Cold drawing schedules for RSt 34-2 (1.0034) steel wire for correction of overheating defects and breakless ensuring
نویسندگان
چکیده
The paper’s authors researched the defects correction for RSt 34-2 (1.0034) steel wire, obtained as result of its overheating at 1140...1160 °C. Instead re-heat treatment method, proposed five cold drawing, annealing and combination schedules, which ensure increase in strength to DIN EN ISO 6892-1-2020 requirements. experiments were performed on 4 mm diameter wire with increased grain size (up 70 μm). It was found that low initial values material’s ultimate yield there are frequent breaks ends clamping by tongs. An equation allows predict acceptable cross-sectional area end sections during drawing has been devised. inequation relating Korber-Eichinger parameters sharpened sizes reduced due tongs jaws deepening after work out. experimentally proved overheated process designing taking into account conditions this guarantees elimination both (at beginning) stable stage. processes have developed eliminated additional heat operation correction.
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Cold drawing process is one of the most used metals forming processes in industries for forming seamless tubes. This process of plastic deformation of metals occurs below the recrystallization temperature and is generally performed at room temperature. When metal is cold worked, upon the release of forming force, the springback occurs. In this paper, the springback effect of the seamless tube t...
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ژورنال
عنوان ژورنال: E3S web of conferences
سال: 2021
ISSN: ['2555-0403', '2267-1242']
DOI: https://doi.org/10.1051/e3sconf/202128406005