ARMY MIL-P-223 B-1962 POWDER BLACK《黑火药》.pdf
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1、1. SCOPEMIL-P-223B26 FESEUARY 1662SUPERSEDINGJAN-P-223A1.? JANuAEY 1949MILITARY SPECIFICATIONPOWDER, BLACKThis rpecititim hu ban amd 6U tha Dqmrtnwnt of Da/mudand iimndatmy for U. Standard forTesting Purpo3es.SS-S-789 Sulf u r, CommercialGrade.hffLITARYJAN-G155 Graphite (For Use inAmmunition).JAN-P1
2、56 Potassium Nitrate.JAN-C-178 Charcoal (For Use inMunitione).STANDARDSMIL-STD-105 Sampling Procedurwand Tablaa for In-spection by Attri-butes.MILSTD-129 Marking for Ship-ment and Storage.MIL-STD-2S6 Propellant, S 01ids :Sampling, Exam i-nation, and Testing.Lm3JProvided by IHSNot for ResaleNo reprod
3、uction or networking permitted without license from IHS-,-,-mbr-zwkfDRAWINGSORDNANCECOSPSF 7648321 Drum. Steel Packingfor Black Powder,Assembly Details,Packing and Mark-ing.F 7548323 Drum Steel Packingfor Black Powder,Details. -F 7548077 Container, Metal,Packing for BlackPowder, Assembly.F 7548078 C
4、ontainer, Metal,Packing for BlackPowder, Details.BUREAU OF AVAL WSAPONSLD 299212 Container, Powder,Mk 3, Mod 0.PUBL1CATIONSOSDNANCS CoEPsORD-M60Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MILP-223BA l-mmce portion of the l-pound primarysample sha
5、ll be ground in a suitable mortarto pass a No. 60 U.S. Standard sieve com-plying with Specification RR-2-366. (Class8 need not be ground or screened unless,upon visual examination, tbe powder ex-hibits lumps or clusters.) All precautionsshall be taken tn avoid unnecessary ex-posure of the eampe of t
6、be air; hence, assoun as a portion is ground, it shall be placedin a bottle and tightly etoppered. If thegrinding and sifting doeg not require morethan 3 minutes per pofion, there will beno appreciable change in the moisture con-tent due to hygroscopicity. Additional 1-ounce portions shall be ground
7、 as needed.The powdered sample shall be mixed wellbefore analyisis.4.4.3 Deternci?mtion of moisture contant.From the ground portion of the l-poundprimary sample, an accurately weighed por-tion of approximately 2 gm shall be trans-ferred to a tared weighing dish or coveredwatch .s1sss and dried for 4
8、 hours at 70” to75”. The dish shall be covered, cooled in adesiccator and weighed. (As an alternativemethod, the pofilon may be dried for 72hours at room temperature in a desiccatorover concentrated sulfuric acid). The lossin weight shall be calculated in terme ofpercent moisture. Three such determi
9、nationsshall be made and the average of the threeresults reported as the percent moisture inthe lot.4.4.4 Composition.4.4.4.1 Determirwtiom of potoee+um nitratecontent.4.4.4.1.1 Grauimetmalysis simultaneously with the composi-tion analyses, specified in 4.4.4, a separate 5xm porticn from the ground
10、portion of thei-pound primary sample, shall be trans-ferred to 400 ml beaker. The potassiumnitrate shall be extracted as specified in4.4.4.1, the residue ignited and the ash de-termined as specified berein.i.,i. Specific gaavit?) (not applicabk todaises 7, 8, 07 9).!.4.7.1 Prefcrred method. .4 weigh
11、ed por-tion of approximately 10 mg of the l-poundprim:my sample shall be transferred to a25-ml specific gravity bottle. Clean mercuryof known temperature, shall be added untillhe bottle is approximately ta full.The remaining air in the bottle shall bedisplaced with mercury as follows: A pieceof heav
12、y rubber tubing, approximately 2feet long, shall be attached to tbe bottle.The other end of the tubing shall be con-nectsd to one arm of a Y-tube. By mesns ofnnother piece of rubber tubing and a ehortpiece of glass tubing, the other arm of theY-tube ehall be extended to dip into a vesselcontaining m
