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A Modified GMAW System for Distortion Reduction and Travel Speed Increase…

Award Information

Agency:
Department of Defense
Branch:
Navy
Award ID:
87403
Program Year/Program:
2008 / SBIR
Agency Tracking Number:
N073-211-0045
Solicitation Year:
N/A
Solicitation Topic Code:
N/A
Solicitation Number:
N/A
Small Business Information
ADAPTIVE INTELLIGENT SYSTEMS
A020B ASTeCC Building University of Kentucky Lexington, KY 40506
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Woman-Owned: No
Minority-Owned: No
HUBZone-Owned: No
 
Phase 1
Fiscal Year: 2008
Title: A Modified GMAW System for Distortion Reduction and Travel Speed Increase through Separate Heat Input and Deposition Rate Control
Agency / Branch: DOD / NAVY
Contract: N65538-08-M-0049
Award Amount: $100,000.00
 

Abstract:

Gas Metal Arc Welding (GMAW) is the most widely used welding process. It is also the major process used in shipbuilding. In traditional GMAW and all its modifications, the current which melts the wire is the same as the current which heats the base metal. The base metal heat input is thus proportional to the heat which melts the wire. To maintain a minimally acceptable productivity as measured by the wire melting speed, the base metal heat input is typically much greater than the required to control the distortion at an acceptable level. In the modified GMAW proposed to reduce the post-weld distortion and increase the travel speed, 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. Further, by controlling the bypass current, the base metal current can be controlled at whatever the desired level is while the melting current can also be controlled at whatever the desired level is. Hence, in the modified GMAW, the productivity is decoupled from the base metal current and the base metal heat input can thus be reduced without affecting the productivity. As a result, reducing heat input thus distortion and increasing travel speed can be achieved simultaneously. The Phase I project will prove the feasibility of the modified GMAW technology for its practical use in welding a typical ship structure material DH36 at flat, horizontal and vertical (down or up) positions.

Principal Investigator:

YuMing Zhang
President
8595379871
ymzhang@engr.uky.edu

Business Contact:

YuMing Zhang
President
8595379871
ymzhang@engr.uky.edu
Small Business Information at Submission:

ADAPTIVE INTELLIGENT SYSTEMS
2636 Fireside Circle Lexington, KY 40513

EIN/Tax ID: 061766871
DUNS: N/A
Number of Employees:
Woman-Owned: No
Minority-Owned: No
HUBZone-Owned: No