A method for preparing manganese-copper alloy sheet and foil

Abstract

The present invention relates to the technical field of manganese-copper alloys, and specifically to a method for preparing a manganese-copper alloy sheet and foil. In the manganese-copper alloy, manganese and copper can be proportioned in any proportion by weight percentage. High-purity manganese and copper single-element raw materials are used for smelting, and the smelted ingots are heated at 500-1050°C and then forged to obtain a blank; the blank is homogenized and annealed at 700-950°C and then hot-rolled to obtain a plate; the hot-rolled plate is annealed at 800-900°C and then cold-rolled; during the cold rolling process, a vacuum annealing heat treatment can be performed at 800-900°C, and the obtained foil is shaped and sanded to obtain a finished foil with a thickness of 0.01mm-0.2mm. The present invention can solve the problem that there is currently no manganese-copper alloy foil preparation process, and utilizes the characteristic that the high temperature zone of the alloy is a single solid solution to reduce the rheological stress during the processing process and improve the processing plasticity.

Description

Technical field:

[0001] The invention relates to the technical field of manganese-copper alloys, and in particular to a method for preparing a manganese-copper alloy plate and foil. Background technology:

[0002] Manganese copper alloy has good conductivity, weldability and high damping performance. It can be used as surface coating of electronic components, battery electrodes and solder for brazing. It has important application prospects in the fields of electronics, power supply and chemical industry.

[0003] At present, the importance of manganese-copper alloys has not received widespread attention, and related research is relatively rare, especially the preparation of sheet and foil materials has been rarely reported. In order to expand the application market and field of the alloy, it is necessary to prepare high-performance manganese-copper alloy foil materials. The preparation method of binary manganese-copper alloy foil materials has not been reported. The present invention fills this gap. Summary of the invention:

[0004] The purpose of the present invention is to provide a method for preparing a manganese-copper alloy plate foil, solve the problem of preparing high-performance manganese-copper alloy foil, and meet the demand for manganese-copper foil in the fields of electronics, power supply and chemical industry.

[0005] In order to achieve the above objectives, the technical solution of the present invention is:

[0006] A method for preparing a manganese-copper alloy sheet foil comprises the following steps:

[0007] (1) Using manganese and copper as raw materials for smelting;

[0008] (2) The smelted ingot is heated at 500-1050°C for 1-4 hours, and then forged to obtain a billet, the thickness deformation of the billet in one direction is not less than 80%;

[0009] (3) The forged blank is subjected to homogenization annealing at 700-950°C for 1h-4h and then hot rolled to obtain a plate. The number of consecutive hot rollings is 1-5 times, and the total deformation in the thickness direction is not less than 80%;

[0010] (4) After the hot-rolled plate is annealed at 800-900°C for 1h-4h, it is cold-rolled after surface alkali pickling and grinding. During the cold rolling process, the plate is sheared and then reversed for rolling. During the reverse rolling, it is heated at 800-900°C for 1h-4h for vacuum heat treatment annealing. The deformation of a single cold rolling is not less than 35%;

[0011] (5) The foil obtained by cold rolling is heated at 800-900°C for 1h-4h for vacuum heat treatment annealing, and then shaped and sanded to obtain a finished foil with a thickness of 0.01mm-0.2mm.

[0012] In the method for preparing the manganese-copper alloy sheet and foil, manganese and copper can be mixed in any proportion in the manganese-copper alloy according to weight percentage.

[0013] In the method for preparing the manganese-copper alloy sheet and foil, in step (2), the unidirectional thickness deformation of the blank is preferably 80-100%, and the thickness range of the forged blank is 20-100 mm.

[0014] In the method for preparing the manganese-copper alloy sheet and foil, in step (3), the total deformation in the thickness direction is preferably 80-100%, and the thickness of the hot-rolled sheet is in the range of 20-50 mm.

[0015] In the method for preparing the manganese-copper alloy sheet and foil, in step (4), the single cold rolling deformation is preferably 35-50%.

[0016] In the method for preparing manganese-copper alloy sheet and foil, during the cold rolling process of step (4), a dissimilar metal is added between the plates being reversing rolling and then stacked, and the thickness of the added isolated dissimilar metal plate is 1 to 15 times the thickness of the manganese-copper alloy plate.

[0017] The design idea of ​​the present invention is:

[0018] The method of the present invention is based on the actual demand for manganese-copper alloy foil in the fields of electronics, power supply and chemical industry, and meets the requirements for rheological stress and strain in the alloy foil processing process by controlling the temperature and deformation of the alloy ingot forging and rolling, so as to prepare qualified foil and meet the demand for manganese-copper alloy foil.

[0019] The advantages and beneficial effects of the present invention are:

[0020] 1. The present invention is a method for preparing a manganese-copper alloy sheet foil, which can solve the problem that there is currently no manganese-copper alloy foil preparation process.

[0021] 2. The present invention is a method for preparing manganese-copper alloy sheet and foil, which utilizes the characteristic of the alloy's high temperature zone as a single solid solution to reduce the rheological stress during processing and improve processing plasticity. Specific implementation method:

[0022] In the specific implementation process, manganese and copper can be mixed in any proportion calculated by weight percentage; high-purity manganese and copper single-element raw materials are used for smelting, and the smelted ingots are heated at 500-1050° C. and then forged to obtain billets; the billets are homogenized annealed at 700-950° C. and then hot-rolled to obtain plates; the hot-rolled billets are annealed at 800-900° C. and then cold-rolled; during the cold rolling process, vacuum annealing heat treatment can be performed at 800-900° C., and the obtained foil is shaped and sanded to obtain a finished foil with a thickness of 0.01 mm to 0.2 mm.

[0023] Below, the present invention is further described in detail by examples.

