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  • A Study of Air-Jet Texturing Nozzles: The Effects of ...

    A thorough investigation of the existing texturing nozzles will, no doubt, lead to the design of improved nozzles. This paper reports the experimental research carried on the scaled-up versions of the T100 HemaJet with varying geometrical configurations, being the exit shape, situation, and inclination of the inlet holes, and the ratio of the incoming holes area to the nozzle’s main duct area.

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  • (PDF) Effect of Nozzle Geometry on Air-Jet Texturing ...

    Abstract and Figures This paper systematically investigates the effect of a number of geometric parameters on the texturing performance of air-jet texturing nozzles. In order to facilitate the...

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  • Effect of Nozzle Geometry on Air-Jet Texturing Performance

    single air inlet hole located far from the nozzle exit. A curved diverging exit profile is essential for successful texturing. The results of the tests to determine the effect of air inlet angle are inconclusive and require further investigation. The air-jet texturing process is widely known for its ability to produce spun-like

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  • Effect of nozzle size on texturing performance: comparison ...

    Using four texturing nozzles, both air-jet and steam-jet textured yarns were manufactured. The effect of nozzle size on process and yarn parameters has been studied and compared with air-jet ...

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  • Air-jet yarn texturing and its nozzles - Textile Today

    2015-3-1 · Early texturing nozzle had an axial yarn feed while the compressed air was admitted to the nozzle body through a side entry. It also had an impact element of a flat plate type. Nevertheless, the lack of aerodynamic design of the inner configuration caused tremendous losses to the air flow resulting in inefficient texturing.

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  • Effect of air-jet texturing on adhesion behaviour of ...

    Results of the tensile measurements are given in Table 4. As it is expected, tensile results show a decrease in tenacity due to air-jet texturing process. The air-jet texturing turbulence in the nozzle disorientates the filaments, resulting a decrease in tenacity of the textured yarn.

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  • ABSTRACT - repository.lib.ncsu.edu

    structure of the air-jet textured yarn, mechanism of loop formation, role of water in texturing etc. This current research is aimed to study one such aspect namely the effect of process variables and nozzle design on the tensile properties of the air-jet textured yarns.

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  • (PDF) Airjet texturing

    During the study it was found that water acted as lubricant to reduce friction between the filaments in the wet texturing process as the fila- ment yarn traveled through the nozzle …

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  • Numerical and experimental study of the influence of ...

    In this paper, a Computational Fluid Dynamics (CFD) model is presented to study the effects of some air jet nozzle structural parameters as injector angle, nozzle length, and air pressure level on the swirling flow generated inside the nozzle. Followed by design and construction of a mechanism for producing jet ring and modified jet ring yarns.

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  • Investigation of the influence of effect-yarn draw and ...

    a comparative study between the dynamic friction characteristics of compact and siro yarns Investigation of the influence of effect-yarn draw and effect-yarn overfeed on texturing performance: comparison between air-jet and steam-jet textured yarn

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  • ABSTRACT - repository.lib.ncsu.edu

    structure of the air-jet textured yarn, mechanism of loop formation, role of water in texturing etc. This current research is aimed to study one such aspect namely the effect of process variables and nozzle design on the tensile properties of the air-jet textured yarns.

    Get Price
  • ABSTRACT - NCSU

    Dani, Nikhil Prakash. The fundamentals of air-jet texturing. (Under the direction of Dr. William Oxenham and Dr. Behnam Pourdeyhimi) Air-jet texturing is a well-established filament yarn processing technology that has been around for more than half a century. There is much debate about various aspects of the

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  • Blend irregularity of air-jet textured yarns

    jet was used. 2.3 Nozzles Two cylindrical and two converging-diverging nozzles were chosen for parallel feed air-jet texturing. Table 3 provides data on nozzle parameters. The di fference between HemaJet with T I 00 core and T31 0 core I ies in that the T 100 core has one air hole while the T31 0 core has three air holes. The combined

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  • Supersonic jet texturing of yarns (76th Thomas Hawksley ...

    machines, air-jet spinning, fluid-jet weaving, weft knit- ting, multi-filament mingling (interlacing), yarn splicing, fabric dyeing and finishing machines, and the air-jet tex- turing of filament yarns. The air-jet texturing process, which has evolved over the past 30 years, is a purely mechanical yarn texturing

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  • American Journal of Engineering Research (AJER) 2013

    Keywords: -sea sand, Vibrating chamber, Abrasive jet machine , abrasives, Nozzles, glass, I. INTRODUCTION Sand Abrasive compressed air is used for surface cutting, holing of surface on the brittle material like glass, this also used for surface cleaning and surface texturing etc. In AJM process fine particles of sea sand

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  • Simulation of Airflow Motion in Jet Nozzle with Different ...

