$

Self Supporting Cones 5 Pack of 20

$11.75
    • Brand: Orton Cones
    • Product Code: Orton SS 5
    • Availability: In Stock

    Description

    #5 Self Supporting Witness Cones - Pack of 20    

    Self-Supporting Cones are the most accurate and easiest to use pyrometric cones available. 
    They feature a built-in base for support during firing and require no cone holder or plaque. Correct height (1 ¾”) and angle (8°) are built in to help insure reproducible firings time after time. 
    Self-Supporting Cones are popular as witness cones on the kiln shelf to visually record and evaluate the heat work (the effect of temperature and time at temperature) in different locations throughout  the kiln.
    Pyrometric cones are recommended by glaze and kiln manufacturers to assure the proper amount of heat work was achieved during firing.  Achieving the proper amount of heatwork allows the optimum ceramic properties and colors to be developed during the firing process.  Pyrometric Cones will also help identify any subtle changes taking place inside the kiln before they impact your ware (changes over time due to thermocouple drift, degrading heating elements, etc.).
    Thermocouples only measure temperature at one point inside the kiln.  Pyrometric cones can be placed throughout the ware setting so you can easily monitor the heatwork your kiln produces where your product is being fired. 

    3 cone method for monitoring heat-work
    Pyrometric cones are slender pyramids made from about 100 carefully controlled compositions. Each cone number is unique in measuring temperature within a small temperature range (less than 30°C). Cones measure the amount of heat absorbed. As the cone nears its maturing range, it softens and the tip begins to bend, drawn down by the influence of gravity.

    Pyrometric cones are useful in determining when a firing is complete, if the kiln provided enough heat, if there was a temperature difference in the kiln or if a problem occurred during firing. 
    Cones are made from carefully controlled compositions and they bend in a repeatable manner (over a relatively small temperature range- less than 40ºF). 
    Small (junior) cones are used in a Kiln-Sitter™.

    Cone/Temperature Conversion Chart
    ConeTemp at 108ºF/hrTemp at 270ºF/hr

    Kiln Color

    Ware and Glaze Types
    1023452381WhiteStoneware Glaze
    923002336  
    822802320  
    722622295  
    622322269 Porcelain Bisque
    521672205  
    421242161 Porcelain Glaze
    321062138  
    220882127  
    120792109  
    0120462080Yellow 
    0220162052  
    0319872019  
    0419451971  
    0518881911  
    0618281855 Bisque,Low Glaze
    0717891809OrangeRed Family Glazes
    0817281753  
    0916881706  
    01016571679  
    01116071641  
    01215821620  
    01315391582Red 
    01414851540  
    01514561504  
    01614221465  
    01713601405 Glass Sagging
    01813191353 China Paints
    01912521283 Metallics, Lusters
    02011591180Dull RedDecals
    02111121143 Glass Paint
    02210871094 
     


    Reviews (0)

    Write a review

    Note: HTML is not translated!
        Bad           Good