By TRUNNANO | 03 August 2021 | 0 Comments
Nickel alloy favored by industrial manufacturing
About nickel alloy
Nickel alloy is a nickel-based alloy with other elements added
Nickel alloy has good mechanical, physical, and chemical properties. Adding appropriate elements can improve its oxidation resistance, corrosion resistance, high-temperature strength, and improve certain physical properties.
What is nickel alloy used for?
Nickel alloys for electronics can be divided into two categories, each with several alloys. The first is nickel-magnesium alloy and nickel-silicon alloy, which have high electrical vacuum performance and good corrosion resistance. They can be used as the oxide cathode core of electron tubes. However, during the working process, the oxide layer and the core metal contact surface often A layer of high-resistance compound is formed, thereby reducing the emission ability of the cathode and shortening the life of the electron tube. Therefore, this type of nickel alloy is mainly used as a low-life general radio vacuum tube oxide cathode core. The second type is nickel-tungsten alloy, which has good high-temperature strength and shock resistance and also has excellent electron emission performance. Because this kind of alloy has high stability of oxide layer at working temperature, it is mainly used for manufacturing requirements.
The last type is thermoelectric alloys, which can also be divided into two categories. One is nickel-silicon alloy, which has a large enough thermoelectric potential and thermoelectric potential within the range of 600-1250℃ and has good corrosion resistance, so it is used to make thermoelectrics. Even negative electrode material. The other is nickel-chromium alloy, which has a large enough thermoelectric potential and thermoelectric potential rate in the range of 0-1200℃. The temperature measurement is more sensitive and accurate, and the interchangeability is strong. It is easy to replace and use, the radiation effect is small, and the electric heating is relatively small. Moreover, it is stable, easy to manufacture, low cost, wide temperature measurement range, and has strong oxidation resistance. In addition, high resistivity, low-temperature coefficient of resistance, and good corrosion resistance are also characters of nickel alloy, which is generally used in thermocouple anodes and high resistance instruments, nickel-chromium alloy is currently one of the most typical and basic thermocouple materials.
Some types of nickel alloys
-Nickel-copper alloy 400 The corrosion resistance of nickel-copper alloy 400 is the same as that of nickel. It is best used under reducing conditions and can be attacked by the oxidizing atmosphere. Alloy 400 has very good resistance to corrosion by halogen acids and halogen compounds and is particularly resistant to corrosion by hydrofluoric acid and high-temperature gases rich in fluorine or hydrogen fluoride.
This alloy is widely used in the treatment of sulfuric acid solutions, seawater, and saltwater. Those applications that require higher strength requirements, such as valve and pump parts, are often made of alloy K-500 (N 05500), which is a precipitation hardening modification of alloy 400.
-Nickel-chromium-iron alloy 600 The addition of chromium to the nickel matrix enhances the adaptability of alloy 600 in oxidizing environments. The corrosion resistance to inorganic acids is only moderate, but the corrosion resistance to organic acids alloy 600 is very good. Therefore, it is widely used in the processing of fatty acids, and it is also widely used in the processing and production of strong alkaline chemicals. middle.
Alloy 600 is also regarded as an excellent material that requires both heat resistance and corrosion resistance in high-temperature applications. The excellent performance of the Nickle alloy in a high-temperature halogen environment makes it the best material choice for organic chloride processing. In other high-temperature degradation processes, alloy 600 has been proven to have excellent oxidation resistance, carburization resistance and nitriding properties.
-Nickel-Chromium-Molybdenum Alloy 625 The addition of molybdenum to nickel-chromium alloys enhances the corrosion resistance to oxidizing and reducing inorganic acids and salts. The addition of nickel makes the alloy have pitting corrosion and crevice corrosion caused by milk hydrated chloride. Alloy 625 is a material with excellent fatigue resistance. Alloy 625LCF is a modified steel grade of 625, which has the required performance of bellows. The difference is that it has excellent resistance to low cycle fatigue and thermal fatigue.
Nickel Alloy Beneficial Qualities
Nickel alloy material products provide numerous advantages over standard metals. The several different types of elements within the nickel alloy allow it to take on characteristics not offered by standard metals. Some of the advantages that nickel alloys provide include:
Nickel alloy is a nickel-based alloy with other elements added
Nickel alloy has good mechanical, physical, and chemical properties. Adding appropriate elements can improve its oxidation resistance, corrosion resistance, high-temperature strength, and improve certain physical properties.
What is nickel alloy used for?
