Annealing Furnace

PURPOSE

• 1.1 Annealing is a heat-treatment process that consists of heating to the proper temperature and cooling slowly in the furnace to change hard material to soft material.

SCOPE

• 2.1 This SOP applies to Production Department.

REFERENCE(S) & ATTACHMENTS

• 3.1 References

  • 3.1.1 In-house

• 3.2 Attachments

  • 3.2.1 Attachments: Annealing Furnace Log book - SIPL/PDI/004/F01/00

RESPONSIBILITY

• 4.1 Production Department Person:

  • 4.1.1 To prepare the SOP.

• 4.2 Production Head:

  • 4.2.1 To ensure the training of the SOP to all concerned personnel involved in implementation of the SOP.

  • 4.2.2 To ensure the implementation of the SOP after training.

• 4.3 Quality Assurance Person:

  • 4.3.1 To check the SOP and to maintain the original copy of the SOP.

  • 4.3.2 To issue the controlled copy of the SOP and maintain its issuance record. To retrieve the controlled copy of the SOP when it is superseded/obsolete and maintain its record.

• 4.4 QA Head / Plant Head:

  • 4.4.1 To approve new or revised SOP.

  • 4.4.2 To ensure the implementation of the defined system.

DISTRIBUTION

• 5.1 Quality Control

• 5.2 Production

DEFINITION(S) & ABBREVIATION(S)

• 6.1 Definitions

  • 6.1.1 Nil

• 6.2 Abbreviations

  • 6.2.1 DSO-Dull Side Out

  • 6.2.2 BSO- Bright Side Out

  • 6.2.3 BSB-Both Side Bright

PROCEDURE

• 7.1 Material & Equipment:

  • 7.1.1 Slitting reels after separator.

  • 7.1.2 Annealing Furnace (capacity 12 MT).

• 7.2 Method:

  • 7.2.1 Q.C and PPC ready to plan for annealing on the basis of dispatch sequence.

  • 7.2.2 Q.C check all parameters (furnace health / gauge / width / OD / alloy) and set the annealing cycle.

  • 7.2.3 Operator loads material on the charger as per charge sequence with proper identification.

  • 7.2.4 Set temperature and time as required for the particular charge (Pharma / light gauge).

  • 7.2.5 Enter the particular charge cycle and duration of cycle in the log sheet. Note the temperature reading during charging in the log sheet wherever applicable.

  • 7.2.6 Monitor temperature and report to the shift supervisor in case of abnormality for necessary action.

  • 7.2.7 After the charge is completed, unload material and store in the cooling bay.

  • 7.2.8 After material is sufficiently cooled down, offer material for inspection.

  • 7.2.9 Use hand gloves and avoid any kind of damage and excess scrap generation.

• 7.3 Charging Cycle Details:

------------------------------------------------------------------------- SL. NO. Thickness Width (MM) Texture Temperature TOTAL CYCLE (MIC) °C (HRS) ------- ------------ ------------- ------------ ------------- -----------

9 300-1100 DSO/BSO 200-300 20-60 Hours

12 300-1100 DSO/BSO 200-300 20-60 Hours

20 300-1100 DSO/BSO 290-350 20-35 Hours

25 300-1100 DSO/BSO 290-350 20-35 Hours

30 300-1100 DSO/BSO 300-400 20-40 Hours

30 300-1100 BSB 350-400 30-45 Hours

40 300-1100 DSO/BSO 300-400 20-40 Hours

40 300-1100 BSB 350-400 25-45 Hours

50 300-1100 DSO/BSO 300-400 30-45 Hours -------------------------------------------------------------------------

------------------------------------------------------------------------- SL. NO. SRC Width (MM) Texture Temperature TOTAL CYCLE Thickness °C (HRS) (MIC) ------- ------------ ------------- ------------ ------------- -----------

30-70 250-1100 BSB 250-350 20-30 Hours

• 7.3.1 Note: Temperature tolerance ± 15 °C and hours set on the basis of temperature.

REVISION HISTORY

+----------------+----------------+----------------+----------------+----------------+----------------+ | Revision No. | 00 | Effective | | CC No. | | | | | Date | | | | +----------------+----------------+----------------+----------------+----------------+----------------+ | Details of revision: New SOP | +-----------------------------------------------------------------------------------------------------+