ApplicationsHeat Welded Magnesium Turbine
Application:
An aircraft turbine rebuilder heating magnesium turbine housings prior to welding.
Problem:
- Temperature Requirement - The area to be repaired had to be preheated to 200F (93C) before welding could be completed.
- Compound Damage - The turbine housing was typically damaged in one or more areas (usually cracks).
- Wasted Resources - Existing heating method required that the complete turbine housing be reheated in a convection oven before each weld, wasting energy and operator time.
Solution:
- Heat - A Model 4185 Infrared Strip Heater mounted on an articulating arm was used to apply heat to the turbine housings after they were preheated once in the convection oven.
- Power Control - A Model 665F Phase Angle SCR Power Controller controlled the power to the Infrared Strip Heater using a thermocouple feedback to a single-loop process controller.
Benefits:
- Temperatures Maintained -By using the Model 4185 Infrared Strip Heater to apply heat to the turbine housing after preheating, the rebuilder was able to maintain temperatures on the housing following a single preheat in the existing convection oven.
- Recovered Resources - By maintaining the temperatures on the housing following a single preheat in the existing convection oven, the rebuilder lowered energy consumption and increased operator productivity.