Dab tsi yog Dab Bar

Hloov cov hlau yog qhov khoom siv ntev ntev ntawm cov hlau nrog ib puag ncig.Qhov tshwj xeeb yog qhia tawm hauv txoj kab uas hla, hauv millimetres (mm), xws li" 50mm" yog lub puag ncig steel nrog txoj kab uas hla 50 hli.Kev faib tawm los ntawm txheej txheem

Hloov cov hlau tau muab faib ua peb hom: cov khaub thuas sib dhos, cov hlau forged thiab cov txias txias.Kub dov daim hlau yog 5.5-250 hli hauv qhov loj.Ntawm lawv: 5.5-25 hli me me puag ncig cov hlau feem ntau nyob hauv cov kab ncaj qha khoom, feem ntau siv rau cov khoom siv rau kev ruaj khov, ntsia hlau thiab ntau yam khoom siv hlau;Hloov cov hlau loj dua 25 hli, feem ntau yog siv hauv kev tsim cov tshuab qhov chaw, seamless steel tube billet, lwm yam

Raug faib los ntawm cov tshuaj lom neeg muaj pes tsawg leeg

Cov pa roj carbon steel hlau tuaj yeem muab faib ua cov pa roj carbon steel qis, nruab nrab cov pa roj carbon steel thiab cov pa roj carbon steel ntau raws li lawv cov tshuaj lom neeg (uas yog cov ntsiab lus carbon).

(1) Cov carbon hlau tsawg

Kuj tseem hu ua cov hlau tsis tshua muaj hlau, nrog cov ntsiab lus carbon los ntawm 0.10% rau 0.30%, hlau tsis yooj yim yog lees txais ntau yam kev siv tshuab xws li forging, vuam thiab txiav, thiab feem ntau yog siv hauv kev tsim cov saw, rivets, bolts, khawm, lwm yam.

(2) cov pa roj carbon nrab

Cov ntsiab lus carbon ntawm 0.25% ~ 0.60% carbon hlau.Muaj cov hlau tua, ib nrab - tua hlau, rimmed hlau thiab lwm yam khoom.Ntxiv rau cov pa roj carbon, nws tseem tuaj yeem muaj qee qhov me me ntawm manganese (0.70% ~ 1.20%).Raws li cov khoom lag luam zoo, nws tuaj yeem faib ua cov pa roj carbon zoo tib yam cov txheej txheem steel thiab ua tau zoo carbon cov qauv steel.Kev ua haujlwm kub thiab txiav kev ua tau zoo, vuam kev ua haujlwm tsis zoo.Lub zog thiab tawv tawv yog siab dua li ntawm cov hlau tsis tshua muaj, tab sis cov yas thiab cov tawv yog qhov qis dua li ntawm cov carbon hlau tsawg.Kub dov thiab txias cov ntaub ntawv tuaj yeem siv ncaj qha lossis tom qab kho cua sov yam tsis muaj kev kho cua sov.Cov pa roj carbon nrab tom qab quenching thiab tempering muaj cov cuab yeej zoo txhua yam muaj zog.Qhov siab tshaj plaws uas tuaj yeem ua tiav tau yog hais txog HRC55 (HB538), σ B yog 600 ~ 1100MPa.Yog li nyob rau hauv kev siv ntau yam ntawm nruab nrab lub zog, cov pa roj carbon monoxide nruab nrab yog qhov feem ntau siv, ntxiv rau kev ua cov khoom siv hauv tsev, tab sis kuj tseem muaj ntau ntawm kev siv hauv kev tsim cov khoom siv ntawm cov tshuab nruab nrab.

(3) cov carbon hlau tuab

Feem ntau hu ua cuab tam steel, nws muaj cov pa roj carbon los ntawm 0.60% rau 1.70% thiab tuaj yeem ua rau hardened thiab tempered.Hammer, crowbars, thiab lwm yam yog tsim los ntawm 0.75% carbon hlau;Kev txiav cov cuab yeej xws li laum, cov kav hlau thiab reamer yog tsim los ntawm cov hlau nrog cov ntsiab lus carbon los ntawm 0.90% mus rau 1.00%.

Raws li kev ua tau zoo ntawm cov hlau

Raws li kev ua tau zoo ntawm cov hlau, nws muaj peev xwm raug faib ua cov pa roj carbon steel zoo tib yam thiab zoo siab carbon hlau.

