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  • Fibre distribution in air-jet and ring yams

    2013-12-19 · packing density in case of single air-jet yarn in the outermost zone can be explained 011 the basis of the spinning mechanism. Air-jet yarn is made of wrapper fibres wound around a core of fibre flux coming out of front roller. The twisting system has two nozzles. The second nozzle twists the fibre bundle and first

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  • Effects of Air and Yarn Characteristics in Air-Jet Filling ...

    In air jet looms, the weft yarn is transported from the prewinder to the reed by means of an air flow. In this work, the motion of a yarn inside a main nozzle during the first stage of an ...

    Get Price
  • Structure and working principle of air-jet loom weft ...

    2021-5-18 · Finally, weft yarn enters into the main nozzle and rests there. Air- jet loom weft insertion cycle: When the reed moves toward the back dead center position and the dwell period of the sley gets begins, the weft insertion cycle begins. First of all, the weft brake of weft accumulator gets opened. Now the air supply of main nozzle gets switched on.

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  • E ect of nozzle geometry on air-jet texturing performance

    2017-3-10 · The air-jet texturing process is widely known for its ability to produce spun-like synthetic continuous filament yarns. Structural modification is achieved by contact of the continuous feed yarn with a supersonic air stream delivered by a nozzle. The details of the flow patterns are influenced by the geometry of the nozzle. This

    Get Price
  • Nios II-Based Air-Jet Loom Control System

    2021-8-20 · The air-jet loom is a shuttleless loom that inserts the weft with the airflow’s frictional traction force on the weft yarn. Most air-jet looms today use main and auxiliary nozzles to relay air jetting and weft insertion. Therefore, weft insertion control mainly focuses on controlling the valve solenoid of the main and auxiliary nozzles.

    Get Price
  • (PDF) Manufacturing of Air-Textured type yarn without ...

    A model machine has been developed to produce air-jet type bulked yarn without using e air. Purely a mechanical false-twister (Bush-type) is used along with …

    Get Price
  • 31—AN ANALYSIS OF THE AIR-JET YARN-TEXTURING

    2018-6-16 · 31—AN ANALYSIS OF THE AIR-JET YARN-TEXTURING PROCESS PART VI: THE MECHANISM OF LOOP FORMATION* By M. ACAR, R. K. TURTON, and G. R. WRAY After a brief summary of the findings and conclusions of the previously reported investigations on the air-jet texturing process, a mechanism of loop formation is postuliited. The factors affecting loop

    Get Price
  • Method for air-bubble texturing endless filament yarn ...

    A method and machine for treating yarn may include feeding the yarn through both a heat treatment and an air jet texturing nozzle. The texturing nozzle may be supplied with compressed air, producing an air jet with a speed greater than Mach 1 in the yarn channel. The heat treatment may be performed before and/or after feeding the yarn through the texturing nozzle.

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  • Numerical simulation of the yarn formation process in ...

    Article. Numerical simulation of the yarn formation process in Rieter air jet spinning. September 2016; Journal of the Textile Institute 108(3):1-8

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  • Recent advances and challenges of abrasive jet machining ...

    2018-8-1 · Due to boundary conditions between air jet and stable surroundings, abrasive jet velocity is non-uniform in both radial or axial direction. Li et al. conditionally divided air flow into three velocity regions. In the initial region, jet velocity preserves its speed in a form of conus with a base at the nozzle exit.

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  • Properties of air-jet textured yarns

    Air-jet textured yarns produced at const. winding tension produce yarn with higher phys. bulk, higher instability, lower tenacity, and higher elongation. View full-text Article

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  • (PDF) Manufacturing of Air-Textured type yarn without ...

    A model machine has been developed to produce air-jet type bulked yarn without using e air. Purely a mechanical false-twister (Bush-type) is used along with predefined overfeed in the bulking ·

    Get Price
  • JET370G1 Self-Priming Jet Pumps SUS304

    The JET-G1 self priming jet pumps have an automatic jet system. It is versatile and can be used in gardens, well water pumping, etc. This self-priming pump is suitable for the extraction of clean water and non-corrosive chemical liquids. Its performance is reliable and safe…

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  • Prediction of Strength and Weavability of Blended Spun ...

    In this paper, we report on predicting the strength of polyester/viscose spun yarns made on ring, rotor and air-jet spinning systems. A system has been …

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  • Textile Research Journal A core-spun yarn containing a ...

