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公开(公告)号：US3982854A
公开(公告)日：1976-09-28
申请号：US370702
申请日：1973-06-18
摘要： A friction welded metallic article such as a fluid directing element for turbomachinery apparatus has a cast airfoil and a wrought base joined by friction welding. One such article having a hollow interior portion is made from a hollow or cored casting and a wrought base member. There is provided a metal airfoil casting having a hollow interior portion and an enlarged foot including an interface portion. Also provided is a wrought metal base portion including an interface portion. Interface surfaces of the interface portions are placed in spaced apart opposed relationship and then the airfoil casting and the wrought base member are friction welded at their interface portions.
摘要翻译： 用于涡轮机械设备的诸如流体引导元件的摩擦焊接金属制品具有铸造翼型件和通过摩擦焊接连接的锻造基座。 一种具有中空内部的这种制品由中空或芯铸件和锻造基座构件制成。 提供了具有中空内部的金属翼型铸件和包括界面部分的扩大脚。 还提供了包括界面部分的锻造金属基部。 接口部分的接口表面以间隔开的相对关系放置，然后翼型铸件和锻造基座部件在它们的界面部分摩擦焊接。
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公开(公告)号：US5167734A
公开(公告)日：1992-12-01
申请号：US804495
申请日：1991-12-09
CPC分类号： B22D31/002 , B21J5/00 , C21D10/00 , C22F1/10
摘要： A process for identificaiton, evaluation and removal of microshrinkage of investment cast superalloy parts and parts produced by the process. Parts free of deleterious microshrinkage capable of longer life at existing stress levels or use at higher alternating stresses are produced by first subjecting the parts to hot isostatic pressing to eliminate nonsurface connected subsurface microshrinkage. Next, in order to expose near-surface microshrinkage microscopically connected to the surface, the parts are immersed in an acid solution for a time sufficient to uniformly remove at least about 0.005 inches of the original as cast surface. The exposed microshrinkage is evaluated for acceptability or removal by standard nondestructive techniques, such as liquid penetration evaluation.
摘要翻译： 用于鉴定，评估和清除由该方法生产的投资超级合金部件和零件的微收缩的过程。 通过首先使部件经受热等静压，以消除非表面连接的地下微收缩，产生无有害微量收缩的能够在现有应力水平下使用更长寿命或在较高交变应力下使用的部件。 接下来，为了暴露显微镜连接到表面的近表面微收缩，将部件浸入酸溶液中足够长的时间以均匀地去除原始铸件的至少约0.005英寸作为铸造表面。 通过标准非破坏性技术（如液体渗透性评估）评估暴露的微收缩率是否可接受性或去除。
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