[ Source：　|　Author：This station　|　Publication Time：2018-03-01 |　Browse：286Number ]

At present, the industrial method for producing titanium metal is Raul method, and the product is titanium sponge. Preparation of titanium is the traditional process of sponge titanium by casting into ingots, and then processed into titanium. Click here, the main steps from the mining to titanium process:

Titanium -> Mining -> Mineral processing -> Concentrate -> Enrichment -> Titaniferous -> Chlorination -> Crude TiCl4 -> Refining -> Pure TiCl4 -> Magnesium reduction -> Titanium sponge -> Casting -> Titanium Ingots -> Machining -> Titanium or Titanium Parts If the mining is made of rutile in the above steps, it is not necessary to enrich the titanium ingot. In addition, the casting operation should belong to the metallurgical process, but sometimes classified as processing technology.

The process of processing refers to the plastic processing and casting terms. Plastic processing methods include forging, extrusion, rolling, stretching and so on. It can be processed into a variety of titanium ingots pie, ring, plate, pipe, bar, profiles and other products, but also can be made using casting methods of various shapes of parts and components.

Titanium and titanium alloy plastic deformation with large deformation resistance; poor plasticity at room temperature, yield and ultimate strength limit ratio, rebound, sensitive to the gap, the deformation process is easy and mold bonding, heating and easy to absorb harmful gases, etc., Plastic processing than steel, copper is difficult.

Therefore, the processing of titanium and titanium alloys must consider these characteristics.

Titanium plastic processing, soil size unlimited, but also mass production, but the finished product rate is low, resulting in a large number of scrap waste residue.

For the titanium plastic processing of the above shortcomings, in recent years the development of titanium powder metallurgy process. Titanium powder metallurgy process and the same common powder metallurgy, but the sintering must be carried out under vacuum. It applies to the production of large quantities, small size parts, especially for the production of complex parts. This method almost no need to go through the processing, high yield, can make full use of titanium scrap as raw material, but also can reduce production costs, but can not produce large-size titanium pieces. Titanium powder metallurgy process: titanium powder (or titanium alloy powder) -> screening -> mixing -> pressing forming -> sintering -> auxiliary processing -> titanium products.

The principle of titanium production process

In addition to pure titanium titanium, the world has produced nearly 30 kinds of grades of titanium alloy. The most widely used titanium alloys are Ti-6Al-4V, Ti-5Al-2.5Sn and the like.