Tool Wear in Intermittent Cutting of AISI 304 Stainless Steel by Thermally-Sprayed Coatings

Abstract:

The use of thermal spray coatings is increasing to improve abrasion resistance, erosion and corrosion resistance. To improve the dimensional accuracy or surface roughness, it is often necessary for thermally-sprayed machine parts to be machined by the removal process. As thermally-sprayed coatings often show difficult-to-cut properties, a cutting, grinding, or honing process is usually employed. Replacement of the grinding process with a cutting process is an effective method for improving productivity. Cutting is performed intermittently because there is a hole in the ball part. However, there are no studies on intermittent cutting of thermally-sprayed coatings. In this study, in order to obtain an effective tool material for intermittent cutting of two types of the thermally-sprayed coating AISI 304, the tool wear was investigated experimentally. The results are as follows: (1) In the case of intermittent cutting of Ni-based self-fluxing alloy coating AISI 304, S_i3N₄ ceramics were considered an effective tool material. (2) In the case of intermittent cutting of thermally-sprayed (WC-Cr-Ni) cermet coating AISI 304, the uncoated cBN having the large grain size of cBN and a high content rate was effective for wear resistance.

• Periodical: Key Engineering Materials (Volume 821)
• Pages: 287-293
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.821.287
• Online since: September 2019
• Authors: Tadahiro Wada*
• Keywords: (WC-Cr-Ni) Cermet Coating, Intermittent Cutting, Nickel-Base Self-Fluxing Alloy Coating, Thermally-Sprayed Coating, Tool Wear

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