What is the maximum temperature below which no bluing is allowed during finish grinding?

The maximum temperature below which no bluing is allowed during finish grinding is set at 600 degrees Fahrenheit. This temperature threshold is crucial in thermite welding and finish grinding because exceeding this limit can alter the properties of the metal being worked on. Bluing occurs when the metal surface temperature rises beyond acceptable levels, leading to changes in hardness, brittleness, and overall durability. Maintaining the temperature below this threshold ensures the integrity of the material is preserved and optimal performance is achieved in the welding process. This is particularly important for ensuring strong welds and maintaining the intended mechanical properties of the base materials.