Journal of Textile Research ›› 2020, Vol. 41 ›› Issue (12): 151-156.doi: 10.13475/j.fzxb.20200306706

• Machinery & Accessories • Previous Articles     Next Articles

Effect of nickel-phosphorus-nano-SiC-polytetrafluoroethylene electroless composite plating on lifetime of traveller for yarn spinning

MA Shasha1, WANG Junbo1(), LUO Qian1, SI Fang1, YANG Min'ge1, CHEN Ningbo2, ZHANG Xiaofeng2, LI Bo1   

  1. 1. Xi'an Polytechnic University, Xi'an, Shaanxi 710048, China
    2. Xianyang Xinhe Textile Machinery Equipment Co., Ltd., Xianyang, Shaanxi 712000, China
  • Received:2020-03-25 Revised:2020-06-29 Online:2020-12-15 Published:2020-12-23
  • Contact: WANG Junbo E-mail:wangjunbo@xpu.edu.cn

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Abstract:

In order to study and analyze the influence of different surface treatment processes on the performance of the traveler for yarn spinning and further improve the service life of the traveler, electroless plating was employed using a plating solution fabricated from nickel-phosphorus-nano-SiC-polytetrafluoroethylene (Ni-P-SiC-PTFE) to coat the traveller. The microstructure and performance of the traveler and the coating were characterized using scanning electron microscope, X-ray energy spectrometer and experimented on the ring spinning machine. The results show that compared to the Ni-P chemically coated traveler, the grains of Ni-P-SiC-PTFE chemical composite plated travellers are refined and uniform in thickness, and the coating is well attached to the substrate. It is found that the thickness of the coating is doubled, and the hardness of the coating is increased by 24.5%. After trial spinning using Ni-P-SiC-PTFE chemical composite plated travellers, yarn faults such as the yarn thin section, thick spots and neps are reduced by 40%, 18.8% and 10.3% respectively, and the breakage rate caused by the hanging of the traveler is reduced by 50%, and the wear of the traveler is reduced by 31.6%, demonstrating superiority over the Ni-P electroless traveller.

Key words: nano-SiC, electroless composite plating, nickel-phosphorus-SiC-polytetrafluoroethylene, rate of hairiness, abrasion resistance, traveller

CLC Number: 

  • TS112.8

Fig.1

Surface images of coatings(×2 000). (a) Ni-P-SiC-PTFE electroless composite plating; (b)Ni-P electroless plating"

Fig.2

Surface morphology of Ni-P-SiC-PTFE electroless composite plating after corrosion(×2 000)"

Fig.3

EDS diagrams of Ni-P-SiC-PTFE electroless composite plating in point A(a) and point B(b)"

Tab.1

Element and content of points A and B on surface of Ni-P-SiC-PTFE electroless composite plating%"

元素 A点 B点
质量百分比 原子百分比 质量百分比 原子百分比
C 0.88 76.60 0.82 56.96
Si 0.58 21.70 0.00 0.00
Ni 0.10 1.70 2.54 35.94
P 0.00 0.00 0.26 7.09

Fig.4

Scanned image of Ni-P-SiC-PTFE electroless composite plating. (a) Fluorine element longitudinal section; (b) Silicon element longitudinal section; (c) Fluorine element cross section; (d) Silicon element cross section"

Fig.5

Cross-section morphology of coatings(×5 000). (a) Ni-P-SiC-PTFE electroless composite plating; (b) Ni-P electrless plating"

Tab.2

Hardness of base and coating of traveller after different surface treatments"

表面处理
次数		 Ni-P-SiC-PTFE
化学复合镀/GPa		 Ni-P化学镀/GPa
基体硬度 镀层硬度 基体硬度 镀层硬度
1 6.37 6.84 6.40 5.50
2 6.23 6.60 6.44 5.34
3 6.55 6.51 6.21 5.41
4 6.34 6.71 6.35 5.32
5 6.46 6.76 6.38 5.26
平均硬度 6.39 6.68 6.36 5.37

Tab.3

Yarn hairiness index of travellers with different surface treatments"

试样 编号 质量变异
系数/%		 -50%细节/
(个·km-1)		 +50%粗节/
(个·km-1)		 +200%棉结/
(个·km-1)		 毛羽值 毛羽值
标准差
Ni-P-SiC-PTFE
化学复合镀		 1 12.81 2 8 25 3.90 0.78
2 13.01 0 3 16 3.69 0.79
3 12.57 0 5 21 3.65 0.76
4 13.11 1 10 25 3.62 0.80
均值 12.88 0.75 6.5 21.75 3.72 0.78
Ni-P化学镀 1 13.52 1 10 22 3.87 0.81
2 13.30 3 6 27 3.83 0.80
3 12.77 0 8 28 3.68 0.77
4 13.86 1 8 20 3.87 0.77
均值 13.36 1.25 8 24.25 3.81 0.79

Tab.4

Breakage ratio of different surface treated travellers after trial spinning"

表面处理 千锭时
断头根数		 落纱后
断头根数		 断头占比/%
钢丝圈
挂花		 一般
断头
Ni-P化学镀 20 51 10 90
Ni-P-Si-PTFE
化学复合镀		 16 48 5 95

Fig.6

Morphology of electroless composite plated traveler after abrasion(×2 000). (a) Ni-P-SiC-PTFE electroless composite plating; (b) Ni-P electroless plating"

Fig.7

Wear mechanism model of electroless composite plated traveler. (a) Unspun period; (b) Early spinning"

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