Kupanga njira ndi ndondomeko ya otentha-anagulung'undisa ribbed zitsulo bar
Njira yakumbuyo:
Pamsika wamakono wa rebar, hrb400e amawerengera zambiri.Njira yolimbikitsira ma microalloy ndiyo njira yayikulu yopangira hrb400e padziko lapansi.Microalloy makamaka ndi vanadium alloy kapena niobium alloy, yomwe imagwiritsa ntchito zinthu zambiri za alloy chaka chilichonse.Chifukwa cha kuchepa kwa mchere wokhala ndi vanadium ndi niobium, kupezeka kwa ma alloying awa kumakhala kolimba.Choncho, ngati aloyi zili hrb400e zitsulo bar akhoza kuchepetsedwa, izo zibweretsa phindu lalikulu zachuma ndi chikhalidwe.
Muukadaulo womwe ulipo kale, chingwe chopangira mawaya awiri osachepetsa komanso kugubuduza mphero nthawi zambiri imatenga mphamvu ya vanadium alloy kuti ipange hrb400e, ndipo kuchuluka kwa vanadium ndi 0.035% mpaka 0.045%.
Patent yaku China cn104357741a imawulula mtundu wa hrb400e chitsulo cholimba kwambiri chosagwira chivomezi komanso njira yake yopangira.Kudzera njira, mankhwala yomalizidwa amapangidwa ndi kuchepetsa ndi sizing anagubuduza mphero, amene angathe kuonetsetsa kuti kutsirizitsa adagulung'undisa zitsulo ndi adagulung'undisa pa kutentha otsika 730 ~ 760 ℃ kupeza Pakuti mbewu finer, njira imeneyi si oyenera kupanga mizere. popanda kuchepetsa mphero.Patent yaku China cn110184516a imawulula njira yokonzekera waya wapamwamba φ6mm~hrb400e coiled screw.Mothandizidwa ndi mphamvu yothamanga kwambiri ya zipangizo, kutentha kwapansi kumayambira kuchokera ku kutentha kwa kutentha, ndipo kupanga popanda microalloying kumachitika.Kuipa kwa njirayi ndikuti Zomwe zimafunikira mphamvu ndi magwiridwe antchito amagalimoto a zida zopukutira zankhanza komanso zapakati ndizokwera kwambiri, makamaka pakupanga mzere wa torsion rolling, womwe umachepetsa moyo woyeserera wa zida ndikuwonjezera mtengo wokonza wa. zida, ndi mphamvu zokolola za waya mkulu φ6mm~hrb400e koyilo opangidwa ndi njira imeneyi ndi owonjezera.Kuchuluka kosakwanira, ndizovuta kutsimikizira kuchuluka kwa magwiridwe antchito.
Zinthu zoyendetsera ukadaulo:
Zomwe zilipo panopa zikufuna kupereka njira yopangira zitsulo zazitsulo zotentha, makamaka njira yopangira nkhono zowonongeka zotentha za waya wapamwamba φ8~φ10mm~hrb400e, zomwe zimagonjetsa zofooka zomwe tazitchula pamwambapa ndikuchepetsa kupanga. ndalama.
Chiwembu chaukadaulo chazomwe zidapangidwa pano:
Njira yopangira zitsulo zopindika ndi nthiti zotentha, mawonekedwe a waya wa nthiti ndi φ8 ~ φ10mm, ndipo njira yaukadaulo imaphatikizapo Kutenthetsa - billeting - kugubuduza - kugudubuza kwapakatikati - kuzirala - kumalizitsa - kuziziritsa - kuziziritsa - kuziziritsa - kuzizira - kupota - tebulo lodzigudubuza la mpweya-kusonkhanitsa koyilo-kuzizira pang'onopang'ono;kuchuluka kwazitsulo zachitsulo ndi c = 0.20% ~ 0.25%, si = 0.40% ~ 0.50%, mn = 1.40% ~ 1.60%, p≤0.045%, s ≤0.045%, v = 0.015% ~ 0.020%, zina zonse ndi Fe ndi zinthu zosapeŵeka zonyansa;kiyi ndondomeko masitepe monga: kutentha ng'anjo ndi 1070 ~ 1130 ℃, prefinishing Kugubuduza kutentha ndi 970 ~ 1000 ℃, ndi yomaliza anagubuduza kutentha ndi 840 ~ 1000 ℃.880 ℃;kutentha kwa 845 ~ 875 ℃;chomaliza anagubuduza kutentha m'munsimu recrystallization kutentha wa zone austenite;kuziziritsa mwachangu ndi zimakupiza pa tebulo wodzigudubuza mpweya utakhazikika, mpweya voliyumu ndi 100%;Kutentha kwa chivundikirocho ndi 640 ~ 660 ℃, kutentha kwa chivundikiro chotetezera kutentha ndi 600 ~ 620 ℃, ndipo nthawi yotetezera kutentha ndi 45 ~ 55s.
