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How is Inconel625 made?

Views : 96
Author : Ada
Update time : 2023-02-13 13:52:35
What is Inconel625?
Inconel625 is an alloy with a density of 8.4 g/cm3 and a melting point of 1290-1350. It has excellent corrosion resistance to inorganic acids and has excellent corrosion resistance to various corrosive media in oxidation and reduction environments. High-Temperature Inconel625 Alloy Rod is a solid solution reinforced nickel-based deformation superalloy with molybdenum and niobium as the main strengthening elements.
625 alloy shows excellent corrosion resistance in many media. It has excellent resistance to pitting corrosion, crevice corrosion, intergranular corrosion, and erosion in chloride medium.
manufacturing process of Inconel 625
Cr-Ni-Fe alloy 625 containing little or no aluminum and titanium is generally smelted by an electric arc furnace or non-vacuum induction furnace. When Cr-Ni-Fe alloy 625 with high aluminum and titanium content is smelted in the atmosphere, the burning loss of elements is difficult to control, and more gas and inclusions enter, so vacuum smelting should be adopted. In order to further reduce the content of inclusions and improve the distribution of inclusions and the crystal structure of ingots, a duplex process combining smelting and secondary remelting can be adopted. The main means of smelting are electric arc furnaces, vacuum induction furnaces, and non-vacuum induction furnaces; The main means of remelting are consumable vacuum furnaces and electro-slag furnaces.
Forging cogging can be used for solid solution-strengthened alloys and alloy ingots with low aluminum and titanium content (the total amount of aluminum and titanium is less than 4.5%); Alloys with high aluminum and titanium content are generally extruded or rolled into billets, and then hot rolled into products, and some products need further cold rolling or cold drawing. Alloy ingots or cakes with larger diameters need to be forged by the hydraulic press or fast-forging hydraulic press.
Alloys with a high alloying degree and difficult deformation are widely used in precision casting, such as casting turbine blades and guide blades. In order to reduce or eliminate grain boundaries perpendicular to the stress axis and porosity in cast alloys, directional crystallization technology has been developed in recent years. In this process, the grains grow along a crystallization direction during the solidification of the alloy to obtain parallel columnar crystals without transverse grain boundaries. The first technological condition to achieve directional crystallization is to establish and maintain a large enough axial temperature gradient and good axial heat dissipation conditions between liquidus and solidus. In addition, in order to eliminate all grain boundaries, it is necessary to study the manufacturing process of single-crystal blades.
The powder metallurgy process is mainly used to produce precipitation-strengthened and oxide-dispersion-strengthened Inconel 625. This process can make the cast Inconel 625, which can not be deformed, generally, obtain plasticity or even superplasticity.
The properties of comprehensively treated Inconel 625 are closely related to the microstructure of the alloy, while Inconel 625, whose microstructure is controlled by metal heat treatment, generally needs heat treatment. Precipitation-strengthened alloys are usually treated by solution treatment and aging treatment. Solution-strengthened alloys are only treated by solution treatment. Some alloys have to undergo one or two intermediate treatments before aging treatment. The purpose of solution treatment is firstly to make the second phase dissolve into the alloy matrix so as to make γ, carbide (cobalt-based alloy), and other strengthening phases uniformly precipitate during aging treatment, and secondly to obtain appropriate grain size to ensure high-temperature creep and durability.
The solution treatment temperature is generally 1040~1220. Alloys that are widely used are often treated at 1050~1100 before aging treatment. The main function of intermediate treatment is to precipitate carbides and γ films at grain boundaries to improve the grain boundary state. At the same time, some alloys also precipitate some large γ phases to form a reasonable combination with the fine γ phases precipitated during aging treatment. The purpose of aging treatment is to uniformly precipitate γ phase or carbide (cobalt-based alloy) from a supersaturated solid solution to improve high-temperature strength. The aging treatment temperature is generally 700~1000.
Price of Inconel625
Inconel625 particle size and purity will affect the product's price, and the purchase volume can also affect the cost of Inconel625. A large amount of large amount will be lower. The price of Inconel625 can be found on our company's official website.
Inconel625 supplier
Luoyang Tongrun Nano Technology Co. Ltd.  (TRUNNANO) Luoyang City, Henan Province, China, is a reliable and high-quality global chemical material supplier and manufacturer. It has more than 12 years of experience providing ultra-high quality chemicals and nanotechnology materials, including Inconel625, nitride powder, Inconel625, sulfide powder, and 3D printing powder. If you are looking for high-quality and cost-effective Inconel625, you are welcome to contact us or inquire any time.
 
 
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