FORD-WSE-M1P14-B-2003.pdf
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1、 ENGINEERING MATERIAL SPECIFICATION Date Action Revisions 2003 07 25 Revised Para 3.0 inserted; para 3.1, 3.6, 4 deleted 1990 09 28 C01031540 Revised 3.2 W Janssen N Riley EAO H Nikkel NAAO 1987 08 03 SM/ER112TC Released H Nikkel NAAO NP Riley EAO Printed copies are uncontrolled Copyright 2003, Ford
2、 Global Technologies, Inc. Page 1 of 2 PLATING, HARD CHROMIUM WSE-M1P14-B 1. SCOPE This specification defines performance requirements for electrodeposited hard chromium on metal surfaces. 2. APPLICATION This specification was released originally to define performance criteria for an electrodeposite
3、d hard chromium finish for applications requiring a scuff, wear, and heat resistant surface. 3. REQUIREMENTS All requirements identified for each specification must be met to achieve acceptable field durability. No one requirement, exclusive of others, is capable of ensuring satisfactory performance
4、. Any deviations to the requirements of these specifications may be subject to additional performance requirements. All part testing requirements apply to those areas of the part identified as a significant surface per para 5.1 unless otherwise specified on the engineering drawing. 3.0 STANDARD REQU
5、IREMENTS FOR PRODUCTION MATERIALS Material suppliers and part producers must conform to the Companys Standard Requirements For Production Materials (WSS-M99P1111-A). 3.2 PLATING ADHESION (ASTM B 571) Adhesion of the electroplate to the base metal must conform to the requirements of the grind- saw te
6、st method per ASTM B 571 unless otherwise indicated. This test shall be performed both before and after heating for 4 h at 175 +/- 2 C. No lifting or peeling of the electroplate from the substrate is permitted following the Grind-Saw Test. For chromium plated valves, of reciprocating engines, platin
7、g adhesion shall be assessed by bend test performance in which the valve stem is formed through 90 over a 10 mm radius. Tensile and compression surfaces shall show no flaking when viewed at 10 X magnification; cracking is permitted at these locations. In addition, the finished part shall exhibit no
8、macro cracking, peeling, blisters or flaking when viewed at a nominal magnification X 20 but blemishes and pearls within the master sample range are permitted. Comparison standards, test procedures for bend test and appearance shall form part of the agreed control plan. -,-,- ENGINEERING MATERIAL SP
9、ECIFICATION WSE-M1P14-B Printed copies are uncontrolled Copyright 2003, Ford Global Technologies, Inc. Page 2 of 2 3.3 PLATING THICKNESS (ASTM B 659) It is the suppliers responsibility to identify the plating thickness distribution for each unique part design and rack design by mapping the plating r
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