Super abrasive machining for PM

Petrilli, Rocco

doi:10.1016/s0026-0657(12)70179-0

Cited by 6 publications

(6 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Moreover, SAM is more versatile than other grinding techniques. For example, if it is compared with creep fatigue grinding (the closest rival), the use of SAM achieves higher speeds, higher material removal rates-up to 1000 mm 3 /s-with lower workpiece loads, and more accurate dimensional tolerances [12,13] is what makes this technology a suitable and efficient alternative to manufacture IBRs nickel-based super alloys [14,15]. Its application to blisk fir-trees has been realized [16,17], as it is shown in Figure 2, due to the fact that the use of this technique increases efficiency significantly.…”

Section: Introductionmentioning

confidence: 99%

Super Abrasive Machining of Integral Rotary Components Using Grinding Flank Tools

González

Calleja

Pereira

et al. 2018

Metals

View full text Add to dashboard Cite

Manufacturing techniques that are applied to turbomachinery components represent a challenge in the aeronautic sector. These components require high resistant super-alloys in order to satisfy the extreme working conditions they have to support during their useful life. Besides, in the particular case of Integrally Bladed Rotors (IBR), usually present complex geometries that need to be roughed and finished by milling and grinding processes, respectively. In order to improve their manufacturing processes, Super Abrasive Machining (SAM) is presented as a solution because it combines the advantages of the use of grinding tools with milling feed rates. However, this innovative technique usually needed high tool rotary speed and pure cutting oils cooling. These issues implied that SAM technique was not feasible in conventional machining centers. In this work, these matters were tackled and the possibility of using SAM in these five-axis centers with emulsion coolants was achieved. To verify this approach, Inconel 718 single blades with non-ruled surfaces were manufactured with Flank-SAM technique and conventional milling process, analyzing cutting forces, surface roughness, and dimension accuracy in both cases. The results show that SAM implies a suitable, controllable, and predictable process to improve the manufacture of aeronautical critical components, such as IBR.

show abstract

Section: Introductionmentioning

confidence: 99%

Super Abrasive Machining of Integral Rotary Components Using Grinding Flank Tools

González

Calleja

Pereira

et al. 2018

Metals

View full text Add to dashboard Cite

show abstract

“…Among grinding techniques with super abrasive grinding tools, it is found the creep feed grinding (CFG) defined as grinding process with larger cutting depths and higher feed rates resulting on higher removal rates decreasing machining time [ 23 ]. Petrilli et al [ 24 ] defined creep fatigue grinding as the closest rival for SAM achieving higher speeds and specific material removal rates up to 1000 mm 3 /mm s [ 20 ]. Major benefits from SAM reside on higher material removal rates at higher speed along with the near-shape surface obtaining more accurate dimensional tolerances [ 24 , 25 ].…”

Section: Introductionmentioning

confidence: 99%

“…Petrilli et al [ 24 ] defined creep fatigue grinding as the closest rival for SAM achieving higher speeds and specific material removal rates up to 1000 mm 3 /mm s [ 20 ]. Major benefits from SAM reside on higher material removal rates at higher speed along with the near-shape surface obtaining more accurate dimensional tolerances [ 24 , 25 ]. The main limitation for the optimal use of this technology is found in spindle speed requirements, up to 90,000 rpm [ 26 ].…”

Section: Introductionmentioning

confidence: 99%

Comparison of Flank Super Abrasive Machining vs. Flank Milling on Inconel® 718 Surfaces

González

Pereira

Fernández-Valdivielso

et al. 2018

Materials

View full text Add to dashboard Cite

Thermoresistant superalloys present many challenges in terms of machinability, which leads to finding new alternatives to conventional manufacturing processes. In order to face this issue, super abrasive machining (SAM) is presented as a solution due to the fact that it combines the advantages of the use of grinding tools with milling feed rates. This technique is commonly used for finishing operations. Nevertheless, this work analyses the feasibility of this technique for roughing operations. In order to verify the adequacy of this new technique as an alternative to conventional process for roughing operations, five slots were performed in Inconel® 718 using flank SAM and flank milling. The results showed that flank SAM implies a suitable and controllable process to improve the manufacture of high added value components made by nickel-based superalloys in terms of roughness, microhardness, white layer, and residual stresses.

show abstract

“…There are some non-conventional abrasive technologies (abrasive flow machining, magnetic abrasive finishing or magneto-rheological abrasive flow finishing) characterized by their good performance for complex geometrical cavities with limited accessibility for conventional processes, achieving great dimensional accuracies and finishing surface quality requirements [61]. However, at the same time, these processes present low material removal rates, implying less productivity in terms of machining time and costs [62].…”

Section: Super Abrasive Machining (Sam)mentioning

confidence: 99%

Manufacturing Processes of Integral Blade Rotors for Turbomachinery, Processes and New Approaches

et al. 2020

View full text Add to dashboard Cite

Manufacturing techniques applied to turbomachinery components represent a challenge in the aeronautical sector. These components are commonly composed of high resistant super-alloys; in order to satisfy the extreme working conditions, they have to support during their useful life. Besides, in the particular case of Integrally Bladed Rotors (IBR), they usually present complex geometries that need to be roughed and finished by milling and grinding processes, respectively. Thermoresistant superalloys present many challenges in terms of machinability what leads to find new alternatives to conventional manufacturing processes. In order to face this issue, this work presents a review of the last advances for IBR manufacturing and repairing processes.

show abstract

Super abrasive machining for PM

Cited by 6 publications

References 0 publications

Super Abrasive Machining of Integral Rotary Components Using Grinding Flank Tools

Super Abrasive Machining of Integral Rotary Components Using Grinding Flank Tools

Comparison of Flank Super Abrasive Machining vs. Flank Milling on Inconel® 718 Surfaces

Manufacturing Processes of Integral Blade Rotors for Turbomachinery, Processes and New Approaches

Contact Info

Product

Resources

About