CN102676969A - Manufacturing method for hot-dip galvanized steel sheet - Google Patents
Manufacturing method for hot-dip galvanized steel sheet Download PDFInfo
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- CN102676969A CN102676969A CN2012101437670A CN201210143767A CN102676969A CN 102676969 A CN102676969 A CN 102676969A CN 2012101437670 A CN2012101437670 A CN 2012101437670A CN 201210143767 A CN201210143767 A CN 201210143767A CN 102676969 A CN102676969 A CN 102676969A
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Abstract
The invention discloses a manufacturing method for a hot-dip galvanized steel sheet. The manufacturing method comprises the steps of: by using cold-rolled steel sheets as raw materials, welding rolled coils together to form a precondition of continuous production, and finishing washing, annealing and zinc coating hot-dip step by step and is characterized by comprising the following specific steps of: uncoiling, shearing, welding, washing, baking, conveying by using a loose roller, annealing, cooling, carrying out zinc coating hot-dip, cooling by using a draught fan, cooling in a water quenching groove, air-drying, adjusting by using the loose roller, finishing, withdrawing-straightening, passivating, washing, drying, buffering by using the loose roller and coiling. The manufacturing method for the hot-dip galvanized steel sheet provided by the invention has the advantages that the adhesiveness of a coating of the hot-dip galvanized steel sheet is increased, the phenomena such as the falling, stripping and the like of zinc powder of the coating is reduced, the grain orientation of the hot-dip galvanized steel sheet is optimized, the scratch resistance, abrasion resistance and adhesion performance of the coating are obviously increased, the production technology is simple, and the cost is lower.
Description
Technical field
The present invention relates to a kind of making method of heat zinc coating plate.
Background technology
[0002] rolling the plate color coating, generally to select heat zinc coating plate for use be base-material.Hot-dip galvanizing sheet steel since its excellent corrosion resisting performance, good coating performance and clean outward appearance obtained using widely at household electrical appliance, body of a motor car with production such as plates.Requirement to hot dip galvanizing steel plate coating is the strong adhesion of coating and substrate, does not come off during the punching press distortion, in addition good welding property, corrosion resistance nature and phosphorus characteristic will be arranged, with the erosion resistance after guaranteeing paint film adhesion and painting.Yet; There is the efflorescence of coating in hot-dip galvanizing sheet steel and problem such as peels off in the punch process process of practical application; Caused the destruction of coating, further had influence on the erosion resistance and being coated with property of coating, efflorescence is relevant with chemical ingredients and the phase structure peeled off with coating; Coating efflorescence amount raises with the iron level in the coating and increases, and has influenced the superperformance of hot-dip galvanizing sheet steel to a great extent.Summary of the invention
Technical problem to be solved by this invention provides a kind of making method of heat zinc coating plate, strengthens welding property, corrosion resistance nature and the phosphorus characteristic of hot-dip galvanizing sheet steel, with the erosion resistance after guaranteeing paint film adhesion and painting.
The technical scheme that the present invention adopted is following:
A kind of making method of heat zinc coating plate; With the cold-reduced sheet is starting material; Roll volume to each and weld formation quantity-produced precondition; Progressively accomplish cleaning, annealing and the hot dip of zinc layer, comprise following detailed step: uncoiling, shearing, welding, cleaning, baking, kink transmission, annealing, cooling, the hot dip of zinc layer, blower fan cooling, the cooling of hardening groove, air-dry, kink adjusting, polishing, straightening, passivation, washing, oven dry, kink, rolling.
Said uncoiling is to be placed in pallet rolling volume, cuts off and rolls band, opens and rolls volume, and the traction magnetic tape trailer makes to roll to roll up to unfold and becomes to roll the plate form.
Said shearing is exactly to carry out magnetic tape trailer and shear with the plate that rolls of cutting machine after to uncoiling, guarantees to roll the neat and consistency of thickness of volume, makes it easy to carry.
Said cleaning comprises chemical degreasing and electrolytic degreasing, and wherein electrolytic degreasing is under 17V, 1000A condition, in the mixing solutions of sodium hydroxide and Pottasium Hydroxide, to carry out the electricity reaction.
Said annealing is carried out recrystallize and is heated to 630-730 ℃ in continuous annealing furnace, make to roll that the plate hardenability descends, plasticity improves; The wherein tight sealing of continuous annealing furnace, the mixed gas of a nitrogen injection and hydrogen is to keep rolling the clean environment that plate is heated.
