| 摘要 |
<p>PROBLEM TO BE SOLVED: To reduce unsteady parts before and behind a weld zone while preventing flaws of the rolls of a temper rolling mill caused by the weld zone without providing special equipment in a welding device. SOLUTION: In a manufacturing method of a metallic strip by continuous heat treatment, the load on the temper rolling mill at the time of passing the weld zone of the metallic strip through the temper rolling mill is defined as not lower than a prescribed lower limit value and as not higher than the undermentioned upper limit value P(t,Δt) which is expressed by thickness (t) of the metallic strip preceding to the weld zone and thickness differenceΔt of the metallic strip before and behind this weld zone. P(t,Δt)=f(t)+g.Δt/t... (1), f(t)=at<2> +bt+ct... (2), in the equation, a, b, c are predetermined coefficients.</p> |
