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Device for hot-dip coating Al-Zn (aluminum-zincic) on super high-strength band steel and processing technology

A technology of hot-dip aluminum and strip steel, applied in hot-dip plating process, metal material coating process, coating and other directions, can solve problems such as reducing product strength, and achieve the effect of improving product quality, ensuring strength, and increasing profits

Inactive Publication Date: 2009-09-16
BAOSHAN IRON & STEEL CO LTD
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  • Abstract
  • Description
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Problems solved by technology

However, after phase transformation strengthening and then heating for hot-dip galvanizing, the strength of the product will be reduced, which is a contradiction

Method used

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  • Device for hot-dip coating Al-Zn (aluminum-zincic) on super high-strength band steel and processing technology
  • Device for hot-dip coating Al-Zn (aluminum-zincic) on super high-strength band steel and processing technology

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Embodiment Construction

[0018] Such as figure 2 As shown, it includes uncoiler 1, pickling equipment 2, front looper 3, annealing furnace 4, furnace nose 5, aluminum zinc pot 6, lower sealing device 7, rapid cooling device 8, discharge device 9, cooling bellows 10, over Aging furnace 11, water quenching device 12, drying device 13, back looper 14, tempering machine 15, coiler 16.

[0019] Firstly, the steel coil produced in the previous process is uncoiled by the uncoiler 1 and enters the pickling equipment 2 to clean the surface of the steel plate, and then enters the front looper 3 and the continuous annealing furnace 4 . According to the different specifications of the actual strip steel products, the strip steel is heated to 850°C in the continuous annealing furnace 4 for a period of time, then slowly cooled to 600°C and then enters the aluminum-zinc pot 6 filled with aluminum-zinc liquid through the furnace nose 5 for further processing. Hot-dip aluminum-zinc operation, the aluminum-zinc pot 6...

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Abstract

The invention discloses a device for hot-dip coating Al-Zn (aluminum-zincic) on super high-strength band steel and processing technology. The device comprises a decoiler, a pickler, a front looper, an annealing furnace, a fast cooling device, an overaging furnace, a back looper, a trimming machine and a coiling machine which are connected in sequence as well as an Al-Zn pot, at least one cooling bellows, water quench equipment and a drying unit, wherein the Al-Zn pot contains Al-Zn alloy liquid and is arranged between the annealing furnace and the fast cooling device, the cooling bellows is arranged between the fast cooling device and the overaging furnace, and the water quench equipment and the drying unit are arranged between the overaging furnace and the back looper. The device and the technology ensures the strength of the band steel, improves the product quality, overcomes the problem of difficult hot-dip coating mettallic coat on the super high-strength band steel products, improves the product profits of enterprises and brings in considerable economic benefit.

Description

technical field [0001] The invention relates to the field of steel strip hot-coating, in particular to a production line for hot-dipping aluminum-zinc steel strip. Background technique [0002] Ultra-high-strength steel strip products are a development trend of cold-rolled strip products. Ultra-high-strength steel strip usually refers to cold-rolled steel strip with a tensile strength greater than 600MPa. There are two ways to increase the strength of strip steel: alloy strengthening and phase transformation strengthening. These two methods are combined with each other, but they have different emphases according to the production equipment. What is competitive in the market and easy to produce is the production process based on phase transformation strengthening, that is, reducing the alloy content and producing ultra-high-strength strip steel by increasing the cooling rate. This requires great efforts to develop rapid cooling technology and equipment for strip steel. Re...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C2/04C23C2/06C23C2/12C23C2/40
Inventor 向顺华刘华飞瞿培磊朱晓东
Owner BAOSHAN IRON & STEEL CO LTD
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