METHOD FOR CONTINUOUS MANUFACTURE OF A STEEL BAND

专利名称：METHOD FOR CONTINUOUS

MANUFACTURE OF A STEEL BAND FORDRAWING WITH IMPROVED SURFACEPROPERTIES

发明人：WILLEM, JEAN-FRANCOIS,CRAHAY,

JEAN,LEROY, VINCENT

申请号：EP98916676.4申请日：19980428公开号：EP0985054A1公开日：20000315

摘要：The manufacturing method of a continuous steel strip for deep drawing havingimproved surface properties, wherein a strip which has undergone hot rolling withwinding end of rolling at a temperature between 500 and 800 degrees C, as well as a coldrolling with a reduction rate of at least 30% and preferably 75%, undergoes a heatingstep, and then a heat treatment called annealing following reagent, for performing theone hand recrystallization c that is to say, the regeneration of the crystal lattice followingthe deformation, and the other of the strip carburization at a temperature T, both ofwhich may be simultaneous or not depending on the final properties of the referredband, and finally said strip being subjected to cooling, is that the reactive annealing inquestion is carried out completely or partially in a gaseous atmosphere comprising atleast CO and H2 in volume concentrations satisfying the following relationship: (% H2flight ) + 2 (% vol CO] -80> 0, at least one of H20 and CO2 concentrations below or to 3%by volume, balance an inert gas such as N2 ...

申请人：CENTRE DE RECHERCHES METALLURGIQUES - CENTRUM VOOR DE RESEARCHIN DE METALLURGIE

地址：47, rue Montoyer 1000 Bruxelles BE

国籍：BE

代理机构：Van Malderen, Michel

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