NAVY MIL-G-18694 A-1975 GLYCERIN-WATER MIXTURES (FOR HYDRAULIC BUFFERS AND RECOILS)《液压缓冲及后坐水油混合物　》.pdf

1、MIL-G-LB674A b8 W 7979706 OLL7278 T W MIL-G-1869 4A( OS ) 2 June 1975 SUPERSEDING MIL-G-l8694(NOrd) 14 June 1955 MILITARY SPECIFICATION GLYCEROL - WATER MIXTURES (FOR HYDRAULIC BUFFERS AND HYDRAULIC RECOIL MECHANISMS) This Specification is approved for use by all Departments and Agencies of the Depa

2、rtment of Defense. 1 1. SCOPE 1.1 Scope. This specification covers requirements for glycerol-water mixtures for use in hyhaulic buffers and hydraulic recoil mechanisms. The methods described in this specification shall also be used for the preparation of such mixtures by the using activities. 1.2 Cl

3、assification. Glycerol-water mixtures shall be of the following types, as specified in the contract or order (see 6.2): Type A . . . 80-20 (glycerol-water) Mixture without additives. Type B . . . 60-40 (glycerol-water) Mixture with additives. 2. APPLICABLE DOCUMENTS 2.1 Referenced documents. The fol

4、lowing documents of the issue in . effect on date of invitation for bids or request for proposal, form a part of the specification to the extent specified herein. SPECIFICAT IONS Fe deral 0-G-491 O-S-571 O- S-5 88 O-S-642 Glycerol, Technical (High Gravity) Sodium Carbonate , Anhydrous , Technical So

5、dium Chromate, Anhydrous, Technical Sodium Phosphate , Tribasic , Anhydrous ; Dodecahydrate; and Monohydrate; Technical THIS DOCUMENT CQNTAIINS - 9 PAGES. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,- MIL-G-Lb94A 68 999990b OLL7279 I H MIL-G-l8694

6、A( OS) PPP-B-601 PPP-B-62 1 PPP-B-636 . PPP-(2-569 PPP-c-1337 Boxes, Wood, Cleated-Plywood Boxes, Wood, Nailed and Lock-Corner Boxes , Shipping, Fiberboard Containers, Plastic, Molded (for Liquids, Pastes and Powders): Overpacked Containers, Metal, with Polyethylene Inserts STANDARDS Mi lit ary MIL-

7、STD-105 Sampling Procedures and Tables for inspection by Attributes MIL-STD-129 Marking for Shipment and Storage (Copies of specifications , standards, drawings , and publications required by suppliers in connection with specific procurement functions should be obtained from the procuring activity o

8、r as directed by the contracting officer.) 2.2 Other documents. The following documents form a part of this specification to the extent specified herein. Unless otherwise indicated, the issue in effect on date of invitation for bids or request for proposal - shall apply. STANDARDS American Society f

9、or Testing and Materials (ASTM) Standard D 1193-70 Standard Specification for Reagent Water (Application for copies should be addressed to the American Society for Testing and Materials, 1916 Race Street, Philadelphia, PA 19103. ) 2 Provided by IHSNot for ResaleNo reproduction or networking permitte

10、d without license from IHS-,-,-MIL-G-L674A 68 7777706 OLL7280 B MATERIAL Glycerol . Water . Sodium carbonate . Sodium Phosphat e . Sodium chpmate . t MI L-G-l8694A( OS ) SPECIFICATIONS AND STANDARD 0-G-491; single grade known as high- gravity glycerin ASTM D 1193-70; Type I reagent water O-S-571; Ty

11、pe I, ordinary or light ash O-S-642; Type I, anhydrous O-S-588; one type and grade CLASSIFICATION RULES Uniform Classification Committee, Agent Uniform Ereight Classification (Application for copies should be addressed to the Uniform Class- ification Committee, Room 1106, 222 South Riverside Plaza,

12、Chicago, Illinois 60606.) Technical society and technical association specifications and standards are generally available for reference from libraries. distributed among technical groups and using Federal agencies. They are also 3. REQUIREMENTS 3.1 Materials. The materials used shall be such as to

13、produce Type A and Type B mixtures in compliance with the requirements of this specifi- cation. controlled as to insure uniformity of performance of each mixture. The quality of the materials used in each mixture shall be so 3.1.1 Type A mixture. The materials used in the Type A mixture shall be as

14、follows: Glycerol . This material shall be in accordance with the requirements of 0-G-491 for a single grade of glycerol known as high- gravity glycerin. Water This material shall comply with the requirements of ASTM D 1193-70, Type I reagent water. 3.1.2 Type B mixture. The materials used in the Ty

15、pe B mixture shall be in accordance with the specifications and standard listed in Table I. 3 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-G-l8694A( OS) 3.2 Chemical composition. 3.2.1 Type A mixture. The chemical composition of the Type A mix

