Multiple density sandwich structures
    2.
    发明授权
    Multiple density sandwich structures 失效
    多密度三明治结构

    公开(公告)号:US5534354A

    公开(公告)日:1996-07-09

    申请号:US474336

    申请日:1995-06-07

    摘要: A method to superplastic form sandwich structures is provided. A series of worksheets are joined together at selected locations through the use of partial penetration welding. The worksheets are subsequently superplastic formed in order to form a sandwich structure. The method allows a different number of worksheets to be used at different points throughout the sandwich structure. This results in a sandwich structure with a different internal reinforcement at different locations in the sandwich structure. In the preferred embodiment, a wing is fabricated from a series of worksheets partial penetration welded together using a laser. The worksheets are superplastic formed to producing a wing with a different internal reinforcement at two or more locations in the wing. The wing includes a pair of double thickness skins that define a major portion of aerodynamically smooth outer surface of the airfoil. Each skin is formed from at least two sheets of superplastically formed material that are joined by diffusion bonding. The internal reinforcement extends between the surface's interior surfaces of the skins and are welded to the skins by wave welds. The webs of the internal reinforcement extend between the skins diagonally and each web is formed of a single sheet of superplastically formed material.

    摘要翻译: 提供了一种超塑性夹层结构的方法。 一系列工作表通过部分穿透焊接在选定的位置连接在一起。 工件表随后被形成为超塑性以形成夹层结构。 该方法允许在整个夹层结构中的不同点使用不同数量的工作表。 这导致在夹层结构中在不同位置处具有不同内部加强件的夹层结构。 在优选实施例中,翼由使用激光部分穿透焊接在一起的一系列工作表制成。 工作表是超塑性的,用于在翼中的两个或更多个位置处产生具有不同内部加强件的翼。 机翼包括一对双层厚皮,其限定了翼型的空气动力学平滑的外表面的主要部分。 每个皮肤由通过扩散粘合连接的至少两片超塑性材料形成。 内部加强件在表面的表面的内表面之间延伸并且通过波纹焊接到表皮上。 内部加强筋的腹板在对角线之间延伸,每个腹板由单层超塑性材料形成。

    Multisheet sandwich panel using superplastic forming and adhesive bonding
    4.
    发明授权
    Multisheet sandwich panel using superplastic forming and adhesive bonding 有权
    多层板夹芯板采用超塑性成型和粘合粘合

    公开(公告)号:US07146727B2

    公开(公告)日:2006-12-12

    申请号:US10978879

    申请日:2004-11-01

    IPC分类号: B21D39/06 B22D3/00

    摘要: We combine superplastic forming (SPF) with adhesive bonding (AB) to produce quality multisheet sandwich panel structures, especially those using a superplastic aluminum alloy, such as A1 2004, A1 8090, or A1 1570. We produce the parts with improved energy efficiency and at lower cost. We heat the multisheet pack having an adhesive, preferably a polyimide, between the core sheets and the face sheets to its superplastic forming range. Then, we superplastically form the pack to define adhesive bonds between the sheets in the core and between the core and the face sheets with the flowing adhesive. Finally, we cool the formed pack below the superplastic range to set the adhesive.

    摘要翻译: 我们将超塑性成型(SPF)与粘合剂(AB)结合在一起,生产高质量的多层板夹芯板结构,特别是使用超级铝合金,如A1 2004,A1 8090或A1 1570。我们生产的零件具有提高的能源效率和 以较低的成本。 我们将具有粘合剂,优选聚酰亚胺的多片材包装在芯片和面板之间加热至其超塑性成形范围。 然后,我们通过流动的粘合剂超塑性地形成包装以确定芯部之间的片之间和芯部和面片之间的粘合。 最后,我们将形成的包装冷却到超塑性范围以下以设置粘合剂。

    Multisheet metal sandwich structures
    5.
    发明授权
    Multisheet metal sandwich structures 失效
    多片金属夹层结构

