Enameled wire pinhole test method , use 6 meters wires without bending and unstretched copper sample, be immersed in 3% alcohol phenolphthalein +0.2% salt solution, the solution is positive, negative to sample by DC 12V DC for a minute, then you can have the number of pinholes (pinhole places will have red bubbles, the pinhole numbers in 8pcs the following qualified) Specification for brine pinhole test enamelled wire Operation steps 1.Prepare wire or wound armature/stator samples according to t
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Enameled wire pinhole test method , use 6 meters wires without bending and unstretched copper sample, be immersed in 3% alcohol phenolphthalein +0.2% salt solution, the solution is positive, negative to sample by DC 12V DC for a minute, then you can have the number of pinholes (pinhole places will have red bubbles, the pinhole numbers in 8pcs the following qualified) Specification for brine pinhole test enamelled wire Operation steps 1.Prepare wire or wound armature/stator samples according to t
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