You are being redirected because this document is part of your ASTM Compass® subscription.
    This document is part of your ASTM Compass® subscription.

    If you are an ASTM Compass Subscriber and this document is part of your subscription, you can access it for free at ASTM Compass
    STP115

    A Metal Cleaning Test Using Radioactive Stearic Acid as Soil

    Published: 01 January 1952


      Format Pages Price  
    PDF (708K) 15 $25   ADD TO CART
    Complete Source PDF (1.9M) 64 $55   ADD TO CART

    Cite this document

    X Add email address send
    X
      .RIS For RefWorks, EndNote, ProCite, Reference Manager, Zoteo, and many others.   .DOCX For Microsoft Word


    Abstract

    A metal cleaning test method, in which radioactive stearic acid is used as the soil, is described. Procedures are given for producing a uniform, reproducible, abraded surface on steel test pieces, and for applying very thin, uniform reproducible films of tagged stearic acid to the surface of metal test disks. Descriptions are given of special apparatus used in preparation and coating of metal test pieces. Test data are given showing the removal from steel of the stearic acid soil by single-component alkali solutions, with variation in cleaning time and solution concentration, and by one organic detergent solution, with variation in cleaning time. Distinct differences were found in the rate of soil removal and the amount of residual soil left by the different cleaning solutions when used for still cleaning at 90 C. With each cleaning solution, the residual soil on a test specimen tended to reach an equilibrium value after a certain period of cleaning and did not decrease further with increased cleaning times. With a particular alkali solution, variation of the concentration over the range 0.1 to 1.0 per cent Na2O had little effect on cleaning results (2 min immersion at 90 C), but increasing the concentration above 1.0 per cent Na2O caused a very pronounced decrease in cleaning efficiency.


    Author Information:

    Hensley, J. W.
    Wyandotte Chemicals Corp., Wyandotte, Mich.

    Skinner, H. A.
    Wyandotte Chemicals Corp., Wyandotte, Mich.

    Suter, H. R.
    Wyandotte Chemicals Corp., Wyandotte, Mich.


    Committee/Subcommittee: D12.16

    DOI: 10.1520/STP46764S