Mfundo yopangidwira: mu kutentha kwa 840-880 ℃, njere za austenite zimakulitsidwa ndi kupunduka, koma recrystallization sikuchitika.Komabe, magulu opindika amapangidwa mu njere za austenite, ndipo malekezero amagulu opindika nthawi zambiri amakhala pamalire ambewu, komanso palinso zomangira munjere monga malire owoneka bwino kuti agawanitse njere za austenite.Panthawi yosinthika kuchokera ku austenite kupita ku ferrite, malire onse otalikirapo ambewu ya austenite ndi gawo lowoneka bwino la malire a tirigu amakhala ngati malo opangira ma ferrite, zomwe zimapangitsa kuti ferrite isinthe.Kutentha kochepa kugudubuza mu mphero yomaliza kumachepetsa kugubuduza kwa mphero zowonongeka ndi zapakatikati ndi mphero zomaliza ndikuwonjezera moyo wautumiki wa zipangizo.
Zotsatira zopindulitsa zomwe zimapangidwazo ndi izi: powonjezera pang'ono v kuti kulimbikitsa microalloy, mphamvu zokolola zimakula bwino, v ndi c kupanga carbides, zomwe zimapangidwira panthawi yozizira pambuyo pogubuduza, ndipo zimagwira ntchito yolimbitsa mvula. .Ndodo ya waya yotentha yopangidwa ndi 600-700mpa, mphamvu ya zokolola za 420-500mpa, mphamvu yapakati yokolola pafupifupi 450mpa, ndi agt> 10%, yomwe imatsimikizira malire okwanira.Mphamvu zokolola ndizokhazikika, ndipo chiwongola dzanja chogwira ntchito chili pamwamba pa 99%.Kupangaku kumathetsa vuto loti mphero yokhotakhota imakhala yovuta kugudubuza kutentha pang'ono, imachepetsa mtengo powonetsetsa kuti mphamvu yopangirayo isachepe, ndipo imabweretsa phindu lalikulu pazachuma.
Njira zatsatanetsatane
Zomwe zili muzinthu zomwe zapangidwa panopa zikufotokozedwanso m'munsimu molumikizana ndi mawonekedwe.
Njira yopanga gulu la waya wapamwamba φ8mm~φ10mmhrb400e nkhono zopindika.The anagubuduza ndondomeko ndi: wotuluka kutentha: 1080 ~ 1120 ℃, kulowa chisanadze anagubuduza 1030 ~ 1060 ℃, kulowa kumaliza anagubuduza kutentha: 850 ~ 870 ℃, kupota kutentha: 850 ~ 870 ℃, zimakupiza mpweya voliyumu 100%, kulowa kutchinjiriza chivundikirocho. kutentha 640 ~ 660 ℃, 600 ~ 620 ℃ kunja kwa chivundikiro chotetezera kutentha, nthawi yosungira kutentha ndi 45 ~ 55s, ndipo imazizira mwachibadwa.Kapangidwe kakemidwe ka ndodo yamawaya kamene kakupangidwanso kameneka kakusonyezedwa mu Table 1, ndipo mphamvu zamakina za ndodo ya waya zosonyezedwa mu Table 2.
