What are the forging methods of titanium metal materials?

Forging is a forming method for making mechanical parts, workpieces, tools or blanks by applying external force to titanium metal blanks (excluding plates) to produce plastic deformation, change size, shape and improve performance. In addition, according to the slider movement mode and the slider vertical and horizontal movement (for the forging of slender parts, lubrication cooling and high-speed production of parts forging), the use of compensation devices can increase the movement in other directions. The above methods are different, the required forging force, process, material utilization, output, dimensional tolerances, and lubrication and cooling methods are different. These factors are also factors that affect the level of automation. According to the moving mode of the blank, forging can be divided into free forging, upsetting, extrusion, die forging, closed die forging, and closed upsetting. Closed die forging and closed upsetting due to the absence of flash, the material utilization rate is high. It is possible to complete the finishing of complex forgings with one process or several processes. Since there is no flash, the force area of the forging is reduced, and the required load is also reduced. However, it should be noted that the blank cannot be completely restricted. For this reason, the volume of the blank should be strictly controlled, the relative position of the forging die should be controlled and the forging should be measured, and efforts should be made to reduce the wear of the forging die. According to the movement mode of the forging die, forging can be divided into rotary forging, swing forging, roll forging, wedge cross rolling, ring rolling and oblique rolling. Rotary forging, swing swaging and ring forging can also be used for precision forging. In order to improve the utilization of materials, roll forging and cross rolling can be used as the front process of slender materials. Rotary forging, which is the same as free forging, is also partially formed. Its advantage is that it can be formed with a smaller forging force than the size of the forging. This kind of forging method, including free forging, the material expands from the vicinity of the die surface to the free surface during processing, so it is difficult to have precision. Therefore, the movement direction of the forging die and the rotary forging process are controlled by a computer, and low forging forces can be used to obtain products with complex shapes and high precision, such as forgings such as steam turbine blades with many varieties and large sizes. In order to obtain high accuracy should pay attention to prevent overload at the bottom dead center, control speed and mold position. Because these will have an impact on the forging tolerance, shape accuracy and forging die life. In addition, in order to maintain accuracy, attention should also be paid to adjusting the clearance and stiffness of the slider guide rail, adjusting the bottom dead center and using auxiliary transmission devices. Titanium forging materials are mainly pure titanium and titanium alloys of various components. The original state of the material is bar, ingot, metal powder and liquid metal. The ratio of the cross-sectional area of the metal before deformation to the cross-sectional area after deformation is called the forging ratio. The correct choice of forging ratio, reasonable heating temperature and holding time, reasonable initial forging temperature and final forging temperature, reasonable deformation and deformation speed have a great relationship to improve product quality and reduce costs. The general small and medium forgings are round or square bar as a blank. The grain structure and mechanical properties of the bar are uniform and good, the shape and size are accurate, and the surface quality is good, which is convenient for mass production. As long as the heating temperature and deformation conditions are reasonably controlled, forgings with excellent performance can be forged without large forging deformation.

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