FORD FLTM BI 019-01-2001 TEST PROCEDURES FOR THICKNESS MEASUREMENT OF CLEAR SYNTHETIC BAKING ENAMEL COATING ON SYNTHETIC WOOD《测定合成木材上的透明合成烘漆的厚度的试验方法》.pdf
《FORD FLTM BI 019-01-2001 TEST PROCEDURES FOR THICKNESS MEASUREMENT OF CLEAR SYNTHETIC BAKING ENAMEL COATING ON SYNTHETIC WOOD《测定合成木材上的透明合成烘漆的厚度的试验方法》.pdf》由会员分享,可在线阅读,更多相关《FORD FLTM BI 019-01-2001 TEST PROCEDURES FOR THICKNESS MEASUREMENT OF CLEAR SYNTHETIC BAKING ENAMEL COATING ON SYNTHETIC WOOD《测定合成木材上的透明合成烘漆的厚度的试验方法》.pdf(8页珍藏版)》请在麦多课文档分享上搜索。
1、 FORD LABORATORY TEST METHOD BI 019-01 Date Action Revisions 2001 03 13 Revised Editorial no technical change A. Cockman 1992 06 19 Printed copies are uncontrolled Page 1 of 8 Copyright 2001, Ford Global Technologies, Inc. TEST PROCEDURES FOR THICKNESS MEASUREMENT OF CLEAR SYNTHETIC BAKING ENAMEL CO
2、ATING ON SYNTHETIC WOOD Application The following procedures describe the use of the Zeiss light section microscope for the nondestructive thickness measurement of clear synthetic baking enamel coatings on synthetic wood exterior trim for station wagons. This light section microscope has been specia
3、lly designed for testing and measuring the surface quality of production parts. The operating procedures in the instrument manual are limited to this application only. However, this instrument, having its design based upon the light section principle, has been found to be adaptable to the measuremen
4、t of thin film thicknesses of any transparent coating over both magnetic and nonmagnetic surfaces. (Reference: Special Report MDJA 8112.4-5 “A Nondestructive Method for Measuring the Thickness of Thin Transparent Coatings over Metallic and Nonmetallic Surfaces“, by T.M. Mansour, Process Development
5、Dept., Manufacturing Engineering & Development Office, Manufacturing Staff, March 1962 - Job Nos. 1-H-64 and 2-A-38. Apparatus Required Zeiss Light Section Microscope The basic light section microscope unit, shown in attached photograph, consists of the following major components: 1. A microscope wi
6、th built-in illumination device, built-in measuring eyepiece, and two pairs of objectives for 200X and 400X total magnifications respectively. 2. A stand with stage plate. 3. Three 6-volt, 5-watt incandescent lamps in centering mounts (two as spares). 4. A power supply unit for 110 volt, 60 cycle op
7、eration. 5. A dust protection sheath. COPYRIGHT Ford Motor CompanyLicensed by Information Handling ServicesFORD LABORATORY TEST METHOD BI 019-01 Page 2 of 8 Copyright 2001, Ford Global Technologies, Inc. 6. Instrument manual Note: This light section microscope is manufactured by: Carl Zeiss, Inc. 48
8、5 Fifth Avenue New York 17, New York The local distributor is: Harshaw Scientific Co. 9240 Hubbell Avenue Detroit, Michigan The ordering code number for the above mentioned basic equipment is 60/49/99. 7. A mechanical stage with V-bearings is available as a supplementary accessory (Code No. 60/49/96
9、). This was found to be quite helpful in positioning relatively small test samples. Flat Glass Reference Surface A flat glass reference surface is required for proper alignment of the slit image. This is recommended to be an approximately 2 x 2 inch piece of plate glass, of 1/32 inch minimum thickne
10、ss. Sample Holder The sample holder is recommended to be a clamping device (or equivalent), compatible with the size and shape of the samples to be tested, which will facilitate positioning the test sample so that the test area is very nearly normal to the axis of the microscope. The test area is ap
11、proximately 1/16 inch long and of negligible width. Conditioning and Test Conditions All test values indicated herein are based on material conditioned in a controlled atmosphere of 23 +/- 2 C and 50 +/- 5 % relative humidity for not less than 24 h prior to testing and tested under the same conditio
12、ns unless otherwise specified. COPYRIGHT Ford Motor CompanyLicensed by Information Handling ServicesFORD LABORATORY TEST METHOD BI 019-01 Page 3 of 8 Copyright 2001, Ford Global Technologies, Inc. Procedure A. Instrument Set-Up 1. Place the instrument on a flat and relatively vibration-free surface.
13、 2. Insert the instrument cable into the plug of the power supply unit and connect the latter to a 110 volt, 60 cycle power line. 3. Switch the power supply unit on by setting the knob provided to any mark between 1 and 8 on the graduated disc. This setting may later be changed to obtain a desired l
14、evel of illumination. B. Initial Focus and Alignment 1. Focus the cross lines, visible through the eyepiece, as outlined in the instrument manual (supplied by the manufacturer). 2. Place the flat glass reference surface on the stage plate. The surfaces of this glass piece must be thoroughly clean -
15、free of fingerprints, grease film, etc. 3. Looking into the eyepiece, lower the microscope body by turning the vertical drive knob slowly, to obtain a well-focused light band. 4. This light band should be parallel to the horizontal portion of the cross-lines. If it is not parallel, it should be alig
16、ned accordingly by means of the knob provided, as outlined in the instrument manual. Once this light band has been properly aligned, the aligning knob should not be touched in the course of instrument operation. 5. By means of the vertical drive knob, elevate the microscope body to a safe clearing d
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