JIS G 3444: Bututun ƙarfe na carbon don tsarin gabaɗaya.
Ya ƙayyade buƙatun bututun ƙarfe na carbon da ake amfani da su a injiniyan gine-gine da gine-gine, kamar hasumiyoyin ƙarfe, shimfidar gini, tudun tushe, tudun tushe, da tudun hana zamewa.
STK 400bututun ƙarfe yana ɗaya daga cikin mafi yawan maki, tare da halayen injiniya namafi ƙarancin ƙarfin tensile na 400 MPakuma amafi ƙarancin ƙarfin yawan amfanin ƙasa na 235 MPa. Kyakkyawan ƙarfin tsarinsa da juriyarsasanya shi ya dace da aikace-aikace daban-daban.
Dangane da mafi ƙarancin ƙarfin tensile na bututun ƙarfe, an raba shi zuwa azuzuwan 5, waɗanda sune:
STK 290, STK 400, STK 490, STK 500, STK 540.
Babban manufa Diamita na waje: 21.7-1016.0mm;
Tushen tushe da tururuwa don rage zaftarewar ƙasa OD: ƙasa da 318.5mm.
| Alamar daraja | Alamar tsarin ƙera | |
| Tsarin kera bututu | Hanyar kammalawa | |
| STK 290 | Mara sumul: S Juriyar wutar lantarki: E Butt ɗin da aka haɗa: B Arc mai haɗa kai ta atomatik: A | An gama da kyau: H An gama sanyi: C Kamar yadda juriyar lantarki ta welded: G |
| STK 400 | ||
| STK 490 | ||
| STK 500 | ||
| STK 540 | ||
Za a ƙera bututun ta hanyar haɗa hanyar ƙera bututun da kuma hanyar kammalawa da aka nuna.
Musamman, ana iya rarraba su zuwa nau'ikan guda bakwai masu zuwa, don haka zaɓi nau'in da ya dace bisa ga buƙatu daban-daban:
1) Bututun ƙarfe mara sumul mai zafi: -SH
2) Bututun ƙarfe mara shinge wanda aka gama da sanyi: -SC
3) A matsayin bututun ƙarfe mai juriya ga lantarki: -EG
4) Bututun ƙarfe mai juriya ga lantarki mai zafi da aka ƙera da welded: -EH
5) Bututun ƙarfe mai jure wa lantarki mai sanyi wanda aka ƙera da welded: -EC
6) Bututun ƙarfe masu welda da aka haɗa da butt: -B
7) Bututun ƙarfe masu walda ta atomatik: -A
| Sinadarin Sinadaraia% | |||||
| Alamar daraja | C (Carbon) | Si (Silikon) | Mn (Manganese) | P (Fosphorus) | S (Silfur) |
| matsakaicin | matsakaicin | matsakaicin | matsakaicin | ||
| STK 400 | 0.25 | — | — | 0.040 | 0.040 |
| aAna iya ƙara abubuwan ƙarfe waɗanda ba a haɗa su a cikin wannan tebur da abubuwan da aka nuna da "—" idan ya cancanta. | |||||
STK 400ƙarfe ne mai ƙarancin carbon wanda ke da kyakkyawan sauƙin walda da kuma iya aiki don aikace-aikacen tsari waɗanda ke buƙatar walda. Ana sarrafa phosphorus da sulfur a ƙananan matakai don taimakawa wajen kiyaye ƙarfin kayan gaba ɗaya da kuma iya aiki. Kodayake ba a ba da takamaiman ƙima ga silicon da manganese ba, ana iya daidaita su cikin iyakokin da aka yarda don inganta halayen ƙarfen.
Ƙarfin Tashin Hankali da Matsayin Yawa ko Matsi Mai Tabbatarwa
Ƙarfin juriya na walda yana aiki ne ga bututun walda na atomatik. Wannan shine tsarin walda na SAW.
| Alamar daraja | Ƙarfin tauri | Ma'aunin bayarwa ko damuwa mai tabbatar da inganci | Ƙarfin tensile a cikin walda |
| N/mm² (MPA) | N/mm² (MPA) | N/mm² (MPA) | |
| minti | minti | minti | |
| STK 400 | 400 | 235 | 400 |
Ƙara girman JIS G 3444
An nuna tsawon da ya dace da hanyar ƙera bututun a cikin Jadawali na 4.
