Green manufacturing: Creating high strength metal matrix structures - HYBRIDSURF

Reference number
Coordinator RISE IVF AB - Avdelningen för Tillverkning
Funding from Vinnova SEK 449 433
Project duration November 2018 - November 2019
Status Completed
Venture Groundbreaking ideas in industrial development
Call Banbrytande idéer inom industriell utveckling 2018

Purpose and goal

HYBRIDSURF intended to evaluate the potential of introducing a totally new approach for hard turning, where the inherit disadvantages like i) control of (minimizing) dimensional errors, ii) industry acceptance of surface and subsurface microstructure alterations surfaces with white layers on functional surfaces, iii) control of (or minimizing) surface tensile residual stresses were turned into advantages. The aim is to use improved cooling strategies with modified cutting edges and process settings to create an ultra-high strength surface on the top layer while machining.

Expected results and effects

HYBRIDSURF showed the potential in creating the intended surface modification (surface thickness, occurrence, etc), however, given the inferior cooling we were not successful in producing the desired type of surface modification as planned at higher cutting speeds, e.g. higher productivity. This shows the need of superior cooling while hard turning to suppress the cutting temperatures and thereof being successful in producing a superior surface quality at higher cutting speeds, which is also considered to have a strong positive impact on the strength of the as-produced parts.

Planned approach and implementation

The project was started via a state-of-the-art literature search on what is happening in the area and what is the latest. A DoE was then compiled, which included both simulations and experiments. Where simulations were used as a guide to understand how to minimize our experiments. Subsequently, a number of different experiments were carried out, which in turn were characterized via LOM, SEM and XRD and then feedback the collected data against the simulations. Analysis and characterization were performed at RISE and Chalmers and the tests were conducted at Chalmers.

The project description has been provided by the project members themselves and the text has not been looked at by our editors.

Last updated 11 February 2020

Reference number 2018-04263

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