Two-component injection molding
The brick + thimble combination is an example of the economical joining technology of two different tungsten materials on curved component surfaces using powder injection molding. Until now, such joinings have traditionally been realized by soldering. However, by means of two-component powder injection molding, the connection between brick and thimble can be realized without an additional joining step. The junction zone is dense and clearly visible between W-brick and W-2La2O3-finger cap as well as W-brick and W-2Y2O3-finger cap. One challenge of this process is the determination and alignment of the sinter shrinkage of the two materials.