METHOD OF HOT ROLLING ON CONTINUOUS WIDE-STRIP HOT MILL Russian patent published in 2009 - IPC B21B1/26 

FIELD: metallurgy.

SUBSTANCE: method includes rolling with specified temperatures and cobbing values. Improvement of steel mechanical properties, particularly weldability of received from it in the sequel cold-rolled strips, is provided ensured by rolling of pipe manganese steel, containing 0.19…0.22 wt % carbon and 0.02…0.05 wt % aluminium, for finite thickness 3.0 mm rolling temperature in sixth mill stand is accepted equal to 1020…1100°C, finishing temperature - 820…860°C and strips winding temperature - 540…580°C, herewith value of total percent reduction in roughing stand is accepted ε_Σ=87…89% with increasing of percent reduction ε_i in each following stand, and in finishing train ε_Σ=89…91% with reduction 6; slong the rolling strike, beginning from the third finishing train, 1.06…1.41 times in each following passage.

EFFECT: increasing of consumer properties of sheet pipe wide strip steel during hot rolling.

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