    Jet nozzle with tangentially injected airflow has been applying into spinning technology due to the tangential force produced by swirling airflow. In order to understand the airflow motion trajectory in jet nozzle, modify the nozzle structure and dimension, FLUENT software program is used. Some parameters which are closely related the airflow motion profiles are studied, such as the diameter ...

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  • Development and testing of a relay nozzle concept for air ...

    Air jet weaving is the most productive method to produce woven fabrics. However, air-jet weaving machines have a significantly higher level of energy consumption compared to other weaving machines. Approximately 80% of compressed air is consumed by the relay nozzles.

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  • Department of Textile Technology IIT Delhi

    Effect of linear density of feed yarn filaments and air jet texturing process variables on compressional properties of woven fabrics, Indian J. Fibre & Textile Res., 41(1) 47-54. S. Renuka, Dipayan Das & R. S. Rengasamy (2016) Studies on needle-punched natural and polypropylene fiber nonwovens as oil sorbents.

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  • Investigation of the influence of effect-yarn draw and ...

    a comparative study between the dynamic friction characteristics of compact and siro yarns Investigation of the influence of effect-yarn draw and effect-yarn overfeed on texturing performance: comparison between air-jet and steam-jet textured yarn

    Get Price
  • Yarn Spinning - Air Jet Spinning - Textile School

    Air jet spinning has offered yarn manufacturers the opportunity to produce yarn at relatively high production rate. Unlike other spinning methods in which productivity is limited by the amount of twist in the yarn, Air Jet yarns can be produced at the same production rate regardless of yarn counts. Murata Vortex Spinners are one such leading Air Jet spinning …

    Get Price
  • Development and testing of a relay nozzle concept for air ...

    Air jet weaving is the most productive method to produce woven fabrics. However, air-jet weaving machines have a significantly higher level of energy consumption compared to other weaving machines. Approximately 80% of compressed air is consumed by the relay nozzles.

    Get Price
  • American Journal of Engineering Research (AJER) 2013

    Keywords: -sea sand, Vibrating chamber, Abrasive jet machine , abrasives, Nozzles, glass, I. INTRODUCTION Sand Abrasive compressed air is used for surface cutting, holing of surface on the brittle material like glass, this also used for surface cleaning and surface texturing etc. In AJM process fine particles of sea sand

    Get Price
  • ULTRA HIGH PRESSURE WATERJET PEENING PART I: SURFACE TEXTURE

    using round and fan-jet nozzles are shown in Figure 3. It is evident that the water peening using the round-jet nozzle caused rougher surface than those using the fan-jet nozzle for stand off distance greater than 36 mm. In the case of fan-jet nozzle, although the kinetic jet energy was

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  • Texturing of Glass Surface using Micro-slurry Jet ...

    Existing methods for the microfabrication of convex structures on a glass surface require a complex and expensive masking process. In this study, a simple microfabrication method that combines the masking process using polyimide tapes and a micro-slurry jet (MSJ) process was developed. The masking process was performed using a CO₂ laser machine, and the surface of the processed glass was ...

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  • Yarn Spinning - Air Jet Spinning - Textile School

    Air jet spinning has offered yarn manufacturers the opportunity to produce yarn at relatively high production rate. Unlike other spinning methods in which productivity is limited by the amount of twist in the yarn, Air Jet yarns can be produced at the same production rate regardless of yarn counts. Murata Vortex Spinners are one such leading Air Jet spinning …

    Get Price
  • A Sustainable Challenges of Abrasive Jet Machining (AJM ...

    Abrasive jet micromachining (AJM) is a promising non-traditional machining technology for the cost effective fabrication of micro-structures on brittle and hard materials. The AJM process is based on the erosion of substrate by an abrasive-laden air jet or abrasive air jet (AAJ).

