What is the Copper strip Corrosion test? Operation Code for copper corrosion analyzer

Preparation before test:

Preparation of test pieces:

Using silicon carbide or aluminum oxide (Gang Yu) sandpaper (or gauze) the copper on the surface of the six flaws removed. Then 65 (240 micron size) of silicon carbide or aluminum oxide (Gang Yu) sandpaper (or gauze), grinding marks to remove previously with other grades. Leave sandpaper polished, put a piece of paper on the flat surface, with kerosene or washing solvent wet sandpaper, to move against the rotating copper sandpapering, with ash free filter paper or clamps. To prevent the copper contact with fingers. With polished finished metal scraps of copper on the filter paper wipe, the copper is immersed in the cleaning solvent in the reserve.

Sampling:

The container should be filled with the sample as soon as possible, immediately after sampling, be careful when sampling, prevent the sample from being exposed to direct sunlight or even scattered sunlight

Test procedure:

The sample completely clear and without any water or water containing suspended into clean, dry test tube and 30 ml of the scribe, and after the final polished clean copper immersion within 1 minutes of the test tube in the sample. With a vent to the cork plug tube. The tube into the water bath 50 plus or minus 1 Deg. C. In the bath for 3 hours. After 5 minutes, press the examination of copper.

The contents of the test tube into a 150 ml high type beaker, pour to make copper gently slid into the beaker, lest Pengpo. With stainless steel tweezers immediately remove copper, wash the sample impregnated solvents. Immediately remove the copper solvent. Quantitative filter paper blot on copper to copper in the flat tube, with cotton plug the nozzle, the copper corrosion and discoloration or to check the standard color comparison. Signs of corrosion and corrosion of copper when comparing standard color to light a 45 degree angle of refraction way of holding, were observed.

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