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| Kiss I. |
| RESEARCH AND EXPERIMENTS REGARDING THE MANUFACTURING OF METALLIC MATERIALS WITH A BETTER CUTTING CAPACITY |
Abstract
The researches and experiments we have carried out on the improvement of the processing easiness aimed at determining a technology of sulphur addition, so that the assimilation degree should not be more that 10% different form one charge to another. The experiments have been conducted at an electric steel plant equipped with 50 tone furnaces. The results of the experiments are given both graphically and analytically.
As these steels are meant for parts that work in conditions of shock, wear and fatigue they imply supplementary restrictions as to the means to be used in order to improve their processing easiness. The inserts that are favorable in case of cut-processing are to be accepted only to the extent to which their quantity, shape and distribution does not significantly affect the resilience, resistance to fatigue, the cross sectional mechanic characteristics, their cementing capability and hardening capacity, etc.
Among the addition elements used in view of improving the processing easiness by inclusion forming (both simple and complex), by absorption on the sulphide and oxide inclusion surface, as well as by the formation of isolated islands in the base mass (their dimensions ranging between 0.08 – 0.15?m) sulphur, phosphorous, lead, selenium and tellurium continue to be used.
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| Keywords: researches|experiments|steels|metal constructions|sulphur addition|technology|improvement of the processing easiness| |
| No 2 (2008), p. 292-297 |
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