CN102189382B - Preparation method of embedded copper-aluminum-copper composite board - Google Patents
Preparation method of embedded copper-aluminum-copper composite board Download PDFInfo
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- CN102189382B CN102189382B CN 201110108050 CN201110108050A CN102189382B CN 102189382 B CN102189382 B CN 102189382B CN 201110108050 CN201110108050 CN 201110108050 CN 201110108050 A CN201110108050 A CN 201110108050A CN 102189382 B CN102189382 B CN 102189382B
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Abstract
The invention discloses a preparation method of an embedded copper-aluminum-copper composite board in the technical field of composite material. The method comprises the following steps: performing surface cleaning pretreatment on copper alloy and industrial pure aluminum respectively; grooving the surfaces of the copper alloy and the industrial pure aluminum, butting and flattening, and rolling to obtain a three-layer composite board; and finally performing thermal treatment to obtain the embedded copper-aluminum-copper composite board. According to the invention, a groove-shaped concave/convex surface is formed by preprocessing; three layers of board are overlapped to form embedded assembly butt joint, and the contact area between a board and a strip is increased; and mechanical embedding is formed in the subsequent rolling process so that the interface combination strength of the composite board can be maximally improved by nearly 5 times as compared with the direct plane butt-joint rolling method.
Description
Technical field
That the present invention relates to is a kind of sheet alloy and preparation method of technical field of composite materials, specifically a kind of preparation method of embedded copper-aluminum-copper composite board.
Background technology
Copper and alloy thereof have good conduction, heat conduction, anti-corrosion, anti-microbial property, have simultaneously surface-brightening, the advantage such as attractive in appearance concurrently; But copper and alloy density thereof are large, and copper shortage of resources, the price of China are higher.On the other hand, aluminium and alloy thereof have the advantages such as density is low, aboundresources, low price, but its conduction, heat conduction, the performance such as corrosion-resistant, wear-resisting are poor than copper.Copper aluminum composite material is as a kind of advanced composite material (ACM), copper or copper alloy and aluminum or aluminum alloy are composited by certain preparation technology, the advantages such as light weight of the advantages such as the conductive and heat-conductive rate that has simultaneously copper is high, contact resistance is low and aluminium have very wide application prospect in fields such as electronics, electric power, electrical equipment, metallurgy, machinery, automobile and daily necessitiess.
At present, the method for preparing the clad metal sheet material mainly comprises: built-up welding, and explosive welding, extruding, rolling, friction rabbling welding, diffusion welding (DW) etc.In above-mentioned preparation method, rolling low with cost, the efficient advantages of higher becomes a kind of processing method that has the large-scale production copper aluminum composite material of potentiality.1956, the Metal and Control Cop of the U.S. proposed the three-steps process that rolling prepares composite, i.e. and surface treatment-rolling is compound-and annealing strengthening processes.
Yet, in copper/aluminium/copper composite board operation of rolling, because copper aluminum metal percentage elongation and resistance of deformation differ larger, belong to asymmetric evenly rolling, its deformation rule more complicated.In addition, for copper aluminium system, be easy in the heat treatment process at interface formation intermetallic compound (Al
4Cu
9, Al
3Cu
4, AlCu, Al
2Cu), cause the decline of boundary strength, limited its application.
Find through the retrieval to prior art, the Chinese invention patent publication number is CN1431095A, denomination of invention is the processing method of a kind of metallic composite panel or band, this technique is opened an embeded slot that connects at substrate one end faying face, on wrapper sheet one end faying face, a chimeric projection is set accordingly, then fit together reserving the space of setting between wrapper sheet projection and the substrate caulking groove, the other end is fastenedly connected.This technique has improved processing stability, but the prior art can not effectively solve the low problem of copper aluminium compound interface adhesion.
Summary of the invention
The present invention is directed to the prior art above shortcomings, a kind of preparation method of embedded copper-aluminum-copper composite board is provided, by carrying out preprocessing to rolling header board (band) surface, form the channel form convex-concave surface, three ply board stacks the embedded assembling docking of rear formation, increase the contact area between plate-band, and it is chimeric to form machinery in subsequently the operation of rolling, makes composite plate interface bond strength and the direct plane rolling maximum of comparing of docking can improve nearly 5 times.
