| 摘要 |
A coating for tube bases (1) and cooling tubes (2) running therefrom in heat exchangers, especially steam condensers, on the basis of curable plastic mixtures obtainable by cleaning the surfaces to be coated with an abrasive material, sealing the tube inlets and outlets with removable plugs, applying at least one coating (6) of a hardenable plastic compound to the tube base (1), letting the coating (6) harden to permit further mechanical machining and machining the surface, removing the plugs from the tube inlets and outlets and applying at least one coating of a hardenable plastic compound at least in the inlet region of the coolant tube (2) and allowing it to harden. The coating (7) of the coolant tube (2) is reactivity bonded to the basic tube coating and realized by timed applications. The coating on the coolant tubes has a greater elasticity with an elongation at tear greater than 2 percent in relation to that of the tube base coating to DIN 53152. The invention also relates to a process for coating tube bases (1) and coolant tubes (2) emerging therefrom.
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