Heat treatment method of copper-aluminum cold-rolled clad plate
A heat treatment method and composite board technology, which is applied in the field of copper-aluminum composite boards, can solve problems such as the reduction of the bonding strength of composite boards and affect the performance of materials, and achieve the effects of excellent surface quality, low cost, and high bonding strength at the copper-aluminum interface
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Embodiment 1
[0026] This embodiment provides a heat treatment method for a copper-aluminum cold-rolled clad plate, which includes the following steps:
[0027] Step 1. Select the copper-aluminum cold-rolled composite plate whose thickness and width meet the requirements according to the requirements of the finished product as a raw material;
[0028] Step 2: Anneal heat treatment on the copper-aluminum cold-rolled clad plate under the protection of an inert gas: gradually raise the temperature to 320°C~360°C, keep it warm for 1~3h and then cool to room temperature;
[0029] Step 3, carrying out several times of cold finish rolling to the clad plate after step 2 treatment;
[0030] Step 4: Under the protection of the mixed gas of nitrogen and hydrogen, heat-treat the composite board after step 3 again: the temperature is 480°C~560°C, and the time is 2~5min, so as to obtain the finished product.
[0031] In this example, the finished product is prepared by low-temperature long-time annealin...
Embodiment 2
[0037] On the basis of Example 1, this example further provides a specific embodiment, the purpose of which is to prepare a copper-aluminum composite strip suitable for electronic components with a thickness of 1.50 mm. The specific preparation method is as follows:
[0038] Step 1, select raw materials; image 3 As shown, the copper-aluminum cold-rolled composite strip formed by embedding an aluminum strip on the copper strip is selected as a raw material. The upper and lower surfaces of the copper-aluminum cold-rolled composite strip are flat, and its overall thickness is 3.60mm The overall width is 62.00mm, of which the thickness of the aluminum strip is 0.27mm and the width is 7.50mm; figure 1 It can be seen that there is no diffusion transition layer at the interface bonding part of the copper-aluminum cold-rolled clad plate;
[0039] Step 2. On the basis of step 1, heat-treat the copper-aluminum cold-rolled clad plate: place the copper-aluminum cold-rolled clad plate in...
Embodiment 3
[0044] On the basis of Example 1, this example further provides a specific embodiment, the purpose of which is to prepare a copper-aluminum composite strip suitable for electronic components with a thickness of 0.80 mm. The specific preparation method is as follows:
[0045] Step 1, select raw materials; Figure 4 As shown, the copper-aluminum cold-rolled composite strip formed by embedding an aluminum strip on the copper strip is selected as a raw material. The upper and lower surfaces of the copper-aluminum cold-rolled composite strip are flat, and its overall thickness is 3.60mm The overall width is 55.00mm, of which the thickness of the aluminum strip is 0.50mm and the width is 15.mm; by figure 1 It can be seen that there is no diffusion transition layer at the interface bonding part of the copper-aluminum cold-rolled clad plate;
[0046]Step 2. On the basis of step 1, heat-treat the copper-aluminum cold-rolled clad plate: place the copper-aluminum cold-rolled clad plate ...
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Abstract
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