Compressive Creep Test

Operating Procedures for Compressive Creep Test

Objective: To detect the isothermal deformation of refractories over time under high temperature and constant compressive stress.

Operating steps:

1. Sample loading: To life the heating furnace to the upper limit, get the protective support rod erected, to place the furnace on the protective support rod, and keep the steel wire rope behind in a loose state. To place the lower gasket, the sample and the upper gasket on the lower pressing rod in proper order, and then hang the rod. The cylinder sample is 50mm in diameter and 50±1mm in height, with a central hole (12mm in diameter).

2. Loading: To make the furnace body descended to the lower limit, to reduce the weight of the sample loaded from the weight tray. To press your hand on the weight, pull out the connecting pin from the weight, to slowly press the upper pressing rod on the sample, and remove the hook. To check if the inner chamber tube and the outer chamber tube can move freely.

3. To open the interface, click function selection, to click displacement calibration, to conduct displacement debugging, to raise the displacement meter tracking device to the working position, to adjust the fine-tuning knob of the displacement meter tracking device to make the displacement display about 2mm, and then to lock the locking wheel.

4. To open the interface again, to click the search type, and to select creep test.

5. To click function selection, to input working parameters, and to set program curve.

6. To open the test run, to click the system startup, to check if the manual potentiometer on the panel is at the minimum position, and then to press the start button, to switch the automatic manual switch to automatic operation, and then to click automatic operation on the screen.

Note: 1) To remove the displacement sensor after the test. 2) After the test, to slightly lift the furnace and place it on the support rod of the furnace body, so that the steel wire rope can be unloaded.

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Preparation of Test Samples for Refractories

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