16、ture shall conform to the following requirements: Percent by Percent by Material Volume Weight G ly cer o1 Water 80.0 20.0 83.4 16.6 The Type A mixture shall be prepared by adding, gradually and with constant stirring, 80 parts by volume glycerol to 20 parts by volume water until thoroughly mixed. 3

17、.2.2 Type B mixture. The chemical composition of the Type-B mixture shall conform to the following requirements: Percent by Percent by Material Volume I Weight Glycerol 59.6 63.9 Water 39.6 33.7 0.8 2.4 Sodium carbonate Sodium chromate Sodium phosphate The Type B mixture shall be prepared as follows

18、: a. To 50.65 ounces of water add the following: 2.40 ounces (“avdp) of sodium carbonate, O .14 ounce (avdp) of sodium chromate, and 0.40 ounce (avdp) of sodium phosphate. b. Make certain that the sodium salts have entirely dissolved in the water, then add 76.25 ounces of glycerol gradually to the s

19、olution with constant stirring until thoroughly mixed, 3.3 Separation. Type A and Type B mixtures shall be homogeneous single-phase mixtures. the mixtures shall be free from layers, particulate matter, precipitated sediment, and cloudiness. There shall be no separation of materials and 3.4 Alkalinit

20、y. Type B mixture shall show an alkaline reaction when tested as specified in 4.4.4. fi avdp . . . avoirdupois 4 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-G-l8694A( OS ) 3.5 Specific gravity. The specific gravities of Type A and Type B mixt

21、ures shall conform to the following requirements: Mixture Specific Gravity Type A (high-gravity type) Type B (low-gravity type) 1.206 f 0.002 at 15.6OC (EOOF) 1.173 k 0.002 at 15.6OC (6OOF) 3.6 Color. Type A and Type B mixtures shall be uniform in color. The Type A mixture shall be colorless. green.

22、 The Type B mixture shall be yellowish- 3.7 Workmanship. The workmanship shall be in accordance with commer- cial practices covering the preparation and shipment of Type A and Type B mixtures. correct proportions deemed necessary to provide mixtures which conform to prescribed requirements. Care sha

23、ll be exercised to assure thorough mixing and 4. QUALITY ASSURANCE PROVISIONS 4.1 Responsibility for inspection. Unless otherwise specified in the contract or purchase order, the supplier is responsible for the perfor- mance of all inspection requirements as specified herein. otherwise specified in

24、the contract or order, the supplier may use his own or any other facility suitable for the performance of the inspection requirements specified herein, unless disapproved by the Government. The Government reserves the right to perform any of the inspections set forth in the specification where such

25、inspections are deemed necessary to assure supplies and services conform to prescribed requirements. Except as 4.2 Lotting. A lot shall consist of a mixture, of one type, prepared by one supplier, at one plant, from the same materials, and submitted for inspection at one time. 4.3 Sampling. 4.3.1 Ex

26、amination of preparation for delivery. The sample unit for this inspection shall be one shipping container, fully packed, selected just prior to the shipping container closing operation. 4.3.2 Examination of containers. random sample of containers, filled with one type of mixture, shall be selected

27、in accordance with General Inspection Level II of MIL-STD-105. The Acceptable Quality Level shall be 2.5 percent defective. 5 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-G-l8694A( OS) 4.3.3 Samples for testing. Samples for testing shall consi

28、st of a minimum of one quart of the same type of mixture which shall be made up of quantities of 8 ounces or less taken from a sufficient nwnber of randomly selected containers and placed in separate, clean, dry, glass containers. container shall be prominently identified with a durable tag, securel

29、y attached and marked with the following information: Each sample shall be thoroughly mixed and each glass a. - Sample for Test b. c. Type of Mixture d. Applicable Specification e. f. Date of Manufacture g. Glycerol-Water Mixture for Hydraulic Buffers and Hydraulic Recoil Mechanisms Name of Manufact

30、urer, Address and Plant (where prepared) Sample Submitted By (name and date) 4.4 Quality conformance inspection. Sample filled containers, selected in accordance with 4,3.2, shall conform to the stated accept- ability criteria of MIL-STD-105. Rejected samples may be resubmitted for the examination,

31、specified in 4.4.2, in accordance with the provisions of MIL-STD-105. If any sample, selected in accordance with 4.3.3, fails to conform to the requirements of 3.3, 3.4, 3.5, and 3.6, the lot represented by the sample shall be rejected. . 4.4.1 Examination of preparation for delivery. A visual inspe

32、ction shall be made to ensure that packaging, packing, quantity and markings comply with the reuirements of Section 5. prepared for delivery also shall be inspected for conformance to the requirements of Section 5. Shipping containers, fully 4.4.2 Examination of containers. Filled containers, select

33、ed in accordance with 4.3.2, shall be visually inspected for leakage, damage, and marking. Closures shall be inspected to ensure that each is closed tightly so as to prevent leakage of content. i 4.4.3 Examination of mixtures for separation and color. Samples, selected in accordance with 4.3.3, shal

34、l be visually inspected for separation (see 3.3) and for color (see 3.6). slight cloudiness or turbidity shall not be cause for rejection. The development of a 4.4.4 Test methods for alkalinity. The Type B mixture shall be tested for alkalinity using a 10 percent phenolphthalein indicator solution.

