Copper alloy material for automobile networking camera lens

Abstract

The invention discloses a copper alloy material for an automobile networking camera lens, which comprises the following components in percentage by mass: 20 to 30 percent of Zn, 0.05 to 0.08 percent of P, 0.6 to 0.8 percent of Bi, 0.06 to 0.09 percent of Sn, 0.01 to 0.03 percent of Ce and the balance of copper. In the forming process of the copper alloy material, a refining agent comprises, by mass, 10%-20% of potassium fluoborate, 20%-30% of potassium fluotitanate, 20%-40% of potassium fluozirconate and 15%-30% of sodium tetraborate, the alloy formula and the refining agent components are designed in the scheme, the multiple components in the refining agent are shared, formed copper alloy grains and structures are refined, bismuth phase distribution is improved, and the copper alloy material is good in mechanical property and high in mechanical strength. And the cutting performance is outstanding.

Description

Technical Field

[0001] The present invention relates to the field of material technology, and in particular to a copper alloy material for a camera lens of an automobile road network. Background Art

[0002] In the 5G camera system, the optical module is a key component. In order to meet the application needs of the era of lightweight and miniaturized optical modules, the performance requirements of the module materials have been further improved. For example, the gasket for optical lenses is designed to be thinner and more complex in structure, and the corresponding processing precision requirements are higher. Bismuth brass is the preferred material for gaskets. Due to the coarse structure of bismuth brass and the size and distribution of bismuth phase, its cutting performance is difficult to meet the needs of precision processing and needs to be improved. Summary of the invention

[0003] To solve at least one of the above technical defects, the present invention provides the following technical solutions:

[0004] This application document discloses a copper alloy material for a camera lens of an automobile road network, and the composition formula is as follows by mass: Zn 20-30%, P 0.05-0.08%, Bi 0.6-0.8%, Sn 0.06-0.09%, Ce 0.01-0.03%, and the balance is copper;

[0005] In the forming process of the copper alloy material, the refining agent components include 10-20% potassium fluoroborate, 20-30% potassium fluorotitanate, 20-40% potassium fluorozirconate, and 15-30% sodium tetraborate by mass.

[0006] In this scheme, alloy formula and refining agent components are designed. Multiple components in the refining agent are shared, the grains and structure of the formed copper alloy are refined, the bismuth phase distribution is improved, and the cutting performance is outstanding.

[0007] Furthermore, pure copper is melted and covered with charcoal, and Zn, P, Sn, Bi, and Ce are added to the copper liquid in sequence according to the component formula, and then refined with a refining agent to form an ingot. The order of adding alloy elements is limited, which helps to improve the performance of the subsequent formed copper alloy material.

[0008] Furthermore, the temperature is raised to 930-1000°C and then kept warm, and then a refining agent is added. The refining agent is wrapped with copper foil, and the adding form of the refining agent is limited, so that it is convenient to immerse under the liquid surface, which helps to improve the refining effect.

[0009] Furthermore, the ingot is cut and then heat treated at a temperature range of 300-620°C. According to the composition ratio of the alloy, a specific heat treatment temperature range is defined, which helps to further improve the precipitation morphology and distribution of the bismuth phase and further enhance the cutting performance of the copper alloy material.

[0010] Furthermore, during the heat treatment, the temperature is first raised to 600-620°C, kept warm for 0.7-1.2h, then cooled to 300-350°C, kept warm for 20-40min, raised to 400-420°C, kept warm for 0.5-1h, then cooled to 300-320°C, kept warm for 2-3h, taken out and air-cooled. Limiting the heat treatment heating and cooling process helps to improve the distribution of the bismuth phase.

[0011] Furthermore, the heating and cooling speed during the heat treatment is 200-260°C / h.

