SEFPRO CARE® Repair Hot Bottom AZS, the solution for oxy-fuel furnace’s bottom
During routine monitoring, the client identified a serious risk of material leakage at the bottom of their 60 m² all-oxygen furnace, a key component of their production line.
This situation created a difficult dilemma: shutting down for a cold repair would have meant a complete production stop, resulting in significant financial losses and delays in fulfilling essential orders. Continuing operations, on the other hand, posed the danger of a severe molten glass leak, which could lead to irreversible equipment damage and major safety hazards.
Faced with this urgent challenge, the client turned to SEFPRO CARE®’s advanced hot repair technology, a solution designed to restore furnace integrity without interrupting production.
Repair Hot Bottom AZS, the key to reliable oxy-fuel furnace performance
Backed by a dedicated emergency response team with extensive hands-on experience, SEFPRO CARE® is committed to solving unexpected production challenges and ensuring uninterrupted operations for glass manufacturers. When a critical hot bottom repair was required by a customer, our team mobilized immediately and arrived on-site without delay. Working in extreme conditions, close to temperatures approaching a thousand degrees Celsius, SEFPRO experts collaborated with the construction crew to execute this complex “surgical” intervention.
The process began with a precise diagnosis using endoscopic inspection to identify the erosion and define a detailed technical plan. Preparations included draining molten glass, drilling the breast wall, and filling eroded areas with AZS crushed blocks. A customized injection lance was designed to match on-site conditions, and a screw pump trial run ensured flawless execution. This combination of technical rigor and rapid response exemplifies SEFPRO CARE®’s role as a trusted partner in maintaining furnace integrity without compromising production.
SEFPRO’s rapid response and cutting-edge hot repair materials helped us avoid immeasurable production losses. The smooth operation over the past few months is the strongest proof of success!
From emergency to performance: SEFPRO CARE® Repair Hot Bottom AZS in action
SEFPRO CARE® is dedicated to ensuring uninterrupted glass production through rapid, technically advanced repairs. When an urgent hot bottom repair was needed, our team mobilized immediately and worked under extreme conditions near temperatures of a thousand degrees Celsius. Using Repair Hot Bottom AZS material engineered for corrosion resistance and thermal stability, the repair was executed with precision through a custom injection system. In just five hours of injection and twenty-three hours of sintering, the furnace was ready to restart within 120 hours, minimizing disruption and safeguarding the client’s operations.
The repair was completed within an exceptionally short timeframe:
- Only five hours of injection
- Followed by twenty-three hours of sintering
- Allowing the furnace to restart in only 120 hours
This rapid intervention minimized production disruption and safeguarded the client’s operations. Three months after the repair, SEFPRO CARE® conducted a dedicated follow-up inspection. The results confirmed that the hot-repaired area remained stable and free of abnormalities, proving the long-term performance of our Repair Hot Bottom AZS solution and reinforcing our commitment to keeping glass furnaces running without costly downtime.
