• No results found

From the above analyses and experiments, some modifications should be conducted in the rig to achieve better performance. Suggestions are as follows:

1. More power is expected for the heating device to obtain higher temperature. It is recommended to use a larger but shorter heating element to increase the power.

Chapter 7 Conclusions and Recommendations 177 2. Electric brushes and commutators should be relocated further from the heating disk to

decrease oxidation of copper, and hence they should be shielded as m u c h from the heat as possible.

3. Omit the heating device cutoff circuit to keep the heating device on when pausing the experiment.

4. Decrease significant warpage of heating disk. We can increase the thickness of the disk and decrease the width of the disk ring, and can modify the mechanical device on the supporting b e a m of the roller to m a k e the roller and the warping disk contact m o r e evenly over the roller width.

5. Need to introduce water cooling to the roller to simulate rolling process, and computer can control it on- or off- operation.

6. Using hydraulic jack to apply the load, which can be controlled by the computer.

7. Two rollers with different materials should be tested at the same time to provide qualitative and quantitative indications of their wear and friction characteristics.

8. Different roll bite lubricants should be applied in the experiment.


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