CN102400077A - Method for producing continuous hot-dip aluminum-silicon-boron alloy steel plates - Google Patents
Method for producing continuous hot-dip aluminum-silicon-boron alloy steel plates Download PDFInfo
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Abstract
The invention relates to a method for producing continuous hot-dip aluminum-silicon-boron alloy steel plates, and belongs to the technical field of steel strip and plate coating composite materials. The method mainly comprises the following steps of: smelting aluminum ingots, silicon ingots and boron ingots in an induction heating furnace to form an aluminum-silicon-boron coating solution, performing chemical degreasing and electrolytic degreasing on cold-rolled steel plates, dip-coating the aluminum-silicon-boron coating solution on the front and the back of the cold-rolled steel plates, performing air knife flattening, air cooling, optical finishing, withdrawal and straightening, passivation and drying, and thus obtaining finished products. The manufacturing process is simple, raw material source is readily-available and manufacturing cost is low; and by the method, the surface quality of the aluminized plates can be effectively improved, and the surfaces of the aluminized plates are smooth and flat and have no aluminum silicon alloy patterns.
Description
Technical field
The present invention relates to a kind of working method of continuous hot dip aluminum silicon boron alloy steel plate, belong to steel band plate coating technical field of composite materials.
Background technology
Produce in the continuous hot dip aluminum technological process at Sendzimir method, the aluminum-plated pot temperature reaches 680～700 ℃, and aluminium content is 90～92 weight %, and silicone content is under the situation of 8～10 weight %, and the hot dip aluminium sheet smooth surface of producing is smooth, no zinc flower.But in continuous flow procedure, aluminum silicon alloy is because go out the problem of aluminium silicon pot speed, and aluminum silicon alloy is deposited on the steel plate, has grown very big aluminum silicon alloy flower.Satisfy not a lot of needs and do not had colored alclad sheet requirement of client.
Summary of the invention
The objective of the invention is to overcome the deficiency that exists in the prior art, thereby a kind of working method of continuous hot dip aluminum silicon boron alloy steel plate is provided, can improve the aluminum silicon alloy flower on the surface of alclad sheet effectively, make the alclad sheet smooth surface smooth.
According to technical scheme provided by the invention, a kind of working method of continuous hot dip aluminum silicon boron alloy steel plate, adopt following process step: it is formed proportioning and calculates by weight:
(1), the configuration of aluminium, silicon, boron coating solution:
Get 90～92 parts of aluminium ingots, 8～10 parts of silicon ingots, boron ingot and be placed in the induction heater for 0.03～0.1 part and melt, the fusing Heating temperature: 680～700 ℃, fusing time 12～18 days, aluminium, silicon, boron coating solution temperature are: 680～700 ℃, for use;
(2), the production of continuous hot dip aluminum, silicon, boron alloy steel plate:
(a), substrate is cold-rolled steel sheet, the width of cold-rolled steel sheet is 1000～1250 ㎜; Thickness is 0.5～2.0 ㎜; Cold-rolled steel sheet is placed on carries out chemical degreasing in the solution tank and handle; Put into water and solid caustic soda in the solution tank and process scale solution; The concentration expressed in percentage by weight of solid caustic soda is in the scale solution: 1～2%, and the scale solution temperature is: 70～90 ℃, the chemical degreasing time is: 120～150 meters/minute;
(b), the above-mentioned cold-rolled steel sheet of handling through chemical degreasing is placed on carries out electrolytic degreasing in the solution tank; Put into water and solid caustic soda in the solution tank and process scale solution; The concentration expressed in percentage by weight of solid caustic soda is in the scale solution: 2～3%; The scale solution temperature is: 70～90 ℃, the electrolytic degreasing time is: 120～150 meters/minute;
(c), above-mentioned cold-rolled steel sheet after chemical degreasing and electrolytic degreasing are handled is heat-treated in continuous annealing furnace: carry out thermal pretreatment earlier, preheating temperature is: 450～550 ℃, be warm up time: 30～120 meters/minute; Carry out fast thermal treatment again, fast thermal treatment temp is 680～780 ℃, and the fast hot time is: 30～120 meters/minute;
(d), with above-mentioned heat treated cold-rolled steel sheet aluminium, silicon, boron coating solution for use in the even dip-coating of tow sides on the hot-dip coating unit, the treatment time is: 120～150 meters/minute;
(e), the above-mentioned aluminium silicon boron alloy steel plate that carries out dip-coating aluminium, silicon, boron coating solution is controlled the thickness of coating under air knife, air knife pressure is 0.008～0.01MPa, thickness of coating 40～200 grams/square metre;
(f), with above-mentioned aluminium, silicon, boron alloy steel plate through the blower fan deepfreeze: cooling temperature is: 10-20 ℃/S, fan speed: 120～150 meters/minute;
(g), above-mentioned aluminium through the blower fan deepfreeze, silicon, boron alloy steel plate are carried out polishing under the polishing machine: polishing machine pressure is: 100～300 tons, polishing motor speeds are: 120～150 meters/minute;
(h), above-mentioned aluminium through polishing, silicon, boron alloy steel plate carried out straightening handle under the straightening machine, straightening machine tension force is that 10～15 tons, straightening motor speeds are 120～150 meters/minute;
(j), above-mentioned aluminium through straightening, silicon, boron alloy steel plate are carried out Passivation Treatment under the passivation coating machine; Passivating solution is to add chromic acid in the water, and the concentration expressed in percentage by weight of chromic acid is in the passivating solution: 30～40%, and passivation time is: 120～150 meters/minute;
(k), above-mentioned aluminium, silicon, boron alloy steel plate through Passivation Treatment dried handle the back and be finished product, bake out temperature is: 80～100 ℃, drying time is: 120～150 meters/minute.
