What are the advantages of induction melting technology for titanium alloy forgings and titanium alloy flanges?

At present, the melting method widely used in China's industry is vacuum consumable electrode arc melting method. Although it can effectively ensure that the alloy liquid has a certain superheat and more accurate alloy melt composition, this method has extremely high quality requirements for the raw material electrode, and the melt pool has a large surface area and a small depth, resulting in a large volatilization loss of high vapor pressure elements (such as Al element), which is not conducive to the control of alloy composition.

The water-cooled copper crucible induction melting method is to melt the copper crucible which is divided and cooled by water under the induction electromagnetic field, which can maximize the advantages of the induction melting method. There is a solid shell layer between the water-cooled copper crucible and the metal melt, which is produced by the solidification of the titanium melt. At this time, the inner lining of the crucible is equivalent to the molten metal, that is, the inner surface of the crucible is the same as the composition of the metal melt, which avoids the pollution of the crucible to the metal melt. With the increase of the number of cold crucible combinations and the input power of the power supply, the strong magnetic field effect promotes the rapid melting of the charge and produces a strong stirring effect, so that the temperature and composition of the metal melt are uniform, and a consistent superheat can be obtained. Because the composition of new titanium alloy and TiAl compound alloy is complicated and the allowable deviation of alloying element is small, it is difficult to meet the requirement of alloy composition by arc melting. Water-cooled crucible induction melting is especially suitable for this work, the melting alloy composition is uniform, interstitial element content of alloy liquid superheat is appropriate, to meet the static and centrifugal casting requirements.