PMD™- 300 SYSTEM
The first fully automatic, computer controlled DDM (Direct Digital Manufacturing) machine that includes scanning/reverse engineering, metal deposition, and post-deposition machining operations in one process and system.
PMD™ - FLAT WIRE METAL DEPOSITION PROCESS
This patented process uses an energy source such as a laser, to fuse a solid metal flat wire to a substrate. This is accomplished without a need to create a molten pool of metal on the work-piece prior to deposition unlike other metal deposition processes. As a result, HRT’s metal deposition process produces metal parts with an order of magnitude less heat input into the substrate.
THE FUNDAMENTAL ADVANTAGES
- Metallurgical bond Solid-state welding and coating of highly dissimilar materials.
- Extremely small Heat Affected Zone (HAZ)
- Distortion free repair of thin walled structures.
- 100% filler material capture.
PMD™ FLAT-WIRE LASER DEPOSITION VS.
LASER POWDER DEPOSITION
Bond Strength Comparison of Various
Metal Deposition Methods.
Metallurgical bond welding can be produced with such welding methods as TIG, plasma, and laser powder deposition. But these welding methods apply a melt pool at the parent metal for a time sufficient to result in melting and intermixing of elements of the alloys being joined. Such intermixing, especially with Aluminum alloys, has been observed to result in the creation of weak intermetallic compounds at the joint interface leading to cracking and flaking.
The melt pool-free PMD™ patented process allows for an ultra-low energy input and extremely short fusion and solidification time not sufficient to result in intermixing of elements of the alloys being joined. As the result, PMD™ process is capable of successful, metallurgical bond strength coating of aluminum with high temperature alloys such as titanium or molybdenum. PMD™ cost-effective coating can also be done on curved 3-Dimensional surfaces.
US Patent #5578227; Patent #6144008 and other patents pending. All rights reserved. Printed in USA.
