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Super deep-draw fingerprint resistant electro-galvanized plate and manufacturing method thereof

A technology of electro-galvanized sheet and manufacturing method, applied in the field of steel manufacturing, can solve the problems of poor welding performance, difficult technical requirements for home appliance panels, difficult to popularize and apply, etc., and achieve the effect of excellent corrosion resistance.

Inactive Publication Date: 2015-08-26
武钢集团有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this product is a hot-dip galvanized product, and its welding performance is worse than that of an electro-galvanized product. It is difficult to use this kind of hot-dip galvanized product to meet the technical requirements of home appliance panels, and its market competitiveness is low, so it is difficult to popularize and apply

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] An ultra-deep drawing anti-fingerprint electrogalvanized sheet, its chemical composition is calculated by weight percentage: C: 0.0020, Si: 0.008, Mn: 0.12, P: 0.012, S: 0.008, sol.Al: 0.05, N: 0.0023 , Ti: 0.070, the rest is Fe and unavoidable impurities.

[0025] Its manufacturing method includes the following steps: using molten iron to make steel→vacuum treatment→continuous casting→hot rolling→pickling→cold rolling→continuous annealing→pass finishing→drawing and leveling→electrogalvanizing→fingerprint resistance, wherein, smelting and pouring into a slab After rolling, the hot rolling heating temperature is 1200°C, the final rolling temperature is 1000°C, and the crimping temperature is 750°C. After hot continuous rolling, 5 passes of cold rolling are carried out. The cold rolling reduction rate is controlled at 73%, and the continuous annealing temperature is The temperature is 860°C, the continuous annealing time is 80s, the skin elongation is 0.7%, the surface ro...

Embodiment 2

[0028] An ultra-deep drawing anti-fingerprint electrogalvanized sheet, the chemical composition of which is calculated by weight percentage: C: 0.0016, Si: 0.008, Mn: 0.10, P: 0.010, S: 0.007, sol.Al: 0.05, N: 0.0030 , Ti: 0.075, the rest is Fe and unavoidable impurities.

[0029]Its manufacturing method adopts molten iron steelmaking→vacuum treatment→continuous casting→hot rolling→pickling→cold rolling→continuous annealing→pass skinning→tension straightening→electrogalvanizing→fingerprint resistance, among which, rolling is carried out after smelting and pouring into slabs , the hot rolling heating temperature is 1000°C, the final rolling temperature is 800°C, and the crimping temperature is 620°C. After hot continuous rolling, 5 passes of cold rolling are carried out. The cold rolling reduction rate is controlled at 83%, and the continuous annealing temperature is 850°C. The continuous annealing time is 60s, the skin elongation is 0.7%, the surface roughness is 1.2μm, and th...

Embodiment 3

[0032] An ultra-deep drawing and anti-fingerprint electrogalvanized sheet, the chemical composition of which is calculated by weight percentage: C: 0.0018, Si: 0.007, Mn: 0.08, P: 0.009, S: 0.009, sol.Al: 0.04, N: 0.0028 , Ti: 0.080, the rest is Fe and unavoidable impurities.

[0033] Its manufacturing method includes the following steps: using molten iron to make steel→vacuum treatment→continuous casting→hot rolling→pickling→cold rolling→continuous annealing→pass finishing→drawing and straightening→electrogalvanizing→fingerprint resistance, wherein, smelting and casting into plates Rolling after billet, hot rolling heating temperature 1100°C, finishing rolling temperature 900°C, crimping temperature 700°C, 5 passes of cold rolling after hot rolling, cold rolling reduction rate controlled at 80%, continuous annealing The temperature is 840°C, the continuous annealing time is 70s, the skin elongation is 0.6%, the surface roughness is 1.0μm, and the PC value is 90 pieces / cm.

...

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PUM

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Abstract

The invention discloses a super deep-draw fingerprint resistant electro-galvanized plate and a manufacturing method thereof. The super deep-draw fingerprint resistant electro-galvanized plate comprises the following chemical components in percentage by weight: less than or equal to 0.002 percent of C, less than or equal to 0.01 percent of Si, 0.06-0.12 percent of Mn, less than or equal to 0.012 percent of P, less than or equal to 0.009 percent of S, 0.065-0.085 percent of Ti, 0.02-0.05 percent of sol Al, less than or equal to 0.003 percent of N, and the balance of Fe and inevitable impurities. The manufacturing method comprises the steps of molten iron desulphurization, smelting in a converter, vacuum treatment, continuous casting, hot rolling, cold rolling, continuous annealing and reeling, wherein the heating temperature of the hot rolling is 1,000-1,200 DEG C, the temperature of the final rolling is 800-1,000 DEG C, five times of cold rolling is conducted after the continuous hot rolling, the reduction rate of the cold rolling is controlled to be 73-83%, the temperature of continuous annealing is 810-860 DEG C, the time of the continuous annealing is 15-80 s, and then the electrogalvanizing and fingerprint resisting treatment is conducted after leveling and withdrawal straightening. The electro-galvanized plate has excellent stamping processing and fingerprint resisting performance, and the manufacturing method of steel is simple in process flow and low in production cost.

Description

technical field [0001] The invention belongs to the technical field of steel manufacture, and specifically refers to an ultra-deep drawing anti-fingerprint electrogalvanized sheet and a manufacturing method thereof. Background technique [0002] my country's electro-galvanized sheet is mainly used in high-end home appliances and automobiles, but some high-end varieties of electro-galvanized still need to be imported in large quantities, including fingerprint-resistant electro-galvanized steel products used for large-scale stamping to manufacture LCD backplanes and OA appliances. The product requires not only excellent stamping performance, but also excellent surface quality and anti-fingerprint coating performance. For most of the electro-galvanized steel sheet production lines in China, this requirement is very strict, and it is difficult to meet the requirements of the home appliance and automobile industries, so the industry uses a large number of imported Japanese and Ko...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C38/14C21D8/04
Inventor 黄道兵蔡捷涂元强董蓓杜蓉冯冠文白会平宋乙峰雷泽红杨宏武
Owner 武钢集团有限公司
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