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Optimizing of hardening depth for small gears

Master thesis project

Functional area: Atlas Copco Industrial Technique, Mechanics Department, Mechanical systems
Recruiting manager: Tobias Syvertsson, Manager Mechanical systems
Phone: +46(0)8 743 9326
Email: tobias.syvertsson@se.atlascopco.com
Other contacts: jan.i.eriksson@se.atlascopco.com


This project is intended to investigate optimal hardening depth regarding strength and fatigue limit for small gears in an industrial application.


We have noticed major differences in life due to small change in hardening spec. We would like to investigate this in a scientific way to understand the impact in our products. We use today advanced materials and do not hesitate to test new ways of improvement. Today, case hardening process is primarily used. Can other processes e.g. nitriding replace case hardening process for certain product articles?
Accelerated life tests will be done in lab environment for test and verifying will be done. Other fatigue testing and modifying of hardening processes, practical and in theory, can be done depending on input from Thesis worker.


This thesis project will be considered a success when the parameter results from laboratory and in-house testing shows an increase of strength and fatigue limit. Thesis scope will be further defined in collaboration between supervisors and student.


Master student in mechanical engineering within material science.

Education requirement

• Mechanical engineering
• Material technology

Level of thesis project

• Master thesis

How to apply

About Atlas Copco Industrial Technique

Atlas Copco’s Industrial Technique business area provides, through a global network, industrial power tools and assembly solutions, including tightening, bolting, riveting, adhesive dispensing, quality assurance products, material removal, software and service. The business area innovates for sustainable productivity for customers in the automotive and general industries, maintenance and vehicle service. Principal product development and manufacturing units are located in Sweden, Germany, United States, United Kingdom, France, Japan and Hungary.

About the Atlas Copco Group

Atlas Copco is a world-leading provider of sustainable productivity solutions. The Group serves customers through its innovative compressors, vacuum solutions, generators, pumps, power tools and assembly systems. Atlas Copco develops products and services focused on productivity, energy efficiency, safety and ergonomics. The company was founded in 1873, is based in Stockholm, Sweden, and has a global reach spanning more than 180 countries. In 2017, Atlas Copco (excluding Epiroc) had revenues of BSEK 86 (BEUR 9) and about 34 000 employees.