ASTM B438-2008 Standard Specification for Bronze-Base Powder Metallurgy (PM) Bearings (Oil-Impregnated)《铜基粉末冶金(PM)轴承(油浸的)的标准规范》.pdf
《ASTM B438-2008 Standard Specification for Bronze-Base Powder Metallurgy (PM) Bearings (Oil-Impregnated)《铜基粉末冶金(PM)轴承(油浸的)的标准规范》.pdf》由会员分享,可在线阅读,更多相关《ASTM B438-2008 Standard Specification for Bronze-Base Powder Metallurgy (PM) Bearings (Oil-Impregnated)《铜基粉末冶金(PM)轴承(油浸的)的标准规范》.pdf(22页珍藏版)》请在麦多课文档分享上搜索。
1、Designation: B 438 08Standard Specification forBronze-Base Powder Metallurgy (PM) Bearings (Oil-Impregnated)1This standard is issued under the fixed designation B 438; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the year of las
2、t revision. A number in parentheses indicates the year of last reapproval. Asuperscript epsilon () indicates an editorial change since the last revision or reapproval.1. Scope*1.1 This specification covers porous metallic sleeve, flange,thrust and spherical bronze-base bearings that are producedfrom
3、 mixed metal powders utilizing powder metallurgy (PM)technology and then impregnated with oil to supply operatinglubrication.1.2 Included are the specifications for the chemical, physi-cal and mechanical requirements of those bronze-base PMmaterials that have been developed and standardized specifi-
4、cally for use in the manufacture of these self-lubricatingbearings.1.3 This specification is applicable to the purchase ofbronze-base bearings (oil-impregnated) that were formerlycovered by military specifications and are intended for govern-ment or military applications. Those additional government
5、requirements that only apply to military bearings are listed inthe Supplementary Requirements section of this specification.1.4 This specification acccompanies Specification B 439that covers the requirements for Iron-Base Powder Metallurgy(PM) Bearings, (Oil-Impregnated).1.5 Typical applications for
6、 bronze-base bearings are listedin Appendix X1.1.6 Bearing dimensional tolerance data are shown in Ap-pendix X2, while engineering information regarding installa-tion and operating parameters of PM bearings is included inAppendix X3. Additional useful information on self-lubricating bearings can be
7、found in MPIF Standard 35 and thetechnical literature.21.7 With the exception of density values for which theg/cm3unit is the industry standard, the values stated ininch-pound units are to be regarded as standard. The SIequivalents of inch-pound units, shown in parenthesis, havebeen converted in acc
8、ordance with IEEE/ASTM SI 10, may beapproximate and are only for information.1.8 The following safety hazards caveat pertains only to thetest methods described in this specification. This standard doesnot purport to address all of the safety concerns, if any,associated with its use. It is the respon
9、sibility of the user of thisstandard to establish appropriate safety and health practicesand determine the applicability of regulatory limitations priorto use.2. Referenced Documents2.1 ASTM Standards:3B 243 Terminology of Powder MetallurgyB 328 Test Method for Density, Oil Content, and Intercon-nec
10、ted Porosity of Sintered Metal Structural Parts andOil-Impregnated BearingsB 439 Specification for Iron-Base Powder Metallurgy (PM)Bearings (Oil-Impregnated)B 939 Test Method for Radial Crushing Strength, K,ofPowder Metallurgy (P/M) Bearings and Structural Materi-alsB 946 Test Method for Surface Fin
11、ish of Powder Metal-lurgy (P/M) ProductsE9 Test Methods of Compression Testing of Metallic Ma-terials at Room TemperatureE29 Practice for Using Significant Digits in Test Data toDetermine Conformance with SpecificationsE 1019 Test Methods for Determination of Carbon, Sulfur,Nitrogen, and Oxygen in S
12、teel and in Iron, Nickel, andCobalt Alloys2.2 MPIF Standard:MPIF Standard 35 Materials Standards for PM Self-Lubricating Bearings42.3 IEEE/ASTM Standard:SI 10 American National Standard for Use of the Interna-tional System of Units (SI): The Modernized MetricSystem31This specification is under the j
