Content area
This article presents the wear characteristics of the working surface of WC-Co (Tungsten Carbide–Cobalt) tungsten carbide tools obtained using the innovative U-FAST (Upgraded Field-Assisted Sintering Technology) method for particleboard machining. Three groups of tools with a similar chemical composition but differing WC (Tungsten Carbide) grain sizes were tested. Milling tests were carried out on a CNC (Computer Numerical Control) machine tool with the following cutting parameters: spindle rotation at 15,000 rpm, a feed rate of 0.25 mm per tooth, and a feed rate of 3.75. The experimental results show that tools with submicron WC grit sizes of 0.4 µm and 0.8 µm have the longest tool life. Wear of the cutting edges occurred through the removal of the cobalt bond between the tungsten carbide grains, leading to fracture and mechanical removal of the grains from the cutting edge surface. The similarities in the relative wear characteristics of blades with submicron tungsten carbide grain sizes suggest that micro-abrasion and bond phase extrusion may be the main wear mechanisms under the experimental conditions. Nanometric WC grain size significantly influences tool wear through chipping and cracking.
Details
Cemented carbides;
Upgrading;
Numerical controls;
Machine tools;
Chipping;
Chemical composition;
Sintering;
Energy consumption;
Cutting wear;
Tool wear;
Efficiency;
Furniture industry;
Wear mechanisms;
Tool life;
Grain growth;
Carbide tools;
Grain size;
Temperature;
Milling (machining);
Tungsten carbide;
Cutting parameters;
Particle board;
Cobalt;
Feed rate
; Bałaga Zbigniew 2
; Podziewski Piotr 1
1 Institute of Wood Sciences and Furniture, Department of Mechanical Processing of Wood, Warsaw University of Life Sciences, Nowoursynowska Street, 166, 02-787 Warsaw, Poland; [email protected]
2 Faculty of Production Engineering and Materials Technology, Czestochowa University of Technology, Armii Krajowej Street, 19, 42-201 Czestochowa, Poland; [email protected]