The present invention is achieved by the following technical solutions, the present invention is by after carrying out the cleaning surfaces preliminary treatment respectively with copper alloy and commercial-purity aluminium, process and the docking pressing at copper alloy and commercial-purity aluminium surface fluting, through the rolling three-layer composite board that obtains, make embedded copper-aluminum-copper composite board finally by heat treatment.
Described cleaning surfaces preliminary treatment refers to:
Copper alloy was embathed in 10～20% sulfuric acid solution 4 minutes, remove the oxide-film on surface, with clear water flushing surface, dry up, then with roller brushes polishing surface;
With the 250 ℃ of insulations 30 minutes in drying baker of annealed state 1050 commercial-purity aluminiums, remove surface and oil contaminant, then with roller brushes polishing surface.
Described copper alloy is banded structure, is made by the HNi65-5 nickel brass;
Described commercial-purity aluminium is platy structure.
Described fluting is processed and is referred to: utilize stainless steel knife to go out equally distributed groove at copper alloy and commercial-purity aluminium Surface Machining, depth of groove is 0.1～0.5mm, width is 0.5～1.0mm, blows the chip of adhesion off, forms convex-concave surface at copper alloy and commercial-purity aluminium;
Described docking flattens and refers to: the commercial-purity aluminium after will slotting embeds copper alloy, then flattens in advance with hydraulic press.
Arbitrary realization in the following dual mode of described rolling employing:
A) adopt milling train to carry out a time, irreversible cold rolling, mill speed is 0.5～5m/s, the rolling reduction ratio 40～75% of a time;
B) will dock and seal after commercial-purity aluminium after flattening and copper alloy place aluminium foil bag and pour argon gas, in box heat treatment furnace, be heated to 350～500 ℃, be incubated 30～180 minutes, after the taking-up, namely send into milling train, mill speed is 0.5～5m/s, and the rolling reduction ratio of a time is 40～75%.
Described heat treatment refers to: place vacuum drying oven 300～450 ℃ of insulations 30～180 minutes three-layer composite board, smooth at last and cut the limit and make embedded copper-aluminum-copper composite board.
Description of drawings
Fig. 1 is flow chart of the present invention.
Fig. 2 is that embodiment copper alloy, commercial-purity aluminium surface fluting are processed and the docking schematic diagram.
The specific embodiment
The below elaborates to embodiments of the invention, and present embodiment is implemented under take technical solution of the present invention as prerequisite, provided detailed embodiment and concrete operating process, but protection scope of the present invention is not limited to following embodiment.
Embodiment 1
As shown in Figure 1, present embodiment may further comprise the steps:
Step 1: surface pretreatment
With 0.8 * 50 * 150mm
3Soft attitude HNi65-5 nickel brass in 10～20% sulfuric acid solution, embathed 4 minutes, remove the oxide-film on surface, with clear water flushing surface, dry up.With roller brushes polishing surface.
With 3 * 50 * 150mm
3The 250 ℃ of insulations 30 minutes in drying baker of annealed state 1050 commercial-purity aluminiums, remove surface and oil contaminant.With roller brushes polishing surface.
Step 2: copper alloy, commercial-purity aluminium surface fluting are processed, and docking flattens;
A) copper alloy belt is fixed, utilized stainless steel knife to go out equally distributed groove in the copper alloy belt Surface Machining, such as accompanying drawing 2 (a), groove depth 0.1mm, groove width 0.5mm blows the chip of adhesion off, forms convex-concave surface at copper alloy belt;
B) aluminium sheet is fixed, utilized stainless steel knife to process equally distributed groove in surface of aluminum plate, such as accompanying drawing 2 (a), groove depth 0.1mm, groove width 0.5mm blows the chip of adhesion off, forms corresponding convex-concave surface at aluminium sheet;
The aluminium sheet with convex-concave surface that c) will process embeds the copper alloy belt with corresponding female nonreentrant surface, realizes the docking of copper aluminium sheet, then flattens in advance with hydraulic press.
Step 3: rolling
To send into milling train, carry out a time, irreversible cold rolling copper/aluminium of connecting/copper three ply board.Mill speed 0.5m/s, the rolling reduction ratio 75% of a time.
