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Kjell Hurtig

Forskningsingenjör

Staff member at Division of Welding Technology.

Conducts research in engineering and technology, production technology.


Publications


A contribution to the study of negative polarity in GMA welding

Published

A contribution to the study of negative polarity in GMA welding

GMAW using the electrode with negative polarity (DCEN) has been frequently suggested as a potential means of increasing production capacity. The...

A critical analysis of weld heat input measurement through a water-cooled stationary anode calorimeter

Published

A critical analysis of weld heat input measurement through a water-cooled stationary anode calorimeter

A comprehensive model on heat transfer in welded plates is able to calculate the amount of heat losses from the surfaces. A model demands as input...

A critical analysis of weld heat input measurement through a water-cooled stationary anode calorimeter

Published

A critical analysis of weld heat input measurement through a water-cooled stationary anode calorimeter

Comprehensive models of heat transfer require specification of the total amount of heat received by the workpiece. The objective of this work was t...

A modified Johnson-Cook model for ferritic-pearlitic steel in dynamic strain aging regime

Published

A modified Johnson-Cook model for ferritic-pearlitic steel in dynamic strain aging regime

In this study, the flow stress behavior of ferritic-pearlitic steel (C45E steel) is investigated through isothermal compression testing at differen...

A New Approach to the Study of Multi-Pass Welds–Microstructure and Properties of Welded 20-mm-Thick Superduplex Stainless Steel

Published

A New Approach to the Study of Multi-Pass Welds–Microstructure and Properties of Welded 20-mm-Thick Superduplex Stainless Steel

Type 2507 superduplex stainless steel 20 mm in thickness was multi-pass-welded with Gas Metal Arc Welding (GMAW) and Flux-Cored Arc Welding (FCAW)...

A novel arc heat treatment technique for producing graded microstructures through controlled temperature gradients

Published

A novel arc heat treatment technique for producing graded microstructures through controlled temperature gradients

This paper introduces a novel arc heat treatment technique to produce samples with graded microstructures through the application of controlled...

Arc Efficiency for Gas Tungsten Arc Welding DCEN-GTAW

Published

Arc Efficiency for Gas Tungsten Arc Welding DCEN-GTAW

Automation of a robotised metal deposition system using laser melting of wire

Published

Automation of a robotised metal deposition system using laser melting of wire

This paper presents a system for full automation of free-form-fabrication of fully dense metal structures using robotized laser melting of wire. Th...

Automation of Robotized Laser Metal-Wire Deposition

Published

Automation of Robotized Laser Metal-Wire Deposition

Control Design for Automation of Robotized Laser Metal-Wire Deposition

Published

Control Design for Automation of Robotized Laser Metal-Wire Deposition

In this paper a novel approach towards automation of robotized laser metal-wire deposition (RLMwD) is described. The RLMwD technique is being...

Effect of HFMI treatment procedure on weld toe geometry and fatigue properties of high strength steel welds

Published

Effect of HFMI treatment procedure on weld toe geometry and fatigue properties of high strength steel welds

The effects of high frequency mechanical impact (HFMI) treatment procedure on the weld toe geometry and fatigue strength in 1300 MPa yield strength...

Effect of multipass TIG welding on the corrosion resistance and microstructure of a super duplex stainless steel

Published

Effect of multipass TIG welding on the corrosion resistance and microstructure of a super duplex stainless steel

This is a study of the effect of repetitive TIG (tungsten inert gas) welding passes, melting and remelting the same material volume on microstructu...

Effect of shielding gas on welding performance and properties of duplex and superduplex stainless steel welds

Published

Effect of shielding gas on welding performance and properties of duplex and superduplex stainless steel welds

The influence of shielding gases on welding performanceand on properties of duplex and superduplex stainlesssteel welds was studied. Using argon as...

Effect of welding position on properties of duplex and superduplex stainless steel circumferential welds

Published

Effect of welding position on properties of duplex and superduplex stainless steel circumferential welds

The influence of welding position on properties ofduplex and superduplex stainless steel welds was studied. Circumferential pipe welds were produce...

Efficient welding of high strength steel

Published

Efficient welding of high strength steel

 Producing welds with properties matching those of the steel is a challenge at high strength levels. The present study investigated how cooling rat...

Ferrite content measurement in super duplex stainless steel welds

Published

Ferrite content measurement in super duplex stainless steel welds

Approaches to determining ferrite fraction (%) and ferrite number (FN) were examined for super duplex stainless steel (SDSS) welds. A reference...

Freeform Fabrication using Laser Metal-wire Deposition

Published

Freeform Fabrication using Laser Metal-wire Deposition

Heat input and temperatures in welding

Published

Heat input and temperatures in welding

A key feature in welding is the energy supplied, in order to join the work pieces together. For all fusion welding methods, the supplied energy is ...

