Introduction of basic properties of Ti-Cu composite rod

Titanium and copper composite rod is a metal composite titanium material coated with a certain thickness (generally 1.0~1.2mm) titanium layer around the copper rod. According to its section geometry, it is mainly divided into round, flat, square, rectangular, drum, etc.

This composite titanium will copper excellent conductivity and titanium excellent corrosion resistance integrated, can be in the corrosive working conditions, as a conductor carrying large current, at the same time to ensure the uniformity of current density, eliminate the corrosion of copper conductor caused by electrolyte pollution. Therefore, the Ti-Cu composite rod has become the main component of metal anode electrolytic cell, and has been developed rapidly in the world since its appearance in the 1960s.

Production method of TI-Cu composite rod: simple mechanical assembly or casting and filling method can not meet the high fitting rate and high fitting strength of TI-Cu composite rod.

The titanium and copper composite rod made by hot extrusion method has high strength and good compound fastness, and is not easy to separate titanium and copper.After a certain amount of cold drawing, the surface roughness and bending resistance of the extruded bar are improved, and the dimensional accuracy of the product is also improved. Therefore, the titanium and copper composite rod on the market are mainly produced by hot extrusion + drawing method.

The explosion method is to put the copper rod into the titanium tube first, put the explosive around the titanium tube evenly, and use the detonator to detonate the explosive so that the copper rod and titanium tube under the action of the explosive force to form a composite. But this method of production efficiency is low, the cost is high, the basic nobody uses this method in industrial production at present.

The blast + rolling method is to make the composite bar from the large-size titanium tube and copper bar by the blast method and then the pass rolling method. Compared with the direct explosion method, this method has higher efficiency and lower cost, but it is not suitable for mass production, and can only produce rectangular and flat rods. Whether this method is suitable for the production of Ti-Cu composite rods of other shapes still needs to be further explored.