ASTM A192 (ASME SA192) bututun ƙarfe bututu ne mai kama da na ƙarfe mara matsala wanda ake amfani da shi a yanayin zafi mai yawa da matsin lamba mai yawa kuma ana amfani da shi sosai a cikin tukunyar ruwa da na'urorin musanya zafi.
Diamita na waje: 1/2″ – 7″ (12.7 mm – 177.8 mm);
Kauri daga bango: 0.085″ – 1.000″ (2.2 mm – 25.4 mm);
Ana iya samar da wasu girman bututun ƙarfe kamar yadda ake buƙata, muddin an cika duk wasu buƙatun A192.
Ana ƙera ASTM A192 ta amfani da tsari mai sauƙi kuma ana kammala shi da zafi ko sanyi kamar yadda ake buƙata;
Haka kuma, tantance bututun ƙarfe ya kamata ya nuna ko bututun ƙarfen ya ƙare da zafi ko kuma ya ƙare da sanyi.
Kammalawa mai zafi: Yana nufin tsarin kammala girman bututun ƙarfe a cikin yanayi mai zafi. Bayan bututun ƙarfe ya yi aikin sarrafa zafi kamar birgima mai zafi ko zane mai zafi, ba a ƙara sarrafa shi da sanyi ba. Bututun ƙarfe da aka gama da zafi suna da ƙarfi da juriya mafi kyau amma suna da juriya mai girma.
An gama sanyi: Ana sarrafa bututun ƙarfe zuwa girmansa na ƙarshe ta hanyar amfani da hanyoyin aiki na sanyi kamar naɗewa da sanyi ko zane mai sanyi a zafin ɗaki. Bututun ƙarfe da aka gama da sanyi suna da juriyar girma mafi daidaito da kuma saman da ya fi santsi amma suna iya sadaukar da ɗan ƙarfi.
Bututun ƙarfe marasa tsari ba sa buƙatar maganin zafi.
Ana yin amfani da bututun ƙarfe marasa shinge da aka gama da sanyi a zafin da ya kai digiri 1200 na Fahrenheit [650°C] ko sama da haka bayan an gama yin amfani da sanyi.
| Daidaitacce | C | Mn | P | S | Si |
| ASTM A192 | 0.06-0.18% | 0.27-0.63% | matsakaicin 0.035% | matsakaicin 0.035% | matsakaicin 0.25% |
ASTM A192 ba ya ba da damar ƙara wasu abubuwa zuwa ga sinadaran da ke cikinsa.
| Ƙarfin tauri | Ƙarfin bayarwa | Ƙarawa | Gwajin Faɗin Ƙasa | Gwajin Ƙwaƙwalwa |
| minti | minti | a cikin inci 2 ko 50 mm, minti | ||
| 47 ksi [325 MPa] | 26 ksi [180 MPa] | Kashi 35% | Duba ASTM A450, Sashe na 19 | Duba ASTM A450, Sashe na 21 |
Sai dai idan an ƙayyade wani abu a cikin ASTM A192, kayan da aka tanadar a ƙarƙashin wannan ƙayyadaddun bayanai za su dace da buƙatun da suka dace naASTM A450/A450M.
Taurin Rockwell: 77HRBW.
Ga bututun ƙarfe waɗanda kaurinsu bai wuce 0.2" ba [5.1 mm].
Taurin Brinell: 137HBW.
Don bututun ƙarfe mai kauri na inci 0.2 [5.1 mm] ko fiye.
Don takamaiman buƙatun aiki, duba ASTM A450, Abu na 23.
· Mita: Kowace bututun ƙarfe ana gwada matsin lamba na hydrostatic.
· Lokaci: A kiyaye matsakaicin matsin lamba na akalla daƙiƙa 5.
· Darajar matsin lamba na ruwa: An ƙididdige ta amfani da dabarar da ke ƙasa. Lura da naúrar.
Inci - Fam Raka'o'i: P = 32000 t/D
Raka'o'in SI: P = 220.6t/D
P = matsin lamba na gwajin hydrostatic, psi ko MPa;
t = kauri na bango da aka ƙayyade, in. ko mm;
D = diamita na waje da aka ƙayyade, in. ko mm.
· Sakamako: Idan babu ɓuɓɓugar ruwa a cikin bututun, ana ɗaukar gwajin ya wuce.
Madadin gwajin hydrostatic kuma yana yiwuwa tare da gwajin da ya dace wanda ba zai lalata ba.
Duk da haka, ma'aunin bai fayyace wace hanyar gwaji ba ce za a iya amfani da ita ba.
Bututun da za a saka a cikin tukunyar za su tsaya suna faɗaɗawa da kuma ƙwanƙwasa ba tare da nuna tsagewa ko lahani ba. Bututun zafi mai zafi idan aka yi amfani da su yadda ya kamata za su tsaya duk ayyukan ƙirƙira, walda, da lanƙwasa da ake buƙata don amfani ba tare da haifar da lahani ba.
Botop Karfewani kamfani ne mai kera bututun ƙarfe na carbon mai inganci kuma mai samar da kayayyaki daga China, kuma mai sayar da bututun ƙarfe mara matsala, yana ba ku nau'ikan hanyoyin magance bututun ƙarfe iri-iri!
Tuntube mudon samun ƙiyasin farashi daga wani mai hayar bututun ƙarfe mara shinge na China.
