Tuesday, November 11, 2014

Gassing Machine - General Requirement - Important POINTS to be remembered

Controls & Monitoring required for a gassing machine:
  1. Speed Control  / tuning – Either with the help of AC Variable Frequency Drive or Mechanical Variator Pulley is required to get the required level of weight loss
  2. Flow Meter – is essential to control and monitor the flow of gas and air supplied in the machine
Above this
  1. Gas supply must be common control and must not have individual control
  2. In individual drum drive, speed variation between drum may cause variation in gassing. Hence group drum is best 
  3. It is better to cover the yarn passage by ceramic guides which will prevent the generation of hairiness and some times it will control the elongation of yarn
  4. Winding tension variation may cause difference in firing hence effective tension device is required
  5. The yarn must go throw the centre of the burner and it is better to keep the bottom and top centering guide as a fixed one (Not a moveable)
  6. The adopter bearing must rotate with out any disturbance other it will affect the take up speed and cause loss variation
  7. The cleaning of the burner and guide rollers must be done at proper interval. Accumulation of scale (evaporated wax content presented in the cotton yarn) inside the burner will increase the burner temperature and change the loss %
  8. Accumulation of carbon content in the guides will generate further hairs



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