CN119800156B - A corrosion-resistant zinc alloy material and preparation method thereof - Google Patents
A corrosion-resistant zinc alloy material and preparation method thereof Download PDFInfo
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Abstract
本发明涉及锌合金材料技术领域，具体涉及一种耐腐蚀锌合金材料及其制备方法。一种耐腐蚀锌合金材料，包括以下质量百分比的组分：8%~11%铝、0.25%~0.45%铜、0.1%~0.3%镍、0.01%～0.02%钛、0.01%~0.03%钴、0.01%~0.03%镧、0.001%~0.002%镝、0.003%~0.005%硅化锰，余量为锌。本申请通过特定配比的合金组分以及精细的制备工艺，不仅保持了锌合金原有的良好铸造性能和机械强度，还显著提高了锌合金材料的耐腐蚀性，延长了使用寿命，拓宽了其应用范围。The present invention relates to the technical field of zinc alloy materials, and in particular to a corrosion-resistant zinc alloy material and a preparation method thereof. A corrosion-resistant zinc alloy material comprises the following components in percentage by mass: 8% to 11% aluminum, 0.25% to 0.45% copper, 0.1% to 0.3% nickel, 0.01% to 0.02% titanium, 0.01% to 0.03% cobalt, 0.01% to 0.03% lanthanum, 0.001% to 0.002% dysprosium, 0.003% to 0.005% manganese silicide, and the balance is zinc. The present application not only maintains the original good casting performance and mechanical strength of the zinc alloy through a specific ratio of alloy components and a sophisticated preparation process, but also significantly improves the corrosion resistance of the zinc alloy material, prolongs its service life, and broadens its application range.
Description
Technical Field
The invention relates to the technical field of zinc alloy materials, in particular to a corrosion-resistant zinc alloy material and a preparation method thereof.
Background
The zinc alloy material is an alloy material formed by taking zinc as a main component and adding elements such as aluminum, copper and the like, and has wide application in various fields such as automobile parts, building hardware, electronic and electric products, daily necessities and the like due to good casting performance, mechanical strength and relatively low cost. However, zinc is a relatively active metal and is easy to react with oxygen in the air to generate zinc oxide in a humid environment, so that zinc oxide is further converted into basic zinc carbonate, loose corrosion products are formed on the surface, and the overall structure of the zinc alloy material is weakened. Meanwhile, in some cases, the zinc alloy material can generate intergranular corrosion, and particularly in an environment containing chloride ions, the corrosion speed is obviously accelerated. The non-corrosion resistance limits the application of the zinc alloy material in some application scenes with high requirements on durability and reliability, such as the fields of aerospace, ocean engineering and the like. In order to prolong the service life of the zinc alloy material, widen the application range of the zinc alloy material, improve the product quality and improve the corrosion resistance of the zinc alloy material, the zinc alloy material is urgent. Therefore, it is necessary to further improve the corrosion resistance of the zinc alloy material and overcome the defect of the existing zinc alloy material in the aspect of corrosion resistance, so that the application field of the zinc alloy material is further widened, and the requirements of different industries on the zinc alloy material are met.
Disclosure of Invention
In order to further improve the corrosion resistance of the zinc alloy material, the application provides the zinc alloy material with good corrosion resistance. The application not only maintains the original good casting performance and mechanical strength of the zinc alloy, but also obviously improves the corrosion resistance of the zinc alloy material, prolongs the service life and widens the application range of the zinc alloy material through the alloy components with specific proportions and the fine preparation process.
In a first aspect, the present application provides a corrosion-resistant zinc alloy material, which adopts the following technical scheme:
The corrosion-resistant zinc alloy material comprises, by mass, 8% -11% of aluminum, 0.25% -0.45% of copper, 0.1% -0.3% of nickel, 0.01% -0.02% of titanium, 0.01% -0.03% of cobalt, 0.01% -0.03% of lanthanum, 0.001% -0.002% of dysprosium, 0.003% -0.005% of manganese silicide and the balance of zinc.