The hot dip of said zinc layer is to adopt the zinc pot zinc-plated, and wherein zinc pot temperature will remain on 465 ℃.
Said polishing is the leveling and pressing template that can cause the surperficial zinc granule of sheet deformation and the remnants of zinc layer hot dip process to carry out to sheet material continuous annealing furnace pyroprocess when annealing.
The making method of a kind of heat zinc coating plate provided by the invention has improved the tack of hot dip galvanizing steel plate coating, and the coating zinc powder such as comes off, peels off at phenomenon to be reduced; Make the coating grain orientation optimization of hot-dip galvanizing sheet steel, anti-drawing property, wear resistance and the adhesion property of coating obviously improve; Production technique is simple, and cost is lower.
Embodiment
A kind of making method of heat zinc coating plate; With the cold-reduced sheet is starting material; Roll volume to each and weld formation quantity-produced precondition; Progressively accomplish cleaning, annealing and the hot dip of zinc layer, comprise following detailed step: uncoiling, shearing, welding, cleaning, baking, kink transmission, annealing, cooling, the hot dip of zinc layer, blower fan cooling, the cooling of hardening groove, air-dry, kink adjusting, polishing, straightening, passivation, washing, oven dry, kink, rolling.
Said uncoiling is to be placed in pallet rolling volume, cuts off and rolls band, opens and rolls volume, and the traction magnetic tape trailer makes to roll to roll up to unfold and becomes to roll the plate form.
Said shearing is exactly to carry out magnetic tape trailer and shear with the plate that rolls of cutting machine after to uncoiling, guarantees to roll the neat and consistency of thickness of volume, makes it easy to carry.
Said cleaning comprises chemical degreasing and electrolytic degreasing, and wherein electrolytic degreasing is under 17V, 1000A condition, in the mixing solutions of sodium hydroxide and Pottasium Hydroxide, to carry out the electricity reaction.
Said annealing is carried out recrystallize and is heated to 630-730 ℃ in continuous annealing furnace, make to roll that the plate hardenability descends, plasticity improves; The wherein tight sealing of continuous annealing furnace, the mixed gas of a nitrogen injection and hydrogen is to keep rolling the clean environment that plate is heated.
The hot dip of said zinc layer is to adopt the zinc pot zinc-plated, and wherein zinc pot temperature will remain on 465 ℃.
Said polishing is the leveling and pressing template that can cause the surperficial zinc granule of sheet deformation and the remnants of zinc layer hot dip process to carry out to sheet material continuous annealing furnace pyroprocess when annealing.
The making method of a kind of heat zinc coating plate provided by the invention has improved the tack of hot dip galvanizing steel plate coating, and the coating zinc powder such as comes off, peels off at phenomenon to be reduced; Make the coating grain orientation optimization of hot-dip galvanizing sheet steel, anti-drawing property, wear resistance and the adhesion property of coating obviously improve; Production technique is simple, and cost is lower.
Claims (7)
1. the making method of a heat zinc coating plate; With the cold-reduced sheet is starting material; Roll volume to each and weld formation quantity-produced precondition, progressively accomplish cleaning, annealing and the hot dip of zinc layer, it is characterized in that; Comprise the steps, be successively: uncoiling, shearing, welding, cleaning, baking, kink transmission, annealing, cooling, the hot dip of zinc layer, blower fan cooling, the cooling of hardening groove, air-dry, kink adjusting, polishing, straightening, passivation, washing, oven dry, kink, rolling.
2. the making method of heat zinc coating plate according to claim 1 is characterized in that, said uncoiling is to be placed in pallet rolling volume, cuts off and rolls band, opens and rolls volume, and the traction magnetic tape trailer makes to roll to roll up to unfold and becomes to roll the plate form.
3. the making method of heat zinc coating plate according to claim 1 is characterized in that, said shearing is exactly to carry out magnetic tape trailer and shear with the plate that rolls of cutting machine after to uncoiling, is used to guarantee to roll the neat and consistency of thickness of volume, makes it easy to carry.
4. the making method of heat zinc coating plate according to claim 1; It is characterized in that; Said cleaning comprises chemical degreasing and electrolytic degreasing, and wherein electrolytic degreasing is under 17V, 1000A condition, in the mixing solutions of sodium hydroxide and Pottasium Hydroxide, to carry out the electricity reaction.
