Tadeusz Zaborowski

Verification of Cutting Zone Machinability during the Turning of a New Austenitic Stainless Steel

In this study presents the conclusions of machinability tests on a new austenitic stainless steel X5Cr18Ni9MoTiN, which applicated in food processing industry, and describes important concurrent parameters for the cutting zone during the process of turning. The machinability of stainless steels is examined based on the cutting tests, cutting speed presented by v c-T diagrams. The effect of cutting speed are analysed by chip formation and tool wear mechanisms. Based on the cutting tests, cutting speeds of 40 to 200 m/min, feed rate of 0.04 to 1.2 mm and solid carbide indexable insert CNMG 120404-MF. Tool wear criterion, VB K value of 0.3 mm. Chip were analysed by Semi Electron Microscopy (SEM).

Tracking Navigation System Based on Photogrammetry Principles

An approach to implementation of spatial navigation based on photogrammetry principles is proposed. A prototype of a tracking navigation system implementing the abovementioned approach is developed; experimental research of developed system is conducted.

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

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%.

Study of Evaluation Machinability of a Stainless Steels and Accompanying Phenomena in the Cutting Zone During Machining

The production process cutting process (working materials) is currently still one of the fundamental technologies of production parts. It is therefore necessary that the cutting process was effective, the products are competitive mainly in terms of production costs. If we consider the technological system M-machine, T-tool, W-workpiece and F-fixture, each element of this system has a different percentage of production costs. But the most important reason for the need of productive machining production time is that it is necessary to always use the best. This is a guide to success for a large part of production processes, ie maximum number of products per unit of time. Especially during operation, for variations in technological progress in production, there are significant changes in the cost per piece produced parts. Currently we can apply several alternatives for increasing productivity cutting process: