CONTINUOUS CASTING METHOD FOR STEEL

Title:

CONTINUOUS CASTING METHOD FOR STEEL

Document Type and Number:

WIPO Patent Application WO/2016/121355

Kind Code:

A1

Abstract:

Provided is a continuous casting method for steel that can prevent large fluctuations in solidification completion position from a prescribed target position even when drawing speed (V) is changed. A casting piece is drawn with a speed V0 as the drawing speed V while spraying cooling water on the casting piece for an amount of cooling water spray W0 [kg/ton - casting piece]. Next, the drawing speed V is changed from the speed V0 to a speed V1, and the casting piece is drawn with the speed V1 for the drawing speed V while cooling water is sprayed on the casting piece for a cooling water spray amount W1 [kg/ton - casting piece]. The cooling water spray amount Wt [kg/ton - casting piece], which is the cooling water spray amount W sprayed on the casting piece from a change time Tc for the drawing speed V until time t, which is obtained by dividing a target length Lt by the drawing speed V0, has passed, satisfies Equation (1) or Equation (2) below. At condition V1 < V0, Wt < W1 … (1) At condition V1 > V0, Wt > W1 … (2)

Inventors:

TOISHI KEIGO (JP)
OHNO HIROYUKI (JP)
ARAMAKI NORICHIKA (JP)
MIKI YUJI (JP)

Application Number:

PCT/JP2016/000329

Publication Date:

August 04, 2016

Filing Date:

January 22, 2016

Export Citation:

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Assignee:

JFE STEEL CORP (JP)

International Classes:

B22D11/124; B22D11/20

Foreign References:

JP2013123731A	2013-06-24
JP2010158719A	2010-07-22

Other References: