Low-carbon cold-rolled precision ultrathin steel strip for toy industry, and process method and application thereof

A low-carbon steel and steel strip technology, applied in metal rolling, manufacturing tools, metal rolling, etc., can solve the problems of easy falling off and difficult to color, etc.

Active Publication Date: 2012-09-12
YONGXIN PRECISION MATERIAL WUXI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The product thickness and flatness of this process meet the current needs, but there are also problems such as smooth surface, difficult to color, and easy to fall off after surface printing

Method used

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  • Low-carbon cold-rolled precision ultrathin steel strip for toy industry, and process method and application thereof
  • Low-carbon cold-rolled precision ultrathin steel strip for toy industry, and process method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0069] In this embodiment, the selected brand is SPHC hot-rolled low-carbon steel raw material coil, which has a thickness of 3.0 mm and a width of 1245 mm. The thickness of the finished low carbon steel cold-rolled steel strip is 0.06mm±0.005, and the width is Vickers hardness HV≥170.

[0070] (1) Firstly, choose SPHC hot-rolled low-carbon steel raw material coil as raw material, its chemical composition: carbon (C) 0.04%, silicon (Si) 0.020%, manganese (Mn) 0.18%, phosphorus (P) 0.016%, Sulfur (S) 0.010%, its thickness is 3.0mm thick, width 455mm wide (1245mm wide slit).

[0071] (2) Peel and pickle the hot-rolled low-carbon steel raw material coils with a thickness of 3.0mm, clean, passivate and dry them. Three-trough shallow tank immersion pickling process is adopted, the pickling agent is hydrochloric acid, and it is divided into three tanks, and the concentration of the acid solution is 5%, 10%, 18%, and the pickling temperature is prepared according to the principle ...

Embodiment 2

[0085] In this embodiment, the selected grade is SPHC hot-rolled low-carbon steel raw material coil, which has a thickness of 2.75mm and a width of 1245mm. The finished low carbon steel cold rolled steel strip has a thickness of 0.06±0.005mm and a width of Vickers hardness HV≥170.

[0086] (1) Firstly, choose SPHC hot-rolled low-carbon steel raw material coil as raw material, its chemical composition: carbon (C) 0.04%, silicon (Si) 0.020%, manganese (Mn) 0.18%, phosphorus (P) 0.016%, Sulfur (S) 0.010%, its thickness is 2.75mm thick and 455mm wide (1245mm wide slit).

[0087] (2) The hot-rolled low-carbon steel raw material coils with a thickness of 2.75mm are peeled and pickled, cleaned, passivated and dried. Three-trough shallow tank immersion pickling process is adopted. The pickling agent is hydrochloric acid. It is divided into three tanks. The concentration of the acid solution is 12%, 15% and 18%, and the pickling temperature is in order. It is 75°C, 78°C, and 80°C. ...

Embodiment 3

[0101] In this embodiment, the selected brand is SPHC hot-rolled low-carbon steel raw material coil, which has a thickness of 1.0 mm and a width of 1245 mm. The finished low carbon steel cold rolled steel strip has a thickness of 0.03±0.005mm and a width of Vickers hardness HV≥170.

[0102] (1) Firstly, choose SPHC hot-rolled low-carbon steel raw material coil as raw material, its chemical composition: carbon (C) 0.04%, silicon (Si) 0.020%, manganese (Mn) 0.18%, phosphorus (P) 0.016%, Sulfur (S) 0.010%, its thickness is 1.0mm thick, width 455mm wide (1245mm wide slit).

[0103] (2) The hot-rolled low-carbon steel raw material coils with a thickness of 1.0mm are peeled and pickled, cleaned, passivated and dried. The two-trough shallow tank immersion pickling process is adopted. The pickling agent is hydrochloric acid. It is divided into two tanks. The concentration of the acid solution is 15%, 20% and the pickling temperature is 40°C in order to increase according to the run...

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Abstract

The invention relates to a production process for a low-carbon cold-rolled precision ultrathin steel strip. The production process comprises pretreatment, heat treatment, finish rolling, tension leveling, and longitudinal shear and slitting to obtain a finished product. The low-carbon cold-rolled precision ultrathin steel strip produced by the process has certain roughness, and a printed layer or a protective layer on the surface of the steel strip is firm and does not fall off; the strip is high in flatness and easy to form; and the steel strip has the thickness of less than 0.08mm and even less than 0.06mm, and can be used for producing carbon steel products required to be coated with pigments or protective layers.

Description

technical field [0001] The invention relates to the field of low-carbon steel cold-rolled steel strips, in particular, the invention relates to a low-carbon steel precision cold-rolled ultra-thin steel strip, its production process and its application. Background technique [0002] In the production process of many industries, a steel strip that is extremely thin and has a certain roughness and is not easy to fall off after dyeing is required. For example, the low-carbon cold-rolled steel strips currently used in the domestic toy industry are ordinary surface, thicker than 0.10mm thick, and the plate shape belongs to ordinary-grade steel strips. They are usually rolled by rolling mills with six rolls or above, and the two-roll tempering machine is improved. Plate-shaped process production. With the continuous development of the toy industry, it has become intelligent, automated, miniaturized and colorful, and the traditional low-carbon steel cold-rolled steel strip can no l...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21B1/40B21B45/02B21B15/00
Inventor 濮晓芳
Owner YONGXIN PRECISION MATERIAL WUXI
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