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2014-9-17 · The effect of nozzle size on process and yarn parameters has been studied and compared with air-jet textured yarns. The results show that spun-like textured yarn manufactured using steam has lower loop instability and higher tensile properties than air …
Get PriceEffect of nozzle size on texturing performance: comparison between air-jet and steam-jet texturing Abstract The objectives of this research work were to investigate the use of steam in order to
Get Price2018-2-17 · In order to facilitate the research, an air-jet texturing nozzle with a rectangular cross section has been developed. The texturing performance of the nozzles is assessed by means of process observations and on-line measurement of stabilizing zone tension, and also by measuring the in creased linear density of the yams on textured yarn samples.
Get PriceAbstract 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 ...
Get Price2017-8-29 · was modified to supply either air or steam to the texturing nozzle. Using an identical nozzle, both air-jet and steam-jet textured yarns were manufactured. The influence of effect-yarn parameters on the steam-jet texturing performance has been studied. Furthermore, steam-jet texturing was compared with air-jet texturing in terms of
Get Price2014-7-2 · An existing air-jet texturing machine was modified to supply either air or steam to the texturing nozzle. Using an identical nozzle, both air-jet and steam-jet textured yarns were manufactured. The influence of effect-yarn parameters on the steam-jet texturing performance …
Get PriceThe texturing performance of the nozzles is assessed by means of process observations and on-line measurement of stabilizing zone tension, and also by measuring the in creased linear density of ...
Get Price2.2.4.4 Effects of other elements Although it is claimed that the baffle arrangement (also known as impact element) at the nozzle exit is believed to improve the process stability and hence the yarn quality in the texturing of certain fibers, it is unlikely to have significant effects on the flow inside texturing nozzles, since any such element ...
Get PriceThe effects of surface texture on the tribological properties of slideways were investigated experimentally. The authors designed an experimental apparatus for …
Get Price2002-6-1 · A new cost-effective nozzle that can produce good quality commingled yarns at low air pressure is introduced. 3D CFD simulation and experimental studies are conducted to investigate the effect of ...
Get Price2014-9-17 · An existing air-jet texturing machine was modified to supply either air or steam to the texturing nozzle. 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 textured yarns.
Get Priceand twist effects. The air flow in the texturing nozzle can be described by the conservation equations for mass, momentum and energy, combined with the ideal gas equation. This leads to the compressible Navier-Stokes equations. In the nozzle, the string of filaments is represented as a cylindrical dome, in order to simplify the geometry.
Get PriceEffect of nozzle size on texturing performance: comparison between air-jet and steam-jet texturing. The Journal of The Textile Institute, 106(10), 1051-1058. [17] Wickramasinghe, G. L. D., & Foster, P. W. (2016). Effects of core-yarn overfeed on texturing performance: comparison between air-jet and steam-jet texturing.
Get Price2019-10-1 · Effect of nozzle size on texturing performance: comparison between air-jet and steam-jet texturing, The Journal of the Textile Institute. (Published online 17 Sep 2014). DOI: 10.1080/00405000.2014.960651 14. Wickramasinghe G.L.D., Foster P.W. (2014). Investigation of the influence of effect-
Get Price2.2.4.4 Effects of other elements Although it is claimed that the baffle arrangement (also known as impact element) at the nozzle exit is believed to improve the process stability and hence the yarn quality in the texturing of certain fibers, it is unlikely to have significant effects on the flow inside texturing nozzles, since any such element ...
Get PriceBock and Luenenschloss conjectured that the effect on Sengupta et al. [12] reviewed the texturing mechanism put texturing arises from the susceptibility of slack yarns inside forward by a number of researchers up to 1990 and con- the nozzle to the …
Get Price2021-1-20 · The effect of surface texturing on the convergent journal bearing using CFD model by finite volume method based on Navier-Stokes was examined by Tauviqirriahman et.al [3]. In particular, the investigation is focused on the generation of the …
Get Price2021-7-1 · Surface texturing has been proved to be an effective way to increase the tribological performance of textured bioimplants. • The COF of optimized pattern design shows a 51.9% reduction than that of untextured samples. • Hydrodynamic pressure has little effect on the increase of tribological performance. •
Get Price2019-10-15 · The properties of ceramics can be improved by controlling the microstructure through texturing ceramics in a strong magnetic field. Fabricating dense boron carbide (B 4 C) requires high temperature sintering, therefore sintering additives are often used in order to densify B 4 C ceramics at lower temperatures. However, combined effect of texturing and sintering additives …
Get Price2020-8-1 · Yet, measurements demonstrate that the effect of nozzle angle on channel width is negligible and the channel width is still proportional to air pressure even at 30° . Download : Download high-res image (158KB) Download : Download full-size image; Fig. 10. Influence of nozzle angle on channel width (SOD = 3 d N).
Get Price2018-6-11 · Effect of nozzle size on texturing performance: comparison between air-jet and steam-jet texturing. The Journal of The Textile Institute, 106(10), 1051-1058. Search in Google Scholar [17] Wickramasinghe, G. L. D., & Foster, P. W. (2016). Effects of core-yarn overfeed on texturing performance: comparison between air-jet and steam-jet texturing.
Get Price2015-4-2 · (2016). Effects of core-yarn overfeed on texturing performance: comparison between air-jet and steam-jet texturing. The Journal of The Textile Institute: Vol. 107, No. 3, pp. 291-299.
Get PriceEffect of nozzle size on texturing performance: comparison between air-jet and steam-jet texturing, The Journal of the Textile Institute. Vol. 106 Issue 10, pp. 1051-1058; Wickramasinghe, G.L.D.,& Wickramasinghe, V. (2011). Perceived organisational support, Job involvement, and turn over intention in lean production in Sri Lanka.
Get Price2014-12-14 · 5th International & 26 th All India Manufacturing Technology, Design and Research Conference (AIMTDR 2014) December 12 th –14 th, 2014, IIT Guwahati, Assam, India 619-1 Experimental Investigations on CO 2 Laser Micro Texturing on Near- Titanium Alloy (IMI 834) M. Ravi Sankar 1*, S. Tarun Kumar 1, Kishor Kumar Gajrani 1, J. Swaminathan 2,U. S. Dixit 1 1* …
Get Price2019-9-18 · As shown in Fig. 1, the electrolyte (25-30 g/L Na 2 CO 3 dissolved in deionized water) was pumped to the nozzle and uniformly sprayed onto the sample surface. The temperature of the electrolyte was kept at 35-40 °C with the chiller. The gap between the nozzle and sample surface was set to be about 6-8 mm.
Get Price2020-1-29 · increased wear resistance. Hi/Performance nozzles last 3 to 5 times longer than conventional nozzles. Hi/Performance nozzles are designed to compliment our AccuFlo® and MicroBlaster® model blasters in manual and automated applications. 30% More Focus The design of the Hi/Performance nozzle reduces overspray by 30%.
Get Price2018-11-1 · The non-vertical velocity represents the instability of the flow field. The non-vertical velocity in the nozzle is marked by the red circle, and the size and density of the circle represent the distribution of the non-vertical velocity. As the length of the straight line increases, the effect of nozzle shrinkage on the jet is gradually reduced.
Get PriceSeveral characteristics impact the rate of integration. MicroBlasting controls two of these characteristics: Ra, the size of the peaks and valleys, and the developed surface, or the amount of surface area created through the texturing process. Automation delivers ideal results for surface texturing …
Get Price2021-6-28 · Directed energy deposition (DED) is one of the most used additive manufacturing processes for the fabrication of 3D-metal components. However, surface quality is not always within the limits required for most applications. Post-processing operations can overcome such a limitation. Laser polishing (LP) can be performed with the use of a same energy source and same …
Get Price2021-5-31 · On most performance measures, the results showed that narrowing the thread profiles with 1/16th of the pitch has only an effect on specimens modeled with 10 layers per pitch. Popescu et al. [ 52 ] reviewed existing articles on the effect of FDM printer parameters on the mechanical properties of polymer samples.
