Effect of electromagnetic treatment of viscose on stability of the spinning process and quality of technical yarn

1990 ◽  
Vol 21 (4) ◽  
pp. 327-328
Author(s):  
K. A. Malyshevskaya ◽  
O. P. Laletina ◽  
N. A. Mazur ◽  
I. V. Afanas'ev
Keyword(s):  
Electromagnetic Treatment ◽  
Technical Yarn ◽  
Spinning Process

The Effect of the Humidification Treatment of the Roving on the Quality of the Hemp/Cotton Blended Yarn

2010 ◽  
Vol 143-144 ◽  
pp. 1322-1327
Author(s):  
Zhi Li ◽  
Ya Bin Li ◽  
Hua Zhang ◽  
Xiao Ting Wang
Keyword(s):  
Blended Yarn ◽  
Spinning Process

A humidification approach was employed by using spraying mist on the roving before the back rollers of the spinning frame to improve the quality of the hemp/cotton blended yarn. The yarn performance after was investigated. The investigation showed that the evenness, hairiness, tenacity of the yarn was improved by using the humidification technique. When the humidification reached 250mL/h, the spinning process was adversely affected and quality of yarn decreased.

Optimization of Manufacturing Parameters for Melt Spun Yarns Using Taguchi Method

2014 ◽  
Vol 556-562 ◽  
pp. 4264-4267
Author(s):  
Shu Wen Wang ◽  
Te Li Su
Keyword(s):  
Taguchi Method ◽  
Melt Spinning ◽  
Parameter Design ◽  
Controllable Factors ◽  
Melt Spun ◽  
Spun Yarns ◽  
Spinning Process ◽  
Polypropylene Melt ◽  
Manufacturing Parameters

In melt spinning process, evenness of polypropylene melt spun yarns affects the appearance, hairiness, strength and productivity of yarns, as well as product production and profits, causing rejection due to nonconformity. The research is to find optimal manufacturing parameters of melt spun yarns. Firstly, to proceed the parameter design by Taguchi method, then to select a manufacturing parameter which will affect the quality of melt spun yarns as controllable factors. Also to choose a suitable orthogonal arrays. Meanwhile, according to variation of analysis, to decide optimal manufacturing parameters of melt spun yarns and its remarkable factor. Finally, using 95% confidence interval to proof the experiment’s reliability and repeatability.

scholarly journals Improving the quality of recycled water by pulsed electromagnetic treatment

2021 ◽  
Vol 3 (2) ◽  
pp. 76-83
Author(s):  
E. E. Ergozhin ◽  
T. K. Chalov ◽  
T. V. Kovrigina ◽  
Ye. A. Melnikov ◽  
K. Kh. Khakimbolatova
Keyword(s):  
Reverse Osmosis ◽  
Technical Specification ◽  
Water Supply Systems ◽  
Recycled Water ◽  
Makeup Water ◽  
Oil Refineries ◽  
Industrial Enterprises ◽  
Electromagnetic Treatment ◽  
Pulsed Electromagnetic

The relevance of this work is of exceptional importance and is widely used in technological processes at most industrial enterprises, including oil refineries. Industrial enterprises of the oil industry are subject to strict controls on environmental protection, water consumption, and the quantity and quality of wastewater discharged. This article presents data on the treatment of recycled water before the clarification section by reverse osmosis using an electromagnetic treatment device. The authors made a pilot reverse osmosis unit with a capacity of 0.370 m3/h, the permeate output (for purified water) was 0.3 m3/h, the concentrate discharge was 0.07 m3/h. The test bench operates in a closed circuit, i.e. the permeate and brine are returned to the original container. The technological scheme of purification to the standards that meet the requirements of makeup water, as well as the technical specification for the design of industrial recycling water supply systems, has been developed.

Influence of Angle of Inclination of the Crucible on Puddle Formation and Ribbon Thickness during Planar Flow Melt Spinning Process

2018 ◽  
Vol 1 (1) ◽  
pp. 279-285 ◽  
Author(s):  
Sowjanya Madireddi
Keyword(s):  
Melt Spinning ◽  
Ribbon Thickness ◽  
Wheel Surface ◽  
Planar Flow ◽  
Ideal Position ◽  
Quality Product ◽  
Spinning Process ◽  
Transformer Core ◽  
The Ideal

Planar flow melt spinning process is widely used to manufacture amorphous ribbons for transformer core applications. The position of the crucible above cooling wheel for melt ejection in the realistic production conditions is crucial to producing the higher quality product. The quality of the product depends on the thickness and defect-free state of the ribbon. Puddle formation plays a significant role in the quality of the ribbon. As the experimental investigation is expensive and time consuming a numerical model is used to investigate the effect of clockwise and counter-clockwise inclination of the crucible on puddle formation and ribbon thickness. The thickness increases by 62.8 % and 111.5% with an augment in inclination angle from 0o to 5.4o in counter-clockwise and clockwise directions respectively. Limiting angle of inclination to avoid non-contact zone or cavity in the puddle at the nozzle wall is around 2o to 3o to obtain a higher quality ribbon. This limit can increase up to 3o to 4o for higher wheel speeds. The ideal position of the crucible is perpendicular to the wheel surface. Otherwise, the limiting angle of inclination to produce higher quality ribbon is, counter-clockwise with an optimum inclination of not more than 2 degrees.

