GSA GGG-B-440B-1964 BLADE CIRCULAR SAW WOODCUTTING《伐木圆锯刀片的标准规格》.pdf
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1、GGG-B-4408 32 7777774 0025325 4 W GGGB-440b i September 25, 1961 SUPERSEDING Jane 20, 1958 I Fed. Spec GGG-B-440. . FEDERAL SPECIFICATION BLADE, CIRCULAR SAW, WOODCUTTING iec, General SefvioG8 Adminutration, fot the we of au Fodrtal a# Pressure Sensitive Adhesive, Waterproof-For Pack- aging and Seal
2、ing. PPP-T-i over 10-inch diameter, plus or minus 6 percent. Number of teeth : Lateral runout: Plus or minus 10 percent. Lateral or transverse runout as meas- ured just insido the tooth gullet line shall not exceed 0,0004-inch per inch of blade diameter-static measure- ment total indicating reading
3、(T.I.R.). Peripheral runout as measured at the tips of the cutting teeth shall not ex- ceed 0.0006 inch per inch of blade di- ameter-static measurement T.I.R. 3.7 Identification marking. Each blade shall be permanently marked with the man- ufacturers name or with a trademark of such known character
4、that the source of manufacture mar-be, read evidence of cracks, segregations, seams, ham- mer marks, or high spots; blade warped. Blade thickness not uniform within the specified tolerance (flat ground blades only). Blade thickness at rim, thinnest circle, or collar not uniform within the specified
5、tolerance (hollow ground blades only). 106 107 Minor: 201 202 203 204 - 205 .specified tolerance. Teeth not the required style. Teeth not spring set and bevel filed as required; evidence of nicks, fins, or burrs. Blade thickness not within the speci- fied tolerance (flat ground bladea only), Blade t
6、hickness at rim, thinnest circle, or collar not wit-hin the speci- fied tolerance (hollow ground blades only). Rim diameter not within the specified tolerance. Number of teeth not within the speci- fied tolerance. Marking, manufacturers name or trademark missing, illegible, or not permanent. 4.3.1 C
7、racks and imperfections. Each of the sample blades shall be examined to de- termine full compliance with 3.1. Any indica- tion of flaws, cracks, or imperfections shall be grounds for rejection. Examination shall be performed by a process subject to the ap- proval of the bureau or activity concerned.
8、 Unless otherwise specified (see 6.2), exami- nation shall be performed in accordance with MIEI-6868. 4.4 Hardness test. Each of the sample blades selected in accordance with 4.2.3 shall be subjected to a Rockwell hardness test to determine compliance with 3.3. If any blade in the sample fails this
9、test, this shall be cause for rejection of the lot represented by the sample. 4.4.1 Possible test failures. Possible test failures are defined as follows: (a) Hardness. (1) Hardness of blade not within the specified values on the Rockwell C scale. 4.5 Examination of preparation for deliv- ery. The p
10、reservation, packaging, packing, and marking shall be examined to determine compliance with the requirements of section 5 of this specification. 7 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-GGG-B-440B 32 7777779 0025332 L mGGGB-440b 5. PREPARATI
11、ON FOR DELIVERY (For civil agencies, Fed. Std. No. 102 should be referred to for definitions and applications of the various levels of pack- aging protection for scpplies and equipment.) 5.1 Preservation and packaging. Preserva- tion and packaging shall be level A, B, or C, as specified (see 6.2). 5
12、.1.1 Level A. Except for chrome-plated blades, cleaning preservation, and pack- aging of all blades shall be in accordance with MIL-P-116, as applicable. Blades with chrome plating completely covering all sur- faces, and applied after sharpening of teeth, need not be coated with grease. Lacquered bl
13、ades shall not be cleaned. 5.1.1.1 Blades weighing less than 10 pounds. Unless otherwise specified in the contract or order (see 6.2), blades weighing less than 10 pounds shall be completely coat- ed with type P-1 preservative and individu- ally wrapped with greaseproof barrier-mate- rial conforming
14、 to type II, grade A, class 1 of MIL-B-121, and secured in place with pressure-sensitive tape conforming to type II, class 1 of PPP-T-60. The wrapped blades shall be individually packaged or, when spec- ified (see 6.2), packaged together in quan- tities not to exceed 6 blades in snug-fitting fiberbo
15、ard boxes conforming to PPP-B-636. Cellulosic cushioning material conforming to type III, class C of PPP-C-843 shall be pro- vided to prevent damage to the saw blade teeth and to the boxes. Boxes conforming to PPP-B-636 shall be closed and sealed in conformance with the appendix to the box specifica
16、tion, and, in addition, all joints and seams, including those occurring in the man- ufacture of the boxes, shall be covered with minimum 2-inch-wide pressure sensitive tape conforming to PPP-T-76, extended over all corners and edges at least 3 inches. Boxes conforming to PPP-B-636 shall be closed an
17、d sealed in accordance .with the appendix thereto. 5.1.1.1.1 Alternate methods. 5.1.1.1.1.1 When specified (see 6.2), the cleaned blades shall be dipped in a thin film of preservative oil and covered on both sides with a sheet of vapor-phase inhibitor paper in accordance with MIL-P-3420. Blades shal
18、l be separated with a layer of corrugated fiberboard to provide cushioning and protection and shall be unit protected by a suitable submethod IA in accordance with MIL-P-116. 5.1.1.1.1.2 When specified (see 6.2), blades after cleaning shall be unit protected by method IB-1 in accordance with MIL-P-
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