Lub hom phiaj ntawm Tempering

 

Nyob rau hauv kev tsim high-carbon steel pwm, tempering yog tsuas yog tsom rau kev tshem tawm cov kev ntxhov siab sab hauv tsim thaum lub sij hawm quenching txheej txheem. Muaj ntau qhov kev ntxhov siab nyob hauv qhov siab - carbon steel pwm tom qab quenching, uas yog tshwm sim los ntawm qhov tsis sib xws microstructure transformation thaum lub sij hawm quenching txias txheej txheem. Cov kev ntxhov siab sab hauv no tuaj yeem ua rau deformation lossis txawm tias tawg ntawm pwm thaum ua tom ntej lossis siv. Piv txwv li, rau lub siab-precision txhaj pwm, yog tias muaj ntau qhov kev ntxhov siab sab hauv, tom qab pwm kab noj hniav yog machined, kab noj hniav dimension yuav hloov vim kev ntxhov siab tso tawm, yog li cuam tshuam cov precision ntawm cov khoom yas.

 

Tempering kuj tuaj yeem kho qhov sib npaug ntawm qhov hardness thiab toughness ntawm pwm. High - carbon steel muaj ib tug kuj siab hardness tom qab quenching, tab sis nws toughness yog kuj tsawg. Los ntawm tempering, lub hardness yuav raug txo mus rau ib qho twg thiab lub toughness tuaj yeem txhim kho, ua rau cov pwm tuaj yeem hloov kho kom haum rau kev ua haujlwm sib txawv. Piv txwv li, rau qee cov pwm forging uas yuav tsum tau ua rau muaj kev cuam tshuam, tsim nyog ua kom lub zog tom qab tempering tuaj yeem tiv thaiv cov pwm los ntawm kev puas tsuaj los ntawm kev cuam tshuam.

 

Kev xaiv ntawm Tempering Kub

 

Tsawg - Kub Tempering (150 - 250 degree): Txoj kev tempering no tsuas yog siv los tswj lub siab hardness ntawm high - carbon steel pwm. Nyob rau hauv qhov kub thiab txias, qhov hloov ntawm microstructure ntawm pwm yog me me, thiab decomposition degree ntawm martensite yog tsawg. Nws lub luag haujlwm tseem ceeb yog txhawm rau tshem tawm ib feem ntawm quenching sab hauv kev ntxhov siab, txhim kho qhov toughness ntawm pwm mus rau qee yam, thiab tswj qhov siab hardness ntawm pwm. Nws yog haum rau txias - ua hauj lwm pwm, xws li stamping pwm. Cov pwm no yuav tsum muaj kev sib txhuam zoo nrog cov khoom ua haujlwm thaum lub sijhawm ua haujlwm. High hardness tuaj yeem ua kom ntseeg tau qhov hnav tsis kam ntawm pwm, thiab qhov tsim nyog txhim kho toughness tuaj yeem txo qhov kev pheej hmoo ntawm pwm ntug chipping.

 

Nruab nrab - Kub Tempering (350 - 500 degree): Thaum lub tempering kub nyob rau hauv no ntau yam, lub martensite nyob rau hauv siab - carbon steel ntxiv decomposes, thiab carbides pib aggregate thiab loj hlob. Nyob rau lub sijhawm no, lub hardness ntawm pwm yuav raug txo rau qee qhov, thiab lub toughness yuav zoo dua ntxiv. Txoj kev tempering no yog tsim rau qee cov pwm uas yuav tsum muaj qhov sib npaug ntawm qhov tawv thiab tawv, xws li qee qhov txias - extrusion pwm nrog cov duab nyuaj. Thaum lub sij hawm txias - extrusion txheej txheem, cov pwm yuav tsum muaj ib tug tej yam hardness los xyuas kom meej qhov tseeb dimension thiab hnav tsis kam, thiab kuj yuav tsum tau txaus toughness los dais lub extrusion quab yuam thiab tiv thaiv cov pwm los ntawm cracking.

 

Siab - Kub Kub (550 - 650 degree): Kub-kub tempering yuav txo qhov hardness ntawm high-carbon steel pwm thiab zoo heev txhim kho lub toughness. Ntawm qhov kub no, carbides yuav tag nrho aggregate thiab spheroidize, thiab lub microstructure ntawm pwm yuav zoo ib yam thiab ruaj khov. Txoj kev tempering no feem ntau yog siv rau kub - ua haujlwm pwm, xws li tuag - casting pwm thiab kub - forging pwm. Cov pwm no yuav tsum tau dais qhov kub thiab txias thiab cuam tshuam loj heev thaum lub sijhawm ua haujlwm. Tom qab qhov kub thiab txias tempering, cov pwm tuaj yeem tiv taus thermal qaug zog thiab cuam tshuam kev qaug zog thiab txuas ntxiv lub neej kev pab cuam ntawm pwm.

 

 

 

 

 

 

 

Qib	(wt%) Chemical Composition (wt%)
	C	Si	Mi	P	S	Cr	Ni	Mo	Cu	Raws li	Sb
NK E70	Tsawg dua lossis sib npaug rau 0.15	Tsawg dua lossis sib npaug rau 0.15	0.30-0.60	Tsawg dua lossis sib npaug rau 0.010	Tsawg dua lossis sib npaug rau 0.010	2.0-2.5	Tsawg dua lossis sib npaug rau 0.20	0.90-1.10	Tsawg dua lossis sib npaug rau 0.20	Tsawg dua lossis sib npaug rau 0.016	Tsawg dua lossis sib npaug rau 0.003

 

 

 

 

 

 

Vim li cas thiaj xaiv peb?
Peb txaus siab rau peb lub peev xwm los muab cov kev cai daws teeb meem rau peb cov neeg siv khoom cov kev xav tau tshwj xeeb.
Peb txheeb xyuas thiab sib piv cov khoom dhau los thiab cov xwm txheej tam sim no ntawm peb NK E70 Steel Phaj, thiab tsim cov kev qhia tshiab thiab cov txheej txheem.
Peb cov neeg siv khoom ntseeg peb kom xa cov khoom zoo Cold-rolled Steel khoom raws sij hawm thiab ntawm pob nyiaj siv.
Peb nruj me ntsis siv cov kev pab cuam sov so thiab kev xav tom qab muag, ua raws li kev txhim kho kev ua haujlwm zoo.
Peb muab ntau hom Cold-rolled Steel khoom kom tau raws li cov neeg siv khoom xav tau.
Peb ua raws li cov neeg siv khoom-centric thiab hom-taw qhia kev lag luam lub tswv yim, thiab txuas ntxiv muab cov neeg siv khoom lag luam txhim khu kev qha thiab zoo heev thiab cov kev pabcuam.
Peb lub Hoobkas tau cog lus los txhawb nqa cov qauv siab tshaj plaws ntawm kev nyab xeeb thiab zoo.
Txhua tus neeg ua haujlwm ntawm peb lub tuam txhab thiab txhua lub tuam haujlwm ua haujlwm ua ke los ua ke kev tswj hwm kev lag luam, kev tshaj lij thev naus laus zis, ntau txoj hauv kev txheeb cais thiab kev kawm ideological.
Peb cov khoom siv Cold-rolled Steel paub txog lawv cov kav ntev thiab kev ntseeg tau.
Relying ntawm superior tej yam kev mob thiab muaj zog zoo ntawm cov khoom loj, peb muaj peev xwm ua tau raws li qhov sib txawv ntawm peb cov neeg muas zaub.

Cim npe nrov: nk e70 steel phaj, Tuam Tshoj nk e70 steel phaj lwm tus neeg, hoobkas