Particle with fabricated housing

Particle separator (1) for treating exhaust gases of an internal combustion engine (2), wherein at least one through-flow of exhaust gas metallic layer (3) in a housing (4) having an inlet opening (5), an outlet opening (6) and a center axis (7) arranged , where (10) and a second part (9) having a second joining surface (11), the housing (4) having a first portion (8) having a first joining surface with the first joining surface (10) and the second joining surface (11 ) correspond to each other, so that the first part (8) and the second part (9) along the central axis (7) are positioned to each other and the at least one metallic layer (3), the first joining surface (10) and the second joining surface (11) fully spaced. It is proposed for the production thereof, a particle separator and a method which can be manufactured inexpensively with few resources in a simple manner and in particular for retrofitting to an existing exhaust system suitable.