Get Price2020-4-22 · nozzle with an expanded, parallel laser beam and projecting the resulting image on a screen. Standard texts such as Shapiro [11] explain the technique in more detail. The shadowgraphs were recorded with a 35 mm camera. Texturing Trials . In order to compare the performance of the various nozzles, we ran a series of texturing trials
Get Price2015-4-2 · (2016). Effects of core-yarn overfeed on texturing performance: comparison between air-jet and steam-jet texturing. The Journal of The Textile Institute: Vol. 107, No. 3, pp. 291-299.
Get PriceEffect of nozzle size on texturing performance: comparison between air-jet and steam-jet texturing, The Journal of the Textile Institute. Vol. 106 Issue 10, pp. 1051-1058; Wickramasinghe, G.L.D.,& Wickramasinghe, V. (2011). Perceived organisational support, Job involvement, and turn over intention in lean production in Sri Lanka.
Get Price2019-9-18 · As shown in Fig. 1, the electrolyte (25-30 g/L Na 2 CO 3 dissolved in deionized water) was pumped to the nozzle and uniformly sprayed onto the sample surface. The temperature of the electrolyte was kept at 35-40 °C with the chiller. The gap between the nozzle and sample surface was set to be about 6-8 mm.
Get Price2015-1-6 · textured heat setting on textured yarn properties. An existing air-jet texturing machine was modified to supply and control both compressed air and high pressure steam to the texturing nozzle. Effect of post textured heat setting on loop instability, shrinkage, strength, tenacity, elongation and linear density of the
Get Price2020-1-29 · increased wear resistance. Hi/Performance nozzles last 3 to 5 times longer than conventional nozzles. Hi/Performance nozzles are designed to compliment our AccuFlo® and MicroBlaster® model blasters in manual and automated applications. 30% More Focus The design of the Hi/Performance nozzle reduces overspray by 30%.
Get Price2020-1-10 · loss. In air-jet texturing, changing the core yarn overfeed has a direct influence on the strength of the textured yarn while the effect yarn overfeed determines the size of the loops. Core and effect yarn overfeeds usually range from 2 to 15% and 15 to 150%, respectively [4]. A typical air-jet textured yarn for conventional
Get PriceAir Jet Nozzle Dty For Texturizing Machine , Find Complete Details about Air Jet Nozzle Dty For Texturizing Machine,Air Jet Nozzle Dty For Texturizing Machine,Yarn Spinning Machine,Yarn Winding Machine from Supplier or Manufacturer-Taian Jiamei Machinery Technology Co., Ltd.
Get Price2021-5-31 · On most performance measures, the results showed that narrowing the thread profiles with 1/16th of the pitch has only an effect on specimens modeled with 10 layers per pitch. Popescu et al. [ 52 ] reviewed existing articles on the effect of FDM printer parameters on the mechanical properties of polymer samples.
Get Price2019-10-30 · An ejection aperture nozzle is the essential part for all microdrop generation techniques. The diameter size, the flow channel geometry, and fluid impedance are the key factors affecting the ejection capacity. A novel low-cost fabrication method of microglass nozzle involving four steps is developed in this work.
