CN1542158A - Hot-dip aluminium zinc alloy steel plate and its preparing process - Google Patents
Hot-dip aluminium zinc alloy steel plate and its preparing process Download PDFInfo
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- CN1542158A CN1542158A CNA2003101062613A CN200310106261A CN1542158A CN 1542158 A CN1542158 A CN 1542158A CN A2003101062613 A CNA2003101062613 A CN A2003101062613A CN 200310106261 A CN200310106261 A CN 200310106261A CN 1542158 A CN1542158 A CN 1542158A
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Abstract
The present invention belongs to the field of steel plate coating technology. The hot Al-Zn plated steel plate is manufactured with cold rolled steel plate and through the steps of electrochemical defatting, heat treatment, hot plating Al-Zn solution on two sides of steel plate, blowing cooling, finishing, stoving and hydraulic shearing. The present invention has low cost and the plating process is completed in a conventional Zn plating machine. The present invention can prolong the service life of steel plate by 4-5 times, and makes steel plate capable of being used in high temperature and corrosive condition with less damage.
Description
Technical field:
The present invention relates to a kind of hot-dip coating aluminium-zinc alloy steel plate and manufacture method thereof, be used for building trade steel construction and automobile component etc., belong to rolled steel plate coating composite material technical field.
Background technology:
Before the present invention made, steel construction and automobile component etc. needed the steel plate materials of use in building trade, are adopted as the pot galvanize steel sheet usually.It is base material that the pot galvanize steel sheet mainly adopts cold rolled sheet, with its carry out electrochemical degreasing and the washing after, operation such as heat-treat again, getting zinc then is placed on and is fused into zinc solution in the induction heater, cold rolling coil steel plate band after the processing is coated with zinc solution in its surface uniformly by zinc-plated unit, carry out polishing, surface treatment, oven dry through the polishing unit again, hydraulic cutter becomes finished product.Hot-dip galvanizing sheet steel work-ing life of this kind structure is short, as at high temperature with have under the corrosive condition and use, and poor safety performance, the metallic matrix embrittlement, in use because of stretching can cause strain, and surface irregularity, brightless, rough.
Summary of the invention:
The objective of the invention is to overcome above-mentioned weak point, thereby providing a kind of can use with having under the corrosive condition at high temperature, not embrittlement of metallic matrix, safety performance is good, surface-brightening, smooth, long service life, manufacture craft is simple, be convenient to operation, hot-dip coating aluminium-zinc alloy steel plate that use range is wide and manufacture method thereof.
Main solution of the present invention is achieved in that
One, its component proportioning of hot-dip coating aluminium-zinc alloy steel sheet alloy of the present invention (percentage ratio by weight) is:
A: aluminium: 53-57, B: silicon: 1.4-1.8, C: zinc: 41.2-45.6.
Two, hot-dip coating aluminium-zinc alloy steel sheet substrate of the present invention adopts Cold Rolled Sheet Steel.
Production technique of the present invention is as follows:
One, the production of alloy: press proportion speed weighing each component:
Get aluminium, zinc, silicon and be placed in the induction heater and melt, the induction heater Heating temperature is that 680-700 ℃, aluminium zinc silicon solution temperature are: 550-650 ℃, fusing time is in induction heater: 12-18 days, stand-by.
Two, the hot-dip coating aluminium-zinc alloy steel-sheet is produced:
1. get the cold rolling coil steel plate and be placed on and carry out electrochemical skimming treatment in the solution tank, put into water and solid caustic soda in the solution tank and make scale solution, the solution weight percentage concentration is: 3-5%, and solution temperature is: 60-80 ℃, degreasing time is: 30-120 rice/minute.
2. thermal treatment: the cold-rolled steel sheet after the above-mentioned electrochemical degreasing is being heat-treated in the carbon stove continuously.
