Hot Set Test Oven

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Hot Set Test and Heat Pressure Test (with or With out HMI-PLC control):-
The instrument is manufactured as per the IEC specification and also confirms other international standards. The instrument contains:-
• A double walled cabinet with inside chamber of stainless steel
• Inner dimensions of the chamber are 30 cm x 50 cm 20 cm (W x H x D).
• Full view glass Door to observe the specimen under test.
• Temp. Range 250 ± 2 o C. at sensor point.
• The oven is designed to give 8 to 20 air changes per hour.
• An Digital air flow meter is fitted to monitor the airflow rate. Range 0- 10 LPM, LC-0.1 LPM
• Grips are provided at the top of the oven to hang specimen/s.
• Suitable weights up to 1 kg are provided with provision to attach the weights to one end of the test pieces.
• Two ultra sonic sensors combined with laser pointers are given on the front door.
• Laser pointers are attached to facilitate the operator to take exact reading of the sample elongation.
• A blade is provided in the oven to cut the sample to remove the tensile force without opening the door.

Description

EN 60811-507 and IEC 50811-507 describers the method of testing Hot set of a crosslinked thermoplastic. The purpose of this test is clearly to assess the degree of crosslinking achieved in the plastic used for extrusion.

The test result informatively shows the extent of crosslinking between Carbon and hydrogen molecules of a hydrocarbon used as plastic here.

The norm suggests to use dumbbell samples marked with 20 mm or 10mm distance in the middle of the sample equally distant from center.

Upon putting the samples with prescribed weight, temperature and clips to hang and time required, the elongation is measured in the sample to understand degree of crosslinking.

After wards, it is also possible to do a permanent set test of the same sample to evaluate thermoset behavior of the plastic used. To be noted that the thermoset behavior depends on the crosslinking as well and its directly proportional.

Our EN 60811-507 compliant hot set test ovens have different types.

  1. With Laser guided gauge and  automatic reporting system (Through HMI)
  2. With manual scale measurement and reporting

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