    Get Price
  • Research Publications

    versteeg, hk, bilgin, s, acar, m (1994) effects of geometry on the flow characteristics and texturing performance of air-jet texturing nozzles, textile research journal, 64(4), pp.240-246, issn: 0040-5175. doi: 10.1177/004051759406400409.

    Get Price
  • Air Jet Dty PDF

    air jet dty.pdf - Free download as PDF File (.pdf), Text File (.txt) or read online for free.

    Get Price
  • ARPN :: Journal of Engineering and Applied Sciences (JEAS)

    In this study, a series of small and large scale direct shear tests were conducted to evaluate the effect of mixing fly ash in two ratios i.e. 20 and 25% by volume on the shear strength behaviour of coal mine overburden dump rock and these results are compared with direct shear tests conducted on overburden dump material without fly ash.

    Get Price
  • Asian Economic and Social Society

    Keywords: Air jet loom, Air consumption, Air compressor, Nozzle, Factors, Pick insertion. Article History: Received: 14 March 2017, Revised: 7 April 2017, Accepted: 26 May 2017, Published: 30 May 2017 Contribution Originality: This study is one of very few studies which have tried to drawn together the possible setting points of air jet-loom responsible for high air consumption.

    Get Price
  • (TT305) ADVCNED YARN MANUFACUTRING

    Air texturing – air nozzles Laminar vs Turbulent flow – Properties and applications of air textured yarns. Texturamat and dynafil – M.Thermal stress tester – quality control in texturising – textured yarn defects – texturing problems. TEXT BOOKS: 1. C.W.Lawrence, “Technology of Yarn Production”, Wood Head Publishers, London ...

    Get Price
  • Ruslan Melentiev

    It is shown that, due to viscous friction, such nozzles are significantly less efficient in terms of particle saturation with kinetic energy. The study highlights the effects of nozzle diameter and length, air pressure, particle size and density on particle velocity development through the jet field.

    Get Price
  • Edmir Silva

    Air-jet texturing is one of the most versatile methods known to convert flat synthetic filament yarns to textured yarns. Over the years, developments in air jet texturing have been related to the developments in nozzle design. With this developement yarns from finer denier to extremely coarse denier can be textured.

    Get Price
  • Semester-VI Yarn Formation III (PC TT 601) Name of the ...

    • Air jet principle – Principle of air jet Weft insertion, types of nozzles, profile reed, Confuser guide, tendum nozzle. Air requirements. Loom timing diagram. Jetting sequence of relay nozzle. • Water jet principle – Weft insertion system – Nozzles and its design- Water requirements – Loom timing diagram 5 6

    Get Price
  • MEMS-BASED THERMAL MANAGEMENT OF HIGH HEAT FLUX DEVICES ...

    Numerical work, which incorporates two-phase effects in jet impingement, has been reported in the literature. With relevance to electronic cooling, Wang et al. [16] performed a computational study of two-phase jet impingement cooling of a simulated chip by solving the averaged transport equations for the two phases.

    Get Price
  • Reducing environmental impact in air jet weaving ...

    As example, air-jet weaving is the most productive but also most energy consuming weaving method (Schröter and Holtermann, 2014). Air-jet weaving is a type of technology in which the warp is inserted into the warp shed with compressed air by different nozzles types. In Figure 1 a schematic view of the weft insertion components is shown.

    Get Price
  • Air Jet Dty PDF

    air jet dty.pdf - Free download as PDF File (.pdf), Text File (.txt) or read online for free.

    Get Price
  • A Sustainable Challenges of Abrasive Jet Machining (AJM ...

    Abrasive jet micromachining (AJM) is a promising non-traditional machining technology for the cost effective fabrication of micro-structures on brittle and hard materials. The AJM process is based on the erosion of substrate by an abrasive-laden air jet or abrasive air jet (AAJ).

    Get Price
  • Steam as an alternative fluid for air in spun-like ...

    Effects of core-yarn overfeed on texturing performance: Comparison between air-jet and steam-jet texturing. The Journal of Textile Institute , 107 , 291 – 299 . ) investigated the use of high-pressure steam for spun-like textured yarn manufacturing and concluded that steam can be used as an alternative fluid for air in the spun-like textured ...

    Get Price
  • Research Publications

    versteeg, hk, bilgin, s, acar, m (1994) effects of geometry on the flow characteristics and texturing performance of air-jet texturing nozzles, textile research journal, 64(4), pp.240-246, issn: 0040-5175. doi: 10.1177/004051759406400409.

