Control of mechanical properties for high strength steels through optimized welding processes
Journal Title: Biuletyn Instytutu Spawalnictwa - Year 2016, Vol 60, Issue 5
Abstract
The cooling time between 800°C and 500°C, is a crucial factor which determines the properties of welding joints of high strength steels significantly. For field welding, the cooling time t8/5 can be steered by the heat input even if a different wall thickness for the base materials is used. Modern arc processes with reduced heat input allow comparable deposition rates and increases the stability of the strength level due to optimized equipment settings. This paper compares the influence of conventional GMAW processes like short arc, spray arc, GMAW pulse with the new launched processes like PMC (Pulse Multi Control) and others regarding the properties of the weld. Special emphasis is laid on all weld metal and joint welds. From this research, conclusions and recommendations can be derived to optimize welding properties.
Authors and Affiliations
M. Fiedler, A. Plozner, B. Rutzinger, W. Scherleitner
Keywords
Related Articles
- EP ID EP256841
- DOI 10.17729/ebis.2016.5/4
- Views 100
- Downloads 0
Nd-YAG Laser Beam-Induced Liquation Cracking in Selected Nickel-Based Superalloys
MAR-M247 and Rene 77 belong to intermetallic phase Ni₃(Al, Ti) precipitation hardened nickel alloys widely used in the aerospace and power engineering industries. Because of their susceptibility to cracking, the above-na...
Effect of Pipe Butting Face Preparation on the Quality of Magnetically Impelled Arc Welded Joints
The article presents magnetically impelled arc welding – a technology used when making butt joints mainly of elements having circular cross-sections. In addition, the articles indicates issues related to the preparation...
HFMI Method-Based Increase in Fatigue Service Life of Welds in High-Strength Steels
Until recently, the fatigue service life of welded joints exposed to medium and high-cycle fatigue has been a factor restraining the wider use of high-strength steels. Recent research on increasing the fatigue service li...
Changes in the Geometrical Shape of a Liquid Metal Pool in Relation to a Heat Input during a Welding Process
The article aims to present a number of factors affecting the geometrical shape of a liquid metal pool when making welded joints, i.e. factors increasing or decreasing a heat input including the density and efficiency of...
Effect of Braze Welding Process Parameters on the Structure and Mechanical Properties of Joints Made of Steel CPW 800. Part 2: Laser Braze Welding
Presently, the reduction of the kerb weight of products is obtained by replacing previously used structural materials with new materials characterised by more favourable operating parameters. Significant mechanical prope...