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A glass-annealing furnace is a furnace, generally electrically heated, with a control system capable of following a cam by which the temperature can be made to go through a definite cycle over a period of days, or even weeks, if the glass is massive. Glass has a softening temperature above which it can be easily bent or molded to shape, and an annealing temperature below which the properties of the glass remain fixed down to room temperature. Between these two points is the annealing range in which it is essential to cool the glass very slowly to remove all strain and to drive the refractive index up to its stable maximum value.
Applied Test Systems, Inc. - Butler, PA
Ayers Engineering & Mfg. - Atlanta, TX
Grieve Corp. - Round Lake, IL
Harrop Industries, Inc. - Columbus, OH
Thermal Technology, LLC, Member of the INTECO Group - Santa Rosa, CA
Thermcraft, Inc. - Winston-Salem, NC
glass annealing furnace
A furnace, generally electrically heated, with a control system capable of following a cam by which the temperature can be made to go through a definite cycle over a period of days, or even weeks, if the glass is massive. Glass has a softening...
The process of heating and slowly cooling a solid material, like glass or metal, to stabilize its thermal, electrical or optical properties or, as in semiconductor materials, to reverse lattice damage resulting from ion implantation of dopants.
An oven or furnace that possesses the design requirements and heat control necessary to anneal glass for the optical industry.
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