Suitability Test

Suitability test of Shrinkin'Sleeves for  

• Continuous operating temperature.
• Long duration testing at high temperature

Sample Description:

• Cut lengths of Shrinkin'Sleeves to be tested.
• Sleeves under test, shrunk on appropriate mandrel.

Procedure: Cut lengths of sleeves/sleeved mandrels progressively exposed to various temperatures, durations in the oven. The results observations are tabulated after removal of test samples from oven.

Test Specified : Expose test samples to following parameters. a)Continuous operation

Temperature: 100oC x 1000 hrs. Long duration testing at higher temperature : 110oC x 24 hrs.

Observations

• The shrinkage should be even from all sides.
• The surface, smooth all over without pit marks / pin holes
• The sleeving should not develop any crack.
• The sleeving retains all its properties after cooling.

Inference:

• Shrinkin'Sleeves can be used at an elevated temperature of 100oC for 1000 hours.
• Shrinkin'Sleeves have got a capacity to bear a heat shock Upton 110oC for 24 hours.

Sample Description : Cut lengths of "Shrinkin'Sleeves".

Apparatus

• Ignition chamber : Corning / Pyrex glass, dia. 75 mm x 450 length.
• Ignition source : Bunsen burner, placed in a fume cupboard.

Procedure :

• Clamp an appropriate size & length of "Shrinkin'Sleeves" in a holder & fix it into the ignition chamber.
• Light the ignition source under normal Oxygen conditions.
• Bring the test sample in the ignition zone.

Observations :

• After shrinkage test sample gets ignited in the ignition zone.
• There is no droppage of any melt during ignition.
• Test sample withdrawn out of ignition zone or the ignition source put off, the ignition of test sample ceases immediately.
• The ignited material leaves granular ash.

Inference : "Shrinkin'Sleeves" are self extinguishing with no droppage of any melt during ignition.