Txhim kho Hydrogen Embrittlement Resistance

 

Txoj Cai: Qhov sib txawv thiab sib sau ua ke ntawm hydrogen atoms hauv cov hlau yuav ua rau hydrogen embrittlement phenomenon. Lub microstructure tsis zoo tuaj yeem txo cov ntxiab ntawm hydrogen atoms hauv cov khoom siv (xws li cov ciam teb, thaj tsam theem, dislocations, thiab lwm yam), ua rau txoj kev diffusion ntawm hydrogen atoms tsis tu ncua, yog li txo qhov muaj peev xwm ntawm hydrogen atoms aggregating nyob rau hauv cov cheeb tsam. tsim hydrogen molecules thiab ua rau cov khoom embrittlement. Piv txwv li, nyob rau hauv kev lag luam petrochemical, nyob rau hauv ib co pipelines uas thauj hydrogen - muaj cov xov xwm, yog hais tias lub microstructure ntawm cov hlau tsis yog - uniform, hydrogen atoms nquag mus aggregate nyob rau hauv lub zos cov cheeb tsam, ua rau cov kav dej nkig thiab ua rau muaj kev pheej hmoo ntawm rupture. .

 

Daim ntawv thov Scenario: Hauv cov khoom siv xws li hydrogenation reactors thiab hydrogen - uas muaj - nruab nrab - cov kav dej thauj mus los, hydrogen embrittlement kuj tseem ceeb tshwj xeeb. Cov hlau nrog cov qauv microstructure zoo tuaj yeem tiv thaiv hydrogen embrittlement thiab xyuas kom muaj kev nyab xeeb ntawm cov khoom siv. Piv txwv li, nyob rau hauv kev tsim lub tog raj kheej ntawm hydrogenation reactor, siv hlau nrog ib tug niaj hnub microstructure yuav ua rau kom cov hydrogen embrittlement tsis kam ntawm cov cuab yeej los ntawm li 40% - 60% nyob rau hauv ib puag ncig uas muaj siab hydrogen.

 

 

 

 

KR/R F43 siab zog tshuaj muaj pes tsawg leeg
Qib	Cov ntsiab lus Max (%)
	C	Si	Mn	P	S	Al	N
KR/R F43	0.18	0.55	1.60	0.025	0.025	-	0.020
	Nb	V	Ti	Cu	Cr	Ni	Mo
	-	-	-	-	-	-	-

 

 

 

Optimizing vuam kev ua tau zoo

 

Txoj Cai: Ib qho kev sib txuam microstructure pab tswj kev ruaj ntseg ntawm cov khoom siv thaum lub sij hawm vuam txheej txheem. Thaum lub sij hawm welding, lub tshav kub - cuam tshuam cheeb tsam nyob ze ntawm lub weld yuav undergo microstructure hloov. Yog hais tias tus thawj microstructure ntawm cov hlau tsis sib xws, lub microstructure hloov nyob rau hauv lub tshav kub - cuam tshuam cheeb tsam yog kuj me me, thiab nws tsis yog yooj yim rau muaj vuam tsis xws luag xws li lub zos hardening thiab embrittlement. Piv txwv li, thaum lub sij hawm welding txheej txheem ntawm lub tsev steel lug, cov hlau nrog ib tug niaj hnub microstructure yuav ua rau lub zog thiab toughness ntawm lub welded sib koom ua ke los ze zog mus rau lub hauv paus khoom, txhim kho qhov zoo ntawm cov welded sib koom.

 

Daim ntawv thov Scenario: Hauv ntau qhov kev lag luam uas xav tau vuam, xws li kev tsim cov nkoj thiab cov raj xa dej, qhov vuam kev ua tau zoo ntawm cov hlau yog qhov tseem ceeb. Kev siv cov hlau nrog cov txheej txheem microstructure tuaj yeem txo qhov nyuaj ntawm vuam, txo cov vuam tsis xws luag, thiab txhim kho kev ntseeg tau ntawm tag nrho cov qauv. Piv txwv li, nyob rau hauv lub hull welding ntawm loj - scale ships, cov hlau nrog ib tug niaj hnub microstructure yuav ua rau lub zog ntawm lub welded hull qauv zoo li qub thiab txo kev nyab xeeb kev puas tsuaj los ntawm welding zoo teeb meem.

 

 

 

 

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 cov KR F43 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 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, 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: kr f43 steel phaj, Tuam Tshoj kr f43 steel phaj lwm tus neeg, hoobkas