1、 MIL-PRF-9954D 16 April 2009 Superseding MIL-PRF-9954C 31 January 2008 PERFORMANCE SPECIFICATION GLASS BEADS: FOR CLEANING AND PEENING This Specification is approved for use by all Departments and Agencies of the Department of Defense. 1. Scope 1.1 Scope. This specification covers glass beads to be
2、used with pressure/suction type blasting equipment. 1.2 Classification. Glass beads will be of one type and 13 sizes as specified in Table 1. 2. Applicable Documents. 2.1 General. The documents listed in this section are specified in sections 3, 4, or 5 of this specification. This section does not i
3、nclude documents cited in other sections of this specification or recommended for additional information or as examples. While every effort has been made to ensure the completeness of this list, document users are cautioned that they must meet all specified requirements of documents cited in section
4、s 3, 4, or 5 of this specification, whether or not they are listed. 2.2 Government documents AMSC N/A FSC 5350 Comments, suggestions, or questions on this document should be addressed to WR-ALC/642 CBSG, 295 Byron Street, Robins AFB, GA 31098-1611. Since contact information can change, you may want
5、to verify the currency of this address information using the ASSIST database at http:/assist.daps.dla.mil Inch-PoundProvided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-PRF-9954D 2 2.2.1 Specifications, standards, and handbooks. The following specific
6、ations, standards, and handbooks form a part of this document to the extent specified herein. Unless otherwise specified, the issues of these documents are those cited in the solicitation or contract. FEDERAL STANDARDS U.S. ENVIRONMENTAL PROTECTION AGENCY EPA 3052 Microwave Assisted Acid Digestion o
7、f Siliceous and Organically Based Matrices EPA 6010B Inductively Coupled Plasma-Atomic Emission Spectrometry (Copies of these standards may be found online at http:/www.epa.gov/ or at U.S. Environmental Protection Agency, Ariel Rios Building, 1200 Pennsylvania Avenue, N.W., Washington, DC 20460 DEPA
8、RTMENT OF DEFENSE STANDARDS MIL-STD-129 MILITARY MARKING FOR SHIPMENT AND STORAGE (Copies of these documents are available online at http:/assist.daps.dla.mil/quicksearch or http:/assist.daps.dla.mil or from the Standardization Document Order Desk, 700 Robbins Avenue, Building 4D, Philadelphia, PA 1
9、9111-5094.) 2.3 Non-Government publications. The following documents form a part of this document to the extent specified herein. Unless otherwise specified, the issues of these documents are those cited in the solicitation or contract. AMERICAN SOCIETY FOR QUALITY ANSI/ASQ Z1.4 Sampling Procedures
10、and Tables for Inspection by Attributes ANSI/ASQ Z1.9 Sampling Procedures and Tables for Inspection by Variables for Percent Nonconforming ASQ Standards may be purchased from the American Society for Quality, 600 North Plankinton Avenue Milwaukee, WI 53203 or at http:/www.asq.org Provided by IHSNot
11、for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-PRF-9954D 3 AMERICAN SOCIETY FOR TESTING AND MATERIALS ASTM C-169 Standard Test Methods for Chemical Analysis of Soda Lime and Borosilicate Glass ASTM D 1214-58 Standard Test Method for Sieve Analysis of Glass Spheres
12、 ASTM Standards may be purchased from the American Society for Testing and Materials, 100 Barr Harbor Drive, West Conshohocken, Pennsylvania 19428 or at http:/www.astm.org 2.4 Order of precedence. Unless otherwise noted herein or in the contract, in the event of a conflict between the text of this d
13、ocument and the references cited herein, the text of the document takes precedence. Nothing in this document, however, supersedes applicable laws and regulations unless a specific exemption has been obtained. BEAD SIZE - % ROUND, MIN - % PASSING 1 2 3 4 5 6 7 8 9 10 11 12 13 U.S. STD SCREEN 60% Roun
14、d 60% Round 65% Round 70% Round 70% Round80% Round 80% Round80% Round80% Round 90% Round 90% Round 90% Round95% Round 10 100 12 95-100 100 14 0-15 95-100 100 20 0-5 0-15 95-100 100 30 0-5 0-15 95-100 100 40 0-5 0-15 95-100 100 50 0-5 0-15 95-100 100 60 0-5 95-100 100 70 0-15 95-100 100 80 0-5 0-15 9
15、5-100 100 100 0-5 0-15 95-100 100 120 0-5 0-15 95-100 100 140 0-5 95-100 100 170 0-15 95-100 200 0-5 0-15 230 0-5 0-15 325 0-5 0-15 400 0-5 Table I Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-PRF-9954D 4 3. REQUIREMENTS 3.1 Composition. The g
16、lass bead media shall not be recycled or recovered, but newly manufactured from commercial grade soda lime glass, and shall contain less than 0.1 weight percent crystalline silica. The glass beads shall contain no less than 62% amorphous silica (This is not free silica and does not cause silicosis).
