1.Dab tsi yog qhov zoo thiab qhov tsis zoo ntawm argon-helium sib tov?
Qhov zoo tshaj plaws universal thiab zoo sib npaug yog ua tiav los ntawm argon muab kev ruaj ntseg thiab kev tiv thaiv, thaum helium nce melting qhov tob, ceev, thiab txhim kho fluidity ntawm lub pas dej molten.
Nws muaj lub qhov rais txheej txheem dav, vuam ceev ceev, zoo weld tsim, thiab txhim khu kev qha tiv thaiv.
Tus nqi yog siab dua li cov ntshiab argon.
2.Dab tsi yog cov yam ntxwv tseem ceeb, qhov zoo, thiab qhov tsis zoo ntawm siab -purity argon?
Qhov kev nyab xeeb tshaj plaws thiab tiv thaiv feem ntau inert gas. Ua tiav cais oxygen thiab nitrogen.
Qhov zoo: Cov hlau weld yog cov ntshiab tshaj plaws thiab muaj qhov ci ci zoo nkauj; qhov kev ua tau zoo yog ruaj khov thiab txhim khu kev qha.
Disadvantages: Lub peev xwm rau kev nkag mus thiab vuam ceev yog me ntsis qis dua li cov roj sib xyaw; tus nqi siab.
3.Qhov plaub yam tseem ceeb hauv kev txiav txim siab xaiv cov khoom yog dab tsi?
Plaub Yam Tseem Ceeb hauv Kev Txiav Txim Hlau Hlau: Qib Qib thiab Cov Txheej Txheem (Kev Txiav Txim Siab)
Plain Carbon Steel (SPCC / SECC, thiab lwm yam): Kev tiv thaiv nruj ntawm nitrogen thiab oxygen nkag yog qhov tseem ceeb. Siab -purity argon los yog Ar-Nws cov khoom sib xyaw yog nyiam.
Siab -Strength Steel/Advanced High-Strength Steel: Sensitive rau thermal cycling. Ar-Nws cov khoom sib tov muaj kev tswj xyuas lub pas dej ua ke zoo dua thiab cov cua txias, ua rau lawv muaj kev nyab xeeb dua.
Interstitial Atom-Free Steel (IF Steel): Siab -purity argon tuaj yeem siv tau. Txhawm rau txo cov nqi, Ar+ (<3%) N₂ mixtures can be explored, but rigorous bending, cupping, and aging tests must be conducted to verify the absence of embrittlement risk.
Vuam txheej txheem yuav tsum tau
Ceev: Cov vuam nrawm dua yuav tsum muaj helium ntau ntxiv kom muaj zog tawm tswv yim thiab ruaj khov rau lub pas dej molten. Ar-Nws cov khoom sib xyaw yog nyiam rau kev kub siab - vuam ceev.
Phaj Thickness: Cov phaj tuab yuav tsum tau nkag mus tob dua. Ua kom cov helium feem ntau pab ua kom nkag tau zoo dua.
Tom ntej: Yog hais tias lub vuam yuav tsum tau tiv taus deformation loj heev (xws li nyob rau hauv cov khoom siv hauv tsheb), siab - purity inert gases yuav tsum tau siv los xyuas kom meej qhov weld toughness sib tw ntawm cov khoom hauv paus.
Weld Quality Indicators
Qhov tsos: Yuav tsum tau ci, silvery -dawb tiav; siab -purity argon- raws li roj yuav tsum tau siv.
Mechanical Properties: Yuav tsum tsim nyog weld lub zog thiab elongation; brittle puas vim kev tiv thaiv tsis txaus yuav tsum tau tiv thaiv.
Kev tswj tsis raug: Tiv thaiv porosity, undercut, thiab humps. Cov roj tsim nyog optimizes molten pas dej ua ke ntws thiab solidification.
Kev txiav txim siab txog tus nqi
Tag Nrho Cov Tswv Cuab (TCO) Xav: Tsis txhob sib piv cov nqi roj av xwb. Cheap gases yuav ua rau:
Tsawg vuam ceev → poob ntawm cov khoom tsim tawm.
Nce strip breakage tus nqi → Downtime poob thiab seem.
Cov txheej txheem vuam zoo → Cov neeg siv khoom thov lossis kev ua haujlwm tom qab tawg.
Txawm hais tias Ar-Nws cov roj sib xyaw muaj tus nqi siab dua, lawv cov kev kub ceev thiab kev ruaj ntseg feem ntau ua rau qis tshaj tag nrho cov nqi tsim khoom.
4.Dab tsi yog cov txheej txheem ua haujlwm tseem ceeb?
Gas purity: Yuav tsum yog ≥99.995% (qib 4.5N), dew point<-40°C. Impurities are the main cause of porosity and embrittlement.
Gas qhov system:
Muab ob npaug rau- tiv thaiv ib sab: Ib qho kev tiv thaiv ua ntej - cov roj thaiv kev tiv thaiv yog muab rau pem hauv ntej ntawm lub vuam teeb, thiab cov roj tiv thaiv ntev txaus yuav tsum tau muab rau tom qab rau kev tiv thaiv qeeb, npog qhov kub ntawm - txheej txheem cua txias.
Laminar flow Protection: Xyuas kom ruaj khov airflow thiab tsis txhob turbulent cua nkag. Siv lub lens roj los yog diffuser.
Tus nqi nruab nrab: Pem hauv ntej shielding roj yog feem ntau 15-25 L / min, trailing gas 10-20 L / min. Kev ntws ntau dhau cuam tshuam lub pas dej molten, thaum tsis txaus txaus muab kev tiv thaiv tsis txaus.
Kev saib xyuas cov cuab yeej: Tsis tu ncua xyuas cov pa roj, qhov thaiv ntawm lub taub hau, thiab kev puas tsuaj rau cov roj thaiv kev puas tsuaj.
5.Dab tsi yog qee qhov kev pom zoo siv rau laser vuam ntawm txias-rolled coils?
Cov kev xaiv nyiam: Ar (70% ~ 80%) + Nws (20% ~ 30%) sib tov. Qhov no muab qhov zoo tshaj plaws sib npaug ntawm qhov zoo, ceev, thiab kev ntseeg tau.
Conservative/High-kev xaiv zoo: Siab-purity argon. Haum rau cov xwm txheej nrog cov kev xav tau zoo heev tab sis tsis tshua muaj kev txwv ceev.
Tsis txhob zam kiag li: Siv cov pa roj tsawg -purity gases kom txo tau cov nqi lossis siv nitrogen yam tsis muaj pov thawj.