Nova Patents
NO20034401L

Process for producing AlMn strip or sheet

Abstract

The invention relates to a method for the manufacture of a part of the method for AlMn tape or sheet by the brazing layer. Based on the method of the invention, the added raw material by melting system, comprising (according to wt.%) Si: 0.3-1.2%, Fe: ≤0.5%, Cu: ≤0.1%, Mn: 1.0-1.8%, Mg: ≤0.3%, Cr+Zr: 0.05-0.4%, Zn: ≤0.1%, Ti: ≤0.1%, Sn: ≤0.15%, and inevitable associated mineral, wherein at least one of equal to 0.05% maximum, a total content maximum is 0.15%, and rest is composed of the aluminium. The raw material is lower than 520℃ pre-heating temperature, preheating to the time or the combination of 12 hours. A hot rolling of of the raw material is pre-heating the hot rolling belt, and final rolling temperature is at least 250℃, comprising a cold rolling belt the hot rolling belt cold rolling, wherein of the intermediate annealing. Method of the invention is about economically the top of the material layer of the brazing layer, and high yield and point excellent corrosion of aluminium plate.

Term

No projected expiry on record.

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1 claim: 1 independent, 0 dependent

  1. 1
    hot rolling end temperature of at least 250 ° C, and the hot-rolled strip cold-rolled to a cold-rolled strip without intermediate annealing. The method makes it possible to economically produce aluminum styrene sheets which, even after soldering, have a high level of firmness, especially a high yield strength and excellent corrosion resistance. varmvalsesluttemperatur på minst 250°C, og det varmvalsede båndet kaldvalses til et kaldvalset bånd uten mellomliggende gløding. Fremgangsmåten gjør det mulig å økonomisk fremstille aluminiumstyrinplater som, selv etter lodding, har et høyt nivå av fasthet, spesielt en høy flytegrense og en utmerket bestandighet mot korrosjon.