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IMPROVEMENT OF WEAR RESISTANCE PROPERTIES OF METAL GEARS USING LASER SURFACE HARDENING

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SCIENCE AND INNOVATIVE DEVELOPMENT

SCIENCE AND INNOVATIVE DEVELOPMENT

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This study investigates efficacy of laser surface hardening as a method to enhance the wear resistance of metal gears, comparing it with traditional hardening techniques such as induction and flame hardening. The laser surface hardening process involves using a high-energy laser beam to rapidly heat the gear surface, resulting in microstructural changes that boost hardness and wear resistance. Experiments were made using two common gear steels, JIS-SCM415 and JIS-S45C, with the laser parameters optimized to achieve the desired hardness profile. Findings showed that the best hardening was achieved with a laser power of 1 000 W, scanning speed of 100mm/s, and a spot size of 1 mm, resulting in a surface hardness of 672 HV and a core hardness of 502 HV. Wear testing indicated that the wear rate of laserhardened gears was comparable to new conventional gears, with a weight loss of 10-12 mg/hr. The study demonstrates that laser surface hardening can significantly improve the wear resistance of gears, with minimal distortion and precise control over the hardened depth, making it a promising alternative to conventional hardening methods for enhancing gear longevity and performance.

AUTHORS

A.Norkobilov

Toshkent kimyotexnologiya instituti Shahrisabz filiali, “Muhandislik texnologiyalari” kafedrasi

A.Elmnov

Toshkent kimyotexnologiya instituti Shahrisabz filiali, “Muhandislik texnologiyalari” kafedrasi

D.Tojiyev

Toshkent kimyotexnologiya instituti Shahrisabz filiali, “Muhandislik texnologiyalari” kafedrasi

Tags

# износостойкость# surface treatment# wear resistance# laser surface hardening# metal gears# microstructural changes# gear steels# hardening parameters# wear testing# gear material properties# lazerli yuzani mustahkamlash# yeyilishga bardoshlilik# metall tishli g‘ildirak# mikrostrukturaviy o‘zgarish# tishli po‘latlar# qattiqlik parametrlari# yeyilishga sinash# tishli material xususiyatlari# sirtga ishlov berish# лазерная поверхностная закалка# металлические зубчатые колёса# микроструктурные изменения# зубчатые стали# параметры закалки# испытания на износ# свойства материала зубчатых колё# поверхностная обработка

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Article Identifiers

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https://eroi.uz/11.0094/A1124-0017

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Not Available

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