Production method for a tubular fuel cell having a two-layer cap region of the support body

Abstract

The invention relates to a method for producing a tubular fuel cell by means of a pulling-core tool (11), wherein the pulling-core tool (11) comprises at least one tool part (12a, 12b) that forms a cavity and a pulling core (13) that can be positioned in at least two positions (A, B) in the cavity, wherein a hollow space (14, 14a) can be formed between the pulling core (13) and the at least one cavity-forming tool part (12a, 12b), which hollow space substantially corresponds to the shape of a tubular body to be formed, said tubular body being closed at one end by a cap section, wherein the pulling-core tool (11) has at least one sprue channel (15) that opens into the hollow-space region (14a) having the shape of the cap section. The method comprises the following method steps: a) injecting a first injection-molding component (1) for forming a ceramic and/or vitreous material into the pulling-core tool (11) through the sprue channel (15), wherein the pulling core (13) is positioned in a first position (A); b) positioning the pulling core (13) in a second position (B), in which the pulling core (13) is further from the sprue channel (15) than in the first position (A); and c) injecting a second injection-molding component (2) different from the first for forming a ceramic and/or vitreous material into the pulling-core tool (11) through the sprue channel (15). The invention further relates to a tubular fuel cell, to a fuel cell system, to a pulling-core tool, and to a combined heat and power plant equipped therewith or to a vehicle equipped therewith.

Dependencies are inferred from the claim text.