6-4.High temperature heating method – Frame heating

Basic principle

The heating target of frame heating is heated with three elements.

1.Direct heating from heat source
2.Heating by reflected light from the wall
3.Heating by radiant heat on the wall

Preventing adverse effects of updraft

Open heating also heats the air around the object to be heated, causing the air to expand thermally and become lighter, creating an updraft.
Air at normal temperature and normal pressure flows into the space that has become lean and low pressure due to the updraft.
This flowing air comes into contact with the object to be heated and cools it down to room temperature, which is not good for heating work.
Frame heating does not generate a flow of cooling air, creating an effective heating environment.
It can also be used as a masking material for parts of the insulation that you do not want to heat.
Since this frame itself becomes hot when used continuously, its effectiveness as a masking material decreases.
Forced cooling is required for continuous use.

Verification of the high temperature heating method-Difference between flat surface heating and frame heating

If inert gas is flowed into the frame, oxidation-free or low-oxidation processing can be performed.
Covering the top of the frame with quartz glass will make it more perfect.

Comparison of open heating and frame heating

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