    公开(公告)号:US5994666A

    公开(公告)日:1999-11-30

    申请号:US101688

    申请日:1998-07-10

    摘要: A method of making an expanded metal sandwich structure includes cleaning at least two metal superplastic core sheets to remove metal oxides and residues that would interfere with diffusion bonding of the sheets. The core sheets are placed face-to-face and a gas pressure line fitting is inserted between one edge and is welded into place. The fitting has a through bore through which gas can flow under pressure into the space between the core sheets. The core sheets are pressed together and laser welded together into a core pack along lines which will form junction lines between the core sheets when the core pack is superplastically expanded. The core pack and the two metal face sheets having superplastic characteristics are each chemically cleaned, and the face sheets are placed over and under the core pack. An envelope gas fitting is placed between the face sheets and is welded in place while seal welding around the entire peripheral edges of the face sheet and the core pack to produce a sealed envelope pack with gas fittings into the core pack and into a face sheet zone between the face sheets and the core pack. A gas supply tube is connected to each of the fittings and air and moisture is purged from the packs by flushing with dry argon. The packs are pressurized to a low pressure with argon to maintain separation of the sheets while heating to prevent premature bonding. The full pack is placed in an internal cavity of a heated die and is raised to superforming temperatures. Forming gas is injected to inflate the envelope pack to the interior walls of the cavity and to inflate the core pack to the envelope pack and to diffusion bond the face sheets to the core sheets.

    摘要翻译: PCT No.PCT / US96 / 20106 Sec。 371日期:1998年7月10日 102(e)1998年7月10日PCT PCT 1996年12月20日PCT公布。 WO97 / 27970 PCT公开号 日期:1997年8月7日制造扩展金属夹层结构的方法包括清洗至少两种金属超塑性芯片以去除会妨碍片材扩散粘结的金属氧化物和残留物。 将芯片面对面放置,并且将气体压力线接头插入到一个边缘之间并被焊接到位。 配件具有通孔,气体可以通过该通孔在压力下流动到芯片之间的空间中。 芯片被压在一起并且激光焊接在一起成为一个核心包装线,当芯组件被超塑膨胀时,这些线将在芯板之间形成连接线。 将核心组合物和具有超塑性特征的两个金属面板各自进行化学清洗,并将面层放置在核心组件的上方和下方。 将封套气体配件放置在面板之间并被焊接就位,同时围绕面板和芯组件的整个周边边缘进行密封焊接,以产生具有气体配件的密封的信封包装到芯组件中并进入面板区域 在面板和核心包之间。 气体供应管连接到每个配件,空气通过用干燥的氩气冲洗而从包装中清除湿气。 用氩气将包装件加压至低压,以在加热时保持片材的分离,以防止过早粘合。 将整个组件放置在加热模具的内部空腔中并升高至超导温度。 注入形成气体以将信封包充气到空腔的内壁,并使核心包装膨胀到信封包,并将面片扩散粘合到芯片。

    Multisheet sandwich structures with throughholes

    公开(公告)号:US06656603B2

    公开(公告)日:2003-12-02

    申请号:US10165575

    申请日:2002-06-06

    IPC分类号: B32B314

    摘要: A method of making an expanded metal sandwich structure includes cleaning at least two metal superplastic core sheets to remove metal oxides and residues that would interfere with diffusion bonding of the sheets. The core sheets are placed face-to-face and a gas pressure line fitting is inserted between one edge and is welded into place. The fitting has a through bore through which gas can flow under pressure from a gas pressure control system into the space between the core sheets. The core sheets are pressed together and laser welded together into a core pack along lines which will form junction lines between the core sheets when the core pack is superplastically expanded. The core pack is chemically cleaned to remove metal oxides and residues that would interfere with diffusion bonding of the core pack sheets to face sheets. Two metal face sheets having superplastic characteristics are chemically cleaned and placed over and under the core pack. An envelope gas fitting is placed between the face sheets and is welded in place while seal welding around the entire peripheral edges of the face sheet and the core pack to produce a sealed envelope pack enveloping the core pack, with gas fittings into the core pack and into a face sheet zone between the face sheets and the core pack. A gas supply tube from the gas supply control system is connected to each of the fittings and air and moisture is purged from the packs by flushing with dry argon. The packs are pressurized to a low pressure with argon to maintain separation of the sheets while heating to prevent premature diffusion bonding. The full pack is placed in an internal cavity of a heated die and is raised to superforming temperatures. Forming gas is injected through the fittings at a forming pressure sufficient to inflate the envelope pack to the interior walls of the cavity, and inflate the core pack to the envelope pack and to diffusion bond the face sheets to the core sheets. The die is opened and the formed pack is removed from the die while still at an elevated temperature.

