Bututun ASTM A334 bututun ƙarfe ne na carbon da alloy waɗanda aka ƙera don aikace-aikacen ƙananan zafin jiki kuma an ƙera su ta amfani da hanyoyin walda marasa matsala.
Wasu girman samfura ba za su iya samuwa a ƙarƙashin wannan ƙayyadaddun bayanai ba saboda kauri mai nauyi na bango yana da mummunan tasiri akan halayen tasirin ƙarancin zafin jiki.
Rarraba Maki
ASTM A334 ya ƙunshi maki da yawa don yanayin zafi daban-daban.
Aji na 1, Aji na 3, Aji na 6, Aji na 7, Aji na 8, Aji na 9, da Aji na 11.
Maki masu dacewa donBututun ƙarfe na ƙarfe masu ƙarfe sune na aji 3, aji 7, aji 8, aji 9, da aji 11.
Kowane nau'in ƙarfe yana da takamaiman abubuwan da ke cikin sinadarai da buƙatun kadarorin injiniya, da kuma ƙa'idodin zafin jiki na gwaji mafi ƙarancin tasiri waɗanda dole ne a cika su.
Tsarin Masana'antu
Za a yi bututun ta hanyar amfani dababu matsalako atomatiktsarin waldaba tare da ƙara ƙarfe mai cikawa ba a aikin walda.
Maganin Zafi
Aji na 1, 3, 6, 7, da 9
Daidaita ta hanyar dumama zuwa yanayin zafi iri ɗaya wanda bai gaza 1550 °F [845 °C] ba sannan a sanyaya a iska ko a cikin ɗakin sanyaya tanderu mai sarrafa yanayi.
Idan ana buƙatar yin gyaran fuska, dole ne a yi shawarwari.
Ga matakan da ke sama na bututun ƙarfe marasa sumul kawai:
Sake dumama da kuma sarrafa zafin aikin zafi da zafin aikin kammalawa mai zafi zuwa yanayin zafin gamawa daga 1550 - 1750 °F [845 - 955 °C] sannan a sanyaya a cikin tanderun da aka sarrafa daga zafin farko na bai gaza 1550 °F [845 °C] ba.
Aji na 8
Zaɓi ɗaya daga cikin hanyoyin da ke ƙasa don maganin zafi.
An kashe kuma an hura wuta;
Sau biyu Mai Daidaitawa da Tsanani.
Aji na 11
Ko za a yi amfani da bututun Grade 11 ko a yi amfani da su, ya danganta ne da yarjejeniya tsakanin mai siye da mai samar da kayayyaki.
Idan aka yi amfani da bututun aji 11, za a daidaita su a yanayin zafi tsakanin 1400 - 1600℉[760 - 870°C].
Tsarin Sinadaran ASTM A334
Ga ƙarfe na aji 1 ko na aji 6, ba a yarda a samar da matakan haɗa ƙarfe ga duk wani abu banda waɗanda ake buƙata a fili ba. Duk da haka, an yarda a ƙara abubuwan da ake buƙata don cire iskar gas daga ƙarfen.
Gwaje-gwajen Injin ASTM A334
Bukatun mallakar injina ba su shafi bututun da ya fi ƙasa da inci 1/8 [3.2 mm] a diamita na waje kuma tare da kauri na bango ƙasa da inci 0.015 [0.4 mm].
1. Kadarar Tashin Hankali
An ƙididdige mafi ƙarancin tsawo ga kowace raguwar kauri na inci 1/32 [0.80 mm] na kauri na bango:
Ga bututun da ba su wuce inci 1/2 [12.7 mm] a diamita na waje ba, ƙimar tsawaitawa da aka bayar ga samfuran tsiri za a yi amfani da su.
2. Gwaje-gwajen Tasiri
Zaɓi yanayin zafi da ƙarfin tasirin da ya dace dangane da matsayi da kauri na bango.
Ƙarfin Tasiri
Zafin Tasiri
| Matsayi | Zafin Gwajin Tasiri | |
| ℉ | ℃ | |
| Aji na 1 | -50 | -45 |
| Aji na 3 | -150 | -100 |
| Aji na 6 | -50 | -45 |
| Aji na 7 | -100 | -75 |
| Aji na 8 | -320 | -195 |
| Aji na 9 | -100 | -75 |
3. Gwajin Tauri
| Matsayi | Rockwell | Brinell |
| Aji na 1 | B 85 | 163 |
| Aji na 3 | B 90 | 190 |
| Aji na 6 | B 90 | 190 |
| Aji na 7 | B 90 | 190 |
| Aji na 8 | — | — |
| Aji na 11 | B 90 | 190 |
4. Gwajin Faɗi
Za a yi gwajin lanƙwasa ɗaya a kan samfuran da aka samo daga kowane ƙarshen bututu ɗaya da aka gama a kowane yanki amma ba wanda aka yi amfani da shi don gwajin lanƙwasa ko lanƙwasa ba.
5. Gwajin Wuta (Bututun Ruwa Mara Sumul)
Za a yi gwajin walƙiya ɗaya a kan samfurori daga kowane ƙarshen bututu ɗaya da aka gama na kowane yanki, amma ba wanda aka yi amfani da shi don gwajin shimfidawa ba.
6. Gwajin Flange (Bututun Walda)
Za a yi gwajin flange ɗaya a kan samfuran da aka samo daga kowane ƙarshen bututun da aka gama na kowane yanki, amma ba wanda aka yi amfani da shi don gwajin lanƙwasa ba.
7. Gwajin Faɗin Juyawa
Ga bututun da aka haɗa, za a yi gwajin lanƙwasawa ɗaya a kan samfurin da aka yi daga kowace ƙafa 1500 [mita 460] na bututun da aka gama.
Gwajin Wutar Lantarki Mai Tsabtace Ruwa ko Wanda Ba Ya Halakarwa
Kowace bututu za a gwada ta hanyar lantarki ba tare da lalata ta ba ko kuma a gwada ta da ruwa bisa ga ƙa'idar A1016/A1016M.
Aikace-aikace na ASTM A334 Karfe bututu
Ana amfani da shi ne musamman don jigilar ruwa ko iskar gas kamar iskar gas, mai, da sauran sinadarai a yanayin zafi mai ƙarancin zafi.
1. Tsarin bututun mai mai guba: wanda aka saba amfani da shi wajen gina tsarin bututu don jigilar ruwa mai narkewa (misali iskar gas mai narkewa, ruwa mai nitrojiniya). Saboda kyawawan halayensa na cryogenic, yana iya kiyaye ƙarfin injina da tauri a yanayin zafi mai ƙarancin zafi.
2. Masu musayar zafi da masu sanyaya daki: Ana iya amfani da na'urorin musanya zafi da na'urorin sanyaya zafi yadda ya kamata don sanyaya ko dumama hanyoyin sarrafa zafi, musamman a masana'antar sinadarai da na fetur.
3. Tasoshin matsi: ana iya amfani da shi wajen ƙera tasoshin matsin lamba waɗanda aka tsara don ayyukan cryogenic. Ana iya amfani da waɗannan tasoshin don adana sinadarai masu cryogenic ko don ayyukan masana'antu na musamman.
4. Tsarin sanyaya da kayan aiki: Ana amfani da waɗannan bututun don jigilar na'urorin sanyaya daki, musamman inda ake buƙatar kayan da ba su da juriya ga yanayin zafi.
Daidaitaccen ASTM A334
EN 10216-4: Yana rufe bututun ƙarfe marasa ƙarfe da na ƙarfe, waɗanda ke da takamaiman halaye masu ƙarancin zafin jiki.
JIS G 3460: yana da alaƙa da bututun ƙarfe na ƙarfe don sabis na cryogenic.
GB/T 18984: ya shafi bututun ƙarfe marasa sumul don tasoshin matsin lamba masu ƙarfi. Ya ƙayyade dalla-dalla ƙira da ƙera bututun ƙarfe waɗanda suka dace da yanayin zafi mai tsanani.
Duk da cewa waɗannan ƙa'idodi na iya bambanta a cikin cikakkun bayanai da takamaiman buƙatu, suna da kama da juna a cikin manufarsu da aikace-aikacensu gabaɗaya, wanda shine tabbatar da aminci da aikin bututun ƙarfe a cikin mahalli mai ban tsoro.
Kayayyakinmu Masu Alaƙa
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 na ERW, LSAW, da SSAW marasa sulɓi, da kuma cikakken jerin kayan haɗin bututu da flanges. Kayayyakinsa na musamman sun haɗa da ƙarfe masu inganci da ƙarfe marasa austenitic, waɗanda aka ƙera don biyan buƙatun ayyukan bututu daban-daban.
Alamu: ASTM A334, bututun ƙarfe na carbon, astm a334 gr 6, astm a334 gr 1.
Lokacin Saƙo: Mayu-20-2024