Manufacturing method of high-temperature bolts for steam turbines

The invention discloses a manufacturing method of high-temperature bolts for steam turbines, belongs to the technical field of heat treatment processes of metal materials, and provides the manufacturing method of the high-temperature bolts for the steam turbines, which can effectively control the internal quality and the mechanical performance of the bolts. In the high-temperature bolts for the steam turbines produced by the method, through a specific heat treatment process, the heat treatment effect of the metal materials for specific material components is guaranteed, so that the surface andinternal quality of obtained products is excellent, no defect is generated, the hardenability is proper, microscopic structures are uniform tempered martensite, and higher yield strength, high-temperature endurance strength, toughness and oxidation corrosion resistance are achieved to meet the operation requirements of the high-temperature bolts for the steam turbines. 本发明公开了一种汽轮机用高温螺栓的制造方法，属于金属材料的热处理工艺技术领域，提供一种能够有效地控制螺栓