Weldability Evaluation of New Materials
The Institute houses a wide range of equipments to assess the fabrication and material weldability aspects to enable defect free welding. Determination of materials resistance to Hydrogen Induced Cracking, Liquation & Hot cracking, Lamellar Tearing etc. and optimization of welding parameters can be done. Facilities like indigenously developed Implant Test Equipment, Elastic Restraint Rig, Lamellar Test Rig, Thermal Cycle Simulator are available for ascertaining the susceptibility of the material to cracking.


Weldability evaluation of Ferritic Stainless Steel (FSS) type 409 M grade (8mm and 3.15mm) was carried out for coal bunker application. Base material tests like chemical analysis, tensile, bend and hardness were conducted. Weld cracking sensitivity and weld joint tests were also carried out. The plates were found to be of weldable quality and the mechanical test results of butt joints were found satisfactory.


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