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Ultra-pure tinplate and preparation method thereof

A tinplate, pure technology, applied in the field of iron and steel metallurgy, can solve the problems of improvement, inability to produce second phase, unfavorable mechanical properties of tinplate, etc.

Active Publication Date: 2021-10-01
XI'AN UNIVERSITY OF ARCHITECTURE AND TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing tinplate production process cannot produce the second phase, so that the second phase cannot be strengthened, which is not conducive to the improvement of the mechanical properties of tinplate

Method used

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Examples

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Effect test

preparation example Construction

[0031] In the preparation method of the ultra-pure tinplate of the present invention, the coarse deoxidation of the aluminum ingot is first carried out, and then the deep deoxidation of the aluminum after the titanium is carried out, specifically comprising the following steps:

[0032] (1) End point control of converter tapping

[0033] The tapping temperature of the converter is 1640-1660°C, P≤0.04%, and the amount of slag ≤4.2kg / t steel.

[0034] (2) Initial adjustment of molten steel composition

[0035] When the converter is tapped to 20% of the total volume of the ladle, add aluminum ingots for rough deoxidation, and at the same time add slag washing material for slag washing, and add it when the steel is tapped to 30% of the total volume of the ladle. When tapping reaches 50% of the total volume of the ladle, a binary alloy and a ternary alloy are added to the ladle for alloying. The binary alloy is a silicon-manganese alloy containing 20% ​​to 25% by mass of silicon ...

Embodiment 1

[0042] The preparation method of the present embodiment ultra-pure tinplate comprises the following steps:

[0043] (1) End point control of converter tapping

[0044] The total mass of the converter is 100 tons, the tapping temperature is 1640-1660°C, the mass percentage of P is 0.04%, and the slag amount is 4.2kg / t steel.

[0045] (2) Initial adjustment of molten steel composition

[0046] When the converter is tapped to 20% of the total volume of the ladle, add aluminum ingots for rough deoxidation, and at the same time add slag washing material for slag washing, and add it when the steel is tapped to 30% of the total volume of the ladle. When the steel is tapped to 50% of the total volume of the ladle, silicon-manganese alloy and aluminum-manganese-ferroalloy are added to the steel ladle, wherein, in terms of mass percentages, the silicon-manganese alloy contains 25% by mass of silicon and 75% of manganese by mass; In the ferromanganese alloy, the mass content of aluminu...

Embodiment 2

[0056] The preparation method of the present embodiment ultra-pure tinplate comprises the following steps:

[0057] (1) End point control of converter tapping

[0058] The total mass of the converter is 120 tons, the tapping temperature is 1640-1660°C, the mass percentage of P is 0.03%, and the slag amount is 3.9kg / t steel.

[0059] (2) Initial adjustment of molten steel composition

[0060] When the converter is tapped to 20% of the total volume of the ladle, add aluminum ingots for rough deoxidation, and at the same time add slag washing material for slag washing, and add it when the steel is tapped to 30% of the total volume of the ladle. When the steel is tapped to 50% of the total volume of the ladle, silicon-manganese alloy and aluminum-manganese-ferroalloy are added to the steel ladle, wherein, in terms of mass percentages, the silicon-manganese alloy contains 22% by mass and 78% by mass of manganese; In the ferromanganese alloy, the mass content of aluminum, manganes...

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Abstract

The invention discloses an ultra-pure tinplate and a preparation method thereof. The preparation method comprises the following steps that in the tinplate smelting process, after initial adjustment of molten steel components is completed, fine adjustment is conducted on the molten steel components, and after fine adjustment is completed, continuous casting and rolling are conducted, and casting is conducted to form a casting blank or continuous casting is conducted to form a continuous casting blank; and when the molten steel components are finely adjusted, the temperature of molten steel is adjusted to 1,580-1,600 DEG C, then a titanium-containing deoxidizer is added into the molten steel, and after the reaction is conducted for 2-3 min, an aluminum wire is fed for deoxidation. According to the preparation method, the cleanliness of the molten steel can be improved, precipitation of a second phase can be promoted, the quality of the tinplate is improved, and finally the ultra-pure tinplate with excellent performance is obtained.

Description

technical field [0001] The invention belongs to the technical field of iron and steel metallurgy, and in particular relates to an ultra-pure tinplate and a preparation method thereof. Background technique [0002] Tinplate has the characteristics of high strength, corrosion resistance, good ductility, and non-toxicity. It is mainly used in the manufacture of food cans, spray cans, bottles, and carbonated beverage cans. Tinplate cans have obvious advantages in economic benefits, and the global market demand is gradually increasing. Therefore, considering the long-term demand, there is an urgent need to produce a large amount of high-quality tinplate. [0003] Due to the thin thickness of packaging materials such as food cans, it is required that the tinplate cans must ensure normal performance and at the same time reduce the thickness to a minimum. Performance puts forward higher requirements. The stamping performance of tinplate is mainly affected by the purity of the ste...

Claims

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Application Information

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IPC IPC(8): C22C33/06C21C7/06C21C7/00C21C7/076C22C38/02C22C38/04C22C38/14C22C38/06B21B1/22B21B1/46
CPCC22C33/06C21C7/06C21C7/0056C21C7/0006C21C7/076C22C38/02C22C38/04C22C38/002C22C38/14C22C38/06C22C38/001B21B1/22B21B1/463B21B2001/225Y02P10/20
Inventor 邱国兴李小明韦旭立贺芸白冲李林波
Owner XI'AN UNIVERSITY OF ARCHITECTURE AND TECHNOLOGY
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