Production method of high-performance 6101B alloy conductor rail

By optimizing the chemical composition and process flow of 6101B alloy, the problem that the mechanical properties and conductivity of 6101B alloy in the prior art are solved, and a high-performance 6101B alloy conductive rail is realized.

CN119753382APending Publication Date: 2025-04-04FOSHAN SANSHUIFENGLV ALUMINIUMINDUSTRY CO LTD +1
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Patent Information

Application Number
CN202411719535.4
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-11-28
Publication Date
2025-04-04

AI Technical Summary

Technical Problem

The mechanical properties and conductivity of the 6101B alloys in the prior art are difficult to meet the needs of use at the same time.

Method used

By optimizing the chemical composition of the 6101B alloy, the content of Fe and other impurities is reduced, and combined with refining, refining, degassing, homogenizing, extruding and aging treatment processes, the Mg and Si elements are sufficiently solid solution and strengthened phase precipitation.

Benefits of technology

The conductivity of the 6101B alloy conductive rail is ≥56% IACS, tensile strength ≥225MPa, yield strength ≥205MPa, and elongation ≥12%, and the high performance needs of mechanical properties and conductivity are achieved.

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Abstract

The invention discloses a production method of a high-performance 6101B alloy conductor rail, and belongs to the field of aluminum alloy preparation, the high-performance 6101B alloy conductor rail is obtained by optimizing chemical components of the 6101B alloy conductor rail, reducing Fe content and other impurity content and reducing distortion influence of impurities and impurity points on a lattice structure of the 6101B alloy conductor rail, and the high-performance 6101B alloy conductor rail is obtained. And meanwhile, the range of chemical components is reasonably designed, online solid solution of extrusion treatment is guaranteed, sufficient solid solution of Mg and Si elements is guaranteed, the solid-solution Mg and Si elements are separated out in the form of Mg2Si fine strengthening phases, and the hardness and strength of the profile are improved. And in combination with an aging treatment process, the size of a strengthening phase is coarsened, the number of the strengthening phase is reduced, the distortion influence of the strengthening phase on the lattice structure of the 6101B alloy conductor rail is further reduced, then the resistance increasing effect caused by the distortion structure is reduced, and the mechanical property and the electric conductivity of the 6101B alloy conductor rail can meet the use requirements at the same time.
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Description

Technical Field

[0001] The invention relates to the technical field of aluminum alloy preparation, and in particular to a production method of a high-performance 6101B alloy conductive rail. Background Art

[0002] Conductor rails are widely used in rail transit, mainly for providing electric trains with electricity. With the development of the rail transit industry, existing conductor rails are not only required to have higher mechanical properties such as tensile strength and yield strength, but also have higher and higher requirements for their electrical conductivity in order to reduce the loss of electrical energy during the use of the conductor rails and improve the transmission efficiency of electrical energy. The Chinese patent application number CN201310203316.6 discloses a method for preparing a high-conductivity aluminum alloy, which is modified by adding rare earth elements, purified, degassed, and deslagging, and the surface of the aluminum liquid is covered with a solid covering agent; then cast to make an aluminum alloy conductor material; after the first and second aging treatments, it is taken out of the furnace and air-cooled. The aluminum-silicon alloy produced can meet the electrical conductivity and mechanical property requirements of the power transmission and transformation industry for aluminum alloy materials, but the overall mechanical properties and electrical conductivity cannot meet the use requirements at the same time. For example, the Chinese patent application number CN201811222612.X discloses a process for preparing an aluminum alloy with high conductivity and high strength and an aluminum alloy thereof, the preparation process comprising the following steps: (1) melting solid pure aluminum in a smelting furnace to form liquid pure aluminum; (2) adding silicon, magnesium, iron, copper, manganese and zinc to the smelting furnace in step (1); the proportion of each component is controlled as follows by mass fraction: silicon 0.15-0.3%, iron ≤0.2%, copper ≤0.1%, manganese 0.04-0.06%, magnesium 0.3-0.5%, zinc 0.08-0 .12% and the remainder aluminum; after fully mixing, obtain aluminum alloy liquid; after pouring and cooling the aluminum alloy liquid, obtain primary aluminum alloy; (3) extrude the primary aluminum alloy of step (2) to obtain secondary aluminum alloy; (4) send the secondary aluminum alloy of step (3) to an aging furnace, make the temperature inside the aging furnace uniform, and start the heating power supply; after aging, cool to obtain a processed aluminum alloy with high conductivity and high strength; the aluminum alloy with a conductivity of 34.2Ms / m and a tensile strength of 176MPa cannot meet the needs of high performance use, and there is still room for improvement.