According to the technical scheme, the corrosion resistance of the zinc alloy is obviously improved through the formula design. The cobalt-containing cobalt alloy passivation film is used for forming a compact aluminum oxide protection film, effectively preventing an external corrosion medium from contacting with a matrix metal and refining grains, copper enhances hardness and strength but not excessively so as to maintain ductility, nickel refines grains and inhibits harmful phase generation and reduces local corrosion, titanium is used as an effective grain refiner to improve strength and toughness and enhance corrosion resistance, cobalt promotes the formation of the passivation film, particularly the stability of a zinc alloy material in a chloride ion environment is improved, the stability of the passivation film is enhanced, cracking and peeling of the film are prevented, lanthanum and dysprosium are used as rare earth elements, electrode potential can be improved, a compact oxide layer is formed on the surface, and the passivation film is stabilized by the synergistic effect of the lanthanum and the dysprosium, so that the formation of the passivation film can be effectively promoted and the integrity of the passivation film is maintained, the generation of corrosion products is reduced, manganese silicide can remove oxygen in a melt, oxide inclusions are reduced, the effect of the lanthanum and dysprosium is better exerted in purifying and refining the grains is also ensured, and the cobalt can form a stable passivation film on the surface because local non-uniformity possibly caused by the oxide inclusions is reduced. The application reduces the influence of the corrosive medium on the zinc alloy material through the synergistic effect between the elements, so that the zinc alloy material shows good corrosion resistance in complex environment.
Preferably, the alloy comprises the following components in percentage by mass of 9.476% of aluminum, 0.382% of copper, 0.217% of nickel, 0.018% of titanium, 0.023% of cobalt, 0.019% of lanthanum, 0.001% of dysprosium, 0.004% of manganese silicide and the balance of zinc.
Preferably, the particle size of the manganese silicide is 10-30 nm.
In a second aspect, the preparation method of the corrosion-resistant zinc alloy material provided by the application adopts the following technical scheme:
a preparation method of a corrosion-resistant zinc alloy material comprises the following steps:
step 1, respectively taking an aluminum source, a copper source, a nickel source, a titanium source, a cobalt source, a rare earth source, manganese silicide and pure zinc according to mass percentages for batching;
smelting an aluminum source, a copper source, a nickel source, a titanium source, a cobalt source, a lanthanum source, a dysprosium source, manganese silicide and pure zinc, sampling from a furnace, performing stokehold analysis, and performing a next procedure after passing the qualified furnace;
Step 3, casting the melt obtained in the step 2 to obtain an ingot;
and 4, preserving heat of the cast ingot obtained in the step 3 for 2-3 hours, and naturally cooling to obtain the corrosion-resistant zinc alloy material.
According to the technical scheme, the uniform distribution of each component in the alloy is ensured through the fine preparation process, the ingredients in the step 1, the smelting and the stokehold analysis in the step 2, the casting in the step 3 and the heat preservation and natural cooling in the step 4, so that the mechanical property and the corrosion resistance of the zinc alloy material are improved. The preparation method provided by the application is simple in process and easy to control, and the prepared corrosion-resistant zinc alloy material is good in performance and has a wide application prospect.
Preferably, the aluminum source is a Zn-Al-Cu ternary master alloy, the copper source is electrolytic copper and a Zn-Al-Cu ternary master alloy, the nickel source is a Zn-Ni-Ti ternary master alloy, the titanium source is a Zn-Ni-Ti ternary master alloy, the cobalt source is a Co-Zn master alloy, the lanthanum source is a La-Zn master alloy, and the dysprosium source is pure dysprosium.
In the technical scheme, the specific intermediate alloy is selected as the raw material, so that the accurate control and uniform distribution of alloy components can be ensured, and the performance degradation caused by impure raw materials or improper proportion is avoided. Meanwhile, the introduction of the intermediate alloy is also beneficial to improving the fluidity in the smelting process, reducing casting defects and further improving the overall performance of the zinc alloy material.
