With the development of vacuum technology and the application of computer, VAR method has quickly become a mature industrial production technology of titanium, and most of today's
titanium ingots are produced by this method. . The distinctive features of the VAR method are low power consumption, high melting rate and good quality reproducibility. The ingots smelted by the VAR method have good crystallographic structure and uniform chemical composition. Usually, the finished ingot should be smelted by the VAR method. At least two remelting.
The production of titanium ingots by the VAR method is basically similar to the processes used by manufacturers all over the world. The difference lies in the use of different electrode preparation methods and equipment. Electrode preparation can be divided into three categories. One is the use of batch-feeding and continuous pressing. The electrode welding process is excluded: the second is to press a single piece of electrode and tailor it to form a consumable electrode. And through plasma arc welding or vacuum welding to weld into one; the third is to use other smelting methods to prepare cast electrodes.
