| タイトル | Vaccum Gas Tungsten Arc Welding, phase 1 |
| 本文（外部サイト） | http://hdl.handle.net/2060/19950017644 |
| 著者（英） | Todd, D. T.; Liaw, Y. K.; Krotz, P. D.; Weeks, J. L. |
| 著者所属（英） | Rockwell International Corp. |
| 発行日 | 1995-03-01 |
| 言語 | eng |
| 内容記述 | This two year program will investigate Vacuum Gas Tungsten Arc Welding (VGTAW) as a method to modify or improve the weldability of normally difficult-to-weld materials. VGTAW appears to offer a significant improvement in weldability because of the clean environment and lower heat input needed. The overall objective of the program is to develop the VGTAW technology and implement it into a manufacturing environment that will result in lower cost, better quality and higher reliability aerospace components for the space shuttle and other NASA space systems. Phase 1 of this program was aimed at demonstrating the process's ability to weld normally difficult-to-weld materials. Phase 2 will focus on further evaluation, a hardware demonstration and a plan to implement VGTAW technology into a manufacturing environment. During Phase 1, the following tasks were performed: (1) Task 11000 Facility Modification - an existing vacuum chamber was modified and adapted to a GTAW power supply; (2) Task 12000 Materials Selection - four difficult-to-weld materials typically used in the construction of aerospace hardware were chosen for study; (3) Task 13000 VGTAW Experiments - welding experiments were conducted under vacuum using the hollow tungsten electrode and evaluation. As a result of this effort, two materials, NARloy Z and Incoloy 903, were downselected for further characterization in Phase 2; and (4) Task 13100 Aluminum-Lithium Weld Studies - this task was added to the original work statement to investigate the effects of vacuum welding and weld pool vibration on aluminum-lithium alloys. |
| NASA分類 | MECHANICAL ENGINEERING |
| レポートNO | 95N24064
NASA-CR-197979
NAS 1.26:197979
RI/RD95-146 |
| 権利 | No Copyright |
|