(1). cold-rolled steel sheet is carried out thermal pretreatment earlier: preheating temperature is: 450-550 ℃, be warm up time: 30-120 rice/minute;
(2). will carry out fast thermal treatment after the above-mentioned cold-rolled steel sheet thermal pretreatment; Fast thermal treatment temp is: 680-720 ℃, the fast hot time is: 30-120 rice/minute;
(3). with above-mentioned fast heat treated cold-rolled steel sheet through the blower fan deepfreeze: cooling temperature is: 460-500 ℃, cooling time are: 30-120 rice/minute;
(4). above-mentioned stand-by aluminium zinc solution is coated in uniformly on the cold-rolled steel sheet pros and cons of process blower fan deepfreeze;
(5). the above-mentioned aluminium-zinc alloy steel sheet that carries out coating is carried out polishing under the polishing machine; Polishing machine pressure is: 80-160 ton, machine speed are: 30-120 rice/minute;
(6). will carry out that aluminium-zinc alloy steel sheet that polishing crosses carries out surface treatment and add chromic acid in the purifying trough inner water is that refined solution carries out purification process; The refined solution temperature is: normal temperature, and the refined solution concentration expressed in percentage by weight is: 30-40%, the purifying time is: 30-120 rice/minute;
(7). above-mentioned hot-dip coating aluminium-zinc alloy plate through surface treatment and purification process is dried processing again; Oven temperature is: 60-80 ℃, drying time is: 30-120 rice/minute;
(8). will carry out hydraulic cutter through the hot-dip coating aluminium-zinc alloy steel plate that oven dry is handled at last is finished product.
Compared with the prior art the present invention has the following advantages:
Low cost of manufacture of the present invention, material source is convenient, and equipment adopts conventional zinc-plated unit; Manufacturing process is simple, and work-ing life, the specific heat Enplate can improve 4-5 doubly; Can use under high temperature and corrosive condition, safety performance is reliable; Can prevent the metallic matrix embrittlement, the strain of avoiding stretching and causing; Composite stable, in quick travel (hot dipping), spread coefficient, diffusion time, the damage that bending and tension strain cause, diffusion thickness has optimum ratio; Surface-brightening is smooth, and Application Areas is extensive.
Description of drawings:
Fig. 1 is a process flow sheet of the present invention:
Fig. 2 is a quality examination sense index of the present invention:
Fig. 3 is physical and chemical index of the present invention (steel grade) SPCD:
Embodiment:
Embodiment during following the present invention incites somebody to action in conjunction with the accompanying drawings is further described:
Embodiment one:
The starting material of Cai Yonging are market and purchase in embodiments of the present invention, and the equipment of employing is conventional zinc-plated unit.Zinc-plated unit comprises induction heater, solution degreasing tank, continuous carbon stove, hot-dip coating unit and polishing machine, and oven dry cabinet etc. is linked to be unit.
Alloy production of the present invention: it forms proportioning percentage ratio calculating by weight:
Get aluminium ingot 53, silicon 1.4, zinc ingot metal 45.6 and be placed on 22.4m
3Induction heater (pot) in carry out heat fused, the induction heating furnace temperature is 680 ℃, carries out even heating, fusing time is 15 days in induction heater, solution temperature be 600 ℃ stand-by.
