Your current location: > ¡ö Along with the rapid development of the textile industry, especially the chemical fiber sector, the important role of ceramic guides having been more and more recognized by the insiders£® Poor quality or improperly-selected guides may cause "snow" , "hairs" ,or even "breakage" etc£® problems in the initial stages of textile production process£¬consequently£¬poor quality of final products£®
¡ö Different from the ceramics used in other fields, surface roughness of textile ceramics is a decisive factor in users' consideration£® The reason is that, the surface roughness defines the friction coefficient while the yarns / threads passing through the guides ( Please refer to the diagram as below ), and as return the amount of heat created due to the friction with the guides£®
"Heated"guides may cause slight shape-change of yarns / threads-especially for chemical fibers£¬and create "sticking effect" on the surface of guides£¬ as result higher friction coefficient£®Thus£¬ the a.m. problems occur£®
To avoid the problem£¬ DATIAN CERAMICS have developed a variety of ceramic guides with different surface Conditions for customers' selection£®
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1£®Natural sintered surface£ºRa = 0.6-0.8 ¦Ìm 2£®Normal polished surface£ºRa ¡Ü 0.4 ¦Ìm 3£®Fine polished surface£ºRa ¡Ü 0.2 ¦Ìm 4£®Low friction surface£ºRa = 0.3-0.4 ¦Ìm |
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| ¡öNatural sintered surface | ¡öNormal polished surface | ¡öFine polished surface | ¡öLow friction surface |
Recommendation£º
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Natural surface |
Normal polished surface |
Fine polished surface |
Low friction surface |
| Spinning,weaving£¬ knitting |
Key positions in twisting & spinning£® Winding sector of yarn-making & textu rising |
Twisting & heat-setting sectors in texturising |
Sectors between spinneret and winder in yarn-making£® Key positions between creel and the top of 1st heater in texturising£® |
Attention: The recommendation is only for reference, customers should make more proper & economical decision according to their own production conditions & experience. For instance, guides with normal polished surface may also be used in coarse fiber yarn-making process!
General prompt for oiling nozzle selection:
While choosing the oiling nozzle£¬ the following factors should be considered£º
1£®Yarn speed£º
lf the speed less than 4,000 m/min£¬ normal polished surface can be considered.
If the speed more than 4,500 m/min£¬ low friction surface should be considered.
2£®Size of yarn£º
For filament more than 1 dpf, no rmal polished surface can be conside red£®
For filament less than 1 dpf, low friction surface should be considered£®
3£®Material£º
Nylon & full dull polyester yarns have special requirements on the design and surface conditions of the nozzles£®
DA TIAN may provide the service for nozzles selection£® While making inquiry£¬please specify the points as above£®