Sinadarin sinadarai

Gr.3: Yawan sinadarin carbon ≤0.19%, yawan sinadarin silicon 0.18%-0.37%, yawan sinadarin manganese 0.31%-0.64%, yawan sinadarin phosphorus da sulfur ≤0.025%, kuma yana dauke da sinadarin nickel 3.18%-3.82%.

Gr.6: Yawan sinadarin carbon ≤0.30%, yawan sinadarin silicon ≥0.10%, yawan sinadarin manganese 0.29%-1.06%, yawan sinadarin phosphorus da sulfur Duk ≤0.025%.

Kayayyakin injina

Gr.3: ƙarfin tensile ≥450MPa, ƙarfin yawan amfanin ƙasa ≥240MPa, tsayin ≥30% a tsayi, ≥20% a juye, ƙarancin tasirin zafin gwajin shine -150°F (-100°C).

Gr.6: ƙarfin tensile ≥415MPa, ƙarfin yawan amfanin ƙasa ≥240MPa, tsayin ≥30% a tsayi, ≥16.5% a juye, ƙarancin tasirin gwajin zafin jiki shine -50°F (-45°C).

Tsarin samarwa

Narkewa: Yi amfani da tanda mai amfani da wutar lantarki ko na'urar canza wutar lantarki da sauran kayan aiki don cire iskar oxygen, cire tarkace da kuma haɗa ƙarfen da aka narke don samun ƙarfe mai narkewa mai tsabta.

Mirgina: A zuba ƙarfe mai narkewa a cikin injin niƙa mai birgima na bututun don yin birgima, a hankali a rage diamita na bututun sannan a sami kauri da ake buƙata a bango, sannan a lokaci guda a sassauta saman bututun ƙarfen.

Sarrafa Sanyi: Ta hanyar sarrafa sanyi kamar zane mai sanyi ko birgima a cikin sanyi, ana iya ƙara inganta daidaito da ingancin saman bututun ƙarfe.

Maganin zafi: Gabaɗaya, ana isar da shi a yanayin daidaitawa ko daidaitawa da kuma daidaita yanayin zafi don kawar da damuwa da ke cikin bututun ƙarfe da kuma inganta cikakken aikinsa.

Filin aikace-aikace

Man Fetur: Ana amfani da shi wajen kera bututun mai mai matsin lamba mai ƙarancin zafi da bututun mai musayar zafi mai ƙarancin zafi a fannoni na man fetur, masana'antar sinadarai, da sauransu, waɗanda za su iya biyan buƙatun amfani a cikin yanayin zafi mai ƙarancin zafi, kamar iskar gas mai ruwa-ruwa Tankunan ajiyar iskar gas na halitta, bututun mai watsawa mai ƙarancin zafi, da sauransu.

Iskar gas: Ya dace da bututun watsa iskar gas na halitta da tankunan ajiyar iskar gas da sauran kayan aiki don tabbatar da aiki lafiya a cikin yanayin zafi mai ƙarancin zafi.

Sauran fannoni: Ana kuma amfani da shi a fannin wutar lantarki, sararin samaniya, da kuma gina jiragen ruwa, kamar manyan kayan gini na na'urorin dumama ruwa, tukunyar ruwa da sauran kayan aiki a cikin kayan aikin wutar lantarki, da kuma manyan kayan gini na tsarin hydraulic, tsarin mai da sauran kayan aiki a fannin sararin samaniya.

Bayani dalla-dalla da girma

Bayani dalla-dalla da girma dabam-dabam suna da faɗi, kamar diamita na waje 21.3-711mm, kauri bango 2-120mm, da sauransu.
Bututun ƙarfe mara sulɓi na Gr.6, musamman ASTM A333/A333M GR.6 ko SA-333/SA333M GR.6Bututun ƙarfe mara ƙarfi, muhimmin abu ne na masana'antu, wanda ake amfani da shi sosai a lokuta daban-daban yana buƙatar tauri mai ƙarancin zafi da ƙarfi mai yawa. Ga cikakken bayani game da bututun ƙarfe mara ƙarfi na Gr.6:

