Research of Tool Durability in Surface Plastic Deformation by Wide Burnishing of Cast Iron without Metalworking Fluids

S.N. Grigoriev; N.M. Bobrovskij; P.A. Melnikov; Igor N. Bobrovskij; Tadeusz Zaborowski

doi:10.4028/www.scientific.net/KEM.746.120

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HomeKey Engineering MaterialsKey Engineering Materials Vol. 746Research of Tool Durability in Surface Plastic...

Research of Tool Durability in Surface Plastic Deformation by Wide Burnishing of Cast Iron without Metalworking Fluids

Abstract:

The hyper productive surface plastic deformation processing technology called as wide burnishing (WB) was developed in Russian Federation. The mechanics of new WB technology is different from the classic SPD technologies (rolling or burnishing). For example applied force during processing of burnishing is 150-300 N, of WB is 2500-5000 N due to condition of process implementation in mass production with limited processing time (3-4 turnovers of workpiece). WB also has a high degree of deformation due to a multiple deformation passes. The purpose of the study was to determine the durability of a burnishing tool with the working surface made of the hard alloy with different dispersion. During the durability tests were tested VK6 alloy with the chemical composition of WC-94%, Co-6%, grain size of 2.1...3.4 micron (hardness HRA 88.5) and similar in chemical composition fine-grained hard alloy H10F (WC-90%, Co-10%) produced by Sandvik-MKTS with grain size of 0.5...0.9 micron (hardness HRA 92.1). Processing was conducted without lubricoolants. The acquired data presents that the roughness exceeds the tolerance during the processing by tool made of H10F alloy later than by tool made of VK6 alloy. At the same time increase of durability is from 60% to 80%.

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Periodical:

Key Engineering Materials (Volume 746)

Pages:

120-125

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.746.120

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Online since:

July 2017

Authors:

S.N. Grigoriev, N.M. Bobrovskij*, P.A. Melnikov, Igor N. Bobrovskij, Tadeusz Zaborowski

Keywords:

Burnishing Tool, Hard Alloy (HA), Surface Plastic Deformation, Wide Burnishing

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