Tungsten-tin composite material for green ammunition
    1.
    发明授权
    Tungsten-tin composite material for green ammunition 失效
    绿色弹药钨锡复合材料

    公开(公告)号:US06981996B2

    公开(公告)日:2006-01-03

    申请号:US10389321

    申请日:2003-03-14

    IPC分类号: B22F3/00

    摘要: A tungsten-tin composite for green (lead-free) ammunition is provided wherein the composite is made with a spheroidized tungsten powder and has mechanical properties similar to those of lead. The composite may be fully densified at pressures less than about 250 MPa and is suitable for pressing complex projectile shapes to near net size.

    摘要翻译: 提供了一种用于绿色(无铅)弹药的钨 - 锡复合材料,其中复合材料由球状钨粉制成,并具有与铅相似的机械性能。 复合材料可以在低于约250MPa的压力下完全致密化,并且适合于将复杂的抛射体形状压制成接近净尺寸。

    Powder compacting press to control green density distribution in parts
    3.
    发明授权
    Powder compacting press to control green density distribution in parts 失效
    粉末压制机控制部件中的绿色密度分布

    公开(公告)号:US4946634A

    公开(公告)日:1990-08-07

    申请号:US252719

    申请日:1988-10-03

    申请人: Kenneth H. Shaner

    发明人: Kenneth H. Shaner

    IPC分类号: B22F3/02 B30B11/00 B30B11/02

    CPC分类号: B22F3/02 B30B11/005 B30B11/02

    摘要: A powder compacting press wherein one or more upper and one or more lower punches are respectively advanced toward each other in a die filled with an amount of powder to producing a pressed part in the shape of the die and punch configuration. The press including measuring device on the upper and lower punches to measure the peak forces applied to the upper and the lower punches and to generate a first signal proportional to the forces, calculating device for receiving the first signal and calculating the ratio of the forces of the upper and lower punches and transmitting a second signal that is proportional to the ratio, and adjusting device for receiving the second signal and adjusting the forces applied to each punch based upon the second signal to achieve a predetermined green density distribution in the pressed part whereby substantial uniformity in part dimensions is achieved.

    摘要翻译: 一种粉末压制机,其中一个或多个上冲头和一个或多个下冲头在装有一定量粉末的模具中分别朝向彼此前进,以产生模具和冲头构造形状的压制部件。 压力机包括上冲头和下冲头上的测量装置,以测量施加到上冲头和下冲头的峰值力,并产生与力成比例的第一信号,计算装置以接收第一信号并计算力 上下冲头和传递与比率成比例的第二信号,以及用于接收第二信号的调节装置,并且基于第二信号调整施加到每个冲头的力,以在按压部分中实现预定的绿色密度分布,从而 实现了部分尺寸的实质均匀性。