[0024] Example 1

[0025] In this embodiment, the method for preparing the manganese-copper alloy sheet and foil, the specific process and results are as follows:

[0026] In manganese-copper alloy, manganese and copper can be matched in any mass ratio of 1:1, and high-purity (purity above 99.9wt%) manganese and copper single raw materials are used for smelting. The smelted ingot is heated at 900℃ for 2h and then forged to obtain a billet. The thickness of the forged billet is 80mm, and the thickness deformation of the billet in one direction is 87%. The forged billet is homogenized annealed at 850℃ for 2h and then hot-rolled to obtain a plate. The number of continuous hot rolling is 2 times, and the total deformation in the thickness direction is 85%. After the hot-rolled plate is annealed at 850℃ for 2h, it is cold-rolled after surface alkali pickling and grinding. During the cold rolling process, the plate can be sheared and then reversed, and the vacuum heat treatment annealing is carried out at 850℃ for 24h during the reverse rolling. The single cold rolling deformation is 38%. During the cold rolling process, dissimilar metals can be added between the plates that are reversed and rolled, and the thickness of the added isolated dissimilar metal plate is 7 times the thickness of the manganese-copper alloy plate. The foil obtained by cold rolling was annealed by vacuum heat treatment at 850°C for 2h, and then shaped and sanded to obtain a finished foil with a thickness of 0.05mm.

[0027] In this embodiment, the performance indicators of the manganese-copper alloy plate are as follows: yield strength 220 MPa, tensile strength 410 MPa, and elongation 42%.

[0028] In this embodiment, the performance indicators of the manganese-copper alloy foil are as follows: yield strength 186 MPa, tensile strength 375 MPa, and elongation 32%.

[0029] Example 2

[0030] In this embodiment, the method for preparing the manganese-copper alloy sheet and foil, the specific process and results are as follows:

[0031] In manganese-copper alloy, manganese and copper can be matched in any mass ratio of 1:1, and high-purity (purity above 99.9wt%) manganese and copper single raw materials are used for smelting. The smelted ingot is heated at 900℃ for 2h and then forged to obtain a billet. The thickness of the forged billet is 70mm, and the single-direction thickness deformation of the billet is 87%. The forged billet is homogenized annealed at 850℃ for 2h and then hot-rolled to obtain a plate. The number of continuous hot rolling is 2 times, and the total deformation in the thickness direction is 83%. After the hot-rolled plate is annealed at 850℃ for 2h, it is cold-rolled after surface alkali pickling and grinding. During the cold rolling process, the plate can be sheared and then reversed, and the vacuum heat treatment annealing is carried out at 850℃ for 24h during the reverse rolling. The single cold rolling deformation is 36%. During the cold rolling process, dissimilar metals can be added between the plates that are reversed and rolled, and the thickness of the added isolated dissimilar metal plate is 7 times the thickness of the manganese-copper alloy plate. The foil obtained by cold rolling was heated at 850°C for 2 hours and then vacuum heat treated for annealing. Then, the foil was shaped and sanded to obtain a finished foil with a thickness of 0.1 mm.

[0032] In this embodiment, the performance indicators of the manganese-copper alloy plate are as follows: yield strength 243 MPa, tensile strength 433 MPa, and elongation 44%.

[0033] In this embodiment, the performance indicators of the manganese-copper alloy foil are as follows: yield strength 195 MPa, tensile strength 364 MPa, and elongation 35%.

[0034] The above description is only a preferred example of the present invention and does not limit the present invention in any way. Any simple modification, change and equivalent change made to the above embodiments according to the technical essence of the invention still fall within the protection scope of the technical solution of the present invention.

Claims

1. A method for preparing a manganese-copper alloy sheet and foil, characterized in that: The steps include: (1) In the manganese-copper alloy, manganese and copper are mixed in a mass ratio of 1:1, and manganese and copper are used as single raw materials for smelting; (2) After the smelted ingot is heated at 500-1050℃ for 1h-4h, it is forged to obtain a billet, and the single-direction thickness deformation of the billet is not less than 80%; (3) The forged billet is homogenized and annealed at 700-950°C for 1h-4h and then hot rolled to obtain a plate. The number of consecutive hot rollings is 1-5 times, and the total deformation in the thickness direction is not less than 80%; (4) After the hot-rolled plate is annealed at 800~900℃ for 1h~4h, it is cold-rolled after surface alkali pickling and grinding. During the cold rolling process, the plate is sheared and then reversed. During the reverse rolling, it is heated at 800~900℃ for 1h~4h and annealed in vacuum. The deformation of a single cold rolling is not less than 35%; (5) The cold-rolled foil is annealed by vacuum heat treatment at 800-900°C for 1h-4h, and then shaped and sanded to obtain a finished foil with a thickness of 0.01mm-0.2mm.

2. The method for preparing a manganese-copper alloy sheet and foil according to claim 1, characterized in that: In step (2), the unidirectional thickness deformation of the blank is 80-100%, and the thickness range of the forged blank is 20-100 mm.

3. The method for preparing a manganese-copper alloy sheet and foil according to claim 1, characterized in that: In step (3), the total deformation in the thickness direction is 80-100%, and the thickness range of the hot-rolled plate is 20-50 mm.

4. The method for preparing a manganese-copper alloy sheet and foil according to claim 1, characterized in that: In step (4), the single cold rolling deformation is 35-50%.

5. The method for preparing a manganese-copper alloy sheet and foil according to claim 1, characterized in that: During the cold rolling process of step (4), a dissimilar metal is added between the plates being reversing rolling and then stacked and rolled. The thickness of the added dissimilar metal isolation plate is 1 to 15 times the thickness of the manganese-copper alloy plate.