17、 The glass beads shall not contain more than 75 ppm Arsenic and 100 ppm Lead by Weight. (see 4.4.7) 3.2 Appearance and Roundness. The glass beads shall be spherical, free flowing, free of defects, and free of foreign matter in accordance with high-grade commercial practice. No more than 3% of any si
18、ze shall be scored, broken or un-fused, angular glass particles (see 4.4.2). The roundness of the glass beads shall be specified in Table 1 for each size. 3.3 Coating. No silicone or trace of silicone will be permissible on the glass beads (see 4.4.3). 3.4 Specific Gravity. The specific gravity of t
19、he glass beads shall be no less than 2.3 (see 4.4.4). 3.5 Magnetic Iron Particles. No more than 0.1% by weight of free magnetic iron particles shall be permissible (see 4.4.5). 3.6 Sieve Analysis. The glass beads shall conform to the sieve analysis as specified in Table 1 when tested as specified (s
20、ee 4.4.6). 4. VERIFICATION 4.1 Classification of Inspection. Unless otherwise specified in the contract or purchase order, the supplier is responsible for the performance of all inspection requirements as specified herein. Except as otherwise specified, the supplier may utilize his own facilities or
21、 any commercial laboratory acceptable to the Government. The Government reserves the right to perform any of the inspections set forth in the specification where such inspections are deemed necessary to assure that supplies and services conform to prescribed requirements. 4.2 Conformance Inspection.
22、 Quality conformance tests shall consist of the following tests: a. Sieve analysis (see 4.4.6) b. Magnetic iron particles (see 4.4.5) c. Appearance and Roundness (see 4.4.2) d. Coating (see 4.4.3) e. Heavy Metals analysis (see 4.4.7) Provided by IHSNot for ResaleNo reproduction or networking permitt
23、ed without license from IHS-,-,-MIL-PRF-9954D 5 4.3 Sampling For Quality Conformance Test. For purposes of inspection, a lot shall consist of media of the same chemical composition and size. If production is continuous, a lot shall be the product of not more than eight hours of continuous production
24、 and it is not to exceed 20,000 pounds. Alternatively, Statistical Process Control Methods may be used to monitor the quality of the product so that it meets the requirements of the applicable detail specification. Two representative samples of the 1500 grams each shall be selected from separate con
25、tainers chosen at random. Each sample shall be used in the following tests. 4.4 Test Methods. 4.4.1 Silica Content. The silica content shall be determined in accordance with ASTM Method C 169 or a generally accepted instrumental method with traceable standards. 4.4.2 Scored, Broken, Un-fused Angular
26、 Particles and Roundness. For each representative sample, three random samples will be taken and an actual count of a field of approximately 100 beads each. A microscope, or similar magnification device with 20X magnification or greater, shall be used to make the count. The average count of each spe
27、cimen shall be reported as percent true spheres. An automated method is acceptable provided it correlates to the optical method or a generally accepted instrumental method with traceable standards. 4.4.3 Coating. For each representative sample, the test for silicone coating shall be performed as fol
28、lows: slowly pour 50 grams of the glass beads into a 250 ml beaker containing 200 ml of distilled water. Any air entrainment causing the beads to coagulate into discrete lumps is an indication of silicone. The glass beads should disperse when poured into the water; however, a small number of beads f
29、loating on the water are permissible. 4.4.4 Specific Gravity. A 60 gram sample of glass beads, previously dried, shall be placed in a 100 ml graduated cylinder containing 50 mls of distilled water. The total volume, minus 50, will give the volume or the beads. The specific gravity shall be computed
30、as follows or with a generally accepted instrumental method with traceable standards. Sp. Gr. = Weight of sample (grams) Water level (mls) after Addition of Sample -50 mls 4.4.5 Magnetic Iron Particles. For each representative sample, approximately 500 grams of beads shall be obtained per Section 4.
