1、 ENGINEERING MATERIAL SPECIFICATION Date Action Revisions 2007 06 22 Revised Inserted 3.0; Deleted 3.4 1978 10 06 Metricated and Retyped CAH1-RD572066-112 1965 06 11 Released CAV1-DR500185 Printed copies are uncontrolled Copyright 2007, Ford Global Technologies, LLC Page 1 of 3 CERAMIC FINISH, FUSED
2、 - BRONZE ALLOYS ESB-M12P1-B 1. SCOPE This specification defines the performance requirements for the finish of bronze surfaces which are electroplated after application of a fused glass, porcelain or vitreous type finish. 2. APPLICATION This specification was released originally for a finish used o
3、n bronze surfaces to produce a jewelry appearance for exterior or interior automotive parts. It is specified where corrosion protection and appearance are the primary requisites. 3. REQUIREMENTS 3.0 STANDARD REQUIREMENTS FOR PRODUCTION MATERIALS Material suppliers and part producer must conform to t
4、he Companys Standard Requirements For Production Materials (WSS-M99P111-A). 3.1 HEAT RESISTANCE No change in color of the ceramic after 30 min exposure at 150 +/- 2 C. 3.2 WEATHERING RESISTANCE The finished parts shall show no change in color or fading when exposed as follows: . Florida Exposure (Mi
5、ami Area) 160,000 langleys minimum at 45 C facing south (approximately 1 year). . Accelerated Weathering 400 h in Atlas XW Weatherometer minimum. 3.3 PLATING REQUIREMENTS 3.3.1 Appearance All parts shall have a bright finish unless otherwise specified on the engineering drawing. The plated parts sha
6、ll be free from surface imperfections such as rough or orange peel conditions, crazing, cold shuts, pits, slivers, dullness, stains, discoloration, breaks in the plate, and wheel marks or buff lines to the extent required by specifications for the visual inspection of appearance items established by
7、 Product engineering. ENGINEERING MATERIAL SPECIFICATION ESB-M12P1-B Printed copies are uncontrolled Copyright 2007, Ford Global Technologies, LLC Page 2 of 3 3.3.1.1 Buffing of Chromium Plating Because of the potential adverse effects on corrosion resistance, buffing of final chromium plating on ex
8、terior parts is not permitted. 3.3.2 Adhesion The plate shall adhere to the base metal and show no separation between layers of plate when tested as follows: 3.3.2.1 Sawing Position the part in a vise or holding fixture so that the significant plated surface is perpendicular to the new blade and the
9、 cutting motion of the blade is in a direction which tends to pull the plating away from the base metal. 3.3.2.2 Bending Any section of the part containing a significant plate surface shall be positioned in a vise or holding fixture and subjected to repeated bending until fracture of the section. 3.
10、3.3 Plating Thickness Minimum plating thickness requirements for significant surfaces are shown in para 3.3.3.3. 3.3.3.1 Significant Surfaces All surfaces visible on a part as assembled in a vehicle or surface which can be the source of corrosion products visible on an assembled vehicle are signific
11、ant surfaces. Except as noted on the engineering drawing, all significant surfaces shall meet the plate thickness requirements, as detailed in 3.3.3.3. Studs or threads shall be completely plated, but shall not be considered as significant surfaces, unless so indicated on the engineering drawing. 3.
12、3.3.2 Plating Thickness Measurement (ASTM A 219) The optical measurement of copper and nickel deposits on significant surfaces shall be considered the standard thickness test method. The chromium plate thickness on significant surfaces shall be checked by the spot test as described in ASTM A 219 or
13、by the deplating electronic test, ASTM B 504, Determination of Thickness of Chromium Plate. In case of differences, ASTM B 504 shall be the umpire method. ENGINEERING MATERIAL SPECIFICATION ESB-M12P1-B Printed copies are uncontrolled Copyright 2007, Ford Global Technologies, LLC Page 3 of 3 3.3.3.3
14、Minimum Plating Thickness Interior Exterior Cloisonne Cloisonne Copper _ _ Nickel 0.00030 in 0.00075-0.00090* in (8 mm) (19.5-23 mm) Chromium 0.000005 in 0.000010 in (0.13 mm) (0.25 mm) *Note: The maximum plating thickness 0.00090 in (23 mm) can be exceeded provided the parts are acceptable from an appearance standpoint. 3.3.3.4 Cass Test (exterior parts)*, min 16 h (FLTM BQ 105-01) No evidence of pitting or green corrosion products on the electroplated bronze. *Note: Corrosion resistance for interior parts is controlled by plating thickness.
