a review - Acta Technica Corviniensis

More documents

Recommendations

Info

ACTA TECHNICA CORVINIENSIS – Bulletin of Engineering ACTA TECHNICA CORVINIENSIS – BULLETIN of ENGINEERING ISSN: 2067-3809 [CD-Rom, online] copyright © UNIVERSITY POLITEHNICA TIMISOARA, FACULTY OF ENGINEERING HUNEDOARA, 5, REVOLUTIEI, 331128, HUNEDOARA, ROMANIA http://acta.fih.upt.ro ACTA TECHNICA CORVINIENSIS – BULLETIN of ENGINEERING ISSN: 2067-3809 [CD-Rom, online] copyright © UNIVERSITY POLITEHNICA TIMISOARA, FACULTY OF ENGINEERING HUNEDOARA, 5, REVOLUTIEI, 331128, HUNEDOARA, ROMANIA http://acta.fih.upt.ro © copyright FACULTY of ENGINEERING ‐ HUNEDOARA, ROMANIA
1. Luba BICEJOVA, 2. Martina NOVAKOVA, 3. Juliana LITECKA MODIFICATIONS OF THE WATER JET SPLITTING 1-3. TECHNICAL UNIVERSITY OF KOSICE, FACULTY OF MANUFACTURING TECHNOLOGIES WITH A SEAT IN PRESOV, STUROVA 31, 080 01 PRESOV, SLOVAKIA ABSTRACT: Water jet cutting technology represents a high-performance cutting and shape dividing of all materials. The factors that influence the properties of machined surface can be summarized as factors of liquid hydrodynamic properties, technical factors influencing hydro-erosive process and technological factors influencing hydroerosive surface of the cutting. Technology of the water jet cutting present progressive approach with unique possibilities that enables shape cutting and dividing of various hard-to-process materials without producing the heat-affected zone of cutting edge within the workpiece. The paper is focused on practical aspects of the AWJ technology setup alternatives; particularly on those which are connected with splitting of the high pressure jet. KEYWORDS: water jet technology, cold cutting, multi-head cutting INTRODUCTION A water power in its erosive form exists in nature for millions of years. High-pressure water jet cutting known as Jet-Cutting has been continually developed for several decades. An important impulse for water jet using in production technology as a tool has come from aircrafts construction and space technologies areas [1,2]. Water jet cutting technology represents a highperformance cutting and shape dividing of all materials. The best advantage of this technology comparing to the other dividing methods is a process of cold cutting. It is used in conditions where splinter-less, splinter and thermic production technologies provide due to mechanical or physical reasons unsatisfying results or where they totally fail [3]. The factors that influence the properties of machined surface can be summarized as factors of liquid hydrodynamic properties, technical factors influencing hydro-erosive process and technological factors influencing hydro-erosive surface of the cutting [4-6]. The paper is discussing some of the newest trends in the area of the AWJ utilization in the field of production engineering and has been created within cooperation with WATTING firm in Presov. METHODOLOGY According to common setups, hydroabrasive cutting is performed on one cutting desk with one technological head (water nozzle 0.35, abrasive nozzle 1.1 and abrasive flow 650 g/min). The core parts of high-pressure cutting device are high-pressure pump, pump with pressure converter, multiplicator with oil-hydraulic drive and pressure accumulator. Water pressure is being fed along a high-pressure pipe into the cutting head which is controlled by an electro-pneumatic valve. The water jet cutting principle (Fig. 1) and subsequent cutting with highpressure water splitting, i.e. cutting with two heads simultaneously (Fig. 2) are possible models of water jet splitting [7,8]. (b) Figure 1: Schematic representation of the principles of water jet cutting and hydroerosion cutting: (a) WJM (hydrodynamic water jet) and (b) AWJM (hydroabrasive water jet) (a) © copyright FACULTY of ENGINEERING ‐ HUNEDOARA, ROMANIA 87
