FORD WSB-M29G1-B-1992 EDGEWORK REQUIREMENTS AUTOMOTIVE SAFETY GLASS《汽车安全玻璃的磨边要求》.pdf
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1、 ENGINEERING MATERIAL SPECIFICATIONMaterial Name Specification NumberDate Release No. Release/Revision1992 01 31 NB00I10043054150 Released TRB R.D. Moore LWMWP 3948-a Page 1 of 4 EDGEWORK REQUIREMENTS, AUTOMOTIVE SAFETY GLASS LWSB-M29G1-B1. SCOPEThi s specification defines the basic requirements for
2、 automotive safetyglass edgework, including definitions, manufacturing imperfections, anddimensions.2. APPLICATIONTh is specification was released originally for edgework requirements forsafety glass used in glazing motor vehicles. Edges shall be treated inac cordance with SAE recommended Practice J
3、673a, “Automotive Glazing“,August 1967, which is incorpora ted by reference in FMVSS 205, February 23,1984.3. REQUIREMENTS3.1 STATISTICAL PROCESSSupplie rs must conform to the requirements of Ford Quality SystemStand ard Q-101. A mutually acceptable Control Plan as describedtherein is required for m
4、aterial/source approval. Appropriatestatist ical tools must be used to analyze process/product data sothat variation in the final product is continuously reduced.3.2 CONDITIONING AND TEST CONDITIONSAll test values indicated herein are based on ma terial conditioned ina control led atmosphere of 23 +
5、/- 2 C and 50 +/- 5 % relativehumidity for not less than 24 h prior to testing and tested under thesame conditions unless otherwise specified.L3.3 TYPE 1 CROWN, SEMI-SATIN FINISH EDGEDen otes radius as indicated, fine ground to a semi-satin finishhaving smooth even surface without luster. Typi cal f
6、or exposed edgessuch as on ventilators, door lights, and quarter lights. Must conformto SA E J673a, Edge No. 1 Occasional flake chips 1.6 mm diameterpermitted (edge or crown). Occasional shiners 3 .2 mm diameter or 1.6mm wide by 13 mm long permitted.Minimum radius 1/2 glass thicknessMaximum radius a
7、pproximately 6 mmENGINEERING MATERIAL SPECIFICATIONLWSB-M29G1-BWP 3948-b Page 2 of 4 3.4 TYPE 2 CROWN, SEMI-SATIN FINISH EDGESimilar to Type 1, except the arc of the grind m ay have gaps anywherealo ng the edge, where the central portion of the edge is below thegeneral contour. These gaps are known
8、as “shine rs“. Flake chips mayalso occur. Overlap or slip is permissible on these edges not toexceed 0 .8 mm. These edges are characteristic of edges which areconcealed but intended to slide in guides as vertical edges of doorlights, body lights, etc.Minimum radius 1/2 glass thicknessMaximum radius
9、approximately 6 mm3.5 TYPE 3 SEAMED (CHAMFERED) EDGEDe notes original edge ground off as indicated. Flake chips andshiners permitted. Overlap of 0.8 mm permitted on flat glass, 1.6 mmpermitted on curved windshields only. Typical for framed laminatedglass and all heat treated safety float glass. Viny
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