of Ultrasonic Polishing without Abrasive Based on Orthogonal Experiments

2009 ◽  
Vol 416 ◽  
pp. 133-136
Author(s):  
Jian Jun Jiang ◽  
Jian Xin Zheng ◽  
Chuan Shao Liu
Keyword(s):  
Surface Roughness ◽  
Feed Rate ◽  
Lower Surface ◽  
Orthogonal Test ◽  
Test Method ◽  
Experimental Results ◽  
Polished Surface ◽  
Orthogonal Experiments ◽  
Orthogonal Test Method ◽  
Conventional Rolling

Experiments of ultrasonic polishing the 45# steel shaft without abrasive are carried out by using orthogonal test method to study the polished surface roughness, and experimental results are analyzed with range method. The influence of polishing parameters on the polished surface roughness could be arranged as follows: feed rate, power of generator, preload pressure and radius of the tool head, in which the feed rate brings the most remarkable influence on the polished surface roughness. The surface roughness value reduces at first and then increases when the radius of tool head, preload pressure and power of the generator increase. The surface roughness value increases with the feed rate. Comparative experimental results of ultrasonic polishing without abrasive and the conventional rolling indicate that lower surface roughness value may be obtained by ultrasonic polishing without abrasive.

Orthogonal Test of Characteristics of Complex Cememting Material of FGD Gypsum-Fly Ash

2011 ◽  
Vol 250-253 ◽  
pp. 460-463
Author(s):  
Yi Zhang ◽  
Xin Tang Wang ◽  
Ming Zhou ◽  
Wan Zhen Wang
Keyword(s):  
Fly Ash ◽  
Orthogonal Test ◽  
Test Method ◽  
Experimental Results ◽  
Mineral Admixtures ◽  
Fgd Gypsum ◽  
Slag Powder ◽  
Mix Proportion ◽  
Orthogonal Test Method ◽  
Cementing Material

Orthogonal test method is used to study the effect of the mineral admixtures on the performance of FGD gypsum-fly ash complex cementing material. On the basic experiment, the effect of the traditional alkali and salt admixtures added to the complex cementitious system is discussed, the factors effecting on performance of the FGD gypsum were analyzed. Based on the experimental results, the best mix proportion was determined. Finally, the basic performance of complex cementitious material was tested. The experimental results show that the performance of FGD gypsum which is activated through adding the compound admixtures was similar with the ordinary interior wall materials. The strength and water resistance of FGD gypsum complex cementing material can be greatly enhanced by adding cement, quicklime and slag powder, and effect of cement is largest, and slag smallest. The performance of the gypsum complex cementing material also can be improved after incorporation of a few of chemical admixture on the basis of adding mineral activators.

A Processing Technical Analysis for the Characteristics of Forces and Surface Roughness in Micro-Scale Milling

2012 ◽  
Vol 565 ◽  
pp. 535-540
Author(s):  
Ya Dong Gong ◽  
Jin Feng Zhang ◽  
Jun Cheng ◽  
Yong Zhen Zhang
Keyword(s):  
Surface Roughness ◽  
Experimental Analysis ◽  
End Milling ◽  
Orthogonal Test ◽  
Spindle Speed ◽  
Test Method ◽  
Micro Milling ◽  
Micro End Milling ◽  
Orthogonal Test Method ◽  
Milling Forces

The spindle speed, federate and axial depth of micro-milling are found to have a significant influence on the micro milling forces and surface roughness through experimental analysis of the micro-end milling process. To investigate these issues, an orthogonal test method is developed in this present work. Firstly, experimental analysis for the micro-milling forces and surface roughness was performed based on the micro-end-milling experiments of AL5083-O by using 0.396mm diameter micro-end mills with a miniaturized machine tool. Then, the datum of experiments were classified and analyzed by the orthogonal test method. Finally, the laws of micro-milling forces and surface roughness with changing process parameters were found and summarized. The spindle speed has a significant effect on the micro milling forces and surface roughness. In a word, the results of this work were useful to understand the characteristics of machining process and improve the machining performances.

Effect of ultrasonic melt treatment on the tribological behavior of 7075 aluminum alloy

2020 ◽  
Vol 62 (12) ◽  
pp. 1243-1250
Author(s):  
Fahri Vatansever ◽  
Alpay Tamer Erturk ◽  
Erol Feyzullahoglu
Keyword(s):  
Surface Roughness ◽  
Aluminum Alloy ◽  
Tribological Properties ◽  
Lower Surface ◽  
Test Method ◽  
Ring Test ◽  
7075 Aluminum Alloy ◽  
Melt Treatment ◽  
Ultrasonic Melt Treatment ◽  
Worn Surfaces

Abstract In this study, the tribological properties of 7075 aluminum alloy produced by ultrasonic melt treatment (UST) are investigated. Tribological properties of untreated and ultrasonically treated samples under dry and lubricated sliding conditions were analyzed experimentally by the block on ring test method. Worn surfaces of untreated and ultrasonically treated samples were scanned by 3D optical profilometer and analyzed to search out wear characteristics in the material. Furthermore, microstructural examinations were conducted to investigate the beneficial effects of UST on the microstructural properties of the alloy using optical and scanning electron microscopy. According to the results obtained, UST refines the α-Al phase of the alloy and disperses precipitates to grain boundaries more uniformly. Also, hardness and density of the alloy increased through the effect of UST. Due to these favorable effects, the wear resistance of the alloy increased and the worn surfaces of the ultrasonically treated samples exhibited lower surface roughness according to 3D surface roughness measurements.

