"investigation on the Effects of Number of Rows in SMAW on Properties of Stainless Steel Clad with Carbon Steel Base Metal and Optimizing Properties of the Clad"

Please enable javascript in your browser.

Oryan, Sareh | 2009

362 Viewed

Type of Document: M.Sc. Thesis
Language: Farsi
Document No: 39351 (07)
University: Sharif University of Technology
Department: Materials Science and Engineering
Advisor(s): Kokabi, Amir Hossein; Dolati, Abolghasem
Abstract:
Dilution is a parameter with significant effects in SMAW process. As this factor is in a range of 25-35% in SMAW process, it can increase the portion of base metal in the weld metal. During cladding carbon steel by stainless steel, this parameter causes reaching different composition as the number of weld rows increases. The aim of this project firstly is to investigate the effects of this parameter and then achieving the same properties in different welding rows. Suggested electrodes are as follows; E316-L16 three-row, KST 309-L16 for two-row and KST 310-16 for one-row welds. Corrosion behavior of each clad have been studied and the results show that; although by changing the electrodes the properties can be optimized, three-row weld has the best properties among all welds. As carbon mostly comes from the base metal and has an important role in increasing Cr23C6, just by increasing the number of weld rows we can decrease its amount in weld metal. To conclude, by changing electrodes for different number of rows, similar chemical analyze can be achieved and corrosion behavior of each row can be optimized
Keywords:
Corrosion ; Stainless Steel ; Cladding ; Particle Dilution Efficiency ; Intergranular Corrosion

No TOC