1、 ENGINEERING MATERIAL SPECIFICATION Material Name Specification Number Date Action Revisions 2002 08 28 Revised Updated and renumbered 1999 08 16 Activated P. Osman Printed copies are uncontrolled Page 1 of 2 Copyright 2002, Ford Global Technologies, Inc. PHOSPHATE SOLUTION, ZINC, ALKALINE PRECLEANE
2、R WSS-M5B410-A1 TRIETHANOLAMINE BASED CLEANER PHOSPHATE SOLUTION, ZINC, ALKALINE PRECLEANER WSS-M5B410-A2 FATTY PHOSPHORIC ACID CORROSION PROTECTIVE ADDITIVE PHOSPHATE SOLUTION, ZINC, ALKALINE PRECELEANER WSS-M5B410-A3 BIODEGRADABLE SURFACTANT ADDITIVE PHOSPHATE SOLUTION, ZINC, ALKALINE PRECLEANER W
3、SS-M5B410-A4 BIODEGRADABLE WETABILITY ADDITIVE 1. SCOPE The materials defined by these specifications are the boron and nitrite free component chemicals of an alkaline precleaner system. 2. APPLICATION This specification was released originally to define the performance of precleaner chemicals used
4、just prior to full body tricationic zinc phosphating to prevent corrosion during the summer months when the humidity is high. 3. REQUIREMENTS 3.1 STANDARD REQUIREMENTS FOR PRODUCTION MATERIALS Material suppliers and part producers must conform to the Companys Standard Requirements For Production Mat
5、erials (WSS-M99P1111-A). 3.2 pH VALUE A1 A2 ASTM E 70 (10 g/L) 8.9 +/- 0.5 7.7 +/-0.5 3.3 DENSITY (ASTM D 1475 Kg/L) A1 A2 1.055+/- 0.03 1.150+/- 0.03 A3 A4 1.010+/-0.03 0.990+/-0.03 ENGINEERING MATERIAL SPECIFICATION WSS-M5B410-A1/A4 Page 2 of 2 Copyright 2002, Ford Global Technologies, Inc. 3.4 TI
6、TRATION (TOTAL ALKALINITY) A1 A2 24.0 +/- 4.0 mL 15.0 +/- 4.0 mL Titrate 100ml of 10 g/L solution with 0.05M sulphuric acid until color changes from blue to yellow-green with Bromocresol Green. 3.5 ACTIVE MATERIAL A3 A4 50.0 +/- 4.0 % 23.2 +/- 2.0 % 3.6 CORROSION PROTECTION PROPERTY The film remaini
7、ng on the parts after treatment with 20 g/L WSS-M5B410-A1 shall protect the surface from corrosion for a minimum of 72 hours when stored in closed spaces under normal atmospheric conditions. 3.7 CLEANING EFFICIENCY During spray processing, the material (approx. 20 g/L WSS-M5B410-A1) shall remove gre
8、ase residues and metal dust from the bodies in white. The substrate will not be attacked by the cleaner (including zinc coated steel). 3.8 RINSING EFFICIENCY The dried film shall be easily removable with water from the washed parts without leaving residues. 3.9 PASSIVATION EFFECTIVENESS The material shall have no deleterious effect on the subsequent phosphating process.
