Kayayyaki
Ƙananan Bututun Zazzabi (A333 A334 Gr.6 Gr.3)
BUKUNAN SANNAN ZAFI
Girman Bututu--1/4 "Mai ƙima zuwa 42" OD
Kaurin bango - Jadawalin 10 zuwa XXH
An ƙera ƙananan ƙarfe na carbon masu ƙarancin zafi musamman don amfani da kayan aiki masu ƙarancin zafin jiki musamman don tasoshin matsa lamba.
Su ne ƙananan-zuwa matsakaici-carbon (0.20 zuwa 0.30%), babban-manganese (0.70 zuwa 1.60%), silicon (0.15 zuwa 0.60%) karafa, waɗanda ke da tsarin hatsi mai kyau tare da rarrabawar carbide iri ɗaya.Suna nuna matsakaicin ƙarfi tare da taurin ƙasa zuwa -50°F (-46°C).
Don tace hatsi da kuma inganta haɓakawa da haɓaka, karafa na carbon na iya ƙunsar 0.01 zuwa 0.04% na columbium.Ana kiran su karfen karfe na columbium, ana amfani da su don shinge, juzu'i, gears, sassan injin, da mutu da gage.Har zuwa 0.15% sulfur, ko 0.045 phosphorus, yana sa su yin injin kyauta, amma yana rage ƙarfi.
LTCS ne a nickel tushen gami karfe faranti musamman amfani ga low zafin jiki aikace-aikace a kasa - 150 deg F. Yafi amfani da cryogenic yi na sarari jiragen ruwa, low zafin jiki aikace-aikace a sinadaran shuka kasa -55 deg C.
SA-203 Karfe Plate Maki A, B, D, E da F Nickle Alloy Karfe Faranti.Don ƙananan zafin jiki (-150 ° F)
Ƙananan Zazzabi Carbon Karfe Tubes ASTM A334 Gr.1
ASTM A333-- Bututun Karfe mara sumul da Welded don Sabis na Ƙarƙashin Zazzabi:
Babban Daraja
Darasi na 1, Mataki na 3, Mataki na 4, Mataki na 6, Mataki na 7, Mataki na 8, Mataki na 9, Darasi na 10, Mataki na 11;
Low zazzabi carbon karfe bututu quenching zafin jiki a A3 + (30 ~ 50) ℃, a aikace, yawanci saita zuwa babba iyaka.High quenching zafin jiki zafi bututu iya yin low gudun, surface hadawan abu da iskar shaka rage, kuma zai iya inganta aiki yadda ya dace.The workpiece ne uniform austenite, zai buƙaci isasshen lokacin riƙewa.Idan ainihin ƙarfin tanderun da aka shigar, zai buƙaci dacewa don tsawaita lokacin riƙewa.In ba haka ba, za a iya samun rashin isasshen ƙarfi saboda rashin daidaituwar dumama da abin ya haifar.Duk da haka, lokacin riƙewa ya yi tsayi da yawa, zai kuma bayyana ƙananan hatsi, oxidation da decarbonization mai tsanani da ke shafar ingancin quenching.Mun yi imani da cewa idan shigar makera ne mafi girma fiye da tsari takardun, dumama rike lokaci da za a kara 1/5.
Low zafin jiki carbon karfe bututu saboda low hardenability, ya kamata a yi amfani da babban sanyaya kudi na 10% gishiri bayani.Workpiece a cikin ruwa, ya kamata hardenability, amma ba sanyi ba, idan 45 # daidai karfe chilled a brine, yana yiwuwa fatattaka na workpiece, wannan shi ne saboda lokacin da workpiece aka sanyaya zuwa game da 180 ℃, da austenite da sauri tuba zuwa doki s jiki. nama lalacewa ta hanyar wuce kima danniya saboda.Saboda haka, lokacin da quenching da tempering karfe da sauri sanyaya zuwa wannan zazzabi kewayon, ya kamata a dauki tsarin zuwa jinkirin sanyaya.
Kamar yadda yanayin zafin ruwa ke da wuyar fahimta, gwaninta a cikin aiki, lokacin da ruwan ya daina karkatar da kayan tarihi, zaku iya sanyaya ruwa (misali mai sanyaya mai na iya zama mafi kyau).Bugu da kari, da workpiece a cikin ruwa, dace mataki ya kamata har yanzu zama daidai da lissafi na workpiece, kamar yadda na yau da kullum motsa jiki.Matsakaicin sanyaya mai tsayuwa tare da tsayayyen workpiece, wanda ke haifar da rashin daidaituwa taurin, damuwa rashin daidaituwa barin babban nakasu na workpiece, har ma da fatattaka.