ME of the present invention is simple, raw material material convenient sources, and low cost of manufacture can be improved the surface quality of alclad sheet effectively, makes the alclad sheet smooth surface smooth; Satisfy a lot of flower alclad sheet requirement of client of not having.
Embodiment
Below in conjunction with specific embodiment the present invention is described further.
The starting material that adopt in embodiments of the present invention are market and purchase, and the equipment of employing is the routine unit of aluminizing, and comprise induction heater, solution tank, continuous annealing furnace, hot-dip coating unit, blower fan, polishing machine and dry cabinet etc. being linked to be unit.
Embodiment one: the working method of a kind of continuous hot dip aluminum silicon of the present invention boron alloy steel plate, and adopt following process step: it is formed proportioning and calculates by weight:
Getting 90 parts of aluminium ingots, silicon ingot 10, boron ingot is placed on for 0.03 part and carries out heat fused in the induction heater, Heating temperature: 680 ℃, and fusing time 18 days, the coating solution temperature is: 680 ℃, for use; Substrate is selected cold-rolled steel sheet for use, and the cold-rolled steel sheet width is 1000 ㎜, and thickness is 2 ㎜.
1, getting cold-rolled steel sheet is placed on and carries out chemical degreasing in the solution tank and handle; Put into the scale solution that the solid caustic soda of 100 kilograms water and 1 kilogram is processed in the solution tank; The concentration expressed in percentage by weight of solid caustic soda is in the scale solution: 1%, and the scale solution temperature is: 70 ℃, degreasing time is: 120 meters/minute;
2, the above-mentioned cold-rolled steel sheet of handling through chemical degreasing is placed on carries out electrolytic degreasing in the solution tank; Put into 100 kilograms water and 2 kilograms solid caustic soda in the solution tank and process scale solution; The concentration expressed in percentage by weight of solid caustic soda is in the scale solution: 2%; The scale solution temperature is: 70 ℃, degreasing time is: 120 meters/minute;
3, above-mentioned cold-rolled steel sheet after chemical degreasing and electrolytic degreasing are handled is heat-treated in continuous annealing furnace: carry out thermal pretreatment earlier, preheating temperature is: 450 ℃, be warm up time: 30 meters/minute; Carry out fast thermal treatment again, fast thermal treatment temp is 680 ℃, and the fast hot time is: 30 meters/minute;
4, with above-mentioned heat treated cold-rolled steel sheet coating solution for use in the even dip-coating of tow sides on the hot-dip coating unit, the treatment time is: 120 meters/minute;
5, the above-mentioned aluminium silicon boron plate that carries out dip-coating coating solution is controlled the thickness of coating under air knife, air knife pressure is 0.008MPa, thickness of coating 200 grams/square metre;
6, above-mentioned aluminium silicon boron plate is carried out air-cooled processing through blower fan: cooling temperature is: 10 ℃/S, cooling time are: 150 meters/minute; Cooling blower power 450KW, manufacturer Wuxi state loyal blower fan factory.
7, above-mentioned aluminium silicon boron plate through air-cooled processing is carried out polishing on the polishing unit: polishing machine pressure is: 100 tons, machine speed are: 120 meters/minute; Polishing machine manufacturer is Wuxi five smeltings.
8, above-mentioned aluminium silicon boron plate through polishing is carried out straightening under the straightening machine and handle, tension force is that 10 tons, machine speed are 120 meters/minute; Straightening machine manufacturer is that Xiangyang is rich inferior.
