MIL-STD-1501F
a. Power source. Either generated or rectified D.C. current may be used. Ripple value shall not exceed 10 % (percent) as measured by dividing the Root Mean Square of the A.C. voltage component by the D.C. voltage. This can best be measured by using an RMS A.C. voltage meter and dividing this value by the D.C. voltage. These measurements are to be taken across the anode and cathode bus at the tank.
b. Tanks. Tanks shall be resistant to the operating temperature and the chemical environment.
c. Temperature control. Plating tanks to be operated at temperatures other than room temperature shall be equipped with automatic temperature indicating and regulating devices.
d. Instrumentation. An ammeter shall be placed in series with the chromium tank cathode. The ammeter shall have sufficient shuts and switches to provide a full-scale reading equal to the maximum capacity of the power source, and an accuracy of ± 5 percent of the current being measured.
e. Blast equipment. Blast cabinets shall be located near the plating line. The size of the cabinet shall be adequate to enclose the parts to be plated. Air lines shall be suitably trapped and filtered to prevent in-process contamination of the parts to be cleaned.
f. Bake oven. An oven capable of baking parts at 191 ± 14°C (375 ± 25°F) shall be located near the plating line. The size of the oven shall be adequate to enclose parts to be plated. The oven shall be equipped with temperature indicating, recording and regulating devices.
4.3 Specification SAE-AMS-QQ-C-320. All parts shall be plated in accordance with the requirements of SAE-AMS-QQ-C-320 and in conjunction with those specified in this standard. If there is a conflict between the two documents; however, the
requirements of this document shall govern.
4.4 Finish. The plated part will have a finish that is continuous, homogenous, adherent, and free from harmful defects.
4.5 Shot peening. All parts shall be shot peened in accordance with SAE-AMS2430 and
MIL-R-81841, unless otherwise specified.
4.6 Embrittlement. Qualification test specimens and process control test specimens shall be subjected to a sustained load test at 75 percent of the ultimate notched tensile strength. The specimens shall endure this sustained load for 200 hours minimum without failing or cracking.
4.7 Reprocessing. Parts rejected for defective plating, requiring stripping and re-plating, shall include all of the pre-plating steps of this standard. Parts shall be
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