1. Ma'aunin aiwatarwa da kayan aiki

Ka'idojin aiwatarwa: Bututun ƙarfe mara shinge na Gr.6 yana aiwatar da ka'idojin ASTM A333/A333M ko ASME SA-333/SA333M, waɗanda ƙungiyar gwaji da kayan aiki ta Amurka (ASTM) da ƙungiyar injiniyoyin injiniyoyi ta Amurka (ASME) suka bayar kuma ana amfani da su musamman don ƙayyade buƙatun fasaha na bututun ƙarfe mara shinge da bututun ƙarfe mai walda don ƙarancin zafin jiki.

Kayan Aiki: Bututun ƙarfe mara shinge na Gr.6 bututu ne na ƙarfe mai ƙarancin zafin jiki wanda ba shi da nickel, wanda ke amfani da ƙarfe mai laushi mai laushi wanda aka cire shi daga aluminum, wanda kuma aka sani da ƙarfe da aka kashe daga aluminum. Tsarin ƙarfensa yana da siffar cubic ferrite mai tsayin jiki.

2. Sinadaran sinadarai

Sinadarin sinadarai na bututun ƙarfe mara sumul na Gr.6 ya haɗa da:

Carbon (C): Abubuwan da ke cikinsa ba su wuce kashi 0.30% ba, wanda ke taimakawa wajen rage karyewar ƙarfe.

Manganese (Mn): Abubuwan da ke cikinsa suna tsakanin 0.29% da 1.06%, wanda zai iya inganta ƙarfi da tauri na ƙarfe.

Silicon (Si): Abubuwan da ke cikinsa suna tsakanin 0.10% zuwa 0.37%, wanda ke taimakawa wajen cire iskar oxygen daga ƙarfe kuma yana iya ƙara ƙarfin ƙarfe zuwa wani mataki.

Phosphorus (P) da sulfur (S): A matsayin abubuwan da ba su da tsafta, abubuwan da ke cikinsu suna da iyaka sosai, gabaɗaya ba za su wuce 0.025% ba, saboda yawan sinadarin phosphorus da sulfur zai rage tauri da sauƙin haɗa ƙarfe.

Sauran abubuwan da ke haɗa ƙarfe: kamar su chromium (Cr), nickel (Ni), molybdenum (Mo), da sauransu, ana kuma sarrafa abubuwan da ke cikinsu a matakin ƙasa don tabbatar da aikin ƙarancin zafin jiki da cikakken aikin ƙarfe.

3. Kayayyakin injiniya

Gr.6 bututun ƙarfe mara sumul yana da kyawawan kaddarorin injiniya, galibi sun haɗa da:

Ƙarfin tauri: Gabaɗaya yana tsakanin 415 zuwa 655 MPa, wanda ke tabbatar da cewa bututun ƙarfe zai iya kiyaye daidaiton tsarin da kuma hana fashewa lokacin da ake fuskantar matsin lamba.

Ƙarfin samarwa: Mafi ƙarancin ƙimar shine kusan 240 MPa (kuma yana iya kaiwa sama da 200 MPa), don haka ba zai haifar da nakasa mai yawa ba a ƙarƙashin wasu ƙarfin waje.

Tsawaitawa: ba kasa da kashi 30% ba, wanda ke nufin cewa bututun ƙarfe yana da kyakkyawan ikon lalata filastik kuma yana iya haifar da wani lahani ba tare da ya karye ba lokacin da ƙarfin waje ya miƙe. Wannan yana da mahimmanci musamman don amfani a yanayin zafi mai ƙarancin zafi, saboda ƙarancin zafin jiki na iya sa kayan ya yi rauni, kuma kyakkyawan filastik na iya rage haɗarin irin wannan lalacewa.

Taurin Tasiri: A takamaiman yanayin zafi (kamar -45°C), kuzarin tasirin dole ne ya cika wasu buƙatun lambobi ta hanyar tabbatar da gwajin tasirin Charpy don tabbatar da cewa bututun ƙarfe ba zai karye ba a ƙarƙashin tasirin ƙarancin zafin jiki.