What Are The Advantages Of Induction Melting Technology For Titanium Alloy Forgings And Titanium Alloy Flanges?

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

At present, the smelting method widely used in China's industry is the vacuum consumable electrode arc smelting method. Although it can effectively ensure that the alloy liquid has a certain degree of superheat and a relatively accurate alloy melt composition, this method has extremely high requirements for the quality of the raw material electrode, and the surface area of the molten pool is large and the depth is small, resulting in large volatilization loss of elements with high vapor pressure (such as A1 element), which is unfavorable for controlling the alloy composition.

The induction melting method of water-cooled copper crucible is to place the copper crucible set in sections and cooled by water under the induction electromagnetic field for melting, which can maximize the advantages of the induction melting method. Between the water-cooled copper crucible and the metal melt, there is a solid shell formed by the solidification of titanium melt, which is called solidified shell. At this time, the crucible lining is equivalent to being made of 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 combined number of cold crucibles and the input power of power supply, the strong magnetic field will promote the rapid melting of the furnace charge and produce a strong stirring effect, so that the temperature and composition of the metal melt will be uniform, and the same degree of superheat can be obtained. Because the composition of new titanium alloys and TiAl compound alloys is relatively complex and the allowable deviation of alloy element content is small, it is difficult to meet the requirements for alloy composition by using the common arc melting method of titanium alloys. Water-cooled crucible induction shell melting is particularly suitable for this work. The melted alloy composition is uniform, and the superheat of the alloy liquid with the content of interstitial elements is appropriate, which meets the requirements of static and centrifugal casting.