Industrial Consultancy & Sponsored Research (IC&SR) , IIT Madras
A Method for Joining Two or more Dissimilar Metallic Components and a System thereof
Categories for this Invention
Technology: Joining two or more dissimilar metallic components;
Industry & Applications: Laser Industry, Fiber optics, Optical Transmission Industries.
Market: The global Filler metal market is projected to grow at a CAGR of 12% during the forecast period of 2024-2031.
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Problem Statement
- The technical problem discussed herein stating that how to reduce formation of intermetallic compounds around a welded portion in laser welding process.
- Such an objective technical problem is addressed by a method for joining two or more dissimilar metallic components.
Technology
- Present invention describes a method for joining two or more dissimilar metallic components. (Refer Figs. 1,2 and 3)
- Said method comprises the steps of :
- This method splits the laser beam into the first beam & induced at the first spot is for pre-heating & the second beam induced at the second spot is for conduction welding, which lowers the interaction time of the laser beam with the overlapping portion of the metallic components & reduces formation of intermetallic compounds around the welded portion.
- The reduction of intermetallic compounds during welding improves the joint strength of the weld.
Key Features / Value Proposition
Technical Perspective:
Important Features:
- Facilitates the splitting of a high-power laser beam into at least two beams results in higher penetration depth compared to a single laser beam.
- Further, the metallic components joined by splitting the laser beam exhibits higher tensile shear strength of the joint.
Improved Performance:
- The focusing lens is positioned at about 50-100 mm from the first metallic component.
- (Refer fig.2)
- The distance between the first spot and the second spot is in the range of 0.5-1.5mm.
- The shielding gas may be supplied at a pressure of at least 0.5 bar and a flow rate of at least 25 l/min to avoid oxidation of molten weld pool during conduction welding.
Experimental Details:
The splitting of the laser beam by the beam splitter may improve the conduction of laser beam between steel & aluminum alloy.
Industrial Perspective:
- Universally applicable in the Optical fiber industries, Optical Transmission Industries.
Reference Details
Questions about this Technology?
Contact For Licensing
sm-marketing@imail.iitm.ac.in
ipoffice2@iitm.ac.in
Research Lab
Prof. SOUNDARAPANDIAN S
Prof. VIJAYARAGHAVAN L
Department of Mechanical Engineering.
Intellectual Property
IITM IDF Ref. 2001;
IN Patent No. 529025 (Granted)
Technology Readiness Level
TRL-3/4
Proof of Concept ready, tested & validated in Laboratory