    2021-6-17 · system. The vortex core-spun yarn containing a copper wire has a strength higher by 86.6% and a breaking extension lower by 70.2% compared to the copper wire, while its strain sensitivity in the workable strain range is not affected by either the yarn manufacturing process or the existence of staple fibers. The vortex core-spun yarn containing ...

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  • Recent advances and challenges of abrasive jet machining ...

    2018-8-1 · Due to boundary conditions between air jet and stable surroundings, abrasive jet velocity is non-uniform in both radial or axial direction. Li et al. conditionally divided air flow into three velocity regions. In the initial region, jet velocity preserves its speed in a form of conus with a base at the nozzle exit.

    Get Price
  • Adjustment of weft yarn stretch in a shed of an air jet ...

    1990-7-27 · This invention relates to a method and apparatus for adjusting weft yarn stretching in a shed of an air jet loom. As is known, air jet looms have been provided with one or more weft yarn feed systems wherein a weft yarn is picked from a weft preparation system into a shed of warp yarns by a main picking nozzle assisted by groups of relay nozzle disposed across the shed. In …

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  • Sized Yarn - an overview

    So, air out side the tube with relatively higher pressure, rushes into the tube. Therefore, if a yarn end is held outside the tube and cut, it would go inside the tube on passing compressed air. Inside, the tube yarn comes under influence of air flow and is untwisted to get parallel arrangement of fibers (Fig. 6.23). On opening of the yarn ends ...

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  • Fibre Cohesion - an overview

    Air-jet spun yarn strength depends very much on inter-fibre friction. Higher inter- fibre cohesion results in reduced end breaks and improved yarn strength. With synthetic fibres, particularly polyester, it is essential that the fibre has a non-depositing finish because such fibre finishes cause undesirable nozzle deposits.

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  • Nozzle Vane - an overview

    The nozzle vane’s leakage flow increases as the nozzle opening is closed small. This fact has been indicated by many researchers [3, 7–9 ]. So only small opening in this paper is used for the analysis of the interaction between nozzle vane’s leakage and downstream rotor. The air flows from vane’s pressure side (convex surface) to ...

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  • DTY Yarn, the Mechanism and Application of Spinning False ...

    2020-11-19 · Air-jet spinning wrap yarn formation. Air-jet spinning passes through the air-jet nozzle to make the strands rotate at a speed of about 2500 r/min and undergo vortex torsion, so that the exposed free fiber ends on the surface of the yarn wrap the yarn body to form a wrapped yarn, as shown in Figure 1. 5 shown.

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  • (PDF) Manufacturing of Air-Textured type yarn without ...

    A model machine has been developed to produce air-jet type bulked yarn without using e air. Purely a mechanical false-twister (Bush-type) is used along with predefined overfeed in the bulking ·

    Get Price
  • Nios II-Based Air-Jet Loom Control System

    2021-8-7 · The air-jet loom is a shuttleless loom that inserts the weft with the airflow’s frictional traction force on the weft yarn. Most air-jet looms today use main and auxiliary nozzles to relay air jetting and weft insertion. Therefore, weft insertion control mainly focuses on controlling the valve solenoid of the main and auxiliary nozzles.

    Get Price
  • Prediction of Strength and Weavability of Blended Spun ...

    In this paper, we report on predicting the strength of polyester/viscose spun yarns made on ring, rotor and air-jet spinning systems. A system has been …

    Get Price
  • Yarn

    In air jet loom, many components have an influence on yarn tension, such as clamp, main nozzle, sub nozzle, brake, and the drum. In this paper, a measurement system for yarn tension experiment which based on a 32-bit Cortex-M3 embedded processor was designed and implemented.

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  • Simulation of Motion of Long Flexible Fibers with ...

    Air-jet loom is a textile machine designed to drive the long fiber using a combination flow of high-pressure air from a main nozzle and a series of assistant nozzles. To make the suggestion of how to make the fiber fly with high efficiency and stability in the jet …

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  • Recent advances and challenges of abrasive jet machining ...

    2018-8-1 · Due to boundary conditions between air jet and stable surroundings, abrasive jet velocity is non-uniform in both radial or axial direction. Li et al. conditionally divided air flow into three velocity regions. In the initial region, jet velocity preserves its speed in a form of conus with a base at the nozzle exit.

