1、 ENGINEERING MATERIAL SPECIFICATIONDate Action Revisions 2004 10 25 Revised Inserted 3.0; Deleted 3.1, 3.2, 3.3, 3.6, 3.7 “as molded“ and after exposure to 163 +/- 2 C for 30 min using the Micrometal Manufacturing Company “Microcorder“ equivalent equipment. Each reading will be the average of four 1
2、3 mm segments along a 51 mm micrometre reading of the entire part. 3.5.2 Long Term Waviness Parts shall exhibit no more waviness than the Ford minimum acceptance part approved by the affected product engineering office. Test parts shall be painted black with a paint having the same specular gloss as
3、 the minimum acceptance part for comparison. 3.5.3 Physical Properties Specific requirements for physical properties of molded parts, such as impact strength, flexibility, etc., where required, shall be specified on the engineering specification (ES). 3.5.4 Heat Resistance Test Method: Expose sample
4、s in a mechanical convection oven to achieve a surface temperature of 163 +/- 2 C for 30 min. 3.5.4.1 Unpainted Parts or Assemblies Shall not exhibit any surface imperfections such as blisters, pits, dry spots or cracks, etc. Surface imperfections shall be determined using a red concentrate dye in o
5、il suspension (Magnaflux Corporation No. 9CM or equivalent). 3.5.4.2 Painted Parts or Assemblies Shall not exhibit any surface cracking, pitting, warpage or blistering of any type. ENGINEERING MATERIAL SPECIFICATIONESB-M3D105-BPrinted copies are uncontrolled Copyright 2004, Ford Global Technologies,
6、 LLC Page 4 of 4 3.5.5 Adhesive Bonded Assemblies All parts which are bonded with a normal adhesive system used for glass fiber reinforced polyester shall meet the requirements of ESB-M11P27-A. 3.5.6 Paintability Molded parts shall be processed in keeping with the best commercial practice to insure
7、good paintability, i.e., “as molded“ surface shall be free of contaminants which would affect paint adhesion, when painted in accordance with released Ford Motor Company specifications for painting glass fiber reinforced polyester plastics. Exterior, highly visible parts which are furnished primed,
8、or fully painted shall conform to the requirements of Engineering Performance Specification ESB-M2P7-B1. 5. GENERAL INFORMATION The information given below is provided for clarification and assistance in meeting the requirements of this specification. 5.1 SPECIFICATION REFERENCE ESB-M2P7-B1 - “Paint
9、 Quality, Fiberglass Body Parts - Exterior“. 5.2 COEFFICIENT OF LINEAR THERMAL EXPANSION 1.6 - 3.2 x 10-5/ C (ASTM D 696) 5.3 FLEXURAL FATIGUE STRENGTH 5.3.1 ASTM D 671, Type A unnotched No cracking specimens, 500,000 cycles, 31 MPa reverse stress 5.3.2 Owens-Corning Technical Paper No cracking “TC-RPL-69-30“ (Load input required to obtain +/- 10 and 1,000,000 cycles)
