Q2. What have the authors stated for future works in "Laser surface texturing of a wc-coni cemented carbide grade: surface topography design for honing application" ?
Further research in this area, focused on quantitative analysis of the cutting capability and wear resistance of surface textured cemented carbide tools, is then recalled.
Q3. How many axes were used to sculpt hexagonal pyramids?
surface patterning action was aimed to sculpt hexagonal pyramids regularly distributed along the x- and y- axis, separated from each other, and respectively, about 400 µm in both directions.
Q4. What was the effect of micro-cracks on the rake surface?
Micro-cracks seemed to initiate close to the binder-carbide interfaces, and later penetrated into the grains inducing final cleavage of the hard particles.
Q5. What is the common type of honing stone used for precision machining?
Honing stones employed for precision machining applications are usually fabricated from composites consisting of cubic boron nitride particles, acting as super hard abrasives, embedded in a metallic matrix.
Q6. What is the main reason why surface texturing is used for precision machining?
Surface texturing of structural materials usually yields improved functional performance, significant life extension and even wider application opportunities [3,4].
Q7. What are the main characteristics of the surface topography of the honing tool?
Geometrical parameters involved in the surface topography design aimed to simulate microstructural assemblage of B151 honing tool: (a) pyramid distribution, (b) geometry of single hexagonal pyramid.
Q8. What is the way to simulate a WC-CoNi honing stone?
Preliminary findings from abrasive tests, attempting to simulate honing-like serviceconditions, demonstrate that LST shaped cemented carbide tools can effectively remove material from a steel workpiece, yielding an enhanced and smoother surface finishing.
Q9. What was the machining test of the WC-CoNi tool?
Rotation speed (rpm)Oscillation speed(mm/min)Oscillation numberFeed(µm) Flowrate(bar)Lubricant viscosity (mm²/s)In this cutting test, the LST processed WC-CoNi cemented carbide was used as test tool sample.
Q10. What was the effect of the binder removal on the surface of the pyramid?
As the binder was removed, the generated grain micro-debris became free and either flushed away by lubricant action or spread out after chip contact (Figure 17(e)).
Q11. What is the impact of the new M ANUS CRIP TAC CEPT?
From this viewpoint, the surface topography of the cutting surface of CBN composites maintains a dynamic stability due to the self-dressing phenomena, i.e. newM ANUS CRIP TAC CEPT EDabrasive grains will come out from the composite matrix when the old ones are worn out.
Q12. What is the abrasive effectiveness of honing stones?
In general, the abrasive effectiveness of honing stones is directly related to the intrinsic surface topography resulting from the super hard grains protruding out of the matrix (e.g. Ref. [1]).
Q13. What was the procedure used for the surface topography of a conventional honing stone?
It was done following an experimental protocol consisting of five steps: specimen preparation, surface scanning, image assembly, image digital processing and final surface quantification.
Q14. What is the shape of the pyramids after abrasive machining?
As it has been referred above, shape of pyramids was basically unchanged after abrasive action, i.e. hexagonal profile can still be discerned and no obvious disruptive damage has been induced by the cutting process, such as structural collapse, grain eruption or debris stacking, among others.
Q15. What are the surface morphological changes within a single pyramid?
Surface morphological changes within one single pyramid induced by the abrasivemachining process: (a) and (d) contacting area, (b) and (e) rake surface, (c) and (f) flank surface.