ARMY JAN-P-362-1946 POWDER BLACK SODIUM NITRATE《硝酸钠黑火药》.pdf

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1、JAN-P-3b2 13 a 7797706 0270797 7 JAN-P-362 28 June 1946 JOINT ARMY-NAVY SPECIFICATION POWDER, BLACK, SODIUM-NITRATE n Army Number 50-1 4-1 4A Navy Number 4P8 This specification. was ap roved by the War Department and the Navy Department for use of procurement services of the Army and the Navy and su

2、uersedes the following spedflcation- U. S. Army 21 July 1933 60-14-4 Navy Dept. A. APPLICABLE SPECIFICATIONS, OTHER PUDtICATIONS. AND DRAWINGS. A-1. Specificcctions.-The following specifications, of the issue in effect on the date of invitation for bids, form a part of this specification : JOINT ARM

3、Y-NAVY SPECIFICATIONS JAN-G155-Graphite (For Use in Ammunition) JAN-G-178-Charcoal (For Use in Ammunition) JAN-S-322-Sodium Nitrate 60-O-1-General Specification for Ammunition Except Small 60-11-40Sulfur (For Use in Ammunition) 100-2-Stanbard Specification for Marking Shipments by Con- NAVY DEPARTME

4、NT SPECIFICATION . U. S. ARMY SPECIFICATIONS Arms Ammunition. tractors. 1 General Specifications for Inspection of Material. RRS-366Sieves; Standard, Testing. FEDERAL SPECIFICATION A-2. Other publications.-The following publications of the .issue in effect on date of invitation for bids, form a part

5、 of this . specification : . . ,+. - BUREAU OF SUPPLIES AND ACCOUNTS PUBLICATION Navy Shipment Marking Handbook. Regulations for Transportation of Explosives and other Danger- 1 Appllcable only to Army purchases. Applicable only to Navy purchases. y INTERSTATE COMMERCE COMMISSION PUBLTCATION ous Art

6、icles by Freight. JAN-P-3621 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-JAN-P-362 13 7797706 0270778 7 Moisture (max.) Sulfur _ Sodium nitrate C h a rcua 1 Ash (max.)l 2 Perceiit 72.0 k 2.0 12.0 t 2.0 1fi.O f 2.0 0.70 1.5 A-3. Drawings.-The foll

7、owing drawings of the issue in effect on the date of invitation for bids, form a part of this specification: U. S. ARMY ORDNANCE DEPARTMENT DRAWINGS 764-43-Container1 Black Pow-der, Storage and Shipping, As- 76444-Container, Black Powder. Storage and Shipping, sembly. Details. 7i. shall have charges

8、 6 percent less in weight than that found to . give the desired velocity and tube pressure. None of these shots , shall give velocities less than 65 feet per second nor pressures greater than 110 pounds per square inch. %2c. Burned powder residue.-No burning or unburned powder shall be ejected from

9、the tube. The residue shall not be excessive nor of a highly corrosive nature. 1 JAN-P-3 62 1 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-JAN-P-362 13 = 97977Ob 0291000 1 4 P. METIIODS OP SA.MILISG. INSPECTLOX. AXU Cb:SCS. F-l. F-2. Sampling.- F-

10、2a. Laboratory sanipZes.-Unless otherwise specified, 10 per- cent but not more than 10 containers in the lot shall be selected by the Government inspector in such a manner as to be representa- tive of the lot. Sufficient of the material to form a primary sample of approximately 1 pound shall be remo

11、ved by means of a scoop from each selected container. This sample shall be mixed thoroughly, a 12-ounce portion placed in a rubber-stoppered bottle. and each primary sample labeled so that the container from which it was taken can be easily identified. The remaining portions of the primary samples s

12、hall be mixed thoroughly and quartered until a composite sample of approximately 1 pound is obtained, The composite sample shall be placed in a rubber-stoppered bottle or airtight can, and labeled to show the name of the material, lot number, manufacturer, plant, contract number, date of samplinE, a

13、nd number of pounds in the lot. Ali acceptance laboratory tests shall be made on the composite sample representative of the lot. Hold the primary samples for possible future examination should the composite sample fail to meet the requirements of this speci- fication. F-2b. Ballistic sample (dass C)

14、.-If the powder sample selec- ted in accordance with paragraph F-2a satisfactorily passes the laboratory tests, the Government inspector shall select a 25-pound ballistic sample representative of the lot. The ballistic sample shall be packed and marked in accordance with section G, and shall be forw

15、arded to the Naval Gun Factory, Washindon 25. D. C., for ballistic tests. F-3. Inspection.- F-3a. Army.-Inspection shall be made in accordance with the requirements of U. S. Army Specification 50-0-1. F-3b. Navy.-Unless otherwise specified in the contract or order, inspection shall be made at the pl