Hot-dip coating aluminium-zinc alloy steel sheet production technique of the present invention is as follows: it is 1050mm that cold-rolled steel sheet selects SPCD, rolled steel plate width, and thickness is 2mm.At first above-mentioned cold-rolled steel sheet is placed on and carries out electrochemical degreasing in the solution tank.Adding 100 kg of water and solid caustic soda mix for 5 kilograms in the solution tank, and the scale solution temperature is 70 ℃, and scale solution weight percentage ratio concentration is 5%, and electrochemical degreasing time is 50 meters/minute (machine speeds).The above-mentioned cold-rolled steel sheet that carries out electrochemical degreasing is heat-treated (preheating, fast heat, fast cold continuous annealing reduction).Cold-rolled steel sheet with electrochemical degreasing is carrying out thermal pretreatment in the carbon stove continuously earlier, and preheating temperature is 500 ℃, and be 50 meters/minute warm up time, (machine speed); And then carry out fast thermal treatment, and fast thermal treatment temp is 730 ℃, the fast hot time is 50-60 rice/minute (machine speed).Carry out air-cooled (speed is cold) processing through blower fan with above-mentioned again through the fast heat treated cold-rolled steel sheet of preheating, its cooling temperature is 600 ℃, and be 50 meters/minute cooling time.Carry out uniform plated aluminium, zinc, silicon solution with above-mentioned through on the cold-rolled steel sheet pros and cons of cooling process, plated aluminium, zinc, silicon solution carries out on zinc-plated unit, and aluminium zinc silicon solution temperature is 600 ℃.Cold-rolled steel sheet carries out behind the hot-dip aluminizing zinc to hot-dip aluminizing zincium steel plate needs carry out the polishing fin cutting on the polishing unit, and it is smooth that the increase of surface accurate degree is become, and polishing machine pressure is: 100 tons, machine speed is: 30-120 rice/minute.Carry out surface treatment and purification process then, surface treatment is decided according to user's particular requirement, can be in its oil surface (roller coating).Need carry out at normal temperatures as handling in the purifying groove, refined solution in the purifying groove adopts and add chromic acid in water, gets 100 kg of water and adds 30 kilograms of chromic acid, and making the refined solution concentration expressed in percentage by weight is 30%, the purifying time be 30-120 rice/minute.The above-mentioned hot-dip aluminizing zincium steel plate that carried out surface treatment and purification process is dried in baking oven again, and oven temperature is 70 ℃, and drying time is 50 meters/minute-60 meters/minute.Carry out rolling at last, hydraulic cutter is a finished product.
Embodiment two:
Alloy production of the present invention:
Get aluminium ingot 55, silicon 1.6, surplus and be fusing in the induction heater (pot) that zinc 43.4 is placed on 22.4M3,680 ℃ of induction heating furnace temperatures, even heating, fusing time is 15 days, solution temperature is: 550 ℃.
The production of hot-dip aluminizing zincium steel plate of the present invention:
1. substrate selects steel grade: SPCD; Rolled steel plate width 1050mm thickness 0.20mm; The electrification degreasing:; Solution temperature: 60 ℃; Solution weight percentage concentration: 4%; Electrification degreasing time (machine speed): 100-120 rice/minute;
2. thermal treatment (the fast cold continuous annealing reduction of the fast heat of preheating)
Preheating temperature: 400 ℃, warm up time (machine speed): 100-120 rice/minute;
730 ℃ of fast hot temperature; The fast hot time (machine speed): 100-120 rice branch; Speed cold (air-cooled)
Cooling temperature: 600 ℃; Cooling time (machine speed): 100-120 rice/minute.
1. hot-dip aluminizing zinc
600 ℃ of aluminium zinc solution temperature: the solution time is (machine speed): 100-120 rice/minute
2. polishing: pressure is: the 80-100 ton; Machine speed: 100-120 rice/minute
3. oven dry: oven temperature: 60 ℃; Drying time (machine speed): 100-120 rice/minute;
4. hydraulic cutter is a finished product
Adopt the producing and manufacturing technique in the foregoing description 1 to produce the hot-dip aluminizing zinc steel sheet that meets quality index equally.
Embodiment three: the production of alloy of the present invention
Get fusing in the induction heater (pot) that aluminium ingot 56, zinc ingot metal 42.5, silicon 1.5 be placed on 22.4M3, the induction heating furnace temperature is: 680 ℃, and even heating, fusing time is: 15 days, solution temperature was: 600 ℃.
