CN105671605A - Manufacturing method for single-side-aluminum-coated steel plates - Google Patents
Manufacturing method for single-side-aluminum-coated steel plates Download PDFInfo
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- CN105671605A CN105671605A CN201511010432.1A CN201511010432A CN105671605A CN 105671605 A CN105671605 A CN 105671605A CN 201511010432 A CN201511010432 A CN 201511010432A CN 105671605 A CN105671605 A CN 105671605A
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- aluminum
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- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D5/00—Electroplating characterised by the process; Pretreatment or after-treatment of workpieces
- C25D5/02—Electroplating of selected surface areas
- C25D5/028—Electroplating of selected surface areas one side electroplating, e.g. substrate conveyed in a bath with inhibited background plating
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Abstract
The invention discloses a manufacturing method for single-side-aluminum-coated steel plates. The method comprises the following steps that two steel plates are overlaid up and down; gaps located on the edges of joint surfaces of the two steel plates are sealed; the steel plates are placed in an electrolyte solution for electroplating; and sealing materials on the side faces of the steel plates are separated to obtain the two single-side-aluminum-coated steel plates. Before the electroplating step, the step that the surfaces to be coated with aluminum of the steel plates are cleaned is further included. According to the manufacturing method, the two steel plates are connected in an overlaid mode, aluminizing is conducted after the gaps between the joint surfaces of the two steel plates are sealed, and the two single-side-aluminum-coated steel plates are finally obtained after separation; and the production efficiency is doubled, the procedures are simple, and no pollution is caused.
Description
Technical field
The present invention relates to the manufacture method of a kind of one side Aluminum-coated steel, belong to metallic composite and manufacture field.
Background technology
One side covers the steel plate of aluminum and has the good mechanical property of corrosion-resistant, the heat conduction of aluminium alloy, electric conductivity and steel concurrently, there is the advantage of its uniqueness, all it is widely used at multiple fields: compared with one-side galvanized steel plate, corrosion resistance is more than 5 times of galvanized sheet, is widely used in the fields such as generating, automobile, aviation, chemical industry, cooker and household electrical appliances; When the identical corrosion resistance of same substrate, aluminium lamination is more thin and light than aluminizing zinc layers, be used in cooling group of motors on heat exchanger heat conductivity good, the heat conductivity of aluminum is well more a lot of than the heat conductivity of steel; With aluminum-steel composite board with make thermoelectricity air cooling system there is excellent brazing property, higher intensity and excellent decay resistance, with aluminum steel composite material make air cooling system substitute traditional water-cooling system can save substantial amounts of water resource.
The production method of aluminum steel composite metal plate, mainly includes traditional roll-bonding method, Explosion composite method, powder metallurgic method, hot aluminizing and casts composite algorithm.
Rolling compund is to produce the wide variety of technology of composite metal plate, reaches to combine by rolling the new metal interface contact produced. The method needs very big reduction ratio, it is desirable to milling train is huge, and equipment investment is big.
Explosion composite technology is a kind of solid-solid phase complex method, it is widely used in manufacturing composite metal plate, its principle be the high speed of explosive ignite with under percussion by together with two or more metal large-area welding, advantage is in that properties of product are stable, and major part metal material can realize Explosion composite. Shortcoming is in that to be not suitable for manufacturing Film laminated plate, and aluminum steel interface undulate, interface topography are wayward.
First mother metal surface is carried out pretreatment by powder metallurgic method, configures powder as required, then powder uniformly overlays on mother metal surface, it is carried out high temperature sintering, smooth obtains composite plate through rolling after. It is characterized in that and changes liquid phase fusing into powder metallurgy, it is adaptable to the production of bearing alloy band. Shortcoming is in that production process expends mass energy, environment causes very big pollution, powder metallurgy cambium layer fine and close not.
Casting composite algorithm is that molten metal liquid is cast on the motherboard carrying out surface treatment in advance, it is achieved interface solidification compound.But the method can not produce band, and there is motherboard oxidation, affects interface bond strength.
The high-frequency induction brazing method being recently proposed, realizes aluminum and the combination of two kinds of different metal materials of steel by composite welding agent. The method has the advantages such as energy resource consumption is few, production efficiency is high, combined strength bination is big compared with composite rolling, but needs in process of production to use brazing flux in a large number, and brazing flux itself is poisonous, easily precipitates out at composite strip surface and interface, not easy-clear, has corrosivity; And the composite plate interface bond strength that obtains is low, utilize the method to be difficult to produce the aluminum steel composite material that aluminium lamination is relatively thin simultaneously.
