Rau lub caij nplooj ntoos hlav thiab lub caij nplooj ntoo caij nplooj ntoos hlav, raws li lub teb chaws tus qauv, 60, 70 thiab 65Mn steels hauv GB699-1999 "Cov Khoom Siv Zoo Zoo" muaj feem ntau xaiv.
Muaj 9 lub rooj sib tsoo nyob hauv Suav teb, uas tau txais kev tso cai los ntawm kev tso tawm txij li xyoo 2000 txog 2002 GB / T 97.3-2000, GB / T 5286-2001, GB / T95-2002, GB / T 96.1-2002, GB / T 96.2 - Xyoo 2002, GB / T97.1-2002, GB / T97.2-2002, GB / T97.4-2002 thiab GB / T5287-2002 cov khoom sib tsoo hauv tsev.
Raws li kev ua tiav qib ntawm kev ntxuav vaj tse, kuv pom zoo siv khoom:
Rau hauv 100HV chav kawm muaj ST12, ST13 thiab Q235, Q215, Q195, thiab lwm yam., Qhov nyuaj tawv deg yuav ncav cuag txog 110HV;
Rau 140HV qib siab muaj 08F, 08Al thiab 10, 10F, thiab lwm yam., Qhov nyuaj tawv nqaij yuav ncav cuag 140HV;
Rau 200HV thiab 300 HV qib, 45, 50, 60, 70 lossis 65Mn steel yuav tsum tau siv. Lawv yuav tsum tau quenched thiab tempered los ntawm cov kev kho tshav kub rau 200-300HV thiab 300-400HV kev cai.
Ca paum
Vim tias tus qauv, 100 HV, 140 HV chav kawm ntawv ntxhua khaub ncaws tuaj yeem ua los ntawm cov ntxhuav me me. Feem ntau ntawm cov tuam txhab lag luam siv Baosteel cov ntaub ntawv thaum xaiv cov ntaub ntawv, uas tswj cov nyiaj txias stamping. Q / BQB403-2003 Tus txheej txheem Baosteel tau piav me ntsis hauv qab no.
Muaj cov kev hloov loj nyob rau hauv "Cov Khoom Uas Muaj Cov Khoom Uas Muaj Cov Khoom Uas Muaj Cov Khoom Uas Muaj Cov Khoom Uas Muaj Cov Khoom Uas Muaj Cov Khoom Uas Muaj Cov Khoom Uas Muaj Cov Khoom Uas Muaj Cov Khoom Uas Muaj Cov Khoom Uas Muaj Cov Khoom Uas Muaj Qib" thiab Q / BQB403-2003 cov kev cai sib piv nrog cov qauv BZJ407-1999:
(1) Cov hom xov tooj raug hloov kho thiab muaj kev koom nrog. Muaj 8 hom nquag siv thiab hom khoom 5. St12 hloov rau DC01; ST13 rau DC03; St14, St15 rau DC04; BSC2 rau DC05; St16, St14-T, BSC3 rau DC06.
(2) Qhov zoo ntawm qhov nto ntawm hloov ob los ntawm peb mus rau:
Qib siab tshaj qhov kawg ntawm qhov xaus (FB), qhov chaw tso cai rau cov me nyuam tsis muaj teeb meem uas tsis cuam tshuam rau lub cev thiab coating, plating adhesion, xws li khawb me, qis, pitting, cov xim luam yeeb thiab oxidation xim.
Qhov zoo dua ntawm ob sab ntawm ib qho tiav lawm nto (FC) khoom muaj tsis pom teeb meem ntawm qhov muag liab qab thiab lwm sab yuav tsum tau ua raws li cov cai FB.
Qhov zoo ntawm sab super-tiav nto (FD) cov khoom yuav tsum tsis muaj cov yam tsis zoo, xws li nws yuav tsis cuam tshuam rau qhov zoo li tom qab pleev xim los yog qhov zoo zoo li tom qab tshuab electroplating, thiab lwm sab yuav tsum muaj tsawg tshaj li cov kev cai ntawm FB.
(3) Cov qauv ntawm tus qauv raug hloov los ntawm plaub mus rau ob, thiab tus nqi tswj ntawm qhov chaw npoo ntawm qhov chaw nce. Qhov nruab nrab roughness Ra thaum tus qauv saum npoo yog matte nto (D) yog 0.6 μm.
(4) Cov cai rau Si thiab cov ntsiab lus nyob rau hauv cov tshuaj lom neeg muaj pes tsawg leeg ntawm tsib hom raug tshem tawm, thiab cov ntsiab lus ntawm C, S, thiab Alt raug kho.