Products production of the present invention:
1. substrate selects steel grade: SPCD; Rolled steel plate width 1050mm, thickness 0.8mm; Electrification degreasing: solution temperature: 70 ℃; Solution weight percentage concentration: 5%; Electrification degreasing time (machine speed): 80-100 rice/minute
2. thermal treatment (the fast cold continuous annealing reduction of the fast heat of preheating)
Preheating temperature: 550 ℃, warm up time (machine speed): 80-100 rice/minute; 730 ℃ of fast hot temperature; The fast hot time (machine speed): 80-100 rice branch; Speed cold (air-cooled): cooling temperature: 600 ℃; Cooling time (machine speed): 80-100 rice/minute.
3. hot-dip aluminizing zinc
600 ℃ of aluminium zinc solution temperature: the solution time is (machine speed): 80-100 rice/minute
4. polishing pressure is: 100 tons; Machine speed: 100-120 rice/minute
5. oven dry: oven temperature: 80 ℃; Drying time (machine speed): 80-120 rice/minute;
Adopt the Recipe among the embodiment 1,2 to produce the hot-dip aluminizing zincium steel plate that meets quality index equally.
Claims (2)
1. hot-dip coating aluminium-zinc alloy steel plate, it is characterized in that its form proportioning by weight percentage ratio be:
A: aluminium: 53-57, B: silicon: 1.4-1.8, C: zinc: 41.2-45.6, D: substrate: cold-rolled steel sheet
2, a kind of manufacture method according to the described hot-dip coating aluminium-zinc alloy steel plate of claim 1 is characterized in that adopting following processing condition:
A: the production of alloy: press proportion speed weighing each component:
Get aluminium, zinc, silicon and be placed in the induction heater and melt, the induction heater Heating temperature is that 680-700 ℃, aluminium zinc solution temperature are: 550-650 ℃, fusing time is in induction heater: 12-18 days, stand-by.
B: the hot-dip coating aluminium-zinc alloy steel-sheet is produced:
1. get the cold rolling coil steel plate and be placed on and carry out electrochemical skimming treatment in the solution tank, put into water and solid caustic soda in the solution tank and make scale solution, the solution weight percentage concentration is: 3-5%, and solution temperature is: 60-80 ℃, degreasing time is: 30-120 rice/minute;
2. thermal treatment: the cold-rolled steel sheet after the above-mentioned electrochemical degreasing is being heat-treated in the carbon stove continuously;
(1). cold-rolled steel sheet is carried out thermal pretreatment earlier: preheating temperature is: 450-550 ℃, be warm up time: 30-120 rice/minute;
(2). will carry out fast thermal treatment after the above-mentioned cold-rolled steel sheet thermal pretreatment; Fast thermal treatment temp is: 680-720 ℃, the fast hot time is: 30-120 rice/minute;
(3). with above-mentioned fast heat treated cold-rolled steel sheet through the blower fan deepfreeze: cooling temperature is: 460-500 ℃, cooling time are: 30-120 rice/minute;
(4). above-mentioned stand-by aluminium zinc solution is coated in uniformly on the cold-rolled steel sheet pros and cons of process blower fan deepfreeze;
(5). the above-mentioned aluminium-zinc alloy steel sheet that carries out coating is carried out polishing under the polishing machine; Polishing machine pressure is: 80-160 ton, machine speed are: 30-120 rice/minute;
(6). will carry out that aluminium-zinc alloy steel sheet that polishing crosses carries out surface treatment and add chromic acid in the purifying trough inner water is that refined solution carries out purification process; The refined solution temperature is: normal temperature, and the refined solution concentration expressed in percentage by weight is: 30-40%, the purifying time is: 30-120 rice/minute;