31、3 and shall be sprinkled on an inclined magnetic plane consisting of four 10,000 gauss strength magnets. The magnets shall be centered directly behind the plane as depicted in Figure 1. After sprinkling the glass beads, carefully brush any magnetic particles into a tarred, weighing dish. The glass b
32、eads are to be re-sprinkled until no magnetic particles are retained on the magnetic plane. When no more particles are visible on the magnetic plane, weigh the magnetic iron particles and compute the percentage. No more than 0.1% by weight of free magnetic iron particles shall be permissible. Provid
33、ed by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-PRF-9954D 6 4.4.6 Sieve Analysis. For each representative sample, the sieve analysis shall be performed on the sample obtained in Section 4.3 after it has been accurately reduced by riffle splitter (1:1 s
34、plitter). The samples to be taken are as follows: for MIL Size 3-7 approximately 100 grams, MIL Size 8-10 approximately 50 grams, MIL Size 11-13 approximately 25 grams. The glass beads shall conform to the size specification in MIL G-9954-A, Table 1. The size of the glass beads shall be measured in
35、accordance with ASTM D 1214 or any other generally accepted mechanical or optical method that is just as accurate as ASTM D1214. Trace amounts (0.4%) round to zero. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-PRF-9954D 7 4.4.7 Heavy Metal Ana
36、lysis. The Weight percentage of Arsenic and Lead shall be determined in accordance with EPA 3052 and EPA 6010B or a generally accepted instrumental method with traceable standards. 5. PACKAGING 5.1 Packaging For acquisition purposes, the packaging requirements shall be as specified in the contract o
37、r order (see 6.2). When packaging of materiel is to be performed by DoD or in-house contractor personnel, these personnel need to contact the responsible packaging activity to ascertain packaging requirements. Packaging requirements are maintained by the Inventory Control Points packaging activities
38、 within the Military Service or Defense Agency, or within the Military Services system commands. Packaging data retrieval is available from the managing Military Departments or Defense Agencys automated packaging files, CD-ROM products, or by contacting the responsible packaging activity. 5.2 Glass
39、beads will be prepared for shipment in accordance with commercial practice and in compliance with applicable rules and regulations pertaining to the handling, packaging and transportation of glass beads to ensure carrier acceptance and safe delivery. Product to be packaged in 50 pound paper bag cons
40、truction with poly-liner, or other package specified at time of order. The product package shall be labeled with the Specification designation, including the current revision, as well as the bead size number from Table 1 preceded by “MIL #. (see 1.2) 6. NOTES (This section contains information of a
41、general or explanatory nature that may be helpful, but is not mandatory.) 6.1 Intended Use. The glass beads covered by this specification are intended for use in suction/pressure blasting equipment to clean, peen, polish and finish ferrous and non-ferrous materials as referenced in contract order. 6
42、.2 Ordering Data. Procurement documents should specify the following: a. Title, number and date of this specification b. Size desired c. Quantity desired d. Capacity or containers and type of container to be furnished e. Selection of applicable levels of packaging and packing. 6.3 Subject term (keyw
43、ord listing) a. Deburring b. Finishing 6.4 Changes from previous issue. Marginal notations are not used in this revision to identify changes with respect to the previous issue due to the extent of the changes. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from
44、IHS-,-,-MIL-PRF-9954D 8 Civil Agency Coordinating Activity: GSA - FSS Custodians: Preparing Activity: Air Force 84 Air Force -84 Navy - AS Army MR Agent Activity: Air Force 99 (Project 5350-2009-001) NOTE: The activities listed above were interested in this document as of the date of this document. Since organizations and responsibilities can change, you should verify the currency of the information above using the ASSIST Online database at http:/assist.daps.dla.mil. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
