Winding tube for exhaust pipes of motor vehicles, has two profiled strips with contact area made of different materials, where material of strips has certain relative sliding friction coefficient

摘要

The winding tube (100) has two profiled strips (110,120) with a contact area made of different materials. The material of the strips has a certain relative sliding friction coefficient, where the strips are made of stainless steel, steel, zinc, zinc phosphate, aluminum, nickel and graphite. The core material of the strips is coated with a layer, particularly physical support layer, chemical diffusion layer or plasma coating. An independent claim is also included for a method for manufacturing winding tube.