1、Designation:B6714Standard Specification forCar and Tender Journal Bearings,Lined1This standard is issued under the fixed designation B67;the number immediately following the designation indicates the year of originaladoption or,in the case of revision,the year of last revision.Anumber in parentheses
2、 indicates the year of last reapproval.Asuperscriptepsilon()indicates an editorial change since the last revision or reapproval.This standard has been approved for use by agencies of the U.S.Department of Defense.1.Scope*1.1 This specification covers the establishment of require-ments for lined jour
3、nal bearings for use on locomotive tenders,passenger cars,and freight equipment cars.The alloy specifiedis UNS No.C94100.21.2 The values stated in inch-pound units are to be regardedas standard.The values given in parentheses are mathematicalconversions to SI units that are provided for information
4、onlyand are not considered standard.1.3 This standard does not purport to address all of thesafety concerns,if any,associated with its use.It is theresponsibility of the user of this standard to establish appro-priate safety and health practices and determine the applica-bility of regulatory limitat
5、ions prior to use.2.Referenced Documents2.1 ASTM Standards:3B824 Specification for General Requirements for CopperAlloy CastingsE57 Methods for ChemicalAnalysis of White Metal BearingAlloys(Withdrawn 1986)4E255 Practice for Sampling Copper and Copper Alloys forthe Determination of Chemical Compositi
6、onE527 Practice for Numbering Metals and Alloys in theUnified Numbering System(UNS)3.General Requirements3.1 The following sections of Specification B824 constitutea part of this specification:3.1.1 Terminology(Section 3).3.1.2 Sampling(Section 10).3.1.3 Number of Tests and Retests(Section 11).3.1.4
7、 Specimen Preparation(Section 12).3.1.5 Test Methods(Section 13).3.1.6 Significance of Numerical Limits(Section 14).3.1.7 Inspection(Section 15).3.1.8 Rejection and Rehearing(Section 16).3.1.9 Certification(Section 17).3.1.10 Test Report(Section 18).3.1.11 Product Marking(Section 19).3.1.12 Suppleme
8、ntary Requirements(S1S4).4.Ordering Information4.1 Include the following information when placing ordersfor bearings under this specification as applicable:4.1.1 Quantity of bearings required,4.1.2 ASTM designation and year of issue(for example,B67 05),4.1.3 Pattern and drawing number and condition(
9、as cast,machined,and so forth),4.1.4 Chemical analysis of residual elements,if specified inthe purchase order(Section 6),4.1.5 Fracture testing(Section 8),4.1.6 Witness inspection(Specification B824),and4.1.7 Product marking(Section 13).5.Materials and Manufacture5.1 Before lining,the brass backs sh
10、all be bored andthoroughly tinned in accordance with the best standard prac-tice.After lining,the ends of the bearings shall be made smoothby scraping,filing,or machining.They shall not be ground orrubbed with abrasive materials.5.2 The purchaser reserves the right to inspect the brassbacks after bo
11、ring and previous to tinning and lining.5.3 Unless otherwise specified,bearings will be furnishedwith linings14in.(6.35 mm)in thickness.1This specification is under the jurisdiction ofASTM Committee B05 on Copperand Copper Alloys and is the direct responsibility of Subcommittee B05.05 onCastings and
12、 Ingots for Remelting.Current edition approved April 1,2014.Published May 2014.Originallyapproved in 1927.Last previous edition approved in 2011 as B67 05(2011).DOI:10.1520/B0067-14.2The UNS system for copper and copper alloys(see Practice E527)is a simpleexpansion of the former standard designation
13、 system accomplished by the additionof a prefix“C”and a suffix“00.”The suffix can be used to accommodatecomposition variations of the base alloy.3For referenced ASTM standards,visit the ASTM website,www.astm.org,orcontact ASTM Customer Service at serviceastm.org.For Annual Book of ASTMStandards volu
14、me information,refer to the standards Document Summary page onthe ASTM website.4The last approved version of this historical standard is referenced onwww.astm.org.*A Summary of Changes section appears at the end of this standardCopyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Cons
15、hohocken,PA 19428-2959.United States1 5.4 The bearings shall be sound and free of blowholes,dross,and mechanical defects.All bearing surfaces,includingends,before and after lining,shall be smooth finished and freefrom sand.6.Chemical Composition of Backing6.1 The backing metal shall conform to the r
16、equirements fornamed elements shown in Table 1 for Copper Alloy UNS No.C94100.6.2 These specification limits do not preclude the presenceof other elements.Limits may be established for unnamedelements by agreement between manufacturer or supplier andpurchaser.Copper or zinc may be given as remainder and maybe taken as the difference between the sum of all elementsanalyzed and 100%.When all named elements in Table 1 areanalyzed,their sum shall be 98.7%minimum.6.3 It is recognized that residual el