Hardened Id Wear bututu Ar600 Mai jurewar Abrasion
Nickel hard white cast iron wear{0}} bututu mai jurewa
Nickel hard cast iron farin simintin ƙarfe ne mai ɗauke da nickel da chromium, wanda galibi ake kira Ni{0}} Hard a duniya. Dangane da abun ciki na chromium, ana iya raba shi zuwa kashi biyu: w (Cr) 2% da w (Cr) 9%.
A cikin simintin ƙarfe mai ƙarfi na nickel na 2% w (Cr), carbide shine (Fe, Cr) C, tare da taurin 1100 ~ 1150 HV, sama da taurin talakawan carbide Fe, C (900 ~ 1000 HV). A cikin nickel taurin simintin simintin ƙarfe na 9% w (Cr), yawancin carbide shine (Cr, Fe) C3 tare da taurin mafi girma. Figures 8-6 sun nuna ƙarin Cr akan samuwar carbide.
Mafi yawan cunkoson nickel a cikin babban simintin simintin ƙarfe shine don haɓaka ƙarfin simintin ƙarfe, wanda ke taimakawa wajen samun matrix na ƙarfe{0}matrix, amma koyaushe yana tare da ɗimbin ragowar austenite. Yawan abun ciki na nickel ya dogara da kaurin bangon simintin, kuma abun cikin nickel na simintin bango ya kamata ya ɗauki babban iyaka.
(1) Carbon. High carbon simintin ƙarfe baƙin ƙarfe yana da babban taurin, mai kyau lalacewa juriya da surface bambanci, yayin da low carbon ne akasin haka. Dangane da aikace-aikace daban-daban 2) silicon. Abubuwan da ke cikin silicon na Ni-Hard 1 da Ni-Hard 2; babban abun ciki na chromium na Ni-Hard 4 yana daga 1.8%~2.0%. Magani mafi girma yana inganta samuwar (Fe, Cr), C; nau'in carbide, kuma yana ƙara yawan zafin jiki na maline M, yana haifar da sayan matrix martensite, amma babba da ƙarancin silicon quenching.
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(1) Sinadarin sinadarin nickel mai wuyar simintin simintin ƙarfe ya karɓi ma'auni na ƙasa a China (duba Table 8-2). An haɗa Standardungiyar Gwajin Kayayyakin Amurka (ASTM) a cikin Amurka kuma an kasu kashi huɗu A, B, C da D (duba Karin Bayani E2). A cikin Burtaniya, Jamus ma ta karɓi ƙa'idar ƙasa. Kamfanin nickel na kasa da kasa kuma ya jera sinadarai na simintin ƙarfe na nickel mai wuyan ƙarfe (duba Table 8-16).
(3) Chromium. Chromium yana haɓaka samuwar carbide, kuma yana haɓaka haɗin chromium a cikin Ni-Hard 4 tare da carbon da silicon, ta yadda mafi yawan carbide coptectic su zama (Fe, Cr) C3, haɓaka juriyar lalacewa da taurin tasiri.
(4) Nickel. An narkar da nickel galibi a cikin matrix na ƙarfe, wanda zai iya inganta haɓaka yadda ya kamata da haɓaka samuwar martenite ko matrix na gefen. Ƙimar Mi{3}}rana ta 4 yana da girma fiye da na Ni{5}Hard 1, wanda zai iya yin simintin gyare-gyare tare da sashe goma sama da 200mm. Nickel yana inganta graphitization, don haka nickel mai wuyan farin baki mai launin gemu na ƙarfe yana da adadin adadin chromium don guje wa samuwar graphite. Nickel yana daidaita austenite, kuma babban abun ciki na nickel yana samar da ƙarin saura austenite.
(5) Manganese. Manganese na iya daidaita austenite, don haka abun ciki na manganese ya ragu.
(6) Molybdenum. Molybdenum na iya inganta quenability kuma ana iya shafa shi zuwa simintin gyare-gyare idan ya cancanta.
Kamfaninmu yana samar da bututu masu juriya da zafi{0}sawuwa, wanda zai iya keɓance bututu masu jurewa bisa ga bukatun abokin ciniki.
| Abubuwan sinadaran (Rashin juzu'i) na nickel Hard farin simintin ƙarfe daga Inco. | ||||||||
| 牌 号 | C | Si | Mn | S | P | Ni | Cr | M0 |
| Ni -Hard 1 | 3.0-3.6 | 0.3-0.5 | 0.3-0.7 | Kasa da ko daidai da 0.15 | Kasa da ko daidai da 0.30 | 3.3-4.8 | 1.5-2.6 | 0-0.4 |
| Ni -Hard 2 | Kasa da ko daidai da 2.9 | 0.3-0.5 | 0.3 ~0.7 |
Kasa da ko daidai da 0.15 | Kasa da ko daidai da 0.30 | 3.3-5.0 | 1.4-2.4 | 0-0.4 |
| Ni -Hard 3 | 1.0-1.6 | 0.4-0.7 | 0.4-0.7 | Kasa da ko daidai da 0.05 | Kasa da ko daidai da 0.05 | 4.0-4.75 | 1.4-1.8 | |
| Ni -Hard 4 | 2.6-3.2 | 1.8-2.0 | 0.4-0.6 | Kasa da ko daidai da 0.1 | Kasa da ko daidai da 0.06 | 5.0-6.5 | 8.0-9.0 | 0-0.4 |
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