METHOD FOR OBTAINING HARDENED WORKPIECES OF FASTENERS MADE OF STAINLESS AUSTENITIC STEEL Russian patent published in 2021 - IPC C21D8/00 C21D1/02 C21D9/00 

Abstract RU 2749815 C1

FIELD: metallurgy.

SUBSTANCE: invention relates to a method for producing hardened workpieces of fasteners made of stainless austenitic steel. The method includes pre-quenching, plastic deformation by radial forging at room temperature to obtain a workpiece of a fastener and subsequent heat treatment. Pre-quenching is carried out at 1050°C, plastic deformation is carried out with a degree of deformation of 85-90% to ensure a given diameter of the workpiece of the fastener in the form of a pin, and as a subsequent heat treatment, annealing is carried out at 400-500°C for 1-2 hours, followed by cooling in air to obtain a gradient structure of the workpiece of the fastener.

EFFECT: reducing the number of operations of strengthening the material of the workpieces.

1 cl, 3 dwg

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RU 2 749 815 C1

Authors

Panov Dmitrij Olegovich

Naumov Stanislav Valentinovich

Pertsev Aleksej Sergeevich

Kudryavtsev Egor Alekseevich

Simonov Yurij Nikolaevich

Salishchev Gennadij Alekseevich

Dates

2021-06-17Published

2020-11-06Filed