Overcoating

In glass melting furnaces, continuous contact with molten glass causes gradual wear on the sidewalls over time. This can lead to energy losses and the risk of glass leakage, compromising both the efficiency and safety of the furnace. Overcoating is a critical hot repair method designed to reinforce these worn areas and extend the service life of the furnace.

Process Description

During overcoating, refractory blocks are carefully pushed from the outside of the furnace into the worn inner surface. Since this procedure is carried out under extreme temperatures, it requires both high technical expertise and strict safety measures. The additional refractory layer strengthens the furnace structure, reduces the risk of glass leakage, and improves energy efficiency.

Key Advantages

• Extended Furnace Life: Overcoating can prolong furnace operation by 1–2 years without the need for a full rebuild.
• Sustained Production Capacity: The reinforced furnace can continue running at maximum output.
• Energy Efficiency and Safety: By minimizing heat losses and preventing leakage, overcoating ensures safer operations and lower energy costs.

Safety First

Overcoating is classified as a high-risk hot repair due to the extreme heat involved. Therefore, every step of the process is performed in full compliance with international HSE standards. With extensive experience in hot repair applications, our expert team prioritizes both worker safety and operational continuity.