| Periodic Bit
Reconditioning |
| Periodic
bit reconditioning will prolong a button bit's ability to produce the greatest total
meterage at the fastest penetration rate. Reconditioning involves
re-profiling the tungsten
carbide buttons and restoring the gauge relief taper using Diaroc/Scandia or Super
Diaroc Tools and removing the body steel to give the button the correct protrusion
using Boroscan Tools. |
| General
Points |
| The
Diaroc/Scandia and Super Diaroc diamond tools with their built-in arc profile are in the
grinding process performing a reprofiling of the worn button back to the original
factory profile. |
| Restore
the Profile of the Button |
| When
re-profiling the buttons
with the Diaroc / Scandia and Super Diaroc Tools move the grinding machine in circular
movements. |
|
|
For each size of the tungsten carbide button
bit a corresponding diamond tool is to be applied in the grinding
re-profiling process. The
grinding re-profiling with the Diaroc/ Scandia
and Super Diaroc should always be done with water flushing. Adjust the water valve for
proper water feed. Correct feed is when the drips are joining up in a small stream.
|
|
Proper Grinding Machine
|
|
The method of re-profiling is quickly and
efficiently carried out using the new VS-200 or VS-260 Hand-Held Air Grinders in
conjunction with Diaroc/Scandia and Boroscan tools at a working speed under load of
approximately 20,000 rpm. It is essential that this tool is always used with adequate
supply of oil in the air supply.
|
|
