Ⅰ-Cr12MoV Txias Ua Haujlwm Hlau Tuag yog dab tsi?
Cov hlau Cr12MoV ua haujlwm txias uas tsim los ntawm zhongao yog cov khoom siv hlau uas tsis yooj yim hnav, tawv, hloov pauv me me, ruaj khov thermal, muaj zog khoov siab, thiab lwm yam khoom. Nws yog qhov thib ob tom qab cov hlau ceev ceev thiab yog cov khoom siv tseem ceeb rau kev luam ntawv, txias, thiab lwm yam khoom siv. Cr12MoV hlau tuag yog cov hlau carbon molybdenum ledeburite nrog cov ntsiab lus carbon qis dua li Crl2 hlau. Molybdenum thiab vanadium raug ntxiv los txhim kho kev ua haujlwm kub, kev cuam tshuam toughness thiab carbide faib ntawm cov hlau. Cr12MoV hlau tuag muaj cov ntsiab lus carbon qis dua li Cr12 hlau tuag. Kev ntxiv cov khoom sib xyaw tshiab txhim kho qhov tshwm sim ntawm cov carbide tsis sib xws. Ntxiv mus, molybdenum thiab molybdenum tuaj yeem txo qhov sib cais carbide thiab txhim kho hardenability. Vanadium thiab vanadium tuaj yeem ua kom cov nplej zoo thiab ua kom tawv dua, Yog li ntawd, zhongao's Cr12MoV pwm hlau muaj qhov tawv siab, nrog rau qhov seem hauv qab 400 hli uas tuaj yeem tua tau tag nrho, thiab tseem tuaj yeem tswj tau qhov tawv zoo thiab hnav tsis kam ntawm 300-400 ℃. Dhau li ntawm qhov ntawd, zhongao's Cr12MoV pwm hlau muaj qhov tawv zoo dua li lwm cov ntaub ntawv ntawm tib qib hauv kev lag luam dav dav, thiab qhov ua tau ntawm kev hloov pauv ntim thaum lub sijhawm tua hluav taws xob raug txo qis heev. Yog li ntawd, nws qhov kev tiv thaiv kev hnav tsis kam siab thiab cov khoom siv kho tshuab zoo ua rau Jinbaicheng's Cr12MoV pwm hlau tsim nyog dua rau kev tsim ntau yam pwm nrog qhov seem loj, cov duab nyuaj, thiab tiv taus kev cuam tshuam loj, nrog rau ntau yam cuab yeej stamping txias hauv qab kev ua haujlwm hnyav, xws li xuas nrig ntaus tuag, txiav tuag, dov tuag, thiab lwm yam phaj hlau kos duab tob, pom voj voog, cov cuab yeej txheem thiab cov cuab yeej ntsuas, xov dov tuag, thiab lwm yam.
Ⅱ-Cov Lus Qhia Txog Daim Ntawv Thov ntawm Cr12MoV Txias Ua Haujlwm Tuag Hlau
① Cr12MoV siv tau los ua cov duab sib txawv ntawm convex, concave, thiab ntxig rau punching pwm nrog cov khoom tuab> 3 hli. Nws raug pom zoo kom muaj qhov nyuaj ntawm 58 ~ 62HRC thaum ua cov pwm convex thiab 60 ~ 64HRC thaum ua cov pwm concave.
② Rau kev tsim cov pwm punch thiab concave uas xav tau kev tiv thaiv kev hnav siab, nws raug pom zoo kom muaj qhov nyuaj ntawm 60 ~ 62HRC thaum ua cov punch thiab 62 ~ 64HRC thaum ua cov pwm concave.
③ Rau kev tsim cov pwm uas tsis yooj yim hnav hauv cov pwm kos duab tob, nws raug pom zoo kom muaj qhov nyuaj ntawm 62 ~ 64HRC.
④ Siv rau kev tsim cov pwm convex, cov pwm concave, thiab cov blocks ntxig uas xav tau kev tiv taus hnav siab thiab cov duab nyuaj hauv cov pwm khoov. Nws raug pom zoo kom muaj qhov nyuaj ntawm 60-64HRC thaum ua cov pwm convex, thiab 60-64HRC thaum ua cov pwm concave.
⑤ Rau kev tsim cov pwm txias thiab pwm rau cov khoom txhuas, nws raug pom zoo kom muaj qhov nyuaj ntawm 60-62HRC thaum ua cov pwm, thiab 62-64HRC thaum ua cov pwm.
⑥ Nws raug pom zoo kom siv qhov nyuaj ntawm 62 ~ 64HRC rau cov pwm convex thiab concave siv rau kev ua cov pwm tooj liab txias extrusion.
