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Re: 장신구, 벨트, 지퍼 알레르기 원인은? 주로 니켈 알레르기.. 2024.06.21해당카페글 미리보기
planet iron-nickel alloy molten outer core, 10% of which is represented by nickel and that lies above Earth solid inner core and below the mantel. In nature, nickel is found in combination with antimony, arsenic, and sulfur; elemental...
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주요 금속재료 2023.05.12해당카페글 미리보기
Cast Iron)(사용 예: GC20, GC25등) l 구상 흑연 주철 - 주철의 흑연 형상을 구상(球狀)으로 하고 강도를 증가시켰음.( Ductile Iron) l 탄소강 주철 - 0.15~0.5%의 탄소를 포함한 강을 용해하여 주형(鑄型)에 넣어 형상을 성형한 것으로 주철에 비해...
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API STD 594Check Valves 2023.04.03해당카페글 미리보기
valves are short face-to-face, and can be wafer, lug, or double- flanged; single-plate or dual-plate; or gray iron, ductile iron, steel, nickel alloy, or other alloy designed for installation between Classes 125 and 250 cast-iron flanges...
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TOEFL 단어모음-ETS ( C-D ) 2023.04.01해당카페글 미리보기
heated iron. cede v. To pass title to. censor n. An official examiner of manuscripts empowered to prohibit their publication. censorious adj. Judging severely or harshly. census n. An official numbering of the people of a country or...
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aaaaa 2022.09.08해당카페글 미리보기
Gamma iron 30.Impact tougness is measured in units of:Energy 31.steels appiled for large structural constructions:small amount of 32.the increase of the amount of pearlite in a steel would results in:increasing of tensile strength 33...
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용해와 용탕처리 2022.05.20해당카페글 미리보기
경우 용탕을 주형에 주입하기 전에 Si, Fe-Si, Ca-Si 등을 첨가하여, 재질을 개선함 - 구상화 처리 : 구상흑연주철(Ductile Cast Iron)을 얻기 위해 사용되는 첨가금속으로는 Mg, Mg계 합금, Ca계 합금, 희토류 합금 등이 실용화되고 있음 - 개량처리...
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Valve Materials-예시 2020.10.12해당카페글 미리보기
C3771) K metal (C3531) Bronze Brass Cast iron Gray cast iron (FC200,FC300) Stainless steel Brass Gray cast iron Ductile iron Ductile iron castings (FCD-S) Stainless steel Stainless steel Cast steel Carbon steel castings for high...
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Valve Castings 2020.05.25해당카페글 미리보기
Iron: HT200, HT250, HT300, HT350,GG15, GG20, GG30, FC200, FC250, FC300, ASTM A48 CLASS NO.20,NO.25,NO.30, NO.35. Ductile Iron: QT400-18, QT500-7, QT600-3,GGG40, GGG50,GGG60, FCD450-70, FCD400-15, FCD500-7, FCD600-3, ASTM A536 ( 60-40-18...
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Differences between Cast Iron and Cast Steel 2019.12.24해당카페글 미리보기
due to their excellent mechanical properties for a wide range of applications. CAST IRON usually refers to gray iron, ductile iron and malleable iron. Which is an iron casting with carbon content higher than 2%. CAST STEEL usually refers...
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Valve Standards 2019.12.24해당카페글 미리보기
for plug valves that are in full conformance to the requirements of ASME B16.34 for Standard Class 150 through 2500. Ductile iron valves, Class 150 and 300, shall follow the additional requirements of ASME B16.42 for pressure-temperature...