Mankhwala (wt%) a waya ndodo ya chitsanzo tebulo
Table 2 Makina a chitsanzo ndodo zamawaya
Mphamvu zokolola za waya wapamwamba φ8mm ~ φ10mmhrb400e nkhono zophimbidwa ndi njira yopangidwira zimakhala pamtunda wa 420 ~ 500mpa, agt ili pamwamba pa 10%, chiŵerengero cha zokolola zamphamvu chili pamwamba pa 1.35, ndipo mapangidwe a metallographic makamaka ferrite ndi pearlite., ntchito yokhazikika, mphamvu zokolola zokwanira ndi malire a agt, kupambana kwa njirayi ndikofunika kwambiri kuchepetsa ndalama zopangira komanso kuonjezera phindu la mizere yopangira mizere iwiri yozungulira yokhala ndi zida zakale.
Zaukadaulo:
1. Njira yopangira zitsulo zazitsulo zotentha zotentha, ndondomeko ya waya ndi φ8mm ~ φ10mm, ndipo ndondomeko yamakono imaphatikizapo kutentha - billeting - kupukuta - kupukuta - kupukuta - kuzizira - kutsiriza - kuzizira - kutsirizitsa - kuzizira - kupota. - mpweya Cold wodzigudubuza tebulo - kusonkhanitsa koyilo - pang'onopang'ono kuzirala, yodziwika kuti: mankhwala zikuchokera misa peresenti ya zitsulo ndi c = 0.20% ~ 0.25%, si = 0.40% ~ 0.50%, mn = 1.40% ~ 1.60%, p≤ 0.045 %, s≤0.045%, v=0.015%~0.020%, zina zonse ndi fe ndi zinthu zosalephereka zonyansa;masitepe ofunikira akuphatikizapo: kutentha kwapang'onopang'ono ndi 1070 ~ 1130 ° C, kutentha komaliza ndi 970 ~ 1000 ° C, ndipo kumalizidwa komaliza kumachitika.Kutentha ndi 840 ~ 880 ℃;kutentha kozungulira ndi 845 ~ 875 ℃;chomaliza anagubuduza kutentha m'munsimu kutentha recrystallization wa zone austenite;imatsitsidwa mwachangu ndi fani pa tebulo loziziritsa mpweya, ndipo voliyumu ya mpweya ndi 100%;tebulo lodzigudubuza ndi insulated ndi kutseka kutchinjiriza chivundikirocho, kutentha kulowa kutchinjiriza chivundikirocho ndi 640 ~ 660 ℃, ndi kutentha yotuluka kutchinjiriza chivundikirocho ndi 600 ~ 620 ℃, ndi nthawi mu kutchinjiriza chivundikirocho ndi 45 ~ 55s.
Chidule chaukadaulo
Njira yopangira zitsulo zopindika ndi nthiti zachitsulo, masika zitsulo zotentha-wozungulira waya ndodo ndi Φ8mm ~ Φ10mm, kuchuluka kwa zitsulo zachitsulo ndi C = 0.20% ~ 0.25%, Si = 0.40% ~ 0.50% , Mn = 1.40% ~ 1.60%, P≤0.045%, S≤0.045%, V=0.015% ~ 0.020%, zina zonse ndi Fe ndi zinthu zosalephereka zonyansa;kugubuduza ndondomeko ndi: kutentha ng'anjo ndi 1070 ~ 1130 ℃, ndi chisanadze kutsirizitsa ikuchitika.The anagubuduza kutentha ndi 970 ~ 1000 ℃, kutsiriza anagubuduza kutentha ndi 840 ~ 880 ℃;kutentha kozungulira ndi 845 ~ 875 ℃;chomaliza anagubuduza kutentha ndi pansi recrystallization kutentha kwa dera austenite;%;Pambuyo kutseka chivundikiro chotchinjiriza cha chodzigudubuza, kutentha kolowera mu chivundikirocho ndi 640 ~ 660 ℃, ndipo kutentha kwa kutuluka kwa chivundikirocho ndi 600 ~ 620 ℃, ndipo nthawi yotsekera ndi 45 ~ 55s.Powonjezera pang'ono V alloy ndi kutsiriza kugubuduza pa kutentha kochepa, kupangidwako sikungotsimikizira kugwira ntchito kosasunthika kwa zipangizo, komanso kumachepetsa zomwe zili ndi alloy ndi mtengo wake.
Nthawi yotumiza: Aug-30-2022