Law of Metal Flow of Thin-Walled Conical Part With Variable Section During Spinning

2020 ◽  
Author(s):  
Shu Xuedao ◽  
Xia Yingxiang ◽  
Zhu Ying ◽  
Li Zixuan ◽  
Ye Bohai
Keyword(s):  
Metal Flow ◽  
Conical Part ◽  
Forming Process ◽  
Finite Element Software ◽  
Axial Tensile ◽  
Variable Section ◽  
Spinning Process ◽  
Thin Walled ◽  
Forming Defects

Abstract During the spinning process of the variable-section thin-walled conical parts, the metal flow law is relatively complicated and the flange is prone to be unstable, which resulting in wrinkling and other defects. In this paper, the variable-section conical part of superalloy GH1140 is taken as the research object. The spinning forming process is numerically simulated by using Simufact Finite Element software and the metal flow in each stage of the forming process is analyzed. The flow velocity shows an annular distribution as a whole. The metal near the center of the circle flows more slowly, and the metal far from the circular flange flows more quickly. In the direction of thickness, the velocity of metal flow decreases gradually. Under the feeding action of the roller, the metal in front of the roller is subjected to axial tensile stress, tangential and radial compressive stress, resulting in a strain state of one-way tension and two-way compression. The metal moves along the negative direction of the rotary wheel feed, resulting in the increase of the sheet wall thickness. The correctness of the model in this paper is further verified by spinning experiments. The research results provide a theoretical basis for analyzing the mechanism of forming defects and improving the quality of spinning forming of conical thin-walled parts with variable sections.

Investigation of Movable Balloon Controller System on a Ring Spinning Frame

2011 ◽  
Vol 175-176 ◽  
pp. 474-479
Author(s):  
Ju Sheng Qiu ◽  
Zhi Li Zhong ◽  
Huan Guo ◽  
Xun Gai Wang
Keyword(s):  
Displacement Sensor ◽  
Step Motor ◽  
Ring Spinning ◽  
Yarn Tension ◽  
Spun Yarns ◽  
The Status ◽  
Spinning Process ◽  
Linear Module ◽  
High Power Consumption

Compared to other spinning system, the ring spinning process has been used to produce higher quality yarns, but with a much lower spinning efficiency, resulted from the relatively high spinning tension that leads to increased yarn breakage rates and makes high power consumption. Thus, depressing yarn tension is essential to change the status. In this paper, we design a movable balloon controller system to reduce yarn tension. The system is automatic, composed of powder switch, touch screen, PLC (Programmable Logic Controller), pulling-thread displacement sensor, controller of step motor, step motor and linear module. PLC, the core of the system, controls the position of the balloon controller by a series of programs. Then yarn tension was tested while spinning with movable balloon control ring, fixed balloon control ring and no balloon control ring, respectively. The result shows that the yarn tension can be depressed indeed by equipping this movable balloon controller system to some extent. Additionally, we find that the number of hairiness of ring spun yarns with this system can be reduced to some extent, while yarn tensile properties are not as sensitive to be worse. It is significant to cut down ends-down rate, improve the quality of ring spun yarns, the spinning efficiency as well as the energy efficiency of ring spinning.

scholarly journals Establishment and Analysis of Simulation Model for Single-pass 20 Steel Spinning

2021 ◽  
Vol 2076 (1) ◽  
pp. 012068
Author(s):  
Yu Yang ◽  
Jiao Yang
Keyword(s):  
Simulation Model ◽  
Process Parameters ◽  
Computer Technology ◽  
Deformation Process ◽  
Scientific Basis ◽  
Element Simulation ◽  
Spinning Process ◽  
Cylindrical Parts ◽  
Metal Deformation

Abstract With the continuous advancement of computer technology, finite element simulation has been gradually applied to the analysis of plastic deformation of metals. If a strong spinning simulation model of 20 steel cylindrical parts can be established to effectively simulate the stress, strain and surface quality of the metal deformation process, it can provide a scientific basis for the setting of spinning process parameters, thus reducing the number of spinning process experiments to determine spinning process parameters.

The Effects of Bale-opening on the Quality of Intermediates in the Spinning Process

2000 ◽  
Vol 91 (1) ◽  
pp. 151-164
Author(s):  
M. Nakamura ◽  
M. Nakajima ◽  
T. Matsuo
Keyword(s):  
Spinning Process

Raising the quality of technical yarn by improving the state of KV-III-250KA twisting and stretching machines

1990 ◽  
Vol 21 (5) ◽  
pp. 446-448
Author(s):  
F. I. Vavilova ◽  
�. M. Mirzoev ◽  
N. M. Borel
Keyword(s):  
The State ◽  
Technical Yarn
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