ROLLING METHOD FOR BOARDS WITH DIFFERENT LONGITUDINAL THICKNESSES

Title:

ROLLING METHOD FOR BOARDS WITH DIFFERENT LONGITUDINAL THICKNESSES

Document Type and Number:

WIPO Patent Application WO/2016/155603

Kind Code:

A1

Abstract:

Disclosed is a rolling method for boards with different longitudinal thicknesses, which comprises the following steps: 1) setting the number N of segments with uniform thickness of a sample, the thicknesses h1, h2,..., hN of all the segments with uniform thickness, the lengths L1, L2,..., LN of all the segments with uniform thickness, and the transition segment lengths T1, T2,...,TN-1 between each segment with uniform thickness, the N segments with uniform thickness having N-1 transition segments, and the units of the thicknesses and the lengths being both mm; 2) selecting raw materials; 3) setting the rolling force, a roll seam and the rolling time for each segment; 4) preparing rolling; 5) conducting rolling; 6) optimizing rolling parameters, measuring the thicknesses and the lengths of all the segments with uniform thickness and the lengths of the transition segments of a rolled rolling piece, comparing the measured thicknesses of all the segments with uniform thickness to set thicknesses of the sample, and then correcting the rolling force Pi and the roll seam Gi of each segment set in step 3); comparing the measured lengths to a marked position in step 4), and then correcting the rolling time of each segment set in step 3); repeating step 4) and step 5) with raw materials of the same size and conducting correction again. A rolling piece meeting the requirements of the sample can be rolled through trial-rolling 2 or 3 times. In the present method, there is no need to prepare rolls of raw materials or to research a complex control method for roll thickening rolling, which saves raw materials and saves debugging time.

Inventors:

ZHANG CHUNWEI (CN)
LI SHANQING (CN)
JIANG ZHENGLIAN (CN)
XIONG FEI (CN)

Application Number:

PCT/CN2016/077628

Publication Date:

October 06, 2016

Filing Date:

March 29, 2016

Export Citation:

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Assignee:

BAOSHAN IRON & STEEL (CN)

International Classes:

B21B1/30; B21B37/26

Domestic Patent References:

WO2014067037A1

2014-05-08

Foreign References:

CN104741377A	2015-07-01
CN104338748A	2015-02-11
CN103926834A	2014-07-16
JPS6033809A	1985-02-21

Other References: