1. Metallurgical kev ua tau zoo ntawm cov ntaub ntawv
Qhov ncaj seam faus arc welded yeeb nkab yog tsim los ntawm steel daim hlau, thiab cov kauv welded yeeb nkab yog tsim nrog kub-dov coils. Cov txheej txheem dov ntawm kub-kuav los tiag steel chav tsev muaj ntau qhov zoo thiab muaj peev xwm kom tau txais cov cuab yeej siv hlau rau kev tsim cov raj xa dej zoo. Piv txwv li, lub tshuab ua dej txias tau nruab rau ntawm lub rooj tso zis kom ceev cov cua txias, uas tso cai rau kev siv cov khoom siv qis qis kom ua tiav cov qib tshwj xeeb muaj zog thiab tsis tshua muaj kub toughness, yog li txhim kho cov weldability ntawm hlau.
Cov ntsiab lus ntawm cov hlau (cov pa roj carbon ntau) ntawm cov dov phaj feem ntau qis dua cov hlau phaj ntawm cov qib zoo sib xws, uas kuj tseem txhim kho qhov weldability ntawm cov kauv welded yeeb nkab. Vim hais tias cov kev taw qhia ntawm dov dov ntawm lub kauv raj tsis yog cov kev taw qhia ntawm ntsug steel yeeb nkab axis (nws cov tshuaj nyob ntawm lub kauv lub kaum sab xis ntawm cov yeeb nkab steel), thiab cov hlau phaj dov kev taw qhia ntawm cov yeeb nkab steel ncaj yog perpendicular rau. steel yeeb nkab axis. Qee zaus zoo dua cov kav hlau ncaj ncaj.
2. Vuam txheej txheem
Nyob rau hauv cov nqe lus ntawm welding txheej txheem, welding txoj kev ntawm kauv vuam yeeb nkab thiab ncaj seam steel yeeb nkab yog zoo ib yam, tab sis cov ncaj seam welded kav inevitably muaj ntau b -welding seams. Yog li ntawd Cov kev ntxhov siab yog loj, thiab cov hlau weld feem ntau nyob rau hauv peb txoj kev ntxhov siab, ua rau muaj kev tawg.
Tsis tas li ntawd, raws li cov txheej txheem ntawm faus arc vuam, txhua qhov vuam seam yuav tsum tau txuas rau arc thiab extinguished arc. Ntau qhov vuam tsis raug.
3. lub zog yam ntxwv
Thaum lub siab sab hauv, lub raj feem ntau ua rau ob lub ntsiab kev ntxhov siab ntawm lub raj phab ntsa, uas yog lub radial stress Δy thiab axial stress Δx. Synthetic stress Δ=Δy (L/4SIN2 +COS2) yog hluavtaws ntawm qhov vuam.
Lub kaum sab xis ntawm cov kauv welded weld feem ntau yog 50-75 degrees, yog li qhov kev ntxhov siab hluavtaws ntawm cov kauv vuam yog 60-85% ntawm qhov kev ntxhov siab tseem ceeb ntawm txoj hlua ncaj nraim welded yeeb nkab. Nyob rau hauv tib lub zog ua hauj lwm, lub kauv raj ntawm tib txoj kab uas hla yuav txo tau piv rau cov phab ntsa thickness ntawm cov ncaj welded yeeb nkab.
