LASER HARDENING ALLOY STEELS

G.I. Kostyuk, N.V. Rudenko

Suggested in the paper studies the influence of the parameters of laser hardening of the depth of the hardened layer, its structure and hardness. With this purpose was plunged laser processing of low-carbon steel (0,1 % C), micro-alloying niobium in the number of 0,02 %. Laser hardening also suffered from steel with 0,3 to 0,4 % C doped with chromium, nickel, molybdenum. From the number of low-alloyed steels, laser hardening were subjected to become X, 9ХГ and ХВГ, as well as medium alloy steel XB4. Special emphasis should be placed on a laser hardening steel ШХ15. Laser hardening subjected to the ready tool, the last final heat treatment, made of different steel grades - Р18, P9, R6M5, as well as more complex Р9К5, Р6М5К5, Р9М4К8, Р9М4К8Ф, Р12Ф514. Among corrosive steels, laser hardening subjected to chrome steels martensitic class 20Х13, 30Х13, 40Х13, 95Х18, as well as belonging to the class of heat-resistant steel 11Х12Н2В2МФ. The research data are relevant in the context of the modern trends improve the operational characteristics of aircraft parts.

Key words: laser heating of the surface, the structure of the heating zone, the depth of the heating zone, the hardness of the heating zone, microhardness of heating zones.