CN111590059A - Infiltration liquid for copper-nickel/iron-nickel alloy and use method and application thereof - Google Patents
Infiltration liquid for copper-nickel/iron-nickel alloy and use method and application thereof Download PDFInfo
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- CN111590059A CN111590059A CN202010465719.8A CN202010465719A CN111590059A CN 111590059 A CN111590059 A CN 111590059A CN 202010465719 A CN202010465719 A CN 202010465719A CN 111590059 A CN111590059 A CN 111590059A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D31/00—Cutting-off surplus material, e.g. gates; Cleaning and working on castings
- B22D31/002—Cleaning, working on castings
- B22D31/005—Sealing or impregnating porous castings
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Abstract
The invention discloses a leaching solution for a copper-nickel/iron-nickel alloy, a use method and application thereof, and the leaching solution comprises the following steps: (1) washing in water bath; (2) soaking; (3) heating; (4) electrifying; (5) vibrating and applying pressure; (6) keeping the pressure and standing; (7) cooling and cleaning; (8) and testing the pressure. The invention has the advantages that the toughness and the density of the material are increased through shot blasting reinforcement and infiltration treatment to increase the wear resistance, and the product can be used at normal temperature and in an ice region (-89 ℃). The method has the beneficial effects that the density of the casting is increased by infiltrating the loose part of the copper-nickel/iron-nickel alloy.
Description
Technical Field
The invention relates to a material preparation method in the field of marine equipment, in particular to a leaching solution for a copper-nickel/iron-nickel alloy, and a use method and application thereof.
Background
At present, because of the influence of the characteristics of materials in casting parts of copper-nickel alloy and iron-nickel alloy in China and worldwide, a part of loose structures exist in the microscopic state of products. Under specific conditions, such as high pressure, high temperature and high cold, the cast structure of the loose structure can cause abnormal phenomena such as leakage. Under the action of the water hammer effect, the structure of the casting can be irreversibly damaged in severe cases. Under this temporarily unsolved technical challenge, engineers have resorted to the use of sodium salts (e.g., sodium silicate) that are passively immersed in micro-porous regions to fill the pores by applying pressure to the workpiece immersed in the sodium silicate liquid. The product can be maintained at normal temperature by filling the sodium salt. However, the common sodium salt material and the construction process still have problems of leakage and the like along with the influence of temperature, vibration, special transportation materials and the like on the common sodium salt material and the construction process because the strength and the weather resistance are low. And once leaked, the casting cannot be repaired again.
Disclosure of Invention
The invention aims to solve the technical problems that the prior casting part of the copper-nickel/iron-nickel alloy has a loose structure which can bring about the result of leakage, and the prior repairing method has a plurality of defects, so that the preparation method and the application of the copper-nickel/iron-nickel alloy material are provided.
The leaching solution is obtained in long-term production practice, has excellent ion exchange performance and weather resistance, and simultaneously has good flowing performance and suspension performance, and the specific technical analysis is as follows:
ion exchange compatibility: ion exchange is itself a chemical and physical adsorption process, the mechanism of action of which is similar to the principle of microporous adsorption of activated carbon. Except that the microporous adsorption of the activated carbon belongs to passive adsorption, while the ion exchange of the invention belongs to active adsorption. The metal particles contained in the leaching solution enter the micropore area to be filled under the action of processes such as electrification, heating, oscillation, chemical solvent and the like and carry out chelation reaction with the part metal, so that stable metal accumulation is formed, and the aim of blocking micropores is fulfilled.
Strength and weather resistance: because the impregnant is composed of metal particles such as Cu, Ni, Si, Mn, Al and the like and a non-metal inorganic carrier, ion exchange is generated between metals after chelation stacking is generated, a reaction similar to welding is generated, and the metals are tightly connected with each other, so that the strength consistent with that of a metal body is formed. Meanwhile, as the components of the infiltration liquid are similar to the materials of the casting body, the infiltration liquid keeps the weather resistance consistent with the body.
