Cov qauv thiab kev xeem

Ua raws:

GB / T 714-2015 (tshwj xeeb muaj pes tsawg leeg, txhua yam khoom).

GB/T 7734-2004 (Kev kuaj ultrasonic rau sab hauv tsis zoo).

Cov Kev Xeem Tseem Ceeb:

Weldability: Carbon equivalent (CEV) xam thiab hlaws - ntawm - phaj xeem.

Fracture Toughness: CTOD (Crack Tip Opening Displacement) kuaj rau cov pob qij txha tseem ceeb.

Kev Ntsuas Kev Nyuaj Siab: Accelerated cyclic loading rau simulate kaum xyoo ntawm kev pab cuam.

Vuam thiab Fabrication Guidelines

Preheating:

80–150°C for thickness >25 mm los tiv thaiv hydrogen -induced cracking.

Kev xaiv electrode:

Siv tsawg-hydrogen electrodes (piv txwv li, E5015-G lossis J757Ni) nrog lub zog sib xws thiab tawv.

Tshaj tawm -Kev kho cua sov (PWHT):

550-650℃tempering rau cov ntu tuab kom txo tau cov kev ntxhov siab seem.

Kev Tswj Xyuas Zoo:

100% radiographic los yog ultrasonic soj ntsuam rau thawj load- bearing welds.

 

 

 

 

 

 

Case Study: Wuhu Yangtze River Choj (Tuam Tshoj)

CovWuhu Yangtze River Choj(1997-2000) siv14 Mnbq(zoo ib yam li 14MnNbp) rau nws 1,052 m ncua. Cov khoom no tso cai rau cov neeg ua haujlwm nyias, sib zog ua haujlwm thaum tswj lub peev xwm thauj khoom, txo tag nrho cov hlau siv los ntawm 15% piv rau cov qib qub xws li A3 steel. Tus choj txoj kev vam meej tau qhia txog cov txiaj ntsig ntawm microalloyed steels hauv kev tsim choj niaj hnub.

Xaus

14MnNbp steel yog qhov kev xaiv txhim khu kev qha rau kev tsim kho choj, muab qhov sib npaug ntawm lub zog, weldability, thiab tus nqi- ua tau zoo. Nws ua raws li cov qauv thoob ntiaj teb, ua ke nrog kev nce qib hauv microalloying thev naus laus zis, ua rau nws tsim nyog rau ntau haiv neeg ib puag ncig. Rau kev ua tau zoo, koom tes nrog cov neeg muag khoom los xaiv cov qib zoo (piv txwv li, 14MnNbqNH rau corrosive ib puag ncig) thiab siv kev tswj xyuas kom zoo thaum tsim khoom. Thaum cov qib tshiab zoo li Q345q muab kev ua kom txias dua- huab cua kev ua haujlwm, 14MnNbp tseem yog qhov kev xaiv siv tau rau cov huab cua nruab nrab thiab tsis yog{11}} cov ntawv thov tseem ceeb.

 

 

 

 

 

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 14MnNbp Steel Rau Choj Tsev, thiab tsim cov txheej txheem tshiab thiab cov txheej txheem.
Peb cov neeg siv khoom tso siab rau peb kom xa cov khoom zoo siab -Cov Txias Txias- dov Steel raws sijhawm thiab ntawm pob nyiaj siv.
Peb nruj me ntsis ua raws li kev sov siab thiab kev xav tom qab- kev muag khoom, ua raws li kev txhim kho kev ua haujlwm zoo.
Peb muab ntau yam Cold -rolled Steel cov 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, cov txheej txheem txheeb cais ntau thiab kev kawm ideological.
Peb Cov Khoom Txias-khoov Steel yog 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: 14mnnbp steel rau choj tsev, Tuam Tshoj 14mnnbp steel rau choj tsev lwm tus neeg, hoobkas