How to optimize forging parameters to reduce internal defects and improve blank quality during forging Camshaft Blank?
Publish Time: 2024-11-12
In the process of forging Camshaft Blank, optimizing forging parameters is crucial to reduce internal defects and improve blank quality.
Forging temperature is one of the key parameters. A suitable starting forging temperature can ensure that the metal material has good plasticity. For steel commonly used in camshafts, the starting forging temperature should be determined based on its phase diagram and material properties. Generally, it should be ensured to be within the austenite region so that the material is easy to deform. If the temperature is too high, it may lead to coarse grains and reduce the mechanical properties of the material; if the temperature is too low, the plasticity of the material is insufficient, which will increase the forging pressure and easily cause defects such as cracks. During the forging process, attention should also be paid to the uniformity of temperature, which can be achieved by improving the heating equipment and process, such as using induction heating, and reasonably setting the heating time and power to make the temperature of each part of the Camshaft Blank uniform and reduce the internal stress caused by the temperature gradient.
The control of forging pressure should not be ignored. Excessive pressure will cause uneven metal flow, which may cause stress concentration in local areas and cause internal cracks. The appropriate pressure range should be determined by combining theoretical calculation and process test according to the size, shape and material type of Camshaft Blank. At the same time, advanced pressure control equipment can be used to achieve precise control of forging pressure. For example, a hydraulic press is used for forging, equipped with a high-precision pressure sensor and control system.
The forging speed also affects the quality of the blank. Too fast forging speed may cause the metal to deform too quickly, and the internal gas will not have time to escape, thus forming pores. Reasonable forging speed should comprehensively consider the forgeability of the material and the bearing capacity of the die. In actual operation, the forging speed can be optimized through computer simulation and field tests.
Die design and lubrication are also important for optimizing forging parameters. The cavity size and surface quality of the die directly affect the shape accuracy and surface quality of the Camshaft Blank. Reasonable design of the die's geometric parameters such as fillet radius and draft angle can effectively improve the flow of metal. In addition, good lubrication can reduce friction during forging, make the metal flow more uniform, reduce heat and stress generated by friction, further reduce internal defects, and improve the quality of Camshaft Blank.
