Karfe Zagaye (Round Bar Karfe)

Rarraba ta tsari
An rarraba ƙarfen zagaye a matsayin mai birgima mai zafi, ƙirƙira da zane mai sanyi.Hot birgima zagaye karfe ne 5.5-250 mm a girman.Daga cikin su: 5.5-25 mm ƙananan ƙananan ƙarfe mafi yawa zuwa madaidaiciya madaidaiciya a cikin dauren wadata, wanda aka saba amfani dashi don ƙarfafa sanduna, kusoshi da sassa daban-daban na inji;Round karfe girma fiye da 25 mm, yafi amfani a yi na inji sassa, sumul karfe bututu billet, da dai sauransu.
Rarrabe ta hanyar sinadaran sinadaran
Carbon karfe za a iya raba low carbon karfe, matsakaici carbon karfe da high carbon karfe bisa ga sinadaran abun da ke ciki (watau carbon abun ciki).
(1) Karfe mai laushi
Har ila yau, an san shi da ƙarfe mai laushi, abun ciki na carbon daga 0.10% zuwa 0.30% Low carbon karfe yana da sauƙi don karɓar nau'o'in sarrafawa irin su ƙirƙira, walda da yanke, sau da yawa ana amfani da su wajen kera sarƙoƙi, rivets, bolts, shafts, da dai sauransu.
(2) Matsakaicin carbon karfe
Carbon abun ciki 0.25% ~ 0.60% carbon karfe.Akwai karfen mai kwantar da hankali, karfe mai hana ruwa gudu, karfen tafasa da sauran kayayyakin.Bayan carbon, kuma yana ƙunshe da ƙaramin adadin manganese (0.70% ~ 1.20%).Bisa ga ingancin samfurin ne zuwa kashi talakawa carbon tsarin karfe da high quality carbon tsarin karfe.Kyakkyawan thermal aiki da yankan yi, rashin aikin walda mara kyau.Ƙarfi da taurin sun fi girma fiye da ƙananan ƙarfe na carbon, amma filastik da taurin sun kasance ƙasa da ƙananan ƙarfe na carbon.Za a iya amfani da kayan da aka zana zafi da sanyi kai tsaye ba tare da maganin zafi ba ko bayan maganin zafi.A matsakaici carbon karfe bayan quenching da tempering yana da kyau m inji Properties.Mafi girman taurin da aka samu shine kusan HRC55(HB538), σb shine 600 ~ 1100MPa.Don haka a cikin matsakaicin ƙarfin ƙarfin amfani daban-daban, matsakaicin ƙarfe na carbon shine mafi yawan amfani da shi, ban da matsayin kayan gini, amma kuma ana amfani da adadi mai yawa wajen kera sassa daban-daban na inji.
(3) Babban karfen carbon
Sau da yawa ana kiransa karfen kayan aiki, abun cikin carbon yana fitowa daga 0.60% zuwa 1.70% kuma ana iya taurare da fushi.Hammers da crowbars an yi su ne da karfe tare da abun ciki na carbon na 0.75%.Kayan aikin yanke irin su rawar soja, famfo, reamer, da sauransu ana kera su daga karfe tare da abun ciki na carbon na 0.90% zuwa 1.00%.

Rarraba ta ingancin karfe
Bisa ga ingancin karfe za a iya raba talakawa carbon karfe da high quality carbon karfe.
(1) Karfe tsarin tsarin carbon na yau da kullun, wanda kuma aka sani da ƙarfe na carbon na yau da kullun, yana da iyakacin iyaka akan abun ciki na carbon, kewayon aiki da abun ciki na phosphorus, sulfur da sauran abubuwan da suka rage.A kasar Sin da wasu kasashe, an kasu kashi uku bisa ga ka'idojin isar da garantin: Karfe A Class A karfe ne tare da garantin injuna.Ƙarfe B (Class B steels) ƙarfe ne tare da tabbacin abun da ke ciki.Ƙarfe na musamman (Class C steels) ƙarfe ne waɗanda ke ba da tabbacin kaddarorin injina da abun da ke tattare da sinadarai, kuma galibi ana amfani da su wajen kera wasu mahimman sassa na tsari.Kasar Sin tana samarwa da amfani da mafi yawan karfen A3 (Class A No.3 karfe) tare da abun ciki na carbon kusan 0.20%, wanda galibi ana amfani dashi a cikin tsarin injiniya.
Wasu ƙarfe na tsarin carbon kuma suna ƙara alamar aluminum ko niobium (ko wasu abubuwan haɓakar carbide) don samar da barbashi na nitride ko carbide, don iyakance haɓakar hatsi, ƙarfafa ƙarfe, adana ƙarfe.A kasar Sin da wasu kasashe, domin biyan bukatu na musamman na kwararrun karfe, an daidaita sinadaran sinadaran da kaddarorin tsarin karfe na yau da kullun, ta haka ne ke bunkasa jerin karfen tsarin karfe na yau da kullun don amfani da kwararru (kamar gada, gini, rebar, matsa lamba jirgin ruwa karfe, da dai sauransu).
(2) Idan aka kwatanta da talakawa carbon tsarin karfe, abun ciki na sulfur, phosphorus da sauran wadanda ba karfe inclusions a high quality carbon tsarin karfe ne m.Dangane da abun ciki na carbon da amfani daban-daban, irin wannan nau'in karfe yana da kusan kashi uku:
① Kasa da 0.25% C ne low carbon karfe, musamman tare da carbon kasa da 0.10% na 08F,08Al, saboda da kyau zurfin zane da weldability da aka yadu amfani da zurfin zane sassa kamar motoci, gwangwani..... Da dai sauransu 20G shine babban kayan aikin tukunyar jirgi na yau da kullun.Bugu da kari, m karfe kuma ana amfani da ko'ina a matsayin carburizing karfe, amfani da injuna masana'antu.
②0.25 ~ 0.60% C ne matsakaici carbon karfe, mafi yawa amfani da yanayin da tempering, yin sassa a cikin inji masana'antu masana'antu.
(3) Fiye da 0.6% C shine babban ƙarfe na carbon, galibi ana amfani dashi a cikin kera maɓuɓɓugan ruwa, gears, rolls, da sauransu.
Dangane da abun ciki na manganese daban-daban, ana iya raba shi cikin abun ciki na manganese na yau da kullun (0.25 ~ 0.8%) da babban abun ciki na manganese (0.7 ~ 1.0% da 0.9 ~ 1.2%) rukunin karfe.Manganese na iya inganta ƙarfin ƙarfe, ƙarfafa ferrite, inganta ƙarfin yawan amfanin ƙasa, ƙarfin ƙarfi da juriya na ƙarfe.Yawancin lokaci ana ƙara "Mn" bayan darajar karfe mai yawan manganese, kamar 15Mn da 20Mn, don bambanta shi da carbon karfe tare da abun ciki na manganese na yau da kullum.