Preparation method of TB6 alloy spherical powder

Abstract

The invention discloses a preparation method of TB6 alloy spherical powder. The preparation method comprises the steps that step 1, smelting of a TB6 master alloy bar is carried out; step 2, the diameter of an electrode bar processed through the TB6 alloy bar is 10 mm to 90 mm, and the length of the electrode bar is 100 mm to 1000 mm; step 3, the electrode bar is placed in an inert gas reaction chamber and is rotated at a high speed, the end part of the electrode bar is heated through a plasma gun with the power of 100 KW to 300 KW, and the end part of the electrode bar is molten; and step 4,after atomization, a molten metal flies out under the action of centrifugal force, fine liquid drops are formed, the liquid drops form spherical particles after being quickly cooled in a protective gas, the spherical particles fall into a collector at the bottom of an atomization chamber, and the TB6 alloy spherical powder is obtained. According to the preparation method, the prepared TB6 alloy spherical powder has the characteristics that circularity is high and fluidity is good.

Description

technical field [0001] The invention belongs to the technical field of alloy spherical powder preparation, and in particular relates to a preparation method of TB6 alloy spherical powder. Background technique [0002] As structural metals, titanium and titanium alloys have a series of outstanding advantages such as high specific strength, good corrosion resistance, high temperature resistance, etc., and can be processed by various methods of pressure forming, welding and machining. With the development of titanium alloy research and production, it is widely used in aerospace and other fields, such as key parts such as turbine engines and aircraft frames. [0003] TB6 alloy is a near-β titanium alloy with high V equivalent. It has the advantages of high specific strength, good thermal stability, excellent creep resistance and strong weldability. It is widely used in the manufacture of key components in the aerospace industry. [0004] The production rate of TB6 titanium allo...

AI Technical Summary

Problems solved by technology

[0004] The production rate of TB6 titanium alloy produced by traditional forging and casting methods is low, and it is easy to produce waste, which leads to the high production cost of TB6 alloy.

In addition, traditional casting and forging processes are difficult to directly manufacture parts with complex shapes. After subsequent processing, the material utilization rate (Buy-to-fly-ratio) is further reduced, and the production cycle is greatly increased.

The powder metallurgy preparation method is a near-net shape technology with the advantages of short process flow, high material utilization rate, fine and uniform structure, and controllable composition. It can overcome the defects of traditional processing methods, but powder metallurgy has strict requirements on powder performance. The powder quality and batch stability prepared by traditional methods are generally poor