Zaɓin kayan aikin kayan aikin ramin ƙasa yana da tasiri ga abubuwa da yawa. Daga mahangar nau'ikan kayan aikin ramin ƙasa:
Kayan aikin hakowa, kayan aikin yin rajista, da kumakayan aikin aiki: Waɗannan kayan aikin suna da ɗan gajeren lokacin aiki, don haka suna buƙatar ƙarfi mai yawa amma suna da ƙarancin buƙatun juriya ga tsatsa.
Kayan aikin kammalawa: Suna buƙatar yin aiki a ƙasa na tsawon shekaru da yawa, don haka dole ne a yi la'akari da zafin ramin da juriyar tsatsa.
Daga mahangar mahalli na ramin ƙasa, yawanci ana rarraba su zuwa rukuni huɗu:
Muhalli na yau da kullun (babu hydrogen sulfide (H₂S), tare da abun ciki na carbon dioxide (CO₂) ƙasa da 1 psi [kimanin 0.0069 MPa]); Muhalli na H₂S; Muhalli na CO₂; Muhalli na haɗakar tsatsa na H₂S da CO₂.
Zaɓin Kayan Aiki don Kayan Aikin Rami a Muhalli na yau da kullun
Ga kayan aikin ramin da ake amfani da su a muhallin da aka saba amfani da su, yawanci ana zaɓar ƙarfen ƙarfe kamar 4130, 4140, da 4145 (maki na AISI). An nuna abubuwan da ke cikin sinadarai da ƙarfin injina na waɗannan kayan a cikin teburi masu zuwa:
1. Kwatanta Abubuwan Sinadarai (Kashi Mai Yawa)
| Sinadarin | 4130 (AISI) | 4140 (AISI) | 4145 (AISI 4145H) |
| Carbon (C) | 0.28-0.33% | 0.33-0.48% | 0.43-0.48% |
| Manganese (Mn) | 0.40-0.60% | 0.75-1.00% | 0.75-1.00% |
| Chromium (Cr) | 0.80-1.10% | 0.80-1.10% | 0.80-1.10% |
| Molybdenum (Mo) | 0.15-0.25% | 0.15-0.25% | 0.15-0.25% |
| Silikon (Si) | 0.15-0.35% | 0.15-0.35% | 0.15-0.35% |
| Sulfur (S)/Fosforus (P) | ≤0.040% (S), ≤0.035% (P) | ≤0.030% (S), ≤0.030% (P) | ≤0.030% (S), ≤0.030% (P) |
2. Kwatanta Ƙarfin Inji
| Kadarar Inji | 4130 | 4140 | 4145 (Matsayi na H, Darajar da Aka Saba) |
| Ƙarfin Taurin Kai | 760-871 MPa | 795-1000 MPa | 950-1100 MPa |
| Ƙarfin Ba da Kyauta | ≥635 MPa | ≥610-750 MPa | ≥750 MPa |
| Ƙarawa | ≥17% | ≥22% | ≥10% |
| Taurin kai (HRC) | 28-32 (bayan an kashe kuma an yi amfani da shi wajen dumama jiki) | 28-34 (bayan an kashe kuma an yi amfani da shi wajen dumama jiki) | 32-36 (bayan an kashe kuma an yi amfani da shi wajen dumama jiki) |
Kamar yadda za a iya gani daga tebura:
Yawan sinadarin carbon da ke cikin waɗannan kayan yana ƙaruwa a jere (4130 < 4140 < 4145), yayin da abubuwan da ke cikin sauran abubuwan suke kama da juna.
Sifofin Inji: Ƙarfi yana da alaƙa mai kyau da yawan sinadarin carbon—4145 yana da mafi girman ƙarfi—yayin da tauri ke raguwa a juye, yayin da 4130 ke da mafi girman ƙarfi.
