
102 Advanced Manufacturing and Processing Technology
FIGURE 4.35 Schematic diagram of PAMM. PAMM, plasma arc micromachining.
4.3.7.3 Advantages
1. MRR is faster.
2. Hard and difcult-to-cut materials are processed easily.
3. Process variables are controlled easily.
4.3.7.4 Limitations
1. Initial cost is very high.
2. Safety precautions are more.
3. Machined surface contains metallurgical changes due to excessive heat.
4.3.7.5 Applications
1. The main application of this process is prole cutting on difcult-to-cut
materials.
2. This method is used for plasma arc welding for joining dissimilar metals.
3. This ...