Method for manufacturing waveform holder

Provided is a method for manufacturing a wave-shaped holder (7) provided with a pair of annular members (8) and a plurality of fastening members (rivets (9)) for joining the pair of annular members (8) in a state in which the pair of annular members (8) overlap in the axial direction. The method includes a heat treatment step in which a heat treatment is performed on an unquenched annular member (8) comprising a press-molded article of a steel plate. In the heat treatment step, a primary heat treatment for tufftriding the unquenched annular member (8) at a temperature of 400 DEG C to 590 DEG C and a secondary heat treatment for holding the tufftrided annular member (8) at a temperature of 180 DEG C to 200 DEG C are performed. 本发明提供一种波形保持器的制造方法，其是用于制造波形保持器(7)的方法，所述波形保持器(7)具备一对环状构件(8)以及将一对环状构件(8)以在轴向上重叠的状态结合的多个紧固构件(铆钉(9))，所述方法包括对由钢板的冲压成形品构成的未淬火的环状构件(8)实施热处理的热处理工序。在该热处理工序中，执行在400℃～590℃的温度下对未淬火的环状构件(8)实施软氮化处理的一次热处理、以及将实施了软氮化处理的环状构件(8)在180℃～200℃的温度下保持的二次热处理。