The float glass furnace production line has been in service for seven years. Over time, the hooked bricks of the furnace have endured stress from temperature changes, erosion from molten glass within the furnace, and exposure to various complex atmospheres. This has led to issues such as fractures and peeling off, resulting in a defect approximately 5000 mm in size. The fire has extended to the outer space of the furnace, causing localized high temperatures and reducing the support strength of the iron plate. As a result, the furnace's chest wall has tilted inward, posing a serious threat to its structural safety.To address these challenges, the company utilized high-temperature ceramic welding technology in conjunction with a high-temperature furnace periscope for welding the broken tuckstone. This effectively protected the bracket plate and extended the furnace's service life by fifteen months.