Cov nyhuv ntawm Thawj theem ntawm Kev laus ntawm Toughness thiab Plasticity

 

Toughness Aspect: Thaum pib ntawm cov txheej txheem kev laus rau NK / KB steel, raws li cov txheej txheem kev laus pib, cov ntsiab lus alloy pib sib sau ua ke thiab tsim cov atomic pawg lossis me me precipitates. Cov kev hloov ntawm micro-structural no yuav cuam tshuam qhov kev txav ntawm kev txav mus rau qee yam. Thaum cov khoom raug cuam tshuam rau sab nraud, dislocations muaj teeb meem hauv kev txo cov kev ntxhov siab los ntawm txoj kev plam ib txwm. Piv txwv li, thaum lub sij hawm thawj 2 - 5 teev ntawm kev laus ntawm 150 - 200 degree , vim muaj kev txwv me ntsis dislocation txav, lub toughness ntawm cov khoom yuav txo me ntsis. Txawm li cas los xij, qhov kev txo qis no feem ntau tsis pom tseeb nyob rau theem pib vim tias nag lossis daus tsis tau tsim nyob rau hauv ntau qhov ntau.

 

Plasticity Aspect: Nyob rau hauv thawj theem ntawm kev laus, plasticity kuj raug cuam tshuam zoo ib yam. Vim tias qhov kev txav ntawm kev txav mus los yog hindered, lub peev xwm deformation ntawm cov khoom thaum lub sij hawm tensile txheej txheem yuav tsis muaj zog rau qee yam. Piv txwv li, thaum kuaj tensile tau ua tiav, qhov elongation ntawm cov khoom yuav txo qis me ntsis, qhia tias plasticity ntawm cov khoom pib cuam tshuam. Txawm li cas los xij, nyob rau theem no, vim hais tias cov precipitates me me thiab txwv kom muaj nuj nqis, qhov cuam tshuam ntawm plasticity yog me me.

 

Qhov cuam tshuam ntawm theem nrab ntawm Kev Laus ntawm Toughness thiab Plasticity

 

Toughness Aspect: Thaum lub sij hawm kev laus ncua mus txog 5 - 15 teev (lub sij hawm tshwj xeeb txawv nyob ntawm seb yam xws li kub), thaum lub sij hawm nruab nrab - kub aging txheej txheem (150 - 250 degree), cov precipitates tseem loj hlob thiab maj mam ncav cuag qhov loj me. Yog hais tias qhov kev faib ntawm precipitates yog sib xws, lub toughness ntawm NK / KB steel tej zaum yuav khaws cia rau ib tug tej yam. Qhov no yog vim hais tias uniformly faib precipitates tuaj yeem tiv thaiv kev nthuav tawm ntawm micro - tawg mus rau qee yam. Piv txwv li, thaum lub sij hawm kev laus ntawm 200 - 230 degree rau li 10 teev, lub toughness ntawm cov khoom tej zaum yuav tsis mus txuas ntxiv mus raws li nyob rau hauv thawj theem. Qee zaum, yog tias qhov kev sib raug zoo ntawm cov nag lossis daus thiab cov matrix yog qhov zoo, qhov toughness tuaj yeem nce me ntsis.

 

Plasticity Aspect: Nyob rau hauv nruab nrab theem ntawm kev laus, raws li cov precipitates loj hlob, cov kev tiv thaiv rau dislocation zog ntxiv nce. Thaum lub sij hawm tensile txheej txheem, cov yas deformation muaj peev xwm ntawm cov khoom yuav raug cuam tshuam mus ntxiv. Piv txwv li, thaum kuaj tensile tau ua tiav, qhov taw tes tawm ntawm cov khoom yuav nce ntxiv, tab sis qhov elongation ntawm kev tawg yuav txo qis ntxiv, qhia tias cov khoom siv plasticity tau txo qis. Txawm li cas los xij, yog tias qhov kub thiab lub sij hawm tuaj yeem ua tau zoo - tswj kom qhov kev loj hlob thiab kev faib tawm ntawm cov precipitates nyob rau hauv lub xeev zoo tagnrho, qhov txo qis hauv plasticity tuaj yeem tswj tau rau qee yam.

 

 

 

 

NK/KB General Strength Chemical Composition
Qib	Cov ntsiab lus Max (%)
	C	Si	Mn	P	S	Al
NK/KB	0.21	0.50	2.5*C	0.035	0.035	-

 

 

 

 

 

 

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 soj ntsuam thiab sib piv cov khoom dhau los thiab cov xwm txheej tam sim no ntawm peb KB 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 txhim khu kev qha thiab cov khoom zoo 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, kev txheeb cais ntau thiab kev kawm ideological.
Peb cov khoom siv Cold-rolled Steel paub txog lawv cov kav ntev thiab kev ntseeg tau.
Kev vam khom rau qhov zoo tshaj plaws thiab muaj txiaj ntsig zoo ntawm cov khoom loj, peb muaj peev xwm ua tau raws li qhov sib txawv ntawm peb cov neeg siv khoom.

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