BS-5600-2.11-1980 ISO-4495-1978.pdf
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1、BRITISH STANDARD BS 5600-2.11: 1980 ISO 4495:1978 Powder metallurgical materials and products Part 2: Methods of sampling and testing metallic powders Section 2.11 Determination of the lubricant content of lubricated metallic powders: Soxhlet extraction method ISO title: Lubricated metallic powders
2、Determination of lubricant content Soxhlet extraction method UDC 621.762:669-492.2:543.062:621.892 Licensed Copy: sheffieldun sheffieldun, na, Mon Dec 04 15:55:30 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 5600-2.11:1980 This British Standard, having been prepared under the direction of the Iron
3、and Steel Standards Committee, was published under the authority of the Executive Board and comes into effect on 29 February 1980 BSI 12-1999 The following BSI references relate to the work on this standard: Committee reference ISE/65 Draft for comment 77/75763 DC ISBN 0 580 11193 8 National forewor
4、d This Section of BS 5600 is identical with ISO 4495 “Lubricated metallic powders Determination of lubricant content Soxhlet extraction method” published by the International Organization for Standardization (ISO). Terminology and conventions. The text of the International Standard has been approved
5、 as suitable for publication, without deviation, as a British Standard. Some terminology and certain conventions are not identical with those used in British Standards; attention is especially drawn to the following. The comma has been used as a decimal marker. In British Standards it is current pra
6、ctice to use a full point on the baseline as the decimal marker. Where the words “International Standard” appear, referring to this standard, they should be read as “British Standard”. Additional information. This Section is one of a series that comprises BS 5600. A list of the Sections of BS 5600 a
7、ppears in Table 1 of the introduction and contents (Section 1.1). Section 1.2 is a glossary of technical terms that have particular application in the powder metallurgical industry and which are used in the Sections of this British Standard. A British Standard does not purport to include all the nec
8、essary provisions of a contract. Users of British Standards are responsible for their correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. Summary of pages This document comprises a front cover, an inside front cover, pages i and ii, page
9、s 1 and 2 and a back cover. This standard has been updated (see copyright date) and may have had amendments incorporated. This will be indicated in the amendment table on the inside front cover. Amendments issued since publication Amd. No.Date of issueComments Licensed Copy: sheffieldun sheffieldun,
10、 na, Mon Dec 04 15:55:30 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 5600-2.11:1980 BSI 12-1999i Contents Page National forewordInside front cover 1Scope and field of application1 2Principle1 3Apparatus and reagent1 4Sampling1 5Procedure1 6Expression of results1 7Test report2 Figure Soxhlet unit2
11、Licensed Copy: sheffieldun sheffieldun, na, Mon Dec 04 15:55:30 GMT+00:00 2006, Uncontrolled Copy, (c) BSI ii blank Licensed Copy: sheffieldun sheffieldun, na, Mon Dec 04 15:55:30 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 5600-2.11:1980 BSI 12-19991 1 Scope and field of application This Internat
12、ional Standard specifies a method for the determination of the lubricant content of lubricated metallic powders under standardized conditions using the Soxhlet apparatus. 2 Principle Extraction of the lubricant by an appropriate solvent in a Soxhlet unit. Volatilization of the solvent after extracti
13、on and determination of the mass of the residue. 3 Apparatus and reagent 3.1 Analytical balance, capable of weighing at least 100 g to an accuracy of 0,001 g. 3.2 Soxhlet unit, as in the Figure, consisting of the following parts: 3.2.1 Bulb-type condenser 3.2.2 Soxhlet extractor of volume 75 to 100
14、ml. 3.2.3 Extraction thimble (cellulose), filter paper and cotton wool, which in the case where the lubricant content is below 0,5 % have been previously extracted with solvent. The length of the thimble must be greater than the height of the syphon. 3.2.4 Round bottom flask with a capacity of 100 m
15、l, containing a boiling aid. NOTEThe conical joints of the Soxhlet unit must not be greased. 3.2.5 Heating hood, of sufficient capacity to evaporate the solvent at a rate of not less than 25 ml/min. 3.3 Evaporating dish 3.4 Organic solvent, suitable for extraction of the lubricant involved. Examples
16、 of such solvents are chlorinated hydrocarbons, xylene, toluene and petroleum ether. WARNING Inhalation of the vapours of organic solvents such as carbon tetrachloride is dangerous. 4 Sampling 4.1 In general, the powder should be tested in the as received condition. 4.2 The lubricant content shall b
17、e determined on two test portions. 4.3 The mass of the test portion shall be approximately 10 g. (If the lubricant content is greater than 2 %, the mass of the test portion shall be approximately 5 g.) 5 Procedure 5.1 Weigh, to the nearest 0,001 g, approximately 10 g (or 5 g) of the test sample. Pou
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