[0012] Furthermore, the refining agent components include, by mass, 12% potassium fluoroborate, 28% potassium fluorotitanate, 35% potassium fluorozirconate, and 25% sodium tetraborate.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] 1. The copper alloy formula and the corresponding refining agent formula designed by the present invention are helpful to improve the grain and organizational morphology of the formed copper alloy, improve the cutting performance of the copper alloy, and are suitable for application in the fields of lenses and the like. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0016] Figure 1 It is a microstructure diagram of formed copper alloy. DETAILED DESCRIPTION

[0017] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0018] Example 1

[0019] The copper alloy material for the camera lens of the automobile road network has the following composition formula by mass: Zn23%, P0.06%, Bi0.6%, Sn0.07%, Ce0.01%, and copper balance;

[0020] The forming process of copper alloy materials is as follows:

[0021] First, use a high-frequency induction furnace for hot melting. Add pure copper into a crucible and heat it up to melt it. Add charcoal to cover the liquid surface.

[0022] Second, zinc and refining agent are coated with copper foil. According to the composition distribution direction, copper foil-coated Zn, Sn, copper-phosphorus master alloy and Bi are added into the crucible. After heating to 960°C and keeping warm for 5 minutes, copper foil-coated refining agent (5g / Kg melt) is added, which is kept below the liquid surface and stirred thoroughly.

[0023] Among them, by mass, the refining agent components account for the following proportions: 10% potassium fluoroborate, 30% potassium fluorotitanate, 30% potassium fluorozirconate, and 30% sodium tetraborate.

[0024] Third, the refined copper liquid is poured into a mold and demolded to form an ingot after cooling.

[0025] Fourth, the ingot is cut into slices, and the slices are heat treated. The heat treatment process is as follows:

[0026] First, heat up to 610±2℃, keep warm for 0.7h, cool down to 320℃, keep warm for 30min, heat up to 410±5℃, keep warm for 0.5h, then cool down to 300℃, keep warm for 3h, take out and air cool, the heating and cooling rate is 220℃ / h.

[0027] Example 2

[0028] The copper alloy material for the camera lens of the automobile road network has the following composition formula by mass: Zn25%, P0.07%, Bi0.7%, Sn0.08%, Ce0.015%, and copper balance;

[0029] The forming process of copper alloy materials is as follows:

[0030] First, use a high-frequency induction furnace for hot melting. Add pure copper into a crucible and heat it up to melt it. Add charcoal to cover the liquid surface.

[0031] Second, zinc and refining agent are coated with copper foil. According to the composition distribution direction, copper foil-coated Zn, Sn, copper-phosphorus master alloy and Bi are added into the crucible. After heating to 970°C and keeping warm for 10 minutes, copper foil-coated refining agent (5g / Kg melt) is added, which is kept below the liquid surface and stirred thoroughly.

[0032] Among them, by mass, the refining agent components account for the following proportions: 12% potassium fluoroborate, 28% potassium fluorotitanate, 35% potassium fluorozirconate, and 25% sodium tetraborate.

[0033] Third, the refined copper liquid is poured into a mold and demolded to form an ingot after cooling.

[0034] Fourth, the ingot is cut into slices, and the slices are heat treated. The heat treatment process is as follows:

[0035] First raise the temperature to 615±2℃, keep it for 1h, cool down to 330℃, keep it for 25min, raise the temperature to 415±2℃, keep it for 0.8h, then cool down to 310℃, keep it for 2.5h, take out and air cool, the heating and cooling rate is 230℃ / h.

[0036] Example 3

[0037] The copper alloy material for the camera lens of the automobile road network has the following composition formula by mass: Zn27%, P0.08%, Bi0.8%, Sn0.08%, Ce0.02%, and copper balance;

[0038] The forming process of copper alloy materials is as follows:

[0039] First, use a high-frequency induction furnace for hot melting. Add pure copper into a crucible and heat it up to melt it. Add charcoal to cover the liquid surface.

