公开(公告)号：US5355934A

公开(公告)日：1994-10-18

申请号：US93585

申请日：1993-07-19

申请人： Minoru Uozumi ,  Mituyoshi Sato ,  Kunio Shimizu ,  Masao Nakayama

发明人： Minoru Uozumi ,  Mituyoshi Sato ,  Kunio Shimizu ,  Masao Nakayama

IPC分类号： B22D18/06

CPC分类号： B22D18/06

摘要： A suction casting apparatus is disclosed, which comprises a ventilating casting die, a chamber box and a surface peat for supporting the casting die and chamber box. The surface plate has a a through hole for passing a stalk therethrough, and its surface is formed with grooves which extend from the through hole to an area outside a die mounting area and inside a chamber box mounting area. External air entering through a sealed clearance between the surface plate and the stalk and combustion gas generated from the casting die are quickly led through the grooves into the chamber inner space to be quickly exhausted to the outside.

摘要翻译： 公开了一种吸入铸造设备，其包括通风铸模，室箱和用于支撑铸模和室箱的表面泥炭。 表面板具有用于使杆穿过的通孔，其表面形成有从通孔延伸到管芯安装区域外部的区域和室内安装区域内的槽。 通过表面板和杆之间的密封间隙进入的外部空气和从铸模产生的燃烧气体迅速地通过槽进入室内空间，以迅速地排出到外部。

公开(公告)号：US5555925A

公开(公告)日：1996-09-17

申请号：US307424

申请日：1994-09-19

申请人： Mituyoshi Sato ,  Minoru Uozumi ,  Masao Nakayama

发明人： Mituyoshi Sato ,  Minoru Uozumi ,  Masao Nakayama

IPC分类号： B22D18/06

CPC分类号： B22D18/06

摘要： A vacuum casting apparatus secures gas tightness of the die cavity without welding together a straight-tubular stalk and a flange or flanges, thus permitting an excellent quality casting. Two flanges are mounted in a mutually spaced-apart relation on an outer periphery of a stalk, and secured between a gas-tight chamber and a die. The gas-tight chamber is fitted on the die from above to form a gas-tight space between the two flanges. The space is evacuated to a pressure close to an inner pressure formed in a cavity of the die during vacuum casting. Thus, air that intrudes into the cavity of the die through small gaps between the flanges and the stalk is reduced, thereby preventing casting defects which might otherwise result. An end of the stalk inserted into the die is also spread to bring an outer periphery of the stalk into close contact with an inner periphery of a flange mounted on the stalk. A first degree of vacuum is applied to the gas-tight chamber to draw molten metal through the stalk to a level above the insertion end of the stalk, and below an inlet of the die cavity, so that the molten metal cools and forms a gas-tight seal about the insertion end of the stalk, before a second degree of vacuum is applied to withdraw molten metal into the die cavity.

摘要翻译： 真空铸造装置确保模腔的气密性，而不会将直管状的杆和法兰或凸缘焊接在一起，从而允许优质的铸造。 两个凸缘以相互间隔开的关系安装在柄的外周上，并固定在气密室和模具之间。 气密室从上方安装在模具上，以在两个法兰之间形成气密的空间。 在真空铸造期间将空间抽真空至接近于在模具的空腔中形成的内部压力的压力。 因此，减小了通过法兰和柄之间的小间隙侵入模具的腔体中的空气，从而防止可能导致的铸造缺陷。 插入模具中的茎的端部也被扩展以使茎的外周与安装在茎上的凸缘的内周紧密接触。 将第一级的真空度施加到气密室，以将熔融金属通过杆拉出到杆的插入端上方并且在模腔的入口下方，使得熔融金属冷却并形成气体 在施加第二级真空以将熔融金属引入模腔之前围绕茎的插入端密封。

公开(公告)号：US5620041A

公开(公告)日：1997-04-15

申请号：US627329

申请日：1996-04-04

申请人： Mituyoshi Sato ,  Minoru Uozumi ,  Masao Nakayama

发明人： Mituyoshi Sato ,  Minoru Uozumi ,  Masao Nakayama

IPC分类号： B22D18/06

CPC分类号： B22D18/06

摘要： A vacuum casting apparatus secures gas tightness of the die cavity without welding together a straight-tubular stalk and a flange or flanges, thus permitting an excellent quality casting. A flange is mounted on an outer periphery of a stalk, and secured between a gas-tight chamber and a die, forming a recess bounded by the die, a surface of the flange, and an outer surface of the stalk. The space inside the chamber is evacuated to a first degree of vacuum so that molten metal is withdrawn into the stalk and overflows the end of the stalk, and flows into the recess. Molten metal in the recess cools and solidifies to form a gas-tight seal between the stalk and the flange. Then, the space inside the chamber is evacuated to a second degree of vacuum and molten metal is withdrawn through the stalk and into the cavity of the die.

摘要翻译： 真空铸造装置确保模腔的气密性，而不会将直管状的杆和法兰或凸缘焊接在一起，从而允许优质的铸造。 凸缘安装在杆的外周上，并且固定在气密室和模具之间，形成由模具限定的凹部，凸缘的表面和柄的外表面。 室内的空间被抽空到第一级真空度，使得熔融金属被抽出到柄中并使杆的端部溢出并流入凹槽中。 凹陷中的熔融金属冷却并固化，以在柄和凸缘之间形成气密密封。 然后，将腔室内的空间抽真空至第二度的真空度，并将熔融金属通过杆抽出并进入模具的空腔。