ASTM D128 PDF

We perform lubricating grease quality testing by ASTM D, which gives several methods for determining and estimating the makeup of lubricating greases. These test methods for analysis cover greases of the conventional type, which consist essentially of petroleum oil and soap. The constituents that can be. ASTM D standard test methods for analysis of lubricating grease. ASH DETERMINATION 7. General The percentage of ash shall not be included in the.

Author: Brakazahn Arashilmaran
Country: Guadeloupe
Language: English (Spanish)
Genre: Medical
Published (Last): 11 June 2012
Pages: 354
PDF File Size: 10.47 Mb
ePub File Size: 8.95 Mb
ISBN: 249-5-21945-417-4
Downloads: 11125
Price: Free* [*Free Regsitration Required]
Uploader: Arashitilar

This test method is intended primarily for application to greases containing thickeners that are essentially insoluble in n -hexane, and to greases that cannot be analyzed by conventional methods because of the presence of such constituents as asrm fluids or nonsoap-type thickeners, or both.

Power by seonoco All Rights Reserved: Analysis, Extraction, Fat content, Fluid content, Free alkali content, Free fatty acid content, Glycerin content, Insolubles content, Lubricating grease, Petroleum oil content, Soap content, Soxhlet apparatus, Thickener content, Water content. NOTE 3 – The determination of the total ash should not in sstm be regarded as of any great importance. Any of the test methods described herein are best used by an experienced grease analyst who may also be able to make appropriate adaptations of the techniques as occasion requires.

NOTE 4 – This test method gives more concordant results than the routine method Section 8but it requires more time and manipulation. It is, however, sometimes required.

Liquid and vapor cause severe burns. Link to Active This link will always route to the current Active version of the standard.

  ISCHEMIA ACUTA ARTI INFERIORI PDF

ASTM D128 – 98(2014)E1

Take the smart route to manage medical device compliance. Learn more about the cookies we use and how to change your settings. Results will always be low in the presence of easily reducible oxides of volatile metals. Contact with water liberates d12 amounts of heat running the acid in carefully from a pipet inserted under a small watch glass covering the crucible.

The faster, easier way to work with standards. This website is best viewed with browser version of up to Microsoft Internet Explorer 8 or Firefox 3.

Warm the crucible and contents on a steam bath until effervescence has ceased. You may experience issues viewing this site in Internet Explorer 9, 10 or Rinse the watch glass with water into the crucible. Historical Version s – view previous versions of d1228 Translated Version s: These test methods are applicable to many, but not all, greases. Free Alkali and Free Acid.

Confirm the presence of the several bases by suitable chemical tests, following any standard scheme of qualitative analysis. Contact with organic material may cause fire.

ASTM D standard test methods for analysis of lubricating grease – YONGRUN

Contact with us now Your mail: Evaporate the contents of the crucible to dryness and ignite the whole at a low red heat, adding a few small pieces of dry NH4 2CO3 Warning – Harmful if swallowed to drive off the excess SO3. Click to learn more. Cool the crucible and contents in a desiccator and weigh, reporting the result as percentage of ash.

Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard. Historical Version s – view previous versions of standard.

  FUNDAMENTALS OF COMPUTER ALGORITHMS ELLIS HOROWITZ SARTAJ SAHNI PDF

ASTM D – 98()E1 – Standard Test Methods for Analysis of Lubricating Grease

No other units of measurement are included in this standard. This determination is often unsatisfactory because of interaction between Na2CO3 derived from the soap and inorganic insolubles. May be fatal if swallowed. You may find similar items within these categories by selecting from the choices below:. In some cases, these constituents can react with asrm acid or alkaline solutions.

The constituents that can be determined are soap, unsaponifiable matter petroleum oil, and so forthwater, free alkalinity, free fatty acid, fat, glycerin, and insolubles. Details on other test methods for grease analysis can be found in other reference material. Zinc is shown by the yellow color of the ash while hot, and lead may be indicated by the presence of metallic globules or by the yellow color of the ash when cold.

Alternative Test Method 9. Please download Chrome or Firefox or view our browser tips. Ash determinations made on the same sample in different laboratories are likely to vary widely. Wstm and continue Learn more about the cookies we use and how to change your settings.

There is always likelihood of reaction with the porcelain crucible itself on account of the long continued heating necessary to burn off all carbon.