1、 This document is restricted and may not be sent outside Navistar, Inc. or reproduced without permission from Corporate Technical Standards. Suppliers are required to assume all patent liability. 2009 Navistar, Inc. AUGUST 2009 Page 1 of 6 NAVISTAR, INC. CEMS (CORPORATE ENGINEERING MATERIAL SPECIFIC
2、ATION) NUMBER: CEMS BT-10 TITLE: Oxidation Corrosion Test CURRENT ISSUE DATE: August 2009 WRITTEN/REVIEWED BY: Materials Engineering APPROVED BY: Materials Engineering SUPERSEDES ISSUE OF: October 2001 PRINTED COPIES OF THIS DOCUMENT MUST BE VERIFIED FOR CURRENT REVISION This specification may invol
3、ve hazardous materials, equipment, and procedures. This specification does not purport to address all of the safety issues associated with its use. The user is responsible to consult appropriate safety and health practices and to determine the applicability of regulatory limits prior to use. Change
4、Notice: Replaced “International Truck and Engine Corporation” with “Navistar, Inc.” per corporate directive. 1.0 SCOPE This is a method for determining oxidation stability of fluids and their corrosive attack on metals. 2.0 APPARATUS 2.1 Test cell - Pyrex glass test tube, 38 x 300 millimeters, with
5、a 34/45 standard taper ground glass joint 2.2 Condenser - Allihn type, Pyrex glass, 300 millimeter jacket and a 34/45 standard taper ground glass joint to fit the test cell. 2.3 Air tube - Pyrex (see Figures 1 and 3, pages 3 and 5, respectively) 2.4 Ring rod - (see Figure 2, page 4) 2.5 Bath capable
6、 of maintaining a test temperature 2F (1C) 2.6 Analytical balance with a sensitivity of 0.1 milligram 2.7 Nylon or stainless steel forceps 2.8 Flowmeter capable of measuring 50 5 milliliters per minute of clean dry air 2.9 Four ounce (120 ml) bottle 3.0 MATERIAL The metal corrosion specimens will be
7、 as shown in Figure 4, page 5, and will meet the following specifications: 3.1 Aluminum, cold rolled sheet: 2024-0 per ASTM B 209 (AA2024-0 per SAE J457) 3.2 Copper, cold rolled annealed sheet: Alloy 110 per ASTM B 152 (CA110 per SAE J463), or Type 110 per CEMS C-3 3.3 Steel, SAE 1010 cold rolled sh
8、eet 3.4 Cartridge brass, annealed: Alloy 260 per ASTM B 36 (CA260 per SAE J463), or Type 260 per CEMS C-3. 3.5 Test fluid Other required test fluids/materials are: 3.5.1 Mild wetting agent, Alconox or equivalent: 3.5.2 Potassium cyanide, reagent grade: 3.5.3 Toluene, reagent grade 3.5.4 Alundum, 90
9、mesh, RR Crystalline, Blue Label 3.5.5 Isopropyl alcohol, reagent grade 3.5.6 Trichloroethylene, technical grade NUMBER: CEMS BT-10 TITLE Oxidation Corrosion Test CURRENT ISSUE DATE: August 2009 This document is restricted and may not be sent outside Navistar, Inc. or reproduced without permission f
10、rom Corporate Technical Standards. Suppliers are required to assume all patent liability. 2009 Navistar, Inc. AUGUST 2009 Page 2 of 6 3.5.7 Cleansing tissue, Kleenex or equivalent 3.5.8 Acetone, reagent grade 3.5.9 No. 212 Eberhard Faber Eraser or equivalent 3.5.10 Cotton, clean 3.5.11 Rubber or pla
11、stic gloves 4.0 PROCEDURE 4.1 Prepare the metal specimens as follows: Clean the metal specimens by washing with hot toluene followed by rinsing with isopropyl alcohol. Rub the surface with cotton dipped in toluene and alundum using enough pressure to remove all surface imperfections. The edges of th
12、e specimens and hole should also be polished. Rewash the specimens as before and wipe with a cleansing tissue. For the final rinse wash with alcohol, handling the specimens with stainless steel or nylon forceps, and allow to dry on glass or stainless steel hooks. CAUTION: Do not use the same alundum
13、 for cleaning different metals as this may transfer metal. 4.2 Assemble ring rod on the air tube. Weigh each specimen to 0.1 milligram and place on the ring rod ready for immediate use. Record as Weight No. 1. 4.3 Place test specimens, ring rod and air tube assembly into the test cell. Add sufficien
14、t test fluid to cover specimens. The height of the test fluid should be 0.25 to 0.50 inch (6 to 12 mm) above the specimens. Install the condenser and then place the assembly in the bath maintained at the specified temperature such that the assembly is immersed above the level of the fluid in the tes
