Process arrangement method for mixed jet cleaning

Abstract

The invention relates to a process arrangement method for mixed jet cleaning. The method employs high-pressure mixed jet descaling units having a plurality of abrasive materials with different granularities. The high-pressure mixed jet descaling units are arranged along a tape transport direction of a metal plate. The high-pressure mixed jet with large granularity abrasive materials is arranged at an original inlet area of the metal plate, with the granularity of 20 meshes-60 meshes and inject pressure of 15 MPa-80 MPa; the high-pressure mixed jet with medium granularity abrasive materials is arranged at downstream of the high-pressure mixed jet descaling unit with the large granularity abrasive materials, with the granularity of 40 meshes-80 meshes and inject pressure of 10 MPa-60 MPa; the high-pressure mixed jet descaling unit with small granularity abrasive materials is arranged at downstream of the high-pressure mixed jet descaling unit with the medium granularity abrasive materials, with the granularity of 60 meshes-120 meshes and inject pressure of 10 MPa-50 MPa; the metal plate realizes the front and back descaling of the metal plate via the above jet descaling units; and the washing of the metal plate is finished by passing the descaled metal plate through a high-pressure pure water cleaning unit, a wiping unit and a compressed air blowing unit. The complete removing treatment of the scales on two sides of the coal metal plate is realized via a jet way.

Description

technical field [0001] The invention belongs to the technical field of continuous jet descaling of cold metal strips, and in particular relates to a process layout method for mixed jet cleaning, which is mainly used to realize continuous jet descaling of the front and back sides of cold metal strips, with different The area is sprayed with abrasives of different particle sizes to ensure that the front and back of the metal strip after jet descaling are free of scales, and the removal efficiency is high enough. At the same time, the roughness of the front and back is guaranteed to be searchable, and at the same time, it is always dry and clean. The next step of the process. Background technique [0002] During the hot rolling or heat treatment process of metal materials, a dense covering composed of metal oxides will be formed on the surface, commonly known as "scale". The existence of this scale will affect further processing: on the one hand, the material The cracks on the...

AI Technical Summary

Problems solved by technology

[0005] 1. There is a lot of liquid residue on the surface, such as water

[0006] 2. There may be hard particles remaining on the surface, such as the abrasive of the mixed jet embedded in the surface, etc.

However, this method also has the above problems. Not only can it not solve the problem of descaling speed, but also the stability of the treatment is not high, and it is easy to cause some surfaces to be not cleaned.

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