MANUFACTURING METHOD OF PLATE STRIPS FOR MAIN PIPES ON REVERSING MILL Russian patent published in 2013 - IPC C21D8/02 

FIELD: metallurgy.

SUBSTANCE: manufacturing method of plate strips for main pipes on a reversing mill involves calculation of length of one-sided end process crops, which is equal to cold zone on the plate end depending on thickness and width of a plate based on the following ratio: Δ=(A₁×h²-A₂×h+A₃)×(A₄/S)^1/2±200 mm; where Δ - length of end process crops on one side of a plate, mm; h - plate thickness, mm; S - plate width, mm A₁=0.024 mm^-1; A₂=70.918; A₃=1909.3 mm, A₄=3500 mm - empiric coefficients for plate strips, which are determined by experiment.

EFFECT: possibility of optimising length of end process crops of plate strips for each item of the size range of main pipes and preserving consistent quality of plate strips.

1 ex