An infiltration treatment method of a copper-nickel/iron-nickel alloy comprises the following steps of (1) water bath cleaning: putting the copper-nickel/iron-nickel alloy casting blank which is polished and shot-blasted cleanly into a cleaning pool for water bath treatment, wherein the treatment temperature is 60-85 ℃; (2) and soaking: soaking the copper-nickel/iron-nickel alloy casting blank subjected to water bath treatment in a soaking solution for more than or equal to 40min, wherein the soaking solution comprises less than or equal to 80wt% of Cu, 4-5 wt% of Ni, less than or equal to 2wt% of Si, 0.5-1.2 wt% of Mn, more than or equal to 8wt% of Al and the balance of others; (3) and heating: heating the infiltration liquid to boiling at normal atmospheric pressure, and keeping the immersion for more than or equal to 20 min; (4) and electrifying: switching on a power supply to electrify the copper-nickel/iron-nickel alloy casting blank, so that metal ions in the leaching solution are gathered to the copper-nickel/iron-nickel alloy casting blank and enter the micropore part to complete the filling of the micropores; (5) and oscillating and pressing: moving the copper-nickel/iron-nickel alloy casting blank into a vibration pool, vibrating the copper-nickel/iron-nickel alloy casting blank through magnetic vibration, adjusting the amplitude and the frequency through an oscillator, closing a container, and applying air pressure of more than or equal to 4 kg; (6) keeping the pressure and standing: after the oscillation is finished, keeping the air pressure to be more than or equal to 10 min; (7) and cooling and cleaning: decompressing and taking out the copper-nickel/iron-nickel alloy casting blank to a cleaning pool, and cleaning the surface by normal temperature water at the temperature of less than or equal to 40 ℃; (8) and pressure testing: and (5) testing and testing the copper-nickel/iron-nickel alloy casting blank, and if the pressure is lost, circularly executing the steps (2) - (7).
An infiltration solution for a copper-nickel/iron-nickel alloy comprising: cu of less than or equal to 80wt%, Ni of 4-5 wt%, Si of less than or equal to 2wt%, Mn of 0.5-1.2 wt%, Al of more than or equal to 8wt% and the balance of others.
The application of the infiltration liquid of copper-nickel/iron-nickel alloy is used for treating the copper-nickel/iron-nickel alloy with loose structure.
The method has the beneficial effects that the density of the casting is increased by carrying out infiltration treatment on the loose part of the copper-nickel/iron-nickel alloy.
Drawings
FIG. 1 is a metallographic photograph of a prior art copper-nickel alloy;
FIG. 2 is a metallographic photograph of a copper-nickel alloy after impregnation treatment according to the present invention.
Detailed Description
The technical scheme in the embodiment of the invention is clearly and completely described below with reference to the accompanying drawings. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments based on the embodiments in the present invention, without any inventive work, will be apparent to those skilled in the art from the following description.
The infiltration liquid disclosed by the invention comprises the following components and properties:
| Cu | Ni | Si | Mn | Al | others |
| ≤80% | 4-5% | ≤0.2 | 0.5-1.2% | ≥8% | Balance of |
TABLE 1
Example 1: an infiltration treatment method of a copper-nickel/iron-nickel alloy comprises the following steps of (1) water bath cleaning: putting the copper-nickel/iron-nickel alloy casting blank which is polished and shot-blasted cleanly into a cleaning pool for water bath treatment, wherein the treatment temperature is 60 ℃, and a high-pressure injection method or an ultrasonic treatment method can be adopted to shorten the water bath period; (2) and soaking: soaking the copper-nickel/iron-nickel alloy casting blank subjected to water bath treatment in a soaking solution for more than or equal to 40min, wherein the soaking solution comprises 80wt% of Cu, 4wt% of Ni, 2wt% of Si, 0.5wt% of Mn, 8wt% of Al and the balance of others; (3) and heating: heating the infiltration liquid to boiling at normal atmospheric pressure, and soaking for 20 min; (4) and electrifying: switching on a power supply to electrify the copper-nickel/iron-nickel alloy casting blank, so that metal ions in the leaching solution are gathered to the copper-nickel/iron-nickel alloy casting blank and enter the micropore part, and controlling the electrifying time to complete the filling of the micropores; (5) and oscillating and pressing: moving the copper-nickel/iron-nickel alloy casting blank into a vibration pool, vibrating the copper-nickel/iron-nickel alloy casting blank through magnetic vibration, adjusting the amplitude and the frequency through an oscillator, closing a container, applying 4kg of air pressure, and eliminating casting stress through side effects, thereby being beneficial to processing; (6) keeping the pressure and standing: after the oscillation is finished, keeping the air pressure for 10 min; (7) and cooling and cleaning: relieving pressure, taking out the copper-nickel/iron-nickel alloy casting blank to a cleaning pool, and cleaning the surface by adopting normal-temperature water at 40 ℃; (8) and pressure testing: and (5) testing and testing the copper-nickel/iron-nickel alloy casting blank, and if pressure loss occurs at the testing part, circularly executing the steps (2) - (7).
