Low hydrogen annealing is a heat treatment in metallurgy for the reduction or elimination of hydrogen in a material to prevent hydrogen embrittlement.
Process description
The material is kept in an hydrogen annealing oven over several hours at temperatures between 200 °C and 300 °C. The enclosed hydrogen atoms, known for hydrogen embrittlement are removed by effusion. The method is predominantly used immediately after welding, coating process or galvanizing of the parts.
References
Low hydrogen annealing Wikipedia(Text) CC BY-SA