Step 4: roll post processing
Place 300 ℃ of vacuum drying ovens to be incubated 180 minutes three-layer composite board after rolling.With equate treatment conditions under pair rolling method rolling composite plate compare, boundary strength has improved nearly 2 times.
Embodiment 2
As shown in Figure 1, present embodiment may further comprise the steps:
Step 1: surface pretreatment
With 2 * 50 * 150mm
3Soft attitude HNi65-5 nickel brass in 10～20% sulfuric acid solution, embathed 4 minutes, remove the oxide-film on surface, with clear water flushing surface, dry up.With roller brushes polishing surface.
With 15 * 50 * 150mm
3The 250 ℃ of insulations 30 minutes in drying baker of annealed state 1050 commercial-purity aluminiums, remove surface and oil contaminant.With roller brushes polishing surface.
Step 2: copper alloy, commercial-purity aluminium surface fluting are processed, and docking flattens;
A) copper alloy belt is fixed, utilized stainless steel knife to go out equally distributed groove in the copper alloy belt Surface Machining, such as accompanying drawing 2 (a), groove depth 0.5mm, groove width 1mm blows the chip of adhesion off, forms convex-concave surface at copper alloy belt;
B) aluminium sheet is fixed, utilized stainless steel knife to process equally distributed groove in surface of aluminum plate, such as accompanying drawing 2 (a), groove depth 0.5mm, groove width 1mm blows the chip of adhesion off, forms corresponding convex-concave surface at aluminium sheet;
The aluminium sheet with convex-concave surface that c) will process embeds the copper alloy belt with corresponding female nonreentrant surface, realizes the docking of copper aluminium sheet, then flattens in advance with hydraulic press.
Step 3: rolling
Copper/aluminium/capillary copper blank is packed in the aluminium foil bag, pour argon gas, sealing is heated to 350 ℃ in box heat treatment furnace, be incubated 180 minutes, after the taking-up, namely sends into milling train, mill speed 5m/s, the rolling reduction ratio 40% of a time.Do not roll after-baking, with equate treatment conditions under pair rolling method rolling composite plate compare, boundary strength has improved 3 times.
Embodiment 3
As shown in Figure 1, present embodiment may further comprise the steps:
Step 1: surface pretreatment
With 1.5 * 50 * 150mm
3Soft attitude HNi65-5 nickel brass in 10～20% sulfuric acid solution, embathed 4 minutes, remove the oxide-film on surface, with clear water flushing surface, dry up.With roller brushes polishing surface.
With 8 * 50 * 150mm
3The 250 ℃ of insulations 30 minutes in drying baker of annealed state 1050 commercial-purity aluminiums, remove surface and oil contaminant.With roller brushes polishing surface.
Step 2: copper alloy, commercial-purity aluminium surface fluting are processed, and docking flattens;
A) copper alloy belt is fixed, utilized stainless steel knife to go out equally distributed groove in the copper alloy belt Surface Machining, such as accompanying drawing 2 (b), groove depth 0.3mm, groove width 0.8mm blows the chip of adhesion off, forms convex-concave surface at copper alloy belt;
B) aluminium sheet is fixed, utilized stainless steel knife to process equally distributed groove in surface of aluminum plate, such as accompanying drawing 2 (b), groove depth 0.3mm, groove width 0.8mm blows the chip of adhesion off, forms corresponding convex-concave surface at aluminium sheet;
The aluminium sheet with convex-concave surface that c) will process embeds the copper alloy belt with corresponding female nonreentrant surface, realizes the docking of copper aluminium sheet, then flattens in advance with hydraulic press.
Step 3: rolling
To send into milling train, carry out a time, irreversible cold rolling copper/aluminium of connecting/copper three ply board.Mill speed 3m/s, the rolling reduction ratio 54% of a time.
Step 4: roll post processing
Place 450 ℃ of vacuum drying ovens to be incubated 30 minutes three-layer composite board after rolling.With equate treatment conditions under pair rolling method rolling composite plate compare, boundary strength has improved nearly 2 times.
