Research about Surface Quality of Polytetrafluoroethylene (Teflon) after Inner Turning

2015 ◽  
Vol 809-810 ◽  
pp. 213-219
Author(s):  
Cristina Ileana Pascu ◽  
Iulian Popescu ◽  
Alexandru Vintilescu
Keyword(s):  
Surface Quality ◽  
Cutting Process ◽  
Uniform Structure ◽  
Internal Diameter ◽  
Outer Diameter ◽  
Roughness Parameters ◽  
High Originality

For this study with high originality, a teflon bushing with outer diameter of 58 mm and 32 mm internal diameter has been turned. After inner turning with various cutting feeds, the part has been cut in half to measure roughness. The roughness parameters Ra, Rz and Rq have beeen measured with an electronic roughness tester Mitutoyo, Japan, SJ-201 P. The micro-asperity images for each of the 6 samples performed are presented in the paper. Diagrams with the variations of roughness parameters are also given in this study. The trend is the increasing of roughness values with feed increasing, but some abnormalities also appear in samples 3 and 4 for Ra and Rz. At sample 5 for Rz parameter and sample 6 for Rq parameter a decreasing of values occurs, although geometrically there should be with ascending tendencies. It follows that in teflon turning the cutting process is not uniform, although there are no marks on the blade. However, because this material is not metallic, it does not have a uniform structure, which influences the resulted roughness. This is the cause of the anomalies established by these experiments.

Ultraschallüberlagertes Trennschleifen von Faserverbundwerkstoffen*/Ultrasound abrasive cutting of fiber composites - Survey on the potential and mode of action

2016 ◽  
Vol 106 (01-02) ◽  
pp. 39-43
Author(s):  
Y. Babenko ◽  
T. Mayer ◽  
A. Gebhardt
Keyword(s):  
Surface Quality ◽  
Process Parameters ◽  
Mode Of Action ◽  
Fiber Composites ◽  
Cutting Process ◽  
Force Analysis ◽  
Abrasive Cutting

Dieser Fachartikel befasst sich mit der Untersuchung des Potentials der Ultraschallüberlagerung beim Trennschleifen moderner Faserverbundwerkstoffe. Es wurde eine Zerspankraftanalyse des Trennschleifprozesses am CFK-Werkstück mit variierenden Prozessparametern durchgeführt. Zudem wurden die Oberflächenqualitäten der Schnittkanten betrachtet.   The presented study describes the investigation of the potential of ultrasound abrasive cutting of modern fiber composites. A force analysis of the abrasive cutting process of CFRP was conducted, while the process parameters were varied. In addition, the surface quality of the machined workpieces was observed.

scholarly journals Outer diameter and Surface Quality of Micro Metal Tubes in Hollow Sinking

2020 ◽  
Vol 47 ◽  
pp. 217-223 ◽  
Author(s):  
Takuma Kishimoto ◽  
Hayate Sakaguchi ◽  
Saki Suematsu ◽  
Kenichi Tashima ◽  
Satoshi Kajino ◽  
...  
Keyword(s):  
Surface Quality ◽  
Outer Diameter

Considerations on Cutting Regime Influence of NC Laser Cutting Machine Tool on Processed Surface Quality

2015 ◽  
Vol 760 ◽  
pp. 475-481
Author(s):  
Cristina Biris ◽  
Octavian Bologa ◽  
Claudia Girjob ◽  
Sever Gabriel Racz
Keyword(s):  
Surface Quality ◽  
Experimental Research ◽  
Laser Cutting ◽  
Cutting Parameters ◽  
Metallic Materials ◽  
Response Functions ◽  
Roughness Parameters ◽  
Cutting Machine ◽  
Factors Of Influence

This paper presents the study of the influence of cutting parameters on surface quality in laser cutting of metallic materials. In this paper, it is shown which of the cutting parameters have the greatest influence on the quality of the processed surfaces by measuring various roughness parameters. After the experimental research was carried out a ranking of the factors of influence on the response functions was made, also graphs of dependency to various parameters of roughness were made.

scholarly journals SURFACE QUALITY OF A WORK MATERIAL'S INFLUENCE ON THE VIBRATIONS OF THE CUTTING PROCESS

2002 ◽  
Vol 252 (4) ◽  
pp. 729-737 ◽  
Author(s):  
J. LIPSKI ◽  
G. LITAK ◽  
R. RUSINEK ◽  
K. SZABELSKI ◽  
A. TETER ◽  
...  
Keyword(s):  
Surface Quality ◽  
Cutting Process

Dimensional analyses and surface quality of the laser cutting process for engineering plastics

