ASTM D1742-2006 Standard Test Method for Oil Separation from Lubricating Grease During Storage《贮存过程中油从润滑脂中分离的标准试验方法》.pdf
《ASTM D1742-2006 Standard Test Method for Oil Separation from Lubricating Grease During Storage《贮存过程中油从润滑脂中分离的标准试验方法》.pdf》由会员分享,可在线阅读,更多相关《ASTM D1742-2006 Standard Test Method for Oil Separation from Lubricating Grease During Storage《贮存过程中油从润滑脂中分离的标准试验方法》.pdf(5页珍藏版)》请在麦多课文档分享上搜索。
1、Designation: D 1742 06An American National StandardStandard Test Method forOil Separation from Lubricating Grease During Storage1This standard is issued under the fixed designation D 1742; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revi
2、sion, the year of last revision. A number in parentheses indicates the year of last reapproval. Asuperscript epsilon (e) indicates an editorial change since the last revision or reapproval.This standard has been approved for use by agencies of the Department of Defense.1. Scope1.1 This test method c
3、overs the determination of the ten-dency of a lubricating grease to separate oil during storage inboth normally filled and partially filled containers.1.2 This test method is not suitable for greases softer thanNLGI No. 1 grade.1.3 The values stated in SI units are to be regarded asstandard, except
4、for the dimensions in Fig. 2 and Fig. 5, whereinch-pound units are standard.1.4 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 determi
5、ne the applica-bility of regulatory limitations prior to use. For a specifichazard statement, see 7.1.2. Referenced Documents2.1 ASTM Standards:2E11 Specification for Wire Cloth and Sieves for TestingPurposes2.2 Other Standard:NLGI Grease Consistency Classification33. Terminology3.1 Definitions:3.1.
6、1 lubricating grease, na semi-fluid to solid product ofa thickener in a liquid lubricant.3.1.1.1 DiscussionThe dispersion of the thickener forms atwo-phase system and immobilizes the liquid lubricant bysurface tension and other physical forces. Other ingredients arecommonly included to impart specia
7、l properties.3.1.2 thickener, nin lubricating grease, a substance com-posed of finely-divided particles dispersed in a liquid lubricantto form the products structure.3.1.2.1 DiscussionThe thickeners can be fibers (such asvarious metallic soaps) or plates or spheres (such as certainnon-soap thickener
8、s), which are insoluble or, at most, only veryslightly soluble in the liquid lubricant. The general require-ments are that the solid particles be extremely small, uniformlydispersed, and capable of forming a relatively stable, gel-likestructure with the liquid lubricant.1This test method is under th
9、e jurisdiction of the ASTM Committee D02 onPetroleum Products and Lubricants and is the direct responsibility of SubcommitteeD02.G0 on Lubricating Grease.Current edition approved May 1, 2006. Published May 2006. Originallyapproved in 1960. Last previous edition approved in 2000 as D 174294 (2000)e1.
10、2For 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.3Available from NLGI, 4635 Wyandotte St., Kansas City, MO 641
11、12.FIG. 1 Pressure Bleeding Test Cell A1Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.3.1.3 oil separation, nthe appearance of a liquid fractionfrom an otherwise homogeneous lubricating composition.4. Summary of Test Method4.1 The s
12、ample of grease, supported on a 75-m (No. 200)sieve, is subjected to 1.72 kPa (0.25 psi) air pressure for 24 hat 25C (77F).Any oil seepage that occurs drains into a beakerand is weighed.5. Significance and Use5.1 When a lubricating grease separates oil, the remainingcomposition increases in consiste
13、ncy. This can affect the abilityof the product to function as designed.5.2 It has been found that the results of this test correlatedirectly with the oil separation that occurs in 35-lb pails ofgrease during storage.in. mm in. mm in. mm in. mm0.0021 0.053 158 41.3 0.500 12.70 4716 112.70.0029 0.074
14、134 44.4 0.510 12.95 412 114.30.010 0.25 2 50.8 0.520 13.20 41116 119.1116 1.59 212 63.558 15.87 434 120.618 3.17 31116 93.734 19.05 42632 123.03316 4.76 418 104.8 1 25.4 514 133.314 6.35 4.360 110.74 114 31.8 6 152.4516 7.94 4.365 110.87 138 34.9 612 165.138 9.52 438 111.1 3 76.2FIG. 2 Detailed Dra
15、wing of Pressure Bleeding Test Cell AD17420625.3 This test method is not intended to predict oil separationtendencies of the grease under dynamic conditions.6. Apparatus6.1 Test Apparatus4, 5, 6The assembled apparatus consistsof a tightly fitting cup and cover which contains a 75-m (No.200) sieve st
16、rainer for supporting the grease, a funnel forcollecting separated oil, and a 20-mL beaker for retaining theseparated oil. A fitting is provided in the cover for inlet air(1.72 kPa (0.25 psi) and a hole is provided in the side of thecup to prevent back pressure. Fig. 1 is a photograph of adisassembl
17、ed apparatus. The details of construction are givenin Fig. 2. The 75-m (No. 200) stainless steel sieve shallconform to the requirements of Specification E11. The diam-eter of the 75 m (No. 200) sieve shall be 104.8 mm (418 in.),completely clear with no solder showing.6.2 Air Pressure Supply and Regu
18、lation An air pressuresupply, controlled by reducing valves or regulators, capable ofmaintaining air pressure at 1.72 6 0.07 kPa, should be used. Amanometer, or other suitable pressure indicating device, and apressure relief valve to protect against pressure surge should beincluded in the pressure s
19、ystem.7. Reagents7.1 Mineral Spirits,(WarningCombustible. Vapor harm-ful.)8. Sampling8.1 The sample presented for analysis should be largeenough to make possible the selection of a representativeportion for testing.8.2 Examine for any indication of non-homogeneity such asoil separation, phase change
- 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:
- ASTMD17422006STANDARDTESTMETHODFOROILSEPARATIONFROMLUBRICATINGGREASEDURINGSTORAGE 贮存 过程 中油 润滑脂 分离 标准
![提示](http://www.mydoc123.com/images/bang_tan.gif)
链接地址:http://www.mydoc123.com/p-510386.html