4130, 4140, da 4145 maki ne na kayan duniya, kuma makamancinsu na cikin gida a China sune kamar haka:
- 4130 (AISI) ≡ Matsayin gida na 30CrMoA;
- 4140 (AISI) ≡ Matsayin gida na 42CrMo;
- 4145H (AISI) ≡ Matsayin gida na 45CrMo.
4130 da 4140 sun dace da kayan aikin kammalawa na gargajiya, tare da mai da hankali kan inganci da sauƙin walda.
Sau da yawa ana amfani da 4145H a cikin kayan aikin rijiyoyi masu zurfi, masu matsin lamba mai yawa, ko masu ɗaukar nauyi mai yawa (kamar kayan aikin haƙa da kayan aikin aiki), tare da fifiko ga ƙarfi da juriyar lalacewa.
Zaɓin Kayan Aiki don Kayan Aiki na Kammalawa a Muhalli Masu Lalacewa
Don kayan aikin kammalawa a cikin muhallin da ke lalata iskar gas, zaɓin ya dogara ne akan matsin lamba na iskar gas mai guba (an raba shi zuwa nau'i biyu: CO₂ da H₂S).
1. Rijiyoyi masu yawan sinadarin CO₂
Domin hana tsatsa CO₂, ana buƙatar ƙara yawan sinadarin chromium (Cr) a cikin kayan. Waɗannan kayan (an tsara su bisa ga adadin Cr) za su iya rufe rijiyoyin da matsin lamba na CO₂ daga 0.5 MPa zuwa 14 MPa.:3Cr (Cr abun ciki ≈ 3%), 9Cr1Mo (Cr abun ciki ≈ 9%), 13Cr, S13Cr, 17Cr (sashi na S17400), 22Cr (misali, ƙarfe mai duplex S32205), da ƙarfe 25Cr.
2. Rijiyoyi masu yawan H₂S
Domin rage tsatsagewar sulfide stress cracking (SSC), akwai buƙatar ƙara yawan sinadarin nickel (Ni) a cikin kayan. Idan matsin lamba na H₂S ya fi 1 MPa girma kuma matsin lamba na CO₂ shi ma yana da yawa, ya kamata a yi amfani da ƙarfe masu zafi kamar waɗannan:
Zaɓin Kayan Aiki don Abubuwan Musamman
Manyan kayan aikin ramin ƙasa (wanda ya shafi ruwan rijiya da kayan ɗaukar kaya): An zaɓa bisa ga ƙa'idodin da ke sama.
Abubuwan da ake yankewa: Galibi ana yin su ne da sandunan ƙarfe na H62 ko S36600.
Abubuwan da ke ɗaurewa: An zaɓa daga 20CrMoTi ko 20CrMnTi. Don inganta taurin saman, ana buƙatar maganin carburizing na saman (tare da kauri mai kauri na 0.8-1.2 mm), wanda ke ƙara taurin saman zuwa HRC 58-62.
Sauran Abubuwan da ke Shafar Zaɓin Kayan Aiki da Ka'idojin Nazari
Baya ga iskar gas mai guba, zaɓin kayan da za a yi amfani da su wajen yin amfani da bututun mai da kayan aikin da za a yi amfani da su wajen yin amfani da bututun mai da kuma amfani da su wajen yin amfani da bututun mai yana da alaƙa da zafin ramin, yanke ruwa, matakin ma'adinai, da kuma ƙimar pH. Don ƙarin takamaiman sharuɗɗan zaɓi, duba ƙa'idar ƙira ta Q/HS 14015 ta masana'antu don hana tsatsa da bututu da kuma yin amfani da bututu a cikin rijiyoyin mai da iskar gas na ƙasashen waje.
Landrill kuma yana samar da sandar ƙarfe 41430,4140,4145.
Jin daɗin yin tambaya.https://www.landrilloiltools.com/
Lokacin Saƙo: Satumba-03-2025
5-1203, Yankin Masana'antu na Dahua, Lamba ta 2 Titin Yunshui, Yankin ci gaban fasaha mai zurfi, Xi'an, 710065, China
86-13609153141
