There are many types of titanium square rods shaped titanium materials. After years of development, many achievements have been made in the production process and rolling scheme of titanium rod materials.
When rolling the titanium square bar material, it can be found that it is very important to design a reasonable pass pattern for the titanium square bar in advance. Therefore, according to the characteristics of titanium and titanium alloys, it is necessary to carry out experimental calculations for different titanium rod materials, titanium square rods and flat square rods of different shapes and specifications, using different pass system designs and different elongation coefficient calculations. Rod reasonable hole design. However, two requirements need to be met in the design process. On the one hand, it is necessary to ensure that the aspect shape and section size of the titanium material are within the allowable deviation range; and to ensure that the mechanical properties of the titanium rod material meet the requirements, such as: the residual stress inside the titanium material is small, and the surface quality is good.
The ellipse-square-elliptical pass should be used as the extended pass system for the rough rolling of titanium square bars. During finishing rolling, the square-rhombic-square pass system is adopted for the titanium square bar. Relatively speaking, the deformation and surface temperature of the titanium material rolling piece are uniform, the residual stress in the rolling piece is small, and it is easy to remove the oxide scale on the surface of the titanium rod material, so as to obtain better titanium rolling surface quality.
In recent years, the new face hole type has been adopted, and now there are more than 20 kinds of titanium square rods and flat square rods. When producing titanium square bars and flat square bars on a medium 250X5 tandem rolling mill, the square-oval-square pass pattern is used in the preliminary rolling and elongation stages, which can reduce the number of rolling passes, make the section temperature of the rolled piece uniform, and reduce energy consumption. , and at the same time change the corners of the rolled piece, so that the rolled piece can be uniformly deformed. The square-rhombus-square pass system is used in the finishing rolling of titanium square bars.