(1) Cov pa roj carbon hlau sib txawv, tseem hu ua cov pa roj carbon zoo tib yam, muaj qhov txwv dav dav rau cov pa roj carbon ntau ntau, kev ua tau zoo thiab cov ntsiab lus ntawm phosphorus, sulfur thiab lwm yam khoom seem.Nyob rau hauv Suav teb thiab qee lub tebchaws raws li kev lees paub ntawm cov khoom xa tuaj thiab muab faib ua peb pawg: Qeb A steel (A steel) yog los lav rau cov khoom siv ntawm cov hlau.Qib B steels (Class B steels) yog cov hlau uas lav cov tshuaj lom neeg.Cov khoom siv tshwj xeeb (Cov C Tub Kawm Cuam Cuam) yog cov hlau uas lav tau ob qho tib si cov khoom nruab nrog thiab tshuaj lom neeg, thiab feem ntau siv hauv kev tsim cov ntu ntu tseem ceeb.Tuam Tshoj tsim thiab siv cov hlau A3 steel (Chav A No.3 hlau) nrog cov pa roj carbon ntau ntawm li 0.20%, uas yog siv cov kev tsim kho hauv engineering.

Qee cov pa roj carbon txhuam cov txheej txheem tseem ntxiv me me ntawm txhuas lossis niobium (lossis lwm yam carbide-forming ntsiab lus) los ua cov pa roj nitric lossis carbide kom txwv cov qoob loo ntau ntxiv, ntxiv dag zog rau cov hlau thiab txuag hlau.Nyob rau hauv Suav teb thiab qee lub tebchaws, txhawm rau ua kom tau raws li qhov tshwj xeeb ntawm kev ua haujlwm steel, cov tshuaj lom neeg thiab cov khoom ntawm cov pa roj carbon cov qauv sib txawv tau hloov kho, yog li cov txheej txheem kev ua haujlwm ntawm cov hlau tsis huv ntawm cov qauv hlau (xws li choj, tsev, hlau. bar, siab txog txoj hlab hlau, thiab lwm yam) tau tsim.

(2) Piv nrog rau cov pa roj carbon ua qauv, cov ntsiab lus ntawm leej faj, phosphorus thiab lwm yam tsis yog xim hlau rau hauv cov pa roj carbon zoo ntawm cov txheej txheem hlau qis dua.Cov hlau no tau raug cais rau peb pawg, nyob ntawm lawv cov ntsiab lus carbon thiab siv:

(1) tsawg dua 0.25% C yog cov carbon hlau tsawg, tshwj xeeb tshaj yog cov pa roj carbon uas muaj qis dua 0.10% ntawm 08F, 08Al, thiab lwm yam, vim nws qhov kev nqus tau zoo thiab weldability thiab yog dav siv raws li qhov tob kos duab yam li tsheb, cov kaus poom ......Nkaujhnubqub los ib yam.20G yog cov khoom siv tseem ceeb hauv kev tsim cov dej kub hnyiab.Ntxiv rau, cov pa roj carbon qes qis kuj tseem siv dav ua carburizing steel rau kev tsim ua tshuab.

②0.25 ~ 0.60% C yog nruab nrab cov pa roj carbon steel, uas feem ntau siv nyob rau hauv qhov xwm txheej thiab qhov npau taws, thiab yog siv los ua qhov chaw rau cov tshuab kev lag luam kev lag luam.

(3)> 0.6% C rau siab cov pa roj carbon steel, feem ntau siv rau hauv kev tsim cov dej tsuag, zog, yob, thiab lwm yam.

Raws li cov ntsiab lus sib txawv ntawm manganese, nws muaj peev xwm raug faib ua ob pawg steel nrog cov ntsiab lus manganese (0.25 ~ 0.8%) thiab cov ntsiab lus manganese ntau (0.7 ~ 1.0% thiab 0.9 ~ 1.2%).Manganese tuaj yeem txhim kho lub hardenability ntawm hlau, ntxiv dag zog rau ferrite, thiab txhim kho cov zis muaj zog, tensile lub zog thiab hnav tsis kam ntawm cov hlau.Feem ntau tom qab qib ntawm cov hlau nrog cov ntsiab lus siab manganese, cov cim ntxiv" Mn" yog ntxiv, xws li 15Mn, 20Mn kom paub qhov txawv nws ntawm cov pa roj carbon steel nrog cov ntsiab lus manganese.