Page 2 and 3:
ACTA TECHNICA CORVINIENSIS - BULLET
Page 4 and 5:
ACTA TECHNICA CORVINIENSIS - Bullet
Page 6 and 7:
Page 8 and 9:
Page 10 and 11:
Page 12 and 13:
Page 14 and 15:
Page 16 and 17:
Page 18 and 19:
Page 20 and 21:
Page 22 and 23:
offset or angled extensions from su
Page 24 and 25:
There are two process trees at crea
Page 26 and 27:
ROLE OF METAMODELING Detailed resea
Page 28 and 29:
economy, packaging and knock limita
Page 30 and 31:
satisfy constraints. This technique
Page 32 and 33:
metamodel driven conceptual design
Page 34 and 35:
[90.] Jian Deng, 2006, Structural r
Page 36 and 37: The wire movement is reported to th
Page 38 and 39: Figure 5 presents the cross-recepta
Page 40 and 41: RESULTS AND DISCUSSION. Electrochem
Page 42 and 43: REFERENCES [1.] Velisek, J.; Cejpek
Page 44 and 45: October 2008 (6.200 BAR) Figure 1.
Page 46 and 47: Figure 5. High pressure connection
Page 48 and 49: FD max = (σ1,h,BHF ,μ,t,n,K fm ,r
Page 50 and 51: Table 2: Ranges of variables select
Page 52 and 53: which solves the problem of mobile
Page 54 and 55: Figure 5. Diagram illustrating the
Page 56 and 57: CONCLUSIONS Based on the discussed
Page 58 and 59: ACTA TECHNICA CORVINIENSIS - Bullet
Page 60 and 61: market and competitive price. This
Page 62 and 63: [4.] RAJŇÁK, Milan a kol.: Cenov
Page 66 and 67: temporary organizational Project Po
Page 68 and 69: projects belong to the Project Port
Page 70 and 71: problem”, European Journal of Ope
Page 72 and 73: Figure 3. EBM process The applicati
Page 74 and 75: The benefits of registration to ISO
Page 76 and 77: assumed ratio of 12 ) has been made
Page 78 and 79: REFERENCES [1] Budzik G., Kozik B.,
Page 80 and 81: MHD effects on impulsively started
Page 82 and 83: cS(Pr−1)( Gr − bGm) + Gmb( S
Page 84 and 85: The concentration distribution is f
Page 90 and 91: to test possible ways to definition
Page 92 and 93: second meeting of United Nations Ea
Page 94 and 95: “BEAM Plus for New Building” as
Page 98 and 99: anchors then to the foundation. For
Page 100 and 101: CALCULATIONS The 28 cm long simply
Page 102 and 103: The simulation engine air inlet geo
Page 106 and 107: much that turbocharger compressor e
Page 108 and 109: The results were presented that usi
Page 110 and 111: The motion of the spring pendulum i
Page 114 and 115: 114 Table 1. Tables and abbreviatio
Page 116 and 117: technology of AWJ. In: ERIN 2009. -
Page 118 and 119: ρ is the water density (1000 kg/m
Page 120 and 121: The plant capacity factor is the ra
Page 124 and 125: System MONTE CARLO 10000 simulation
Page 126 and 127: METHODS. Milk samples The samples f
Page 132 and 133: appropriate regeneration steps [Sai
Page 134 and 135: of metals hydroxide. This can be ex
Page 136 and 137:
Table (1):-Constant values of Langm
Page 138 and 139:
CONCLUSIONS Several sorption topics
Page 140 and 141:
power rating-switching frequency pr
Page 142 and 143:
Page 144 and 145:
Page 146 and 147:
expressive growth of single element
Page 148 and 149:
Figure 12. Tactics of avoiding 4. T
Page 150 and 151:
Page 152 and 153:
Page 154 and 155:
Page 156 and 157:
Page 158 and 159:
Page 160 and 161:
Page 162 and 163:
Page 164 and 165:
show all

a review - Acta Technica Corviniensis

Create successful ePaper yourself

Delete template?

Save as template?