Nickel alloys for electronics can be divided into two categories, each with several alloys. The first is nickel-magnesium alloy and nickel-silicon alloy, which have high electrical vacuum performance and good corrosion resistance. They can be used as the oxide cathode core of electron tubes. However, during the working process, the oxide layer and the core metal contact surface often A layer of high-resistance compound is formed, thereby reducing the emission ability of the cathode and shortening the life of the electron tube. Therefore, this type of nickel alloy is mainly used as a low-life general radio vacuum tube oxide cathode core. The second type is nickel-tungsten alloy, which has good high-temperature strength and shock resistance and also has excellent electron emission performance. Because this kind of alloy has high stability of oxide layer at working temperature, it is mainly used for manufacturing requirements.
The last type is thermoelectric alloys, which can also be divided into two categories. One is nickel-silicon alloy, which has a large enough thermoelectric potential and thermoelectric potential within the range of 600-1250℃ and has good corrosion resistance, so it is used to make thermoelectrics. Even negative electrode material. The other is nickel-chromium alloy, which has a large enough thermoelectric potential and thermoelectric potential rate in the range of 0-1200℃. The temperature measurement is more sensitive and accurate, and the interchangeability is strong. It is easy to replace and use, the radiation effect is small, and the electric heating is relatively small. Moreover, it is stable, easy to manufacture, low cost, wide temperature measurement range, and has strong oxidation resistance. In addition, high resistivity, low-temperature coefficient of resistance, and good corrosion resistance are also characters of nickel alloy, which is generally used in thermocouple anodes and high resistance instruments, nickel-chromium alloy is currently one of the most typical and basic thermocouple materials.
Some types of nickel alloys
-Nickel-copper alloy 400 The corrosion resistance of nickel-copper alloy 400 is the same as that of nickel. It is best used under reducing conditions and can be attacked by the oxidizing atmosphere. Alloy 400 has very good resistance to corrosion by halogen acids and halogen compounds and is particularly resistant to corrosion by hydrofluoric acid and high-temperature gases rich in fluorine or hydrogen fluoride.
This alloy is widely used in the treatment of sulfuric acid solutions, seawater, and saltwater. Those applications that require higher strength requirements, such as valve and pump parts, are often made of alloy K-500 (N 05500), which is a precipitation hardening modification of alloy 400.
-Nickel-chromium-iron alloy 600 The addition of chromium to the nickel matrix enhances the adaptability of alloy 600 in oxidizing environments. The corrosion resistance to inorganic acids is only moderate, but the corrosion resistance to organic acids alloy 600 is very good. Therefore, it is widely used in the processing of fatty acids, and it is also widely used in the processing and production of strong alkaline chemicals. middle.
Alloy 600 is also regarded as an excellent material that requires both heat resistance and corrosion resistance in high-temperature applications. The excellent performance of the Nickle alloy in a high-temperature halogen environment makes it the best material choice for organic chloride processing. In other high-temperature degradation processes, alloy 600 has been proven to have excellent oxidation resistance, carburization resistance and nitriding properties.
-Nickel-Chromium-Molybdenum Alloy 625 The addition of molybdenum to nickel-chromium alloys enhances the corrosion resistance to oxidizing and reducing inorganic acids and salts. The addition of nickel makes the alloy have pitting corrosion and crevice corrosion caused by milk hydrated chloride. Alloy 625 is a material with excellent fatigue resistance. Alloy 625LCF is a modified steel grade of 625, which has the required performance of bellows. The difference is that it has excellent resistance to low cycle fatigue and thermal fatigue.
Nickel Alloy Beneficial Qualities
Nickel alloy material products provide numerous advantages over standard metals. The several different types of elements within the nickel alloy allow it to take on characteristics not offered by standard metals. Some of the advantages that nickel alloys provide include:
- Excellent mechanical properties
- Good strength
- Low gas content
- Low vapor pressure
- Magnetic properties
- High thermal and electrical conductivity
About the preparation method of nickel alloy
Inconel718 alloy is a difficult-to-process material in the field of nickel alloy mechanical processing. It needs to go through a series of steps.
1. The surface of the workpiece must be cleaned before and during the healing process to keep the surface clean. If the heating environment contains sulfur, phosphorus, lead, or other low melting point metals, Inconel718 alloy will become brittle. Impurities come from marking paint, chalk, lubricating oil, water, fuel, etc. The sulfur content of the fuel should be lower than that. For example, the impurity content of liquefied gas and natural gas should be less than 0.1%, the sulfur content of city gas should be less than 0.25g/m3, and the sulfur content of petroleum gas should be less than 0.5%.
The heating electric furnace should have more accurate temperature control ability, the furnace gas must be neutral or weakly alkaline, and the oxidation-reduction fluctuation of the furnace gas composition should be prevented.
2. The suitable hot working temperature of Inconel718 alloy is 1120-900℃, and the cooling method can be water quenching or other rapid cooling methods. It should be annealed in time after hot working to ensure the best performance. During thermal processing, the material should be heated to the upper limit of the processing temperature. In order to ensure plasticity during processing, the final processing temperature when the deformation reaches 20% should not be lower than 960℃.
