NAVY QQ-L-171 E-1966 LEAD PIG《铅锭》.pdf

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1、QQ-L-LILE 76 m 7777774 0007365 2 m QQ-I,-171e October 10, 1966 SUPFRSEDING Int. Ped. Spec. QQ-I;-00171d (NAVY-Ships) December 10, 1962 and Fed. Spec. QQ-L-17lc Hay 21, 1957 FEDERAL SPECIFICATION LEAD PIG This specfification was approved by the Cmm.issifioner, Federal Supply Serv- ices, General Servi

2、ces Admizistration, for the use of all .Fede?-al agencies. 1. SCOPE AND CLASSIFICATION Government Printing Office, Washington, D.C. 20402. 1.1 Scope. This specification covers lead (Single copies of this specification and other product specifications required by activities outside the Federal Govern

3、ment for bidding purposes are available without charge at the General Services 1.2 Classification. Administration Regional Offices in Boston, Nem York, Washington, D.C., Atlanta, Chicago, Kansas 1.2.1 Form, shccpes, and g?*ades. The Pigs city, MO., Dailas, Denver, San FranGisco, Los An- shall be fur

4、nished in commercial standard geles, and Seattle, Wash. forms and shapes, in the following grades, (Federal ,Government activities may obtain copies of Federal Specifications, Standards, and Hand- as specified (see 3.3 and 6.2). books and the Index of Federal Specifications and Standards from establ

5、ished distribution points in pigs of the composition specified in 3.3 (see 6.1). Grade A. Grade B. their agencies.) Grade C. 2. APPLICABLE DOCUMENTS MIL-STD-105-Sampling Procedures 2.1 Specifications and standards. The fol- lowing specifications and standards, of the MIL-STD-129-Marking for Shipment

6、 issues in effect on date of invitation for bids or request for proposal, form a part of this specification to the extent specified (Copies of Military Specificaticns and Standards herein : required by contractors in connection with specifio procurement functions should be obtained from the procurin

7、g activity or as directed by the contractihg Military Standards: and Tables for Inspection by At- tributes. and Storage. Federal Specifications: NN-P-71-Pallets, Material Handling, officer. 1 2.2 Other publication. The following doc- ument forms a pai-t of this specification to wise indicated, the i

8、ssue in effect on date of invitation for bids or request for propos- al shall apply. Wood, Double Faced, Stringer Con- struction. Federd Standard: QQ-S-781-Steel, Strapping, Flat. the extent specified herein. Unless other- . -d. Test Methd Std. N, 151et- als; Test Methods. (Activities outside the Fe

9、deral Government may obtain copies of Federal Specifications, Standards, and Handbooks as outlined under General Informa- tion in the Index of Federal Specifications and Standards and at the prices indicated in the Index. The Index, which includes cumulative monthly sup- plements as issued, is for s

10、ale on a subscription basis by the wntendent of Documents, U.S. A?Yl or they may be melted in a clean cru- cible and either granulated by pouring into distilled water and drying thoroughly, or cast into thin slabs which shall be sawed through completely in several places and sawings treated as speci

11、fied in 4.3.2.1. See ASTM B 29 for details on sampling. 4.3.2.3 Kettle (classes A and C). Unless otherwise agreed upon by the procuringac- tivity and the contractor, the pigs or por- tions of lot selected shall be melted in a clean kettle. The melt shall be made at ag low a temperature as possible,

12、preferably not over 685OF., in order to prevent exces- sive drossing, and the molten bath shall be stirred immediately prior to sampling. While stirring, a sample in a preheated ladle may be taken and cast into thin sample bars ap- * -_q - proximately 8 inches in length, 1-1/4 inches in width, and 3

13、/8 inch in thickness. From the bar so cast, saw cuts shall be made 1/2 inch apart alternately from each side, halfway across the slab. No cut &all be made closer than 1 inch to either end of the slab. The sample shall be treated.with a strong mag- net to remove iron. 4.3.2.4 When mutually agreed upo

14、n be- tween the procuring activity and the eon- tractor, ladle test ingots obtained during pouring of the metal shall be used as sam- ples and treated as specified in 4.3.2.1, 4.3.2.2, and 4.3.2.3. One ladle test ingot shall be taken at the beginning of the pouring of a lot and one near the end of p

15、ouring as indicated by the inspector. 4.3.2.5 Spectrographic a?zaly&s. Samples for spectrographic analysis shall bb obtained by pouring metal representative of the heat or melt into a pemanent mold in the pres- ence of the inspector or at the time castings are poured. The mold shall be so designed t

