::::: 선박용 엔진 부품/건설장비용 유압실린더 부품제조는 ㈜ 청호산업 :::::


 
작성일 : 15-06-18 16:53
SUS재질 가공조건 참고자료
 글쓴이 : 황경조
조회 : 7,881  
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드릴 작업
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공구는 코발트 드릴
Ø12 기준으로 깊이는 40 드릴이 80Hole정도 가공
Ø8로 드릴로 가공을하고 Ø14 엔드밀로 홀을 가공
 엔드밀 끝을 C작업
Ø8보다 작게.. 드릴 싸이클로 가공한번 해보세요..
Ø8는 S1100~~1300, F110~~F130,  Q0.7~0.9 
 Ø14 2날 정삭 TIN코팅 S750 F80 Q1.5 이정도면 60개 정도는 가공가능
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SUS304 20t판재 Ø3.3hole이 1500개
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공구: 코발트
 날당 이송속도를 0.12이상
S2000 , F220~250 정도

SUS304의 특성중 하나가 가공 경화, 날당 이송이 0.1 이하에서는
 그 영향이 급격해서 공구가 버티질 못하고 EDGE가 주저앉는 현상이
 발생. 그리고 인성이 높은데다 열 전도율이 좋지 않아 발생열이
 전부 공구쪽으로 감.
그러므로 STEP량 조절이 필수.
이송속도를 0.1mm 이상으로 유지. 
공구를 가급적 짧게 물려주어야함.

절삭유를 염화제(불활성형) 불수용성 절삭유, 황화염화제(불활성형)
불수용성 절삭유, 에멀전형 수용성 절삭유등을 사용

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참조 사항
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공구 선정, 절삭 조건이 가장 중요
 초경공구는 별로 좋지 않음. 금방 마모 됨
 드릴은 코발트 드릴을  쓰면 좋은데 미국산 이  일본산(NACH)보다 좋음 
중요한것 한가지 드릴 연삭이 중요함.
그냥 새겄을 그대로 쓰면 100% 날이 깨짐
 적당하게 재연삭 해서 써야 할 것
 앤드밀은 하이스코팅 앤드밀이 무난함
 탭은 관통 홀 이라면 포인트탭(칩이 밑으로 빠지는 탭)이 좋겠고
 기초홀은 보통 스틸보다 0.1~0.2정도 크게 뚫어야함.
절삭속도는 S45C 기준해서 40 ~ 60 % 낮추어 잡으면 될듯 
그리고 가공수량이 많다면 절삭유도 SUS용으로 씀

Teresa 18-05-16 17:49
 
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lee 18-06-12 03:36
 
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