| 配方类型： |
MISCELLANEOUS |
| 配方说明： |
Cast Iron Chip Corrosion Test |
| 配方组成： |
Control - Water (100 ppm hardness)
stain present on the paper.
Standard - Sodium Nitrate solutions
Test Strips - 1 x 3" strips cut from Whatman No.1 filter paper have been
solution and allowing overnight drying. After removing the pile of chips
Basically, this test consists of exposing cast iron chips to a test
found suitable.
Cast Iron Chips - 20/40 mesh degreased cast iron chips available form
Test Solutions - Test solutions prepared from 100 ppm Ca++/Mg++(3:2)
Connelly-GPM, Inc., Elizabeth, New jersey. These are preferred due to
their uniformity of size and low fines content.
Procedure - Moisten a paper strip using the solution under test, and
place on a watch glass. Add 4-6 oz. cast iron chips to the test
solution, stir and allow a minum of 15 seconds exposure. Pour off test
solution and transfer chips onto paper strip in a pile approximately 1"
in diameter. Place watch glasses in a box with approximately 5" high
walls and co |
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