(7). above-mentioned hot-dip coating aluminium-zinc alloy plate through surface treatment and purification process is dried processing again; Oven temperature is: 60-80 ℃, drying time is: 30-120 rice/minute;
(8). will carry out hydraulic cutter through the hot-dip coating aluminium-zinc alloy steel plate that oven dry is handled at last is finished product.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CNA2003101062613A CN1542158A (en) | 2003-11-08 | 2003-11-08 | Hot-dip aluminium zinc alloy steel plate and its preparing process |
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| CNA2003101062613A CN1542158A (en) | 2003-11-08 | 2003-11-08 | Hot-dip aluminium zinc alloy steel plate and its preparing process |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101180414B (en) * | 2005-04-05 | 2010-06-09 | 布卢斯科普钢铁有限公司 | Metal-coated steel strip |
| CN101664868B (en) * | 2008-09-03 | 2011-10-05 | 烨联钢铁股份有限公司 | Method for manufacturing stainless steel ultrathin white steel coil |
| CN102348824A (en) * | 2009-01-09 | 2012-02-08 | Posco公司 | Aluminum-plated steel sheet having superior corrosion resistance, hot press formed product using the same, and method for production thereof |
| CN102400078A (en) * | 2011-12-06 | 2012-04-04 | 无锡银荣板业有限公司 | Method for producing continuous hot-dip aluminum-zinc-boron alloy steel plates |
| CN102409278A (en) * | 2011-12-06 | 2012-04-11 | 无锡银荣板业有限公司 | Production method of continuous-hot-dipped aluminum-silicon-titanium-boron-coated alloy steel plate |
| CN102424942A (en) * | 2011-12-06 | 2012-04-25 | 无锡银荣板业有限公司 | Production method for continuous hot-dip aluminum-silicon-zinc-boron-titanium allay-plated steel plate |
| CN101352946B (en) * | 2007-07-23 | 2013-02-06 | 宝山钢铁股份有限公司 | Hot-dip aluminizing zincium steel plate/belt for deep drawing and method for producing the same |
| CN101952477B (en) * | 2008-02-25 | 2013-07-10 | 安赛乐米塔尔研究与发展有限责任公司 | Method for coating a metal strip and equipment for implementing said method |
| CN109750146A (en) * | 2019-01-15 | 2019-05-14 | 象山华鹰塑料工程有限公司 | A kind of automotive window panel hot-dip aluminizing alloy-steel plate manufacturing process |
-
2003
- 2003-11-08 CN CNA2003101062613A patent/CN1542158A/en active Pending
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101180414B (en) * | 2005-04-05 | 2010-06-09 | 布卢斯科普钢铁有限公司 | Metal-coated steel strip |
| CN101352946B (en) * | 2007-07-23 | 2013-02-06 | 宝山钢铁股份有限公司 | Hot-dip aluminizing zincium steel plate/belt for deep drawing and method for producing the same |
| CN101952477B (en) * | 2008-02-25 | 2013-07-10 | 安赛乐米塔尔研究与发展有限责任公司 | Method for coating a metal strip and equipment for implementing said method |
| US11313023B2 (en) | 2008-02-25 | 2022-04-26 | Arcelormittal | Equipment for coating a metal strip |
| CN101664868B (en) * | 2008-09-03 | 2011-10-05 | 烨联钢铁股份有限公司 | Method for manufacturing stainless steel ultrathin white steel coil |
| CN102348824A (en) * | 2009-01-09 | 2012-02-08 | Posco公司 | Aluminum-plated steel sheet having superior corrosion resistance, hot press formed product using the same, and method for production thereof |
| CN102400078A (en) * | 2011-12-06 | 2012-04-04 | 无锡银荣板业有限公司 | Method for producing continuous hot-dip aluminum-zinc-boron alloy steel plates |
| CN102409278A (en) * | 2011-12-06 | 2012-04-11 | 无锡银荣板业有限公司 | Production method of continuous-hot-dipped aluminum-silicon-titanium-boron-coated alloy steel plate |
| CN102424942A (en) * | 2011-12-06 | 2012-04-25 | 无锡银荣板业有限公司 | Production method for continuous hot-dip aluminum-silicon-zinc-boron-titanium allay-plated steel plate |
| CN109750146A (en) * | 2019-01-15 | 2019-05-14 | 象山华鹰塑料工程有限公司 | A kind of automotive window panel hot-dip aluminizing alloy-steel plate manufacturing process |
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