9, above-mentioned aluminium silicon boron plate through straightening is carried out Passivation Treatment in deactivation slot, the passivating solution in the deactivation slot is employed in and adds 30 kilograms of chromic acid in 100 kg of water, and the concentration expressed in percentage by weight that makes chromic acid in the passivating solution is 30%, and passivation time is: 120 meters/minute;
10, above-mentioned aluminium silicon boron alloy steel plate through Passivation Treatment is dried the processing back and be finished product: temperature is: 80 ℃, drying time is: 120 meters/minute.
Embodiment two: the working method of a kind of continuous hot dip aluminum silicon of the present invention boron alloy steel plate, and adopt following process step: it is formed proportioning and calculates by weight:
Getting 92 parts of aluminium ingots, 8 parts of silicon ingots, boron ingot is placed on for 0.1 part and carries out heat fused in the induction heater, Heating temperature: 700 ℃, and fusing time 12 days, the coating solution temperature is: 700 ℃, for use; Substrate is selected cold-rolled steel sheet for use, and the cold-rolled steel sheet width is 1250 ㎜, and thickness is 0.5 ㎜.
1, getting cold-rolled steel sheet is placed on and carries out chemical degreasing in the solution tank and handle; Put into the scale solution that the solid caustic soda of 100 kilograms water and 2 kilograms is processed in the solution tank; The concentration expressed in percentage by weight of solid caustic soda is in the scale solution: 2%, and the scale solution temperature is: 90 ℃, degreasing time is: 150 meters/minute;
2, the above-mentioned cold-rolled steel sheet of handling through chemical degreasing is placed on carries out electrolytic degreasing in the solution tank; Put into 100 kilograms water and 3 kilograms solid caustic soda in the solution tank and process scale solution; The concentration expressed in percentage by weight of solid caustic soda is in the scale solution: 3%; The scale solution temperature is: 90 ℃, degreasing time is: 150 meters/minute;
3, above-mentioned cold-rolled steel sheet after chemical degreasing and electrolytic degreasing are handled is heat-treated in continuous annealing furnace: carry out thermal pretreatment earlier, preheating temperature is: 550 ℃, be warm up time: 120 meters/minute; Carry out fast thermal treatment again, fast thermal treatment temp is 780 ℃, and the fast hot time is: 120 meters/minute;
4, with above-mentioned heat treated cold-rolled steel sheet coating solution for use in the even dip-coating of tow sides on the hot-dip coating unit, the treatment time is: 150 meters/minute;
5, the above-mentioned aluminium silicon boron alloy steel plate that carries out dip-coating coating solution is controlled the thickness of coating under air knife, air knife pressure is 0.01MPa, thickness of coating 40 grams/square metre;
6, above-mentioned aluminium silicon boron alloy steel plate is carried out air-cooled processing through blower fan: cooling temperature is: 20 ℃/S, cooling time are: 120 meters/minute; Cooling blower power 450KW, manufacturer Wuxi state loyal blower fan factory.
7, above-mentioned aluminium silicon boron alloy steel plate through air-cooled processing is carried out polishing on the polishing unit: polishing machine pressure is: 200 tons, machine speed are: 150 meters/minute; Polishing machine manufacturer is Wuxi five smeltings.
8, above-mentioned aluminium silicon boron alloy steel plate through polishing is carried out straightening under the straightening machine and handle, tension force is that 15 tons, machine speed are 150 meters/minute; Straightening machine manufacturer is that Xiangyang is rich inferior.
9, will go up art and in deactivation slot, carry out Passivation Treatment through the aluminium silicon boron alloy steel plate of straightening, the passivating solution in the deactivation slot is employed in and adds 40 kilograms of chromic acid in 100 kg of water, and the concentration expressed in percentage by weight that makes chromic acid in the passivating solution is 40%, and passivation time is: 150 meters/minute;
10, above-mentioned aluminium silicon boron alloy steel plate through Passivation Treatment is dried the processing back and be finished product, temperature is: 100 ℃, drying time is: 150 meters/minute.
Embodiment three: the working method of a kind of continuous hot dip aluminum silicon of the present invention boron alloy steel plate, and adopt following process step: it is formed proportioning and calculates by weight:
Getting 91 parts of aluminium ingots, 9 parts of silicon ingots, boron ingot is placed on for 0.08 part and carries out heat fused in the induction heater, Heating temperature: 690 ℃, and fusing time 15 days, the coating solution temperature is: 690 ℃, for use; Substrate is selected cold-rolled steel sheet for use, and the cold-rolled steel sheet width is 1150 ㎜, and thickness is 1 ㎜.