    Get Price
  • Process for the production of a crimped continuous ...

    Process and apparatus for producing a crimped continuous multifilament yarn by the sequential steps of air-jet texturizing to form multiple random filamentary loops, immediately pulling out metastable loops formed in the yarn without heating and without stretching or deforming the yarn filaments, next shrinking and heat setting the yarn at a temperature of about 150°-245° C., and …

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  • Sized Yarn - an overview

    So, air out side the tube with relatively higher pressure, rushes into the tube. Therefore, if a yarn end is held outside the tube and cut, it would go inside the tube on passing compressed air. Inside, the tube yarn comes under influence of air flow and is untwisted to get parallel arrangement of fibers (Fig. 6.23). On opening of the yarn ends ...

    Get Price
  • Nozzle Vane - an overview

    Figure 5 shows the distribution of entropy at midspan for small opening. Wake generated by nozzle vanes flows circumferentially and experiences long distance before entering into downstream rotor channel. This long track wake transports provides more time to mixture between wake and surrounding air. Thus wake is weak when it hits at leading edge of blade, and its influence on the …

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  • Aerodynamic continual weft brake - WIT Press

    2014-5-16 · Keywords: air jet weaving, weft brake, technical cloths, numerical flow modelling. 1 Description of the solved problem The air jet weaving is the most productive weaving system, where the weft yarn is transported through the weaving channel by air flow. The system of jet weaving was developed by the foregoer of Textile Machines Research Institute

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  • Non Traditional Manufacturing – Introduction

    2017-8-4 · The jet of abrasive particles is carried by carrier gas or air. The high velocity stream of abrasive is generated by converting the pressure energy of the carrier gas or air to its kinetic energy and hence high velocity jet. The nozzle directs the abrasive jet in a controlled manner onto the work material, so that the distance between the

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  • Aircraft Structures Definitions A - Aerostudents

    2017-7-26 · Nozzle - the exhaust end of the enige where the air jet accelerates P Paint - polymeric material used as coating for corrosion protection or for aesthetic reasons Panel - structural subassembly of skin and stiffening elements Payload - the cargo and people that have to be transported Pitch - rotation around the y axis of the aircraft,

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  • Core Spun Yarn - TEXTILE VALUE CHAIN - Core Spun Yarn

    2020-10-16 · Air jet spinning system; Effect of Process variables in Ring Core-spun yarn properties. Core- sheath ratio: It has been found that decreasing sheath content will increase the strength of the core-spun yarn. Pre- tension to Core material: …

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  • Processes

    Self-excited oscillation pulse jet technology is widely used to clean sediment from oil storage tanks. Its successful application is dependent on jet performance. As the cleaning requirements of the oil industry increase, it is necessary to optimise the structure of self-excited oscillation pulsed jet nozzles (SOPJNs) to optimise cleaning and energy efficiencies.

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  • Weaving Loom Beam For Sale, High Quality Warp Beam

    Warp beam refers to the roller on which the warp yarn is wound in a weaving loom. With abundant experience, we are specialized in manufacturing aluminum beams for warp knitting machine, webbing loom, rapier loom, air jet loom, water jet loom and other textile machineries. Our company has introduced 8000T forging machine and the friction welding ...

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  • Industry News - Shanghai Hywell Fibre Industry company

    Spandex Covered Yarn Features. 1. Air covered yarn (abbreviated as empty bag, English abbreviated as ACY) is to draw the outer fiber filament and spandex yarn through a certain type of nozzle at the same time, and form a rhythmic network point by the regular spray pressure of high-compressed air Yarn. 2.

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  • AIR BLAST AND SHOT BLAST EQUIPMENT - Deutsche Messe

    2017-4-6 · pressure of air from the blast pot into the compressed air stream and transported along the abrasive-jet hose to the blast nozzle for final acceleration. There are several configurations of pressure systems. One-volume and two-volume tanks are used like the most common. Two-volume ones can feed the abrasive smoothly, rebooting the

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  • CN1664198A - Air jet texturing machine for manufacturing ...

    An air texturising machine for the production of fancy yarn comprises: a first godet roller (4, 4') for a core yarn (6), a second godet roller (5, 5') for the fancy yarn (7), an air texturising nozzle (6) for weaving the yarn (6, 7), and a mechanism for modifying the molecular structure of the yarn (6, 7). The molecular structure of the yarn (6, 7) is modified by changing the temperature of ...

