1、MIL-P-60812 (MU) 5 February 1968. SUPERSEDING FA-PD-M1-2666, Rev O 19 May 1965 MILITARY SPECIFICATION PROJECTILE, 4.2 INCH, W,P, SMOKE, M328A1 METAL PARTS ASSEMBLY 1. SCOPE 1.1 This specification covers Projectile, 4.2 Inch, W.P. Smoke, M328A1, Metal Parts Assembly. 2. APPLICABLE DOCUMENTS 2.1 The f
2、ollowing 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 MIL -A - 2 5 50 Mi li tary Ammunition and Special Weapons, General Specification for STANDARDS Federal Federal Test Metho
3、d Standard No. 141 - Paint, Varnish, Lacquer and Related Materials, Method of Inspection, Sampling and Testing. Federal Test Method Standard No. 151 - Metals; Test Met hods Military MIL-STD-105 - Sampling Procedures and Tables for MIL-STD-109 - Qual-ity Assurance Terms and Definitions MIL-STD-1167 -
4、 Amunition Data Card MIL-STD-1168 - Lot Numbering of Ammunition MIL-STD-1169 - Packaging, Packing and Marking for Ship- ment of Inert Ammunition Components MIL-STD-1235 - Single and Multilevel Continuous Sampling Procedures and Tables for Inspection by At tributes Inspection by Attributes THIS DOCUM
5、ENT CONTAINS /? PAGES. / FSC 1315 h h Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-P-bO12 13 9 797770b 0341250 1 MIL-P-60812 (MU) DRAWINGS Munitions Command Dl0534915 - Projectile, 4.2 Inch, W.P. Smoke, M328A1, Metal Parts Assembly IEL-1053491
6、5- Inspection Equipment List for Projectile, 4.2 Inch, W.P. Smoke, M328A1, Metal Parts Assembly Fa848553 - Pallet (Copies of specifications, standards, drawings and publications required by suppliers in connection with specific procurement functions should be obtained from the procuring activity or
7、as directed by the contracting officer.) 2.2 Other publications.-The following documents from 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. ASA-B46.1 - Surface Texture,
8、Surface Roughness, Waviness and Lay. (Application for copies should be addressed to the American Standards Association, 10 East 40th Street, New York, N.Y.) 3. REQUIREMENTS 3.1 General,-Materials, parts and assemblies shall comply with the requirements specified on the applicable drawings, reference
9、d specifica- tions and the following: 3.2 Heat Treatment or Stress Relief.-Heat treatment or stress relief applied shall be uniform throughout each lot of components and shall be so conducted as to produce in each component the mechanical properties specified on the applicable drawing. 3.2.1 Hot For
10、ge - Heat Treatment Method.-Prior to finish machining, projectile bodies or bases manufactured from forgings shall be subjected to heat treatment to attain the required mechanical properties. The heat treatment shall consist of heatigg above the critical temperature, not to exceed 1600 degrees Fahre
11、nheit ( F), followed by an oil quench. After quenching, the forgings shall be tempered without delay at a temperature above 750 F. suitable to produce required mechanical properties After removal from the tempering furnace, the forging shall be slowly cooled in air (forced air permitted) to a temper
12、ature of not more than 700F., after which cooling may be accelerated by water spray. 2 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-P-608 12 (MU) 3.2.1.1 Bases (Alternative Design) .-Bases may be heat treated by normalizing in lieu of quenchin
13、g and tempering to obtain specified mech- anical properties. minimum, held at that temperature for a minimum time of 30 minutes, and cooled in such a manner as to produce uniform mechanical properties throughout the component. The bases shall be heated to a temperature of 1600F., 3.2.2 Cold Shaping
14、and Hot Cup - Cold Draw Method.-Cold working shall be so accomplished as to produce in the projectile body or base the mechanical properties specified. The projectile body or base shall be stress relieved at a temperature of 700F., minimum, following the final forming operation during which time pla
15、stic flow takes place. The minimum soak time at or above minimum temperature shall be estab- lished which will produce mechanical properties specified on the applicable drawing. The temperature and time duration of a process anneal prior to the final forming operation shall be established by the abi
16、lity to meet the required mechanical properties when formed by an approved sequence of operations. 3.2.3 Tubin&.-Bodies (alternative design) manufactured from tubing shall be stress relieved after cold forming of the nose. 3.3 Mechanical Properties.-Mechanical properties as specified on the applicab
17、le component drawing shall apply throughout the component. 3.4 Quality of Joint.-The total area of inclusions, lack of adhe- sion, solder groove or other defects shall not exceed 25 percent of the total faying surfaces of the joint. 3.5 Functional. 3.5.1 Excess Pressure.-When tested in accordance wi
18、th 4.4.6.1 the projectile assembly shall reveal no evidence of metal parts failure. Metal parts failure is defined as: “Projectile body or base deformation or separation of components in the mortar tube or in flight attributable to noncompliance with drawing or specification requirements: 3.6 Workma
19、nship.-The requirements for workmanship are as shown on the applicable drawing in the applicable specifications and the following: 3.6.1 Metal Defects.411 components shall be free from cracks, splits, cold shuts, pipe, porosity, inclusions or any similar defect. 3.6.2 Surface Finish.-The requirement
20、s for surface finish are as detailed on the applicable drawing. scale, fins, deep seams, die scratches, pits or other surface discontin- uities. Each body cavity shall be free of 3 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-4 Provided by IHSNot
