Cov kauv vuam steel yeeb nkab yog hais txog cov yeeb nkab steel nrog cov yeeb nkab steel nrog cov hlua khi nrog cov hlua hlau los yog steel phaj khoov mus rau ib puag ncig, square. Raws li txoj kev vuam, nws tuaj yeem muab faib ua arc welded kav, high-frequency lossis low-frequency resistance welded kav, roj vuam kav, rauv vuam kav, thiab Bondi kav. Raws li cov duab ntawm cov welded, nws tuaj yeem muab faib ua ncaj seam welded kav thiab kauv welded kav. Vuam steel kav yog siv rau roj drilling thiab machinery manufacturing. Lub tshuab hluav taws xob vuam yeeb nkab tuaj yeem siv tau los ua cov kav dej roj, thiab lwm yam, thiab cov kav dej loj-txoj kab ncaj nraim welded kav yog siv rau cov roj thiab roj tsheb thauj mus los, thiab lwm yam; Kauv welded kav yog siv rau roj thiab roj tsheb thauj mus los, cov yeeb nkab piles, thiab choj pier. Vuam steel kav yog qis dua seamless steel kav thiab siab ntau lawm efficiency.
Thaum lub zog cov yam ntxwv ntawm cov yeeb nkab steel raug cuam tshuam los ntawm lub siab sab hauv, lawv feem ntau tsim ob lub ntsiab kev ntxhov siab ntawm lub raj phab ntsa, xws li 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.
Raws li cov yam ntxwv saum toj no, peb tuaj yeem pom:
A. Thaum cov kauv cov yeeb nkab yog blasting, vim yog qhov kev ntxhov siab me me thiab cov khoom sib txuas ntawm cov welds, qhov chaw nres nkoj blasting feem ntau tsis yog los ntawm cov kauv vuam seam, thiab nws txoj kev nyab xeeb yog siab dua qhov ncaj seam welded yeeb nkab.
B. Thaum cov kev tsis sib xws nyob ze ntawm cov kauv welds, vim tias cov kauv welds tsis tshua muaj kev ntxhov siab, qhov kev pheej hmoo ntawm nws qhov nthuav dav tsis loj npaum li qhov ncaj welds.
C. Vim tias qhov kev ntxhov siab radial yog qhov kev ntxhov siab tshaj plaws uas muaj nyob rau ntawm cov yeeb nkab steel, qhov vuam yog nyob rau hauv cov kev taw qhia ntawm txoj kev nyuaj siab ntsug kom dais qhov siab tshaj plaws load. Ntawd yog, cov khoom thauj uas tau ua hauv cov seams ncaj yog qhov loj tshaj plaws.
