Ncaj seam steel kav yuav muab faib ua high-frequency ncaj seam steel kav thiab submerged arc vuam ncaj seam steel kav raws li cov txheej txheem ntau lawm. Submerged arc vuam ncaj seam steel kav tau muab faib ua UOE, RBE, JCOE steel kav, thiab lwm yam raws li lawv txoj kev sib txawv. Cov nram qab no qhia txog cov feem ntau cov high-frequency ncaj seam steel kav thiab submerged arc vuam ncaj seam steel kav Kev npaj ua ntej welding.
1. Kev ua haujlwm ntawm qhov zawj
Feem ntau ntawm cov tsis siv neeg submerged arc vuam tshuab tam sim no siv hauv kev tsim khoom yog cov cuab yeej siv vuam tshuab. Qhov vuam ceev los yog lwm yam kev ntsuas tsis tuaj yeem hloov kho txhua lub sijhawm los them nyiaj rau qhov sib txawv ntawm qhov zawj qhov loj vim qhov yuam kev ntawm lub kaum sab xis, blunt ntug lossis qhov sib txawv. Yog li ntawd, kev ntsuas yuav tsum tau ua kom ntseeg tau tias qhov zawj ua qhov loj me ua tau raws li qhov yuav tsum tau ua ntawm tus qauv thaum lub sij hawm kev npaj ntawm weld zawj, tshwj xeeb tshaj yog cov blunt ntug thiab qhov sib txawv loj yuav tsum nruj me ntsis tswj. Rau cov txheej txheem vuam tseem ceeb (xws li boilers, cov hlab ntsha siab, thiab lwm yam), qhov vuam zawj yog qhov zoo tshaj plaws los ntawm kev siv tshuab ua haujlwm. Rau cov welds uas tsis tuaj yeem ua tiav los ntawm cov cuab yeej siv tshuab, cov tshuab txiav tsis siv neeg lossis cov qauv txiav tshuab yuav tsum tau siv los ua cov zawj. Kev tuav nplaim taws txiav tsis tuaj yeem lav qhov zawj qhov yuam kev yuam kev los ntawm tus qauv tshwj tsis yog tias nws yog hauv av thiab zoo li tus tom qab txiav. Yog li ntawd, txhawm rau xyuas kom meej tias qhov zoo ntawm submerged arc vuam welds ua tau raws li qhov yuav tsum tau ua, qhov tseeb thiab qhov ua tau zoo ntawm qhov zawj yuav tsum tau lav.
2. Kev ntxuav ntawm qhov chaw welded
Qhov saum npoo ntawm lub vuam zawj kuj tseem ceeb heev rau qhov zoo ntawm qhov vuam thiab yuav tsum tsis txhob raug ignored. Yog hais tias muaj cov xeb residual, noo noo, roj, oxide nplai, thiab lwm yam nyob rau ntawm qhov zawj, nws yuav ua rau lub qhov hws hauv qhov vuam. Yog li ntawd, cov kab mob no yuav tsum tau muab tshem tawm ua ntej welding.
Ua ntej welding, nto xeb, noo noo, roj, nplai, thiab lwm yam hauv qhov zawj thiab 20mm cheeb tsam ntawm ob sab ntawm qhov zawj thiab qhov yuav tsum tau welded yuav tsum tau ntxuav. Cov nplai thiab xeb tuaj yeem raug tshem tawm los ntawm kev sib tsoo tshuab, pneumatic sib tsoo log, hlau txhuam, tua peening, thiab lwm yam, thiab roj thiab noo noo tuaj yeem qhuav los ntawm nplaim hluav taws kub.
Hauv kev vuam ntawm cov hlau tsis tshua muaj hlau thiab cov hlau tsis muaj hlau, kev ntxuav ntawm vuam zawj yog qhov tseem ceeb dua. Cov xeb thiab ya raws ntawm qhov zawj yuav tsis tsuas yog ua rau lub qhov hws, tab sis kuj tseem tuaj yeem txhawb nqa hydrogen-induced cracking, carbon nce nyob rau hauv lub vuam, thiab txawm txo cov corrosion kuj ntawm stainless hlau welded pob qij txha thiab cov neeg kho tshuab zog ntawm tsawg-alloy. steel pob qij txha. Yog li ntawd, yuav tsum tau them nyiaj tshwj xeeb.
3. Kev sib dhos ntawm vuam
Kev sib sau ua ke ntawm submerged arc vuam pob qij txha muaj kev cuam tshuam zoo rau kev vuam zoo. Qhov sib txawv thiab misalignment ntawm cov vuam pob qij txha zoo heev cuam tshuam rau kev nkag mus thiab kev tsim ntawm cov welds, thiab yuav tsum tau ua tib zoo xyuas ua ntej vuam. Lub vuam cov pob qij txha yuav tsum muaj qhov sib dhos sib dhos, qhov siab tiaj tus, thiab me me misalignment. Kev sib dhos yuam kev ntawm cov pob qij txha feem ntau yog txiav txim siab los ntawm qhov tseeb ntawm kev kos, blanking, sib sau thiab zawj ua. Yog li ntawd, kev sib dhos zoo ntawm kev sib koom ua ke tau lees paub los ntawm kev tswj xyuas nruj me ntsis ntawm kev sib txawv ntawm cov txheej txheem dhau los.
4. Kev ntxuav cov khoom siv vuam
Lub vuam hlau thiab flux siv nyob rau hauv submerged arc vuam koom nyob rau hauv lub vuam metallurgical cov tshuaj tiv thaiv thiab muaj kev cuam tshuam zoo rau cov muaj pes tsawg leeg, qauv thiab kev ua tau zoo ntawm cov hlau weld. Yog li ntawd, qhov saum npoo ntawm vuam hlau yuav tsum tau ntxuav thiab cov flux yuav tsum tau qhuav ua ntej vuam.
