RIGHTSPUN DUE CARE POINTS for SPINNING MILLS

RIGHTSPUN TIPS on ROLL ROOM CARE
1. Buffing - restoration of smooth surface, to get a smooth and even surface.

2. The cut given during buffing should ideally even out / remove
i. the material passage groove
ii. the surface nicks, burrs
iii. any cuts
iv. surface wax and
v. any decomposed surface coating.

3. The three equally important elements of buffing are –
i. the grinding wheel & speed,
ii. the clamp holder for the arbor,
iii. the exhaust arrangement for liberated fine dust

4. Higher the cutting speed (than recommended) – arbor will get overheated, not good for the bearing lubrication inside the arbor

5. Worn / improper clamp holding of the arbor – results in uneven buffing.

6. Daily mild dressing of the grinding wheel is essential to ensure the quality of buffing.

7. Diamond tipped dressing tool, diamond tip size selection, tip worn out tool periodic discarding and replacement are all very very important.

8. Lesser depth but more frequent buffing is better than deeper and wider frequency of buffing.

9. Lesser depth cutting does not disturb the polymers in the rubber cot. More cut results in surface hardness increase.


RIGHTSPUN TIPS on TOP ROLLER COTS CARE
1. For Ring frames - with ever increasing spindle speeds, consequently the drafting pressure, force & delivery speeds – the buffing needs to be planned more scientifically based upon delivery rate – ideally @ 1000 english hanks delivery (appx.770km ).

2. A cut depth of 0.1mm or less per buffing is enough and practicable.

3. For draw frames – considering the drafting pressure, force & delivery speeds – the buffing needs to be planned more scientifically based upon delivery rate – ideally @ 4000 english hanks delivery (appx.3000km).

4. For speed frames – buffing schedule basis can be similar to RF.

5. Comber detaching roller cots buffing is quite tricky and depends upon far too many variables, since the rollers handle very thin fine oriented fleece of fibres. Customised schedules to be evolved by individual mills themselves based on external factors such as RH control, surface treatments practiced, speed of the machine, type of raw cotton etc. Draw box roller cots can practice based upon drawframe top roller buffing.

6. Surface treatment – such as irradiation, varnishing etc helps in covering up the buffed pores of the rubber cots after buffing. This again depends upon many variable factors and differs from mill to mill.

7. Natural sunlight radiation also is good enough but not practicable in reality.

8. Acid treatment – better to avoid until inevitable, all other means are attempted and exhausted. Such necessity may arise in synthetics, definitely not required for cotton processing. Due to polymer decomposition the rubber cots become harder and tend to allow fibre slippage, consequently increase in IPI.