Forged wind turbine shaft forgings
According to the movement mode of the billet, forging can be divided into free forging, upsetting, extrusion, die forging, closed die forging, and closed upsetting.
1. Free forging. There are two main methods for obtaining the desired forging: manual forging and mechanical forging, which use impact force or pressure to deform the metal between the upper and lower anvil blocks.
2. Die forging. Die forging can be divided into open die forging and closed die forging. Metal billets are deformed under pressure in a forging die chamber with a certain shape to obtain forgings, which can be further divided into cold heading, roll forging, radial forging, extrusion, and so on.
3. Due to the absence of burrs, the utilization rate of materials is high in closed die forging and closed forging. It is possible to complete the precision machining of complex forgings with one or several processes. Due to the absence of burrs, the stress area of the forging is reduced, and the required load is also reduced. However, it should be noted that the blank should not be completely restricted. To achieve this, the volume of the blank should be strictly controlled, the relative position of the forging die should be controlled, and measurements of the forging should be taken to minimize the wear of the forging die.
forging die
According to the movement mode of the forging die, forging can be divided into swing forging, swing rotary forging, roll forging, cross wedge rolling, ring rolling, and oblique rolling. Rotary forging, rotary forging, and ring rolling can also be processed by precision forging. In order to improve the utilization rate of materials, roll forging and cross rolling can be used as the preceding processes for processing slender materials. Like free forging, rotary forging is also locally formed, and its advantage is that it can be formed even with lower forging force compared to the size of the forging.
This forging method, including free forging, expands the material from the vicinity of the mold surface to the free surface during processing, making it difficult to ensure accuracy. Therefore, by controlling the movement direction of the forging die and the forging process with a computer, complex shaped and high-precision products can be obtained with lower forging force, such as producing a variety of large turbine blades and other forgings.
We also provide forging blanks and CNC precision machining services for our clients, covering industries such as energy, petrochemicals, steel, engineering machinery, plastics, prevention and control, hydraulics, healthcare, and food. Please feel free to send us drawings for inquiries.