Preferably, the specific operation of the step 2 is that firstly, the temperature of the gas furnace is raised to 450-500 ℃, pure zinc is added, the temperature is raised gradually to 600-650 ℃, the pure zinc is completely melted, then the temperature is raised gradually to 650-700 ℃, an aluminum source and a copper source are added, the aluminum source and the copper source are completely melted and stirred until the mixture is uniform, then the temperature is raised to 700-750 ℃, a nickel source and a titanium source are added, the nickel source and the titanium source are completely melted and stirred until the mixture is uniform, the temperature is raised to 750-800 ℃, a cobalt source, a lanthanum source and a dysprosium source are added, the cobalt source, the lanthanum source and the dysprosium source are completely melted and stirred until the mixture is uniform, then the furnace temperature is maintained at 750-800 ℃, manganese silicide is added, the manganese silicide is fully stirred, finally, the furnace is sampled, the furnace analysis is carried out, and the next procedure is carried out after the furnace is qualified.
In the technical scheme, the smelting temperature and the adding sequence of the step 2 are strictly controlled, so that the components are uniformly melted and mixed in the melt, and the performance difference caused by uneven component distribution is avoided. Meanwhile, manganese silicide can be uniformly dispersed in the melt by maintaining a certain furnace temperature and fully stirring, so that the effects of removing oxygen and refining grains are fully exerted.
Preferably, the casting temperature in the step 3 is 680-720 ℃.
In the technical scheme, the casting temperature is controlled, so that the coarsening of the structure and the performance reduction caused by the excessively high temperature can be avoided while the fluidity of the alloy is ensured.
Preferably, the heat preservation temperature in the step 4 is 350-400 ℃.
According to the technical scheme, the phase change in the cast ingot can be fully performed by carrying out heat preservation in the temperature range, so that the structure is further refined, and the performance of the alloy is improved. Meanwhile, the natural cooling mode is also beneficial to reducing thermal stress and avoiding the generation of defects such as cracks and the like.
In summary, the present application includes at least one of the following beneficial technical effects:
The alloy components with specific proportions reduce the influence of corrosion medium on the zinc alloy material through the synergistic effect of the components, so that the zinc alloy material can still maintain good corrosion resistance in a complex environment, the service life of the zinc alloy material is prolonged, and the application range of the zinc alloy material is widened;
Through the fine preparation process, the original good casting performance and mechanical strength of the zinc alloy material are maintained, and the corrosion resistance of the zinc alloy material is improved.
Detailed Description
For a better description of the objects, technical solutions and advantages of the present invention, the present invention will be further described with reference to the following specific examples.
The contents of the components of the zinc alloy materials of examples 1 to 3 are shown in Table 1.
Table 1:
Example 1A method for preparing a corrosion-resistant zinc alloy material comprises the following steps:
and 1, respectively taking an aluminum source, a copper source, a nickel source, a titanium source, a cobalt source, a rare earth source, manganese silicide and pure zinc according to the mass percentages of the table 1 for batching.
The aluminum source is a Zn-Al-Cu ternary intermediate alloy, the copper source is electrolytic copper and the Zn-Al-Cu ternary intermediate alloy, the nickel source is a Zn-Ni-Ti ternary intermediate alloy, the titanium source is a Zn-Ni-Ti ternary intermediate alloy, the cobalt source is a Co-Zn intermediate alloy, the lanthanum source is a La-Zn intermediate alloy, and the dysprosium source is pure dysprosium.
Heating the gas furnace to 450 ℃, adding pure zinc, gradually heating to 600 ℃ until the pure zinc is completely melted, then gradually heating to 650 ℃, adding an aluminum source and a copper source until the pure zinc is completely melted and stirred until the pure zinc and the copper source are uniformly mixed, then heating to 700 ℃, adding a nickel source and a titanium source until the pure zinc and the copper source are completely melted and stirred until the pure zinc and the copper source are uniformly mixed, heating to 750 ℃, adding a cobalt source, a lanthanum source and a dysprosium source until the pure zinc and the cobalt source and the dysprosium source are completely melted and stirred until the pure zinc and the dysprosium source are uniformly mixed, then maintaining the furnace temperature at 750 ℃, adding manganese silicide and fully stirring, finally sampling from the furnace, performing stokehole analysis, and carrying out next procedure after the impurity content of each component is less than or equal to 0.01 percent in a qualified range.