1, getting cold-rolled steel sheet is placed on and carries out chemical degreasing in the solution tank and handle; Put into the scale solution that the solid caustic soda of 100 kilograms water and 1.5 kilograms is processed in the solution tank; The concentration expressed in percentage by weight of solid caustic soda is in the scale solution: 1.5%, and the scale solution temperature is: 80 ℃, degreasing time is: 135 meters/minute;
2, the above-mentioned cold-rolled steel sheet of handling through chemical degreasing is placed on carries out electrolytic degreasing in the solution tank; Put into 100 kilograms water and 2.5 kilograms solid caustic soda in the solution tank and process scale solution; The concentration expressed in percentage by weight of solid caustic soda is in the scale solution: 2.5%; The scale solution temperature is: 80 ℃, degreasing time is: 135 meters/minute;
3, above-mentioned cold-rolled steel sheet after chemical degreasing and electrolytic degreasing are handled is heat-treated in continuous annealing furnace: carry out thermal pretreatment earlier, preheating temperature is: 500 ℃, be warm up time: 90 meters/minute; Carry out fast thermal treatment again, fast thermal treatment temp is 740 ℃, and the fast hot time is: 80 meters/minute;
4, with above-mentioned heat treated cold-rolled steel sheet coating solution for use in the even dip-coating of tow sides on the hot-dip coating unit, the treatment time is: 135 meters/minute;
5, the above-mentioned aluminium silicon boron alloy steel plate that carries out dip-coating coating solution is controlled the thickness of coating under air knife, air knife pressure is 0.009MPa, thickness of coating 100 grams/square metre;
6, above-mentioned aluminium silicon boron alloy steel plate is carried out air-cooled processing through blower fan: cooling temperature is: 15 ℃/S, cooling time are: 135 meters/minute; Cooling blower power 450KW, manufacturer Wuxi state loyal blower fan factory.
7, above-mentioned aluminium silicon boron alloy steel plate through air-cooled processing is carried out polishing on the polishing unit: polishing machine pressure is: 250 tons, machine speed are: 135 meters/minute; Polishing machine manufacturer is Wuxi five smeltings.
8, above-mentioned aluminium silicon boron alloy steel plate through polishing is carried out straightening under the straightening machine and handle, tension force is that 13 tons, machine speed are 135 meters/minute; Straightening machine manufacturer is that Xiangyang is rich inferior.
9, will go up art and in deactivation slot, carry out Passivation Treatment through the aluminium silicon boron alloy steel plate of straightening, the passivating solution in the deactivation slot is employed in and adds 35 kilograms of chromic acid in 100 kg of water, and the concentration expressed in percentage by weight that makes chromic acid in the passivating solution is 35%, and passivation time is: 135 meters/minute;
10, above-mentioned aluminium silicon boron alloy steel plate through Passivation Treatment is dried the processing back and be finished product, temperature is: 100 ℃, drying time is: 135 meters/minute.
Claims (1)
1. the working method of a continuous hot dip aluminum silicon boron alloy steel plate is characterized in that: adopt following process step: it is formed proportioning and calculates by weight:
(1), the configuration of aluminium, silicon, boron coating solution:
Get 90～92 parts of aluminium ingots, 8～10 parts of silicon ingots, boron ingot and be placed in the induction heater for 0.03～0.1 part and melt, the fusing Heating temperature: 680～700 ℃, fusing time 12～18 days, aluminium, silicon, boron coating solution temperature are: 680～700 ℃, for use;
(2), the production of continuous hot dip aluminum, silicon, boron alloy steel plate:
(a), substrate is cold-rolled steel sheet, the width of cold-rolled steel sheet is 1000～1250 ㎜; Thickness is 0.5～2.0 ㎜; Cold-rolled steel sheet is placed on carries out chemical degreasing in the solution tank and handle; Put into water and solid caustic soda in the solution tank and process scale solution; The concentration expressed in percentage by weight of solid caustic soda is in the scale solution: 1～2%, and the scale solution temperature is: 70～90 ℃, the chemical degreasing time is: 120～150 meters/minute;
(b), the above-mentioned cold-rolled steel sheet of handling through chemical degreasing is placed on carries out electrolytic degreasing in the solution tank; Put into water and solid caustic soda in the solution tank and process scale solution; The concentration expressed in percentage by weight of solid caustic soda is in the scale solution: 2～3%; The scale solution temperature is: 70～90 ℃, the electrolytic degreasing time is: 120～150 meters/minute;
