Graphite Hot Zones

The buyers guide to vacuum furnaces: 10 things to know #1

What are the elements that contribute to the development and perfect functioning of a vacuum furnace?

Do not be intimidated by the size of the topic: we will proceed gradually, I will address the topic by stages to help you read and understand.
This is the first of two articles...

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Published on 12/12/2016
Categories: Insider tips

Vacuum furnace hot zone: graphite vs all-metal design #1

Molybdenum and graphite are the most popular choices as hearth materials in vacuum furnaces. Throughout the last 40 years, the heat treating industry has experienced a significant shift in the type of hot zone most commonly used in furnaces. In the 1970s, most of the heat zones installed were all-metal hot zones. Today, however, the vast majority are graphite-based hot zones. But, what is the most efficient design in order to minimize hot zone losses and reduce power consumption?

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