1、 ENGINEERING MATERIAL SPECIFICATION Material Name Specification Number Date Action Revisions 2002 08 26 Revised Updated and renumbered 1995 01 10 EP00E10460377000 Complete revise, version A2 added K. Wolters 1987 12 18 SM/ EQ 1579 TP Release C. Herriott Printed copies are uncontrolled Page 1 of 2 Co
2、pyright 2002, Ford Global Technologies, Inc. PHOSPHATE SOLUTION, ZINC, ACTIVATING AGENT ESK-M5B373-A PHOSPHATE SOLUTION, ZINC, ACTIVATING AGENT, ESK-M5B373-A2 LIQUID 1. SCOPE The materials defined by these specifications are activating agents for the zinc phosphating process. 2. APPLICATION These sp
3、ecifications were released originally for materials used as activating agents to control crystallisation of zinc phosphate. The materials are added to the wash zone prior to dip or spray phosphating process. 3. REQUIREMENTS 3.1 STANDARD REQUIREMENTS FOR PRODUCTION MATERIALS Material suppliers and pa
4、rt producers must conform to the Companys Standard Requirements For Production Materials (WSS-M99P1111-A). 3.2 COMPOSITION ESK-M5B373-A ESK-M5B373-A2 Phosphate as P20539.0 +/- 4.0 % 3.8 +/- 0.5 % Titanium Complex as Ti 0.9 +/- 0.2 % 0.06 +/- 0.03 % 3.3 TITRATION 3.3.1 ESK-M5B373-A 5.2 +/- 0.5 mL Tit
5、rate 10 mL of a 1 % by weight solution with 0.1 n hydrochloric acid (HCl). Indicator: Bromcresol Green. 3.3.2 ESK-M5B373-A2 3.5 +/- 1.0 mL Titrate 10 mL of a 5 % by volume solution with 0.1 n hydrochloric acid (HCl) to pH 4.0. ENGINEERING MATERIAL SPECIFICATION ESK-M5B373-A/A2 Page 2 of 2 Copyright
6、2002, Ford Global Technologies, Inc. 3.4 pH VALUE 3.4.1 ESK-M5B373-A 7.9 +/- 1 (1 % solution by weight at 20 C) 3.4.2 ESK-M5B373-A2 9.1 +/- 1 (5 %) (5 % solution by volume at 20 C) 3.5 APPEARANCE 3.5.1 ESK-M5B373-A white powder 3.5.2 ESK-M5B373-A2 milky liquid 4. GENERAL INFORMATION The information
7、given below is provided for clarification and assistance in meeting the requirements of this specification. 4.1 The phosphate system released by this specification consists of the following materials: 4.1.1 Phosphate Solution, Zinc, Activator ESK-M5B370-A 4.1.2 Phosphate Solution, Zinc, Precleaner E
8、SK-M5B374-A 4.1.3 Phosphate Solution, Zinc, Alkaline Cleaner ESK-M5B375-A or ESK-M5B372-A 4.1.4 Phosphate Solution, Zinc, Cleaner Additive ESK-M5B358-A 4.1.5 Phosphate Solution, Zinc, Start Up ESK-M5B368-A 4.1.6 Phosphate Solution, Zinc, Make Up ESK-M5B369-A 4.1.7 Phosphate Solution, Zinc, Accelerator S-M5B4514-A 4.1.8 Phosphate Solution, Zinc, Passivating Solution SKM-5B9580-A or S-M5B4518-A 4.1.9 Phosphate Solution, Zinc, pH Correction SKM-5B9580-B 4.1.10 Phosphate Solution, Zinc, Neutralizer S-M5B4513-A 4.1.11 Phosphate Solution, Zinc, Sludge Conditioner ESK-M5B335-A
