Metamics

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Protective Ceramic Tubes to Shield Temperature Sensors

Known for their high thermal conductivity, Metamics are recommended for use in the primary production of Superalloys and special steels in vacuum.

Widely used in the vacuum investment casting industry in the UK, Europe, USA and Japan, the ceramic composite material is used for the manufacture of Metamic Pyrometer Sheaths, protective ceramic tubes used to shield temperature sensors—typically thermocouples or pyrometers—when measuring the temperature of molten metals.

Crucial in foundries, smelters, and casting operations, especially in non-ferrous metallurgy, they provide excellent thermal shock resistance and chemical resistance.

Able to be used in temperatures up to 1900°C

Metamic Pyrometer Sheaths can be used in temperatures up to 1900°C and, since no inner sheath is required, give rapid temperature response with each dip immersion.

Often used to calibrate or double-check the readings off a semi-continuous Radiation Pyrometer, they can be used multiple times, and depending on foundry practices, this can be upwards of 40 times, whilst remaining fully stable and suffering no contaminant issues to the melt.

A range of standard sizes are available up to a maximum length of 300mm.

Benefits of Magma Ceramics Metamics

• Can be used multiple times
• Can be used in temperatures up to 1900°C
• Prevents molten metal from sticking, improving sensor life
• A range of standard sizes are available up to a maximum length of 300mm