[0003] In the existing aluminum extrusion technology, 6101B alloy is produced. Through conventional preparation processes, the mechanical properties can reach: tensile strength ≥ 215MPa, yield strength ≥ 160MPa, elongation ≥ 8%, but the conductivity is generally 51% IACS-54% IACS. The conductivity is difficult to meet the high conductivity requirements of the conductive rail, and has little effect on reducing the loss of electric energy during the use of the conductive rail and improving the transmission efficiency of electric energy. Therefore, in order to make the mechanical properties and conductivity of the 6101B alloy meet the use requirements at the same time, it is still of great significance to optimize the process. Summary of the invention

[0004] Based on this, in order to solve the technical problem that the mechanical properties and electrical conductivity of the 6101B alloy prepared in the prior art cannot simultaneously meet the use requirements, the present invention provides a production method for a high-performance 6101B alloy conductive rail, and the specific technical solution is as follows:

[0005] A method for producing a high-performance 6101B alloy conductor rail, the method comprising the following steps:

[0006] Adding the raw materials for preparing the 6101B alloy conductor rail into a smelting furnace, and smelting the raw materials to obtain aluminum alloy liquid;

[0007] The aluminum alloy liquid is subjected to refinement treatment, refining treatment, degassing treatment and impurity removal treatment to obtain a purified aluminum alloy liquid;

[0008] The purified aluminum alloy liquid is subjected to continuous casting, homogenization, extrusion and aging treatment to obtain a 6101B alloy conductor rail;

[0009] In the extrusion process, the aluminum rod preheating temperature is 480°C to 510°C, the temperature of the extrusion barrel is 380°C to 450°C, the main cylinder speed is 3.0mm / s to 5.0mm / s, the temperature of the discharge port is 500°C to 550°C, and the discharge port needs to be cooled to below 300°C within 3 minutes.

[0010] The temperature of the aging treatment is 205° C. to 210° C., and the time is 8 h to 9 h.

[0011] Furthermore, the raw materials for preparation include the following components in mass percentage: Si 0.4%-0.45%, Fe0.1%-0.15%, Cu 0.02%, Mn 0.01%, Mg 0.52%-0.57%, Cr 0.01%, Zn0.02%, Ti0.01%, single impurity ≤0.02%, total impurities ≤0.08%, and Al balance.

[0012] Furthermore, the aging treatment is carried out at a temperature of 205° C. and for a time of 8 hours.

[0013] Furthermore, the temperature of the smelting treatment is 750°C to 850°C.

[0014] Furthermore, the refinement treatment is to add a refiner accounting for 0.1% to 0.5% of the mass of the aluminum alloy liquid, and the refiner is obtained by mixing barium chloride and potassium fluorotitanate in a mass ratio of 1: (1 to 2).

[0015] Furthermore, the refining treatment is to add a refining agent accounting for 0.3% to 0.8% of the mass of the aluminum alloy liquid, and the refining agent is obtained by mixing sodium chloride and potassium chloride in a mass ratio of 1:1.5; the refining treatment temperature is 700°C to 720°C, and the refining treatment time is 5min to 10min.

