Alloying process control method for hot-dip galvanized alloyed steel plate
A process control and alloying technology, applied in hot dip plating process, heat treatment process control, metal material coating process, etc., can solve the problem of uneven degree of alloying, achieve uniform degree of alloying, easy operation, powder good chemical performance
Active Publication Date: 2021-02-09
MAANSHAN IRON & STEEL CO LTD
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Problems solved by technology
[0008] Aiming at the deficiencies of the prior art, the present invention provides a method for controlling the alloying process of a hot-dip galvanized alloyed steel sheet, which solves the problem of uneven alloying degree in the width direction of the strip steel
Method used
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Embodiment
[0048] The alloying process implementation cases of zinc-iron alloyed products of different specifications and steel types are shown in Table 5 below.
[0049] Table 5 Example
[0050]
[0051]
[0052] The performance indicators of the coating are shown in Table 6 below.
[0053] Table 6 coating performance index
[0054]
[0055]
[0056] To sum up, the zinc-iron alloyed products of different specifications and steel types obtained by this hot-dip galvanized alloyed steel plate alloying process control method are mainly δ phase, with good anti-powdering performance, and the coating phase structure is along the width direction of the strip. Uniform and consistent.
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The invention discloses an alloying process control method for a hot-dip galvanized alloyed steel plate, and relates to the technical field of iron and steel smelting. According to the alloying process control method for the hot-dip galvanized alloyed steel plate, the proper production line speed is selected according to the specifications of steel types and the capacity of a production line. Thepower of a soaking section of an alloying furnace is kept unchanged, and the power of a main heating section of the alloying furnace is reasonably selected according to changes of the steel types andspecifications to obtain a required coating phase structure. Meanwhile, reasonable edge heater power is selected to ensure that the alloying degree of strip steel in the width direction is uniform.
Description
technical field [0001] The invention relates to the technical field of iron and steel smelting, in particular to a method for controlling the alloying process of a hot-dip galvanized alloyed steel sheet. Background technique [0002] With the improvement of the corrosion resistance requirements of the car body, more and more galvanized automobile sheets are applied to the inner and outer sheets of automobiles. The surface quality of the electro-galvanized automotive sheet is the best, but the thickness of the coating is thin, which cannot meet the needs of corrosion resistance development. The coating thickness of the hot-dip galvanized automobile sheet is relatively thick, and the corrosion resistance is very good, but the welding performance, coating performance and stone chipping resistance of the pure zinc layer are poor. Alloying annealing is to heat the hot-dip galvanized sheet to a certain temperature after hot-dip galvanizing, and through the mutual diffusion phase ...
Claims
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IPC IPC(8): C23C2/28C23C2/06C23C2/20C21D9/00C21D1/26C21D6/00C21D11/00
CPCC23C2/28C23C2/06C23C2/20C21D9/0081C21D1/26C21D6/00C21D11/00
Inventor 陈乐赵云龙崔磊周世龙葛浩张喜秋李德超
Owner MAANSHAN IRON & STEEL CO LTD
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