GH4169 Bar production process

GH4169 Bar production process

The workpiece must be surface cleaned before and during heating to keep the surface clean. If the heating environment contains sulfur, phosphorus, lead or other low melting point metals, the GH4169 alloy will become brittle. Impurities are derived from painted paint, chalk, lubricating oil, water, fuel, and the like. The sulfur content of the fuel should be low. For example, the impurity content of liquefied gas and natural gas should be less than 0.1%, the sulfur content of city gas should be lower than 0.25g/m3, and the sulfur content of petroleum gas should be less than 0.5%.
The heated electric furnace is preferably provided with a relatively precise temperature control capability, and the furnace gas must be neutral or weakly alkaline, and the composition of the furnace gas should be prevented from fluctuating in oxidizing and reducing properties.
GH4169 hot working

The suitable hot working temperature of GH4169 alloy is 1120-900 °C. The cooling method can be water quenching or other rapid cooling method. After hot working, it should be annealed in time to ensure the best performance. The material should be heated to the upper limit of the processing temperature during hot working. In order to ensure the plasticity during processing, the final processing temperature should not be lower than 960 °C when the deformation amount reaches 20%.
GH4169 cold working

Cold working should be carried out after solution treatment. GH4169 has a higher work hardening rate than austenitic stainless steel. Therefore, the processing equipment should be adjusted accordingly, and there should be an intermediate annealing process during cold working.