Method for preparing titanium product through titanium hydride powder

Abstract

The invention discloses a method for preparing a titanium product through titanium hydride powder. The method comprises the following steps that firstly, blank manufacturing is carried out, and the titanium hydride powder is manufactured into a blank material through mold pressing; secondly, dehydrogenation is carried out, the blank material is heated under the protective atmosphere, the temperature rise rate is maintained in 50-200 DEG C / min till the temperature of the blank material is increased to 900-1,200 DEG C, and insulating is carried out for 5-20 minutes; thirdly, molding is carried out, the heated blank material is moved in an extrusion device, extrusion is carried out under a certain pressure and extrusion ratio, and the blank material is molded and solidified to obtain the titanium product through an extrusion mold with a specific inner cavity shape; and fourthly, cooling is carried out, and after extrusion is finished, the titanium product is cooled to the room temperature at the speed of 10-100 DEG C / min and then taken out. The method has the beneficial effects that the cost of raw materials is low, the dehydrogenation speed is high, and the production efficiency and product purity are high; and the technological process is simple, and the large-scale production potential is achieved.

Description

technical field [0001] The invention relates to a method for preparing titanium products, in particular to a method for preparing titanium products by using titanium hydride powder, and belongs to the technical field of nonferrous metal processing. Background technique [0002] As an important non-ferrous metal material, titanium and titanium alloys have been widely used in aerospace vehicles, ships and It is widely used in the manufacture of weapons and other military products. In addition, titanium also has great application potential in industries such as automobile, medical treatment, chemical industry, energy and daily consumption. Therefore, titanium is also called "the rising third metal" and "the metal of the 21st century". [0003] However, due to the high chemical activity of titanium, the difficulty of smelting, high energy consumption, and its poor cold working performance, the production cost of titanium is high, which limits its further application range. In ...

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Problems solved by technology

However, the dehydrogenation process takes a long time, usually several hours to more than ten hours

In addition, due to the high chemical activity of titanium, it is easy to react with impurity elements such as H, O, C, and N in the environment at high temperatures. Therefore, the requirements for the surrounding environment are strict during the production of titanium powder. High-purity The cost of HDH titanium powder is still high

[0006] Titanium powder will inevitably come into contact with impurity elements in the surrounding environment during subsequent processing and consolidation into parts, thereby reacting with each other and reducing product performance (H, O, C, N and other elements are easy to diffuse into the titanium lattice gap, resulting in reduced shaping of titanium)

In the current research, the titanium products prepared by dehydrogenation using titanium hydride as raw material are easy to form holes in the material due to the precipitation of hydrogen in the form of hydrogen gas, resulting in low density of the final product, and are mostly used to prepare porous materials for medical use

The shape of titanium is strong, the cold working performance is poor, and the subsequent machining is difficult, which further increases the cost of titanium parts

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