MagnaTech recently completed two Navy contracts. These contracts were to improve the wear and corrosion resistance of tail hook components. One of the contracts involved development of a carburization process to improve the wear resistance to scuffing and gouging of these components while maintaining corrosion resistance. The alloy carburized was Pyroware 675. The feature of the development was that higher carburizing temperatures were used that are not considered practical because grain growth may result. The MagnaTech process permits deposition of carbon on the surface at higher concentration, and owing to the higher deposition temperature, diffusion to a required depth of hardness occurs in less than half the time required of traditional processes. The process is also cleaner and more friendly to the environment.
MagnaTech shortly will file a second patent regarding a new alloy that they developed to satisfy the same requirements. The alloy developed is a powder metallurgy powder, water or gas atomized using conventional equipment. The atomized powder is then nitrogen alloyed to produce alloys containing as much as 0.8 % nitrogen. The nitrogen is alloyed within either a vacuum furnace, using a partial pressure of nitrogen, or in a fluid bed. After consolidation into a part of net shape, the nitrogen alloyed part may be further carburized or nitrided to harden the surface to a specified hardness for a specified depth of hardness. A further feature of the process is that instead of nitrogen alloying the powder, conventional martensitic stainless steels may be carburized or nitrided in similar fashion. In many cases, through hardening to specified hardness may be accomplished owing to the deposition concentration and the diffusion that occurs from carburizing or nitriding at the higher temperatures.
MagnaTech now wishes to proceed to exploit the developments described briefly above. For more detailed information regarding the practice of these innovations please contact moyer@snip.net.
No comments:
Post a Comment