Hot rolling high-pressure fluid rust removing method and device

Abstract

The invention relates to a hot rolling high-pressure fluid rust removing method and device. The hot rolling high-pressure fluid rust removing device comprises at least one rust removing unit, wherein the length direction of a main spraying pipe of the rust removing unit is crossed with the billet transmission direction of a billet, the main spraying pipe is used for providing fluid, a plurality of nozzles of the rust removing unit are arranged in the main spraying pipe, each nozzle jets fluid to the surface of the billet to form impact regions in a direction opposite to the billet transmission direction, adjacent impact regions are actually in parallel and are staggered on the surface of the billet, center lines in length directions of the adjacent impact regions space intervals between the impact regions, and are actually vertical to the billet transmission direction. Therefore, the interference caused by rebounding the fluid by adjacent nozzles during curtain spraying can be reduced, therefore, the rust removing quality can be improved, the defect of reducing rust on the surface of a billet is reduced, and the surface quality of the billet is improved.

Description

Technical field [0001] The invention relates to a rust removal method and device, in particular to a hot rolling high-pressure fluid rust removal method and device, which can be applied to the hot rolling process of steel strip, steel plate, section steel, bar steel, wire and the like. Background technique [0002] Generally, the surface scale of the well-known hot-rolled steel billet must be removed before rolling in order to prevent the scale from being rolled in and causing surface defects of the product (such as steel strip, steel plate, etc.). Therefore, the high-pressure fluid rust removal device is usually installed in Before the mill. [0003] Figure 1a shows the simulation schematic diagram of the impact area formed by the nozzle spray curtain of the known high-pressure fluid descaling device on the surface of the billet; Figure 1b shows the schematic diagram of the rust removal nozzle arrangement of the known high-pressure fluid descaling device; Figure 1c shows the well-...

AI Technical Summary

Problems solved by technology

[0009] The existence of the blank area (G) and the weakened area (W) shows that the design of the known high-pressure fluid derusting nozzle 11 geometric positions has the problem of uneven derusting ability, which is the main reason for rolling into the scale. However, in the known technology, this kind of problem is often considered to be caused by the arrangement design of the nozzles 11 or / and improper manufacturing and installation of the derusting device, so that the impact areas 14 and 15 do not overlap or overlap insufficiently.

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