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Abstract：
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For semi-axle gear 20CrMnTiH, the gear forging process was optimized and improved, and the independent ejection rod device was added based on traditional mold. Then, the automobile semi-axle gear forging model was established by three-dimensional design software UG, and the forging process under new technology was simulated by simulation software DEFORM-3D. The simulation results show that after adding the ejection rod, the mold is closed at a preheating temperature of 720 ℃, a closing mold speed of 6 mmos-1, and then the ejection rod is pushed into the mold cavity at a speed of 6 mm·s-1. Therefore, the shape of part is filled completely without folding, cracks and other defects, and internal material of gear is even. Furthermore, actual production is conducted by the rational parameters obtained by the simulation to verify, and the forged gear products are similar to the simulation results. Thus, the quality of the gear is obviously improved, and service life of the die increases obviously from producing 2000-3000 pieces to more than 10000 pieces.
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Funds：
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四川省教育厅课题（17ZB0277）
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AuthorIntro：
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李林鑫(1984-)，男，学士，副教授
E-mail：179207987@qq.com
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Reference：
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