This research aims to study the contents of the variable thermal processes appropriate to T6 hardness of aluminum semi-solid A356 grades by the sectional area of the work piece, start 1x1 square centimeters by using techniques of stress stimulation techniques, SIMA, with the section through the remaining 64%. Be dried at the temperature of each partial 595° c la Mauritius time 35 minutes to be used in the preparation of the grain structure, nodular appearances. By this research will be the application of experimental design to a full (General Full Factorial Design) to find the levels of factors. Options variable (Variable parameters) each time to bake striped phase is 2, 4, and 6 hours of intermediates in the cooling water, at a temperature of 70 degrees c and palm oil. The cure time is 12 hours and 0 2 4 6 10 static variables (Fixed parameters) each baking temperature patterns and temperature 540 degrees phase hinterland in the hinterland to 160 degrees, curing using a rock wells to test the hardness. The trial found that the workpiece hardness values most is some 540-degree temperatures, melt baking hinterland at 4 hours cooling in water temperatures of 70 degrees, 160 degree temperature, curing the hinterland, the hinterland at 12 hours and minimum strengths is baked at a temperature of 540 degrees of partial melting hinterland that cool 6 hours in water curing temperature of 160 degrees at the hinterland at 12 hours and the work piece through the update process for thermal T6 will have greater hardness work pieces, start.
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