21、for ResaleNo reproduction or networking permitted without license from IHS-,-,-.MIL-P-60832 13 W 9499906 0343253 7 = MIL-P-60812 (MU) 4.2.1.1 Examination and Test.-After inspection and provisional accept- ance at source, the sample will be inspected for all the requirements of the drawings and speci
22、fications at a Government Laboratory or such other facility specified in the contract. 4.2.1.2 Initial Production Sample Failure.-Failure of the sample to comply with the requirements of the drawings and specif ications will result in sample disapproval. 4.3 Inspection Provisions 4.3.1 Lot 4.3.1.1 S
23、ubmission of Product -The product shall be submitted in accordance with MIL-STD-105. 4.3*.2 Heat Treatment Lots.-Heat treatment lots shall contain body or base forgings from not more than one heat of steel that have been heat treated in the same heat treating equipment, at the same temperature, in o
24、ne unchanged process. The heat treatment lot thus constituted shall be the basis for the selection of samples for the tension test hereinafter prescribed. 4.3.1.3 Stress Relieved Lots.-Stress relieved lots shall contain cold worked bodies or bases from not more than one heat of steel that have been
25、cold worked by the same process, utilizing the same tooling and equipment and stress relieved in the same furnace at the same temp- erature for the same length of time, The stress relieved lot thus con- stituted shall be the basis for the selection of samples for the tension test hereinafter prescri
26、bed. 4.3.1.4 Tubing lots.-Bodies manufactured from tubing shall be fab- ricated from tubing lots containing not more than one heat of steel. The bodies shall be cold nosed and stress relieved using the same equip- ment and procedures. Lots of bodies thus constituted shall be the basis for the select
27、ion of samples for the tension test hereinafter prescribed, 4.3.1.4.1 Adapters.-Adapters manufactured from tubing shall be fab- ricated from tubing lots containing not more than one heat of steel. Tubing lots thus Constituted shall be the basis for the selection of samples for the tension test herei
28、nafter prescribed. 4.3.1.5 Bar Stock Lots.-Bar stock lots shall contain not more than one heat of steel. Bar stock lots thus constituted shall be the basis for the selection of samples or the tension test hereinafter prescribed. 5 Provided by IHSNot for ResaleNo reproduction or networking permitted
29、without license from IHS-,-,-4.3.1.6 Miscellaneous Lots.-Small lots (such as bodies manufactured from abnormally small heats of steel or bodies and bases that have become separated from previously delivered lots, etc.) may at the discretion of the supplier be grouped into miscellaneous heat treatmen
30、t, stress relieved or tubing lots as the case may be. Such lots shall be identified by a miscellaneous lot code number and processed in accordance with 4.3.1.2, 4.3.1.3 or 4.3.1.4 as applicable. The miscellaneous lot thus constituted shall be the basis for the selection of samples for the tension te
31、st here- inafter prescribed. 4.3.1.7 Projectile Lots.-When it has been determined that a heat bodies or bases have complied with the mechanical properties require- ment of the applicable drawing, they may be regrouped for assembly into projectile lots, to which will be assigned a projectile lot numb
32、er in accordance with MIL-STD-1168. The projectile lot shall consist of pro- jectile assemblies produced by one supplier under one contract in one unchanged process, in accordance with the same drawing, same drawing revision, same specification and same specification revision, under conditions of co
33、ntinuous production free from interruptions other than those due to the end of a shift, day or work week. The projectile lot thus constituted shall be the basis for &he selection of samples for the functional test hereinafter prescribed. treated, stress relieved, tubing, bar stock or miscellaneous l
34、ot of 4.3.2 Examination.-One hundred percent examination shall be per- formed for all critical defects. Examination for major and minor defects shall be performed on a defect basis in accordance with the classification of defects contained herein, using the sampling plans contained in MIL-STD-105. A
35、n AQL of 0.40 percent for each major defect and an AQL of 0.65 percent for each minor defect shall be used. Continuous sampling in accordance with MIL-STD-1235 may be used if approved by the procuring activity. When performing pressure tests, the item being tested will be observed for non-compliance
36、 during the entire time it is required to be pressurized. All non-conforming material shall be rejected. The roughness comparison specimens pre- scribed by ASA-B46.1 shall be used as a basis for surface roughness determination. 4.3.2.1 Control Tool Manufacture.-When component drawings designate cert
37、ain dimensions“Jrcontro1 tool manufacture“ two components shall be selected at the start of each shift or whenever B tooling change or modi- fication takes place, the dimensions developed by the tooling shall be gaged or measured to determine compliance with the applicable drawing. When a tooling ch
38、ange or modification takes place, production will not be resumed until it has been determined that developed dimensions are within specified tolerances. 6 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-P-bO32 33 m 7777706 0343255 O m MIL-P-60812
39、 (MU) 4.3.2.1 (Contd) Failure of any component to comply with the requirements shall be cause for rejection of the component. since the last satisfactory inspection need not be reinspected or screened, but immediate corrective action shall be taken to eliminate the discrepancy in future production.
