Patent Number: 6,254,930

Title: Coating tube plates and coolant tube

Abstract: Coating for the tube sheets and heat exchanger coolant tubes extending from them, especially steam condensers, based on hardening plastic mixtures, obtainable by cleaning the surfaces provided for coating using an abrasive; closing the tube inlets and outlets (or tube inlets only) with removable plugs; applying at least one layer of a hardening plastic coating on the tube sheet; allowing the coating to harden so that additional mechanical processing can ensue, and processing the surface; removing the plugs from the tube inlets and outlets (or tube inlets only) as well as applying at least one layer of a hardening plastic coating at least in the inlet area of the coolant tube, and allowing it to harden, coating of the coolant tubes by timed applications being done reactively to the tube sheet coating and the coolant tube coating exhibiting in comparison to the tube sheet coating a greater elasticity having an elongation at tear at least 2% greater in accordance with ASTM D522 with respect to the elongation at tear of the tube sheet coating, and process for coating tube sheets and coolant tubes extending from them.

Inventors: Kreiselmaier; Richard (46244, Bottrop, DE)

Assignee:

International Classification: F28F 19/04 (20060101); F28F 19/00 (20060101); B05D 007/22 ()

Expiration Date: 07/03/2018