2008 ◽  
Vol 41 (3-4) ◽  
pp. 259-267 ◽  
Author(s):  
Mustafa Kurt ◽  
Yusuf Kaynak ◽  
Eyup Bagci ◽  
Halil Demirer ◽  
Mahir Kurt
Keyword(s):  
Surface Quality ◽  
Laser Cutting ◽  
Cutting Process ◽  
Engineering Plastics

New Ways at the Fine Grinding

2013 ◽  
Vol 581 ◽  
pp. 255-260 ◽  
Author(s):  
Martin Novák
Keyword(s):  
Surface Quality ◽  
Traditional Approach ◽  
Surface Profile ◽  
Ground Surface ◽  
Cutting Parameters ◽  
Grinding Wheel ◽  
Roughness Parameters ◽  
Machined Parts ◽  
Machining Operations

The traditional approach to grinding is to operate within the limits of surface quality. The requirements for surface quality in grinding are higher than those in other common machining operations such as turning and milling. The surface quality of machined parts is very important for precise production and assembly. When we focus on roughness parameters after grinding, we can establish the limits of these parameters for typical grain materials: Al2O3, SiC, CBN, SG and others. Increasing demands on accuracy and quality of production leads to research concerned with the properties of these materials and the surface quality after grinding. This paper shows new possibilities for the ground surface with focus on surface roughness obtained under varying combinations of cutting conditions. The influence of the grinding wheel, cutting parameters and coolant on higher surface quality is assessed by roughness parameters Ra, Rz, Rt and the Material portion of a surface profile. These high-precision ground surfaces are shown to have a Nanometres (10-9) unit topography demonstrating that the process is able to replace other finishing technologies such as superfinishing or honing.

Advances in Theoretical Investigation of Work Hardening for Metal Cutting

2012 ◽  
Vol 217-219 ◽  
pp. 2060-2064
Author(s):  
Su Yu Wang ◽  
Wen Jie Yang ◽  
Lin Lin Ma
Keyword(s):  
Surface Quality ◽  
Influencing Factors ◽  
Theoretical Investigation ◽  
Work Hardening ◽  
Metal Cutting ◽  
Service Performance ◽  
Cutting Process ◽  
Forming Mechanism ◽  
Important Significance

Work hardening reserches in metal cutting has an important significance in improving surface quality of the workpiece and the service performance of parts. The paper introduces current researches of the work hardening in metal cutting process, analyses the forming mechanism and influencing factors of the work hardening and discusses the effects of the work hardening on workpiece service performance. At last, the new trends of work hardening researches in metal cutting process are conclusively predicted.

The Effect of Treating Semiproducts of Polymeric Materials with Surfactants on the Quality of their Machining

2018 ◽  
Vol 45 (2) ◽  
pp. 75-77
Author(s):  
O. Yu. Erenkov
Keyword(s):  
Surface Quality ◽  
Polymeric Materials ◽  
Experimental Investigations ◽  
Depth Of Cut ◽  
Preliminary Treatment ◽  
Roughness Parameters ◽  
Depth Of Penetration ◽  
Surface Active ◽  
Active Substances

The results of experimental investigations of surface quality after the lathe machining of polymeric materials subjected to preliminary treatment with surface-active substances are presented. It has been demonstrated in experiments that the preliminary treatment of semiproducts with surfactants ensures an improvement in quality of the surface machined by turning. This is indicated by a reduction in the roughness parameters by a factor of 2–4.5, and here the minimum roughness is achieved at a depth of cut equal to 1.0–1.15 of the depth of penetration of the surfactant into the material.

Comparison of Experimental Stamping Punch Machinability Made out of Unconventional Materials

2014 ◽  
Vol 635 ◽  
pp. 81-84
Author(s):  
Peter Ižol ◽  
Dagmar Draganovská ◽  
Juraj Hudák ◽  
Miroslav Tomáš ◽  
Jozef Beňo
Keyword(s):  
Surface Roughness ◽  
Surface Quality ◽  
Experimental Work ◽  
Roughness Parameters ◽  
Scallop Height ◽  
Shaped Surface ◽  
Final Surface ◽  
Surface Roughness Parameters ◽  
Cam Software

The paper describes experimental stamping punch production from the view machinability and quality of stamping punch active surfaces. The tin car-body stamping punch has been chosen as a subject of experimental work. Two unconventional materials such as Textit J and Fibroflex 5 have been chosen for stamping punch. Milling strategies have been proposed, optimized and verified using CAM software SolidCAM considering the maximum Scallop Height. The final surface quality on selected areas of stamping punch shaped surface has been evaluated by surface roughness parameters Ra and Rz. These have been compared to Scallop Height set in CAM software. Manufactured areas on shaped surface were optically evaluated as well.

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