Get Price2014-5-13 · re-texturing. The geological factors affecting the performance of aggregate materials are mainly petrographic and related to the mineral content of the rocks and the petrofabric texture. It may be anticipated that an aggregate’s grain size, bonding and mineralogy will influence the manner in which it responds to
Get Price2020-1-10 · loss. In air-jet texturing, changing the core yarn overfeed has a direct influence on the strength of the textured yarn while the effect yarn overfeed determines the size of the loops. Core and effect yarn overfeeds usually range from 2 to 15% and 15 to 150%, respectively [4]. A typical air-jet textured yarn for conventional
Get Price2019-1-21 · Present investigation is focused to study the impact of different lubricating environments using pure canola oil and graphene mixed in canola oil, on the performance of uncoated carbide textured tools in minimum quantity lubrication (MQL) turning of AISI 4340 hardened steel. The influence of using twin jet and single jet was also studied under MQL. The turning performance …
Get PriceUnlike traditional sandblasting, MicroBlasting uses very fine abrasive media and a miniature nozzle to produce a controllable abrasive jet that can target and remove microns of material. The result is a reliable and repeatable method for deburring, texturing…
Get Price2019-3-29 · Airjet texturing – detailed discussion of process. Different types of variables and their effect on properties of yarn. Recent developments of airjet texturing machine, jets and process. Methods of assessing and evaluation of textured yarns. Hi-bulk yarns – especially acrylic. Chemical texturing and texturing of staple yarns. Group A
Get Price2019-12-12 · The wear on mating surfaces is a serious problem, which limits the performance, stability, durability, and reliability of mechanical seals. In recent years, surface texturing has become one of the most attractive techniques used to ameliorate the tribological and sealing properties of mechanical seals [].Spiral grooves [] or micro-dimples [] on the sealing faces of dynamic and …
Get Price2020-11-11 · Effect of stabilizing heat treatment on laser micro-/nano-textured copper surface microstructure and composition. Firstly, nanosecond laser micro-texturing was used to obtain the hydrophilic copper surface. After further heat treatment, the micro-textured surface exhibited superhydrophobic characteristics with a hydrophobic angle of 161.3°.
Get PriceThe micro electrical discharge machining is a novel technology applicable for the production of geometries which cannot be made by any other technologies assuming the material is electrically conductive. The machining of electrically conductive ceramics becomes possible by this way. Hole machining into these materials has high importance, however the machining parameters for the …
Get Price2008-1-1 · Read 'Effect of shot peening parameters on the surface integrity of 316L material, International Journal of Machining and Machinability of Materials' on DeepDyve, the largest online rental service for scholarly research with thousands of …
Get PriceDespite the apparent beneficial effect of annihilation or scale down of inclusions, and given the ubiquity of oxides in AM metallic materials, there is a need for better mechanistic understanding of the scaling effect of nonmetallic inclusion size, shape, and chemical nature on corrosion behavior within the context of powder-based AM.
Get Price2015-4-2 · (2016). Effects of core-yarn overfeed on texturing performance: comparison between air-jet and steam-jet texturing. The Journal of The Textile Institute: Vol. 107, No. 3, pp. 291-299.
Get Pricealtering the performance charac- teristics of the balloon. Similar to altering the morphol- pressure and ultrasonic nozzles the drug coat texture is necessary to meet the requirements of individual company approach- es to drug-coated balloons. Ultrasonic spray provides that versatility to take advantage of what texturing has to offer.
Get Price2018-10-30 · texturing was observed in their experiments. In a subse-quent work [10, 11], they proposed a design of partial laser surface texturing for piston rings where textures were fabricated on only a portion of the ring face and evaluated its effect on the friction reduction. The comparison of frictional performance was made between cylindrical shape
Get Price2021-8-13 · Laser machining has long been used in medical device manufacturing to create small sub-components with extremely fine features. More advanced manufacturers are now using their experience with CNC laser systems to refine techniques and processes for laser surface texturing. Laser texturing provides significant improvements over micro-abrasive blasting, but requires …
Get Price2019-3-11 · framework, nozzle and pulsed current power supply. A copper rod was placed in the anode chamber as the anode, and 30CrMnSi stainless steel, with a size of 100 mm×20 mm×2 mm, was used as the matrix material. The samples were polished using various grits of sandpaper and cleaned by soaking in distilled water and acetone for 5 minutes.
