K477 casting superalloy is a new type of superalloy, which has excellent heat resistance, oxidation resistance, corrosion resistance and wear resistance at high temperatures, and is widely used in aviation, aerospace, metallurgy, chemical industry and other fields.
1. A comprehensive introduction to K477 casting superalloy
K477 casting superalloy is a superalloy made of nickel as the main base material and chromium, molybdenum, tungsten and other alloying elements. The material has excellent performance at high temperatures, can be used stably for a long time at high temperatures of 1200, and has good oxidation, corrosion and wear resistance. Due to its excellent properties, K477 casting superalloy has become one of the important materials in aviation, aerospace, metallurgy, chemical industry and other fields.
The main components of K477 cast superalloy are shown in the following table:
Ingredient | ni | cr | mo | co | w | fe | ti | al | c | b | zr | y | mg | mn
Mass fraction (%)550~61.0 | 15.0~18.0 | 6.0~8.0 | 3.0~5.0 | 3.0~5.0 | 2.0 | 2.0 | 1.5 | 0.08 | 0.01 | 0.05 | 0.02 | 0.01 | 0.5
2. Characteristics of K477 casting superalloy
1.High temperature resistance:K477 casting superalloy has good heat resistance at high temperatures, and can be used stably for a long time at high temperatures of 1200.
2.Oxidation Resistance:K477 casting superalloy is able to react with oxygen at high temperatures to form a dense oxide film, which makes it have good oxidation resistance.
3.Corrosion resistance:K477 cast superalloy is resistant to the erosion of various corrosive media, including acids, alkalis, oxides, etc., at high temperatures.
4.Anti-abrasion properties:K477 cast superalloy has excellent anti-wear properties and can be used at high temperatures for a long time without wear.
5.Heat treatment performance:The heat treatment performance of K477 casting superalloy is good, and heat treatment can be carried out by heating, cooling, etc., so as to improve its mechanical properties.
3. Mechanical properties of K477 casting superalloy
The mechanical properties of K477 casting superalloy mainly include tensile strength, yield strength, elongation and hardness. The following is the mechanical property data of K477 cast superalloy:
Metrics |Tensile Strength (MPa) |Yield Strength (MPa) |Elongation (%), hardness (hb).
Numeric | 950 | 550 | 20 | 300
Fourth, the problems encountered in the use of K477 casting superalloy
In the process of using K477 casting superalloy, some problems may be encountered, mainly including thermal cracking, deformation, cracking, etc. The emergence of these problems is mainly caused by the uneven structure of the material and improper processing technology. Therefore, appropriate process measures should be taken to improve the stability and reliability of the material.
5. Application of K477 casting superalloy
K477 casting superalloy has a wide range of applications in aviation, aerospace, metallurgy, chemical industry and other fields, and is often used in the manufacture of blades, wheels, combustion chambers, nozzles and other parts at high temperatures. In addition, K477 casting superalloy can also be made into plates, round bars, forgings, seamless tubes, forging rings and other products for various high-temperature occasions.
6. Preparation method of K477 casting superalloy
The preparation of K477 casting superalloy mainly includes two methods: casting and forging. Casting methods include vacuum gas shielded melting, vacuum pressure casting, directional solidification, etc. Forging methods include hot forging, cold forging, isothermal forging, etc.
7. Smelting process of K477 casting superalloy
The smelting process of K477 casting superalloy mainly includes the selection of materials and the control of the smelting process. In the smelting process, it is necessary to pay attention to the ratio of materials, melting temperature, holding time, melt filtration and other issues to ensure the quality and performance of the final material.
8. Processing method of K477 casting superalloy
The processing methods of K477 casting superalloy mainly include cold rolling, hot rolling and cold drawing. In the process of processing, it is necessary to pay attention to the control of parameters such as processing temperature, processing pressure, and processing speed to ensure the microstructure and properties of the material.
9. Experimental methods and conclusions of K477 casting superalloys
The experimental methods of K477 casting superalloy mainly include metallographic structure analysis, mechanical property test, heat treatment test, etc. Through experiments, the microstructure, mechanical properties, heat treatment effect and other related conclusions of K477 casting superalloy can be obtained, which can provide a reference for the production and application of materials.
10. The difference between casting and forging
Casting is a process in which molten metal or alloy is poured into a mold for forming, and is mainly used to make castings of various shapes. Forging is a process in which a metal or alloy is heated to a certain temperature and then shaped by hammering or pressure, and is mainly used to make forgings of various shapes.
Ten.
1. Summary
Through a comprehensive introduction, characteristics, mechanical properties and problems encountered in the use of K477 casting superalloy, we can see that K477 casting superalloy has good performance and wide application prospects at high temperatures. At the same time, we also need to further strengthen the research of K477 casting superalloy, and continuously optimize its production process and processing technology to meet the needs of different fields.