Titanium tubes are similar to other metals in casting, and Titanium tubes shrinkage behavior will undergo a transformation process from liquid to solid state and then to solid state. Generally, we divide this shrinkage behavior into two types: volume shrinkage and linear shrinkage.
Volume shrinkage intuitively reflects the change in the entire volume of the titanium tube during the casting process. In the casting process of titanium alloys, the total volume shrinkage is equal to the sum of the volume of the concentrated shrinkage cavities and the volume of the shrinkage. It can be seen that the solidification shrinkage behavior of the alloy casting process is closely related to the volume shrinkage of the alloy, which directly determines the shrinkage and shrinkage defect characteristics of the titanium alloy. A deep understanding of the volume shrinkage behavior of titanium tubes is of great significance for clarifying the causes of shrinkage and shrinkage defects in titanium tubes.
The solidification shrinkage of titanium tubes is affected by many important factors, among which alloy elements, casting materials, and casting structures are key factors. Alloy elements will affect the crystallization temperature interval of titanium tubes, which is similar to the effect of alloy elements on the fluidity of titanium tubes. The solidification shrinkage characteristics of titanium tubes first depend on the characteristics of the added alloying elements. Specifically, they are closely related to the size of the crystallization temperature interval formed between titanium and alloying elements.
Titanium tubes with different crystallization temperature intervals have different solidification shrinkage performances. Eutectic titanium tubes with narrow crystallization temperature intervals have good fluidity and are more likely to form concentrated shrinkage holes during solidification. Titanium tubes with wide crystallization temperature intervals have relatively poor fluidity and are more likely to form dispersed shrinkage holes, that is, shrinkage, during solidification.
Titanium tubes shrinkage behavior has become an excellent structural material with a series of excellent physical properties. They compete fiercely with stainless steel and nickel alloys in many fields for application range. The application of titanium tubes has brought significant changes in many sectors of the national economy. After the use of titanium tubes, the service life of the product has been extended, the reliability and productivity of the equipment have been improved, the process has been accelerated, and the working conditions have been improved. These positive effects are ultimately transformed into significant economic benefits, further highlighting the important position and application value of titanium tubes in the industrial field.
