1、 ENGINEERING MATERIAL SPECIFICATION Material Name Specification Number Date Action Revisions Rev 03 2011 12 15 N Status A2 No Usage S. Ryzyi, NA 2002 09 23 Revised Updated and renumbered 1991 09 12 NEO1E10127076025 Released Pam Lee Controlled document at www.MATS Page 1 of 5 Copyright 2011, Ford Glo
2、bal Technologies, Inc. LAMINATED SOUND/VIBRATION STEEL SHEET WSE-M1A321-A1 LAMINATED SOUND/VIBRATION STEEL SHEET NOT FOR NEW DESIGN WSE-M1A321-A2 1. SCOPE The material defined by these specifications is a multi-layered composite structure designed to be used in place of sheet steel where vibration d
3、amping is required for noise reduction. This material consists of a viscoelastic polymer material sandwiched between two sheets of steel such as low carbon, cold rolled, aluminum-killed-draw-quality per WSD-M1A333-A1 thru A4. This material is fully weldable and does not require any special schedules
4、 or fixtures. Specification WSS-M1P94-A shall be used where precoating by the steel supplier is required. 2. APPLICATION 2.1 These specifications were released originally for the following applications: A1: Body panels, brackets, and special application heat shields. A2: Oil pans and baffles, valve
5、covers, engine covers, and brackets. 2.2 The two grades listed cover the operating temperature ranges listed below, over which their damping characteristics are optimized at a loss factor of = n= .1. 3. REQUIREMENTS ENGINEERING MATERIAL SPECIFICATION WSE-M1A321-A1/A2 Page 2 of 5 Copyright 2011, Ford
6、 Global Technologies, Inc. 3.1 STANDARD REQUIREMENTS FOR PRODUCTION MATERIALS Material suppliers and part producers must conform to the Companys Standard Requirements For Production Materials (WSS-M99P1111-A). 3.2 TEST CONDITIONS The results described herein are applicable under ambient temperatures
7、 and humidity unless otherwise noted. 3.2.1 Shear adhesion tests performed using standard 25 x 25 mm overlap shear panels. A1 A2 Shear Strength Shear Strength (MPa) (MPa) Initial (laminate as produced) 2 min 5 min a) 40 minutes at 450 F 2 min - b) 1 hour at 375 F - 5 min c) 10 days at 300 F 2 min -
8、d) 10 days at 225 F - 5 min Humidity (100 % relative humidity) a) 250 hours at 100 F 2 min 5 min Environmental Cycle (after 5 cycles of the following schedule): a) 24 hours at 100 F 24 hours at - 20 F 24 hours at 225 F 2 min 5 min Salt Spray (250 hours exposure) 2 min 4 min Oil Immersion (various Mo
9、tor Oils) a) 1 hour at 300 F 2 min - b) 10 weeks at 300 F - 5 min Forming Lubricant Soak Test a) 1 week at ambient temperature 2 min - ENGINEERING MATERIAL SPECIFICATION WSE-M1A321-A1/A2 Page 3 of 5 Copyright 2011, Ford Global Technologies, Inc. 3.3 METAL SKINS AND APPEARANCE Composition and overall
10、 thickness as specified on Engineering drawing. Thickness of polycore material to be 0.025 +/- .005 mm. Total thickness tolerance to be twice that of the two individual sheets of steel. Generally, conform to the relevant Ford steel specifications such as WSS-M1A333-A1 thru A4. 3.4 METAL SURFACE TREA
11、TMENT May be supplied with outside surfaces protected from corrosion via application of oils or coated with lubricants to enhance drawability and formability; or per Ford Engineering drawing. These materials shall not interfere with subsequent paint or other protective systems. 3.5 PAINTABILITY Mate
12、rial supplied to these specifications must have prior approval for paintability by the responsible Materials Engineering activity. This approval shall be based on samples prepared to the local process and performance requirements appropriate to the country of vehicle manufacture. 3.6 PAINT INTERACTI
13、ON There shall be no visible interruption to the painted surface of the laminated steel caused by gas off of the polymer sandwich material during the normal bake cycles: 3.6.1 Electrocoat: 10 minutes at or above 182 C, maximum 205 C 3.6.2 Primer: 10 minutes at or above 149 C, maximum 177 C 3.6.3 Ena
14、mel: 10 minutes at or above 130 C, maximum 146 C Visible interruptions would include craters where there is complete separation of paint and the surface below is visible. It would also include ghosting or fuzziness in the surface gloss caused by interaction of materials. This test requires running p
15、anels with and without the polymer sandwich material and comparing the gloss levels (FLTM BI 106-01). The polymer sandwich material also must not produce by products in the bake cycle that would create any type of build up in the ovens that would generate dirt. ENGINEERING MATERIAL SPECIFICATION WSE
16、-M1A321-A1/A2 Page 4 of 5 Copyright 2011, Ford Global Technologies, Inc. 3.7 WELDABILITY The composite shall be capable of being safely welded to produce acceptable weld quality with minimal acoustic property degradation by shielded arc, resistance welding, MIG, or TIG welding. Welding parameters ar
17、e similar to those of standard solid metal substrates. When determining proper weld schedules, it is recommended that the composite be treated as individual metal skins, rather than homogeneous substrate when determining welding amperage and pressures. 4. GENERAL INFORMATION The information below is
18、 provided for clarification and assistance in meeting the requirements of these specifications. 4.1 PANEL PREPARATION Cut or sheared test panels (300 x 300 mm) shall be taken from an as-received production coil. Care should be taken while removing test samples to ensure a scratch-free surface. Prior
19、 to performing any adhesion or salt spray test, the surface should be washed with warm water and thoroughly dried to remove any water soluble drawing compounds. Prior to salt spray testing the edges of each panel shall be sealed with PVC tape, air drying paint and/or wax to prevent rust bleeding. As
20、 the sketch in Fig. 2 describes, take a metal-to-metal composite (150 x 25 mm) and cut one skin 63 mm from one end and then cut another skin 63 mm from the other end on the opposite side of the laminate leaving a 25 mm square lap sample. Use an Instron type tensile testing machine and pull in the ax
21、ial direction and record the pounds needed to cause failure. The maximum force (in Newtons) is divided by .0645 m2 (25 x 25 mm), because that is the contact area to give units in N/m2. Cross head speed is 1.25 mm/minute. ENGINEERING MATERIAL SPECIFICATION WSE-M1A321-A1/A2 Page 5 of 5 Copyright 2011, Ford Global Technologies, Inc. 4.2 PAINTABILITY Material supplied shall meet the requirements of WSS-M2P180-A.
