Patent ID: 8732950

Claim:
A method for a production of a heat exchanger for an inline measuring device including at least one measuring tube, which is insertable into a course of a process line serving to convey a process fluid to be measured, the heat exchanger includes: two heat exchanger sheets, of which an, inner, first heat exchanger sheet is suited for contacting the inline measuring device externally during operation at least sectionally flushly in a predeterminable contact area and, thus, to form an inner wall of the heat exchanger, and of which an outer, second heat exchanger sheet attached to the first heat exchanger sheet forms an outer wall of the heat exchanger, wherein: said two heat exchanger sheets are connected together via an edge connection seam running along an edge region, as well as via a plurality of inner connection locations arranged spaced from one another in an inner region at least partially surrounded by said edge connection seam, such that, enclosed by said at least two heat exchanger sheets, at least one chamber is formed exhibiting a plurality of sections communicating with one another, and said chamber is incorporatable, via first and second openings arranged in one of said at least two heat exchanger sheets and opening into such chamber, into a temperature-control piping system conveying a temperature-control fluid serving for the transport of heat, said method comprises the steps of: producing, said first opening provided for the connecting of the heat exchanger to the temperature control piping system in a first sheet part serving for the production of one of the heat exchanger sheets; laying the first sheet part on a second sheet part serving likewise for the production of one of the heat exchanger sheets; producing the edge connection seam and the inner connection locations by welding of the two superimposed sheet parts; introducing, through the first opening, fluid into a chamber remaining between the two sheet parts connected with one another; superimposing on the fluid filled in the chamber a static pressure, which exceeds a static pressure of a surrounding atmosphere to such a degree that an expansion of the chamber is initiated; and plastically deforming material principally of the thinner of the two sheet parts, by expanding the chamber by means of the fluid with the superimposed pressure.