13、urisdiction of ASTM Committee B09 on MetalPowders and Metal Powder Products and is the direct responsibility of Subcom-mittee B09.04 on Bearings.Current edition approved June 1, 2008. Published July 2008. Originally approvedin 1966. Last previous edition approved in 2005 as B 438/B 438M 05.2Machine
14、Design Magazine, Vol 54, #14, June 17, 1982, pp. 130-142.3For referenced ASTM standards, visit the ASTM website, www.astm.org, orcontact ASTM Customer Service at serviceastm.org. For Annual Book of ASTMStandards volume information, refer to the standards Document Summary page onthe ASTM website.4Ava
15、ilable from MPIF, 105 College Road East, Princeton, NJ 08540, telephone(609) 452-7700.1*A Summary of Changes section appears at the end of this standard.Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.2.4 ISO Standard:ISO 2795 Plain B
16、earings Made from Sintered MetalDimensions and Tolerances52.5 Government Standards:MIL-PRF-6085 Lubricating Oil: Instrument, Aircraft, LowVolatility6QPL-6085 Lubricating Oil: Instrument, Aircraft, Low Vola-tility6MIL-PRF-17331 Lubrication Oil, Steam Turbine and Gear,Moderate Service6QPL-17331 Lubric
17、ating Oil, Steam Turbine and Gear, Mod-erate Service6MIL-B-5687 Bearings, Sleeve, Washers, Thrust, Sintered,Metal Powder, Oil-Impregnated, General SpecificationFor6MS17795 Bearing, Sleeve, Plain, Sintered Bronze, Oil-Impregnated6MS17796 Bearing, Sleeve, Flanged, Sintered Bronze, Oil-Impregnated6MS21
18、783 Bearing, Washer, Thrust, Sintered Bronze, Oil-Impregnated63. Terminology3.1 DefinitionsThe definitions of the terms used in thisspecification are found in Terminology B 243. Additionaldescriptive information is available in the Related Materialssection of Volume 02.05 of the Annual Book of ASTMS
19、tandards.4. Classification4.1 This specification uses the established three-part alpha-numeric PM Material Designation Code to identify the non-ferrous materials used for self-lubricating PM bearings. Thecomplete explanation of this classification system is presentedin Annex A1.4.2 The following sta
20、ndard oil-impregnated bronze-basebearing material compositions are contained in this specifica-tion:4.2.1 Prefix CTBronze:CT-1000-K19Bronze with 24 % oilCT-1000-K26Bronze with 19 % oilCT-1000-K37Bronze with 12 % oilCT-1000-K40Bronze with9%oil4.2.2 Prefix CTGBronze-Graphite:CTG-1001-K17Bronze, 1 % gr
21、aphite with 22 % oilCTG-1001-K23Bronze, 1 % graphite with 17 % oilCTG-1001-K30Bronze, 1 % graphite with9%oilCTG-1001-K34Bronze, 1 % graphite with7%oil4.2.3 Prefix CTGBronze-High Graphite:CTG-1004-K10Bronze, 4 % graphite with 11 % oilCTG-1004-K15Bronze, 4 % graphite with a trace or up to8%oil4.2.4 Pr
22、efix CTG-MODBronze-Lead-Graphite (MilitaryGrade):CTG-1001-K23-MODBronze, 3 % lead, 1 % graphite with 17 % oil4.2.5 Prefix CFTGBronze-Iron-Graphite (DilutedBronze):CFTG-3806-K14Bronze, 40 % iron, 0.75 % graphite with 22 % oilCFTG-3806-K22Bronze, 40 % iron, 0.75 % graphite with 17 % oil5. Ordering Inf
23、ormation5.1 Purchase orders or contracts for bronze-base, oil-impregnated bearings covered by this purchasing specificationshall include the following information:5.1.1 A copy of the bearing print showing dimensions andtolerances (Section 10),5.1.2 Reference to this ASTM Standard, including date ofi
24、ssue,5.1.3 Identification of bearing material by the PM MaterialDesignation Code (section 4.2),5.1.4 Request for Certification and Test Report documents,if required (Section 16),5.1.5 Type and grade of special Lubricating Oil, if required(section 6.2 or S2.2),5.1.6 Instructions for Special Packaging
- 1.请仔细阅读文档,确保文档完整性,对于不预览、不比对内容而直接下载带来的问题本站不予受理。
- 2.下载的文档,不会出现我们的网址水印。
- 3、该文档所得收入(下载+内容+预览)归上传者、原创作者;如果您是本文档原作者,请点此认领!既往收益都归您。
下载文档到电脑,查找使用更方便
10000 积分 0人已下载
下载 | 加入VIP,交流精品资源 |
- 配套讲稿:
如PPT文件的首页显示word图标,表示该PPT已包含配套word讲稿。双击word图标可打开word文档。
- 特殊限制:
部分文档作品中含有的国旗、国徽等图片,仅作为作品整体效果示例展示,禁止商用。设计者仅对作品中独创性部分享有著作权。
- 关 键 词:
- ASTMB4382008STANDARDSPECIFICATIONFORBRONZEBASEPOWDERMETALLURGYPMBEARINGSOILIMPREGNATED 粉末冶金 PM 轴承 标准规范

链接地址:http://www.mydoc123.com/p-461234.html