Toshiaki Takahashi Takaaki Ozawa Hajime Takahashi OVERVIEW: Steel industry control systems tend to be large, comprising motors, drives, PLCs, and process computers among other components. In addition to reliability, they require the speed of response to perform realtime electrical and mechanical control. To achieve this, Hitachi uses the latest computing and information technology. Hitachi is a...

In this Study, vanadium recovery from the steelmaking converter slag was studied. Salt roasting-basic leaching is the process which was applied to separate and extract vanadium from steel making slag. Ground slag was roasted after mixing with determined quantities of sodium carbonate. The effect of time and temperature of roasting and sodium carbonate content were studied. The optimum temperatu...

aqueous polymer quenchants are being used increasingly in steel heat treatment industries as a substitution for conventional quenchants. by adjusting the quench parameters of the polymeric media, it is possible to achieve desirable microstructure and mechanical properties in addition to reduction in distortion and cracking. in this work, polyalkylene glycol (pag) aqueous solution was used as th...

Nowadays, every company cares about reducing their waste and cost. While they are doing that would prefer to make it effectively efficiently. That is why the 5S rule recently a more suitable tool use for companies. In this paper, It was studied how implement in an iron-steel industry with interview of quality engineer who works company. This case study made be example sector by photographing be...

This investigation compared four conventional vehicle armour materials for performance under blast loading. The parameters measured were resistance to deformation, mechanical toughness and metallurgical microstructure. It was found that two of these, the M steel and A steel, showed the least deformation and M steel showed better shock energy absorption. B steel had high toughness but showed sig...

supervisors have critical role in the provision of support in workplace. the present study examined degree of perceived supervisor support related to experienced physical symptoms and psychological distress among employees of isfahan steel company, isfahan, iran. the sample included of 189 employees of the company in 2011 who completed questionnaires about supervisor support, physical symptoms ...

Background: The austenitic stainless steel 304L is widely used as a structural material for which the finished surface has significant effect on the service performance. A study of the grinding process with regard to the quality of the ground surfaces is therefore interesting from the point of view of both industrial application and scientific research. Method: This work investigates the influe...

Management of Tata Steel, the largest steel making company of India in the private sector, felt the need to develop a framework to determine the levels of ergonomic performance at its different workplaces. The objectives of the study are manifold: to identify and characterize the ergonomic variables for a given worksystem with regard to work efficiency, operator safety, and working conditions, ...