    Metal sandwich structure with integral hardpoint
    7.
    发明授权
    Metal sandwich structure with integral hardpoint 有权
    金属夹层结构具有整体硬度

    公开(公告)号:US06419146B1

    公开(公告)日:2002-07-16

    申请号:US09610665

    申请日:2000-07-05

    IPC分类号: B23K2000

    摘要: A superplastically formed, diffusion bonded sandwich structure having integral metal hardpoints, made by joining two superplastic metal core sheets together into a core pack by welding or diffusion bonding along a pattern of lines which form junction lines between the core sheets when the pack is inflated by gas pressure at superplastic temperatures. Face sheets are laid under and over the core pack and metal inserts are interposed between the face sheets and the core. All of the sheets in the pack are sealed together around an outside peripheral edge to create a gas tight envelope. The pack is heated to superplastic temperatures in a cavity in a die, and the top and bottom face sheets are diffusion bonded to top and bottom surfaces of the metal insert by application of heat and pressure from top and bottom inner surfaces of the die cavity. While at superplastic temperatures, the pack is inflated by gas pressure against inside surfaces of a die to form an expanded metal sandwich structure having integral webs and integral hardpoints formed by the metal insert. After forming, the gas pressure is reduced to near atmospheric, the die is opened and the part is removed from the die.

    摘要翻译: 一种具有整体金属硬点的超塑性扩散粘结夹层结构,其通过沿着线形图案通过焊接或扩散接合将两个超塑性金属芯片连接在一起,制成芯组件,该芯线在芯片片材之间形成连接线时, 超塑性气体压力。 将面片放置在芯组件的下面和后面,金属插入件插入在面片和芯之间。 包装中的所有片材围绕外围边缘密封在一起以形成气密封壳。 将包装件加热到模具中的空腔中的超塑性温度,并且通过从模腔的顶部和底部内表面施加热和压力将顶部和底部面板扩散结合到金属插入件的顶部和底部表面。 当在超塑性温度下,该组件通过气压对模具的内表面进行充气,以形成具有整体网状物和由该金属插入件形成的整体硬点的多孔金属夹层结构。 成型后,将气体压力降低至接近大气压,打开模具,将模具从模具中取出。

    Combined superplastic forming and adhesive bonding
    8.
    发明授权
    Combined superplastic forming and adhesive bonding 失效
    组合超塑性成型和粘接

    公开(公告)号:US06810572B2

    公开(公告)日:2004-11-02

    申请号:US09967269

    申请日:2001-09-28

    IPC分类号: B23P2500

    摘要: We combine superplastic forming (SPF) with adhesive bonding (AB) to produce quality multisheet sandwich panel structures, especially those using a superplastic aluminum alloy, such as Al 2004, Al 8090, or Al 1570. We produce the parts with improved energy efficiency and at lower cost. We heat the multisheet pack having an adhesive, preferably a polyimide, between the core sheets and the face sheets to its superplastic forming range. Then, we superplastically form the pack to define adhesive bonds between the sheets in the core and between the core and the face sheets with the flowing adhesive. Finally, we cool the formed pack below the superplastic range to set the adhesive.

