# Furnace thermal shields

Graphite or felt shields, screens, and baffles for thermal radiation control in furnaces and vacuum chambers.

Family: Thermal applications

## Description
**Thermal shields and screens** direct or block radiation inside the furnace. They are made from machined graphite or felt (soft/rigid) depending on temperature, vacuum, and stiffness needs.

## Processes
- Radiative thermal shielding
- Vacuum and heat-treatment furnaces
- Protection of cold or load zones
- Thermal uniformity improvement

## Challenges
- Local overheating of the load
- Radiation losses toward walls
- Contamination or uneven shadowing

## Advantages
- Radiative heat-flow control
- Geometries machinable in graphite or cut from felt
- Compatible with vacuum and inert atmospheres

## Limitations
- Design depends on chamber thermal optics
- Oxidation in air at high temperature
- Must be coordinated with heating elements and insulation

- [Applications](https://esgraf.com/en/applications)
- [Alternate](https://esgraf.com/aplicaciones/hornos-escudos-termicos)