MRO Products: Pre-Sintered Preforms
We offer a wide array of Pre-Sintered Preforms (PSP?) used to dimensionally restore and repair cracks on worn jet engines, components for aerospace and industrial applications, such as high pressure, gas turbine vanes.
Pre-sintered preforms are a customised blend of superalloy and braze powders in either a plate form or specific shape allows selective build-up of worn surfaces to be achieved quickly and efficiently offering savings in time and cost. Extrudable paste allows for application in difficult to reach areas and a brushable paint form is used for sealing deep or narrow cracks or micro-cracks.
With our PSP? technology, low porosity eliminates braze repair shrinkage. The porosity of custom performs is less than 2%, so little or no shrinkage occurs–this is a major advantage of MTC Wesgo? Metals' PSPs? over traditional brazing pastes and green tapes. These braze methods present several problems, primarily with uncontrollable shrinkage and multiple re-brazing cycles. Unlike pastes and green tapes, PSP? components require minimal post-braze grinding or machining to restore a part to its original dimensions. PSPs? are available in a flat plate, cut preforms, tapered and curved preforms and a 3-Dimensional bushing, which is used to restore worn holes or bores.
Typical superalloys used in pre-sintered preforms:
- Inco 939
- SA650 (GE only)
- Hastelloy X
- Haynes 188
- MarM 247
- René 142
Typical braze alloys used in pre-sintered preforms:
- AMS 4776
- AMS 4778
- Inco 718B
- MarM 509B
- Custom OEM alloys
Find out more on our braze alloys by clicking the links below: