1. 2007013374 하태홍

2. Process

3. 1 - Metal round bar ( 환봉 )  Buy

4. 2 - Forging ( 금형단조 )  http://www.youtube.com/watch?v=OkrjnKHn4M0 http://www.youtube.com/watch?v=OkrjnKHn4M0

5. 4 - Tempering ( 열처리 )  to make gears stronger 5 - turning ( 선삭 )

6. 6 - Milling ( 밀링 )

7. 7 - Hobbing ( 호빙 )  To make gear tooth  http://www.youtube.com/watch?v=Y- 52GTD2kF8&feature=related http://www.youtube.com/watch?v=Y- 52GTD2kF8&feature=related

8. 8 - Deburring ( 디버링 )

9. 9 - Chamferring ( 모따기 )

10. 10 - Shaving ( 면도 )

11. 11 - Broaching  http://www.youtube.com/watch?v=zZpWcl1BKVk http://www.youtube.com/watch?v=zZpWcl1BKVk

12. 11 - Carburizing inserting carbon ( C ) 12 - Induction Hardening 13 - Nitriding inserting nitrogen ( N ) 14 - Tempering

13. 15 - Grinding ( 연삭 )  http://www.youtube.com/watch?v=swSM-BYchrk http://www.youtube.com/watch?v=swSM-BYchrk

14. Process

15. Thank you