Qhov sib txawv tseem ceeb tshaj plaws ntawm lawv yog lub luj tshib luv dua li khoov, R = 1D rau 2D yog lub luj tshib, Ntau dua 2D yog khoov. Cov Yeeb Nkab Luj Tshib thiab Cov Yeeb Nkab Khoov yog ob qho tib si cov yeeb nkab sib txuas cov khoom lag luam uas tau siv los hloov cov kev taw qhia ntws hauv cov kav dej. Qee lub sij hawm lawv sib pauv tau, tab sis tsis zoo ib yam.
Hlau-Luj Tshib-45-Degree-90-Degree
Cov yeeb nkab khoov txhais tau tias yog cov yeeb nkab uas tau khoov rau qee lub kaum sab xis kom koom nrog ob lub raj xa dej. lawv tuaj yeem yuav luag txhua qhov khoov vojvoog thiab cov ces kaum. Cov yeeb nkab khoov feem ntau tsim tawm ntawm qhov chaw kom tau raws li qhov xav tau tshwj xeeb los ntawm kub induction khoov lossis khoov txias. Lub luj tshib txhais tau tias cov yeeb nkab tshwj xeeb khoov raws li tus qauv ANSI/ASME B16.9 (lossis EN 10253, lossis lwm cov qauv siv yeeb nkab). Feem ntau cov luj tshib muaj lub vojvoog ntawm 1.5D lossis 1D (Ntawm no D txhais tau tias yog lub cheeb ntawm qhov khoov no), uas yog hu ua "Long Radius elbow (LR elbow)" lossis "Short Radius elbow (SR elbow)". thiab lub kaum ntawm lub luj tshib yog 45 degree lossis 90 degree feem ntau, qee lub sijhawm kuj tseem muaj cov qauv tsim lub luj tshib uas yog 30 degree, 60 degree, 180 degree lossis lwm yam kaum.
Yeeb Nkab-Khoov
Cov yeeb nkab khoov yuav tsum yog raws li tus txheej txheem ntawm ANSI/ASME B16.49 uas tsis tau hais txog qhov khoov vojvoog thiab lub kaum sab xis, cov yeeb nkab khoov ib puag ncig yog 2.5D, 3D, 5D, 7D lossis 8D, tab sis nws tuaj yeem yog lwm yam dabtsi yog khoov. lub vojvoog raws li qhov xav tau tsim, thiab khoov lub kaum sab xis tuaj yeem yog qib twg, 5, 10, 15, 90 degree lossis lwm yam. Tib neeg hais tias "Txhua txoj kev khoov yog lub luj tshib tab sis txhua lub luj tshib tsis khoov", nws tsis yog qhov tseeb. Qhov tseeb "Txhua lub luj tshib yog cov yeeb nkab khoov tab sis tsis yog txhua qhov khoov yog lub luj tshib" yog qhov tsim nyog dua.
Sijhawm Tshaj Tawm: Jul-14-2021