13、ercury. The stem of the Y-tubashall be connected to a vacuum line. Therubber tubing leading b the mercury vesselshall be closed by means of a pinchcoek.The vacuum line shall be opened in orderto evacuate the specific gravity bottle. Afterevacuation, the vacuum line shall be closedby means of a pinch
14、cock placed cloee to theY-tube. The pinchcock on tbe tubing leadingto the stem of the mercury vessel shall beopened and the mercury allowed to flow intothe bottle. This operation shsll be repeateduntil the bottle is tilled with mercury. Thebottle containing the powder and mercuryshall be weighed. Th
15、e same bottle, tilled withmercury shall be weighed. The specific grt-vity shall be calculated as follows:Specific gravity AB divided by (APlus C minus D) where:A = weight of sample taken for test.B = density of mercury at test tem-perature.C = weight of vswel tilled with mer-cury.D = weight of vesse
16、l, powder, and mer-cury.TASLE 111. Spca”ticgrauitu ./ memmu.6Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-P-223B4.4.7.2 Alternate method. In case of dis-pute or doubt, the preferred method shall IICthe standard. Add exactly 100 grams of 1-poun
17、d primary sample tn a clean, stmrdard-ized bulb. Place the bulb in a vertical posi-tion, with the lower stem immeracd in themercury reservoir, attach the vacuum pumpto the upper stem, and prnceed to exhaust theair rmd to fdl the space within the bulb withmercury. Dislodge air bubbles that may clinga
18、round the powder grains or to the well ofthe bulb by tapping the bulb gently with arubber atopper while the air is being ex-hausted. Alternately exhaust the air and al-low the mercury to flow up into the bulb infour repeated operations as described. Afterfinally drawing tbe mercury up into the up-pe
19、r stem of the bulb, and after disconnect-ing the vacuum pump, allow the mercuryto settle back into the bulb. Close both stop-cocks, empty both upper and lower stems ofall sxcess mercury, wipe the exterior glo-bules of mercury and weigh the bulb con-taining mercury and powder. This weixhtrepresents t
20、he value of “Y” in the formulashown below. Determine the temperature ofthe mercury in degrees C. at the time ofmaking the determination, Table 111 showsthe specified O“ gravity of mercury “D,” atvarious temperatures ranging from O” to4“ c.100 D divided by (X minus Y plus 100)= Specific gravity of po
21、wder in which:X = Total weight in grams of bulb filledwith mercury.Y = Total weight in grams of bulb filledwith mercury and 1OOgm, pow-der.D = Specific gravity of mercury attemperature of test. (See tableIII, section 4.4.7.1).4.4.8 Apparent dcncitg (sea 3.6 for ap-plicability). A 50-ml graduated cyl
22、inder,having an internal diameter of approximate-ly 1 inch, shall be weighed to tbe nearest0.1 gm. The cylinder shall be filled with aportion of the l-pound primary sample asClose as possible to the 50-ml mark. l%ecylincier shall be suspended in an uprightposition by a length of cord, and allowed to
23、fall 30 times from a height of J inch ontna rubber cushion. (A standard laboratoryrubber stopper, having a diameter glightlylarger than that nf the base of the graduatedcylinder, has been found satisfactory foruse. ) Care shall be taken to prevent anyoscillation or sidewise motion. Upon com-pletion
24、of the 30 drops, su5cient powdert6 raise the level to tbe 50-ml mark shallbe added. The cylinder and cuntents shall beweighed to the nearest 0.1 .mg. The ap.parent density shall be calculated as follows:Apparent density = A minus B dividedby 50where:A = weight of cylinder plus black pow-der.B = weig
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- ARMYMILP223B1962POWDERBLACK 火药 PDF
