Viscous Pour Point of Microquantities of Fluid Lubricants
作者:
MichaelN. Gardos,
期刊:
A S L E Transactions
(Taylor Available online 1975)
卷期:
Volume 18,
issue 1
页码: 31-38
ISSN:0569-8197
年代: 1975
DOI:10.1080/05698197508982744
出版商: Taylor & Francis Group
数据来源: Taylor
摘要:
A method is described involving the measurement of the viscous desolidification (“pour”) point of wax-free lubricant fluids. This method is especially useful for pour point testing of experimental quantities, since only six to sixteen drops of the oil are required for a single determination (automatically performed in duplicate) with nearly full recovery of the sample. The technique consists of: (a) rapidly freezing a small, predetermined amount of the oil on the side of a small test tube to form a frozen drop of given dimensions; (b) immersing duplicates of the charged and stoppered tubes into a cold bath; and (c) measuring the temperature when the drop front has moved a predetermined distance as the bath warms up. Tests with experimental as well as commercial lubricants indicate excellent correlation with the ASTM D 97 pour point procedure. The repeatability of the test is ±2 F. The validity of the new procedure is substantiated by fluid flow theory.Presented at the 29th Annual Meeting in Cleveland, Ohio, April 28–May 2, 1974
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