Method for manufacturing exhaust component

A method for manufacturing an automotive exhaust component, the method comprising:

• arranging first and second members so as to be located on both sides of a flow path member, the first and second members each having a plate shape and being included in an insulator that surrounds the flow path member, the flow path member extending along an axial line and being provided with a path for exhaust gas therein;
• and
• joining the first and second members,
• wherein the first member includes:
• a first main body that is arranged to face an outer-circumferential surface of the flow path member;
• a first joining portion having a flange shape that is provided at an end of the first main body in a circumferential direction about the axial line;
• and
• a first positioner provided to the first joining portion,
• wherein the second member includes:
• a second main body that is arranged to face the outer-circumferential surface of the flow path member;
• a second joining portion having a flange shape that is provided at an end of the second main body in the circumferential direction;
• and
• two second positioners that are provided to the second joining portion and aligned in a direction of the axial line,
• wherein, once the first and second members are in position, the first joining portion faces the second joining portion, and the first positioner is situated between the two second positioners,
• wherein the first and second joining portions are swaged with each other, and the first and second members are thus joined, and
• wherein the two second positioners are provided at an end of the second joining portion opposite to the second main body, and each has a plate shape protruding toward the first joining portion.