| 我国压铸模具钢研究新进展 |
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| 引用本文： | 雷应华,周许,肖攸毅,张永强,张毅.我国压铸模具钢研究新进展[J].特殊钢,2022,43(5):1-6. |
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| 作者姓名： | 雷应华 周许 肖攸毅 张永强 张毅 |
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| 作者单位： | 1.大冶特殊钢有限公司;2.高品质特殊钢湖北省重点实验室,黄石 435001; |
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| 摘 要： | 介绍了我国压铸模具钢材料研究新进展。通过研究合金元素对压铸模具材料性能影响，开发出低Si、V及含Ni、Co、W等新型压铸模具钢；通过降低钢中S含量、采用Re改变夹杂形态和优化锻造工艺，材料等向性能达到90%以上；比较常规电渣重熔、气保电渣重熔和真空自耗三种工艺生产压铸材料，钢中N含量由150×10-6、90×10-6和40×10-6，O含量由24×10-6、15×10-6和6×10-6；利用ASPEX Explorer型金属质量分析仪对三种工艺夹杂物指数统计分析，采用真空自耗冶炼的非金属夹杂物数量呈指数减少，并且没有＞5 um的非金属夹杂物，材料冲击性能大幅提升，7mm × 10mm无缺口冲击功可达到450 J；制定高端压铸模具材料显微组织、无缺口冲击评价指标和规范；随着新能源汽车一体化压铸技术发展，未来压铸模具材料应用范围和需求量会越来越大，模具材料向着大型化、超纯净、高精度和长寿命方向发展。
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| 关 键 词： | 压铸模具钢 研究应用 进展 |
| 收稿时间： | 2022-06-16 |
New Development of Research on Die Steel forDie-Casting Steel in China |
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| Lei Yinghua,Zhou Xu,Xiao Youyi,Zhang Yongqiang,Zhang Yi.New Development of Research on Die Steel forDie-Casting Steel in China[J].Special Steel,2022,43(5):1-6. |
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| Authors: | Lei Yinghua Zhou Xu Xiao Youyi Zhang Yongqiang Zhang Yi |
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| Affiliation: | 1. Daye SpecialSteel Co.,Ltd;2. Hubei Province Key Laboratory of High Quality Special Steel,Huangshi 435001 |
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| Abstract: | The research and application achievements of die casting steel materials in China are introduced.By studying the influence of alloying elements on material properties of die material, a new die casting die steel with low Si, V and Ni, CO and W has been developed. By reducing the content of S in steel, using RE to change the shape of inclusion and optimizing forging process, the isotropic properties of the die-steel can reach more than 90%；To make a comparison between conventional electric slag, gas shielded electric slag and vacuum consumable process remelted three die-casting material, nitrogen in steel is respectively 150×10-6,90×10-6 and 40×10-6, oxygen content in steel is respectively 24×10-6, 15×10-6 and 6×10-6; By ASPEX Explorer metal quality analyzer inclusions index statistics and analysis of three kinds of technology, using vacuum consumable smelting exponential decline in non-metallic inclusions, non-metallic inclusions and no larger than 5 um, material impact performance boost, 7 mm × 10 mm gap impact energy can reach 450 J；To develop high-end die-casting mould material microstructure, the non-notched impact evaluation index standard and specification are established with the development of integrated die casting technology, the future mold material shall develop toward large-scale, super pure, high precision and long life direction. |
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| Keywords: | Die-Casting Mould Steel Development and Application Progress |
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