Preparation process of wear-resistant and corrosion-resistant zinc-copper-nickel alloy wire

Abstract

The invention discloses a preparation process of a wear-resistant and corrosion-resistant zinc-copper-nickel alloy wire, the wear-resistant and corrosion-resistant zinc-copper-nickel alloy wire comprises the following alloy components in percentage by mass: 58-62% of Cu, 12-15% of Ni, 0.5-1.2% of Al, 0.3-0.8% of Si, 0.05-0.15% of La or Ce, 0.1-0.3% of Ti, 0.02-0.05% of B and the balance of Zn and inevitable impurities, and the preparation process comprises the following steps: step 1, smelting and casting; step 2, homogenizing annealing; 3, hot rolling treatment; 4, cold drawing and intermediate annealing are conducted; and 5, final aging treatment is conducted. According to the preparation process of the wear-resistant and corrosion-resistant zinc-nickel-copper alloy wire, through the synergistic effect of Al, Si and rare earth elements, a nanoscale Al2O3-SiO2 composite passivation film is formed on the alloy surface, the corrosion resistance is remarkably improved, aging treatment and a dispersion strengthening phase (TiB2) are combined, the tensile strength of the wire is larger than or equal to 650 MPa, the hardness of the wire is larger than or equal to 220 HV, the wear resistance is improved by 40% or above compared with traditional BZn15-20, and the service life of the wire is prolonged. And meanwhile, electroplating or coating is not needed in the whole process, environmental protection is achieved, and the cost is reduced by 20-30%.

Description

Technical Field

[0001] The invention relates to the technical field of metal material processing, in particular to a preparation process of a wear-resistant and corrosion-resistant zinc-white copper alloy wire. Background Art

[0002] Nickel silver (BZn alloys) are widely used in precision instruments, electronic components, and marine engineering due to their excellent corrosion resistance, processability, and decorative properties. However, conventional nickel silver (such as BZn15-20) suffers from insufficient corrosion resistance and poor wear resistance in harsh environments (such as high humidity and Cl-containing media), and is prone to stress corrosion cracking after long-term service. Existing processes often improve performance through the addition of trace elements (such as Mn and Fe) or surface plating, but these methods come with drawbacks such as high cost, complex processes, and reduced conductivity. Summary of the Invention

[0003] The object of the present invention is to provide a process for preparing a wear-resistant and corrosion-resistant zinc-white copper alloy wire, so as to solve the above-mentioned problems of the process for preparing a wear-resistant and corrosion-resistant zinc-white copper alloy wire on the market today.

[0004] To achieve the above object, the present invention provides the following technical solution: a process for preparing a wear-resistant and corrosion-resistant zinc-white copper alloy wire, wherein the alloy composition by mass percentage is: Cu 58-62%, Ni 12-15%, Al 0.5-1.2%, Si 0.3-0.8%, La or Ce 0.05-0.15%, Ti 0.1-0.3%, B 0.02-0.05%, and the balance is Zn and unavoidable impurities, comprising the following steps:

[0005] Step 1: Melting and casting;

[0006] Step 2: homogenization annealing;

[0007] Step 3: hot rolling treatment;

[0008] Step 4: cold drawing and intermediate annealing;

[0009] Step 5: Final aging treatment.

[0010] Preferably, during the smelting and casting process in step 1, the smelting is carried out in a vacuum induction furnace protected by argon gas, and the smelting temperature is 1250-1300°C.

[0011] Preferably, during the homogenization annealing process in step 2, the homogenization annealing temperature is 850-900° C. and the temperature is kept at this temperature for 8-12 hours.

[0012] Preferably, in the cold drawing and intermediate annealing process of step 4, the single drawing deformation is 15-20%, the intermediate annealing temperature is 450-500° C., and the annealing time is 20-30 minutes.

[0013] Preferably, in the final aging treatment process of step 5, the final aging treatment temperature is 300-350° C. and the time is 1-2 hours.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] (1) The preparation process of the wear-resistant and corrosion-resistant zinc-white copper alloy wire forms a nano-scale Al2O3-SiO2 composite passivation film on the surface of the alloy through the synergistic effect of Al, Si and rare earth elements, which significantly improves the corrosion resistance. In addition, combined with aging treatment and dispersion strengthening phase (TiB2), the wire has a tensile strength of ≥650MPa and a hardness of ≥220HV. The wear resistance is improved by more than 40% compared with traditional BZn15-20. At the same time, the process does not require electroplating or coating, which is environmentally friendly and reduces costs by 20-30%. DETAILED DESCRIPTION

[0016] The following is a clear and complete description of the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of the present invention.

[0017] Example 1:

[0018] A process for preparing a wear-resistant and corrosion-resistant zinc-white copper alloy wire is described below. The production and application of the wire are described in detail. The alloy composition by mass percentage is: Cu 58-62%, Ni 12-15%, Al 0.5-1.2%, Si 0.3-0.8%, La or Ce 0.05-0.15%, Ti 0.1-0.3%, B 0.02-0.05%, and the balance is Zn and unavoidable impurities. The process comprises the following steps:

[0019] Step 1: Melting and casting;

[0020] Step 2: homogenization annealing;

[0021] Step 3: hot rolling treatment;

[0022] Step 4: cold drawing and intermediate annealing;

[0023] Step 5: Final aging treatment.

[0024] Preferably, during the smelting and casting process in step 1, the smelting is carried out in a vacuum induction furnace protected by argon gas, and the smelting temperature is 1250°C.

[0025] Preferably, during the homogenization annealing process in step 2, the homogenization annealing temperature is 850° C. and the temperature is kept at this temperature for 8 hours.

[0026] Preferably, in the cold drawing and intermediate annealing process of step 4, the single drawing deformation is 15-20%, the intermediate annealing temperature is 450° C., and the annealing time is 20 minutes.

[0027] Preferably, in the final aging treatment process of step 5, the final aging treatment temperature is 300° C. and the time is 1 hour.

[0028] Example 2:

[0029] A process for preparing a wear-resistant and corrosion-resistant zinc-white copper alloy wire is described below. The production and application of the wire are described in detail. The alloy composition by mass percentage is: Cu 58-62%, Ni 12-15%, Al 0.5-1.2%, Si 0.3-0.8%, La or Ce 0.05-0.15%, Ti 0.1-0.3%, B 0.02-0.05%, and the balance is Zn and unavoidable impurities. The process comprises the following steps:

[0030] Step 1: Melting and casting;

[0031] Step 2: homogenization annealing;

[0032] Step 3: hot rolling treatment;

[0033] Step 4: cold drawing and intermediate annealing;

[0034] Step 5: Final aging treatment.

[0035] Preferably, during the smelting and casting process in step 1, the smelting is carried out in a vacuum induction furnace protected by argon gas, and the smelting temperature is 1300°C.

[0036] Preferably, during the homogenization annealing process in step 2, the homogenization annealing temperature is 900° C. and the temperature is kept at 900° C. for 12 hours.

[0037] Preferably, in the cold drawing and intermediate annealing process of step 4, the single drawing deformation is 15-20%, the intermediate annealing temperature is 500° C., and the annealing time is 30 minutes.

[0038] Preferably, in the final aging treatment process of step 5, the final aging treatment temperature is 350° C. and the time is 2 hours.

[0039] It should also be noted that the terms "comprises," "includes," or any other variations thereof are intended to encompass non-exclusive inclusion, such that a process, method, commodity, or apparatus that includes a series of elements includes not only those elements but also other elements not explicitly listed, or includes elements inherent to such process, method, commodity, or apparatus. In the absence of further limitations, an element defined by the phrase "comprises a ..." does not exclude the presence of other identical elements in the process, method, commodity, or apparatus that includes the element.

[0040] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A process for preparing a wear-resistant and corrosion-resistant zinc-white copper alloy wire, characterized in that: The alloy composition by mass percentage is: Cu 58-62%, Ni 12-15%, Al 0.5-1.2%, Si 0.3-0.8%, La or Ce 0.05-0.15%, Ti 0.1-0.3%, B 0.02-0.05%, and the balance is Zn and unavoidable impurities, comprising the following steps: Step 1: Melting and casting; Step 2: homogenization annealing; Step 3: hot rolling treatment; Step 4: cold drawing and intermediate annealing; Step 5: Final aging treatment.

2. The process for preparing a wear-resistant and corrosion-resistant zinc-white copper alloy wire according to claim 1, characterized in that: During the smelting and casting process in step 1, the smelting is performed in a vacuum induction furnace protected by argon gas, and the smelting temperature is 1250-1300°C.

3. The process for preparing a wear-resistant and corrosion-resistant zinc-white copper alloy wire according to claim 1, characterized in that: In the homogenization annealing process of step 2, the homogenization annealing temperature is 850-900° C. and the temperature is kept for 8-12 hours.

4. The process for preparing a wear-resistant and corrosion-resistant zinc-white copper alloy wire according to claim 1, wherein: In the cold drawing and intermediate annealing process of step 4, the single drawing deformation is 15-20%, the intermediate annealing temperature is 450-500° C., and the annealing time is 20-30 minutes.

5. The process for preparing a wear-resistant and corrosion-resistant zinc-white copper alloy wire according to claim 1, characterized in that: In the final aging treatment process of step 5, the final aging treatment temperature is 300-350° C. and the time is 1-2 hours.