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  • Jual Pompa air semi jet pump stainless Shimge Jet 250 G1 ...

    The JET-G1 self priming jet pumps have an automatic jet system. It is versatile and can be used in gardens, well water pumping, etc. This self-priming pump is suitable for the extraction of clean water and non-corrosive chemical liquids. Its performance is reliable and safe, and it is easy to operate. Application Limits Liquid temperature up to +40

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  • Air Texturing and Fabrics - PolySpinTex, Inc.

    Air textured yarns are widely being used in woven, warp knitted and circular knitted fabrics. The preparatory works are very similar to ordinary textured yarns. Warping. Standard Warpers — speed should be reduced to 65 – 75% of normal. Whorl Tension Devices are recommended. 1 – 2% lubricant on yarn in texturing.

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  • Rev. Mod. Phys. 92, 035004 (2020) - Models of polymer ...

    2020-8-18 · Simulation snapshots of the three different cases of an electrospun polymer solution jet with air counterflow. From left to right, the airflow velocity along the unit vector k (collinear with the z direction) is υ air = 0 , − 1000, and − 2000 cm s, respectively. The jet is shaded in the cones, and the nanofibers deposited on the ...

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  • Triboelectric Yarns with Electrospun Functional Polymer ...

    2021-4-14 · Triboelectric generators are excellent candidates for smart textiles applications due to their ability to convert mechanical energy into electrical energy. Such devices can be manufactured into yarns by coating a conductive core with a triboelectric material, ...

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  • Effect of initial pressure of oblique-blowing airflow and ...

    2021-5-13 · The motions were compared with the simulation data and showed that the proposed numerical model can properly replicate the motion of yarn and its points in the airflow field. Each group of yarns with different initial pressures was able to be tucked-in and had an elongation.

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  • Water-Jet Guided Laser Cutting Technology- an Overview ...

    2019-5-3 · Water-jet guided laser cutting technology is a relatively new technology, which utilizes a water jet and laser beam (pulsed Nd: YAG laser) to cut. The technology is able to cut with high precision without blurs. It also produces less heat and pollution at the cutting zone, unlike conventional machining. This article reviews the characteristics of this new technology and its …

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  • Preliminary Development and Engineering Evaluation of a ...

    2010-9-9 · Figure7 shows the nozzles during jet ventilation of artificial lungs; model (b), seen in the figure, performed better than the other models. The nozzle deforms up with the 400 kPa air jet. However, the air jet is still largely directed down. Models (a) and (c) did not perform well and could lead to trachea wall trauma.

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  • Recent advances on the fabrication methods of ...

    2021-4-26 · Yarn-based strain sensor is an emerging candidate for the fabrication of wearable electronic devices. The intrinsic properties of yarn, such as excellent lightweight, flexibility, stitchability, and especially its highly stretchable performance, stand out the yarn-based strain sensor from conventional rigid sensors in detection of human body motions. Recent advances in …

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  • Intelligent Imaging

    2021-8-21 · LaVision was founded in 1989 in Göttingen, Germany. Since its foundation LaVision is the leading supplier of laser imaging systems in research relevant application fields like fluid mechanics (aerodynamics, microfluidics), combustion (automotive, power generation) as well as spray and particle diagnostics (engines, pharma).

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  • Zhi Hua Feng

    Journal of Biomimetics, Biomaterials and Biomedical Engineering Materials Science. Defect and Diffusion Forum

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  • Air nozzle

    EXAIR's new Model 1004SS Back Blow Air Nozzle is designed to deliver the smallest, most-effective airflow for blowing debris and liquids from tiny inside-diameter pipe or hose, channel, bores, holes, internal threads and other internal part features. EXAIR. A simple qualitative test for this is to spray air from a spray gun or air nozzle into ...

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  • WEAVING MACHINES (LOOMS) - Portable Yarn Tester

    2015-12-7 · contemporary air-jet weaving machine. As the weft is inserted continuously without interruption and at an even pull-off speed of only 20-25 m/s, the stress on the yarn is significantly reduced. This points to potential for further performance boost in the future.

