Astm-335 daSa-355mStandarda Digiri na Selika Ferritic Alloy-Karfe bututun don sabis na babban-zafi.
Nasa ne a bakin tukunyar jirgi da lambar jirgin ruwa ta jirgin ruwa.
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Tsarin tsari dole ne ya haɗa da abubuwa 11 masu zuwa:
1. Adadi (ƙafa, mita ko adadin sanduna)
2. Name
3. Matakai (16 a cikin duka: P1, P2, P22, P11, P91, P91)
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5. Yi amfani da ɗaya daga cikin waɗannan bayanai masu zuwa: 1), NPS da kuma kauri da kauri da ƙarancin bangon bango, guda 5), ​​diamita na waje da kuma mafi ƙarancin bangon.
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7. Karshen aiki.
8. Bukatar Zabi (matsin lambar ruwa da kuma ɗaukar nauyi a karkacewa).
9. Rahoton gwajin da ake buƙata (duba A530).
10. Adadin lamba. Abubuwan da ake buƙata 15 ko kowane ƙarin buƙatun zaɓi.
Kayan aiki da masana'antu
1. Bututun karfe mai ban mamaki na iya zama mai zafi ko kuma sanyi-drawn, kuma sun kasance ƙasa da yawan zafin jiki na ƙarshe da aka buƙata da matsayin.
2. P2 da P12 aji. Wadannan maki biyu na karfe biyu ya kamata a samar da amfani da m hatsi yin amfani da tsari. Idan akwai buƙatu na musamman don girman hatsi ko aikin deoxiDation, ya kamata a yarda da siye da mai siye da masana'anta na karfe.
3. Jiyya mai zafi
1. Banda PSC, P23, P91, P92, PSC22 da P911 Darasi na P911 da kuma kawo a cikin cikakken gurnani ko kuma ya saba da ƙasa. Idan aka kawo shi a cikin yanayin da aka saba da zafi, mafi ƙarancin zafin jiki na zafin rana don P5, P5B, P9, P9, P92 da P22 saƙa za su kasance 675 ° C. Mafi karancin zafin jiki na P1, P2, P11, P12 da P15 aji na P15050 ℃
2. Karatun zafi na ƙarshe na P92 da kuma p911 aji ya kamata ya zama daidai da mafi ƙarancin 1040 ℃ da kuma zafin rana 730 ℃.