3. Cold working should be carried out after solution treatment. The work hardening rate of Inconel718 is larger than that of austenitic stainless steel, so the processing equipment should be adjusted accordingly, and there should be an intermediate annealing process in the cold working process.
Heat treatment
Different solution treatment and aging treatment processes will lead to different material properties. Due to the low diffusion rate of the γ" phase, Inconel718 alloy can obtain the best mechanical properties after long-term aging treatment.
4. The oxide near the weld of the Inconel718 workpiece is more difficult to remove than stainless steel. Need to sand with a fine sanding belt. Before pickling in a mixed acid of nitric acid and hydrofluoric acid, a sandpaper or salt bath should be used to remove oxides. handle.
5. The mechanical processing of Inconel718 needs to be carried out after solution treatment, and work hardening of the material should be considered. Unlike austenitic stainless steel, Inconel718 is suitable for low surface cutting speeds.
6. Precipitation hardening Inconel718 alloy is very suitable for welding, and there is no tendency to crack after welding. Weldability, ease of processing, and high strength are the main advantages of this material.
Inconel718 is suitable for arc welding, plasma welding, etc. The surface of the material should be clean before welding, free of oil, powder, etc., and the bright metal should be polished within 25mm of the weld.
Nickel alloy Supplier
TRUNNANO (aka. Luoyang Tongrun Nano Technology Co. Ltd.) is a trusted global chemical material supplier & manufacturer with over 12 years of experience in providing super high-quality chemicals and Nanomaterials. Currently, our company has successfully developed a series of materials. The nickel alloy produced by our company has high purity, fine particle size, and impurity content. For the latest price of nickel alloy, send us an email or click on the needed products to send an inquiry.
Inconel718 alloy is a difficult-to-process material in the field of nickel alloy mechanical processing. It needs to go through a series of steps.
1. The surface of the workpiece must be cleaned before and during the healing process to keep the surface clean. If the heating environment contains sulfur, phosphorus, lead, or other low melting point metals, Inconel718 alloy will become brittle. Impurities come from marking paint, chalk, lubricating oil, water, fuel, etc. The sulfur content of the fuel should be lower than that. For example, the impurity content of liquefied gas and natural gas should be less than 0.1%, the sulfur content of city gas should be less than 0.25g/m3, and the sulfur content of petroleum gas should be less than 0.5%.
The heating electric furnace should have more accurate temperature control ability, the furnace gas must be neutral or weakly alkaline, and the oxidation-reduction fluctuation of the furnace gas composition should be prevented.
2. The suitable hot working temperature of Inconel718 alloy is 1120-900℃, and the cooling method can be water quenching or other rapid cooling methods. It should be annealed in time after hot working to ensure the best performance. During thermal processing, the material should be heated to the upper limit of the processing temperature. In order to ensure plasticity during processing, the final processing temperature when the deformation reaches 20% should not be lower than 960℃.
3. Cold working should be carried out after solution treatment. The work hardening rate of Inconel718 is larger than that of austenitic stainless steel, so the processing equipment should be adjusted accordingly, and there should be an intermediate annealing process in the cold working process.
Heat treatment
Different solution treatment and aging treatment processes will lead to different material properties. Due to the low diffusion rate of the γ" phase, Inconel718 alloy can obtain the best mechanical properties after long-term aging treatment.
4. The oxide near the weld of the Inconel718 workpiece is more difficult to remove than stainless steel. Need to sand with a fine sanding belt. Before pickling in a mixed acid of nitric acid and hydrofluoric acid, a sandpaper or salt bath should be used to remove oxides. handle.
5. The mechanical processing of Inconel718 needs to be carried out after solution treatment, and work hardening of the material should be considered. Unlike austenitic stainless steel, Inconel718 is suitable for low surface cutting speeds.
6. Precipitation hardening Inconel718 alloy is very suitable for welding, and there is no tendency to crack after welding. Weldability, ease of processing, and high strength are the main advantages of this material.
Inconel718 is suitable for arc welding, plasma welding, etc. The surface of the material should be clean before welding, free of oil, powder, etc., and the bright metal should be polished within 25mm of the weld.
Nickel alloy Supplier
TRUNNANO (aka. Luoyang Tongrun Nano Technology Co. Ltd.) is a trusted global chemical material supplier & manufacturer with over 12 years of experience in providing super high-quality chemicals and Nanomaterials. Currently, our company has successfully developed a series of materials. The nickel alloy produced by our company has high purity, fine particle size, and impurity content. For the latest price of nickel alloy, send us an email or click on the needed products to send an inquiry.
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