| It's used to test the corrosion resistance of
the electrodeposited coating of many kinds of metallic materials.Use the
salt spray test machine to spray the Sodium Chloride Solution to the
surface of electric coating to achieve the purpose of detection.The
material is stainless steel.
² Equipment:
All equipment
needed in the test: Spray nozzle, salt water barrel, test piece support,
spray liquid collection container, test chamber, salt water, supply
tank, pressure tank, supply equipment and exhaust equipment required for
compressed air, the device is shown in Fig, and test as followed.
ü Blunt
material is required, it is required that the material itself cannot be
corroded, and it can not affect the corrosion test.
ü The
fog nozzle cannot spray the test liquid directly to the sample , the
solution at the top of the spraying chamber cannot drop on the test
piece.
ü The
test liquid dropped from test piece cannot flow back to the salt bucket
again for the test.
ü The
solution should not contain grease and dust, so you have to prepare an
air cleaner.
ü Spray
liquid should be collected at least 16 hours, an average per hour can
be collected 2ml to 1ml solution. Use the final average to represent the
amount of spray.
ü The
concentration of the Sodium Chloride Solution should be maintained
at 40~60g/L.
ü The
temperature of the pressure barrel should be kept in 47+1 degree,
temperature of the brine barrel should be kept in 35+1 degree.
Sample placement:
If you need to test many pieces,
make sure that every major surface can be detected by salt fog at the
same time.
Permutation of samples, the spray
should be free to drop on all the test pieces, preventing the situation
of blocking the spray.
Each sample cannot be in contact
with each other.
Salt spray can’t drop from one test
piece to another one.
Sample identification mark should be
marked on the bottom of the test piece.
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