And the method for another kind single-sided aluminum-plated steel strip, it being aluminize the two-sided of steel after the one of steel whole topcoating is covered prevention oxidant layer, need to be ground off by burnisher the alclad without aluminizing and trapping layer after aluminizing, not only complex procedures, cost is high, and production efficiency is low.
Summary of the invention
In order to overcome the defect of above-mentioned prior art, the present invention proposes the manufacture method of a kind of one side Aluminum-coated steel, and manufacturing process is simple, production efficiency is high, pollution-free.
The present invention is attained in that by following technical solution
The manufacture method of a kind of one side Aluminum-coated steel, comprises the steps:
Take two block plate upper-lower overlappings to place;
Seal the gap being positioned at two block plate binding face edges;
It is placed in electrolyte electroplating aluminum;
Separate the encapsulant of steel plate side, obtain two pieces of one side Aluminum-coated steel;
Wherein, before plating step, also include the step on the aluminum surface to be covered of clean steel.
The step on the aluminum surface to be covered of the clean steel described in manufacture method of the present invention, as long as before being implemented in electrolysis step, do not limit concrete order: cleaning can carry out before overlapping the mutual alignment of steel plate, is then overlapped by two block plates as binding face on the surface do not cleaned; Also can carry out before above-mentioned sealing step or after sealing step, clean the upper surface of aluminum surface to be covered upper steel plate and the lower surface of lower steel plate.
Two block plates are stacked and link together by the present invention, aluminize after sealing the gap between the two binding face, finally give two pieces of one side Aluminum-coated steel after separating, and production efficiency doubles. Consider to save material, the method generally taking the steel plate present invention two block-shaped, size is identical covers aluminum, even if the method for two block plate shapes, the different present invention of could be used that of size realizes one side and covers aluminum: as long as after finally removing the edge that two block plates are not fitted, two pieces of one side Aluminum-coated steel can be obtained. Therefore, the present invention stacks the shape of steel plate and big I need not do considered critical to two pieces.
As preferred embodiment, the step of the upper surface of cleaning upper steel plate and the lower surface of lower steel plate can be:
Remove upper surface and the dirt of lower surface attachment of lower steel plate, the impurity of upper steel plate, and adopt organic solvent and/or inorganic solvent that the upper surface of upper steel plate and the lower surface of lower steel plate are carried out degreasing degreasing process.
And in order to increase the bonded area of composition metal, follow-up electroplating aluminum is easier to, improve the bond strength of two kinds of metals, the present invention is after the upper surface of cleaning upper steel plate and the lower surface step of lower steel plate, also include activation processing: the upper surface of polishing upper steel plate and the lower surface of lower steel plate, to increase the surface roughness on the aluminum surface to be covered of steel plate. Surface roughness can increase to Ra1.6～Ra3.2.As long as the activation step of the present invention is after cleaning and carries out before plating step, but treat, in order to avoid sealing step, the pollution covering aluminum surface, generally can carry out preferably in after sealing step.
As preferably embodiment, above-mentioned sealing be positioned at the gap at two block plate binding face edges step particularly as follows:
Being positioned at the gap place soldering at binding face edge between two block plates, the gap at the two binding face edge is fully sealed by the weld seam that brazing filler metal melts is formed.
As another preferably embodiment, above-mentioned sealing is positioned at the step in the gap at two block plate binding face edges particularly as follows: apply described gap with synthetic resin, and the gap at two block plate binding face edges is fully sealed by synthetic resin.
For with brazing mode or with synthetic resin application pattern seal steel plate, two block plates are removed by the mode that can use cutting with encapsulant, obtain two pieces of one sides after separation and cover the steel plate of aluminum: adopt if the mechanical system such as cutting machine, plate shearing machine is by the solder (i.e. weld seam) of two block plate sides, or coat of synthetic resin is removed, more thorough in order to remove encapsulant, the present invention can also cut together with the side of steel plate and remove.
When steel plate is thicker be difficult to cut time, it would however also be possible to employ the mode of polishing by two block plates with encapsulant (weld seam or coat of synthetic resin) remove.
When needing, the steel plate aluminized is relatively thin, behind the gap sealing binding face edge, can be placed in electrolyte before plating described, is rolled between the upper surface of upper steel plate and the lower surface of lower steel plate by two block plates to leave the coil of strip in space. The steel plate of rolling is positioned in electrolyzer, it is possible to more make full use of the space of electrolyzer, so, the more steel plate of each electrolysis, improve the efficiency of electrowinning process.
It is placed in electrolyte after plating above-mentioned, the steel plate after aluminizing is pulled out from electrolyzer, is placed in air drying.