    Get Price
  • ENERGY BASED EVALUATION OF WATERJET PEENING FOR INDUSTRIAL ...

    The intent of this study was not to perform a complete Analysis of Variance (ANOVA), however the cumulative effects (Pareto) can provide further insight into the dominant process parameters. In this study the energy density was controlled by only the pressure and traverse rate. The standoff distance and air flow rate influenced the jet structure.

    Get Price
  • A Sustainable Challenges of Abrasive Jet Machining (AJM ...

    Abrasive jet micromachining (AJM) is a promising non-traditional machining technology for the cost effective fabrication of micro-structures on brittle and hard materials. The AJM process is based on the erosion of substrate by an abrasive-laden air jet or abrasive air jet (AAJ).

    Get Price
  • Fabrication of optimized streamlined micro nozzles by ...

    A streamlined micro nozzle is manufactured with a smooth inner surface, 75 µ m inlet diameter and 21 µ m outlet diameter, and the thickness of the substrate is increased from 100 µ m to 206 µ m. Furthermore, the feed depth of the micro electrode is optimized to improve the process efficiency of electroplating.

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  • ARPN :: Journal of Engineering and Applied Sciences (JEAS)

    In this study, a series of small and large scale direct shear tests were conducted to evaluate the effect of mixing fly ash in two ratios i.e. 20 and 25% by volume on the shear strength behaviour of coal mine overburden dump rock and these results are compared with direct shear tests conducted on overburden dump material without fly ash.

    Get Price
  • Air Jet Dty PDF

    air jet dty.pdf - Free download as PDF File (.pdf), Text File (.txt) or read online for free.

    Get Price
  • Department of Textile Technology IIT Delhi

    A.K.Sengupta, V.K.Kothari and R. Alagirusamy 'Influence of Drawing Variables on the Properties of Air Textured Yarns made from POY Polyester Feeder Yarns' Man Made Fibre Year Book of CTI (1989) p80-83. A.K.Sengupta, V.K.Kothari and R. Alagirusamy 'An analysis of the Air-Jet Yarn-Texturing Process'. Letter to the editor, Journal of the Textile ...

    Get Price
  • Ahmed Hassanin - Associate Professor - Egypt-Japan ...

    Followed by design and construction of a mechanism for producing jet ring and modified jet ring yarns. Finally, an experimental study on the effects of some nozzles and air flow parameters on jet ring and modified jet ring yarn properties is presented intending to illustrate the role of inserting the air jet nozzle for improving these systems.

    Get Price
  • ENERGY BASED EVALUATION OF WATERJET PEENING FOR INDUSTRIAL ...

    The intent of this study was not to perform a complete Analysis of Variance (ANOVA), however the cumulative effects (Pareto) can provide further insight into the dominant process parameters. In this study the energy density was controlled by only the pressure and traverse rate. The standoff distance and air flow rate influenced the jet structure.

    Get Price
  • Steam as an alternative fluid for air in spun-like ...

    Effects of core-yarn overfeed on texturing performance: Comparison between air-jet and steam-jet texturing. The Journal of Textile Institute , 107 , 291 – 299 . ) investigated the use of high-pressure steam for spun-like textured yarn manufacturing and concluded that steam can be used as an alternative fluid for air in the spun-like textured ...

    Get Price
  • Publications - Fluid Mechanics

    Lyu, B and Dowling, AP (2019) An experimental study of the effects of lobed nozzles on installed jet noise. Experiments in Fluids, 60. ISSN 0723-4864. Ma, Y and Cui, J and Vadlamani, NR and Tucker, P (2019) Hierarchical geometry modelling using the immersed boundary method. COMPUTER METHODS IN APPLIED MECHANICS AND ENGINEERING, 355. pp. 323-348 ...

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  • Department of Textile Technology IIT Delhi

    A.K.Sengupta, V.K.Kothari and R. Alagirusamy 'Influence of Drawing Variables on the Properties of Air Textured Yarns made from POY Polyester Feeder Yarns' Man Made Fibre Year Book of CTI (1989) p80-83. A.K.Sengupta, V.K.Kothari and R. Alagirusamy 'An analysis of the Air-Jet Yarn-Texturing Process'. Letter to the editor, Journal of the Textile ...

