Production method of anti-aging tinning black plate

A production method and time-resistant technology, applied in the manufacture of converters, etc., can solve the problems of reduced production efficiency and yield, reduced unit production speed, and high production costs, and achieve uniform mechanical properties, less difficulty in production control, and low cost. Effect

Inactive Publication Date: 2010-02-10
WUHAN IRON & STEEL (GROUP) CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The disadvantage of using continuous annealing furnace (CA) to produce soft tinplate: because the original tinplate is very thin, IF steel or low-carbon aluminum-killed steel is soft, coupled with high-temperature annealing, it is prone to hot scoop during continuous annealing of ste

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] A method for producing an aging-resistant tin-plated raw plate, the steps of which are:

[0032] 1) Smelting: KR desulfurization → converter smelting → RH vacuum treatment → continuous casting;

[0033] 2) Hot rolling: its chemical composition (wt%) is C: 0.042, Si: 0.020, Mn: 0.30, P: 0.011, S: 0.014, Als: 0.029, N: 0.0022, and the rest is Fe and unavoidable impurities The continuous casting slab is hot rolled;

[0034] 3) Carry out push-pull pickling; adopt HC rolling mill to carry out cold rolling, under the condition that its reduction rate is controlled as 80%, carry out 3 passes of cold rolling rolling, rolling to 0.28 millimeter thickness; Carry out electrolytic degreasing; Annealing is carried out in a hydrogen bell furnace, the annealing temperature is 500-510°C, and the annealing time is controlled at 16 hours; smoothing is carried out.

[0035] After testing, the hardness value (HR30Tm) of the aging-resistant tin-plated original plate is 54.5, the acid leachi...

Embodiment 2

[0037] A method for producing an aging-resistant tin-plated raw plate, the steps of which are:

[0038] 1) Smelting: KR desulfurization → converter smelting → RH vacuum treatment → continuous casting;

[0039] 2) Hot rolling: its chemical composition (wt%) is C: 0.056, Si: 0.012, Mn: 0.31, P: 0.012, S: 0.019, Als: 0.018, N: 0.0035, and the rest is Fe and unavoidable impurities The continuous casting slab is hot rolled;

[0040] 3) Carry out push-pull pickling; adopt HC rolling mill to carry out cold rolling, under the condition that its reduction rate is controlled as 86%, carry out 4 passes of cold rolling rolling, rolling to 0.22 millimeter thickness; Carry out electrolytic degreasing; Annealing is carried out in a hydrogen bell furnace, the annealing temperature is 550-560°C, and the annealing time is controlled at 13 hours; smoothing is carried out.

[0041] After testing, the hardness value (HR30Tm) of the aging-resistant tin-plated original plate is 55.0, the acid leac...

Embodiment 3

[0043] A method for producing an aging-resistant tin-plated raw plate, the steps of which are:

[0044] 1) Smelting: KR desulfurization → converter smelting → RH vacuum treatment → continuous casting;

[0045] 2) Hot rolling: its chemical composition (wt%) is C: 0.051, Si: 0.013, Mn: 0.29, P: 0.010, S: 0.020, Als: 0.031, N: 0.0025, and the rest is Fe and unavoidable impurities The continuous casting slab is hot rolled;

[0046] 3) Carry out push-pull pickling; adopt HC rolling mill to carry out cold rolling, under the condition that its reduction ratio is controlled as 91%, have carried out 5 passes of cold rolling rolling, rolled to 0.20 millimeter thickness; Carry out electrolytic degreasing; Annealing is carried out in a hydrogen bell furnace, the annealing temperature is 605-620°C, and the annealing time is controlled at 11 hours; smoothing is carried out.

[0047] After testing, the hardness value (HR30Tm) of the aging-resistant tin-plated original plate is 57.5, the ac...

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PUM

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Abstract

The invention relates to a production method of an anti-aging tinning black plate with hardness HR30Tm of 55+/-4 and discloses a production method of an anti-aging tinning black plate. The method comprises the following steps: smelting: adopting KR desulfurization, smelting in a converter, RH vacuum treatment and continuous casting; hot rolling: carrying out the hot rolling of a continuous castingblank comprising the following chemical components in percentage by weight: C: 0.02-0.06, Si: smaller than or equal to 0.025, Mn: smaller than or equal to 0.50, P: smaller than or equal to 0.020, S:smaller than or equal to 0.030, Als: 0.005-0.040, Ti: 0.005-0.020, N: smaller than or equal to 0.005, the balance of Fe and inevitable impurities; and carrying out pickling, cold rolling, electrolyticdegreasing, full-hydrogen bell furnace annealing and leveling of a tinning black plate with hardness HR30Tm of 51-59. The invention has the advantages of small production control difficulty and low cost and hardness value, is beneficial for users to use the anti-aging tinning black plate to manufacture deep drawing cans and can lids with complicated deformation, lessens the canning defects of cracks, crazing slip lines or corded bent surfaces, and the like and improves the canning yield rate and the canning qualified rate.

Description

technical field [0001] The technology relates to a production method of a tin-plated original plate, in particular, it belongs to a production method of an aging-resistant tin-plated original plate whose hardness HR30Tm is within 55±4. Background technique [0002] There are two annealing methods for cold-rolled tin-plated raw plates, namely bell furnace annealing (BA) and continuous annealing (CA). [0003] The annealed steel plate still has some free C and N atoms. If the annealed steel plate is placed at room temperature for a long time, or heated for a short time at a slightly higher temperature, a yield plateau will occur, and the yield point itself will also be lower. This change in performance over time is called aging. When the tinplate with a yield platform is stamped and formed, wrinkles will occur on its surface, which will affect the product quality and even cause the workpiece to be scrapped and the product to be beautiful. Due to the short annealing time and ...

Claims

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Application Information

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IPC IPC(8): C21D8/02C22C38/14C21D1/26C21C1/02C21C5/28C21C7/10C23G1/08
Inventor 白会平涂元强柳长福黄先球郭玉华
Owner WUHAN IRON & STEEL (GROUP) CORP
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