Step 3, casting the melt obtained in the step 2 in a mould at 680 ℃ to obtain an ingot;
And 4, preserving heat of the cast ingot obtained in the step 3 at 350 ℃ for 2.5 hours, and naturally cooling to obtain the corrosion-resistant zinc alloy material.
Example 2A method for preparing a corrosion-resistant zinc alloy material comprises the following steps:
and 1, respectively taking an aluminum source, a copper source, a nickel source, a titanium source, a cobalt source, a rare earth source, manganese silicide and pure zinc according to the mass percentages of the table 1 for batching.
The aluminum source is a Zn-Al-Cu ternary intermediate alloy, the copper source is electrolytic copper and the Zn-Al-Cu ternary intermediate alloy, the nickel source is a Zn-Ni-Ti ternary intermediate alloy, the titanium source is a Zn-Ni-Ti ternary intermediate alloy, the cobalt source is a Co-Zn intermediate alloy, the lanthanum source is a La-Zn intermediate alloy, and the dysprosium source is pure dysprosium.
Heating the gas furnace to 450 ℃, adding pure zinc, gradually heating to 650 ℃, until the pure zinc is completely melted, gradually heating to 680 ℃, adding an aluminum source and a copper source, completely melting, stirring to be uniform, heating to 720 ℃, adding a nickel source and a titanium source, completely melting, stirring to be uniform, heating to 780 ℃, adding a cobalt source, a lanthanum source and a dysprosium source, completely melting, stirring to be uniform, maintaining the furnace temperature at 780 ℃, adding manganese silicide, fully stirring, sampling from the furnace, performing stokehole analysis, and carrying out next procedure after the impurity content of each component is less than or equal to 0.01 percent in a qualified range.
Step 3, pouring the melt obtained in the step 2 into a mould at 700 ℃ to obtain an ingot;
and 4, preserving heat of the cast ingot obtained in the step 3 at 380 ℃ for 2.5 hours, and naturally cooling to obtain the corrosion-resistant zinc alloy material.
Example 3A method for preparing a corrosion-resistant zinc alloy material comprises the following steps:
and 1, respectively taking an aluminum source, a copper source, a nickel source, a titanium source, a cobalt source, a rare earth source, manganese silicide and pure zinc according to the mass percentages of the table 1 for batching.
The aluminum source is a Zn-Al-Cu ternary intermediate alloy, the copper source is electrolytic copper and the Zn-Al-Cu ternary intermediate alloy, the nickel source is a Zn-Ni-Ti ternary intermediate alloy, the titanium source is a Zn-Ni-Ti ternary intermediate alloy, the cobalt source is a Co-Zn intermediate alloy, the lanthanum source is a La-Zn intermediate alloy, and the dysprosium source is pure dysprosium.
And 2, heating the gas furnace to 500 ℃, adding pure zinc, gradually heating to 650 ℃, until the pure zinc is completely melted, then gradually heating to 700 ℃, adding an aluminum source and a copper source to be completely melted and stirring until the mixture is uniform, heating to 750 ℃, adding a nickel source and a titanium source to be completely melted and stirring until the mixture is uniform, heating to 800 ℃, adding a cobalt source, a lanthanum source and a dysprosium source to be completely melted and stirring until the mixture is uniform, maintaining the furnace temperature at 800 ℃, adding manganese silicide and fully stirring, finally sampling from the furnace, performing stokehole analysis, and carrying out next procedure after the impurity content of each component is less than or equal to 0.01 percent in a qualified range.
Step 3, casting the melt obtained in the step 2 in a mould at 720 ℃ to obtain an ingot;
and 4, preserving heat of the cast ingot obtained in the step 3 at 400 ℃ for 2.5 hours, and naturally cooling to obtain the corrosion-resistant zinc alloy material.
The content of each component of the zinc alloy materials of comparative examples 1 to 5 is shown in Table 2.
