Method for manufacturing hot galvanized plate with high-conductivity surface

A technology of hot-dip galvanized sheet and manufacturing method, which is applied in the direction of hot-dip galvanizing process, coating, metal material coating process, etc., can solve the problems of high surface non-conductivity, high surface resistance, and small surplus space, and achieve Effect of improving surface quality, low resistance, and high conductivity

Active Publication Date: 2014-11-19
MAGANG (GROUP) HOLDING CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Various coated galvanized products currently produced, after 16 points/side, double-sided 32-point detection, the surface conductivity cannot fully meet the requirements
On the one hand, the overall surface conductivity is poor, the surface resistance is high, and the...

Method used

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Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment

[0022] Specific embodiment: surface roughness peak value RPc ( / cm) influences on surface conductivity, and surface resistance and surface non-conductivity rate are to adopt general-purpose detection equipment in this embodiment, to galvanized sheet positive and negative two sides 32 points detections obtain . In the embodiment, two aspects are mainly implemented: the control of the surface roughness and peak value of the substrate, and the control of the film weight and uniformity of the surface coating.

[0023] Substrate surface roughness Ra: 1.0μm, peak RPc( / cm): 75, coating film weight 1.1g / m 2 , The surface resistance is 0.052mΩ, and the non-conduction rate is 0%.

[0024] Substrate surface roughness Ra: 1.0μm, peak value RPc( / cm): 90, coating film weight 1.1g / m 2 , The surface resistance is 0.040mΩ, and the non-conduction rate is 0%.

[0025] Substrate surface roughness Ra: 1.0μm, peak value RPc( / cm): 115, coating film weight 1.1g / m 2 , The surface resistance is 0.02...

Embodiment 2

[0026] Embodiment 2: Effect of coating film weight and uniformity on surface conductivity.

[0027] Substrate surface roughness Ra: 1.0μm, peak value RPc( / cm): 90, coating film weight 1.1g / m 2 , The surface resistance is 0.040mΩ, and the non-conduction rate is 0%.

[0028] Substrate surface roughness Ra: 1.0μm, peak value RPc( / cm): 90, coating film weight 1.3g / m 2 , The surface resistance is 0.052mΩ, and the non-conduction rate is 50%.

[0029] Substrate surface roughness Ra: 1.0μm, peak value RPc( / cm): 90, coating film weight 1.45g / m 2 , The surface resistance is 0.058mΩ, and the non-conduction rate is 80%.

[0030] After the verification of the above examples, the surface roughness of the galvanized sheet is controlled at 2.0-2.5 μm, and the film weight of the surface coating is controlled at 1.1g / m 2 , the surface resistance value of the hot-dip galvanized sheet manufactured by the manufacturing method of the hot-dip galvanized sheet is less than 0.2MΩ, and the surface ...

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Abstract

The invention discloses a method for manufacturing a hot galvanized plate with a high-conductivity surface. The method comprises the following procedures of performing degreasing cleaning on the surface; performing continuous annealing of an annealing furnace; putting the plate into a zinc pot and performing hot-dipping galvanization on the plate; performing finishing, and drawing and straightening, and performing surface coating treatment. In the finishing, and drawing and straightening procedure, a working roller of a finishing machine works under the capacitance mode to perform roughening, and the roller face roughness of the working roller is controlled between 2.0 micrometers and 2.5 micrometers. According to the method for manufacturing the hot galvanized plate with the high-conductivity surface, a galvanized steel strip is treated, the surface treatment process of the galvanized plate is improved, and therefore the hot galvanized plate with the extremely-low surface resistance, high conductivity and extremely-low non-conduction rate is obtained. Data safety of a data warehouse can be ensured, and the use requirement of a customer is met.

Description

technical field [0001] The invention relates to the field of hot-dip galvanized sheet manufacturing, in particular to a method for manufacturing a hot-dip galvanized sheet with high surface conductivity. Background technique [0002] Hot-dip galvanized sheets with high surface conductivity are generally used in the manufacture of data warehouse equipment for "big data" storage, which is very important for data security. All kinds of coated galvanized products currently produced, after 16 points per side, 32 points on both sides, the surface conductivity cannot fully meet the requirements. On the one hand, the overall surface conductivity is poor, the surface resistance is high, and the surface non-conductivity rate is high, which cannot meet the user's requirements; on the other hand, the overall surface conductivity meets the user's requirements but is close to the upper limit. If the weight is uneven, it may exceed the upper limit and cannot meet the user's requirements. ...

Claims

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Application Information

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IPC IPC(8): C23C2/06C23C2/26
Inventor 刘茂林赵云龙严开龙陈德春王卫远章一樊
Owner MAGANG (GROUP) HOLDING CO LTD
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