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High-temp corrosion
evaluation equipment |
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Close-up view of high-temp
corrosion evaluation equipment |
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The main apparatus consists
of standard wall borosilicate glassware. |
The high-temperature corrosion
evaluation procedure is an API CJ-4-approved test. This
procedure evaluates diesel engine lubricants to determine
their tendency to corrode various metals, specifically
alloys of lead and copper commonly used in cam followers and
bearings.
High-Temp Corrosion Evaluation Equipment and Procedure
The main apparatus consists of standard
wall borosilicate glassware including:
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Main sample tube
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Sample tube head
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Air tube
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Thermocouple tube
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Condenser
Additional essential equipment includes:
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Metal specimen hanger
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Adapter
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Heating bath
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Dry air supply
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Flow meter
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Balance
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Syringe
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Oven
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Forceps
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Thermocouples
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Sanding block and holder
Four metal coupons of copper,
lead, tin, and phosphor bronze are immersed in a measured
amount of engine oil. At an elevated temperature of 135°C,
the oil is blown with air.
Pass/Fail Criteria
The pass/fail criteria for the high-temp corrosion
evaluation procedure consists of:
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Copper, used oil increase, max 20
ppm
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Lead, used oil increase, max 120 ppm
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Copper strip rating, max 3
For more information about our
high-temperature corrosion evaluation capabilities, or how you can
contract with Southwest Research Institute (SwRI), please contact
Becky Grinfield at
bgrinfield@swri.org or (210) 522-3652.
hitempcorr.swri.org
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Southwest Research Institute® (SwRI®), headquartered
in San Antonio, Texas, is a multidisciplinary, independent, nonprofit, applied
engineering and physical sciences research and development organization with
11
technical divisions.
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