40、Components that have been processed 4.3.2.2 Adapter, Nose Drawing D8798377, covering a detail of drawings F8797841 and D10534915 Defect Method of Inspection CRITICAL 1. Metal defective MAJOR 101. Diameter of braze surface Visual Gage MINOR 201. 202. 20s. 204. 205. 206. 207. 208. 209. 210. 211. Diame
41、ter of shoulder Diameter, small outside, rear of taper Length from front face to outside diameter rear of taper Length from front face to shoulder Length from front face to rear of braze surface Length, total Dimensions and location of solder ring groove incorrect (if applicable) Surface finish, imp
42、roper Radii or chamfers missing or incorrect Burr Foreign matter Gage Gage Gage Gage Gage Gage Visual (see 6.1) Visual (see 6.1) Visual (see 6.1) Visual Visual 4.3.2.3 Body, Drawing D8800091 and body (alternative design) drawing D8800090, covering a detail of drawings F8797841 and D10534915 Method o
43、f Inspection Defect CRITICAL 1. Metal defective MAJOR 101. Braze surface a- rear no ionally cone with inside diameter (if applicable) f unc Visual itric Gage 7 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-P-60812 (MU) 4.3.2.3 (Cont d) Defect M
44、ethod of Inspection MAJOR 102. Diameter, inside rear Gage 103. Diameter, inside front (if applicable) Gage 104. Diameter of braze surface at rear (if applicab1e)Gage 105. Depth of braze surface at rear (if applicable) Gage MINOR 201, Angle inside incorrect Gage 202. Depth from angle (inside) Gage 20
45、3. Surface finish, improper Visual (see 6.1) 204. Radii or chamfers, missing or incorrect Visual (see 6.1) 205. Burr Visual 206. Foreign matter Visual 4.3.2.4 Vane, drawing F879843 covering a detail of drawings F8797841 and Dl0534915 _I Defect Method of Inspection CRITICAL None defined MAJOR None de
46、fined MINOR 201. Length, total 202. Radius in center Gage Gage 4.3.2.5 Base, (alternative design) drawing D10534167, covering a detail of drawing P8797841 Defect Method of Inspection CRITICAL 1. Metal defective Visual 8 Provided by IHSNot for ResaleNo reproduction or networking permitted without lic
47、ense from IHS-,-,-MIL-P-bO22 23 W 9777706 0393257 4 W MIL-P-60812 (MU) 4&3.2.5 (Contd) Defect Method of Inspection MAJOR 101. Diameter of flange 102. Diameter of braze surface 103. Thickness through bottom of cavity including rotating disc seat 104. Length, total MINOR 201. Thickness through flange
48、including rotating 202. Dimension or location of solder ring groove 203. Depth of undercut, max. (if applicable) 204. Width of undercut, max. (if applicable) 205. Surface finish, improper 206. Radii or chamfers, missing or incorrect 207. Burr 208, Foreign matter disc seat (if applicable) Gage Gage G
49、age Gage Gage Visual (see 6.1) Visual (see 6.1) Visual (see 6.1) Visual (see 6.1) Visual (see 6.1) Visual Visual 4.3.2.6 Body and vane assembly, drawing P10534916, and covering a detail of drawings F8797841 and D10534915 Defect Method of Inspection CRITICAL None defined MAJOR 101. 102. 103. 104. 105. 106. 107. 108. 109. Diameter at frant face Diameter of braze surface of nose Depth from front face of body to front
