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Abrasive cutting, of which deburring, radiusing, and preplate refinement are the major operations, involves the use of an abrasive; either free abrasives grain as found in dry compounds, or in an abrasive media. The vibratory action of the machine causes an impingement of the abrasive against the part. This provides a smoothing or refining of the surface. Abrasive cutting requires the compound to provide good lubrication to reduce impingement of the abrasion on the part and promote grinding action on the burr or sharp corner. This eliminates the possibility of gauling.
The desired action would be to have the abrasive slide along the surface of the part and impact the burr much like a grinding wheel or file. It is important to reduce the friction between the media and the part so that the energy imparted to the media is transmitted to the burr. Since the part is being ground by the abrasive, the compound has another important task. It must keep the media clean and carry metal fines as well as broken down media away.
The most popular deburring compounds are:
is a mildly alkaline non-ferrous deburring compound. Its operating pH is 8.7. L-127 offers good cleaning, and moderate foam level. It is comparable to L-161 with better hard water stability. --------------------------------------------------------------------------------
is a low-foaming version of L-127. |
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