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Polishing apparatus, polishing method, and method for manufacturing roll to be immersed in molten metal plating bath

A technology of grinding processing and hot-dip plating, which is applied in the field of grinding processing devices and can solve problems such as the reduction of surface characteristics of electroplated steel sheets

Active Publication Date: 2017-02-15
NIPPON STEEL CORP
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

The ratio of dross in the plating solution can be controlled to a certain extent by the Al concentration in the solution, but the generation of dross in the plating solution cannot be avoided essentially.
[0004] When the above-mentioned dross adheres to the surface of the steel strip passing through the plating solution, it causes a decrease in the surface properties of the plated steel sheet (dross defect)

Method used

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  • Polishing apparatus, polishing method, and method for manufacturing roll to be immersed in molten metal plating bath
  • Polishing apparatus, polishing method, and method for manufacturing roll to be immersed in molten metal plating bath
  • Polishing apparatus, polishing method, and method for manufacturing roll to be immersed in molten metal plating bath

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Embodiment Construction

[0149] The inventors of the present invention conducted intensive research and found that if a linear grinding tool is used to grind the grooves on the peripheral surface of the roll, then the non-contact area with the groove bottom as the center can be locally ground, which can properly In order to accurately adjust the surface roughness of the non-contact region, the following embodiments are conceived.

[0150] Hereinafter, preferred embodiments will be described in detail with reference to the drawings. In addition, in this specification and drawings, the same code|symbol is attached|subjected to the component which has substantially the same functional structure, and repeated description is abbreviate|omitted.

[0151] [1. Configuration of continuous hot-dip coating equipment]

[0152] First, refer to figure 1 The overall structure of the continuous hot-dipping apparatus provided with the roll in the hot-dipping bath of 1st Embodiment is demonstrated. figure 1 It is a ...

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Abstract

A polishing apparatus for a roll, which is to be immersed in a molten metal plating bath, on which multiple grooves are formed on the circumferential surface of the roll, and which is to be used when bringing a metal band in contact with the circumferential surface of the roll in molten metal in a plating bath while continuously supplying a metal into the molten metal in the plating bath to plate the metal band. The polishing apparatus is provided with a loading means for loading a polishing means for selectively and mechanically polishing at least a portion of a non-contacting region, which does not contact the metal band and is closer to the bottom of the groove than the contacting region of the circumferential surface of the roll that contacts the metal band in the molten metal in the plating bath.

Description

technical field [0001] The present invention relates to a grinding processing device, a grinding processing method and a manufacturing method of a roll in a hot-dipping bath. Background technique [0002] Continuous hot-dipping equipment is a device for electroplating metal strips (such as steel strips) with molten metal such as zinc. This continuous hot-dipping apparatus is equipped with, for example, a sinker roll (also referred to as a pot roll) for switching the traveling direction of the steel strip as a roll in the hot-dip coating solution filled with molten metal, and A pair of backup rolls for correcting the shape of the steel strip. The steel strip introduced obliquely downward into the bath is pulled up out of the bath by passing between a pair of back-up rolls after the sinking roll changes its traveling direction to vertically upward. Thereafter, excess molten metal adhering to the surface of the steel strip is wiped off by gas jetted from the wiping nozzle, an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B24B19/02B24B5/37B24B21/16
CPCB24B5/37B24B19/02B24B21/16
Inventor 水野显栗栖泰
Owner NIPPON STEEL CORP
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