Manufacture method disclosed by the invention, is undertaken covering aluminum by the fixing rear two sides of bimetallic steel plate laminating, can obtain two pieces of one side Aluminum-coated steel after being separated by trimming afterwards, and not by the restriction of steel plate thickness, operation is simple, and production efficiency is high, and pollution-free.
Accompanying drawing explanation
Fig. 1 is the manufacturing flow chart of one embodiment of the invention;
Fig. 2 A is schematic diagram before steel plate of the present invention separates;
Fig. 2 B is schematic diagram after steel plate of the present invention separates.
Detailed description of the invention
The manufacture method of a kind of one side Aluminum-coated steel of disclosure, comprises the steps:
Take two block plate upper-lower overlappings to place; Seal the gap being positioned at two block plate binding face edges;
It is placed in electrolyte and electroplates; Separate the encapsulant of steel plate side, obtain two pieces of one side Aluminum-coated steel; Wherein, before plating step, also include the step on the aluminum surface to be covered of clean steel.
It should be noted that the step on the aluminum surface to be covered of the clean steel described in manufacture method of the present invention, as long as before being implemented in electrolysis step, do not limit concrete order. Cleaning can carry out before overlapping the mutual alignment of steel plate, is then overlapped by two block plates as binding face on the surface do not cleaned; Also can carry out before sealing step or after sealing step: clean the upper surface of aluminum surface to be covered upper steel plate and the lower surface of lower steel plate.
Fig. 1 is the manufacturing flow chart of one embodiment of the invention, for manufacturing process shown in Fig. 1, below the manufacture method of the present invention is illustrated, and the manufacture method of the present invention comprises the steps:
Take two block plate upper-lower overlappings to place, namely two block plates arranged one on the other, above the upper surface laminating of the lower surface of steel plate and following steel plate.If the shape of two block plates is identical with size, then the side of upper and lower steel plate is concordant, forms the rectangular shape with four sides after stacking, and the upper and lower surface of cuboid is the surface of aluminum to be covered.
Will be located in gap sealing on the four of cuboid side, two block plate binding face edges: the gap at two block plate binding face edges is fully sealed; So, when being placed in electrolyte by steel plate, electrolyte will not enter the gap between two block plate binding faces, and the binding face of steel plate would not be coated to aluminum.
The step of cleaning can be specially the dirt of lower surface attachment of upper surface and the lower steel plate removing upper steel plate, impurity, and adopt organic solvent and/or inorganic solvent, such as basic mineral solvents such as ethanol, acetone and other organic solvent or sodium hydroxide, the upper surface of upper steel plate and the lower surface of lower steel plate are carried out degreasing degreasing process.
And in order to increase the bonded area of composition metal, follow-up electroplating aluminum is easier to, improve the bond strength of two kinds of metals, the present invention is after the upper surface of cleaning upper steel plate and the lower surface step of lower steel plate, also include activation processing: the upper surface of polishing upper steel plate and the lower surface of lower steel plate, increase surface roughness. Surface roughness is Ra1.6～Ra3.2. As long as the activation step of the present invention is after cleaning and carries out before plating step, but treat, in order to avoid sealing step, the pollution covering aluminum surface, generally can carry out after sealing step.
The mode sealed is not unique, can adopt welded seal, it is possible to adopt the sealed materials such as coating synthetic resin to seal. Specifically, the gap place soldering at binding face edge can be positioned between two block plates, the gap at the two binding face edge is fully sealed by the weld seam that brazing filler metal melts is formed, it is also possible to synthetic resin applies described gap, and the gap at two block plate binding face edges is fully sealed by synthetic resin.
When needing, the steel plate aluminized is relatively thin, behind the gap sealing binding face edge, can be placed in electrolyte before plating described, is rolled between the upper surface of upper steel plate and the lower surface of lower steel plate by two block plates to leave the coil of strip in space. The steel plate of rolling is positioned in electrolyzer, it is possible to more make full use of the space of electrolyzer, so, the more steel plate of each electrolysis, improve the efficiency of electrowinning process.
Steel plate after sealing can be put into electrolyzer and carry out electrolysis and cover aluminum, and the thickness covering aluminum can determine by controlling the time of electrolysis. In being placed in electrolyte after plating, the steel plate after aluminizing is pulled out from electrolyzer, is placed in air drying.
After plating, the cross-sectional area of steel plate is as shown in Figure 2 A, and wherein 1 is upper steel plate, and 2 is lower steel plate, and 3 is to be in communication with the outside the sealing material of gap sealing between upper steel plate and lower steel plate, and such as weld seam or synthetic resin coating, 4 is the alclad at upper and lower surface of steel plate.
