In this work, a PAM(Plasma Assisted Machining) technology was applied to milling of high manganese steel, a typical hard-to-machine materials. For this purpose, a transferred type of arc plasma torch was coupled with a 3-axis milling machine, then, used to heat and soften the surface of a high manganese steel plate in front of a 16 mm end mill with 2 blades and hard coatings. From the test results, it was concluded that the cutting load can be significantly reduced down to 57 % by plasma heating with the power level of 3.9 kW, ensuring the improvement of tool life and surface roughness in milling of high manganese work pieces.

ABSTRACT
 1. 서 론
 2. 실험 방법
  2.1 실험장치의 구성
  2.2 실험 방법
 3. 실험 결과 및 토론
  3.1 플라즈마에 의한 절삭 부하 저감 효과
 4. 결 론
 References

• 최민규(Dept. of Applied Plasma Eng. Chonbuk National University) | Min-Gyu Choi
• 양인목(Dept. of Applied Plasma Eng. Chonbuk National University) | In-Mok Yang
• 남준석(Dept. of Applied Plasma Eng. Chonbuk National University) | Jun-Seok Nam
• 서준호(Dept. of Applied Plasma Eng. Chonbuk National University) | Jun-Ho Seo Corresponding Author
• 심충도(MTS Korea Co.) | Chung-Do Sim
• 김민호(Dept. of Applied Plasma Eng. Chonbuk National University) | Min-Ho Kim