Temperature change and stress distribution analysis of die surface in Al-alloy die casting process and experimental study on die heat check |
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Authors: | Hu Xinping Zhao Guoqun Wu Bingyao |
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Affiliation: | 1. School of Material Science and Engineering, Shandong University, Jinan 250061, China;School of Mechanical Engineering,Shandong Institute of Light Industry, Jinan 250353, China 2. School of Material Science and Engineering, Shandong University, Jinan 250061, China 3. School of Material Science and Engineering, Southeast University,Nanjing 210096, China |
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Abstract: | The temperature change of the die surface in practical aluminum alloy die casting process was analyzed,and a 2D model was formulated on the basis of a deep concave round cavity without sliding core to analyze the stress distributions along the die surface in detail. Equipment was designed to test the thermal state of the die steel in different thermal loading conditions. The results of stress analysis showed that, the value of thermal stress (maximum 1.5 GPa) caused in the die filling and die spraying stages was larger than the mechanical stress (maximum 85 MPa)caused in the die locking stage. The results of the thermal check experiment showed that there were three stages of die dissolving, and that the stress distribution shown by the samples' cracking routine was close to the die surface stress analysis. |
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Keywords: | die temperature die stress die filling die locking die spraying die casting |
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