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

Profiling aluminum vacuum brazing furnaces

Fluke Process Instruments provides a dedicated temperature profiler for aluminum vacuum brazing furnaces. The Datapaq Furnace Tracker system automatically generates CQI-9 and AMS 2750E reports.

Daehan Sinpyeong upgrades rolling mill with new quenching and HSD® lines

South-Korean Daehan Steel Co. Ltd. is modernizing a bar mill . The rolling mill in Daehan´s Sinpyeong works located in the Busan area is designed to produce 130 tons per hour of rebar in diameters from 16 to 32 millimeters up to grade SD 500.

heimatec will be presenting a completely new trade fair concept in Hall 3 at Stand 3A50

The AMB is one of the top international trade fairs for metalworking. heimatec, as one of the technology and quality leaders for high-precision static and driven precision tools for lathes and machining centres, will be presenting the latest products and technologies for productive turning and milling at this important industry meeting. heimatec will be presenting a completely new trade fair concept in Hall 3 at Stand 3A50.

Hertwich to supply multi-chamber melting furnace to Hydro Extrusion Lichtervelde NV

Hertwich Engineering has received an order from Hydro Extrusion Lichtervelde NV for the supply of an Ecomelt-PS200 multi-chamber melting furnace including a skimming machine.