Journal of Materials Science

, Volume 14, Issue 11, pp 2581–2588 | Cite as

Glass workability study and correlation of melting history, microstructure, apparent liquidus temperature, and mechanical strength

  • Henry S. -Y. Hsich


The glass workability during the forming process has been discussed from the aspects of rheology, heat transfer, and microstructure. The rheological behaviour and heat-transfer characteristic of glass determine the workability of glass. However, the accidentally caused changes of glass structure during melting, fining and forming can affect the workability; therefore, the apparent liquidus temperature and crystal structure of bad workability glass have been studied and compared with the good workability glass. It is found that the apparent liquidus temperature study seems to be an effective method for determining the good and bad workability glasses. The results from the mechanical strengths study of the good workability glass shows evidence of microvoids of the order of 400 Å existing in the glass structure. However, there is no such evidence in the bad workability glass; therefore, it is believed that a large flaw size, or stress concentration around the inclusions existed in the bad workability glass.


Polymer Microstructure Heat Transfer Crystal Structure Mechanical Strength 
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Copyright information

© Chapman and Hall Ltd. 1979

Authors and Affiliations

  • Henry S. -Y. Hsich
    • 1
  1. 1.Engineering and Research CenterBrockway Glass Company, IncBrockwayUSA

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