Influence of dilution on properties of high strength steel weld metals

Published

Influence of dilution on properties of high strength steel weld metals

Influence of Heat Treatments on Heat Affected Zone Cracking of Gas Tungsten Arc Welded Additive Manufactured Alloy 718

Published

Influence of Heat Treatments on Heat Affected Zone Cracking of Gas Tungsten Arc Welded Additive Manufactured Alloy 718

The weldability of additive manufactured Alloy 718 was investigated in various heat-treated conditions. The microstructure of the base metal was...

Influence of multiple thermal cycles on microstructure of heat-affected zone in TIG-welded super duplex stainless steel

Published

Influence of multiple thermal cycles on microstructure of heat-affected zone in TIG-welded super duplex stainless steel

The influence of heat input and multiple welding cycles on the microstructure of the heat-affected zone in autogenously TIG-welded 6 mm 2507 type...

Influenza del gas di protezione sul comportamento e le proprietà  di giunti sa dati di acciai duplex e superduplex : Effect of shielding gas on welding performance and properties of duplex and superduplex stainless steel welds

Published

Influenza del gas di protezione sul comportamento e le proprietà  di giunti sa dati di acciai duplex e superduplex : Effect of shielding gas on welding performance and properties of duplex and superduplex stainless steel welds

The influence of shielding gases on welding performance and on properties of duplex and superduplex stainless steel welds was studied. Using argon ...

Investigation on effect of welding parameters on solidification cracking of austenitic stainless steel 314

Published

Investigation on effect of welding parameters on solidification cracking of austenitic stainless steel 314

This study investigates the solidification cracking susceptibility of the austenitic stainless steel 314. Longitudinal Varestraint testing was used...

Measurement of the thermal cycle in the base metal heat affected zone of cast ATI ® 718Plus TM during manual multi-pass TIG welding

Published

Measurement of the thermal cycle in the base metal heat affected zone of cast ATI ® 718Plus TM during manual multi-pass TIG welding

This paper presents a method to acquire thermal data in the base metal heat affected zone (HAZ) during manual multi-pass TIG welding of ATI ® 718Pl...

Monitoring Thermal Cycles in Multi-pass Welding

Published

Monitoring Thermal Cycles in Multi-pass Welding

Differently from any previous investigation in welding, this research work presents a novel development that allows temperature to be measured and...

Multipass Autogenous TIG Welding of Super Duplex Stainless

Published

Multipass Autogenous TIG Welding of Super Duplex Stainless

Multipass welding of super duplex stainless steels (SDSS) needs further characterization due to their growing applications inpetrochemical and...

Nitrogen loss and effects on microstructure in multipass TIG welding of a super duplex stainless steel

Published

Nitrogen loss and effects on microstructure in multipass TIG welding of a super duplex stainless steel

Nitrogen loss is an important phenomenon in welding of super duplex stainless steels. In this study, a super duplex stainless steel was autogenousl...

Optimising Quality and Productivity in Welding of Duplex and Superduplex Stainless Steels

Published

Optimising Quality and Productivity in Welding of Duplex and Superduplex Stainless Steels

The aim of this work was to study the influence of shielding gases and welding positions on properties of duplex and superduplex stainless steel...

Review of Arc Efficiency Values for Gas Tungsten Arc Welding

Published

Review of Arc Efficiency Values for Gas Tungsten Arc Welding

The aim of this study was to review the literature that specifies arc efficiency values for gas tungsten arc welding (GTAW) and, if possible, propo...

Strength and Impact Toughness of High Strength Steel Weld Metals : Influence of Welding Method, Dilution and Cooling Rate

Published

Strength and Impact Toughness of High Strength Steel Weld Metals : Influence of Welding Method, Dilution and Cooling Rate

Producing welds with properties matching those of the steel is a challenge at high strength levels. The present study has investigated how the choi...

Towards a Map of Solidification Cracking Risk in Laser Welding of Austenitic Stainless Steels

Published

Towards a Map of Solidification Cracking Risk in Laser Welding of Austenitic Stainless Steels

In this work, two series of specimens with Hammar and Svensson's Cr- and Ni-equivalents (Creq+Nieq) = 35 and 45 wt% were used to cover a wide range...

Visual feed-back for operator interaction in robotized laser metal deposition

Published

Visual feed-back for operator interaction in robotized laser metal deposition

Wire-arc additive manufacturing of a duplex stainless steel : thermal cycle analysis and microstructure characterization

Published

Wire-arc additive manufacturing of a duplex stainless steel : thermal cycle analysis and microstructure characterization

The evolution of microstructures with thermal cycles was studied for wire-arc additive manufacturing of duplex stainless steel blocks. To produce...