EP 4253586 A1 20231004 - PREPARATION METHOD FOR LOW-TEMPERATURE IMPACT TOUGHNESS-RESISTANT WIND POWER STEEL
Title (en)
PREPARATION METHOD FOR LOW-TEMPERATURE IMPACT TOUGHNESS-RESISTANT WIND POWER STEEL
Title (de)
HERSTELLUNGSVERFAHREN FÜR NIEDRIGTEMPERATUR-SCHLAGZÄHIGKEITSBESTÄNDIGEN WINDKRAFTSTAHL
Title (fr)
PROCÉDÉ DE PRÉPARATION D'ACIER D'ÉNERGIE ÉOLIENNE RÉSISTANT AUX CHOCS À BASSE TEMPÉRATURE
Publication
Application
Priority
- CN 202011334962 A 20201124
- CN 2021118336 W 20210914
Abstract (en)
The present disclosure provides a preparation method for toughness wind power steel with low-temperature impact resistance, comprising the following steps of: pretreating, a desulfurization of molten steel; smelting: pretreated molten steel; refining, being divided into LF refining and RH refining; continuous casting, being adopted whole-process protection casting; and rolling, being adopted two-stage rolling comprising rough rolling and finish rolling. In the preparation method for the toughness wind power steel with low-temperature impact resistance disclosed in the present disclosure, it provides a normalizing-rolled toughness wind power steel with low-temperature impact resistance plate with low cost, excellent low-temperature impact toughness, and good comprehensive performance such as product strength, percentage elongation after fracture, and cold bending performance and the like; and by adding and controlling various alloy elements, and directly using the normalizing rolling process, the production cost is low, the production cycle is short, and the normalizing rolling low-temperature impact toughness wind power steel plate with a thickness of 6mm to 63mm can be produced to obtain the toughness wind power steel with low-temperature impact resistance.
IPC 8 full level
C22C 33/04 (2006.01); B22D 11/18 (2006.01); C21C 1/02 (2006.01); C21C 5/28 (2006.01); C21C 7/06 (2006.01); C21C 7/072 (2006.01); C21C 7/10 (2006.01); C21D 1/28 (2006.01); C21D 8/02 (2006.01); C22C 38/02 (2006.01); C22C 38/04 (2006.01); C22C 38/06 (2006.01); C22C 38/12 (2006.01); C22C 38/14 (2006.01)
CPC (source: EP)
B22D 11/001 (2013.01); B22D 11/1206 (2013.01); B22D 11/18 (2013.01); C21C 1/02 (2013.01); C21C 7/0006 (2013.01); C21C 7/0056 (2013.01); C21C 7/06 (2013.01); C21C 7/072 (2013.01); C21C 7/10 (2013.01); C21D 8/0226 (2013.01); C21D 9/46 (2013.01); C22C 33/04 (2013.01); C22C 38/02 (2013.01); C22C 38/04 (2013.01); C22C 38/06 (2013.01); C22C 38/12 (2013.01); C22C 38/14 (2013.01)
Citation (search report)
See references of WO 2022110982A1
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated extension state (EPC)
BA ME
Designated validation state (EPC)
KH MA MD TN
DOCDB simple family (publication)
EP 4253586 A1 20231004; CN 112662933 A 20210416; WO 2022110982 A1 20220602
DOCDB simple family (application)
EP 21896486 A 20210914; CN 202011334962 A 20201124; CN 2021118336 W 20210914