Table 2:
comparative example 1A zinc alloy material, unlike example 2, does not contain a cobalt source, and the amounts of the specific ingredients are shown in Table 2.
Heating the gas furnace to 450 ℃, adding pure zinc, gradually heating to 650 ℃, until the pure zinc is completely melted, then gradually heating to 680 ℃, adding an aluminum source and a copper source until the pure zinc and the copper source are completely melted and stirred until the pure zinc and the copper source are uniformly mixed, then heating to 720 ℃, adding a nickel source and a titanium source until the pure zinc and the copper source are completely melted and stirred until the pure zinc and the copper source are uniformly mixed, heating to 780 ℃, adding a lanthanum source and a dysprosium source until the pure zinc and the dysprosium source are completely melted and stirred until the pure zinc and the dysprosium source are uniformly mixed, then maintaining the furnace temperature at 780 ℃, adding manganese silicide and fully stirring, finally sampling from the furnace, performing stokehole analysis, and carrying out next procedure after the impurity content of each component is less than or equal to 0.01 percent in a qualified range.
Comparative example 2A zinc alloy material, unlike example 2, does not contain a lanthanum source, and the amounts of the specific ingredients are shown in Table 2.
Heating the gas furnace to 450 ℃, adding pure zinc, gradually heating to 650 ℃, until the pure zinc is completely melted, then gradually heating to 680 ℃, adding an aluminum source and a copper source until the pure zinc and the copper source are completely melted and stirred until the pure zinc and the copper source are uniformly mixed, then heating to 720 ℃, adding a nickel source and a titanium source until the pure zinc and the copper source are completely melted and stirred until the pure zinc and the copper source are uniformly mixed, heating to 780 ℃, adding a cobalt source and a dysprosium source until the cobalt source and the dysprosium source are completely melted and stirred until the pure zinc and the dysprosium source are uniformly mixed, then maintaining the furnace temperature at 780 ℃, adding manganese silicide and fully stirring, finally sampling from the furnace, performing stokehole analysis, and carrying out next procedure after the impurity content of each component is less than or equal to 0.01 percent in a qualified range.
Comparative example 3A zinc alloy material, unlike example 2, does not contain a source of dysprosium, and the amounts of the specific ingredients are shown in Table 2.
Heating the gas furnace to 450 ℃, adding pure zinc, gradually heating to 650 ℃, until the pure zinc is completely melted, then gradually heating to 680 ℃, adding an aluminum source and a copper source until the pure zinc and the copper source are completely melted and stirred until the pure zinc and the copper source are uniformly mixed, then heating to 720 ℃, adding a nickel source and a titanium source until the pure zinc and the copper source are completely melted and stirred until the pure zinc and the copper source are uniformly mixed, heating to 780 ℃, adding a cobalt source and a lanthanum source until the pure zinc and the cobalt source are completely melted and stirred until the pure zinc and the pure zinc are uniformly mixed, then maintaining the furnace temperature at 780 ℃, adding manganese silicide and fully stirring, finally sampling from the furnace, performing stokehole analysis, and carrying out next procedure after the impurity content of each component is less than or equal to 0.01 percent in a qualified range.
Comparative example 4A zinc alloy material, unlike example 2, does not contain a lanthanum source and a dysprosium source, and the amounts of the ingredients of the specific components are shown in Table 2.
Heating the gas furnace to 450 ℃, adding pure zinc, gradually heating to 650 ℃, until the pure zinc is completely melted, then gradually heating to 680 ℃, adding an aluminum source and a copper source until the pure zinc and the copper source are completely melted and stirred until the pure zinc and the copper source are uniformly mixed, then heating to 720 ℃, adding a nickel source and a titanium source until the pure zinc and the copper source are completely melted and stirred until the pure zinc and the copper source are uniformly mixed, heating to 780 ℃, adding a cobalt source until the cobalt source and the cobalt source are completely melted and stirred until the pure zinc and the pure zinc are uniformly mixed, then maintaining the furnace temperature at 780 ℃, adding manganese silicide and fully stirring, finally sampling from the furnace, performing stokehole analysis, and performing next procedure after the impurity content of each component is less than or equal to 0.01 percent in a qualified range.
