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    • 48. 发明公开
    • SIZING DIE FOR DENSIFYING SURFACE OF SINTERED BODY, METHOD FOR MANUFACTURING SAME, AND MANUFACTURING PRODUCT THEREFROM
    • 用于使烧结体表面变硬的模具模具,用于制造该模具的方法以及制造该产品的方法
    • EP3278909A1
    • 2018-02-07
    • EP16772200.8
    • 2016-03-11
    • Diamet Corporation
    • NAKAI, TakashiKAWASE, Kinya
    • B22F3/24B21J5/06B21J13/02
    • The invention of the present application is a die for compressing and sizing a sintered body (1) at straight portions (11, 21). Upper taper portions (15, 25) are provided on a die upper portion (13) and a core rod upper portion (23), and the straight portions (11, 21) are provided at a die lower portion (14) and a core rod lower portion (24). The materials of the die upper portion (13) and the core rod upper portion (23) have Young's moduluses higher than those of the materials of the die lower portion (14) and the core rod lower portion (24). The die upper portion (13) and the core rod upper portion (23) are made of materials having Young's moduluses that are at least 50 GPa higher than that of the sintered body (1). Thus, the sintered body (1) can be densified with a smaller ironing margin (s). Further, since the sintered body (1) is ironed without being compressed, by the taper portions of the die upper portion (13) and core rod upper portion (23) that are made of materials having high Young's moduluses, the die can be prevented from breaking, and being abraded due to ironing.
    • 本申请的发明是一种用于在直线部分(11,21)压缩和定型烧结体(1)的模具。 在模具上部(13)和芯棒上部(23)上设置上锥部(15,25),在模具下部(14)设置直线部(11,21) 杆下部(24)。 模具上部(13)和芯棒上部(23)的材料具有比模具下部(14)和芯棒下部(24)的材料高的杨氏模量。 模具上部(13)和芯棒上部(23)由杨氏模量比烧结体(1)高至少50GPa的材料制成。 因此,烧结体(1)可以用较小的熨烫边缘进行致密化。 此外,由于烧结体(1)通过由具有高杨氏模量的材料制成的模具上部(13)和芯棒上部(23)的锥形部分而被压缩而不被压缩,因此可以防止模具 从打破,并由于熨烫被磨损。