Precision Aluminum Machine CNC Turning Milling Parts

Material calculation and blanking are one of the important links to improve material utilization and realize blank refinement. Too much material not only causes waste, but also aggravates cavity wear and energy consumption. If the blanking does not leave a margin, it will increase the difficulty of process adjustment and increase the scrap rate. In addition, the quality of the blanking end face also affects the process and the quality of the forging.

The purpose of heating is to reduce forging deformation force and improve metal plasticity. But heating also brings a series of problems, such as oxidation, decarburization, overheating and overburning. Accurate control of the initial forging and final forging temperature has a great influence on the product structure and performance.

Flame furnace heating has the advantages of low cost and strong applicability. However, the heating time is long, oxidation and decarburization are prone to occur, and the working conditions need to be continuously improved. Electric induction heating has the advantages of rapid heating and less oxidation, but it has poor adaptability to product shape, size and material changes.

Forging forming is produced under the action of external force. Therefore, correct calculation of deformation force is the basis for selecting equipment and checking mold. Analysis of stress and strain inside the deformed body is also indispensable for optimizing the process and controlling the structure and performance of the forging.

There are four main methods for analyzing deformation force. Although the principal stress method is not very strict, it is relatively simple and intuitive. It can calculate the total pressure and the stress distribution on the contact surface of the workpiece and the tool. The slip line method is strict for the plane strain problem. It is relatively intuitive to solve the stress distribution for the local deformation of tall parts, but the scope of application is narrow. The upper limit method can give an overestimated load, and the upper limit element can also predict the shape change of the workpiece during deformation.

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