forehearth

technology

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Last updated

June 26, 2026

Quick Summary

A forehearth is a technological component used in industrial processes, particularly in glassmaking and metallurgy. In glassmaking, it's a chamber that receives molten glass from a furnace, allowing it to cool and condition before being shaped into products. This controlled cooling is crucial to prevent issues like devitrification, where crystals form in the molten glass.1

In metallurgy, a forehearth can refer to the forward extension of a smelting furnace's hearth or a separate receptacle for molten material, aiding in settling impurities. It essentially serves as a controlled pathway for molten substances to flow from a primary furnace to subsequent processing stages.21

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industrial glass
The forehearth
From the conditioning chamber, glass is taken in a set of narrow channels, called the forehearth, to the forming machines. The residence time of glass in a tank varies from a half-day to 10 days, depending on the pull rate, or the rate at…
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From the conditioning chamber, glass is taken in a set of narrow channels, called the forehearth, to the forming machines. The residence time of glass in a tank varies from a half-day to 10 days, depending on the pull rate, or the rate at…
Read More