
488 Fundamentals of Machining Processes
TABLE 16.4
Typical Tolerances, Roughness, and Removal Rates of NTMPs
Energy Type
MTMPs
WP Material
Typical
Tolerance
T (±μm)
Typical
Roughness
Ra (μm)
Material Removal
Typical MRR
(cm
3
/min)
Penetr.
Rate f
(mm/min)
Trav.
Speed ν
t
(m/min)
Spec. RR
kW/cm
3
.
min
Mechanical
Jet machining
AJM
All Materials
— 0.1–0.8 Very low 0.015, MD MD MD 1000
WJM ±100–±250
±25 (p)
1.2–2.5 MD MD MD 5000
AWJM ±125–±500 1–1.8 MD 2–2500 MD Up to 7.5,
MD
4000
USM ± 12.5–±25
±5 (p)
±2.5 (r)
0.3–1.2,
MD
0.2 (p)
0.1 (r)
0.05–1, MD, PD 0.3–10 MD — 5–10
CH
CH milling ±25–±80
±12.5 (p)
±7 (r)
0.8–6.3
0.4 (p)
0.15 (r)
0.002–250 AD, MD 0.02–0.04
MD
— CH energy
PCM
Conductive ...