16、hat the samples obtained will be truly rep- resentative of the heat or melt and satis- factory for use by the laboratory at which the spectrographic analysis is to be per- formed. 4.4 Examination and tests. 4.4.1 Visual examlinatim. Eaoh of the sam- ple lead pigs, selected in accordance with 4.3.1,

17、shall be visually examined to verify compliance with the requirements of this specification regarding surface condition and identification marking (see 3.2 and 3.4). 4.4.2 Chemical analysis. Chemical analy- sis shall be made on each sample, selected in accordance with 4.3.2. by wet chemical or spect

18、rographic methods (method 111 or 112 of Fed. Test Method Std. No. 161, to deter- mine conformance with 3.3. In case of dis- pute, chemical analysis by wet chemical methods shall be basis for acceptance of chemical composition and spectrographic an- alysis the basis for the acceptance of other impuri

19、ty elements as specified in table I, not es. 4.5 Rejecti ts, Any lead pig in the sam- 3 1 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-QQ-L-171E 76 m 7777774 00073b8 m QQ-L-17-le ple containing one or more defects shall be cause for rejection, and

20、 if the number of defective lead pigs in any sample exceeds the acceptance number for that sample, it shall be cause for rejection of the lot rep- resented by the sample. Rejected lots may be offered again for inspection provided the contractor has repaired or removed all nonconforming lead pigs. Sa

21、mples shall again be selected from such resubmitted lots and examined to verify compliance with this specification. 5. PREPARATION F8R DELIVERY 5.1 Packing. Packing shall be level A, B, or C, as specified (see 6.2). 5.1.1 Level A. Lead pig shall be packed on pallets conforming to type III of NN-P 71

22、. The stringer ends shall be bevelled. The load shall be adequately tension tied to the pallet with class-B, 1-1/4 by 0.035 inch coat- ed metal strapping conforming to QQ-S-781. Full length, nominal 1 by 4 inch lumber shall be placed under the strapping at the top of the load. The gross weight shall

23、 not ex- ceed 2,240 pounds. 5.1.2 Level B. Lead pig shall be packed in bundles stacked in a manner to facilitate handling with forklift vehicles. Such bundles shall be adequately tension bound with 14/4 inch by 0.035 inch coated metal strapping conforming to QQ-S-781. The gross weight shall not exce

24、ed 2,240 pounds. Lead pig, separated by grade, shall be packed to insure carrier ac- ceptance and safe delivery at destination at lowest rates in containers. complying with the rules and regulations applicable to the mode of transportation. 5.1.3 Level C. 5.2 Marking. 6.2.1 Military agencies. In add

25、ition to any special marking required by the contract or order, loose pigs and palletized loads shall be marked in accordance with MIL-STD-129. 5.2.2 Civil agencies. In addition to any spe- cial marking required by the contract or order, loose pigs and palletized loads shall be marked in accordance

26、with Fed. Std. No. 123. 6. NOTES 6.1 Intended use. 6.1.1 Grade A. Grade A lead pig is intend- ed for foundry use. 6.1.2 Grade B. Grade B lead pig is intend- ed for uses such as weghts and ballast. 6.1.3 Grade C. Grade C lead pig is in- tended for structural uses where high pur- ity lead is required

27、and for chemical use. 6.2 Ordering data. Purchasers should se- lect the preferred options permitted herein and include the following information in pro- curement documents : (a) Title, number, and date of this speci- (6) Grade of lead pig required (see 1.2). (c) Selection of applicable level of pack

28、- (d) Marking required (see 5.2). fication. ing required (see 5.1). MILITARY CUSTODIANS: Army-MR Navy-SH Air Force-69 Review activities: Army-MR, MU, WC Navy-SH, WP, YD Air Force-69 User activities: Army-MO Air Force-26 Preparing activity: Review/user information ims current as of the date of this d

29、ocument. For. future coordina- tion of changes to this document, draft cir- culation should be based on the information in the current Federal Supply Classification Listing of WD Standardization Documents. Navy-SH #7 US. GOVERNMENT PRINTING OFFICE: 1966-2SL3+-7!38 Orders for this publication are to

30、be placed with General Services Administration, acting as an agent See section 2 of this specification .to obtain extra copies and other for the Superintendent of Documents. documents referenced herein. Price 6 cents eacb 4 GSA DC 73-10638 Q Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-