Method for producing a flat steel product with high reflection capacity, flat steel product, and mirror element for solar concentrators

摘要

The method involves providing a steel flat product with an upper surface of an arithmetical middle rough value smaller than a micro meter. The resulted steel product is annealed under an inert gas atmosphere with hydrogen content of more than 50 volume percent. A dry performance-forming re-rolling of the annealed steel flat product is dry performance-forming re-rolled with post-rolling degree of 0.5 to 2 percentages. A coating of the flat steel product is selectively determined at a terminal in re-rolled condition with a reflective coating. Independent claims are also included for the following: (1) a steel flat product (2) a mirror element for a solar concentrator.