A kind of strip steel surface treatment method

A technology for surface treatment and strip steel, applied in the field of steel rolling, can solve the problems of difficulty in controlling the thickness of the pre-oxidized layer of high-strength steel and a large number of other problems, and achieve the effects of controllable degree of oxidation of the plate surface, cost reduction and simple control method.

Active Publication Date: 2018-09-25
CISDI ENG CO LTD
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Problems solved by technology

[0005] In view of the above-mentioned shortcomings of the prior art, the purpose of the present invention is to provide a strip surface treatment method and system for solving the problem of using a large amount of lye and high-strength steel in the prior art for strip surface treatment. The thickness of the pre-oxidized layer is difficult to control, etc.

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  • A kind of strip steel surface treatment method
  • A kind of strip steel surface treatment method

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Embodiment Construction

[0070] Embodiments of the present invention are described below through specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific implementation modes, and various modifications or changes can be made to the details in this specification based on different viewpoints and applications without departing from the spirit of the present invention.

[0071] A strip surface treatment method, comprising the steps of:

[0072] 1) The high-temperature gas is sprayed onto the surface of the steel strip in the incinerator after pressurization. The high-temperature gas is mainly the combustion waste gas of the annealing furnace. Since the temperature of the waste gas is different in each time period, in order to reduce the temperature of the gas in the furnace, it can also be injected int...

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Abstract

The invention provides a surface treatment method and system for strip steel. The method comprises at least comprises the following steps of: 1) pressurizing high-temperature gas and spraying the pressurized high-temperature gas to the surface of strip steel in an incinerator; 3) brushing the surface of the strip steel for a first time; and 3) brushing the surface of the strip steel for a second time. The surface treatment method provided by the invention effectively removes adhesive substances such as rolling oil and iron powder on the surface of the strip steel, and sufficiently utilizes heat of combustion waste gas of the incinerator, so that a great deal of alkali liquor is not used, and therefore, the surface treatment method is energy-saving and environmentally friendly, and is low in production cost.

Description

technical field [0001] The invention relates to the technical field of steel rolling, in particular to a strip surface cleaning and high-strength steel galvanized strip surface pre-oxidation control method and application of a strip post-treatment continuous production line, and in particular to a strip surface treatment method. Background technique [0002] There are a lot of residues on the surface of cold-rolled strip steel, mainly iron powder and rolling oil, and the total amount is generally as high as 300mg / m 2 ~600mg / m 2 (one-sided). The galvanizing and continuous annealing units of the post-cold rolling treatment line are equipped with cleaning sections to remove these dirt on the surface of the strip. The sludge and iron powder that will remain on the surface of poorly cleaned raw materials will seriously affect the platability of the galvanized sheet and the surface quality of the continuously stripped sheet. [0003] The cleaning process of the traditional clea...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B21B45/02
CPCB21B45/004B21B45/0275B21B45/0278B21B45/0287
Inventor 刘迁夏强强
Owner CISDI ENG CO LTD
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