Duk da haka, lokacin da aka yi gwajin tensile akan Gwaji Mai Lamba 12 ko Gwaji Mai Lamba 5 da aka ɗauka daga bututun da kaurinsa bai wuce mm 8 ba, tsawaitar zai yi daidai da Jadawali na 5.
A zafin ɗaki (5 °C zuwa 35 °C), sanya samfurin a tsakanin faranti biyu masu faɗi sannan a danna shi da ƙarfi don ya daidaita su har sai tazarar H ≤ 2/3D tsakanin faranti, sannan a duba ko akwai tsagewa a cikin samfurin.
A zafin ɗaki (5 °C zuwa 35 °C), lanƙwasa samfurin a kusa da silinda a kusurwar lanƙwasa mafi ƙarancin 90 ° da kuma matsakaicin radius na ciki wanda bai wuce 6D ba sannan a duba samfurin don ganin akwai tsagewa.
Za a amince da gwaje-gwajen hydrostatic, gwaje-gwajen walda marasa lalata, ko wasu gwaje-gwaje a gaba kan buƙatun da suka dace.
Juriyar Diamita ta Waje
Juriyar Kauri a Bango
Juriyar Tsawon Lokaci
Tsawon ≥ tsayin da aka ƙayyade
Zafin ciki da na waje na bututun ƙarfe ya kamata su kasance masu santsi kuma ba su da lahani ga na'urorin lantarki.
Kowace bututun ƙarfe za a yi mata lakabi da waɗannan bayanai.
a)Alamar daraja.
b)Alamar hanyar ƙera.
c)Girma.Za a yi wa diamita na waje da kauri na bango alama.
d)Sunan masana'anta ko taƙaitacciyar magana.
Idan alamar da ke kan bututun ta yi wahala saboda girman wajenta ƙarami ne ko kuma idan mai siye ya buƙata, ana iya ba da alamar a kan kowace fakitin bututu ta hanyar da ta dace.
Ana iya shafa fenti mai hana tsatsa kamar fenti mai cike da zinc, fenti mai ɗauke da epoxy, fenti mai ɗauke da fenti, da sauransu a saman waje ko na ciki.
STK 400 yana ba da daidaito mai kyau na ƙarfi da tattalin arziki, wanda hakan ya sa ya dace da ayyukan injiniya da gine-gine da yawa.
Ana amfani da bututun ƙarfe na STK 400 a masana'antar gini kuma sun dace musamman don amfani da su azaman abubuwan gini kamar ginshiƙai, katako, ko firam a cikin gine-ginen kasuwanci da na zama.
Haka kuma ya dace da gadoji, tsarin tallafi, da sauran ayyukan da ke buƙatar matsakaicin ƙarfi da dorewa.
Ana iya amfani da shi wajen gina shingen hanya, firam ɗin alamun zirga-zirga, da sauran wuraren jama'a.
A fannin kera motoci, ana iya amfani da STK 400 don samar da firam da tsarin tallafi ga injina da kayan aiki saboda kyawun ƙarfin ɗaukar kaya da kuma iya aiki.
GB/T 3091: Q235B;
ASTM A500: Daraja A,Aji na B, kumaDarasi na C;
EN 10219: S235;
BS 4360: Daraja ta 43A;
Lura cewa duk da cewa waɗannan ƙa'idodi iri ɗaya ne a aikace-aikace da aiki, akwai iya samun ƙananan bambance-bambance a cikin takamaiman abubuwan da ke cikin sinadarai da wasu sigogin halayen injiniya.
Lokacin maye gurbin kayan aiki, ya kamata a kwatanta takamaiman buƙatun ƙa'idodin dalla-dalla don tabbatar da cewa kayan da aka zaɓa za su cika takamaiman ƙa'idodin fasaha da aminci na aikin.
Tun lokacin da aka kafa kamfanin Botop Steel a shekarar 2014, ya zama babban kamfanin samar da bututun ƙarfe na carbon a Arewacin China, wanda aka san shi da kyakkyawan sabis, kayayyaki masu inganci, da kuma cikakkun hanyoyin magance matsaloli.
Kamfanin yana bayar da nau'ikan bututun ƙarfe na carbon da kayayyaki masu alaƙa, gami da bututun ƙarfe marasa sumul, ERW, LSAW, da SSAW, da kuma cikakken jerin kayan haɗin bututu da flanges.
Kayayyakinta na musamman sun haɗa da ƙarfe masu inganci da ƙarfe masu bakin ƙarfe na austenitic, waɗanda aka ƙera don biyan buƙatun ayyukan bututu daban-daban.
