Tantalum tungsten alloy (Taw alloy), currently commonly used grades Ta10W and T2.5W. tantalum tungsten alloy is a high-density material, which has a high melting point, high tensile strength, good dynamic ductility and corrosion resistance and other characteristics. Tantalum-tungsten alloys are used in chemical The tantalum-tungsten alloy has far-reaching application prospects in the fields of chemical corrosion prevention, machinery, aerospace and military industry.Our tantalum 10 tungsten is produced according to this process.
1. Mixing powder
The superfine tantalum powder and tungsten powder are weighed and mixed in the required proportion, then the mixed powder is placed in a drum mixer and mixed evenly to obtain the mixed powder;
2.Press moulding
The fine powder is loaded into the grinding tool and pressed into shape:;
3. Sintering
The alloy bars are placed in a vacuum sintering furnace and heated and sintered under vacuum to produce a rough ingot billet;
4. Smelting
The ingots are melted several times in a vacuum electron beam furnace or a vacuum electric arc furnace to produce the ingots;
5.Improving the performance of the finished ingots
The ingots are heated and forged several times in a high-frequency furnace, and the surface oxidation is processed to produce the finished ingots;
According to the size of the profile, the ingot is reloaded and forged; The finished tantalum-tungsten alloy is rolled or forged several times, annealed in vacuum several times to obtain a bar or plate, then machined and polished to obtain a finished tantalum-tungsten alloy with good properties.
Preparation methods The ingot billets are mainly prepared by two or more vacuum electron beam melting or vacuum arc melting, then forged or extruded at temperatures above 1200°C and rolled and drawn at temperatures below 500°C. The products can be made into plates, bars, wires, tubes and so on.
Cutting, welding, heat treatment and coating are the same as for tantalum alloys.