16、ace of manufacture. F-3c. The bureau or agency concerned may in special cases. waive the inspection of raw materials used in the manufacture of sodium nitrate black powder. However, analysis of the finished product shall not disclose impurities in greater amounts than are allowable by the proportion

17、 of raw materials incorporated. Laborntory tests.-The laboratory tests shall be made in accordance with the following paragraphs. For Navy purchases, the tests shall be made at the U. S. Naval Powder Factory, Indian Head, Md., unless otherwise specified in the contract or order. Prcpnation of sample

18、 for rcnalysis.-Two to 4 ounces of the sample shall be ground in small portions in a suitable mor- tar to pass a No. 60 U. S. Standard sieve. All precautions shall be taken to avoid unnecessary exposure of the sample to the air: hence, as soon as B portion is ground, it shall be put in a bottle and

19、tightly stoppered. If the grinding and sifting does not re- quire more than 3 minutes per portion, there will be no appreciable Size of 1st.-The size of the lots shall be a maximum of 10,000 pounds. F-4. P-4a. I JAN-P-3 62 I Provided by IHSNot for ResaleNo reproduction or networking permitted withou

20、t license from IHS-,-,-JAN-P-362 13 m 7777706 0231001 3 m , -, n 1 I I change in the moisture content due to hygroscopicity. The powdered sample shall be well mixed before analysis. F4b; Moisture.-Transfer a known weight of approximately 2 gm of the sample to a tared weighing dish or covered watch g

21、lass. Dry for 4 hours at 70C. Cover the dish, cool in a desic- cator and weigh. (As an alternative method, dry for 72 hours at room temperature in a desiccator over concentrated sulfuric acid,) Calculate the loss in weight as percentage of moisture in the sample as received. F4c. Sodium nitTute.-Tra

22、nsfer a known weight of approxi- mately 10 gm of the sample to a 400-ml beaker. Add 200 ml of distilled water, cover, bring to a boil and hold for 15 minutes on a steam bath. Filter through a tared filtering crucible. Wash with successive portions of 10 to 15 mi of hot water. Test the wash water pas

23、sing through the crucible with an excess of con- centrated su furic acid containing a few crystals of diphenyla- mine until there is no blue color. Blue color indicates the pres- ence of nitrate. Dry the crucible for 4 hours at 70“ C., or until all moisture is removed, cool in a desiccator and weigh

24、. The loss in weight represents moisture and sodium nitrae. Calculate the percentage of sodium nitrate in the moisture-free sample. . NOTE.-It is recognized that any water-soluble portions of the charcoal or sulfur are included in the above method. If special circumstances occasion the necessity for

25、 a more rigid determina- tion of sodium nitrate content, 1 ml o nitric acid (1.42 sp. gr.) shall be added to the water extract (see par. F-4c) which is evaporated to dryness and dried for 2 hours at 150“ C., cooled in a desiccator and weighed. If it is desired to test the purity of the sodium nifrat

26、e; a separate 1-gm sample of the powder shall be extracted. The filtrate shall be evaporated to dryness and a nitrometer test for nitrogen run in accordance with the method outlined in Joint Army-Navy Specification JAN-S-322. F-4d. Sulfur.-After the determination of sodium nitrate as described in pa

27、ragraph F-4c place the crucible in an extractor on a water bath and extract for 4 hours with carbon disulfide. After the extraction wash the crucible once with alcohol and once with ether, using suction, dry for 1 hour at 100“ C., cool in a desiccator and weigh. Calculate the loss in weight of the c

28、rucible as percentage of sulfur in the sample on a moisture-free basis. F-4e. Charcoal.-Consider the residue in the crucible to be charcoal. Determine its weight by subtracting the original weight of the filtering crucible from the weight of the crucible and resi- due, and calculate this weight as p

29、ercentage of charcoal in the moisture free sample, F-4f. Ash.-Ignite the crucible with its residue (see par. F-4e) in a muffle furnace or over a Bunsen burner until all of the carbon is burned off. Cool in desiccator and weigh. Calculate the weight of residue as percentage of ash in the sample as re

30、ceived. If it is desired to perform this analysis simultaheously, with the analyses described in paragraphs F-4b-F-4e, a Scjlarate 6-gm sample shall be transferred to a 400-ml heaker. Extract the Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-JAN-P-

31、362 33 4797706 0293002 5 u odium nitrate as described iii paragraph F-4c. Ignite the residue and determine tlic ash as described. F4g. Foreign matter.-Examine the residue in the filtering crucible, after the removal of the sodium nitrate and sulfur. Note if the sample is free from foreign material a

32、s indicated by the absence of sticks, stones, and sand. F-4h. Specific gravity.-Transfer a known weight of sample, approximately 10 gm, to a 25-ml specific gravity bottle. Add clean mercury until the bottle is approximately $5 or % full. Dis- place the remaining air in the bottle with mercury as fol

