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 : : What is the reason of irregular wear of die?

 

>  Reason:

> Solution:

  • Bad distribution of the material



  • The mixture leans to getting out sideways
    from the compression area
  • Use of a new die with already worn rolls

  • The die has a too high thickness
  • The die may have a too high thickness
  • Changement of the die is required
  • The inclination of the deflectors is to be
    corrected
  • Use corrugated closed roll shells

  • Use new dies and roll shells or possibly
    dies and roll shells worn in the same way
  • Reconsider the thickness of the die
 : : What is the reason of too early breakdown?

>  Reason:

> Solution:

  • Presence of foreign matters in the die


  • The die has a too low thickness

  • The housing of the die is worn out

  • Breakdown of the clamping screws
  • Frequent stoppages of the die
  • The control system and the system of
    removal of foreign matters while pelleting
    must be improved
  • Thicker dies with counter drilled holes are to be used
  • The wear ring and/or the stiffening flange
    are to be replaced
  • The clamping screws are to be replaced
  • The conditioning temperature is to be controlled
 : : Why the die wears too fast?

>  Reason:

> Solution:

  • The material contains sand

  • Conditioning temperature



  • Too rough milling
  • The diameter of the pellet is too small

  • The rolls are too far away from the die
  • The cleaning methods of the raw material
    require to be improved
  • Optimise the conditioning
  • The suitable thickness of the die should be chosen
  • Add grease or additives to the mixture
  • Finer milling is required
  • Use the largest possible diameter of the pellet in line with the product
  • The rolls are to be adjusted
 : : Why the holes of the die are clogging?

>  Reason:

> Solution:

  • The rolls are too close to the die
  • The die has a too high thickness
  • After the work the die has not been
    well cleaned with sliding material,
    such as maize and oat
  • The rolls are to be adjusted
  • Change the thickness of the die
  • After the end of the work fill the holes of
    the die with a neutral product, such as
    maize and oat
 : : Why a used die does not produce?

>  Reason:

> Solution:

  • The rolls are adjusted badly
  • The die is clogged
  • The rolls are to be adjusted
  • To clear the die, you should try:
    - to put in manually unbroken maize (through the doorlet of the conveyor)
    - to immerge the die into hot oil as last solution to drill the pellets with a drill