Effects of Polymer Concentration in Quenchant

Honeywell FM&T investigated the effects of the quenching solution used during the AMS 2770 wrought aluminum alloy heat treatment process.  The research varied the Type 1 polymer concentrations between 10 and 25 percent in the quenchant solution.  The scope was limited to investigate aluminum 6061 and 7075 alloys treated to the T6 condition and used plate sizes ranging 1 to 2.5 inches in thickness.  Statistical analysis was used to determine the magnitude of the effect of polymer percentage on material properties of the aluminum alloys at these conditions. The research was conducted to determine the basis for the glycol restrictions within the ranges typical to internal manufacturing processes. Our conclusions are based on statistical evaluation of tensile, yield, hardness, and electrical conductivity results obtained as a result of the investigation.