(c), above-mentioned cold-rolled steel sheet after chemical degreasing and electrolytic degreasing are handled is heat-treated in continuous annealing furnace: carry out thermal pretreatment earlier, preheating temperature is: 450～550 ℃, be warm up time: 30～120 meters/minute; Carry out fast thermal treatment again, fast thermal treatment temp is 680～780 ℃, and the fast hot time is: 30～120 meters/minute;
(d), with above-mentioned heat treated cold-rolled steel sheet aluminium, silicon, boron coating solution for use in the even dip-coating of tow sides on the hot-dip coating unit, the treatment time is: 120～150 meters/minute;
(e), the above-mentioned aluminium silicon boron alloy steel plate that carries out dip-coating aluminium, silicon, boron coating solution is controlled the thickness of coating under air knife, air knife pressure is 0.008～0.01MPa, thickness of coating 40～200 grams/square metre;
(f), with above-mentioned aluminium, silicon, boron alloy steel plate through the blower fan deepfreeze: cooling temperature is: 10-20 ℃/S, fan speed: 120～150 meters/minute;
(g), above-mentioned aluminium through the blower fan deepfreeze, silicon, boron alloy steel plate are carried out polishing under the polishing machine: polishing machine pressure is: 100～300 tons, polishing motor speeds are: 120～150 meters/minute;
(h), above-mentioned aluminium through polishing, silicon, boron alloy steel plate carried out straightening handle under the straightening machine, straightening machine tension force is that 10～15 tons, straightening motor speeds are 120～150 meters/minute;
(j), above-mentioned aluminium through straightening, silicon, boron alloy steel plate are carried out Passivation Treatment under the passivation coating machine; Passivating solution is to add chromic acid in the water, and the concentration expressed in percentage by weight of chromic acid is in the passivating solution: 30～40%, and passivation time is: 120～150 meters/minute;
(k), above-mentioned aluminium, silicon, boron alloy steel plate through Passivation Treatment dried handle the back and be finished product, bake out temperature is: 80～100 ℃, drying time is: 120～150 meters/minute.
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| CN2011103997973A CN102400077A (en) | 2011-12-06 | 2011-12-06 | Method for producing continuous hot-dip aluminum-silicon-boron alloy steel plates |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106319418A (en) * | 2016-08-30 | 2017-01-11 | 无锡银荣板业有限公司 | Continuous hot dip galvanized titanium alloy steel plate producing method |
| CN108914032A (en) * | 2018-07-31 | 2018-11-30 | 江苏大力神科技股份有限公司 | A kind of continuous producing method of steel band plating magnalium zinc |
| CN112041477A (en) * | 2018-03-26 | 2020-12-04 | 日本制铁株式会社 | Method for producing molten Al-based plated steel sheet, and molten Al-based plated steel sheet |
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| US4837091A (en) * | 1983-07-07 | 1989-06-06 | Inland Steel Company | Diffusion alloy steel foil |
| CN1129745A (en) * | 1995-06-26 | 1996-08-28 | 西南交通大学 | Agent for co-cementation of boron, silicon and aluminum |
| CN101709446A (en) * | 2009-12-02 | 2010-05-19 | 无锡银荣板业有限公司 | Method for producing aluminum-silicon-copper-magnesium alloy steel plate by continuous hot dipping |
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2011
- 2011-12-06 CN CN2011103997973A patent/CN102400077A/en active Pending
Patent Citations (3)
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| US4837091A (en) * | 1983-07-07 | 1989-06-06 | Inland Steel Company | Diffusion alloy steel foil |
| CN1129745A (en) * | 1995-06-26 | 1996-08-28 | 西南交通大学 | Agent for co-cementation of boron, silicon and aluminum |
| CN101709446A (en) * | 2009-12-02 | 2010-05-19 | 无锡银荣板业有限公司 | Method for producing aluminum-silicon-copper-magnesium alloy steel plate by continuous hot dipping |
Non-Patent Citations (1)
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| 席晓,王惠萍，张敏，等: "不同冷却条件和B含量对近共晶Al-13.0%Si合金凝固组织的影响", 《铸造》, no. 08, 31 August 2007 (2007-08-31), pages 789 - 793 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106319418A (en) * | 2016-08-30 | 2017-01-11 | 无锡银荣板业有限公司 | Continuous hot dip galvanized titanium alloy steel plate producing method |
| CN112041477A (en) * | 2018-03-26 | 2020-12-04 | 日本制铁株式会社 | Method for producing molten Al-based plated steel sheet, and molten Al-based plated steel sheet |
| CN108914032A (en) * | 2018-07-31 | 2018-11-30 | 江苏大力神科技股份有限公司 | A kind of continuous producing method of steel band plating magnalium zinc |
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Application publication date: 20120404 |