Selective oxidation control method for hot galvanizing dual-phase steel
The invention discloses a selective oxidation control method for hot galvanizing dual-phase steel and belongs to the technical field of cold rolling. The selective oxidation control method for the hot galvanizing dual-phase steel comprises the following steps that at least three injecting points are...
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Main Authors | , , , , , , , , , , , , , |
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Format | Patent |
Language | Chinese English |
Published |
13.06.2017
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Subjects | |
Online Access | Get full text |
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Summary: | The invention discloses a selective oxidation control method for hot galvanizing dual-phase steel and belongs to the technical field of cold rolling. The selective oxidation control method for the hot galvanizing dual-phase steel comprises the following steps that at least three injecting points are formed in an injecting pipe, injected into the heating section of an annealing furnace, of a humidifier; one end of a nitrogen outlet pipe communicates with the injecting pipe, and a leading in point is arranged on the other end of the nitrogen outlet pipe; the nitrogen leading in point is connected to a high-pressure point, and nitrogen drives vapor of the humidifier to enter the heating section of the annealing furnace through the injecting point; and the hydrogen content of the heating section of the annealing furnace is reduced. According to the selective oxidation control method for the hot galvanizing dual-phase steel, the heating section of the annealing furnace reaches a higher dew point, external oxidatio |
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Bibliography: | Application Number: CN2017115571 |