[현미경 표준조직]탄소강 주철
- 최초 등록일
- 2007.07.01
- 최종 저작일
- 2007.06
- 36페이지/ MS 파워포인트
- 가격 1,000원
소개글
탄소강 주철의 현미경 표준조직 사진 및 설명입니다.
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[현미경 표준 조직] 탄소강 주철
Ferrite
MagnificationX100
Etching reagent3% Nital(Approx.12s)
CompositionC 0.02%,Si 0.24%,Mn 0.22%,P 0.005%,S0.017%
Heat treatment950℃X1hAir cool(Normalizing)
Hardness40 to 70 HB
Tensile strength216 to 314 N/・(22 to 32 ・f/・)
Elongation40 to 50 %
Pearlite and Ferrite
Magnification×500
Etching reagent3% Nital(Approx.10s)
CompositionC 0.46%,Si 0.24%,Mn 0.69%,P 0.020%,S 0.022%
Heat treatment930℃Xl hAir cool(Normalizing)
Hardness150 to 200 HB
Tensile strengthApprox. 588N/・(60・f/・)
ElongationApprox. 22%
Pearlite
Magnification×500
Etching reagent3% Nital(Approx. 8s)
CompositionC 0.88%,Si 0.28%,Mn 0.36%,P 0.020%,S 0.013%
Heat treatment900℃X5hFurnace cool(Anneaing)
Hardness180 to 200 HB
etwork Cementite
Magnification×200
Etching reagent3% Nitric acid-Alcohol solution(Approx. 10s)
CompositionC 1.16%,Si0.24%,Mn 0.46%,P 0.013%,S 0.017%
Heat treatment950℃×2h Furnace cool(Anneaing)
Hardness220 to 250 HB
Globular Cementite
Magnification×200
Etching reagent3% Nital(Approx. 8s)
CompositionC 1.16%,Si 0.24%,Mn 0.46%,P 0.013%,S 0.017%
Heat treatmentAfter heating at 760℃×3h, cool down to 720℃ in furnace,and keep at 720℃×4h, then cool down to room temperature in furnace
Hardness160 to 210 HB
Tensile strength588 to 735N/・(60 to 75・f/・)
참고 자료
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