1、MIL-F-50533 33 7999986 8429804 9 9 (I *I .! 1;). i:? - j -+* I NIL-F-50533 (MU) 1; 1 i3 May i970 MILITAtRT SPECIFICATION FIBER, ACRYLIC, FIBRILLATED 1. SCOPE 1.1 Tnis specification covers one type of Fibrillated acrylic fiber intended for use in 152MM Cartridge cases. 2. APPLICABLE DOCUMENTS 2.1 The
2、 following documents of the issue in effect on date of invitation for bids or request for proposal form a part of this specification to the extent specified herein. SPECIFICATIONS MILITARY c MIL-P-50250 - Fiber, Acrylic, Fibrillatable STANDARDS MILITARY MIL-STD-105 - Sampling Procedures and Tables f
3、or MIL-STD-109 - Quality Assurance Terms and Definitions. MIL-STD-129 - Marking for Shipment and Storage. MIL-STD-1235 - Single and Multilevel Continuous Inspection by Attributes (ABC-STD-105). Sampling Procedures and Tables for Inspection by Attributes I DRAWINGS ARMY 9235668 - Acrylic Fiber (cop e
4、s of sbecifications, standards and drawings required by suppliers in connection with specific procurement functions should be obtained from the procuring activity OP as directed by the contracting officer). FSC: 1320-A-173 THIS DOWMENT CONTAUNS PAGES. e- Provided by IHSNot for ResaleNo reproduction
5、or networking permitted without license from IHS-,-,-2 gub licntlofis. -The following clCCUI;C!rits L0r;:i i? ar 91. this specil:cation to the ext;e.r.c s9ecifleci hercin. Ur,less 0t;l;erwise ir,i;icatei;, the issue In exfect OK date cir invitation for biUs shall apply. TAE?I METE03 Technical Associ
6、ation of the Pulp and laper Inustry . (Application for copies should be adcressed to the Secretary, TAPPI, 360 Lexington Avenue, New York 17, X.Y.) 3.1 Haterial. -Tne material shall be fibrillatea acrylic fiber ana shall conform to all app1c:able drawings and specifications. 3.2 Drainage rate.-The f
7、ibrillated fiber shall have a drainage rate of 12.5 - + 2.5 seconas wnen testea as specifie in 4.3.3.1. 3.3 Water content .-The fibrillated fiber shall contain a minimum of 40 percent water when tested n accordance with 4.3.3.3. 3.4 Contamination.-A hansneet formed from the fibrillated fiber shaii c
8、ontain a rnaxinum of 10 sq. rnm of foreign matter per square meter when testea in accordance with 4.3.3.4. 3.5 Workmanship.-The fiber shall be produced in a thorough workmanlike manner in accordance with best comercial practice. A hansheet, prepared from the fibrillated fiber, shall be free of knits
9、 or nodules. 3.6 Process controls.-The contractor shall, as a minimum, incluae the following process contro1s;all data shall berecorded. 3.6.1 Beater water temperature each 1/2 hour of beater operation (see 6.31, consistency of the slurry at the beginning of Seating, beater roll to bedplate clearanc
10、e (see 6.4) and load aniperage (see 6.5) each 1/2 hour of beater operation an6 total beating cine. 3.7 First Article Sample. -!Phis specification makes provisions for sGbrnitta1 of a first article sample. Requirements for the sfibrnissior, of first article samples oy the contractor shall be as speci
11、fied in the contract. 4. QUALITY ASSURANCE PROVISIONS 4.1 Responsibility for inspection.-Unless otherwise speciiieci in tne contract or parciiase order, the supplier is responsile for the performance of all inspection requirenents as specified herein. Except as otherwise specifie in the contract or
12、order, the supplier :say use his Oiqn or any other facilities suitable for the performance of the inspectior, 2 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-F-50533 13 = 994190b Oi278RL 2 MIL-F-50533 (MU) requirements specified herein, Unless
13、disapproved by the Government. Tne Gove-fiment reserves the rignt to perform any of the inspections se; forch in the specification where such inspections are deeiued necessary to assure supplies and services conform GO prescribed requirements. Reference shall be made to Standard MIL-STD-109 in order
14、 to define terms used herein. 4.1.1 Submission of product.-At the time each completed lot of items deliverable under the contract is submitted to the Government for acceptance, the contractor shall supply the follow- ing information accompanied by a certificate which attests that the information pro
15、vided is correct and applicable to the product being submitted: a. A statement that the lot complies with all of the quality assupance provisions specified in this specification. b. Drawing and specification number and date, together with identification and date of changes thereto. c. A statement th
16、at all material purchased by the contractor meets requirements, when such material is controlled by Government or comercial specifications referenced in any or the contractual documents, and that certificates of conformance are on file and available for review. d. Quantity of material in the lot. e.
