Repairs of large-size castings
As part of our project “3RE: Innovative Service for Repairing Damaged Large-Size Magnesium Alloy Castings,” we have introduced a method for their repair using the innovative Cold Spray technology. The service is aimed at foundries and various entities that service machines or structures built using cast components damaged due to environmental impacts (e.g. corrosion, erosion, abrasion, cracking and others).
ThreeRe Company
Launches an innovative service for repairing damaged magnesium alloy castings based on the Originators’ proprietary know-how using Cold Spray technology. The service has application potential and significant competitive advantages compared to current industry methods of repairing magnesium alloy castings based on TIG welding.
The main problem is that TIG welding is a high-temperature process, which negatively affects the workpiece, primarily by degrading its microstructure and introducing thermal stresses, resulting in changes in its dimensions and properties and ultimately derailing its ultimate application.
The limitations of the TIG method are practically eliminated when using the innovative solution proposed by ThreeRe. The relatively low temperature of the repair process, achieved through the use of technological parameters appropriately developed by the Originators, limits the negative impact of the temperature of the repair process on the geometry and dimensions of the component and will not be the cause of unfavourable physical phenomena thermally induced in the repaired material.
This translates directly into greater efficiency in repairing damaged large-size magnesium castings using Cold Spray technology.
Benefits of using Cold Spray technology
Performed repair of magnesium alloy components:
- does not generate changes in the geometry of the repaired component, even with thin sections reducing waste;
- does not change the microstructure at the site of repair; therefore, after the repair process, no additional heat treatment is required, generating an increase in repair costs and time;
- does not cause thermal stress in the repaired part, causing less waste generated during the repair process;
- does not cause oxidation of the repaired surface, so no additional machining is required.
