Abstract
The invention discloses an adjustment method for cooling fans in an overaging (OA) sections of a continuous annealing unit. The method includes the steps that 1, parameters of the continuous annealingfans are collected; 2, V, T10, deltaT, deltaV, i, k and F0 are defined; 3, i=0; 4, V=Vmax - i*deltaV; 5, k=0; 6, the outlet temperature T10 of the OA1 section is set as Tmin + k*deltaT; 7, the fan power P10 of the OA1 section and the fan power P20 of an OA2 section under the outlet temperature T10 are collected; 8, whether the inequation is true or not is judged, if true, the operation is turnedinto the ninth step, otherwise, k=k + 1, and the operation is turned into the sixth step; 9, the actual fan power use coefficients eta1 and eta2 of the OA1 section and the OA2 section under the outlettemperature T10 of the OA1 section are calculated; 10, whether the inequation | eta1-eta2 |p*F0 is true or not is judged, if true, F0=| eta1-eta2 |, T10y=T10, k=k + 1, the operation is turned into the eleventh step, otherwise, k= k + 1, and the the operation is turned into the sixth step; 11, whether the inequation T10 is equal to or less than Tmax is true or not is judged, if true, the operationis turned into the twelfth step, otherwise, i=i + 1, and the operation is turned into the fourth step; 12, whether i is greater than 0 or not is judged, if true, the operation is turned into the fourteenth step, and otherwise the operation is turned into the thirteenth step; 13, the optimal strip steel temperature T10y of an outlet of the OA1 section is output without reducing the speed; and 14,the optimal strip steel temperature T10y of the outlet of the OA1 section is output under the situation that the maximum speed does not exceed V. The problem of uneven power distribution of the cooling fans in the OA sections is solved.
Description
technical field
[0001] The invention relates to the technical field of metallurgical annealing, in particular to an adjustment method for a cooling fan in the overaging section of a continuous annealing unit. Background technique
[0002] The continuous annealing unit has the advantages of high production efficiency, diversified product varieties, high product quality and low production cost, and is widely used in major iron and steel enterprises at home and abroad. The core equipment of the continuous annealing unit is the annealing furnace, and the process sections in the annealing furnace include: preheating section (PHS), heating section (HS), soaking section (SS), slow cooling section (SCS), fast cooling section ( RCS), over-aging section (OAS), final cooling section (FCS). The overaging section of the strip steel in the furnace mainly plays a key role in the internal structure of the strip steel and the performance of the strip steel.
[0003] The over-aging section ...
