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    • 2. 发明申请
    • PEENING PROCESS FOR ENHANCING SURFACE FINISH OF A COMPONENT
    • 用于增强部件表面处理的珩磨工艺
    • US20110192205A1
    • 2011-08-11
    • US12702534
    • 2010-02-09
    • Swami Ganesh
    • Swami Ganesh
    • C21D7/06
    • B24C1/10B24C7/0007C21D7/06Y10T29/479
    • A process for treating a surface of a component to improve its surface finish and induce residual compresses stresses in a near-surface region of the component. The process entails performing a first peening operation to form residual compressive stress layers in the near-surface region of the component, and then performing at least a second peening operation to cause surface smoothing of the surface of the component while retaining residual compressive stresses in the near-surface region of the component. The first peening operation comprises wet glass bead peening at a first intensity with a first glass bead media, and the second peening operation comprises wet glass bead peening at a second intensity with a second glass bead media, wherein the second intensity is lower than the first intensity and the second glass bead media is smaller than the first glass bead media.
    • 用于处理部件的表面以改善其表面光洁度并在部件的近表面区域中引起残余压缩应力的方法。 该过程需要执行第一喷丸操作以在部件的近表面区域中形成残余的压应力层,然后进行至少一次第二喷丸操作以引起部件表面的表面平滑化,同时保留部件中的残余压应力 组件的近表面区域。 第一个喷丸操作包括以第一强度的湿玻璃珠喷丸处理与第一玻璃珠粒介质,并且第二喷丸操作包括用第二玻璃珠介质以第二强度的湿玻璃珠喷丸处理,其中第二强度低于第一强度 强度和第二玻璃珠介质小于第一玻璃珠介质。
    • 6. 发明授权
    • Thermomechanical processing method for achieving coarse grains in a
superalloy article
    • 在超级合金制品中实现粗晶的热机械加工方法
    • US5571345A
    • 1996-11-05
    • US268696
    • 1994-06-30
    • Swami GaneshEric S. Huron
    • Swami GaneshEric S. Huron
    • B22F3/24C22F1/10
    • B22F3/24C22F1/10Y10S148/902
    • A method is provided for obtaining a uniform grain size on the order of about ASTM 5 or coarser in at least a portion of an article formed from a .gamma.' precipitation strengthened nickel-base superalloy. The method comprises forming an article by: providing a billet, preheating the billet above 2000.degree. F. for at least 0.5 hours, working at least a portion to near-net shape at working conditions including a first strain rate of less than about 0.01 per second and at a subsolvus temperature at or near the recrystallization temperature, supersolvus heating to form a grain size in the portion of at least 5 ASTM, and cooling to reprecipitate .gamma.' within the article. The method can be utilized to form a .gamma.' precipitation strengthened nickel-base superalloy article whose grain size varies uniformly between portions thereof, so as to yield a desirable microstructure and property gradient in the article in accordance with the in-service temperature and stress-state gradient experienced by the article. The method is particularly useful for the making of relatively large components such as turbine disks used in gas turbine engines, which are subjected to stress and temperature conditions that vary radially from the center of the disk to its outer rim.
    • 提供了一种方法,用于在由γ'沉淀强化的镍基超级合金形成的制品的至少一部分中获得大约为ASTM 5或更粗的大小的均匀晶粒尺寸。 该方法包括通过以下步骤来形成物品:提供坯料,将坯料预热到2000°F以上至少0.5小时,在包括第一应变速率小于约0.01的工作条件下工作至少一部分至接近净形状 第二和在重结晶温度或接近重结晶温度的亚沉积温度下,加热至少5 ASTM部分中的晶粒尺寸,并冷却以在制品内再沉淀γ'。 该方法可用于形成晶粒尺寸在其各部分之间均匀变化的γ'沉淀强化镍基超合金制品,从而根据使用中的温度和应力 - 压力产生所需的微结构和性能梯度, 文章经历的状态渐变。 该方法特别适用于制造相对较大的部件,例如在燃气涡轮发动机中使用的涡轮盘,其经受从盘的中心到其外缘径向变化的应力和温度条件。