Method for producing 600g zinc-coated spangle-free hot-dip galvanized sheet based on thin slab continuous casting and rolling hot-based raw materials and acid plating continuous production line

A thin slab continuous casting, continuous casting and rolling technology, applied in hot dip plating process, metal material coating process, coating and other directions, can solve problems such as backward technology, achieve good surface quality, stable performance, high drawing speed Effect

Active Publication Date: 2021-04-13
RIZHAO BAOHUA NEW MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, at present, the production technology of zinc-free 600g ultra-high zinc layer galvanized sheet in domestic hot-dip galvanizing is relatively backward and cannot meet the needs of various industries, especially the construction industry. Therefore, it is urgent to develop a zinc-free 600g ultra-high zinc layer Galvanized sheet production process

Method used

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  • Method for producing 600g zinc-coated spangle-free hot-dip galvanized sheet based on thin slab continuous casting and rolling hot-based raw materials and acid plating continuous production line
  • Method for producing 600g zinc-coated spangle-free hot-dip galvanized sheet based on thin slab continuous casting and rolling hot-based raw materials and acid plating continuous production line
  • Method for producing 600g zinc-coated spangle-free hot-dip galvanized sheet based on thin slab continuous casting and rolling hot-based raw materials and acid plating continuous production line

Examples

Experimental program
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Effect test

Embodiment 1

[0030] A process method for producing 600g zinc-coated zinc-free hot-dip galvanized sheet with hot-based raw materials for continuous casting and rolling of thin plates and continuous production line for pickling and galvanizing, comprising the following process steps: raw material rolls are continuously cast and rolled by full endless thin slabs Process production, and then pickling, leveling, heating, galvanizing, skin passivation, passivation, and coiling into hot-dip galvanized coils through the continuous pickling production line. The product specification is 2.0mm*1500mm, and the steel type is DX51D+Z.

[0031] As a preference, the full-endless thin slab continuous casting and rolling process refers to: the continuous casting slab produced by the continuous casting machine directly enters the large-reduction rolling mill, rolls to an 8mm intermediate slab, and is heated to 1100°C by an induction heating furnace before entering 5 stands of finish rolling, coiling after lam...

Embodiment 2

[0040] A process method for producing 600g zinc-coated zinc-free hot-dip galvanized sheet with hot-based raw materials for continuous casting and rolling of thin plates and continuous production line for pickling and galvanizing, comprising the following process steps: raw material rolls are continuously cast and rolled by full endless thin slabs Process production, and then pickling, leveling, heating, galvanizing, skin passivation, passivation, and coiling into hot-dip galvanized coils through the pickling continuous production line. The product specification is 2.0mm*1500mm, and the steel type is SGHC.

[0041] As a preference, the full-endless thin slab continuous casting and rolling process refers to: the continuous casting slab produced by the continuous casting machine directly enters the large-reduction rolling mill, rolls to a 20mm intermediate slab, and is heated to 1200°C by an induction heating furnace before entering 5 stands of finish rolling, coiling after lamina...

Embodiment 3

[0050] A process method for producing 600g zinc-coated zinc-free hot-dip galvanized sheet with hot-based raw materials for continuous casting and rolling of thin plates and continuous production line for pickling and galvanizing, comprising the following process steps: raw material rolls are continuously cast and rolled by full endless thin slabs Process production, and then pickling, leveling, heating, galvanizing, skin passivation, passivation, and coiling into hot-dip galvanized coils through the continuous pickling production line. The product specification is 3.0mm*1500mm, and the steel type is S350GD+Z.

[0051] As a preference, the full-endless thin slab continuous casting and rolling process refers to: the continuous casting slab produced by the continuous casting machine directly enters the large-reduction rolling mill, rolls to a 15mm intermediate slab, and is heated to 1150°C by an induction heating furnace before entering 5 stands of finish rolling, coiling after la...

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Abstract

A method for producing 600g zinc-coated spangle-free hot-dip galvanized sheet based on thin slab continuous casting and rolling hot-based raw materials and an acid plating continuous production line. The invention belongs to the technical field of iron and steel, and relates to a method for producing a 600g zinc-coated hot-dip galvanized sheet with a continuous casting and rolling hot-based raw material of a full-endless thin slab and an acid plating continuous production line. Continuous casting and rolling process production, and then pickling, leveling, heating, galvanizing, skin pass, passivation, and coiling into hot-dip galvanized coils through the continuous pickling production line. The method of the invention can stably produce 2.0-3.0mm*1500m 600g zinc-coated hot-dip galvanized sheet, the product has good surface quality, high dimensional accuracy and stable performance, and can simultaneously replace traditional cold-based and hot-based products.

Description

technical field [0001] The invention belongs to the technical field of iron and steel, and relates to a method for producing a 600g zinc-coated hot-dip galvanized sheet from a full-endless thin slab continuous casting and rolling hot-based raw material and an acid plating continuous production line. Background technique [0002] Due to the particularity of the geology in the western region, the corrosion resistance of materials is highly required in infrastructure construction. Hot-dip galvanizing is the most common, economical and effective anti-corrosion method. Continuous hot-dip galvanizing has the advantages of low production cost, superior coating performance and long service life. Hot-dip galvanized sheets are widely used in the construction industry. Among steel plates The proportion is as high as 13-35%. [0003] However, at present, the production technology of zinc-free 600g ultra-high zinc layer galvanized sheet in domestic hot-dip galvanizing is relatively back...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B21C37/02B21B1/46C23C2/40C23C2/06C23C22/73C23C2/20
CPCB21B1/463B21C37/02C23C2/06C23C2/20C23C2/40C23C22/73
Inventor 王慧凯尹怡奎王学伦张波郑志刚周城连晓磊郭久明徐帅汲广桥生西鹏
Owner RIZHAO BAOHUA NEW MATERIAL CO LTD
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