REM(tm) ISOTROPIC FINISHING (also called Vibratory Tumble Burnishing)
The objective is to significantly increase reliability of power transfer systems by increasing gear contact fatigue life, increasing gear tooth bending fatigue life, decreasing the coefficient of friction, and extending the performance and service life of the gear sets. Super finishing by the Government has demonstrated a 3X mean life improvement due to an increase in resistance to contact fatigue
The process involves two steps.
The first, referred to as the refinement process involves a chemical interaction on the surface of the part. A soft, thin (one micron) film is formed on the surface of the part. The part interacts with a ceramic media in a special vibratory tub, this film is physically removed from the "peaks" of the processed part and the "valleys" are unaffected. The chemically induced film re-forms only at the peaks that are interacting with the vibratory media, and the process repeats itself. Over time, the peaks are removed, leaving only the valleys, producing the improved micro finish.
THE BENEFITS ARE:
Reduced Friction, Vibration and Noise
More power to the wheels
Reduction in Lubricant Temperature
The second step is referred to as the burnish process. After the required micro finish is achieved, a mild alkaline mixture is introduced. After a relatively short period a polished, chrome-like finish is produced. In addition to the polishing effects, this step effectively removes all traces of the film formation from the refinement process.