How do free forgings achieve machining of complex shapes and precise dimensions?
To achieve the processing of the complex shape and precision size of the free forging, the following methods can be used: Design optimization: In the design stage of the free forging, the difficulty of subsequent processing can be reduced by optimizing the design. For example, set the geometry of the punch and die reasonably to make it better adapt to the complex shape requirements of the forging. At the same time, allowance can also be considered in the design for dressing in subsequent heat treatment or machining. Precision casting: When selecting raw materials and forging process, the method of precision casting can be used to reduce the amount of subsequent machining. Precision casting usually uses high-precision molds and special liquid metal injection techniques to get as close as possible to the final shape and size requirements. Heat treatment control: Through the proper heat treatment process, the shape and size of the forging can be changed to achieve more accurate processing. For example, by adjusting the heating temperature, holding time and cooling rate and other parameters, control the shrinkage and deformation of the forging, so that it can meet the precision size requirements. Machining: For free forgings that require further fine machining, traditional machining methods such as turning, milling and grinding can be used. In machining, it is necessary to use high-precision processing equipment and tools, and according to the shape and size requirements of the forging, to develop a reasonable processing path and tool selection. CNC machining: For free forgings with particularly complex shapes and high precision requirements, CNC machining technology can be used for processing. CNC machining has the characteristics of high precision, high efficiency and strong flexibility, and can be automatically processed according to three-dimensional models to achieve complex shapes and precision dimensions. The above method can be combined according to the specific situation to achieve the complex shape and precision size of the free forging processing requirements.
