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Y and Sr-containing iron alloy for hot-dip galvanized high-thermal-conductivity iron crucible

A hot-dip galvanizing, high thermal conductivity technology, applied in the field of alloys, can solve the problems affecting the cost and quality of galvanizing, affecting the anti-corrosion effect of galvanizing quality, and uneven thickness of galvanizing in iron pots, so as to achieve dense and excellent welds. Weldability, improved corrosion and leakage effects

Inactive Publication Date: 2018-09-28
GUANGZHOU YUZHI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These temperature differences or the existence of temperature gradients will lead to uneven galvanizing thickness in the iron pot, which seriously affects the quality of galvanizing and the subsequent anti-corrosion effect
The life and heat transfer performance of the zinc pot directly or indirectly affect the cost and quality of galvanizing. Once it is severely corroded and leads to zinc leakage, the consequences will be even more serious
Replacing the zinc crucible is a difficult task as it causes the shutdown of the entire production line and the discharge of molten zinc metal

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] An iron alloy containing Y and Sr for hot-dip galvanized iron pan with high thermal conductivity at 360-450 degrees. In terms of weight percentage, the chemical composition of the alloy is: Ca: 0.2wt.%, Sr: 0.2wt.%, Re: 0.4wt.%, Y: 0.2wt.%, V: 0.8wt.%, Hf: 0.4wt .%, the balance is iron. Alloy preparation method: Add the above-mentioned raw materials into an argon-protected induction furnace, and use a silicon carbide crucible; induction heating to 1500-1600 degrees to form an alloy solution, and use the electromagnetic stirring effect to fully stir for about 10 minutes; The alloy liquid is kept at 1500-1600 degrees for 10 minutes and then cast into the required round ingot. The obtained ingot is hot-rolled at 800 degrees, and the rolling reduction in each pass is 10-15%. After every two hot rollings, the intermediate annealing temperature is 900 degrees, and the temperature is kept for 1 hour. Finally, the material is rolled into a steel plate with a thickness of 40-...

Embodiment 2

[0020] An iron alloy containing Y and Sr for hot-dip galvanized iron pan with high thermal conductivity at 360-450 degrees. In terms of weight percentage, the chemical composition of the alloy is: Ca: 0.4wt.%, Sr: 0.3wt.%, Re: 0.6wt.%, Y: 0.4wt.%, V: 1.5wt.%, Hf: 0.5wt .%, the balance is iron. Alloy preparation method: Add the above-mentioned raw materials into an argon-protected induction furnace, and use a silicon carbide crucible; induction heating to 1500-1600 degrees to form an alloy solution, and use the electromagnetic stirring effect to fully stir for about 10 minutes; The alloy liquid is kept at 1500-1600 degrees for 10 minutes and then cast into the required round ingot. The obtained ingot is hot-rolled at 800 degrees, and the rolling reduction in each pass is 10-15%. After every two hot rollings, the intermediate annealing temperature is 900 degrees, and the temperature is kept for 1 hour. Finally, the material is rolled into a steel plate with a thickness of 40-...

Embodiment 3

[0023] An iron alloy containing Y and Sr for hot-dip galvanized iron pan with high thermal conductivity at 360-450 degrees. In terms of weight percentage, the chemical composition of the alloy is: Ca: 0.3wt.%, Sr: 0.2wt.%, Re: 0.5wt.%, Y: 0.3wt.%, V: 0.9wt.%, Hf: 0.4wt .%, the balance is iron. Alloy preparation method: Add the above-mentioned raw materials into an argon-protected induction furnace, and use a silicon carbide crucible; induction heating to 1500-1600 degrees to form an alloy solution, and use the electromagnetic stirring effect to fully stir for about 10 minutes; The alloy liquid is kept at 1500-1600 degrees for 10 minutes and then cast into the required round ingot. The obtained ingot is hot-rolled at 800 degrees, and the rolling reduction in each pass is 10-15%. After every two hot rollings, the intermediate annealing temperature is 900 degrees, and the temperature is kept for 1 hour. Finally, the material is rolled into a steel plate with a thickness of 40-...

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Abstract

The invention discloses a Y and Sr-containing iron alloy for a hot-dip galvanized high-thermal-conductivity iron crucible and a processing technology thereof. The alloy comprises 0.2-0.4 wt.% of Ca,0.2-0.3 wt.% of Sr, 0.4-0.6 wt.% of Re, 0.2-0.4 wt.% of Y, 0.8-1.5 wt.% of V, 0.4-0.5 wt.% of Hf and the balance iron. According to the alloy and the processing technology thereof, the alloy is cast and hot-rolled into a steel plate to form the hot-dip galvanized iron crucibl so that the heat transfer capability of the iron crucible and the uniformity of the thickness of a galvanized layer can begreatly improved; and the service life of the iron crucible is prolonged from 7-10 years to 20 years and longer, and the effects of improving the production efficiency and saving the cost are achieved.

Description

technical field [0001] The invention relates to the technical field of alloys, in particular to an iron alloy. Background technique [0002] Hot-dip galvanizing is also called hot-dip galvanizing and hot-dip galvanizing. It is an effective metal anti-corrosion method, mainly used in metal structure facilities in various industries. It is to immerse the rust-removed steel parts in the molten zinc at about 445 ° C, so that the surface of the steel parts will be attached with a zinc layer, so as to achieve the purpose of anti-corrosion. Hot-dip galvanizing is developed from the older hot-dip galvanizing method. Since 1836, when hot-dip galvanizing was applied to industry in France, it has a history of 140 years. [0003] In simple terms, the process of hot-dip galvanizing is: pickling of finished products - water washing - adding auxiliary plating solution - drying - rack plating - cooling - chemical treatment - cleaning - polishing - finishing. Hot-dip galvanizing has a ser...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C38/12C22C33/04C21D8/02C23C2/06
CPCC22C38/002C21D8/0205C21D8/0226C21D8/0263C22C33/04C22C38/005C22C38/12C23C2/003C23C2/06
Inventor 杨长江
Owner GUANGZHOU YUZHI TECH CO LTD
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