Method of Soldering Repair of a Component in a Vacuum and Adjusted Partial Oxygen Pressure and Global Pressure

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This patent describes a method for repairing cracks or defects in high-performance metal components (such as those used in turbines) using a soldering technique in a special vacuum environment with strictly controlled low oxygen partial pressure. The method leverages specialized nickel-based solder alloys with precise compositions to ensure strong and reliable repairs without inducing unwanted oxidation or material evaporation. The process is particularly suitable for components made from nickel-, cobalt-, or iron-based superalloys, often found in turbine blades and combustion chamber elements.

Use CasesContent extracted from patent full text and abstract with AI.

• Repair of turbine blades in gas or steam turbines for aerospace or energy generation industries.
• Reconditioning of high-temperature combustion chamber components.
• Maintenance and refurbishment of components made from nickel-based superalloys.
• Restoration of single-crystal or directionally solidified metal parts exposed to extreme thermal stress.
• Crack sealing and structural repair in advanced engine components to extend their service life.

BenefitsContent extracted from patent full text and abstract with AI.

• Reduces oxidation and evaporation risks during high-temperature soldering repairs by using low oxygen partial pressures.
• Produces strong, durable repairs that can withstand high operational temperatures and mechanical stresses.
• Enables re-use and life extension of expensive, high-performance components, saving costs and reducing waste.
• Compatible with intricate and sophisticated metal parts, including single-crystal and directionally solidified structures.
• Provides flexibility in solder alloy compositions for optimal mechanical properties and process adaptability.

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Patent Abstract

Repair of cracks (7) in components (1) using solder (10) is carried out in a process chamber in which the partial pressure of oxygen is below 3.5 x 10 ->6>mbar.