17、 Date submitted The certificate shall be signed by a responsible agent of the certifying organization. The initial certificate submitted shall be substantiated by evidence of the agents authority to bind his principal. Substantiation of the agents authority will not be required with subsequent certi
18、ficates unless., during the course of the contract, this authority is vested in another agent of the certifying organization. 4.2 First Article Inspection 4.2.1 Submission.-The contractor shall submit a first article sample consisting of 40 pounds dry basis of fibrillated acrylic fibers which have b
19、een produced by the same production processes which the contractor will use in fulfilling the contract, to a Government facility designated by the contracting officer, A similar sample shall also be submitted whenever a change occurs in the manufacturing process, material used, specification or sour
20、ce of supply, such as to significantly affect product uniformity as determined by the Government. 4.2.2 Inspections to be performed.-The material shall be inspected for all requirements of this specification. 4.2.3 Rejection.-If the material fails to comply with the applicable requirements, the init
21、ial production quantity shall be rejected and the contractor shall take the necessary corrective 3 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,- _- MIL-F-50533 13 W 999790b 0429807 4 W accion and submit a new first article sample, or portion there
22、of, as specified by the contractlng oificer, The contractor shall continue to submit new OP supplemental quantities as necessary until such time as a quantity successfully passes the inspection specified or until otherwise directed by the procuring activity. 4.3 Inspection ppovicions 4.3.1 Lot forma
23、tion.-The term llinspection lot“ as used in this specification is defined as an essentially homogeneous collection of units of product from which a representative sample is drawn and inspected to determine conformance with applic- able requirements. The sample selected shall represent only that quan
24、tity of units from which the sample was drawn and shall not be construed to represent any prior or subsequent quantitites presented for inspection. Homogeneity shall be considered to exist provided the inspection lot has been produced by one manufacturer, in one unchanged process, in accoydance with
25、 the same drawing, same drawing revision, same specification and same specification revision and complies with the provisions for submission of product as specified in MIL-STD-105. Changes to the process, specification, or drawing not affecting safety, performance, interchangeability, or storage, as
26、 determined by the Government, shall not be deemed to alter the homogeneity of an inspection lot. All material submitted for inspection in accordance with this specification shall comply with the homogeneity criteria specified herein regardless of the type of sampling procedure which is being applie
27、d to determine conformance with requirements. Lot numbering, as required, shall bein accordance with MIL-STD-1168. Each lot shall consist of drums of fibrillated acrylic fibers made from one or more batches of fibers that have been subjected to the same processing operations and conditions, by one m
28、anufacturer, and in accordance with the same specification and specification revision. A batch shall be that quantity of raw materials which has been subjected to the same unit chemical and physical processes intended to make the final product homogeneous. subparagraphs shall be performed on inspect
29、ion lots (see 4.3.1) of the components or assemblies designated in the applicable paragraph headings. Inspection for critical defects ( and major defects, when so specified) shall be 100 percent. Sampling plans for major and minor defects shall be in accordance with MIL- STB-105 except that continuo
30、us ,.sampling plans in accordance with MIL-STD-1235 may be used if approved by the Government. Instead of applying the AQLs designated herein to the groups of major and minor defects listed, the contractor may elect to apply AQLs of 0.40 percent for each major defect and an AQL of 0.65 percent for e
