Heat Treatment Method of Blade Material to Remove Delta Ferrite

摘要

The present invention relates to a method of heat-treating a high-chromium robust turbine blade material, the delta ferrite through heat treatment by removing , in the turbine blade is that the purpose is to provide a heat treatment method for producing a characteristic to have a suitable high- chrome steel . ; turbine blades for the invention for achieving the object as described above a method for the heat treatment of the material , and the chromium equivalent at least 10 wt% chromium 9 to 12 further comprising a primary heat treatment in order to adjust the hardenability Steel grain size , inverse transformation temperature (AC ₃ ) to immediately above a step of cooling , the austenite single-phase only , including the step of quenching the second heat treatment to a temperature range in which there is the technical feature configured .