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A method of using a hot-dip galvanized sheet slag removal roll

A technology of hot-dip galvanized sheet and slag coil, which is applied in the direction of hot-dip galvanizing process, coating, metal material coating process, etc., and can solve the problem of reducing production efficiency, reducing economic benefits, and adverse effects of continuous production of hot-dip galvanizing production lines, etc. problem, achieve the effect of improving production efficiency and reducing slag roll

Active Publication Date: 2020-05-15
SHOUGANG JINGTANG IRON & STEEL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The invention provides a method for using slag coils for hot-dip galvanized sheets, which is used to solve the problem of reducing economic benefits and production efficiency due to the production of slag coils in the prior art, which has adverse effects on the continuous production of hot-dip galvanizing production lines technical problems, to achieve the technical effect of reducing the slag rolls produced during the production process and improving the production efficiency of high-surface-grade hot-dip galvanized sheets

Method used

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  • A method of using a hot-dip galvanized sheet slag removal roll

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Embodiment 1

[0024] figure 1 It is a schematic flowchart of a method for using a hot-dip galvanized sheet slag removal roll in an embodiment of the present invention. Such as figure 1 As shown, the method includes:

[0025] Step 1: Divide the original large roll for slag removal into three small rolls, wherein two of the three small rolls are used for slag removal. One-third of the time stop slag removal.

[0026] Further, the weight of the original large roll of slag roll is 25-34 tons.

[0027] Specifically, the said original large coil slag coil refers to that in the prior art, when steel mills produce FC surface-grade strip steel and FD surface-grade strip steel, they need to invest in a large coil slag at a certain production interval. The slag roll is used to remove the slag. Moreover, the length of the original large roll with slag removal is 2500-3500 meters, and the weight of the roll is 25-34 tons. Therefore, the original large roll with slag removal is divided into three sm...

Embodiment 2

[0038] A method for using a hot-dip galvanized sheet slag removal roll of the present invention is described in detail below, specifically as follows:

[0039] In the embodiment of the present invention, a method of using hot-dip galvanized sheet slag rolls is provided. First, 5 rolls of the original FC surface level and FD surface level hot-dip galvanized automobile sheets are selected to count the surface slag rolls. Defect distribution, if the zinc slag defect level on the surface of the strip can reach the FD standard, it means that the slag removal is complete. When the length of the slag removal roll reaches 50%, the slag removal is more thorough. The original large slag removal roll is divided into three small rolls. Two of the three small rolls are used for slag removal, and the slag removal is stopped when the remaining third of the second small roll is left; then, when the FC surface level hot-dip galvanized with a thickness ≥ 1.2mm When the automobile sheet is used ...

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Abstract

The invention discloses a production method for hot galvanized plate slag salvaging rolls, and relates to the technical field of hot galvanizing. The method comprises the following steps that 1, an original large slag salvaging roll is divided into three small rolls, two of the three small rolls are used for slag salvaging, and slag salvaging is stopped after the first roll body completes the slagsalvaging operation and the second roll body has one third of the slag salvaging operation to finish; 2, when FC surface grade hot galvanized plates with the thickness greater than or equal to 1.2mmare produced in a concentrated mode, no slag salvaging roll is independently arranged for the part of strip steel; and 3, when FB hot galvanized plates meeting the preset conditions can be used for the slag salvaging rolls, the FB hot galvanized plates are used for the high-surface-grade hot galvanized plate slag salvaging rolls, wherein the high-surface-grade hot galvanized plates are hot galvanized plates which are higher than the FB surface grade. The method has the advantages that the technical problems that in the prior art, the economic benefits are reduced, and the production efficiencyis reduced due to the fact that the slag salvaging rolls are generated can be solved, and the technical effects of reducing the slag salvaging rolls output in the production process and improving theproduction efficiency of the high-surface-grade hot galvanized plates can be achieved.

Description

technical field [0001] The invention relates to the technical field of hot-dip galvanizing, in particular to a method for using a hot-dip galvanized sheet scavenger roll. Background technique [0002] At present, the conventional production method of high-surface-grade hot-dip galvanized automotive sheets in domestic steel mills requires a large coil to be used for slag removal at a certain production interval for FC surface-grade strip steel and FD surface-grade strip steel, and the length of the coil is 2500-3500 meters, the coil weight is 25-34 tons, due to the limited level of zinc dross control, dross coils are sold as low surface grade spot products, but this production method, resulting in dross coils downgrades economic benefits, and the demand for dross coils reduces production efficiency , has a negative impact on the continuous production of the hot-dip galvanizing production line, which in turn affects the production level and production efficiency of FC and FD s...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23C2/06C23C2/40
CPCC23C2/06C23C2/40
Inventor 李润昌齐达胡鑫韩志刚郑艳坤
Owner SHOUGANG JINGTANG IRON & STEEL CO LTD
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