Get Price2021-4-13 · › Effect of face texturing on mechanical seals - Lassad AMAMI, Technical Center of Mechanical Industries 11:10 - 11:30 › Influence of the position, shape and number of journal surface scratches on the performance of a two-lobe journal bearing - comparison between experimental data and numerical results - Anh VO, Institut Pprime
Get PriceA process for improving the uniformity of yarn finish application on the individual filaments of a rapidly advancing synthetic continuous monofilament, bonded multi-filament, multi-filament hosiery, textile, technical and industrial yarns includes imparting a pneumatic false twist to the advancing yarn having a wet finish thereon while the yarn is under a tension allowing the rapid …
Get PriceIn this study, a liquid metal is directly printed on various types of surfaces using an automated dispensing system. A particular class of liquid metals called eutectic gallium–indium (Ga: 75.5% In: 24.5% by weight ratio) was chosen and printed on flat, inclined (20°, 30°, 40°, and 50°), and curved ( = 0.02, 0.03, 0.04, and 0.05 mm −1) surfaces.
Get PriceSolvent casting and particulate leaching are limited in creating coating thickness (0.5–2 mm), facilitate minimal inter-pore connectivity and surface texturing, and control porogen size rather than feature minimum wall-thickness. These techniques are disadvantageous for pre-implantation sterilisation and post-implantation tissue ingrowth.
Get Price2014-5-13 · re-texturing. The geological factors affecting the performance of aggregate materials are mainly petrographic and related to the mineral content of the rocks and the petrofabric texture. It may be anticipated that an aggregate’s grain size, bonding and mineralogy will influence the manner in which it responds to
Get Price2018-6-22 · The effect of nozzle diameter on bead morphology was explored by depositing single-layer samples with needles of 25, 30, and 33 gauge with inner diameters of 260, 159, and 108 μm, respectively. A 1.5 wt % PEO in water solution was used; samples were collected at 100 mm/s.
Get Price2016-2-28 · Effect of surface texturing on hydrodynamic performance of journal bearings: Author (s): Shahab Hamdavi, H. H. Ya and TVVLN Rao: Abstract: The request to use hydrodynamic journal bearings in different industries consisting high speed and high load are commonly demanded. The necessary of improving its performance is a significant objective.
Get Price2015-10-6 · nozzle n Nozzles are spaced on nominal 2'-0' centers n75' and 2.5' orifice diameters 1.8 available The Marley NX nozzle is used only on splash-fill crossflow towers where objects in the water supply create blockage in smaller nozzles. NX nozzles are injection-molded, high-impact black polypropylene. Each nozzle is a single assembly with no ...
Get Price2019-3-29 · Airjet texturing – detailed discussion of process. Different types of variables and their effect on properties of yarn. Recent developments of airjet texturing machine, jets and process. Methods of assessing and evaluation of textured yarns. Hi-bulk yarns – especially acrylic. Chemical texturing and texturing of staple yarns. Group A
Get Price1994-10-12 · The passageway 32 and nozzle 34 can have their dimensions and configuration optimized for proper performance, and the manner in which this is done is also known in the prior art. In the present invention, the nozzle member 28 is provided with a counterbore 36 having a moderately enlarged diameter, relative to the diameter of the nozzle opening 34.
Get Price2018-8-1 · Results. The Advance Lathe was set with the parameters listed above resulting in removal rate of 15 nanometers per pass of the nozzle. The sample was blasted until the channels reached a depth of 9 µm. Because the part blasted in this case study was so small, we did not have to vary the nozzle speed as the nozzle …
Get PriceMicro abrasive blasting provides precision and control that is used in a number of different applications. A few of these applications are conformal coating removal, refined machining work, custom tooling work such as deburring, surface preparation (for example texturing…
Get Price2020-8-5 · The formula for force (C) from a hydraulic cylinder is the Differential Area (D) multiplied by the Hydraulic (H) core pull circuit system machine pressure. C = D x H. The differential Area for extend (D e) is the area of the cylinder bore D e = (3.14 x B 2 )/4 where B is the bore diameter.
Get Price2021-5-6 · Andy Fordham is a visual effects artist based in Essex, UK. His studio, East Effects, specialises in the design and creation of bespoke props, costumes, and characters for the entertainment industry.Maybe you’ve seen Andy’s work on screen before – his clients include the BBC, 20th Century Fox, Netflix, Sky, and lots of other household entertainment names.
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