[0040] Second, zinc and refining agent are coated with copper foil. According to the composition distribution direction, copper foil-coated Zn, Sn, copper-phosphorus master alloy and Bi are added into the crucible. After heating to 980°C and keeping warm for 3 minutes, copper foil-coated refining agent (5g / Kg melt) is added, which is kept below the liquid surface and stirred thoroughly.

[0041] Among them, by mass, the refining agent components account for as follows: 20% potassium fluoroborate, 30% potassium fluorotitanate, 25% potassium fluorozirconate, and 25% sodium tetraborate.

[0042] Third, the refined copper liquid is poured into a mold and demolded to form an ingot after cooling.

[0043] Fourth, the ingot is cut into slices, and the slices are heat treated. The heat treatment process is as follows:

[0044] First raise the temperature to 618±2℃, keep it for 1h, cool down to 350℃, keep it for 30min, raise the temperature to 405±2℃, keep it for 1h, then cool down to 320℃, keep it for 3h, take out and air cool, the heating and cooling rate is 200℃ / h.

[0045] Comparative Example 1

[0046] Compared with Example 2, the weight of the refining agent in this example remains unchanged, and no potassium fluorotitanate is added.

[0047] Comparative Example 2

[0048] Compared with Example 2, in this example, after the temperature is raised to 350° C. in the heat treatment process, the heat preservation time is consistent with the heat treatment process in Example 2, and air cooling is performed.

[0049] The properties of the formed copper alloy were tested, as shown in Table 1:

[0050] Table 1

[0051]

[0052]

[0053] It can be seen that the copper alloy drill bits prepared in this embodiment are small, the size is evenly distributed, the cutting performance is excellent, and the attached Figure 1 Part a is the organizational morphology of comparative example 1, and part B is the organizational morphology of embodiment 1. It can be seen that the compound use of refining agents can better promote the refinement and uniformity of phase distribution, and correspondingly improve the cutting performance. Sn and rare earth promote the uniform distribution of Bi phase particles at the grain boundaries. Under the coordination, the cutting performance of copper alloy is significantly improved, which can meet the needs of precision machining.

[0054] The above are only preferred embodiments of the present invention. The protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.

Claims

1. Copper alloy material for automobile road network camera lens, characterized in that: The composition formula is as follows by mass: Zn 20-30%, P 0.05-0.08%, Bi 0.6-0.8%, Sn 0.06-0.09%, Ce 0.01-0.03%, and the balance is copper; In the forming process of the copper alloy material, the refining agent components include 10-20% potassium fluoroborate, 20-30% potassium fluorotitanate, 20-40% potassium fluorozirconate, and 15-30% sodium tetraborate by mass.

2. The copper alloy material for the automotive road network camera lens according to claim 1, characterized in that: Pure copper is melted and covered with charcoal. Zn, P, Sn, Bi and Ce are added to the copper liquid in sequence according to the component formula. After being refined with a refining agent, ingots are cast.

3. The copper alloy material for the automotive road network camera lens as claimed in claim 2, characterized in that: The temperature is raised to 930-1000°C and then kept warm, and then a refining agent is added, and the refining agent is coated with copper foil.

4. The copper alloy material for the automotive road network camera lens as claimed in claim 2, characterized in that: The ingot is cut and then heat treated at a temperature ranging from 200 to 620°C.

5. The copper alloy material for the automotive road network camera lens as claimed in claim 4, characterized in that: During the heat treatment, first heat up to 600-620℃, keep warm for 0.7-1.2h, cool down to 300-350℃, keep warm for 20-40min, heat up to 400-420℃, keep warm for 0.5-1h, then cool down to 300-320℃, keep warm for 2-3h, take out and air cool.

6. The copper alloy material for the automotive road network camera lens as claimed in claim 5, characterized in that: The heating and cooling rate during heat treatment is 300-260℃ / h.

7. The copper alloy material for automobile road network camera lens according to claim 1, characterized in that: The refining agent components include 12% potassium fluoroborate, 28% potassium fluorotitanate, 35% potassium fluorozirconate and 25% sodium tetraborate by mass.

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