Thermovacuum fixation of ceramic lining

Over 27 years of operation, the reusable space shuttle "Discovery" completed 39 space missions. During each launch, the primary load was on the outer shell of the shuttle, made of durable ceramic tiles. Each tile had a unique identification number and was attached using heat-resistant adhesive, capable of withstanding enormous stresses, reaching 112 MPa in tensile strength.

Technologists at Weartech, in collaboration with the Ukrainian company "Thermolite-Invest", have developed a system for thermovacuum fixation of wear-resistant shaped lining elements based on zirconium oxide, aluminum oxide, silicon carbides, and other types of ceramics. This system provides protection for technological equipment from various types of wear, achieving a tensile strength of at least 115 MPa.

Thermovacuum fixation technology has proven to be a highly effective process, ensuring the stability of key parameters regardless of the base material, whether it be steel, cast iron, or other mineral and non-mineral materials. It allows for efficient protection of mill fan blades, exhauster volutes, dredger, and earth pump impellers, as well as other technological equipment using fine-segment shaped ceramic lining.

After bonding and thermal processing using this technology, the equipment and lining are ready for operation in the shortest possible time without losing strength characteristics.

The use of vacuum in the process of fixing fine-segment ceramic lining with special adhesive has several key advantages:

• Vacuum helps remove air from under the ceramic segments and the adhesive layer, which is important for preventing the formation of air bubbles that reduce the adhesive properties of the glue.
• Vacuum creates uniform pressure on the entire surface of the ceramic segments, ensuring tight adhesion of the segments to the surface and preventing shifting or gap formation.
• Vacuum improves the penetration of adhesive into micro-cracks and pores on the surface of the equipment and the reverse side of the ceramic segments, enhancing the strength of the fixation.
• Vacuum accelerates and evenly distributes the polymerization process of the adhesive, especially if heat-resistant glue is used, improving the efficiency and speed of the fixation process.
• In vacuum conditions, the influence of external factors such as moisture and oxygen, which can negatively affect the adhesive polymerization process and cause ceramic segment shifting, is eliminated.

In conclusion, it can be said that the successful thermovacuum fixation of fine-segment ceramic lining procedure requires thorough preparation, material selection, condition control, and adherence to all technological recommendations. Attention must be paid to every stage of the process to ensure the durability and reliability of the lining attachment to the technological equipment.

Weartech experts possess the necessary knowledge and practical experience to effectively carry out thermovacuum fixation of ceramic lining and protect your technological equipment.