5. the making method of heat zinc coating plate according to claim 1 is characterized in that, said annealing is carried out recrystallize and heated to 630-730 ℃ the wherein tight sealing of continuous annealing furnace, the mixed gas of a nitrogen injection and hydrogen in continuous annealing furnace.
6. the making method of heat zinc coating plate according to claim 1 is characterized in that, the hot dip of said zinc layer is to adopt the zinc pot zinc-plated, and wherein zinc pot temperature is 465 ℃.
7. the making method of heat zinc coating plate according to claim 1; It is characterized in that said polishing is the leveling and pressing template that can cause the surperficial zinc granule of sheet deformation and the remnants of zinc layer hot dip process to carry out to sheet material continuous annealing furnace pyroprocess when annealing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101437670A CN102676969A (en) | 2012-05-10 | 2012-05-10 | Manufacturing method for hot-dip galvanized steel sheet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101437670A CN102676969A (en) | 2012-05-10 | 2012-05-10 | Manufacturing method for hot-dip galvanized steel sheet |
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| Publication Number | Publication Date |
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| CN102676969A true CN102676969A (en) | 2012-09-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2012101437670A Pending CN102676969A (en) | 2012-05-10 | 2012-05-10 | Manufacturing method for hot-dip galvanized steel sheet |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105385815A (en) * | 2015-11-26 | 2016-03-09 | 佛山市高明区杨和金属材料专业镇技术创新中心 | Production process for hot-dip galvanized steel plate |
| CN105862026A (en) * | 2016-04-19 | 2016-08-17 | 海安县晋全电工器材有限公司 | Copper medal galvanization production line |
| CN106702101A (en) * | 2016-08-30 | 2017-05-24 | 重庆万达薄板有限公司 | Preparation technology of galvanized steel sheet with continuous hot-dip spangles |
| CN106760134A (en) * | 2017-02-20 | 2017-05-31 | 南通中港涂装设备有限公司 | New special lightgage steel joist |
| CN111270297A (en) * | 2020-03-10 | 2020-06-12 | 攀钢集团攀枝花钢铁研究院有限公司 | Method for reducing zinc or zinc particle defects of hot-dip galvanized sheet surface strip |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1594655A (en) * | 2003-09-17 | 2005-03-16 | 张锦彬 | Method for continuous production of hot galvanizing color-painted steel strip |
| CN201737995U (en) * | 2010-06-21 | 2011-02-09 | 广东韩江钢板有限公司 | Hot-dip galvanizing serial production line |
| CN102286716A (en) * | 2011-08-26 | 2011-12-21 | 无锡舜特金属制品有限公司 | Continuous hot dip galvanizing process for strip steel |
-
2012
- 2012-05-10 CN CN2012101437670A patent/CN102676969A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1594655A (en) * | 2003-09-17 | 2005-03-16 | 张锦彬 | Method for continuous production of hot galvanizing color-painted steel strip |
| CN201737995U (en) * | 2010-06-21 | 2011-02-09 | 广东韩江钢板有限公司 | Hot-dip galvanizing serial production line |
| CN102286716A (en) * | 2011-08-26 | 2011-12-21 | 无锡舜特金属制品有限公司 | Continuous hot dip galvanizing process for strip steel |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105385815A (en) * | 2015-11-26 | 2016-03-09 | 佛山市高明区杨和金属材料专业镇技术创新中心 | Production process for hot-dip galvanized steel plate |
| CN105862026A (en) * | 2016-04-19 | 2016-08-17 | 海安县晋全电工器材有限公司 | Copper medal galvanization production line |
| CN106702101A (en) * | 2016-08-30 | 2017-05-24 | 重庆万达薄板有限公司 | Preparation technology of galvanized steel sheet with continuous hot-dip spangles |
| CN106702101B (en) * | 2016-08-30 | 2018-09-14 | 重庆万达薄板有限公司 | Continuous Heat is coated with the preparation process of colored galvanized steel plain sheet |
| CN106760134A (en) * | 2017-02-20 | 2017-05-31 | 南通中港涂装设备有限公司 | New special lightgage steel joist |
| CN111270297A (en) * | 2020-03-10 | 2020-06-12 | 攀钢集团攀枝花钢铁研究院有限公司 | Method for reducing zinc or zinc particle defects of hot-dip galvanized sheet surface strip |
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Application publication date: 20120919 |