Flame arrester arrangement and method of incorporating bore in a flame arrester arrangement
In a flame arrester arrangement which is formed from two metal strips ( 8, 9 ) which are wound together to form a disk having an approximately circular outer circumference and of which a first metal strip ( 8 ) is a smooth strip and the second metal strip ( 9 ) is a corrugated strip having defined corrugation, the two strips ( 8, 9 ), by bearing against one another, forming defined gaps ( 11 ) for passage of a fluid and being held in position, relative to one another by fixing pins inserted into radial bores ( 6 ), the radial bores ( 6 ) can be incorporated without deforming the gaps ( 11 ) even in the region of the bores ( 6 ) by virtue of the fact that the bores ( 6 ) are incorporated by spark erosion without deforming the corrugation formed in the second metal strip, such that the gaps ( 11 ) are also present in the region of the bores ( 6 ) in the manner defined by the corrugation.
1. A method of manufacturing a flame arrester arrangement, comprising:
winding together two metal strips to form a disk having an approximately circular outer circumference wherein a first metal strip of said two metal strips is a smooth strip and a second metal strip of said two metal strips is a corrugated strip having defined corrugation, the two strips, by bearing against one another, form defined gaps for passage of a fluid;
closing off axially the defined gaps on both sides of said disk using retaining plates;
forming one or more bores radially inward from an outer circumference of said disk by a spark erosion electrode while injecting a cooling liquid; and
securing one or more fixing pins in said one or more bores.