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    • 3. 发明授权
    • Ceramic shell mold for investment casting and method of making the same
    • 陶瓷壳模具用于熔模铸造及其制作方法
    • US4966225A
    • 1990-10-30
    • US512502
    • 1990-04-20
    • Paul R. JohnsonEliot S. Lassow
    • Paul R. JohnsonEliot S. Lassow
    • B22C9/06
    • B22C9/061
    • A ceramic shell mold and method of making the same. The ceramic shell mold includes a facecoat layer comprised of a first ceramic material. A plurality of alternating layers are formed overlaying the facecoat layer. The alternating layers are comprised of a second ceramic material and a third ceramic material, the third ceramic material having thermophysical properties different than the second ceramic material. The second ceramic material and the third ceramic material are preferably a zircon-based material and an alumina-based material, respectively. The resultant ceramic shell mold has a greater high temperature creep resistance than a shell mold formed solely from the second ceramic material or solely from the third ceramic material.
    • 陶瓷壳模具及其制造方法。 陶瓷壳模具包括由第一陶瓷材料构成的面涂层。 多个交替层形成在覆盖面涂层上。 所述交替层由第二陶瓷材料和第三陶瓷材料构成,所述第三陶瓷材料具有与第二陶瓷材料不同的热物理性质。 第二陶瓷材料和第三陶瓷材料优选分别是锆石基材料和氧化铝基材料。 所得到的陶瓷壳模具比仅由第二陶瓷材料或仅由第三陶瓷材料形成的壳模具具有更高的耐高温蠕变性。
    • 5. 发明授权
    • Method of casting with improved detectability of subsurface inclusions
    • 具有改进的地下夹杂物的可检测性的铸造方法
    • US06237671B1
    • 2001-05-29
    • US09390173
    • 1999-09-07
    • Eliot S. LassowGeorge R. StrabelKelly A. Koziol
    • Eliot S. LassowGeorge R. StrabelKelly A. Koziol
    • B22D4600
    • B22C1/00B22C1/165B22D21/005B22D46/00
    • Method of making a casting by investment casting of a metal or alloy, especially titanium and its alloys, in a ceramic investment shell mold in a manner to provide enhanced x-ray detectability of any sub-surface ceramic inclusions that may be present below exterior surfaces of the casting. The method involves forming a ceramic mold facecoat and/or back-up layer including erbia or other x-ray or neutron-ray detectable ceramic component. The facecoat/back-up layer is/are formed using a ceramic slurry comprising erbia and other optional ceramic particulates, an inorganic binder, and an inorganic pH control agent. The slurry is applied to a pattern of component to be cast to form the mold. A metal or alloy is cast in the mold, and the solidified casting is removed from the mold. The casting is subjected to radiography to detect any sub-surface ceramic inclusions below the exterior surface thereof not detectable by visual inspection of the casting.
    • 通过在陶瓷投资壳模具中熔融铸造金属或合金,特别是钛及其合金来制造铸造的方法,以提供可能存在于外表面下方的任何次表面陶瓷夹杂物的增强的X射线可检测性 的铸造。 该方法包括形成包括铒或其他x射线或中子线可检测陶瓷组分的陶瓷模具面涂层和/或支撑层。 使用包含铒和其它任选的陶瓷颗粒的陶​​瓷浆料,无机粘合剂和无机pH控制剂来形成表面涂层/后备层。 将浆料施加到要铸造的部件的图案上以形成模具。 将金属或合金铸造在模具中,并将凝固的铸件从模具中取出。 对铸件进行射线照相以检测其外表面下方的任何次表面陶瓷夹杂物通过目视检查铸件不可检测。
    • 6. 发明授权
    • Method of casting with improved detectability of subsurface inclusions
    • 具有改进的地下夹杂物的可检测性的铸造方法
    • US5975188A
    • 1999-11-02
    • US960995
    • 1997-10-30
    • Eliot S. LassowGeorge R. StrabelKelly A. Koziol
    • Eliot S. LassowGeorge R. StrabelKelly A. Koziol
    • B22C1/00B22C1/16B22C9/04B22D21/00B22D29/00B22D46/00B22C1/02
    • B22C1/00B22C1/165B22D21/005B22D46/00
    • Method of making a casting by investment casting of a metal or alloy, especially titanium and its alloys, in a ceramic investment shell mold in a manner to provide enhanced x-ray detectability of any sub-surface ceramic inclusions that may be present below exterior surfaces of the casting. The method involves forming a ceramic mold facecoat and/or back-up layer including erbia or other x-ray or neutron-ray detectable ceramic component. The facecoat/back-up layer is/are formed using a ceramic slurry comprising erbia and other optional ceramic particulates, an inorganic binder, and an inorganic pH control agent. The slurry is applied to a pattern of component to be cast to form the mold. A metal or alloy is cast in the mold, and the solidified casting is removed from the mold. The casting is subjected to radiography to detect any sub-surface ceramic inclusions below the exterior surface thereof not detectable by visual inspection of the casting.
    • 通过在陶瓷投资壳模具中熔融铸造金属或合金,特别是钛及其合金来制造铸造的方法,以提供可能存在于外表面下方的任何次表面陶瓷夹杂物的增强的X射线可检测性 的铸造。 该方法包括形成包括铒或其他x射线或中子线可检测陶瓷组分的陶瓷模具面涂层和/或支撑层。 使用包含铒和其它任选的陶瓷颗粒的陶​​瓷浆料,无机粘合剂和无机pH控制剂来形成表面涂层/后备层。 将浆料施加到要铸造的部件的图案上以形成模具。 将金属或合金铸造在模具中,并将凝固的铸件从模具中取出。 对铸件进行射线照相以检测其外表面下方的任何次表面陶瓷夹杂物通过目视检查铸件不可检测。