When placing the order with us you should give us the exact
dimension of the shell or the roller. It sometimes happen that due to the
incorrect dimensions of the Cots they slip or burst. So would suggest you
to give exact dimension of the shell and roller. The
following three demensions are very important in Cots.1.BRD: It is the shell
on which the Cot is to be pressed on..2.FOD: It is the diameter after the
cot is pressed on and grinded.3.Length: It is the length after the cot is
Hardness should be seen before placing the order. Company wont be responsible for any incorrect order placed.
5 to 10 percent tendency is given in Cots taking in view its hardness to be mounted on the shell. The diameter of the cot is made lower then the shell so it can fix properly on the shell and can get its grip.
The foremen who is controlling all the things needs to see
wheather the grinding is being done properly or not as quality of yarn all
depends on the smoothness of cots. The foremen should take notice of wheather the cot is being mounted properly or
not, H.K Industries gives importance to the foremen as he has a big hand to
production of quality and yarn. Preparing the Rollers.
The Rollers should be thoroughly cleaned and should be checked that they are
free of oil and any kind of dirt. The non-detachable assemblies fitted with
ball bearings should not be put any pressure on the ball bearings while cleaned.
Use a clean cloth with any solvent to clean the Rollers.
Cots can be conveniently mounted by a hidrolic pressure machine. The machine can be supplied by H.K Industries for more information contact firstname.lastname@example.org
Grinding the Cots
The grinding stone should be dressed properly from the center
and edges. There is a possibility that cot may burn that can be due to the
stone you are using. Use a white aluminum oxide wheel having 60 or 80 grit
and medium hardness. High Speed drawing Cots can take 15 days for the first
grind while Press Fit hardness 63-75 can take 45-60 days for the first grind
depending on the type of cotton and count, and further on depends on the hardness
of the cot. The shell on which the cot is pressed should be checked properly
wheather its clean or not, it doesnt have oil or grease on it. Adesives can
be used to clear the shell. A badly ground cot can result in roller lapping
and inturn may lead to yarn breaks. Yarn
breaking can happen due to various problems in roving, unsuitable ring travelers,
rings or tapes, humidity etc
Cots need a re-grind when you see:
1. Wear or grooving in traverse area
2. Knife cuts on surface
3. Glazing of surface which can result in loss of fibre control Finishing
After Grinding Cots are given special treatment to reduce moisture and smooth to the surface. Special equipments are there in order to complete this treatment.
If there is any thing else you want to know about aprons and Cots. Please contact us on the following e-mail