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Ring Load

1) Start-up proceeding for new rings involves securely fixing the rings horizontally and concentrically to the spindle. Bräcker rings do not require cleaning as the conservation material helps startup. 2) For TITAN rings, the traveller must build up a lubrication film during startup depending on fiber material and yarn count. For regular fibers, no spindle speed reduction is needed, only shortened initial traveller change intervals. 3) A running-in program smoothes and passivates the ring raceway through applied travellers while building up a necessary lubrication film. Spindle speed must be reduced for the first 10-20 traveller changes depending on fiber, yarn count, and final speed.

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Mohamed Naeim
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144 views1 page

Ring Load

1) Start-up proceeding for new rings involves securely fixing the rings horizontally and concentrically to the spindle. Bräcker rings do not require cleaning as the conservation material helps startup. 2) For TITAN rings, the traveller must build up a lubrication film during startup depending on fiber material and yarn count. For regular fibers, no spindle speed reduction is needed, only shortened initial traveller change intervals. 3) A running-in program smoothes and passivates the ring raceway through applied travellers while building up a necessary lubrication film. Spindle speed must be reduced for the first 10-20 traveller changes depending on fiber, yarn count, and final speed.

Uploaded by

Mohamed Naeim
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© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
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54 Rings Start-up proceeding for new rings Start-up proceeding for new rings Rings 55

Start-up proceeding for new rings (ring running-in)

Ring fixing Selecting travellers Ring load


The same travellers as for the regular spinning
The rings have to be fixed securely, horizontally operation can be used. In order to prevent any damage on TITAN rings,
and concentric with the spindle. It is not necessary one should not exceed the ring load as
to clean Bräcker rings, the special conservation Ring load indicated in the diagram/table below. Bräcker
material helps the start-up of the rings. Should the Avoid too heavy loads on the traveller raceway takes no liability for damaged rings if the
rings nevertheless be cleaned, use only a dry cloth of the rings. recommended loads have been exceeded.
(do not use any solvents).
Traveller wear
Running-in procedure for THERMO 800 rigs Avoid heavy traveller wear at start-up and regular 6000
Conventional rings must go through a running-in running in order to prevent premature ring wear.
program. By doing this, the ring raceway is
5000
smoothend and passivated (oxidation) through the Running-in program, start-up instruction

Load in mN
applied travellers. At the same time the necessary Instructions corresponding to each Bräcker ring type
lubrication film coming from wax, softening agents are delivered with each shipment. Upon request, 4000
and fibre fragments is built up. Depending on the a specially adapted program can be provided too.
firbre spun, yarn counts and final speed, the Please contact your local agent. 3000
spindle speed must be reduced for the first 10 to
20 traveller changes. It is essential that the ring For establishing a running-in program we need
running-in is carried out carefully, as this will the following specifications: 2000
improve the general running conditions and in • Ring diameter
addition it will extend the ring life. • Ring type, flange size
• Fibre type, yarn count, twist Ring inner diameter in mm 54 51 48 45 42 40 38 36
Start-up proceeding for TITAN rings • Final speed (rpm)
Cotton 5000 4850 4650 4300 4000 3600 3250 2900
Under normal condition the TITAN coating can not • Presently used traveller (type and weight)
Pes / Blends 6000 5800 5600 5200 4800 4400 4000 3600
be affected by the traveller. However, in the first • Present traveller life
phase, the traveller has to build-up a lubrication film Maximum ring load in mN
on the ring and this depends on the processed
Formulas
fibre material and yarn count. For regular fibres, the
start-up proceeding is carried out without
Ring load Maximum spindle speed
reduction of the RPM, only the first traveller change
intervals are shortened. For compact yarns and m·v 2
L · d . 60 · 1000
L = RPMmax =
very fine yarns (from Ne 80) a special start-up r m · 2 d · 3.14
program must be applied.

L = ring load in mN L = ring load in mN


m= traveller weight in mg m = traveller weight in mg
v = traveller speed in m/s d = ring ø in mm
r = ring radius in mm (ring-ø/2)

Traveller wear see page 54

Start-up instruction (ring running-in) see page 52

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