15、t cell. Start clean, dry air through the cell and adjust the flow rate to 50 + 5 milliliters per minute. Start flow of cooling water through condenser. If foam rises to bottom tip of condenser, discontinue the test and restart with clean glassware. If foaming persists, valid test results are not pos
16、sible. 4.4 At the end of the specified time period, shut off the air, and water, and remove the test assembly from the bath. Remove condenser from the assembly. Raise the ring rod air tube assembly to permit the test fluid to drain from the specimens. Remove the test specimens, vapor degrease with t
17、richloroethylene and allow specimens to cool to 70 to 80F (21 to 27C). Weigh each specimen to the nearest 0.1 milligram, record as Weight No. 2. Transfer test fluid and solids, if any, into a 40 ounce (120 milliliter) bottle and retain as Weight No. 2. Transfer test fluid and solids, if any, into a
18、4 ounce (120 milliliter) bottle and retain for determination of precipitation number. Retain test cell for glassware rating as per ”Procedure, 4.8”. 4.5 Clean the metal specimens as follows: 4.5.1 Wash aluminum and steel specimens using cotton and a solution of wetting agent in hot water. 4.5.2 Dip
19、copper and brass specimens in a 10% potassium cyanide solution until the film loosens (usually about a minute). Rinse with hot water, and wash as in step 4.5.1. 4.5.3 After hot water rinse, dry all specimens with acetone. 4.5.4 Lightly rub all the specimens with the eraser to remove any visible drie
20、d water or wetting agent film. 4.5.5 Rinse the specimens with acetone and allow to dry. 4.6 Weigh each specimen and record as Weight No. 3. 4.7 Within one hour of stopping test determine precipitation number of the test fluid recovered from the test cell in step 4.4. Use ASTM D 91 modified with a te
21、st tube per D 2273. NUMBER: CEMS BT-10 TITLE Oxidation Corrosion Test CURRENT ISSUE DATE: August 2009 This document is restricted and may not be sent outside Navistar, Inc. or reproduced without permission from Corporate Technical Standards. Suppliers are required to assume all patent liability. 200
22、9 Navistar, Inc. AUGUST 2009 Page 3 of 6 4.8 Rate the visual condition of the glassware after the test as follows: Rating A B C D Amount of Deposit or Film None Very Light Light to Medium Medium to heavy 5.0 CALCULATIONS 5.1 For each metal, determine the weight loss in milligrams: Weight loss = Weig
23、ht No. 1 - Weight No. 3 5.2 For each metal, determine the weight of the residue deposited on the test specimens in milligrams: Weight of deposit = Weight No. 2 - Weight No. 3 6.0 REPORT Report the following information: 6.1 Weight loss for each metal 6.2 Weight of residue deposited on each metal spe
24、cimen 6.3 Precipitation number of the test fluid after oxidation-corrosion test 6.4 Glassware rating 6.5 The percent change of the Kinematic Viscosity at 100C prior to and after the Oxidation-Corrosion Test per ASTM D 445. 6.6 The infrared scan of fresh oil and of the oil used in the Oxidation-Corro
25、sion Test as per ASTM E1252. NUMBER: CEMS BT-10 TITLE Oxidation Corrosion Test CURRENT ISSUE DATE: August 2009 This document is restricted and may not be sent outside Navistar, Inc. or reproduced without permission from Corporate Technical Standards. Suppliers are required to assume all patent liabi
26、lity. 2009 Navistar, Inc. AUGUST 2009 Page 4 of 6 NUMBER: CEMS BT-10 TITLE Oxidation Corrosion Test CURRENT ISSUE DATE: August 2009 This document is restricted and may not be sent outside Navistar, Inc. or reproduced without permission from Corporate Technical Standards. Suppliers are required to as
27、sume all patent liability. 2009 Navistar, Inc. AUGUST 2009 Page 5 of 6 NUMBER: CEMS BT-10 TITLE Oxidation Corrosion Test CURRENT ISSUE DATE: August 2009 This document is restricted and may not be sent outside Navistar, Inc. or reproduced without permission from Corporate Technical Standards. Suppliers are required to assume all patent liability. 2009 Navistar, Inc. AUGUST 2009 Page 6 of 6
