Technological Characteristics of Thermoplastics Machining Process

Abstract In this manuscript are described and evaluated processes in cutting zone during machining process by turning based on the results of the multifunction measuring system. This system consists of three different measuring units, which allow to measure and monitor processes in the cutting zone, such as size of components of cutting force, temperature field and its evolution during the cutting process, etc. The results as the data from each unit of multifunction measuring system provide detailed and comprehensive information about processes in cutting zone during the machining and they help to better knowledge of processes in cutting zone during the machining.

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Deformation Replication

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s0424820100068394 ◽

1970 ◽

Vol 28 ◽

pp. 280-281

Author(s):

J. Temple Black

Keyword(s):

Cutting Speed ◽

Machining Process ◽

Depth Of Cut ◽

Rake Face ◽

Orthogonal Machining ◽

Aluminum Chips ◽

Before And After ◽

Materials Used ◽

Glass Knife ◽

Very High

Tool materials used in ultramicrotomy are glass, developed by Latta and Hartmann (1) and diamond, introduced by Fernandez-Moran (2). While diamonds produce more good sections per knife edge than glass, they are expensive; require careful mounting and handling; and are time consuming to clean before and after usage, purchase from vendors (3-6 months waiting time), and regrind. Glass offers an easily accessible, inexpensive material ($0.04 per knife) with very high compressive strength (3) that can be employed in microtomy of metals (4) as well as biological materials. When the orthogonal machining process is being studied, glass offers additional advantages. Sections of metal or plastic can be dried down on the rake face, coated with Au-Pd, and examined directly in the SEM with no additional handling (5). Figure 1 shows aluminum chips microtomed with a 75° glass knife at a cutting speed of 1 mm/sec with a depth of cut of 1000 Å lying on the rake face of the knife.

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Performance Analysis on Eco-friendly Machining of Ti6Al4V using Powder Mixed with Different Dielectrics in WEDM

International Journal of Automotive and Mechanical Engineering ◽

10.15282/ijame.17.3.2020.06.0610 ◽

2020 ◽

Vol 17 (3) ◽

pp. 8128-8139

Author(s):

S. Chakraborty ◽

S. Mitra ◽

D. Bose

Keyword(s):

Metal Removal ◽

Removal Rate ◽

Machining Process ◽

Process Efficiency ◽

Machining Parameters ◽

Dielectric Fluids ◽

High Emission ◽

Pulse On Time ◽

Pulse Off Time ◽

Wedm Process

The recent scenario of modern manufacturing is tremendously improved in the sense of precision machining and abstaining from environmental pollution and hazard issues. In the present work, Ti6Al4V is machined through wire EDM (WEDM) process with powder mixed dielectric and analyzed the influence of input parameters and inherent hazard issues. WEDM has different parameters such as peak current, pulse on time, pulse off time, gap voltage, wire speed, wire tension and so on, as well as dielectrics with powder mixed. These are playing an essential role in WEDM performances to improve the process efficiency by developing the surface texture, microhardness, and metal removal rate. Even though the parameter’s influencing, the study of environmental effect in the WEDM process is very essential during the machining process due to the high emission of toxic vapour by the high discharge energy. In the present study, three different dielectric fluids were used, including deionised water, kerosene, and surfactant added deionised water and analysed the data by taking one factor at a time (OFAT) approach. From this study, it is established that dielectric types and powder significantly improve performances with proper set of machining parameters and find out the risk factor associated with the PMWEDM process.

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The Effects of Technological Characteristics on Environmental Pollution

Journal of Environmental Policy and Administration ◽

10.15301/jepa.2020.28.2.183 ◽

2020 ◽

Vol 28 (2) ◽

pp. 183-209

Author(s):

Daimin Noh ◽

Eungkyoon Lee

Keyword(s):

Environmental Pollution ◽

Technological Characteristics

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Modeling of Self-Induced Vibrations that Occur During the Machining Process of Casting Patterns with the Use of The Fuzzy-Neural Networks Method

Archives of Metallurgy and Materials ◽

10.2478/amm-2013-0090 ◽

2013 ◽

Vol 58 (3) ◽

pp. 871-875

Author(s):

A. Herberg

Keyword(s):

