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Research on Abrasive Water-jet Cutting Technology Concerning Heavy-section Materials

Author: LiLianRong
Tutor: TangZuo
School: Guilin University of Electronic Science and Technology
Course: Mechanical Design and Theory
Keywords: Large thickness of the material Abrasive Water Jet Cutting process Orthogonal Numerical Simulation Parameter Optimization
CLC: TG48
Type: Master's thesis
Year: 2009
Downloads: 69
Quote: 0
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Abstract


Has a \Since the solid-liquid two-phase jet own \At present, the abrasive water jet cutting technology applied research focused on improving the accuracy and efficiency in both directions, the subject is raised in this context, to explore the existing process conditions and efficient implementation of large thickness of the material surface quality cut and guarantee an effective way . Major research tools and processes include: (1) to industry development status as the basis, in the process of analysis of large thickness of the material theoretically abrasive water jet cutting and generate defects in reason, in the cutting mechanism, structural characteristics of the jet, abrasive the force and movement of the key technology and other aspects seek solutions; (2) formulate a reasonable combination of process parameters, design orthogonal cutting tests on 45 steel and marble as ductility, brittleness typical representative of the two materials for cutting tests. Collecting the actual parameters of the jet pressure, cutting speed, target distance and abrasive volume concentration of the main parameters such as the level of four-factor four orthogonal poor visual analysis, in order to obtain the primary and secondary factors and the most optimal combination of parameters. The collected experimental data regression analysis to determine the depth of cut, cutting quality equation; (3) Based on FLUENT engineering fluid analysis software, abrasive water jet and external flow field numerical simulation analysis, improved nozzle structure parameters, process parameters optimization provides a theoretical basis; (4) on the basis of the previous research proposed for large thickness of material processing abrasive water jet cutting equipment to improve the overall design. Affecting the processing of the current efficiency and the quality of the key components such as the nozzle assembly, such as abrasive supply device to improve the design, the simulation results of the experimental verification to create conditions; (5) General process parameters, equipment, environment and other factors, the thickness of material proposed for large processing premixed abrasive water jet cutting process parameter optimization portfolio and associated experimental verification. In this paper, theoretical analysis, experimental research, numerical simulation, structural optimization to improve the design and process parameters on the large thickness of the material multi-angle abrasive water jet cutting process conducted in-depth research. The results show that for the active processing apparatus for adaptive parameter combination local improvement and optimization, cutting efficiency can be increased by 50%, and significantly improved processing quality. China is faced with targeted development of new equipment, this study extends the abrasive water jet cutting technology applications and their marketing provides effective technical support.

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CLC: > Industrial Technology > Metallurgy and Metal Craft > Welding, metal cutting and metal bonding > Metal cutting and equipment
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