Improvement of the wear resistance of hot forging dies using a locally selective deposition technology with transition layers

摘要

A locally selective deposition technology with transition layers using a direct energy deposition process is investigated to improve the wear resistance of hot forging dies. A transition layer between the deposited region and the substrate is created to reduce mechanical and thermal problems as a buffer in interface regions. Design data of transition layers are obtained from experiments. Numerical analyses have been performed for deposited regions of dies. From the hot forging experiment, it has been shown that the proposed locally selective deposition technology with a buffer layer can help to dramatically improve the wear resistance of hot forging dies. (C) 2016