[0016] Furthermore, the temperature of the degassing and impurity removal treatment is 720° C. to 730° C., and the time is 10 min to 20 min.

[0017] Furthermore, the homogenization treatment includes subjecting the aluminum rod to a first stage and a second stage, and the temperature of the first stage is 350°C to 400°C, and the time is 1h to 2h; the temperature of the second stage is 450°C to 500°C, and the time is 7h to 8h.

[0018] Furthermore, the continuous casting process has a pressure of 60 MPa to 75 MPa and a speed of 3.5 m / s to 4.5 m / s.

[0019] In addition, the present invention provides a 6101B alloy conductive rail, wherein the 6101B alloy conductive rail has a conductivity of ≥56% IACS, a tensile strength of ≥225 MPa, a yield strength of ≥205 MPa, and an elongation of ≥12%.

[0020] Compared with the prior art, this application has the following beneficial effects:

[0021] This application optimizes the chemical composition of the 6101B alloy conductive rail, reduces the Fe content and other impurity contents, reduces the distortion effect of impurities and impurity points on the lattice structure of the 6101B alloy conductive rail, thereby reducing the effect of increased resistance caused by the distorted structure. At the same time, the range of chemical composition is reasonably designed to ensure online solid solution during extrusion processing, sufficient solid solution of Mg and Si elements, and precipitation of the dissolved Mg and Si elements as Mg2Si fine strengthening phases to improve the hardness and strength of the profile. Combined with the aging treatment process, the size of the strengthening phase is coarsened, the number of strengthening phases is reduced, and the distortion effect of the strengthening phase on the lattice structure of the 6101B alloy conductive rail is further reduced, thereby reducing the effect of increased resistance caused by the distorted structure, so that the mechanical properties and conductivity of the 6101B alloy conductive rail can meet the use requirements at the same time. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with its embodiments. It should be understood that the specific implementation methods described herein are only used to explain the present invention and do not limit the scope of protection of the present invention.

[0023] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0024] A method for producing a high-performance 6101B alloy conductive rail in one embodiment of the present invention comprises the following steps:

[0025] Adding the raw materials for preparing the 6101B alloy conductor rail into a smelting furnace, and smelting the raw materials to obtain aluminum alloy liquid;

[0026] The aluminum alloy liquid is subjected to refinement treatment, refining treatment, degassing treatment and impurity removal treatment to obtain a purified aluminum alloy liquid;

[0027] The purified aluminum alloy liquid is subjected to continuous casting, homogenization, extrusion and aging treatment to obtain a 6101B alloy conductor rail;

[0028] In the extrusion process, the aluminum rod preheating temperature is 480°C to 510°C, the temperature of the extrusion barrel is 380°C to 450°C, the main cylinder speed is 3.0mm / s to 5.0mm / s, the temperature of the discharge port is 500°C to 550°C, and the discharge port needs to be cooled to below 300°C within 3 minutes.

[0029] The temperature of the aging treatment is 205° C. to 210° C., and the time is 8 h to 9 h.

[0030] In one of the embodiments, the raw materials include the following components in mass percentage: Si 0.4% to 0.45%, Fe 0.1% to 0.15%, Cu 0.02%, Mn 0.01%, Mg 0.52% to 0.57%, Cr 0.01%, Zn 0.02%, Ti 0.01%, single impurity ≤ 0.02%, total impurities ≤ 0.08%, and Al balance.

[0031] In one embodiment, the aging treatment is carried out at a temperature of 205° C. and for a time of 8 hours.

[0032] In one embodiment, the temperature of the smelting process is 750°C to 850°C.

[0033] In one embodiment, the refinement treatment is to add a refiner accounting for 0.1% to 0.5% of the mass of the aluminum alloy liquid, and the refiner is obtained by mixing barium chloride and potassium fluorotitanate in a mass ratio of 1:(1-2).

