Question: If corrosive gases need to be handled, are there any special treatments for the furnace lining or seals?

Detailed Answer:

When your process involves handling materials that release corrosive components (such as halogens, sulfides, etc.) at high temperatures, standard equipment configurations may face corrosion risks. We provide effective protection solutions for such special operating conditions.

I. Core Protection: Specialized Coatings for Critical Components

Corrosive gases primarily threaten the induction coil and the inner wall of the furnace shell. Our strategy involves applying protective coatings:

• Induction Coil Coating: Apply high-temperature resistant insulating coatings to the surface of the copper induction coil, such as ceramic coatings (e.g., alumina) or Teflon (PTFE) coatings (depending on the temperature). This effectively isolates the corrosive medium from the copper tube, preventing coil corrosion and breakdown.

• Furnace Shell Inner Wall Coating: Spray a corrosion-resistant protective layer on the stainless steel inner wall of the furnace shell, creating a physical barrier.

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II. Upgrading the Sealing System

Standard fluororubber (FKM) O-rings are sufficient for most situations. However, for highly corrosive atmospheres, we can upgrade the sealing materials to perfluoroelastomer (FFKM) , which offers superior corrosion resistance, or utilize non-elastomeric solutions like flexible graphite gaskets/metal spiral wound gaskets to ensure long-term reliability of the sealing system.

III. Important Note

Early communication is crucial: If you anticipate corrosion risks in your process, it is essential to communicate with us in detail during the initial equipment design and selection phase. We will tailor the most economical and effective protection plan based on your specific corrosive medium composition and concentration, solving the problem at the design source and avoiding the significant costs of subsequent modifications.

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