scholarly journals The Phonomenon of Material Side Flow During Finish Turning of EN X153CrMoV12 Hardened Steel with Tools Based on Polycrystalline Cubic Boron Nitride

2019 ◽  
Vol 41 (4) ◽  
pp. 265-271
Author(s):  
M. Ociepa ◽  
M. Jenek ◽  
E. Feldshtein ◽  
K. Leksycki
Keyword(s):  
Boron Nitride ◽  
Cubic Boron Nitride ◽  
Hardened Steel ◽  
Finish Turning ◽  
Polycrystalline Cubic Boron Nitride ◽  
Side Flow

Tool Wear of Polycrystalline Cubic Boron Nitride Compact Tools in Cutting Hardened Steel

2012 ◽  
Vol 488-489 ◽  
pp. 724-728 ◽  
Author(s):  
Tadahiro Wada
Keyword(s):  
Particle Size ◽  
Boron Nitride ◽  
Tool Wear ◽  
Tool Life ◽  
Cubic Boron Nitride ◽  
Cutting Speed ◽  
Hardened Steel ◽  
Polycrystalline Cubic Boron Nitride ◽  
Cbn Tool ◽  
High Cutting Speed

Using polycrystalline cubic boron nitride compact (cBN) tools, which have different cBN contents and cBN particle sizes, the influences of both the cBN content and the cBN particle size on tool wear in turning of hardened steel at various cutting speeds was experimentally investigated. Three types of cBN tools (a cBN content of 45-55% and 75%, and a cBN particle size of 0.5 μm and 5 μm, respectively) were tested. Furthermore, three kinds of chamfered and honed cutting edges were also used. The main results obtained are as follows: (1) In the case of the cBN tools with the same cBN particle size of 5.0 μm, the tool life of the cBN tool with a cBN content of 75% was longer than that of the cBN tool with a cBN content of 45% at low cutting speed. However, at high cutting speed, the tool life of the cBN tool with a cBN content of 75% was shorter. (2) The tool life of the cBN tool with both a cBN content of 55% and a cBN particle size of 0.5 μm was the longest. (3) The tool wear of cBN tools decreased with a decrease in chamfer width.

scholarly journals The Geometric Surface Structure of EN X153CrMoV12 Tool Steel after Finish Turning Using PCBN Cutting Tools

Coatings ◽  
2021 ◽  
Vol 11 (4) ◽  
pp. 428
Author(s):  
Michał Ociepa ◽  
Mariusz Jenek ◽  
Piotr Kuryło
Keyword(s):  
Boron Nitride ◽  
Cubic Boron Nitride ◽  
Cutting Tools ◽  
Material Surface ◽  
Roughness Parameters ◽  
Finish Turning ◽  
Polycrystalline Cubic Boron Nitride ◽  
Coated Tools ◽  
Flank Surface ◽  
Geometric Surface

The article presents the results of studying the effects of coated (TiN, TiAlN) and uncoated polycrystalline cubic boron nitride (PCBN) machining blades on the key geometric structure parameters of the surface of hardened and tempered EN X153CrMoV12 steel after finish turning. A comparative analysis of the use of coated and coated cutting tools in finish turning of hardened steels was made. Tool materials based on polycrystalline cubic boron nitride PCBN (High-CBN; Low-CBN) have been described and characterized. The advantages of using TiN and TiAlN-coated cutting tools compared to uncoated were demonstrated. The lowest influence of the feed on the values of all tested roughness parameters was noted for surfaces treated with TiN- and TiAlN-coated tools (both with 50 vol.% of CBN). For uncoated tools (60 vol.% of CBN) for feeds f = 0.2 and 0.3 mm/rev., the highest values of Ra and Rz roughness parameters were found. Moreover, the lack of protective coating contributed to the occurrence of intense adhesive wear on the flank surface, which was also in the range of the feed values f = 0.2 and 0.3 mm/rev. The analysis of material surface after treatment with the uncoated tools with the feed f = 0.2 mm/rev. showed the occurrence of the phenomenon of lateral material flow and numerous chip deflections.

Sign in / Sign up

Export Citation Format

Share Document