Example 2: an infiltration treatment method of a copper-nickel/iron-nickel alloy comprises the following steps of (1) water bath cleaning: putting the copper-nickel/iron-nickel alloy casting blank which is polished and shot-blasted cleanly into a cleaning pool for water bath treatment, wherein the treatment temperature is 85 ℃, and a high-pressure injection method or an ultrasonic treatment method can be adopted to shorten the water bath period; (2) and soaking: soaking the copper-nickel/iron-nickel alloy casting blank subjected to water bath treatment in a soaking solution for more than or equal to 40min, wherein the soaking solution comprises 70wt% of Cu, 5wt% of Ni, 1wt% of Si, 1.2 wt% of Mn, 9wt% of Al and the balance of others; (3) and heating: heating the infiltration liquid to boiling at normal atmospheric pressure, and soaking for 25 min; (4) and electrifying: switching on a power supply to electrify the copper-nickel/iron-nickel alloy casting blank, so that metal ions in the leaching solution are gathered to the copper-nickel/iron-nickel alloy casting blank and enter the micropore part, and controlling the electrifying time to complete the filling of the micropores; (5) and oscillating and pressing: moving the copper-nickel/iron-nickel alloy casting blank into a vibration pool, vibrating the copper-nickel/iron-nickel alloy casting blank through magnetic vibration, adjusting the amplitude and the frequency through an oscillator, closing a container, applying 5kg of air pressure, and eliminating casting stress through side effects, thereby being beneficial to processing; (6) keeping the pressure and standing: after the oscillation is finished, keeping the air pressure for 20 min; (7) and cooling and cleaning: relieving pressure, taking out the copper-nickel/iron-nickel alloy casting blank to a cleaning pool, and cleaning the surface by adopting normal-temperature water at 30 ℃; (8) and pressure testing: and (5) testing and testing the copper-nickel/iron-nickel alloy casting blank, and if pressure loss occurs at the testing part, circularly executing the steps (2) - (7).
The oscillation pool in the invention can also be an ultrasonic oscillation pool. The pressure test is to seal the workpiece, inject water or oil into the inner cavity of the workpiece, keep the pressure for 5min after reaching 6kg of pressure, see that the pressure can not be reduced, and identify the qualified product if the pressure is not reduced. The same pressure test can only reach 3kg for workpieces which are not impregnated by the impregnating solution of the invention, and the leakage pressure is reduced when the pressure test exceeds 3 kg.
As shown in FIG. 1, the conventional Cu-Ni alloy contains many impurities and has a non-uniform structure.
As shown in figure 2, the copper-nickel alloy treated by the method has uniform and fine structure and high compactness.
Claims (3)
1. An infiltration treatment method of a copper-nickel/iron-nickel alloy is characterized by comprising the following steps: it includes (1), water bath washing: putting the copper-nickel/iron-nickel alloy casting blank which is polished and shot-blasted cleanly into a cleaning pool for water bath treatment, wherein the treatment temperature is 60-85 ℃; (2) and soaking: soaking the copper-nickel/iron-nickel alloy casting blank subjected to water bath treatment in a soaking solution for more than or equal to 40min, wherein the soaking solution comprises less than or equal to 80wt% of Cu, 4-5 wt% of Ni, less than or equal to 2wt% of Si, 0.5-1.2 wt% of Mn, more than or equal to 8wt% of Al and the balance of others; (3) and heating: heating the infiltration liquid to boiling at normal atmospheric pressure, and keeping the immersion for more than or equal to 20 min; (4) and electrifying: switching on a power supply to electrify the copper-nickel/iron-nickel alloy casting blank, so that metal ions in the leaching solution are gathered to the copper-nickel/iron-nickel alloy casting blank and enter the micropore part to complete the filling of the micropores; (5) and oscillating and pressing: moving the copper-nickel/iron-nickel alloy casting blank into a vibration pool, vibrating the copper-nickel/iron-nickel alloy casting blank through magnetic vibration, adjusting the amplitude and the frequency through an oscillator, closing a container, and applying air pressure of more than or equal to 4 kg; (6) keeping the pressure and standing: after the oscillation is finished, keeping the air pressure to be more than or equal to 10 min; (7) and cooling and cleaning: decompressing and taking out the copper-nickel/iron-nickel alloy casting blank to a cleaning pool, and cleaning the surface by normal temperature water at the temperature of less than or equal to 40 ℃; (8) and pressure testing: and (5) testing and testing the copper-nickel/iron-nickel alloy casting blank, and if the pressure is lost, circularly executing the steps (2) - (7).
2. The infiltration liquid for the copper-nickel/iron-nickel alloy is characterized by comprising the following components in parts by weight: it includes: cu of less than or equal to 80wt%, Ni of 4-5 wt%, Si of less than or equal to 2wt%, Mn of 0.5-1.2 wt%, Al of more than or equal to 8wt% and the balance of others.
3. The use of the infiltration solution of cupronickel/iron-nickel alloy according to claim 2, characterized in that: it is used for treating copper-nickel/iron-nickel alloy with loose structure.
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| CN202010465719.8A CN111590059A (en) | 2020-05-28 | 2020-05-28 | Infiltration liquid for copper-nickel/iron-nickel alloy and use method and application thereof |
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Citations (6)
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| CN87104363A (en) * | 1987-06-23 | 1988-08-31 | 国营吉林柴油机厂 | A kind of matching method of new infiltration liquid of casting parts |
| CN101314824A (en) * | 2007-06-01 | 2008-12-03 | 哈尔滨工业大学 | Method for producing metal-based composite material |
| CN105348452A (en) * | 2015-12-07 | 2016-02-24 | 因普雷浸渗科技（苏州）有限公司 | Water-soluble organic impregnant |
| CN105903937A (en) * | 2016-05-12 | 2016-08-31 | 安徽纯启动力机械有限公司 | Vacuum pressure infiltration treatment process for aluminum alloy castings |
| CN107245745A (en) * | 2017-06-12 | 2017-10-13 | 歌尔股份有限公司 | Die casting surface treatment method and die casting |
| CN110355353A (en) * | 2019-06-12 | 2019-10-22 | 段耀祖 | A kind of preparation method of cracking resistance gap type metal infiltration agent material |
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2020
- 2020-05-28 CN CN202010465719.8A patent/CN111590059A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN87104363A (en) * | 1987-06-23 | 1988-08-31 | 国营吉林柴油机厂 | A kind of matching method of new infiltration liquid of casting parts |
| CN101314824A (en) * | 2007-06-01 | 2008-12-03 | 哈尔滨工业大学 | Method for producing metal-based composite material |
| CN105348452A (en) * | 2015-12-07 | 2016-02-24 | 因普雷浸渗科技（苏州）有限公司 | Water-soluble organic impregnant |
| CN105903937A (en) * | 2016-05-12 | 2016-08-31 | 安徽纯启动力机械有限公司 | Vacuum pressure infiltration treatment process for aluminum alloy castings |
| CN107245745A (en) * | 2017-06-12 | 2017-10-13 | 歌尔股份有限公司 | Die casting surface treatment method and die casting |
| CN110355353A (en) * | 2019-06-12 | 2019-10-22 | 段耀祖 | A kind of preparation method of cracking resistance gap type metal infiltration agent material |
Non-Patent Citations (5)
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| 兰银在等: "浸渗技术在铝合金机体铸件中的应用", 《铸造技术》 * |
| 张铁成: "《最新新型工程材料生产新技术应用与新产品开发研制及行业技术标准实用大全 1 涂料与胶粘剂卷》", 30 November 2004, 学苑音像出版社 * |
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