35、alkalinity if the color of a small sample of the mixture (selected in accordance with 4.3.31, mixed with an equal volume of water, changes to pink or red when a few drops of the indicator solution are added to the sample. The Type B mixture shall be considered to have the required 6 Provided by IHSN

36、ot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-G-l8694A( OS) Note: If Type B mixture under preparation by a using activity fails to show an alkaline reaction (does not change color) when tested, the alkalinity shall be adjusted as follows: a. Prepare a solution

37、 made up of.2.5 ounces (avdp) of sodium carbonate and 0.5 ounces (avdp) of sodium phosphate dissolved in a pint of warm water. b. Add small portions of the solution to the Type B mixture with constant stirring. After each addition, draw off a small test sample of mixture. alkalinity when a few drops

38、 of indicator solution added to the sample causes it to turn pink. The mixture has the required 4.4.5 Test methods for specific gravity. B mixtures, selected in accordance with 4.3.3, shall be tested at 15.6OC (6OOF) for compliance with the requirements of 3.5. specific gravity shall be made with a

39、specific-gravity hydrometer graduated in divisions of 0.002. the type of mixture to be tested. Samples of Type A and Type Determination of Range of hydrometer shall depend upon Mixture Type A (high-gravity type) - 1.200 to 1.400 Range of Hydrometer for Test Type B (Iow-gravity type) 1.000 to 1.200 N

40、ote: When the specific gravity of a mixture under preparation by a using activity fails to conform to the requirements of 3.5, the specific gravity shall be adjusted as follows: a. If the specific gravity is low, add glycerol in small portions to the mixture with constant stirring until the required

41、 specific gravity is attained. b. If the specific gravity is high, add water in small portions to the mixture with constant stirring until the required specific gravity is attained. 5. PREPARATION FOR DELIVERY Note: Type A and Type B mixtures shall be supplied in one-quart, one-gallon or five-gallon

42、 quantities. 5.1 Packaging. Packaging shall be level A or C as specified (see 6.2). . 5.1.1 Level A. 5.1.1.1 he-quart quantity. This quantity shall be packaged as specified in PPP-C-569 for a Class A molded plastic container in a The I fiberboard box. 7 Provided by IHSNot for ResaleNo reproduction o

43、r networking permitted without license from IHS-,-,-MIL-G-l8694A(OS) 5.1.1.2 One-gallon quantity. This quantity shall be packaged as specified in PPP-C-569 for a Class B molded plastic container in a Type I fiberboard box. 5.1.1.3 Five-gallon quantity. This quantity shall be packaged as specified in

44、 PPP-C-1337 in a Type II, Class 1 metal container with polyethylene insert. 5.1.2 kvel C. One-quart, one-gallon, and five-gallon quantities shall be packaged in accordance with the manufacturers/suppliers commercial practice. 5.2 Packing. Packing shall be level A or C as specified (see 6.2). 5.2.1 L

45、evel A. 5.2.1.1 One-quart quantities. Twelve, one-quart containers, packaged as specified in 5.1.1.1, shall be packed in snug fitting boxes conforming to PPP-B-621, Class 2; PPP-B-601, Overseas Type; or PPP-B-636, Type CF, Class weather-resistant. .5,2.1.2 One-gallon quantities. Six, one-gallon cont

46、ainers, packaged as specified in 5.1.1.2, shall be packed in a box conforming to PPP- B-636, Type CF, Class-weather resistant, Variety SW, Grade V3c. . 5.2.1.3 Five-gallon quantity. We, five-gallon container, packaged as specified in 5.1.1.3, shall require no further packing. 5.2.2 Level C. Quantiti

47、es, packaged as specified in 5.1, shall be packed in a manner to ensure carrier acceptance and safe delivery at the lowest rate to the point of destination. Containers and packing shall be in accordance with Uniform Freight Classification Rules or regulations of other carriers applicable to the mode

48、 of transportation. 5.3 Marking. Each container shall be marked in accordance with MIL-STD-129 and with any additional marking as specified by the procur- ing activity (see 6.2). mixture also shall be marked as follows: Individual containers of Type A and Type B CONTAINER MARKING ON CONTAINER Type A

49、 mixture Type B mixture Do Not Use When Temperature is Below -17.8OC (OOF) Do Not Use When Temperature is Below -28.9OC (-20F) 8 i Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-G-L674A 68 m 777770b OLL7286 7 m MIL-G-l8694A( OS) In addition, each container shall be marked with the following informa- tion : CAUTION Protect from freezing and avoid eontamination of