Comparative example 5A zinc alloy material, unlike example 2, does not contain manganese silicide, and the amounts of the specific ingredients are shown in Table 2.
Heating the gas furnace to 450 ℃, adding pure zinc, gradually heating to 650 ℃, until the pure zinc is completely melted, then gradually heating to 680 ℃, adding an aluminum source and a copper source until the pure zinc and the copper source are completely melted and stirred until the pure zinc and the copper source are uniformly mixed, then heating to 720 ℃, adding a nickel source and a titanium source until the pure zinc and the copper source are completely melted and stirred until the pure zinc and the copper source are uniformly mixed, heating to 780 ℃, adding a cobalt source, a lanthanum source and a dysprosium source until the pure zinc and the cobalt source and the dysprosium source are completely melted and stirred until the pure zinc and the dysprosium source are uniformly mixed, finally sampling from the furnace, performing stokehole analysis, wherein the content of each component is within a qualified range, and performing the next procedure after the impurity content is less than or equal to 0.01%.
And (3) detecting the performance of the zinc alloy material:
Samples were tested for the zinc alloy materials of the examples and comparative examples.
The detection method comprises the steps of respectively detecting corrosion resistance rates of samples in seawater, 30# engine oil, tap water, water vapor and 2% NaOH by adopting a weightlessness method, wherein the detection temperature is 25 ℃ and the time is 1000 hours.
The elongation (%) of the sample was measured with reference to GB/T228.1-2010.
Corrosion resistance Rate (g/m 2. H) = (w 0-w 1)/(s 0-s 1)/2*t ]
Wherein, w0 is the sample mass before test (g), w1 is the sample mass after test (g), s0 is the sample surface area before test (m 2), s1 is the sample surface area after test (m 2), and t is the corrosion time (h).
In the above test, three sets of parallel tests were performed for each sample, and the test results were averaged, and the test results are shown in table 3.
Table 3:
As is clear from Table 3, the zinc alloy materials of examples 1 to 3 have low corrosion resistance rates in seawater, 30# engine oil, tap water, steam and 2% NaOH, and have high elongation, which indicates that the zinc alloy materials of examples 1 to 3 have good corrosion resistance and mechanical properties. In particular, the zinc alloy material of example 2 has low corrosion resistance and high elongation in various corrosive environments, and exhibits good corrosion resistance and mechanical properties.
Further, the comparative example 1 does not contain a cobalt source, corrosion resistance and mechanical properties are reduced to a certain extent, which means that the addition of cobalt element has a positive effect on improving the corrosion resistance and mechanical properties of the zinc alloy material, the comparative example 2 does not contain a lanthanum source, corrosion resistance and mechanical properties are also reduced, which means that lanthanum element also contributes to improving the properties of the zinc alloy material, the comparative example 3 does not contain a dysprosium source, the property change is similar to that of the comparative example 2, but the influence degree is slightly smaller, the comparative example 4 does not contain a lanthanum source and a dysprosium source at the same time, the corrosion resistance and mechanical properties are reduced more remarkably, which means that lanthanum element and dysprosium element jointly act on improving the properties of the zinc alloy material, the comparative example 5 does not contain manganese silicide, and the corrosion resistance and mechanical properties are also reduced to a certain extent, which means that manganese silicide plays a key role in improving the corrosion resistance and mechanical properties of the zinc alloy material. Therefore, the corrosion resistance of the zinc alloy material is obviously improved through the alloy components with specific proportions and the fine preparation process.
The present embodiment is only for explanation of the present application and is not to be construed as limiting the present application, and modifications to the present embodiment, which may not creatively contribute to the present application as required by those skilled in the art after reading the present specification, are all protected by patent laws within the scope of claims of the present application.
