Heat zincplating planisher roll shape curve design method

A technology of curve design and flattening machine, applied in the direction of rolls, metal processing equipment, metal rolling, etc., can solve problems such as insufficient shape quality

Active Publication Date: 2007-03-07
BAOSHAN IRON & STEEL CO LTD +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

But for the hot-dip galvanizing leveling unit, according to its characteristics, it is not enough to only consider the quality of the plate shape of the product, and must also consider the stability of the zinc layer during the leveling process, the uniformity of spangles, and the avoidance of surface color difference.

Method used

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  • Heat zincplating planisher roll shape curve design method
  • Heat zincplating planisher roll shape curve design method
  • Heat zincplating planisher roll shape curve design method

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Embodiment Construction

[0096] The design process and calculation results of adopting the method of the present invention to optimize a certain skin pass roll profile curve are given below:

[0097] (1) Raw data related to equipment and product outline required for calculation:

[0098] Equipment parameters of temper mill: work roll body length L w =1500mm, working roll diameter D w =φ480 / 520mm, back-up roll body length L b =1450mm, back-up roll diameter D b =φ1150 / 1250mm, the center distance between the driving side of the back-up roller and the pressing screw on the working side l 1 =2.67m, positive and negative bending rolls of working rolls, center distance between drive side and working side bending roll hydraulic cylinder l 2 =2.47m. Maximum roll bending force ±60t, maximum rolling pressure 700t, maximum rolling speed 180m / min, wet leveling.

[0099] Product variety specification range: strip width 800~1250mm, thickness 0.20~1.3mm, yield strength σ s 280 ~ 620Mpa, flat elongation 0.5 ~ 1...

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Abstract

The invention relates to thermal zinc plating finisher curvature design method, which comprises a, collecting device parameter of finisher, and kind standards; b, selecting right standard, to fix the weight factor of each standard; c, designing the roller curvature formula and optimizing the curvature parameters; d, adding said parameter into roller curvature formula to obtain optimized formula. The invention uses pre-discharge tension stress and rolling pressure transverse distribution uniformity as target function, to optimize the working roller and support roller curvatures, to support the stability and uniformity of zinc layer.

Description

technical field [0001] The invention relates to a rolling technology of a hot-dip galvanized steel sheet, in particular to a method for designing a roll profile curve of a hot-dip galvanized tempering machine. Background technique [0002] The existing roll shape design technology of the temper mill generally only considers that the pre-tension stress of the strip is evenly distributed in the transverse direction, that is, the shape of the exit plate is good. But for the hot-dip galvanizing leveling unit, according to its characteristics, it is not enough to only consider the quality of the plate shape of the product, and must also consider the stability of the zinc layer during the leveling process, the uniformity of spangles, and the avoidance of surface color difference. . Contents of the invention [0003] The purpose of the present invention is to provide a method for designing the roll profile curve of a hot-dip galvanizing leveler, so that the leveler can not only ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21B27/02
Inventor 顾廷权白振华赵宇声连家创黄自友
Owner BAOSHAN IRON & STEEL CO LTD
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