FIELD: hardened cylindrical billets production.
SUBSTANCE: invention relates to a method for producing hardened cylindrical billets of austenitic stainless steel fasteners. The method includes preliminary hardening of steel, plastic deformation by radial forging to obtain a bar stock, and subsequent heat treatment in the form of annealing. Preliminary hardening of steel 08Х18Н10Т is carried out at 1050°C, plastic deformation by radial forging is carried out with a degree of deformation of 85–90% at room temperature to ensure a given diameter of the bar stock, and annealing at 600–650°C for 1 –2 hours with air cooling to obtain a bimodal structure.
EFFECT: increase in plasticity and impact strength without a significant decrease in strength characteristics and in an increase in the operational properties of hardened blanks.
1 cl, 3 dwg, 1 tbl, 5 ex
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