Neural Networks ◽

Control System ◽

Network Structure ◽

Fuzzy Systems ◽

Fuzzy Neural Networks ◽

Cnc Machining ◽

Machining Process ◽

Modeling Process ◽

Fuzzy Neural ◽

Takagi Sugeno

Abstract This article outlines a methodology of modeling self-induced vibrations that occur in the course of machining of metal objects, i.e. when shaping casting patterns on CNC machining centers. The modeling process presented here is based on an algorithm that makes use of local model fuzzy-neural networks. The algorithm falls back on the advantages of fuzzy systems with Takagi-Sugeno-Kanga (TSK) consequences and neural networks with auxiliary modules that help optimize and shorten the time needed to identify the best possible network structure. The modeling of self-induced vibrations allows analyzing how the vibrations come into being. This in turn makes it possible to develop effective ways of eliminating these vibrations and, ultimately, designing a practical control system that would dispose of the vibrations altogether.

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SURFACE IRREGULARITIES AS A COMPLEX SIGNAL OF TOOL REPRESENTATION TOGETHER WITH UNEVEN DISPLACEMENT IN RESPECT TO THE WORKPIECE

Metrology and Measurement Systems ◽

10.2478/mms-2014-0013 ◽

2014 ◽

Vol 21 (1) ◽

pp. 133-144 ◽

Cited By ~ 1

Author(s):

Adam Boryczko ◽

Wojciech Rytlewski

Keyword(s):

Machining Process ◽

Surface Irregularity ◽

Complex Signal ◽

Complex Phenomenon ◽

Tool Profile ◽

Surface Irregularities ◽

The Individual ◽

Frequency Functions

Abstract In a dynamic machining process, distortion in surface irregularity is a very complex phenomenon. Surface irregularities form a periodic representation of the tool profile with various kinds of disturbance in a broad range of changes in the height and length of the profile. To discern these irregularity disturbances, interactions of the tool in the form of changes perpendicular and parallel relative to the workpiece were analyzed and simulated. The individual kinds of displacement of the tool relative to the workpiece introduce distortions in the changes of height and length. These changes are weakly represented in standard height and length irregularity parameters and their discernment has been found through amplitude-frequency functions.

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Experimental measures of surface roughness by investigate the effect of Process Parameters in Abrasive Flow Machining Process

i-manager s Journal on Material Science ◽

10.26634/jms.1.3.2560 ◽

2013 ◽

Vol 1 (3) ◽

pp. 22-28

Author(s):

Ravi Gupta ◽

◽

Mohit Sharma ◽

Rahul O. Vaishya ◽

◽

...

Keyword(s):

Surface Roughness ◽

Process Parameters ◽

Machining Process ◽

Abrasive Flow Machining

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Studying The Effect of a New Mixed Cutting Fluid on Surface Roughness

Engineering and Technology Journal ◽

10.30684/etj.v38i11a.1516 ◽

2020 ◽

Vol 38 (11A) ◽

pp. 1593-1601

Author(s):

Mohammed H. Shaker ◽

Salah K. Jawad ◽

Maan A. Tawfiq

Keyword(s):

Surface Roughness ◽

Stainless Steel ◽

Cutting Parameters ◽

Machining Process ◽

Cutting Fluid ◽

Depth Of Cut ◽

Cutting Fluids ◽

Machining Processes ◽

Dry Cutting ◽

Cutting Speeds

This research studied the influence of cutting fluids and cutting parameters on the surface roughness for stainless steel worked by turning machine in dry and wet cutting cases. The work was done with different cutting speeds, and feed rates with a fixed depth of cutting. During the machining process, heat was generated and effects of higher surface roughness of work material. In this study, the effects of some cutting fluids, and dry cutting on surface roughness have been examined in turning of AISI316 stainless steel material. Sodium Lauryl Ether Sulfate (SLES) instead of other soluble oils has been used and compared to dry machining processes. Experiments have been performed at four cutting speeds (60, 95, 155, 240) m/min, feed rates (0.065, 0.08, 0.096, 0.114) mm/rev. and constant depth of cut (0.5) mm. The amount of decrease in Ra after the used suggested mixture arrived at (0.21µm), while Ra exceeded (1µm) in case of soluble oils This means the suggested mixture gave the best results of lubricating properties than other cases.

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