The hollow billet structure result indicated when hollow outside diameter compared to internal K=1.65, the forming force is small.
空心坯料结构结果表明空心外内直径比K=1.65时,挤压成形力较小。
参考来源 - 镁合金负重轮温挤压成形工艺研究At last the forming method:“blank-billet, core shaft extrusion”is presented.
提出了“空心坯料、芯轴挤压”的省力成形新方法。
参考来源 - AZ80镁合金轿车轮毂成形工艺研究·2,447,543篇论文数据，部分数据来源于NoteExpress
采用主应力法与数值模拟相结合的方法，研究分析空心坯料反挤压成形力变化规律。
Forming force during backward extrusion of hollow billet was analyzed by slab method and numerical simulation.
管壳零件轴压液力成形以管材为初始坯料，可制造各种复杂的空心零件，具有广阔的应用前景。
Using a length of tube as the blank, hydroforming technology of tubular parts promise an extensive prospect to produce a variety of complex hollow components.
粉煤灰的颗粒组成、粒度分布是影响高掺量粉煤灰烧结空心制品坯料成型工艺的重要参数。
Fly ash grain composition, particle size distribution are the important process parameters that effect the molding of body stock of high content fly ash sintered porous product.
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