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  • Weaving & Weaving Preparation At ITMA 2007

    2008-1-24 · Air-Jet Weaving Machines. Air-jet weaving’s ability to adapt to new markets continued to be demonstrated at ITMA 2007. This is related in part to further improvement of adaptive control systems that control the air speed, and the rate of filling yarn insertion through the shed. Companies with air-jet weaving

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  • Fluidics: the answer to problems of handling hazardous fluids

    2014-5-19 · intersection with characteristic within its segment a to b). Details are in [15, 16]. manufacturing the devices for handling high melting point metals, such as molten steel [17]. The device shown in Figs. 1 and 2 prevents a reverse flow through one of the two parallel branches [8]. It is known (because of its role in

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  • How REPREVE® Is Made

    Source Recycled Waste: Recycled plastic bottles and post-industrial waste (including our own) are collected worldwide. Make the Chip: Waste material is chopped, ground, washed, melted and reformulated into high-quality REPREVE chip. Form the Fiber: Chip is melted into liquid polymer and extruded through tiny openings in a spinneret, creating continuous filaments that form REPREVE …

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  • A core-spun yarn containing a metal wire manufactured by a ...

    2017-10-13 · A core-spun yarn containing an ultrafine copper wire for wearable electronics-oriented applications has been manufactured using a modified vortex spinning system for the first time. The copper wire is fed into the spinning nozzle …

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  • Technology – Low Pressure Cold Spray Technology

    – use of low-temperature compressed air as the working gas medium. – use of a mixture of metal and ceramic particles in deposition, as a rule. – introduction of powder material into the supersonic nozzle after its critical section. The technology …

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  • Futuristic Clothes: Electronic Textiles and Wearable ...

    2020-3-18 · [177-179] An alternative to conventional conductive yarn applications nanofiber patch in the cloth with conductive yarns can be used as a heart rate and electrocardiogram sensor due to its improved adhesion to the skin, which improves the stability of the measurement of the biomedical signals.

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  • Utilization of ultrasonically forced pulsating water jet ...

    2020-8-17 · Ultrasonic pulsating water jet for non-thermal and selective removal of acrylic bone cement is studied. Variation of acoustic chamber length is used for tuning of the ultrasonic system into the resonance regime to gain maximum power transmission. The study investigates the minimal technological conditions such as nozzle traverse speed and supply water pressure required to …

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  • Fibre distribution in air-jet and ring yams

    2013-12-19 · packing density in case of single air-jet yarn in the outermost zone can be explained 011 the basis of the spinning mechanism. Air-jet yarn is made of wrapper fibres wound around a core of fibre flux coming out of front roller. The twisting system has two nozzles. The second nozzle twists the fibre bundle and first

    Get Price
  • Effects of Air and Yarn Characteristics in Air-Jet Filling ...

    In air jet looms, the weft yarn is transported from the prewinder to the reed by means of an air flow. In this work, the motion of a yarn inside a main nozzle during the first stage of an ...

    Get Price
  • Structure and working principle of air-jet loom weft ...

    2021-5-18 · Finally, weft yarn enters into the main nozzle and rests there. Air- jet loom weft insertion cycle: When the reed moves toward the back dead center position and the dwell period of the sley gets begins, the weft insertion cycle begins. First of all, the weft brake of weft accumulator gets opened. Now the air supply of main nozzle gets switched on.

    Get Price
  • E ect of nozzle geometry on air-jet texturing performance

    2017-3-10 · The air-jet texturing process is widely known for its ability to produce spun-like synthetic continuous filament yarns. Structural modification is achieved by contact of the continuous feed yarn with a supersonic air stream delivered by a nozzle. The details of the flow patterns are influenced by the geometry of the nozzle. This

    Get Price
  • Nios II-Based Air-Jet Loom Control System

    2021-8-20 · The air-jet loom is a shuttleless loom that inserts the weft with the airflow’s frictional traction force on the weft yarn. Most air-jet looms today use main and auxiliary nozzles to relay air jetting and weft insertion. Therefore, weft insertion control mainly focuses on controlling the valve solenoid of the main and auxiliary nozzles.

    Get Price
  • (PDF) Manufacturing of Air-Textured type yarn without ...

