scholarly journals Evaluating The Effectiveness Of Production Process Using Pareto Analysis

2015 ◽  
Vol 18 (1) ◽  
pp. 18-21 ◽  
Author(s):  
Pavel Polák ◽  
Miroslav Prístavka ◽  
Katarína Kollárová
Keyword(s):  
Production Process ◽  
Water Jet ◽  
Final Part ◽  
Abrasive Water Jet ◽  
Pareto Analysis ◽  
Production Processes ◽  
Progressive Technology ◽  
Pareto Method ◽  
Material Cutting

Abstract The aim of this paper is to present the possibilities of using the Pareto method in evaluating the effectiveness of machine production processes. The paper deals with the production process of material cutting using progressive technology and subsequent evaluation of its effectiveness and quality. In the production process, we have used the method of material cutting by abrasive water jet. The Pareto analysis was used for eliminating the shortcomings in the quality of the final part.

scholarly journals Design of Manufacturing Process of Mould for Die Casting by EDM Technology with the Computer Aided

2020 ◽  
Vol 5 (2) ◽  
pp. 57-63
Author(s):  
Luboslav Straka ◽  
Gabriel Dittrich
Keyword(s):  
Production Process ◽  
Die Casting ◽  
Computer Support ◽  
High Quality ◽  
Production Processes ◽  
Computer Aided ◽  
Progressive Technology ◽  
Quality Of Products ◽  
Quality Production

At present, we cannot imagine a modern production process without computer support. At the same time, its integral part is the implementation of advanced and highly sophisticated production processes and technologies. Their aim is first and foremost to ensure quality production of products with high economic efficiency of the production process. EDM technology is one of the currently active progressive technologies. This is a technology that in practice is characterized by high product quality. The high quality of products not only through this progressive technology, but also other, whether conventional or progressive, is difficult to achieve without computer support. The aim of the paper is therefore to demonstrate the process of manufacturing a die-casting mould using progressive EDM technology using computer support.

The Influence of the Feed Rate on the Quality of Surfaces Processed by AWJ at High Pressures

2013 ◽  
Vol 837 ◽  
pp. 196-200
Author(s):  
Carol Schnakovszky ◽  
Eugen Herghelegiu ◽  
Crina Radu ◽  
Ion Cristea
Keyword(s):  
Automobile Industry ◽  
Feed Rate ◽  
Food Industry ◽  
High Pressures ◽  
Mining Industry ◽  
Water Jet ◽  
Abrasive Water Jet ◽  
Metallic Materials ◽  
Wood Industry

Abrasive water jet processing is one of the newest unconventional technologies. It can be used to cut different metallic materials (steel, titanium alloys, aluminium alloys, brass) or non-metallic materials (wood, plastics, glass, stone, granite etc.). Therefore, this technology can be successfully applied in different industries as: food industry, wood industry, aeronautic industry, automobile industry, mining industry. Between the advantageous of abrasive water jet processing technology it is worth noticing the following: it is rapid, very small processing forces are generated, it is silent, no thermal distortions occur. The aim of the current paper was to determine the influence of the feed rate on the quality of surfaces processed by AWJ at high pressure. The parameters that quantified the quality of the processed surface were those defined in the ISO/WD/TC 44 N 1770 standard: width of the processed surface at the jet inlet (Li), width of the processed surface at the jet outlet (Lo), deviation from perpendicularity (u), inclination angle (α) and roughness (Ra).

scholarly journals Study of high-pressure abrasive water jet capacity indices for steep cutting of steels

Mechanik ◽  
2017 ◽  
Vol 90 (11) ◽  
pp. 997-999
Author(s):  
Rafał Kudelski
Keyword(s):  
High Pressure ◽  
New Technologies ◽  
Construction Materials ◽  
Dimensional Accuracy ◽  
Water Jet ◽  
Abrasive Water Jet ◽  
Water Jet Cutting ◽  
Abrasive Water Jet Cutting ◽  
New Construction

Quality of the technological part is one of the major problems of modern machine manufacturing. In many cases, components are manufactured from new construction materials with specific properties that are considered difficult to machining applying conventional technologies. Hence, to search for new technologies, including high-pressure abrasive water jet cutting in the context of the S355J2H steel elements manufacture, while maintaining the quality requirements of the machining, is the need. The results of tests on the accuracy of components made of S355J2H steel are presented as dependent on the water jet pressure, cutting feedrate and the amount of abrasive dozed, with constant element thickness. The accuracy of the design measure – regardless of dimensional accuracy – was the magnitude of the lateral sagging of the cut workpiece resulting from the specific mechanism of water jet removal mechanism.

scholarly journals Experimental study on reverse engineering in case of composite materials cut by water jet cutting

2018 ◽  
Vol 178 ◽  
pp. 03004 ◽  
Author(s):  
Ioan Alexandru Popan ◽  
Nicolae Balc ◽  
Alina Popan ◽  
Alexandru Carean
Keyword(s):  
Reverse Engineering ◽  
Water Jet ◽  
Abrasive Water Jet ◽  
3D Scanner ◽  
Advantages And Disadvantages ◽  
Complex Part ◽  
Water Jet Cutting ◽  
Abrasive Water Jet Cutting ◽  
Master Model

The main objective of the paper consists in remanufacturing of a part, through Abrasive Water Jet Cutting, using a method of reverse engineering based on 3D scanning. The characteristics of this process, the equipment and the main applications are presented. The research starts with manufacturing of a master model made by CFRP. This master model is a complex part cut by abrasive water jet cutting. In scanning process was used the 3D Scanner Artec Space Spider and the point cloud was processed using Artec Studio 11 software. By using this new 3D model was manufactured a new part, with the same setup. The quality characteristics (accuracy and surface quality) of this part was compared with the master model. The paper presents the advantages and disadvantages of this reverse engineering method applied on abrasive water jet cutting process.

scholarly journals Process parameters effect on material removal mechanism and cut quality of abrasive water jet machining

2013 ◽  
Vol 40 (2) ◽  
pp. 277-291 ◽  
Author(s):  
P. Jankovic ◽  
T. Igic ◽  
D. Nikodijevic
Keyword(s):  
Damage Mechanics ◽  
Water Jet ◽  
High Tech ◽  
Abrasive Water Jet ◽  
Machining Processes ◽  
Pull Out ◽  
Water Jet Cutting ◽  
Cut Surface ◽  
Conventional Machining

The process of the abrasive water jet cutting of materials, supported by the theories of fluid mechanics, abrasive wear and damage mechanics, is a high-tech technologies that provides unique capabilities compared to conventional machining processes. This paper, along the theoretical derivations, provides original contributions in the form of mathematical models of the quantity of the cut surface damage, expressed by the values of cut surface roughness. The particular part of this paper deal with the results of the original experimental research. The research aim was connected with the demands of industry, i.e. the end user. Having in mind that the conventional machining processes are not only lagging behind in terms of quality of cut, or even some requests are not able to meet, but with the advent of composite materials were not able to machine them, because they occurred unacceptable damage (mechanical damage or delamination, fiber pull-out, burning, frayed edges).

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