Abstract
Mikrostrukture i osobine različitih pripremaka za izradu čeličnih čaura
Highlights
THE most of the steel cartridge cases are produced of low carbon steel
Visual examination and dimension measurement The specimens of the cups after 1st drawing are shown in Larger dimension deviation was found on the cup 2. All these defects suggest non-regular material flow during drawing. This can be attributed to larger load, due to contact between tool and workpiece or poor lubrication, as well as unsupported or noncentric tools
Results showed that chemical composition of the bars is according to chemical composition C10E steel (SRPS EN 10084)
Summary
THE most of the steel cartridge cases are produced of low carbon steel. Plate or rod materials as a preform are used [1]. Low carbon steel shave moderate strength and hardness in the as-rolled or extruded condition and good formability in the annealed condition. It can be hardened and strengthened by cold work. The formability of these steels allows high reduction of the wall thickness during manufacture of a cartridge case. It has fair machinability and good weldability [2]
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