    A model machine has been developed to produce air-jet type bulked yarn without using e air. Purely a mechanical false-twister (Bush-type) is used along with predefined overfeed in the bulking ·

    Get Price
  • 31—AN ANALYSIS OF THE AIR-JET YARN-TEXTURING

    2018-6-16 · 31—AN ANALYSIS OF THE AIR-JET YARN-TEXTURING PROCESS PART VI: THE MECHANISM OF LOOP FORMATION* By M. ACAR, R. K. TURTON, and G. R. WRAY After a brief summary of the findings and conclusions of the previously reported investigations on the air-jet texturing process, a mechanism of loop formation is postuliited. The factors affecting loop

    Get Price
  • Method for air-bubble texturing endless filament yarn ...

    A method and machine for treating yarn may include feeding the yarn through both a heat treatment and an air jet texturing nozzle. The texturing nozzle may be supplied with compressed air, producing an air jet with a speed greater than Mach 1 in the yarn channel. The heat treatment may be performed before and/or after feeding the yarn through the texturing nozzle.

    Get Price
  • Numerical simulation of the yarn formation process in ...

    Article. Numerical simulation of the yarn formation process in Rieter air jet spinning. September 2016; Journal of the Textile Institute 108(3):1-8

    Get Price
  • Recent advances and challenges of abrasive jet machining ...

    2018-8-1 · Due to boundary conditions between air jet and stable surroundings, abrasive jet velocity is non-uniform in both radial or axial direction. Li et al. conditionally divided air flow into three velocity regions. In the initial region, jet velocity preserves its speed in a form of conus with a base at the nozzle exit.

    Get Price
  • DESIGN OF A BLADELESS WIND TURBINE - IJSDR

    2020-8-16 · The air inlet is designed in such a way that the air comes in and hits the disc tangentially to convert the pressure energy to the kinetic energy. The inlet port is designed in such a way that the efficiency in maximum. It has been found that the losses is increased when the air enters axially towards the disc.

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  • International Journal of Modeling, Simulation, and ...

    Besides, when the deflection angle of tangential inlet increases from 0 ∘ to 15 ∘, the swirl strength of gas–liquid two-phase in the nozzle with the deflection angle of tangential inlet of 10 ∘ is the largest, and the mean diameter of air core and spray cone angle is 3.04 mm and 30.7 ∘, respectively.

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  • USER MANUAL - vvs-eksperten.dk

    2021-6-7 · 2. A self-priming pump will start only when its pump body is filled with water and it is unnecessary to fill the inlet pipe with water; in case of a non-self-priming pump, both its body and inlet pipe shall be filled with water and air shall be drained completely. 3.

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  • Google Translate

    Google's free service instantly translates words, phrases, and web pages between English and over 100 other languages.

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  • Solution blow spinning of polymer/nanocomposite micro ...

    2019-10-4 · The formation of rough, smooth, or grooved surfaces was attributed to the interplay of the evaporation process and the velocity (mis)match between polymer solution jet and its surrounding air stream.

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  • Masterclass: Textile-based air distribution Part 35

    2008-11-1 · Directional jet nozzle ducts The Low Impulse option is only suited to cooling, ventilation and tempered air supply, since the supply air moves into the room space in accordance with its own density relative to that of the room air. The cooler the temperature of air the heavier it becomes and, conversely the warm air …

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  • High-pressure jetcutting. - Free Online Library

    1992-6-1 · The jet exiting the nozzle through the air under an outflow pressure exceeding 50 MPa is supersonic, that is, the velocity exceeds 332 meters per second. The action of the jet (as an external load) with such velocity on the material must be considered as an impact.

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  • (PDF) LITERATURE REVIEW ON TURNING OPERATIONS

    LITERATURE REVIEW ON TURNING OPERATIONS Dr. Osama Mohammed Elmardi Suleiman Khayal Department of Mechanical Engineering, Faculty of Engineering and Technology, Nile Valley University, Atbara – Sudan E – mail address: [email protected] Introduction Turning operation is widely used in workshop practice for applications carried out in conventional …

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  • Humboldt Wedag India Pvt. Ltd, New Delhi - Service ...

    Sharing the double-pressure primary air system and the sandwich flame concept, the main design feature is the adjustable jet nozzle system. This adjustment allows a more precise flame setting than conventional burners without adjustable nozzles. Focus on maintenance and service time

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  • Aircraft Engines and Systems Flashcards

    The airflow is ducted to individual combustion cans that are arranged around the circumference of the burner section. Each burner can contains it own fuel nozzle, burner liber and casing. Primary air introduced at the nozzle supports combustion, while secondary air flow through, between, and around the liner and burner case to provide cooling.

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