31、ach minor defect. When this method is elected, it shall be applied to all of the major and minor defects listed in the applicable subparagraph of this section, except where 100 percent inspection is specified, and be documented as part 4.3.2 Examination.-The examinations listed in the following 4 Pr
32、ovided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-4.3.2.1 FI 1 Der Categories Code No. Defects Mcthoa of Inspection (see 6.2) Critical: None defined. Major: None efined. Minor : AQL 0.65 percent 201. Workmanship (see 3.5) . Visual O1001 4.3.2.2 Fibers af
33、ter packaging (see 5.1) Categories Critical: None defined. Major: None defined Defects Xethod of Coue No. Inspection (see 6.2) Minor : AQL 1.00 percent 231. Marking incorrect, misleading, or unidentifiable. Visual 202. Workmanship (see 3.5) . Visual 4.3.3 Testing 02001 02002 4.3.3.1 Drainage-Rate (s
34、ee 3.2), Major defect, Code No, O3OOl.-A ranom sample shall be selected from each batch and the drainage rate determined in accordance with TAPP1 Nethod affectea batch snall be rejected. . T1002. If the sample fails the applicable requirement, the 4.3.3.2 Fiber length, Informational.-Each batch shal
35、l be randomly sanpled ana the fiber length by classification deter- mined in accorance with TAPP1 Standard T233 for information. Classification snall Se accomplished using screens of 8-, 14-, 48-, anci 1130- nesn. The percent fiber retained on eacn screen and the percent fines passing through the 10
36、0-nesh screen shall Se reporteci. 4.3.3.3 Viater content (see 3.31, Major defect, Coae No. 04001, -Li;ach batch shall be ranaonily sampled after dewatering and just ?rior to packing. Duplicate samples of 100-grams each (mirinum) shall be place into separate wioe-mouth jars (with screw caps). Close t
37、he jar immediately to prevent loss of water. Testing shall be as specifieu in 4.4.1. If either sanple fails the applicable requirement, the affectea batch shall be rejected (see 6.6). 5 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-i:, 3. j. 4 Conc
38、axination (see 3.4), Xajur Cefect -c , Coze li. GSSi31, -Sufficient zaterial shall be rsr,o:nly seAecteG frx. :e first three batcnes ;n each lot LO prepare ter, iii .“inndsi?ttvs in accorucrnce with iA?E Stancira 9205. Each iiandsheet shall be exaininecl for contamination in accordance with TfiPPI S
39、tandSra T2l3. If the dirt count exceed:; the ammount specified in 3.4 for any handsheet, the affected batch shall be rejectea aria all remaining batches in the lot shall be testea. Any other batches failing the requirement shall be rejected. 4.4 Test Methods and Proceaures 4.4.i !uater ConLent.-Tran
40、sfer the wet fiber sample from the closed jar to the weighing pan of a suitably calibrate6 moisture determination balance. Recora the weight of tne wet sample to the nearest 0.1 gram. Dry the fiber sample to constant weight using the heat source provied with the balance. Record the dry weight of the
41、 sample to the nearest 0.1 gran. Calculate the moisture content of the sample to the nearest 0.5 percent. 5. PR5PARATION FOR DELIVERY 5.1 Packing 5.1.1 Level CThe product shall be packea to afford pro- tection against loss of moisture, damage, ana contamination during direct shipiiient from the supp
42、ly source to the first receiving activity for immediate use. As a niinimum, packing shall consist of product sealeci in a plastic bag and overpacke in a fiber rurn. 5.2 Marking.-Unless otherwise specified, marking shall be in accordance with MIL-STD-129. 6.1 Ordering data.-Procurement documents shal
43、l specify the title, number, revision an date of this specification. 6.2 Inspection cocie numbers.-The five-dfgit code nuabers assig:ieti to the inspections herein are to facilitate future data collection and analysis by tne Government, 6.3 aeater water temperature should not exceed 10GF naximum. 6
44、Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-6.4 Seater roll to bedplate clearance should be no$ less Load amperage should not exceed 85 anpepes. than O. 07C inch. 6.5 6.6 Batches rejected for water content may be reworked by mixing with fresh water, dewatering again and retesting for water content. Custodian: ARMY -MU preparing Activity: ARMY-MU 7 ! Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
