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1

Pękanie zimne stali spawanej w środowisku wodnym

Fydrych D.

Przegląd Spawalnictwa

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2012

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R. 84, nr 10

49-57

PL

W artykule scharakteryzowano zagrożenia spawalności stali konstrukcyjnych związane z przeniesieniem spawania do środowiska wodnego. Przedstawiono stan wiedzy oraz wyniki własnych prac badawczych dotyczących wpływu warunków i parametrów spawania pod wodą na wrażliwość do pękania zimnego stali konstrukcyjnych. Zwrócono uwagę na to, że pomimo znaczącej liczby publikacji wciąż wiele istotnych zagadnień pozostaje nierozwiązanych.

EN

The paper characterizes limitations in weldability of structural steel associated with the transfer of welding to the water environment. The state of the art and the results of research works concerning the effect of conditions and parameters on susceptibility to cold cracking of structural steels were presented for most common underwater welding techniques. Attention was drawn to recent research trends and inconsistencies in the information related to the considered issues. A thesis was formulated that, despite of the significant number of publications, still many.

2

Corrosion behaviour of the welded steel sheets used in automotive industry

Katundi D., Tosun-Bayraktar A., Bayraktar E., Toueix D.

Journal of Achievements in Materials and Manufacturing Engineering

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2010

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Vol. 38, nr 2

146-153

EN

Purpose: of this paper is to characterise the corrosion resistance in the steel sheets (Hot dip galvanizing of steel sheets) used in automotive industry. In fact, corrosion of automotive components by road salt is a widely known problem. The different parts under the car body and the interior surface of body panels suffer easily from the corrosive products deposited on roads and used mainly to melt snow. A comparison in a chemical investigation of the corrosion rate for base metals (without welding) and welded steel is required. Therefore, conformity will be accomplished between the corrosion phenomena in simulated corrosion tests and those in actual cars. Design/methodology/approach: Simulated corrosion tests, wet/humidity test and hot dust/dry cycle talk test carried on in laboratory conditions was investigated quantitatively. Dynamic behaviour of the corroded specimens have been tested dynamically to simulate under the crash test conditions. Findings: Studies carried out on the vast corroded samples have shown that the pitting corrosion damage and crack initiation sites have began and propagated generally in the HAZ in the welded steel sheets (Tailored welded blanks - TWB). Research limitations/implications: This paper contains partially results of a common research project. Some limitations exist in application of hot dust/dry cycle talk to the real open air test conditions. All of these results were carried out in the laboratory conditions. Practical implications: The problem is of extreme importance to all academic, scientific, manufacturing, maintenance and industrial societies. The outcome of the proposed study will contribute to the industrial application of ARCELOR-MITTAL. The proposed study will be benefit not only for the car industry and steel makers, but also important for the other industrial applications. The proposed research can be employed in a broad range of applications in oil and natural gas industries. This project will promote multidisciplinary research and cooperation between university and industry. Originality/value: An effective corrosion test proposed by Volvo was applied to the welded sheets (TWB) in an enclosed climatic chamber. This test is a practical and inexpensive test. Impact tensile-crash test makes it possible to analyse the corrosion damage of sheet metals under the dynamic rupture.

3

Charakterystyka spawanych stali konstrukcyjnych według norm europejskich

Ferenc K.

Przegląd Spawalnictwa

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2001

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R. 73, nr 8-9

32-36