Qhov sib txawv tseem ceeb ntawm lub luj tshib thiab cov kav dej khoov yog qhov sib txawv ntawm "lub taub hau" thiab "cov yeeb nkab", thiab tseem muaj qhov sib txawv tseem ceeb hauv kev tsim khoom.
Lub luj tshib yog ib qho kev sib txuas cov yeeb nkab haum rau hauv cov kav dej, siv rau kev sib txuas cov kav dej ntawm qhov khoov thiab hloov cov kev taw qhia ntawm cov kav dej.
Siv los txuas ob lub kav dej nrog tib lossis sib txawv nominal diameters, tso cai rau lub raj xa mus ua 90 degree, 45 degree, 180 degree, thiab ntau yam degrees.
Hauv qab no yog cov lus qhia luv luv rau qhov sib txawv ntawm kev tsim khoom ntawm lub luj tshib thiab cov kav dej khoov:
1. Lub luj tshib yog luv luv piv rau cov kav dej nkhaus. R=1 mus rau 2 zaug yog lub luj tshib, thiab ntau qhov loj dua yog hu ua cov yeeb nkab khoov.
2. Cov kav dej txias tuaj yeem khoov tau siv cov kav dej ncaj uas twb muaj lawm uas siv lub tshuab ua yeeb nkab dabtsi yog khoov, thiab tuaj yeem ua tiav hauv ib qho mus yam tsis tas yuav tsum muaj kev kho mob thib ob los tiv thaiv corrosion. Tab sis lub luj tshib yuav tsum tau kho los ntawm cov chaw tsim khoom, yuav tsum tau kho los tiv thaiv corrosion, thiab lub voj voog xaj yuav ntev.
3. Tus nqi ntawm lub luj tshib yog siab dua li ntawm cov kav dej khoov, tab sis lawv cov nqi siv tau ntau dua. Cov kav dej khoov tsis muaj kev tiv thaiv corrosion yog qhov ua rau puas tsuaj, tab sis vim lawv tus nqi qis, lawv tau siv dav hauv qee qhov haujlwm uas tsis tshua muaj. Yog li thaum xaiv ntawm lub luj tshib thiab khoov cov kav dej vim lawv qhov kev ua tau zoo thiab cov nqi sib txawv, nws yog ib qho tseem ceeb uas yuav tau xyuam xim.