    摘要翻译: 我们将超塑性成型(SPF)与粘合剂(AB)结合在一起,生产高质量的多层板夹芯板结构,特别是使用超级铝合金,如Al 2004,Al 8090或Al 1570。我们生产的部件具有更高的能源效率和 以较低的成本。 我们将具有粘合剂,优选聚酰亚胺的多片材包装在芯片和面板之间加热至其超塑性成形范围。 然后,我们通过流动的粘合剂超塑性地形成包装以确定芯部之间的片之间和芯部和面片之间的粘合。 最后,我们将形成的包装冷却到超塑性范围以下以设置粘合剂。

    Method for making multisheet metal sandwich structure with throughholes
    9.
    发明授权
    Method for making multisheet metal sandwich structure with throughholes 失效
    制造具有通孔的多片金属夹层结构的方法

    公开(公告)号:US06508394B1

    公开(公告)日:2003-01-21

    申请号:US09386737

    申请日:1999-08-31

    IPC分类号: B23K3102

    摘要: A method of making an expanded metal sandwich structure includes cleaning at least two metal superplastic core sheets to remove metal oxides and residues that would interfere with diffusion bonding of the sheets. The core sheets are placed face-to-face and a gas pressure line fitting is inserted between one edge and is welded into place. The fitting has a through bore through which gas can from under pressure from a gas pressure control system into the space between the core sheets. The core sheets are pressed together and laser welded together into a core pack along lines which will form junction lines between the core sheets when the core pack is superplastically expanded. The core pack is chemically cleaned to remove metal oxides and residues that would interfere with diffusion bonding of the core pack sheets to face sheets. Two metal face sheets having superplastic characteristics are chemically cleaned and placed over and under the core pack. An envelope gas fitting is placed between the face sheets and is welded in place while seal welding around the entire peripheral edges of the face sheet and the core pack to produce a sealed envelope pack enveloping the core pack, with gas fittings into the core pack and into a face sheet zone between the face sheets and the core pack.

    摘要翻译: 制造扩展金属夹层结构的方法包括清洗至少两个金属超塑性芯片以去除会妨碍片材扩散粘合的金属氧化物和残留物。 将芯片面对面放置,并且将气体压力线接头插入到一个边缘之间并被焊接到位。 配件具有通孔,气体可以在压力下从气体压力控制系统进入到芯片之间的空间。 芯片被压在一起并且激光焊接在一起成为一个核心包装线,当芯组件被超塑膨胀时,这些线将在芯板之间形成连接线。 核心包被化学清洁以除去会干扰核心包装片与面板的扩散粘合的金属氧化物和残留物。 具有超塑性特征的两个金属面板被化学清洗并放置在芯组件的上方和下方。 封套气体配件放置在面板之间并且被焊接就位,同时围绕面板和芯组件的整个周边边缘进行密封焊接,以产生包封芯组件的密封的信封包,气体配件到芯包中, 进入面片和芯包之间的面片区域。

    Combined superplastic forming and adhesive bonding
    10.
    发明授权
    Combined superplastic forming and adhesive bonding 有权
    组合超塑性成型和粘接

    公开(公告)号:US06337471B1

    公开(公告)日:2002-01-08

    申请号:US09556752

    申请日:2000-04-21

    IPC分类号: H05B610

    摘要: We combine superplastic forming (SPF) with adhesive bonding (AB) to produce quality multisheet sandwich panel structures, especially those using a superplastic aluminum alloy, such as Al 2004, Al 8090, or Al 1570. We produce the parts with improved energy efficiency and at lower cost. We heat the multisheet pack having an adhesive, preferably a polyimide, between the core sheets and the face sheets to its superplastic forming range. Then, we superplastically form the pack to define adhesive bonds between the sheets in the core and between the core and the face sheets with the flowing adhesive. Finally, we cool the formed pack below the superplastic range to set the adhesive.

    摘要翻译: 我们将超塑性成型(SPF)与粘合剂(AB)结合在一起,生产高质量的多层板夹芯板结构,特别是使用超级铝合金,如Al 2004,Al 8090或Al 1570。我们生产的部件具有更高的能源效率和 以较低的成本。 我们将具有粘合剂,优选聚酰亚胺的多片材包装在芯片和面板之间加热至其超塑性成形范围。 然后,我们通过流动的粘合剂超塑性地形成包装以确定芯部之间的片之间和芯部和面片之间的粘合。 最后,我们将形成的包装冷却到超塑性范围以下以设置粘合剂。