Welding of High Strength Toughened Structural Steel S960QL
Journal Title: Biuletyn Instytutu Spawalnictwa - Year 2017, Vol 61, Issue 2
Abstract
The article discusses the effect of the thermal conditions applied during the MAG welding of steel S960QL and the mutual annealing of runs on the mechanical properties as well as on the macro and microstructure of welded joints made using various values of cooling time t8/5. The research described in the article also involved the comparison of the above-named results with those obtained during a thermal simulation. In addition, the article presents the test results concerning the examination of the coarse and fine-grained areas of the HAZ of welded joints. The test results made it possible to optimise the value of cooling time t8/5 when welding steel S960QL.
Authors and Affiliations
Krzysztof Madej, Robert Jachym
The Quality of Butt-Welded Joints in Steel Railway Bridges in Szczecin
This year marks the 40-th anniversary of Professor Andrzej Fabiszewski’s death (1924–1978). He was a forerunner of the X-ray testing of butt welds in railway bridges in Poland. Professor Fabiszewski spent most of his lif...
Numerical Analyses in the Modelling of Spot Resistance Welding Processes
The article presents the basics of the modelling of spot resistance welding processes, describes mechanisms to be taken into consideration in relation to numerical analyses of the above-named processes, briefly describes...
The World’s First Road Truss Welded Bridge in the Light of NDTs
December 2018 marks the 90-th anniversary of the construction (1928) of the world’s first road truss welded bridge (put into operation in August 1929). The bridge designed by Professor Stefan Bryła is a truss bridge with...
Effect of a Gap between Elements Being Joined on the Fatigue Service Life of Joints Welded on a Steel Backing Strip
In accordance with standard PN-EN ISO 9692-1, when making welded joints using a backing strip, the maximum distance between elements being joined should amount to 15 mm. In certain cases, the use of a gap greater than th...
Effect of a One-Time Repair of a Welded Joint Made in Steel S960QL on the Properties of the HAZ
The fabrication of steel structures is often accompanied by the necessity of removing defects and welding imperfections formed during welding. An additional thermal cycle accompanying the making of a new weld has an undo...