A Modified GMAW System for Distortion Reduction and Travel Speed Increase through Separate Heat Input and Deposition Rate Control

Award Information
Agency:
Department of Defense
Branch
Navy
Amount:
$449,966.00
Award Year:
2009
Program:
SBIR
Phase:
Phase II
Contract:
N00024-09-C-4140
Award Id:
87403
Agency Tracking Number:
N073-211-0045
Solicitation Year:
n/a
Solicitation Topic Code:
n/a
Solicitation Number:
n/a
Small Business Information
A020B ASTeCC Building, University of Kentucky, Lexington, KY, 40506
Hubzone Owned:
N
Minority Owned:
N
Woman Owned:
N
Duns:
615662207
Principal Investigator:
YuMing Zhang
President
(859) 537-9871
ymzhang@aiswelding.com
Business Contact:
YuMing Zhang
President
(859) 537-9871
ymzhang@aiswelding.com
Research Institute:
n/a
Abstract
In traditional GMAW and modifications, the current melting the wire is the same as the current heating the base metal. To maintain a minimally acceptable productivity, the base metal heat input is typically much greater than the required to control the distortion at an acceptable or desirable level. In the modified GMAW proposed, a bypass torch is added to an existing GMAW system to bypass part of the current so that the base metal current is smaller than the wire melting current. By controlling the bypass current, the base metal current can be controlled at its desired level while the melting current can also be controlled at its own desirable level. As a result, reducing heat input thus distortion and increasing travel speed can be achieved simultaneously. While the Phase I project has proven the feasibility, this Phase II project will develop a commercial prototype system to implement the technology; establish optimal weld procedures to minimize post-weld distortion, as measured at selected representative locations, and total welding time for selected shipyard applications; adaptively control the process to assure the production of quality welds with minimized distortion and welding time; demonstrate the technology at shipyard; and generate technical data for qualifications.

* information listed above is at the time of submission.

Agency Micro-sites


SBA logo

Department of Agriculture logo

Department of Commerce logo

Department of Defense logo

Department of Education logo

Department of Energy logo

Department of Health and Human Services logo

Department of Homeland Security logo

Department of Transportation logo

Enviromental Protection Agency logo

National Aeronautics and Space Administration logo

National Science Foundation logo
US Flag An Official Website of the United States Government