Cov nyhuv ntawm lub zog ntawm Weldability - Chemical Composition thiab Carbon Equivalent

Lub zog ntawm LR FH42 steel daim hlau muaj feem xyuam rau lawv cov tshuaj muaj pes tsawg leeg. Siab dua - lub zog hlau zoo li LR FH42 feem ntau muaj cov ntsiab lus tshwj xeeb alloying. Piv txwv li, lawv yuav muaj cov ntsiab lus carbon (C) ntau dua thiab cov ntsiab lus alloying xws li manganese (Mn), niobium (Nb), lossis vanadium (V).

 

Cov pa roj carbon sib npaug (CE) yog qhov tseem ceeb hauv kev txiav txim siab weldability. Cov mis rau kev xam cov carbon sib npaug yuav txawv, tab sis feem ntau, nws yuav siv sij hawm rau hauv tus account cov ntsiab lus ntawm carbon thiab lwm yam alloying ntsiab. Qhov sib npaug ntawm cov pa roj carbon ntau dua hauv cov hlau muaj zog tuaj yeem ua rau txo qis hauv weldability. Nyob rau hauv rooj plaub ntawm LR FH42 steel, yog tias cov pa roj carbon sib npaug siab dhau lawm, nws tuaj yeem ua rau muaj kev cuam tshuam rau qhov txias txias thaum vuam.

 

 

 

 

 

 

LR/FH42 ntxiv muaj zog Chemical Composition
Qib	Cov ntsiab lus Max (%)
	C	Si	Mn	P	S	Al	N
LR/FH42	0.18	0.55	1.60	0.025	0.025	0.015	0.020
	Nb	V	Ti	Cu	Cr	Ni	Mo
	0.02-0.05	0.03-0.10	0.02

 

 

 

Cov nyhuv ntawm lub zog ntawm Weldability - Thermal Stress thiab Distortion

Lub zog siab dua ntawm LR FH42 steel daim hlau txhais tau tias lawv muaj kev tiv thaiv ntau dua rau deformation. Thaum lub sij hawm welding, lub tshav kub input ua rau cov hlau nthuav thiab cog lus. Hauv cov hlau muaj zog dua, cov thermal stress generated vim qhov nthuav dav thiab contraction yog siab dua vim lawv cov modulus ntau dua elasticity.

 

Qhov no tuaj yeem ua rau muaj kev pheej hmoo ntau dua ntawm kev cuam tshuam thiab kev ntxhov siab nyob hauv cov qauv welded. Piv txwv li, yog tias qhov loj-scale LR FH42 steel phaj yog welded yam tsis muaj pre-heating thiab post-welding kev kho mob, qhov sib txawv ntawm thermal expansion ntawm cov weld thiab cov khoom siv hauv paus tuaj yeem ua rau warping lossis dabtsi yog khoov ntawm lub phaj. Lub siab residual kev nyuaj siab kuj tuaj yeem txo qhov qaug zog lub neej ntawm cov qauv welded thiab ua rau kom muaj kev ntxhov siab - corrosion cracking.

 

 

 

 

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 LR FH42 Steel Phaj, thiab tsim cov txheej txheem 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: lr fh42 steel phaj, Tuam Tshoj lr fh42 steel phaj lwm tus neeg, hoobkas