Claims (6)
1. The corrosion-resistant zinc alloy material is characterized by comprising, by mass, 8% -11% of aluminum, 0.25% -0.45% of copper, 0.1% -0.3% of nickel, 0.01% -0.02% of titanium, 0.01% -0.03% of cobalt, 0.01% -0.03% of lanthanum, 0.001% -0.002% of dysprosium, 0.003% -0.005% of manganese silicide and the balance of zinc;
The particle size of the manganese silicide is 10-30 nm;
The aluminum source is Zn-Al-Cu ternary intermediate alloy, the copper source is electrolytic copper and Zn-Al-Cu ternary intermediate alloy, the nickel source is Zn-Ni-Ti ternary intermediate alloy, the titanium source is Zn-Ni-Ti ternary intermediate alloy, the cobalt source is Co-Zn intermediate alloy, the lanthanum source is La-Zn intermediate alloy, and the dysprosium source is pure dysprosium.
2. The corrosion-resistant zinc alloy material according to claim 1, comprising the following components in percentage by mass: 9.476% aluminum, 0.382% copper, 0.217% nickel, 0.018% titanium, 0.023% cobalt, 0.019% lanthanum, 0.001% dysprosium, 0.004% manganese silicide, and the balance zinc.
3. A preparation method of the corrosion-resistant zinc alloy material according to any one of claims 1-2 is characterized by comprising the following steps of respectively taking an aluminum source, a copper source, a nickel source, a titanium source, a cobalt source, a rare earth source, manganese silicide and pure zinc according to mass percentages, smelting the aluminum source, the copper source, the nickel source, the titanium source, the cobalt source, the lanthanum source, the dysprosium source, the manganese silicide and the pure zinc, sampling from a furnace, performing stokehold analysis, performing next working procedure after passing, casting the melt obtained in step 2, obtaining an ingot, and naturally cooling after preserving the heat of the ingot obtained in step 3 for 2-3 hours, so as to obtain the corrosion-resistant zinc alloy material.
4. The method for preparing the corrosion-resistant zinc alloy material according to claim 3, wherein the specific operation of the step 2 is that firstly, a gas furnace is heated to 450-500 ℃, pure zinc is added, the temperature is gradually raised to 600-650 ℃ until the pure zinc is completely melted, then the temperature is gradually raised to 650-700 ℃, an aluminum source and a copper source are added until the pure zinc is completely melted and stirred until the pure zinc is uniformly mixed, then the temperature is raised to 700-750 ℃, a nickel source and a titanium source are added until the pure zinc is completely melted and stirred until the pure zinc is uniformly mixed, then the temperature is raised to 750-800 ℃, a cobalt source, a lanthanum source and a dysprosium source are added until the pure zinc is completely melted and stirred until the pure zinc is uniformly mixed, then the temperature is kept at 750-800 ℃, finally, the furnace is sampled, and the next procedure is carried out after the pure zinc is qualified.
5. The method for preparing the corrosion-resistant zinc alloy material according to claim 3, wherein the casting temperature in the step 3 is 680-720 ℃.
6. The method for preparing a corrosion-resistant zinc alloy material according to claim 3, wherein the heat preservation temperature in the step 4 is 350-400 ℃.
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| JP2002004022A (en) * | 2000-04-18 | 2002-01-09 | Nippon Steel Corp | Plating product excellent in corrosion resistance and manufacturing method thereof |
| CN106834806A (en) * | 2017-02-24 | 2017-06-13 | 中南大学 | A kind of corrosion-resistant zinc alloy and preparation method thereof |
| CN108179321A (en) * | 2017-12-31 | 2018-06-19 | 广德亚太铸造有限公司 | A kind of metal brake pan coating zinc alloy material |
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| JP2002004022A (en) * | 2000-04-18 | 2002-01-09 | Nippon Steel Corp | Plating product excellent in corrosion resistance and manufacturing method thereof |
| CN106834806A (en) * | 2017-02-24 | 2017-06-13 | 中南大学 | A kind of corrosion-resistant zinc alloy and preparation method thereof |
| CN108179321A (en) * | 2017-12-31 | 2018-06-19 | 广德亚太铸造有限公司 | A kind of metal brake pan coating zinc alloy material |
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