⑦ Cov pwm convex thiab concave siv rau cov pwm hlau txias extrusion raug pom zoo kom muaj qhov nyuaj ntawm 62 ~ 64HRC.
⑧ Cov phaj hlau caij nplooj ntoos hlav nrog feem pua ntawm 0.65% ~ 0.80% siv rau kev tsim cov pa roj carbon muaj qhov nyuaj ntawm 37 ~ 42HRC, muab lub neej ntev txog li 150000 lub voj voog.
⑨ Cov phaj hlau caij nplooj ntoos hlav nrog feem pua ntawm 0.65% txog 0.80% siv rau kev tsim cov pa roj carbon muaj qhov nyuaj ntawm 37-42HRC, thiab nrog kev kho nitriding ntxiv, lawv lub neej kev pabcuam tuaj yeem ncav cuag 400000 zaug.
Ⅲ-Kev ua ntawm Cr12MoV Txias Ua Haujlwm Tuag Hlau:
Cov lus qhia rau kev ua kom cov pwm txias mos: Tiv thaiv thiab ua kom cov pwm sov nrog cov hlau filings ntawm qhov kub ntawm 760-780 ℃ rau 10 teev, nrog rau lub cub tawg txias thiab qhov nyuaj ntawm 196HBW. Kev tsim cov pwm txias tuaj yeem ua tiav tau zoo.
Cov lus qhia rau kev siv isothermal spheroidizing annealing: 850-870 ℃ × 3-4 teev, txias hauv lub cub tawg rau 740-760 ℃ × 4-5 teev ntawm kev kho isothermal, nrog cua txias hardness ≤ 241HBW, eutectic carbide qib ≤ 3, qhov kub zoo tshaj plaws isothermal 740-76o ℃, thiab lub sijhawm ≥ 4-5 teev.
Cov lus qhia rau spheroidizing annealing: (860 ± 10) ℃ × 2-4 teev, lub cub tawg txias ntawm qhov txias ntawm 30 ℃ / teev, (740 ± 10) ° C x 4-6 teev, maj mam txias rau 500-600 ℃ nrog lub cub tawg, cua txias tom qab tso tawm, qhov nyuaj 207-255HBW.
Cov lus qhia dav dav txog kev quenching thiab tempering: quenching kub 1000-1050 ℃, roj quenching lossis quenching, hardness 260HRC, tempering kub 160-180, tempering lub sijhawm 2 teev, lossis tempering kub 325-375 ° C, tempering 2-3 zaug.
Qhov kub quenching qis thiab qhov kub quenching qis rov qab: 950 ℃ -1040 ℃, qhov kub tempering yog nyob ib ncig ntawm 200 ℃, tempering theem nrab.
Kub quenching siab thiab kub rov qab quenching siab: 1050-1100 ℃, kub tempering yog nyob ib ncig ntawm 520 ℃, tempering theem ob. Txoj kev hardening theem ob siv rau quenching siab thiab rov ua dua siab txhim kho qhov nyuaj, tab sis cov noob yuav loj hlob.
Kev kho mob cryogenic: Cr12MoV hlau raug kho cryogenic, uas tuaj yeem ua rau cov carbides ultrafine tawg los ntawm cov martensite uas tau quenched, thiab tom qab ntawd cov carbides ultrafine no tuaj yeem hloov mus ua carbides tom qab 200 ℃ qis-kub tempering. Cov martensite uas tsis muaj kev kho mob cryogenic tsuas yog ua rau muaj me ntsis ntawm carbide hauv qee thaj chaw tom qab hluav taws kub qis.
Zhongao siv txoj kev kho cua sov tshuaj uas kub tsawg, uas tswj tau qhov tawv thiab hnav tsis kam ntawm Cr12MoV hlau. Peb txheej kho cua sov tshuaj uas kub tsawg uas siv ntau, uas yog ion nitriding, gas nitrocarburizing, thiab ntsev da dej sulfur cyanide co nitriding, muaj kev tiv taus kev cuam tshuam thiab kev nplaum zoo, nrog rau ntsev da dej sulfur cyanide co nitriding yog qhov zoo tshaj plaws.
Lub neej ua haujlwm ntawm lub pwm kos duab rau zhongao's Cr12MoV stainless hlau cov khoom siv, tom qab kev kho roj nitrocarburization, ncav cuag ntau dua 30000 daim, uas yog ntau dua 10 npaug ntev dua li ntawm cov pwm zoo sib xws kho nrog kev quenching thiab tempering ib txwm muaj.
Lub sijhawm tshaj tawm: Tsib Hlis-23-2024