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公开(公告)号：US4361612A
公开(公告)日：1982-11-30
申请号：US283162
申请日：1981-07-14
CPC分类号： B32B21/02 , B27N3/06 , E04C2/16 , Y10T428/24066 , Y10T428/24132 , Y10T428/253 , Y10T428/2982 , Y10T428/31957 , Y10T428/3196 , Y10T428/31982 , Y10T428/31989
摘要： A lamina for a medium density structural board made from dimensioned wood flakes cut from a mixture of hardwood species and having a high retained internal bond strength is disclosed. The wood flakes are blended with a phenol formaldehyde resin having a major quantity of a low molecular weight fraction and a wax and then formed into a hot pressed product. The lamina may be used alone or as the core of a structural board having veneer, hardboard or plywood face panels. Three or more lamina may be formed into a structural board or used as the core of a board having veneer, hardboard or plywood face panels.
摘要翻译： 公开了一种用于由硬木种类的混合物切割的尺寸尺寸的木片制成的具有高保留的内部粘合强度的中密度结构板的层。 将木片与主要量为低分子量馏分和蜡的酚醛树脂混合，然后形成热压成型品。 层可以单独使用或作为具有单板，硬质板或胶合板面板的结构板的核心使用。 可以将三层或更多层板形成为结构板或用作具有单板，硬质板或胶合板面板的板的芯。
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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
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。
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公开(公告)号：US4462724A
公开(公告)日：1984-07-31
申请号：US411212
申请日：1982-08-25
CPC分类号： B24D5/126 , Y10T407/19 , Y10T407/1936
摘要： A cutting wheel comprises a thin metal disk having an inner peripheral cutting edge. The cutting wheel is photochemically machined from a flat metal sheet and has locating holes therethrough the diameters of which are held to a very close tolerance.
摘要翻译： 切割轮包括具有内周切削刃的薄金属盘。 切割轮由平坦的金属板进行光化学加工，并具有穿过其中的定位孔，其直径保持非常紧密的公差。
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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
CPC分类号： C22C1/045 , B22F1/0003 , B22F2998/10 , F42B12/74 , B22F1/0048 , B22F3/02
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。
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