The material selected for this work was the spray formed Vanadis4 high alloy cold working mould steel （abbreviated to V4 steel）. Its microstructure, hot rolling process, and annealing treatment have been investigate...The material selected for this work was the spray formed Vanadis4 high alloy cold working mould steel （abbreviated to V4 steel）. Its microstructure, hot rolling process, and annealing treatment have been investigated. Observed from the optical and electron microscopes, the as-sprayed V4 steel had the finer microstructure of uniform and equiaxial grains ,while after hot rolling for densification and spheroidized annealing, the V4 steel obtained an excellent spheroidized structure that is favorable to subsequent quenching and tempering treatment. The spheroidized structure and level of annealed hardness of the V4 steel are almost the same as expensive imported powder metallurgy the V4 steel. It is difficult to produce V4 steel with the conventional ingot metallurgical technique, so the multi-step and high-cost powder metallurgy method is generally used at present. Compared to the powder metallurgy technique, using the spray forming technique to produce the V4 steel has obvious advantages and potential market competitiveness in reducing production costs, simplifying working process, and shortening the production cycle.展开更多
利用NX1851三维造型软件,对汽车尾门拉手进行基本设计,获得了分型面的最佳位置。利用CAD Doctor 2016模型修补软件,对汽车尾门拉手进行模型优化,通过Moldflow2021,获得了最佳浇口位置。设置了前模抽芯、斜导柱侧向抽芯、气动平衡抽芯,...利用NX1851三维造型软件,对汽车尾门拉手进行基本设计,获得了分型面的最佳位置。利用CAD Doctor 2016模型修补软件,对汽车尾门拉手进行模型优化,通过Moldflow2021,获得了最佳浇口位置。设置了前模抽芯、斜导柱侧向抽芯、气动平衡抽芯,在开模力的作用下,前模抽芯及左右两侧斜导柱抽芯,同时抽芯。设计了T型滑槽,能够将滑块的直线运动,转换成入子的斜向运动。经检测,制品在检具中缝隙均匀,没有翘曲等缺陷,验证了热流道结合冷流道的合理性,各抽芯机构满足抽芯要求,分型面选择合理。展开更多
文摘The material selected for this work was the spray formed Vanadis4 high alloy cold working mould steel （abbreviated to V4 steel）. Its microstructure, hot rolling process, and annealing treatment have been investigated. Observed from the optical and electron microscopes, the as-sprayed V4 steel had the finer microstructure of uniform and equiaxial grains ,while after hot rolling for densification and spheroidized annealing, the V4 steel obtained an excellent spheroidized structure that is favorable to subsequent quenching and tempering treatment. The spheroidized structure and level of annealed hardness of the V4 steel are almost the same as expensive imported powder metallurgy the V4 steel. It is difficult to produce V4 steel with the conventional ingot metallurgical technique, so the multi-step and high-cost powder metallurgy method is generally used at present. Compared to the powder metallurgy technique, using the spray forming technique to produce the V4 steel has obvious advantages and potential market competitiveness in reducing production costs, simplifying working process, and shortening the production cycle.
文摘利用NX1851三维造型软件,对汽车尾门拉手进行基本设计,获得了分型面的最佳位置。利用CAD Doctor 2016模型修补软件,对汽车尾门拉手进行模型优化,通过Moldflow2021,获得了最佳浇口位置。设置了前模抽芯、斜导柱侧向抽芯、气动平衡抽芯,在开模力的作用下,前模抽芯及左右两侧斜导柱抽芯,同时抽芯。设计了T型滑槽,能够将滑块的直线运动,转换成入子的斜向运动。经检测,制品在检具中缝隙均匀,没有翘曲等缺陷,验证了热流道结合冷流道的合理性,各抽芯机构满足抽芯要求,分型面选择合理。