    Get Price
  • All-organic superhydrophobic coatings with mechanochemical ...

    We also tested the ability of the PKFE coatings to withstand repeated jet impact events by subjecting them 20 times to a 0.25 mm jet at 25 m s −1, for ~10 s each time. No damage was incurred. No ...

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  • Etching Channels to Create an Air Bearing or a ...

    Air = clean and contaminant free; The Challenges: Small Gap + Tight Tolerance. A liquid bearing can have a 100 µm bearing gap, but an air …

    Get Price
  • Ahmed Hassanin - Associate Professor - Egypt-Japan ...

    Followed by design and construction of a mechanism for producing jet ring and modified jet ring yarns. Finally, an experimental study on the effects of some nozzles and air flow parameters on jet ring and modified jet ring yarn properties is presented intending to illustrate the role of inserting the air jet nozzle for improving these systems.

    Get Price
  • Andrew McNary - Research Scientist - Comco Inc.

    View Andrew McNary’s profile on LinkedIn, the world’s largest professional community. Andrew has 4 jobs listed on their profile. See the complete profile on LinkedIn and discover Andrew’s ...

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  • 16290205.pdf

    Scribd es el sitio social de lectura y editoriales más grande del mundo.

    Get Price
  • Asian Economic and Social Society

    Keywords: Air jet loom, Air consumption, Air compressor, Nozzle, Factors, Pick insertion. Article History: Received: 14 March 2017, Revised: 7 April 2017, Accepted: 26 May 2017, Published: 30 May 2017 Contribution Originality: This study is one of very few studies which have tried to drawn together the possible setting points of air jet-loom responsible for high air consumption.

    Get Price
  • (TT305) ADVCNED YARN MANUFACUTRING

    Air texturing – air nozzles Laminar vs Turbulent flow – Properties and applications of air textured yarns. Texturamat and dynafil – M.Thermal stress tester – quality control in texturising – textured yarn defects – texturing problems. TEXT BOOKS: 1. C.W.Lawrence, “Technology of Yarn Production”, Wood Head Publishers, London ...

    Get Price
  • Ruslan Melentiev

    It is shown that, due to viscous friction, such nozzles are significantly less efficient in terms of particle saturation with kinetic energy. The study highlights the effects of nozzle diameter and length, air pressure, particle size and density on particle velocity development through the jet field.

    Get Price
  • Edmir Silva

    Air-jet texturing is one of the most versatile methods known to convert flat synthetic filament yarns to textured yarns. Over the years, developments in air jet texturing have been related to the developments in nozzle design. With this developement yarns from finer denier to extremely coarse denier can be textured.

    Get Price
  • Semester-VI Yarn Formation III (PC TT 601) Name of the ...

    • Air jet principle – Principle of air jet Weft insertion, types of nozzles, profile reed, Confuser guide, tendum nozzle. Air requirements. Loom timing diagram. Jetting sequence of relay nozzle. • Water jet principle – Weft insertion system – Nozzles and its design- Water requirements – Loom timing diagram 5 6

    Get Price
  • MEMS-BASED THERMAL MANAGEMENT OF HIGH HEAT FLUX DEVICES ...

    Numerical work, which incorporates two-phase effects in jet impingement, has been reported in the literature. With relevance to electronic cooling, Wang et al. [16] performed a computational study of two-phase jet impingement cooling of a simulated chip by solving the averaged transport equations for the two phases.

    Get Price
  • Reducing environmental impact in air jet weaving ...

    As example, air-jet weaving is the most productive but also most energy consuming weaving method (Schröter and Holtermann, 2014). Air-jet weaving is a type of technology in which the warp is inserted into the warp shed with compressed air by different nozzles types. In Figure 1 a schematic view of the weft insertion components is shown.

    Get Price
  • Air Jet Dty PDF

    air jet dty.pdf - Free download as PDF File (.pdf), Text File (.txt) or read online for free.

    Get Price
  • A Sustainable Challenges of Abrasive Jet Machining (AJM ...

    Abrasive jet micromachining (AJM) is a promising non-traditional machining technology for the cost effective fabrication of micro-structures on brittle and hard materials. The AJM process is based on the erosion of substrate by an abrasive-laden air jet or abrasive air jet (AAJ).

    Get Price