Surface treatment method of titanium alloy thin material

Abstract

The invention provides a surface treatment method of a titanium alloy thin material. The surface treatment method comprises the following steps that firstly, glass powder, an adhesive and water are mixed uniformly, and a mixed solution is obtained; secondly, the titanium alloy thin material is placed into an electric furnace to be preheated, the mixed solution is evenly sprayed to the surface of the preheated titanium alloy thin material, and then heat treatment is conducted on the titanium alloy thin material coated with the mixed solution; and thirdly, polishing treatment is conducted on the titanium alloy thin material subjected to heat treatment with nylon sanding felt, and the titanium alloy thin material subjected to surface treatment is obtained. By the adoption of the surface treatment method of the titanium alloy thin material, the problem that during heat treatment of the titanium alloy thin material, deep oxidization skin is generated on the surface of the titanium alloy thin material and is difficult to remove can be effectively solved, metal consumption is reduced, and meanwhile, the product surface quality can be better guaranteed; and the method is simple, and the cost is low.

Description

technical field [0001] The invention belongs to the technical field of titanium alloy material processing, and in particular relates to a surface treatment method for thin titanium alloy materials. Background technique [0002] As a light metal alloy, titanium alloy is widely used in aerospace, chemical, ship and other industries, especially in the field of aerospace, due to its high specific strength, corrosion resistance, non-magnetic, weldability and other excellent properties. [0003] As we all know, titanium is a highly active metal element, which can easily form oxides with oxygen in the air. Due to the strong surface activity of titanium alloy parts, a layer of 0.0025mm to 0.004mm thick oxide scale is formed on the surface of titanium alloy materials after heat treatment above 500 °C. The oxide film on the surface of titanium alloy is not a single structure. At the interface between oxide film and titanium metal, TiO 2 、Ti 2 o 3 It is mainly composed of TiO and ...

AI Technical Summary

Problems solved by technology

The alkali and pickling method is a method of soaking in the specified acid and alkali solution concentration and time to remove the oxide scale, but this method has incomplete oxide scale removal and "hydrogen absorption" phenomenon, it is difficult to ensure the surface quality of the product, and serious environmental pollution

Residual oxide skin seriously affects the surface quality and normal delivery of titanium alloy parts

With mechanical grinding, scratches are prone to appear on the substrate, and the surface of the substrate is easily damaged by sandblasting, and a surface hardening layer will be produced at the same time, thereby reducing the mechanical and corrosion properties of the material, and these two methods are time-consuming and laborious

[0005] Titanium alloy products generally require heat treatment to reach a certain performance index before they can be used. Therefore, the heat treatment process is essential. In view of the problem that the scale produced by titanium alloy parts is difficult to remove during heat treatment, researchers have also taken various measures, such as control The atmosphere in the heating furnace is vacuum treated, but the effect is not ideal. The cost of vacuum heat treatment is extremely high, and the cooling rate cannot be controlled. Therefore, a new processing technology is urgently needed to meet the surface requirements of parts heat treatment.