Abstract: Method for producing coated assembly parts for chemical device elements including the following steps: (a) the formation of an initial assembly including a steel support part, a zirconium or zirconium alloy coating, and at least one brazing material between the support part and the coating; (b) the insertion of the initial assembly into a brazing chamber with a controlled atmosphere; (c) the formation of a controlled atmosphere in said chamber; and (d) the reheating of said assembly to a temperature at least equal to the melting temperature of said brazing material.

Abstract: Method for producing coated assembly parts for chemical device elements including the following series of steps: (a) the formation of an initial assembly including a steel support part, typically a plate, a zirconium or zirconium alloy coating, typically a sheet having dimensions similar to those of the steel plate, and at least one brazing material between the support part and the coating, wherein said brazing material is an alloy including silver and copper; (b) the insertion of the initial assembly into a brazing chamber with a controlled atmosphere; (c) the formation of a controlled atmosphere in said chamber; (d) the reheating of said assembly to a temperature at least equal to the melting temperature of said brazing material; wherein, prior to the formation of said initial assembly, the deposition of a titanium or titanium alloy layer on said zirconium (or zirconium alloy) coating is performed, and in that said coating is placed so that its titanium- or (titanium alloy-) coated surface is in contact w

Abstract: The vessel of the invention includes a side wall and an end wall, and is characterized in that the end wall is a domed end wall, of thickness EI including an inner layer CI providing corrosion resistance and an outer layer CE of thickness EE at least equal to the thickness EI of the inner layer CI. The inner and outer layers are rigidly joined by a first assembly device. Inner layer CI is formed from a multilayer material including an internal layer CI for providing corrosion resistance and an external layer CIS, the internal CIC and the external CIS layers being rigidly joined by a second assembly device. The invention enables inexpensive manufacture of large vessels.

Abstract: Method for producing coated assembly parts for chemical device elements including the following series of steps: (a) the formation of an initial assembly including a steel support part, typically a plate, a zirconium or zirconium alloy coating, typically a sheet having dimensions similar to those of the steel plate, and at least one brazing material between the support part and the coating, wherein said brazing material is an alloy including silver and copper; (b) the insertion of the initial assembly into a brazing chamber with a controlled atmosphere; (c) the formation of a controlled atmosphere in said chamber; (d) the reheating of said assembly to a temperature at least equal to the melting temperature of said brazing material; wherein, prior to the formation of said initial assembly, the deposition of a titanium or titanium alloy layer on said zirconium (or zirconium alloy) coating is performed, and in that said coating is placed so that its titanium- or (titanium alloy-) coated surface is in contact w