NALFA-LF-01-2008.pdf
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1、 LAMINATE FLOORING SPECIFICATIONS AND TEST METHODS NALFA Standards Publication LF 01-2008 LAMINATE FLOORING Published by North American Laminate Flooring Association 2008 by North American Laminate Flooring Association North American Laminate Flooring Association 2008, The North American Laminate Fl
2、ooring Association, all rights reserved. The attached/aforementioned document is the property of “NALFA“; it represents the consensus efforts of that Organization and its membership; which is comprised of manufacturers, distributors, materials providers, and ancillary entities. NALFA bears no respon
3、sibility and disclaims all liability for information/material contained in the Document which may subsequently be changed. TABLE OF CONTENTS FOREWORD. SECTION 1 GENERAL 1.1 Scope 1.2 Referenced Standards 1.3 Fire Rating 1.4 Visual Inspection. 1.5 Conditioning 1.6 Definitions. SECTION 2 PERFORMANCE P
4、ROPERTIES AND VALUES 2.1 Performance Properties SECTION 3 TEST METHODS 3.1 Static Load 3.1.1 Scope. 3.1.2 Test Apparatus 3.1.3 Specimens. 3.1.4 Procedure 3.1.5 Calculations . 3.1.6 Report 3.1.7 Precision however each is dependent upon the other. The first is bearing wear (looseness), the second is s
5、haft wear and the third is alignment of the arms. They are addressed without any order of priority below. A.2 Apparatus A.2.1 Calibration block of preferably steel measuring 77.9 x 77.9 x 25 mm (3.07 x 3.07 x 1 in.) with a hole drilled and threaded with UNF 6.35mm (1/4 in) in the centre 38.95 0.02 m
6、m (1.53 in +/- 0.001 in) of the 77.9 x 77.9 mm (3.07 x 3.07 in.) face such that the block can be threaded onto the holder disc of the abrader. All edges shall be made with a radius of 1 mm (0.039 in). A.2.2 Feeler gages of various thickness. A.2.3 Shim washers of various thickness ranging from 0.05
7、mm (0.002 in) and up. The inside diameter shall be 8 mm (0.32 in) and the outside diameter shall be 13 mm (0.51 in). A.3 Procedure A.3.1 Bearing Wear a) Examine each arm of the abrader visually and by hand for any bearing wear. Specific areas to examine are the pivot areas of the abrader arm and the
8、 shaft on which the wheel revolve. This includes but is not limited to any sideways, twisting, or other motion outside the specific rotation of the arm or the shaft. Any movement noted other than the pivoting of the arm or shaft requires that further examination be made to determine the cause of the
9、 excess movement. b) Specific repairs shall be completed before attempting subsequent portions of the procedure. A.3.2 Shaft Wear a) In certain instances, the shaft for the abrader wheel may slide end to end. This movement must be eliminated by placing shim washers of appropriate thickness between t
10、he bearing face and the shaft keeper ring on the end of the shaft opposite the abrader wheel mounting. This can be measured using the feeler gauges to measure the gap prior to disassembly and the appropriate thickness of shim washers placed on the shaft. A.3.3 Alignment a) Remove the rubber wheels f
11、rom their respective shaft mounting and set aside. Remove the rubber mat on the sample table (if used). b) Attach the calibration block to the table by the threaded mount. c) Gently lower the arms with the exposed shaft ends onto the block. Rotate the block to square the block with the shaft face of
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