33、lows: Attach a piece of heavy rubber tubing approximately 2 feet long to the bottle. Connect the other end of the tubing to one arm of a Y-tube. By means of another piece of rubber tubing and a short piece of glass tubing, extend the other arm of the Y-tube to dip into a vessel containing mercury. C

34、onnect the stem of the Y-tube with a vacuum line. Close the rubber tubing leading to the mercury vessel by means of a pinchcock. Open theyacuum line in order to evacuate the specific gravity bottle. After evac- uation, close the vacuum line by means of a pinchcock placed close to the Y-tube. Open th

35、e pinchcock on the tubing leading to the stem of the mercury vessel and allow the mercury to flow into the bottle. Repeat this operation until the bottle is filled with mercury. Weigh the bottle containing the powder and mercury at 20.0“ f 0.3“ C. Weigh the same bottle filled with mercury at 20/200

36、C. Calculate the specific gravity of the black powder at 20“/20 C. as follows: Specific gravity of black powder = where 13.65A A+B-C A = weight of sample B = weight of bottle filled with mercury C = weight of bottle filled with mercury and sample. F4i. Granulation.-Place an accurately weighed portio

37、n of approximately 100 gm of sample on the specified sieves properly superimposed and assembled with a botom pan. Cover and shake for 3 minutes by hand or by means of a mechanical shaker geared to produce 300 -f 16 gyrations and 150 -t- 10 taps of the striker per minute. Weigh the portions retained

38、or passed by the various sieves as required, and calculate the results to a percentage basis. F-6. BalUstzc tests. (class Cl.- F-5a. Service veZocitu.-Fire the number of rounds specified in paragraph E-2a in the prescribed torpedo tube using the dummy torpedo and charges calculated to give the desir

39、ed launch- ing velocity. Measure the velocities and pressures developed. If any shot fails outside the velocity or pressure limits prescribed in paragraph E-2a, the lot shall be rejected. F-6b. Variation of vetocitg and pressitre with variation of charge.-Fire the series of shots specified in paragr

40、aph E-2b. If any shot falls outside the velocity or pressure limits prescribed in paragraph E-Zb, the lot shall be rejected, r Jais-I-3621 _- Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-JAN-P-362 13 m 777770b 0271003 7 W . 7 /1 F-6. Resubnbsion.-

41、If the composite laboratory sample rep- resentative of the lot fails to pass the inspection tests, the manu- facturer shall have the option of having analysis of each primary sample made at no further expense to the Government. The man- ufacturer may then remove or replace defective portions of the

42、lot represented by the primary samples.which fail to meet the require- ments and resubmit the lot for acceptance, provided that the mark- ing on the container is such that complete removal or replacement of defective portioiis of the lot can be made to the satisfaction of the Government inspector. N

43、o ballistics retests will be permitted. - G. PACKAGING, PACKING. AND MARKING FOR SHIPMENT. Gl. Packing.- Gla. For domestic shipment.-Unless otherwise specified in the contract or order, black powder shall be packed in commercial metal kegs of 25-pound capacity conforming to the requirements of Inter

44、state Commerce Commission Specification 13. Kegs shall have a slide type closure and shall be so constructed as to insure acceptance by common or other carrier for safe transportation, at the lowest rate, to the point of delivery. Kegs shall be painted black or green. Army purchases shall be packed

45、in the containers described herein or in containers described on U. S. Army Ord- nance Drawings 76-4-43 and 76-4-44. G-la (1). Lhing.-All containers shall be lined with cloth bags approved by the Government inspector. Linings for Army pur- chases shall conform to the requirements shown on U. S. Army

46、 Ordnance Drawing 76-4-45. Gla (2). Gaekets.-A11 containers shall be provided with a gasket that completely covers the opening. G-lb. For we1*sem shipment.-Black powder intended for overseas shipment shall be packed in metal containers as dedcribed in paragraph Gla, and in addition the containers sh

47、all be crated. two containers per crate. The design and construction of the crates shall be approved by the Government and be in compliance with regulations covering overseas shipment. 6-2. Marking.-In addition to any special marking required by the contract or order, shipments for the Army shall be

48、 marked in accordance with the requirements of U. S. Army specification 100-2; for the Navy in accordance with the requirements of the Navy Shipment Marking Handbook. .,- H. NOTES. H-l. Requests, requisitions; schedules, and contracts or orders should contain the following features: (a) Title of the

49、 specification, the number and the date, (b) Class desired. (see par. LI)# (c) Whether the powder is to be packed for domestic or over- seas shipment (see Sec. G). H-2. Use.-Class A sodium nitrate black powder is intended fr use in saluting charges. Class B sodium nitrate black powder is intended for use in practice bombs, Class C sodium nitrate black powder is intended for use in torpedo impulse charges. . .”. .- - ,i -, JAN-P-3623 Provided by IHSNot f