Preheating thiab Post-weld Thaum tshav kub kub kho

 

Kev kho cua sov: Rau cov phaj tuab lossis thaum vuam NV A steel daim hlau nyob rau hauv qhov chaw qis qis, yuav tsum tau preheating. Lub preheating kub feem ntau yog nyob nruab nrab ntawm 100 - 150 degree . Cov phaj tuab dissipate cua sov sai sai, thiab cov cua txias thaum lub sij hawm vuam kuj yog ceev, yog li nws yog ib qho yooj yim los tsim hardened lug thiab tawg. Ib puag ncig uas tsis muaj qhov kub thiab txias yuav ua kom cov cua txias ntawm cov vuam thiab cov cua sov ua kom sov, ua rau muaj kev pheej hmoo ntawm vuam tsis xws luag. Preheating tuaj yeem txo qhov txias ntawm qhov sib koom ua ke, txo qhov muaj peev xwm ntawm kev tsim cov txheej txheem hardened nyob rau hauv cheeb tsam kub-cuam tshuam, yog li txhim kho weldability thiab tiv thaiv qhov tshwm sim ntawm vuam tawg. Cov cuab yeej siv hluav taws xob cua sov lossis cov nplaim hluav taws kub tuaj yeem siv rau preheating, thiab nws yog ib qho tsim nyog los xyuas kom meej tias qhov kub thiab txias yog sib npaug sib npaug thoob plaws hauv qhov chaw vuam ntawm cov hlau phaj.

 

Tom qab-weld Thaum tshav kub kub kho: Thaum lub welded qauv bears ib tug loj kev nyuaj siab los yog thaum lub siab toughness ntawm lub welded sib koom yuav tsum tau, tom qab-weld kev kho cua sov yog xav tau. Piv txwv li, nyob rau hauv cov txheej txheem tseem ceeb ntawm cov nkoj los yog hauv cov qauv welded raug hloov pauv, kev kho cua sov tom qab vuam tuaj yeem tshem tawm qhov kev ntxhov siab ntawm cov welding thiab txhim kho cov qauv thiab kev ua haujlwm ntawm kev sib koom ua ke. Piv txwv li, tempering kev kho mob tuaj yeem txhim kho cov txheej txheem nyuaj thiab nkig nyob rau hauv thaj tsam ntawm cov cua sov uas cuam tshuam rau vuam thiab txhim kho lub toughness ntawm kev sib koom ua ke. Feem ntau, qhov kub thiab txias yog nyob nruab nrab ntawm 550 - 650 degree , thiab lub sij hawm tuav tau txiav txim siab raws li cov yam ntxwv xws li lub thickness ntawm steel phaj. Feem ntau, rau txhua 25 hli tuab, lub sijhawm tuav yog 1 - 2 teev. Tus nqi cua sov thiab tus nqi cua txias kuj yuav tsum tau tswj kom muaj nuj nqis kom tsis txhob muaj kev kub ntxhov tshiab.

 

 

 

 

 

 

 

 

NV Lub Zog Muaj Zog Tshuaj Muaj Zog
Qib	Cov ntsiab lus Max (%)
	C	Si	Mn	P	S	Al	N
NV A	0.21	0.05	2.5 x C	0.035	0.035	-
	Nb	V	Ti	Cu	Cr	Ni	Mo

 

 

Ua kom muaj kev huv huv thiab zoo los ua ke zoo ntawm Vuam Joint

 

Kev Tswj Xyuas Kev Tswj Xyuas Zoo: Kev sib dhos zoo yog qhov tseem ceeb hauv kev txhim kho weldability. Qhov sib txawv ntawm qhov sib txuas ntawm vuam yuav tsum ua tau raws li qhov yuav tsum tau ua ntawm cov txheej txheem vuam. Yog tias qhov sib txawv loj dhau lawm, nws yuav ua rau muaj kev sib tsoo ntau dhau ntawm cov vuam thiab qhov tshwm sim ntawm vuam tsis xws luag. Yog tias qhov sib txawv me dhau, nws yuav ua rau muaj teeb meem xws li tsis muaj fusion. Nyob rau tib lub sijhawm, nws yog ib qho tsim nyog los xyuas kom meej qhov kev sib raug zoo ntawm cov welded qhov chaw kom tsis txhob muaj kev ntxhov siab thaum lub sij hawm vuam, uas yuav cuam tshuam rau vuam zoo thiab weldability.

 

 

 

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 NV A 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.
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: nv steel phaj, Tuam Tshoj nv steel phaj lwm tus neeg, hoobkas