Embodiment 4
As shown in Figure 1, present embodiment may further comprise the steps:
Step 1: surface pretreatment
With 0.8 * 50 * 150mm
3Soft attitude HNi65-5 nickel brass in 10～20% sulfuric acid solution, embathed 4 minutes, remove the oxide-film on surface, with clear water flushing surface, dry up.With roller brushes polishing surface.
With 8 * 50 * 150mm
3The 250 ℃ of insulations 30 minutes in drying baker of annealed state 1050 commercial-purity aluminiums, remove surface and oil contaminant.With roller brushes polishing surface.
Step 2: copper alloy, commercial-purity aluminium surface fluting are processed, and docking flattens;
A) copper alloy belt is fixed, utilized stainless steel knife to go out equally distributed groove in the copper alloy belt Surface Machining, such as accompanying drawing 2 (b), groove depth 0.15mm, groove width 0.8mm blows the chip of adhesion off, forms convex-concave surface at copper alloy belt;
B) aluminium sheet is fixed, utilized stainless steel knife to process equally distributed groove in surface of aluminum plate, such as accompanying drawing 2 (b), groove depth 0.15mm, groove width 0.8mm blows the chip of adhesion off, forms corresponding convex-concave surface at aluminium sheet;
The aluminium sheet with convex-concave surface that c) will process embeds the copper alloy belt with corresponding female nonreentrant surface, realizes the docking of copper aluminium sheet, then flattens in advance with hydraulic press.
Step 3: rolling
Copper/aluminium/capillary copper blank is packed in the aluminium foil bag, pour argon gas, sealing is heated to 500 ℃ in box heat treatment furnace, be incubated 30 minutes, after the taking-up, namely sends into milling train, mill speed 1m/s, the rolling reduction ratio 63% of a time.Do not roll after-baking, with equate treatment conditions under pair rolling method rolling composite plate compare, boundary strength has improved 5 times.
Claims (1)
1. the preparation method of an embedded copper-aluminum-copper composite board, it is characterized in that, after copper alloy and commercial-purity aluminium are carried out the cleaning surfaces preliminary treatment respectively, process and the docking pressing at copper alloy and commercial-purity aluminium surface fluting, through the rolling three-layer composite board that obtains, make embedded copper-aluminum-copper composite board finally by heat treatment; Described fluting is processed and referred to: utilize stainless steel knife to go out equally distributed groove at copper alloy and commercial-purity aluminium Surface Machining, depth of groove is 0.1 ~ 0.5mm, and width is 0.5 ~ 1.0mm, forms convex-concave surface at copper alloy and commercial-purity aluminium;
Described cleaning surfaces preliminary treatment refers to:
Copper alloy was embathed in 10 ~ 20% sulfuric acid solution 4 minutes, remove the oxide-film on surface, with clear water flushing surface, dry up, then with roller brushes polishing surface;
With the 250 ℃ of insulations 30 minutes in drying baker of annealed state 1050 commercial-purity aluminiums, remove surface and oil contaminant, then with roller brushes polishing surface;
Described docking flattens and refers to: the commercial-purity aluminium after will slotting embeds copper alloy, then flattens in advance with hydraulic press.
Arbitrary realization in the following dual mode of described rolling employing:
A) adopt milling train to carry out a time, irreversible cold rolling, mill speed is 0.5 ~ 5m/s, the rolling reduction ratio 40 ~ 75% of a time;
B) will dock and seal after commercial-purity aluminium after flattening and copper alloy place aluminium foil bag and pour hydrogen, in box heat treatment furnace, be heated to 350 ~ 500 ℃, be incubated 30 ~ 180 minutes, after the taking-up, namely send into milling train, mill speed is 0.5 ~ 5m/s, and the rolling reduction ratio of a time is 40 ~ 75%;
Described heat treatment refers to: place vacuum drying oven 300 ~ 450 ℃ of insulations 30 ~ 180 minutes three-layer composite board, smooth at last and cut the limit and make embedded copper-aluminum-copper composite board;
Described copper alloy is banded structure, is made by HNi 65-5 nickel brass, and described commercial-purity aluminium is platy structure.
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Cited By (1)
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| CN104553135A (en) * | 2015-01-28 | 2015-04-29 | 平湖市凯丰机械制造厂 | High-strength steel-based copper alloy sliding plate |
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