Global Machinability of Al-Mg-Si Extrusions

Machining Burrs Formation & Deburring of Aluminium Alloys

“…As shown in (36), the lower the feed rate, the higher the burr height obtained ( Figure 6). The AA4XXX produced most of the times high size burrs and only in very limited cases, the burr size was comparable to others alloys tested.…”

“…However, as stated by Aurich et al [62], in the case of certain materials, the use of lubricant hardens the burrs and complicates the deburring processes. Moreover, the use of cutting fluids seriously degrades the environmental air quality and increases machining costs by 16-20% [36]. One alternative approach with reduced cost and greater environmental benefits is dry machining.…”

“…In addition, chamfering on the external edges of the machined part before the cutting operation is an excellent approach to prevent material deformation at the part edge, and consequently achieve burr size reduction [17]. The burr form and height in drilling are dependent on the material properties and cutting conditions [36]. Images showing typical exit hole appearance are presented in Figure 5 as a function of feed rate.…”