[0034] In one embodiment, the refining treatment is to add a refining agent accounting for 0.3% to 0.8% of the mass of the aluminum alloy liquid, and the refining agent is obtained by mixing sodium chloride and potassium chloride in a mass ratio of 1:1.5; the refining treatment temperature is 700°C to 720°C, and the refining treatment time is 5min to 10min.

[0035] In one embodiment, the temperature of the degassing and impurity removal treatment is 720° C. to 730° C., and the time is 10 min to 20 min.

[0036] In one embodiment, the homogenization treatment includes subjecting the aluminum rod to a first stage and a second stage, and the temperature of the first stage is 350°C to 400°C, and the time is 1h to 2h; the temperature of the second stage is 450°C to 500°C, and the time is 7h to 8h.

[0037] In one embodiment, the continuous casting process has a pressure of 60 MPa to 75 MPa and a speed of 3.5 m / s to 4.5 m / s.

[0038] Through the above optimization scheme, the conductivity of the 6101B alloy conductive rail prepared in the present application is ≥56% IACS, the tensile strength is ≥225 MPa, the yield strength is ≥205 MPa, and the elongation is ≥12%.

[0039] The embodiments of the present invention will be described in detail below with reference to specific examples.

[0040] Embodiment 1:

[0041] The raw materials for preparing the 6101B alloy conductive rail prepared in Example 1 include the following components in mass percentage: Si 0.4%, Fe 0.1%, Cu 0.02%, Mn 0.01%, Mg 0.57%, Cr 0.01%, Zn 0.02%, Ti 0.01%, single impurity ≤ 0.02%, total impurities ≤ 0.08%, and Al balance.

[0042] The production method of the 6101B alloy conductive rail of Example 1 comprises the following steps:

[0043] The raw materials for preparing the 6101B alloy conductor rail are added into a smelting furnace, and smelted at 760° C. to obtain aluminum alloy liquid;

[0044] The aluminum alloy liquid is subjected to a refinement treatment, wherein the refinement treatment comprises adding a refiner accounting for 0.3% of the mass of the aluminum alloy liquid, and the refiner is obtained by mixing barium chloride and potassium fluorotitanate in a mass ratio of 1:1;

[0045] The aluminum alloy liquid after refinement treatment is subjected to refining treatment, wherein the refining treatment is to add a refining agent accounting for 0.5% of the mass of the aluminum alloy liquid, and the refining agent is obtained by mixing sodium chloride and potassium chloride in a mass ratio of 1:1.5; the refining treatment temperature is 720° C., and the refining treatment time is 8 minutes;

[0046] The aluminum alloy liquid after the refining treatment is subjected to a degassing and impurity removal treatment at 720° C. for 15 minutes to obtain a purified aluminum alloy liquid;

[0047] The purified aluminum alloy liquid is subjected to continuous casting treatment at a pressure of 65 MPa and a speed of 3.5 m / s to obtain an aluminum rod;

[0048] The aluminum rod is subjected to a homogenization treatment, and the homogenization treatment includes subjecting the aluminum rod to a first stage and a second stage, and the temperature of the first stage is 350° C. and the time is 1 hour; the temperature of the second stage is 450° C. and the time is 8 hours;

[0049] The uniformly treated aluminum rod is extruded, and in the extrusion process, the aluminum rod preheating temperature is 480°C, the temperature of the extrusion barrel is 380°C, the main cylinder speed is 3.5 mm / s, the temperature of the discharge port is 500°C, and the discharge must be cooled to below 300°C within 3 minutes, and then aged at 205°C for 8 hours to obtain a 6101B alloy conductive rail.

[0050] Embodiment 2:

[0051] The raw materials for preparing the 6101B alloy conductive rail prepared in Example 2 include the following components in mass percentage: Si 0.43%, Fe 0.11%, Cu 0.02%, Mn 0.01%, Mg 0.55%, Cr 0.01%, Zn 0.02%, Ti 0.01%, single impurity ≤0.02%, total impurities ≤0.08%, and Al balance.

[0052] The production method of the 6101B alloy conductive rail of Example 2 comprises the following steps:

[0053] The raw materials for preparing the 6101B alloy conductor rail are added into a smelting furnace, and smelted at 780° C. to obtain aluminum alloy liquid;

[0054] The aluminum alloy liquid is subjected to a refinement treatment, wherein the refinement treatment comprises adding a refiner accounting for 0.4% of the mass of the aluminum alloy liquid, and the refiner is obtained by mixing barium chloride and potassium fluorotitanate in a mass ratio of 1:1;

[0055] The aluminum alloy liquid after refinement treatment is subjected to refining treatment, wherein the refining treatment is to add a refining agent accounting for 0.6% of the mass of the aluminum alloy liquid, and the refining agent is obtained by mixing sodium chloride and potassium chloride in a mass ratio of 1:1.5; the refining treatment temperature is 720° C., and the refining treatment time is 10 minutes;

[0056] The aluminum alloy liquid after the refining treatment is subjected to a degassing and impurity removal treatment at 725° C. for 18 minutes to obtain a purified aluminum alloy liquid;

[0057] The purified aluminum alloy liquid is subjected to continuous casting treatment at a pressure of 70 MPa and a speed of 3.5 m / s to obtain an aluminum rod;

[0058] The aluminum rod is subjected to a homogenization treatment, and the homogenization treatment includes subjecting the aluminum rod to a first stage and a second stage, and the temperature of the first stage is 380° C. and the time is 1 hour; the temperature of the second stage is 500° C. and the time is 7 hours;

[0059] The uniformly treated aluminum rod is extruded, and in the extrusion process, the aluminum rod preheating temperature is 500°C, the temperature of the extrusion barrel is 420°C, the main cylinder speed is 3.5mm / s, the temperature of the discharge port is 520°C, and the discharge must be cooled to below 300°C within 3 minutes, and then aged at 205°C for 8 hours to obtain a 6101B alloy conductive rail.

[0060] Embodiment 3:

[0061] The raw materials for preparing the 6101B alloy conductive rail prepared in Example 3 include the following components in mass percentage: Si 0.45%, Fe 0.15%, Cu 0.02%, Mn 0.01%, Mg 0.55%, Cr 0.01%, Zn 0.02%, Ti 0.01%, single impurity ≤0.02%, total impurities ≤0.08%, and Al balance.

[0062] The production method of the 6101B alloy conductive rail of Example 3 comprises the following steps:

[0063] The raw materials for preparing the 6101B alloy conductor rail are added into a smelting furnace, and smelted at 760° C. to obtain aluminum alloy liquid;

[0064] The aluminum alloy liquid is subjected to a refinement treatment, wherein the refinement treatment comprises adding a refiner accounting for 0.5% of the mass of the aluminum alloy liquid, and the refiner is obtained by mixing barium chloride and potassium fluorotitanate in a mass ratio of 1:1;

[0065] The aluminum alloy liquid after refinement treatment is subjected to refining treatment, wherein the refining treatment is to add a refining agent accounting for 0.8% of the mass of the aluminum alloy liquid, and the refining agent is obtained by mixing sodium chloride and potassium chloride in a mass ratio of 1:1.5; the refining treatment temperature is 720° C., and the refining treatment time is 10 minutes;

[0066] The aluminum alloy liquid after the refining treatment is subjected to a degassing and impurity removal treatment at 730° C. for 20 minutes to obtain a purified aluminum alloy liquid;

[0067] The purified aluminum alloy liquid is subjected to continuous casting treatment at a pressure of 70 MPa and a speed of 3.5 m / s to obtain an aluminum rod;

[0068] The aluminum rod is subjected to a homogenization treatment, and the homogenization treatment includes subjecting the aluminum rod to a first stage and a second stage, and the temperature of the first stage is 400° C. and the time is 1 hour; the temperature of the second stage is 480° C. and the time is 7 hours;

[0069] The uniformly treated aluminum rod is extruded, and in the extrusion process, the aluminum rod preheating temperature is 510°C, the temperature of the extrusion barrel is 450°C, the main cylinder speed is 3.5 mm / s, the temperature of the discharge port is 540°C, and the discharge must be cooled to below 300°C within 3 minutes, and then aged at 205°C for 8 hours to obtain a 6101B alloy conductive rail.

[0070] Comparative Example 1:

[0071] The difference between Comparative Example 1 and Example 3 is that the raw materials for preparation in Comparative Example 1 include the following chemical components in percentage by mass, and the rest are the same as Example 3.

[0072] The raw materials for preparing the 6101B alloy conductive rail prepared in Comparative Example 1 include the following components in mass percentage: Si 0.79%, Fe 0.55%, Cu 0.02%, Mn 0.01%, Mg 0.10%, Cr 0.01%, Zn 0.02%, Ti 0.01%, single impurity ≤0.02%, total impurities ≤0.08%, and Al balance.

[0073] Comparative Example 2:

[0074] The difference between Comparative Example 2 and Example 3 is that no Mg element is added in Comparative Example 2, and the rest is the same as Example 3.

[0075] Comparative Example 3:

[0076] The difference between Comparative Example 3 and Example 3 is that the material in Comparative Example 3 is not subjected to homogenization treatment, and the other aspects are the same as those of Example 3.

[0077] Comparative Example 4:

[0078] The difference between Comparative Example 4 and Example 3 is that the process conditions of the extrusion treatment in Comparative Example 4 are: the preheating temperature of the aluminum rod is 350° C., the temperature of the extrusion barrel is 380° C., the main cylinder speed is 5.0 mm / s, and the temperature of the discharge port is 580° C. The rest is the same as Example 3.

[0079] Comparative Example 5:

[0080] The difference between Comparative Example 5 and Example 3 is that the process conditions of the extrusion treatment in Comparative Example 5 are: the preheating temperature of the aluminum rod is 550° C., the temperature of the extrusion barrel is 450° C., the main cylinder speed is 5.0 mm / s, and the temperature of the discharge port is 600° C. The others are the same as Example 3.

[0081] Comparative Example 6:

[0082] The difference between Comparative Example 6 and Example 3 is that the temperature of the aging treatment in Comparative Example 6 is 200° C. and the time is 9 hours, and the others are the same as Example 3.

[0083] Comparative Example 7:

[0084] The difference between Comparative Example 7 and Example 3 is that the aging treatment temperature in Comparative Example 7 is 205° C. and the time is 7 h, and the others are the same as Example 3.

[0085] Comparative Example 8:

[0086] The difference between Comparative Example 8 and Example 3 is that the temperature of the aging treatment in Comparative Example 8 is 210° C. and the time is 7 h, and the others are the same as Example 3.

[0087] The performance tests were conducted on the 6101B alloy conductive rail samples prepared in Examples 1 to 3 and the 6101B alloy conductive rail comparison samples prepared in Comparative Examples 1 to 8, wherein the mechanical properties were referenced to GB / T 228.1-2010 and the conductivity was referenced to GB / T12966-2008. The results are shown in Table 1 below.

[0088] Table 1: Performance test results

[0089]

[0090]

[0091] From the data analysis of Table 1, it can be seen that after the composition and process optimization, the present application can obtain a 6101B alloy conductive rail that satisfies both mechanical properties and electrical conductivity. Specifically, the difference between comparative examples 1 to 2 and Example 3 is that the composition of the raw materials is different, but the mechanical properties and electrical conductivity are significantly different from those of Example 3, indicating that the raw materials prepared in the present application can affect the application performance of the 6101B alloy conductive rail; the difference between comparative examples 3 to 8 and Example 3 is the difference in process parameters, but it can also be seen that the mechanical properties and electrical conductivity are significantly different from those of Example 3, indicating that the process parameters of the present application have an effect on the electrical conductivity, tensile strength, yield strength and elongation of the 6101B alloy conductive rail. Under the optimization of the process parameters, the electrical conductivity of the 6101B alloy conductive rail prepared in the present application is ≥56%IACS, the tensile strength is ≥225MPa, the yield strength is ≥205MPa, and the elongation is ≥12%.

[0092] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0093] The above-mentioned embodiments only express several implementation methods of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. A method for producing high-performance 6101B alloy conductor rails, characterized in that: The production method comprises the following steps: Adding the raw materials for preparing the 6101B alloy conductor rail into a smelting furnace, and smelting the raw materials to obtain aluminum alloy liquid; The aluminum alloy liquid is subjected to refinement treatment, refining treatment, degassing treatment and impurity removal treatment to obtain a purified aluminum alloy liquid; The purified aluminum alloy liquid is subjected to continuous casting, homogenization, extrusion and aging treatment to obtain a 6101B alloy conductor rail; In the extrusion process, the aluminum rod preheating temperature is 480°C to 510°C, the temperature of the extrusion barrel is 380°C to 450°C, the main cylinder speed is 3.0mm / s to 5.0mm / s, the temperature of the discharge port is 500°C to 550°C, and the discharge port needs to be cooled to below 300°C within 3 minutes. The temperature of the aging treatment is 205° C. to 210° C., and the time is 8 h to 9 h.

2. The production method according to claim 1, characterized in that The raw materials for preparation include the following components in mass percentage: Si 0.4%-0.45%, Fe 0.1%-0.15%, Cu 0.02%, Mn 0.01%, Mg 0.52%-0.57%, Cr 0.01%, Zn 0.02%, Ti 0.01%, single impurity ≤0.02%, total impurities ≤0.08%, and Al balance.

3. The production method according to claim 1, characterized in that The aging treatment was performed at a temperature of 205° C. and for a time of 8 h.

4. The production method according to claim 1, characterized in that The temperature of the smelting treatment is 750°C to 850°C.

5. The production method according to claim 1, characterized in that: The refinement treatment is to add a refiner accounting for 0.1% to 0.5% of the mass of the aluminum alloy liquid, and the refiner is obtained by mixing barium chloride and potassium fluorotitanate in a mass ratio of 1: (1 to 2).

6. The production method according to claim 1, characterized in that: The refining treatment is to add a refining agent accounting for 0.3% to 0.8% of the mass of the aluminum alloy liquid, and the refining agent is obtained by mixing sodium chloride and potassium chloride in a mass ratio of 1:1.5; the refining treatment temperature is 700°C to 720°C, and the refining treatment time is 5min to 10min.

7. The production method according to claim 1, characterized in that: The temperature during the degassing and impurity removal treatment is 720° C. to 730° C., and the time is 10 min to 20 min.

8. The production method according to claim 1, characterized in that: The homogenization treatment includes subjecting the aluminum rod to a first stage and a second stage, wherein the temperature of the first stage is 350°C to 400°C and the time is 1h to 2h; the temperature of the second stage is 450°C to 500°C and the time is 7h to 8h.

9. The production method according to claim 1, characterized in that: The continuous casting process has a pressure of 60 MPa to 75 MPa and a speed of 3.5 m / s to 4.5 m / s.

10. A 6101B alloy conductor rail, characterized in that: The 6101B alloy conductive rail is produced by the method according to any one of claims 1 to 9, and the conductivity of the 6101B alloy conductive rail is ≥56% IACS, the tensile strength is ≥225 MPa, the yield strength is ≥205 MPa, and the elongation is ≥12%.

Citation Information

Patent Citations

  • 6101B alloy extruded profile with high conductivity and processing technology thereof

    CN112210701A