In the present work, the effect of welding procedure on weldability of conventional high manganese steel compared with the recent developed ladle treated one. This research aims at disclosing the microstructure, hardness, impact toughness and tensile strength of the welded joints. The optical micrograph of the conventional high manganese steel welded joint without cooling between passes shows that the heat affected zone (HAZ) has a high density of carbides formed at the grain boundaries. However, cooling between passes using compressed air resulted in a decrease in the density of carbides formed at the grain boundaries of the HAZ. In the ladle treatment samples, the microstructure shows an increase the density of the eutectic phase of the HAZ as a result of welding without cooling. On the other hand, application of cooling using compressed air between passes results in a low density of the eutectic phase in the HAZ.

Application of cooling between deposited passes resulted in a significant improvement of the impact toughness of weldment in both conventional and ladle treated samples of high manganese steel. The result obtained by SEM observation shows the reduction of both carbides at the grain boundaries in HAZ of conventional high manganese steel and the eutectic phase in HAZ of ladle treated one.

Due to rising raw material prices, the fullest possible recycling of metals is becoming increasingly important. For example, non-ferrous metals are pelleted for reprocessing before they are further processed.

COPT Center offers the stage for Leybold’s video shooting for its newest vacuum product

Cooperation between Universities and industrial enterprises are much more common in other countries, such as Great Britain and the United States. In Germany, cooperation is mostly restricted to the technology level and the subsequent transfer of basic research knowledge gained at the universities to the mass production opportunities of industry.

Results used to generate material cards for optimised simulation models

Before materials can be used for a particular application, their behaviour has to be analysed under different mechanical and climatic conditions. The results from static, dynamic and thermochemical tests form the basis for comprehensive material characterisations which are key to successful product development. As a leading provider of development services, ARRK Engineering has therefore established an in-house materials laboratory close to its headquarters in Munich. This enables car manufacturers, machine and plant engineering companies and also the aerospace industry to obtain all-round support from the ARRK Engineering specialists in this field. Moreover, the company plans to use the information from the tests to generate material cards with a view to optimising the simulation models for structural and crash calculations.

news in steel

Divestment confirmed of Ruukki Construction’s business operations in Russia

As communicated in July, SSAB has agreed to divest Ruukki Construction’s business operations in Russia (OOO Ruukki Rus) to the Russian company OAO Salavatneftemash. The transaction has received the approval of the Russian competition authorities and has now been completed. The transaction excludes the right to the Ruukki brand.

High yield strength and close tolerances

Spanish welded steel tube specialist Bornay S.L. has ordered an HF (High Frequency) tube welding line, type RD 40, from SMS group for its Alicante works. SMS group is the single-source supplier of all technical equipment from strip preparation to the cut-off-saw.

SSAB and Kemppi create a joint digi solution to speed up the welding process

SSAB and welding solutions company Kemppi have successfully piloted sending material certificates automatically from SSAB’s SmartSteel cloud to welding equipment.

Tibnor to acquire Sanistål’s steel distribution business

SSAB’s subsidiary Tibnor has agreed to acquire the steel distribution business of the Danish company Sanistål A/S, Denmark’s second largest steel distributor. This supports SSAB’s strategic target to strengthen its Nordic home market position.