Being removed by the sealing material of cuboid side attachment after electrolysis, can be separated by upper and lower two steel plates, obtain two pieces of one sides and cover the steel plate of aluminum, the steel plate state after separation is as shown in Figure 2 B.
The method separated is not unique yet, can adopt cutting equipment that the side of steel plate or coil of strip is cut; Also with polisher, the side of steel plate or coil of strip can be polished, remove the encapsulant such as weld seam or coat of synthetic resin with this.
The manufacture method of the present invention is not by restrictions such as the shape of Aluminum-coated steel, thickness. As long as electrolysis installation allows, the present invention can double-efficiency, produce the one side Aluminum-coated steel of high bond strength.
Manufacturing process shown in Fig. 1 of the present invention, is only a preferred embodiment of the present invention, the sequence of steps of manufacture method can not uniquely, as surface cleaning can before overlapping, overlapping-seal between or seal after carry out;As long as activation step is implemented between cleaning and plating. What present disclosure was touched upon is exemplary embodiment, when the protection domain defined without departing from claims, it is possible to each embodiment of the application is made various changes and modifications. Therefore, all this type of that described embodiment is intended to drop in the protection domain of appended claims changes, revises and deformation. Additionally, unless the context outside indication, the word occurred in the singular includes plural form, and vice versa. It addition, unless stated otherwise, then all or part of of any embodiment uses in combinations with all or part of of any other embodiments.
Claims (10)
1. the manufacture method of an one side Aluminum-coated steel, it is characterised in that comprise the steps:
Take the overlapping placement up and down of two block plates;
Seal the gap being positioned at two block plate binding face edges;
Plating;
Separate the encapsulant of steel plate side;
Wherein, before plating step, also include the step on the aluminum surface to be covered of clean steel.
2. the manufacture method of one side Aluminum-coated steel as claimed in claim 1, it is characterised in that the step on the aluminum surface to be covered of described clean steel is:
Remove the dirt of aluminum surface attachment to be covered of steel plate, impurity, and adopt organic solvent and/or inorganic solvent that the aluminum surface to be covered of steel plate is carried out degreasing degreasing process.
3. the manufacture method of one side Aluminum-coated steel as claimed in claim 1, it is characterised in that after the aluminum surface step to be covered of clean steel, also include activation processing:
The aluminum surface to be covered of polishing steel plate, to increase the surface roughness on the aluminum surface to be covered of steel plate.
4. the manufacture method of one side Aluminum-coated steel as claimed in claim 3, it is characterised in that described surface roughness increases to Ra1.6～Ra3.2.
5. the manufacture method of one side Aluminum-coated steel as claimed in claim 1, it is characterised in that the step in the gap that described sealing is positioned at two block plate binding face edges is:
Being positioned at the gap place soldering at binding face edge between two block plates, the gap at the two binding face edge is fully sealed by weld seam.
6. the manufacture method of one side Aluminum-coated steel as claimed in claim 1, it is characterised in that the step in the gap that described sealing is positioned at two block plate binding face edges is:
Applying described gap with synthetic resin, the gap at two block plate binding face edges is fully sealed by synthetic resin.
7. the manufacture method of the one side Aluminum-coated steel as described in claim 5 or 6, it is characterised in that the step of the encapsulant of described separation steel plate side is:
Adopt cutting mode by two block plates with encapsulant remove.
8. the manufacture method of the one side Aluminum-coated steel as described in claim 5 or 6, it is characterised in that the step of the encapsulant of described separation steel plate side is:
Adopt polishing mode by two block plates with encapsulant remove.
9. two block plates are rolled between the upper surface of upper steel plate and the lower surface of lower steel plate to leave the coil of strip in space by the manufacture method of one side Aluminum-coated steel as claimed in claim 1, it is characterised in that before described plating step.
10. the manufacture method of one side Aluminum-coated steel as claimed in claim 1, it is characterised in that after described plating step,
Steel plate after aluminizing is placed in air drying.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201511010432.1A CN105671605A (en) | 2015-12-28 | 2015-12-28 | Manufacturing method for single-side-aluminum-coated steel plates |
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| CN201511010432.1A CN105671605A (en) | 2015-12-28 | 2015-12-28 | Manufacturing method for single-side-aluminum-coated steel plates |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109719404A (en) * | 2019-01-15 | 2019-05-07 | 广东科翔电子科技有限公司 | A kind of method of IC support plate laser drill |
| CN113481505A (en) * | 2021-07-07 | 2021-10-08 | 南京科技职业学院 | Blind plate manufacturing method |
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