Numerical simulation and application of entrainment dust collector for fully mechanized mining support based on orthogonal test method

2021 ◽  
Vol 380 ◽  
pp. 553-566
Author(s):  
Wenjing Yin ◽  
Gang Zhou ◽  
Dong Liu ◽  
Qunzhi Meng ◽  
Qian Zhang ◽  
...  
Keyword(s):  
Numerical Simulation ◽  
Orthogonal Test ◽  
Test Method ◽  
Dust Collector ◽  
Orthogonal Test Method

Influence of Processing Parameters on Surface Roughness in Micro Mill-Grinding Aluminium Alloy 6061

2014 ◽  
Vol 1017 ◽  
pp. 495-499
Author(s):  
Ya Dong Gong ◽  
Chao Wang ◽  
Jun Cheng ◽  
Xue Long Wen ◽  
Guo Qiang Yin
Keyword(s):  
Surface Roughness ◽  
Aluminium Alloy ◽  
Feed Rate ◽  
Processing Parameters ◽  
Micro Milling ◽  
Processing Conditions ◽  
Cutting Depth ◽  
Orthogonal Experiments ◽  
Alloy 6061 ◽  
Better Than

Orthogonal experiments of micro mill-grinding were conducted on aluminium alloy 6061. Electroplated CBN compound tools were used in machining. Surface topography and roughness of the machined workpieces were measured and analyzed. Influence rules of radial cutting depth,feed rate and spindle speed on surface roughness in micro mill-grinding were studied. The results were compared with those in micro milling. It shows that the influence rules of processing parameters on surface roughness in micro mill-grinding are approximately same with those in micro milling. And in the same processing conditions, the surface roughness of micro mill-grinding is better than that of micro milling. The minimum value of surface roughness Ra of micro mill-grinding is 0.609μm in the experiments.

A Novel Tape and Diamond Process Developed for Polishing Hard Substrates

2015 ◽  
Vol 656-657 ◽  
pp. 416-421
Author(s):  
Rong Hwei Yeh ◽  
T.M. Chao ◽  
Cheng Kuo Lee ◽  
A.H. Tan
Keyword(s):  
Surface Roughness ◽  
Removal Rate ◽  
Lower Surface ◽  
Polished Surface ◽  
Closed Chamber ◽  
Glass Substrates ◽  
Nominal Size ◽  
Hard Glass ◽  
High Removal Rate ◽  
Diamond Abrasive

A nanoscale polish process with improved desired characteristics of low roughness and low scratch counts has been developed using a novel polish tape and diamond abrasive on hard glass substrates. For an improved polishing performance with high removal rate properties and preventing scratches, a novel tape was developed having a nanofiber level, densified surface and a flatter surface by slenderizing the fiber and dispersing ultrafine fiber using an innovative technique. Using this novel polishing tape with a fiber size of 200nm, one can produce a 17% lower surface roughness (Ra) (from 1.05A to 0.87A) and a reduced polished surface scratch count of 53 reduced to 18. The novel nanocluster diamond abrasive is synthesized from carbon atoms of explosives created by detonation in a closed chamber under an oxygen leaked atmosphere ambient. Several crystals are bonded together by layers of non-diamond carbon and other elements, forming aggregates with a nanocluster structure. Using this novel nanocluster diamond along with an ultra-fine diamond mixture with a nominal size of 15nm, one is able to produce an improvement of a 48% lower surface roughness Ra (from 0.87A to 0.45A) and a lower polishing surface scratch count reduced from 18 to 7. Overall, these results indicate that a smoother and a reduced scratch polished substrate results in a significant improvement in disk defects and related magnetic performances.

Optimum Grinding Parameters for CRYSTOE and NEOPARIES Based on Orthogonal Experiment

2013 ◽  
Vol 274 ◽  
pp. 61-64
Author(s):  
Li Xu ◽  
Hong Dong Li ◽  
Li Li Zhou
Keyword(s):  
Orthogonal Experiment ◽  
Processing Parameters ◽  
Orthogonal Test ◽  
Test Method ◽  
Quality Requirements ◽  
Military Equipment ◽  
Optimal Processing ◽  
Orthogonal Test Method ◽  
New Material ◽  
Very High

Abstract. As a new material ,CRYSTOE and NEOPARIES are widely used in aerospace and military equipment, its surface quality requirements is very high. CRYSTOE and NEOPARIES disc convex machining has done a lot of trials. And analyzed the experimental data by using Orthogonal test method get the optimal processing parameters. It also provide a reference for future processing tests.

The Cutting Test Research of Cemented Carbide Face Milling Cutter

2013 ◽  
Vol 274 ◽  
pp. 157-160
Author(s):  
Chun Ying Hu ◽  
Jiang Hua Ge ◽  
Xiu Lin Sui ◽  
Ji Jun Zhang
Keyword(s):  
Cutting Parameters ◽  
Face Milling ◽  
Orthogonal Test ◽  
Test Method ◽  
Cemented Carbide ◽  
Processing Efficiency ◽  
Cutting Test ◽  
Milling Tool ◽  
Orthogonal Test Method ◽  
Optimal Cutting Parameters

According to the requirements of the machined workpiece and the actual cutting conditions, the four cemented carbide face milling cutters with equal pitch are selected, using orthogonal test method, the four factors are studyed ,including spindle speed ,feed per tooth ,axial depth of cutting,radial cutting width, and determining the optimal cutting parameters of the milling tool under the condition of different cutting parameters, to improve processing efficiency and surface quality.

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