Sergey Ivanovich Nikitin

Title: Sergey Ivanovich Nikitin and Advances in Steel Hardening

Introduction

Sergey Ivanovich Nikitin is an inventor associated with Moscow, Russia, whose work focuses on structural steel and heat-treatment processes. His patent portfolio includes 2 patents addressing steel hardenability and the production of parts with controlled hardened depths.

Latest Patents

Nikitin’s patent, “Process for heat treatment of parts made from low and specified hardenability structural steel,” describes a method for case-hardening plate-shaped, cylindrical, and spherical steel parts. The process uses through-surface heating followed by very rapid quenching. Graphs relate part dimensions and critical ideal-diameter (DI) values to the resulting hardening depth, helping determine the steel composition needed to achieve a desired result. The method also specifies limits on steel components and uses a formula intended to support fine grain size and reduce the risk of cracking during rapid quenching.

His patent, “Process for making low and specified hardenability structural steel,” describes producing steel with a desired low hardenability in an electric-arc or induction furnace. The process controls the maximum content of manganese, silicon, chromium, nickel, and copper in the metal charge, then uses carburization and deoxidation with aluminum, titanium, or vanadium to achieve the target DI. The invention aims to provide improved mechanical properties and stable, specified hardenability.

Career Highlights

Nikitin’s patented work addresses two connected stages of steel production: creating steel with controlled hardenability and applying heat treatment to produce a desired hardened depth in finished parts. Together, these approaches offer a way to tailor steel composition and processing to the shape and dimensions of a component.

Collaborations

Nikitin’s listed coworkers include Anatoly Alexeevich Kuznetsov and Alexey Alexandrovich Kupriyanov. The available information does not specify their roles in the patented work.

Conclusion

Sergey Ivanovich Nikitin’s inventions focus on controlling steel hardenability and heat treatment to achieve predictable mechanical properties and hardened depths in structural steel parts.