Seytu Id Id ci 600 nit
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wen bu dëgër bu dëgër mooy wen wu weex gu am nikel ak chromium, ñu koy faral di woowe Ni {-Hard ci àdduna bi. Buñu sukkandikoo ci ëmbiitu kromium, mën nañu ko xaaj ñaari pàcc: w (Cr) 2% ak w (Cr) 9%.
Ci benn wen bu weex bu dëgër bu am 2% w (Cr), carbide bi (Fe, Cr) C, ak dëgëraay bu 1100 ~ 11150 HV, gëna kawe dëgëraay bi ci carbide calme Fe, C (900 ~ 1000 HV). Ci biir nikel bu weex bu dëgër bu 9% w (Cr), carbide yu bari (Cr, Fe) C3 ak dëgëraay bu gëna rëy. Figure yi 8-6 dañuy wane ni Cr bi ñuy yokk ci formation carbide.
Nikel bi gëna bari ci wen wu weex gi am doole mooy gëna mëna wax ci fer bu wen, loolu dafay jàppale ñu am martensite metasite- matrix metal, waaye dafay ànd ak limu bari ci austenite. Bariwaayu nikel bi mingi aju ci dëgëraay bi ci miir bi, ba noppi nikel bi ci biir casting bu dëll bi dafa wara jël àppu bu kawe bi.
(1) Carbon. Miir bu am karbon bu kawe amna dëgëraay bu rëy, wear gu baax ak wuute ci kaw suuf, waaye karbon bu woyof bi dafay gëna yokk. Silicon silicon bu wuute la. Ëmbiit silisium bi Ni{5}}Héer 1 ak Ni{7}}Hard 2; chromium bu bari bi Ni{{-Hard 4 mingi joge ci 1.8% ~2.0%. Doxalin bu gëna kawe dafay jàppale (Fe, Cr), C; Xeetu carbide, ba noppi yokk tàngooru maline M, loolu mooy tax ñu am matrix martensit, waaye ñu laaj ko ci silicon bu bari te bari.
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(1) composition chimique bu wen bu weex bu dëgër bu dëgër, jotna standard national ci Chine (xoolal tablo 8-2). Association de test de cheveux u Amerique (ASTM) dañu ko boole ci Etats Unis, ñu xaaj ko ñeenti xeeti A, B, C ak D (xoolal Annexe E2). Ci Royaume-Uni, Almaañ nangu na itam li réew mi tëral. International Nickel Corporation dafay lim itam composition chimique bu wen wu weex bu dëgër (xoolal tablo 8-16).
(3) Chromium. Chromium dafay gëna yokk formation de carbide, ba noppi gëna baaxal boole chromium ci Ni -Hard 4 ak karbon ak silicon, suko defee ñu gëna bari ci carbide coptetik yi (Fe, C) C3, gëna baaxal weet gi ak jafe-jafe yi
(4) Nickel. Nickel dafay gëna bari ci matrix metal bi, te loolu mën na gëna baaxal quenability bi, ba noppi gëna xëcc matrix martenite wala bu dëgër. Laajte bu Mi- 4 bis bi dafa ëppee bu baax ci Ni -Hard 1, te loolu mën na nekk ci section fukk ak 200mm. Nickel dafay fësal grafitisasioŋ, kon gémmiñu wen wu weex gi am benn fer bu baxa bu baxa amna yenn élément chromium ngir moytu ñu forme graphite. Nickel dafay dakkal astenite bi, te limu nikel bi bari dafay defar austenite bu gëna bari.
(5) Waa Mangane. Manganese mën nañu dakkal astenite, kon limu mangase yi néew.
(6) Molybdenum. Molybdenum mën na yokk truck bi te mën nañu ko jëfandikoo ci kasku yu dëll su ko jaree.
Sunu liggéeyukaay dafay defar tàngoor { 0}}res wearaal- tuyo yi mën nañu ko méngale ak {2}res ci tige kiliyaan yi, lépp di aju ci bëgg-bëggu kiliyaan yi.
| composition chimique (fraction mass) ci Nickel Hard fer bu weex bu bawoo ci Inco. | ||||||||
| 牌 号 | C | Si | Mn | S | P | Naka | Cr | M0 |
| Ni{0}}Héer 1 | 3.0-3.6 | 0.3-0.5 | 0.3-0.7 | Lu néew wala tollu ci 0.15 | Lu néew wala tollu ci 0.30 | 3.3-4.8 | 1.5-2.6 | 0-0.4 |
| Ni{0}}Héer 2 | Lu néew wala mu tollu ci 2.9 | 0.3-0.5 | 0.3 ~0.7 |
Lu néew wala tollu ci 0.15 | Lu néew wala tollu ci 0.30 | 3.3-5.0 | 1.4-2.4 | 0-0.4 |
| Ni{0}}Héer 3 | 1.0-1.6 | 0.4-0.7 | 0.4-0.7 | Lu néew wala tollu ci 0.05 | Lu néew wala tollu ci 0.05 | 4.0-4.75 | 1.4-1.8 | |
| Ni{0}}Héer 4 | 2.6-3.2 | 1.8-2.0 | 0.4-0.6 | Lu néew wala mu tollu ci 0.1 | Lu néew wala tollu ci 0.06 | 5.0-6.5 | 8.0-9.0 | 0-0.4 |
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