Cov txheej txheem ib txwm ntawm stainless hlau luj tshib ntau dua yog lub laub-dabtsi yog khoov txheej txheem.
Kev sib tsoo khoov yog ib txoj kev sib txuam ntawm kev khoov khoov steel hlau yeeb nkab fittings, feem ntau yog siv rau dabtsi yog khoov lauj tshib. Raws li cov yam ntxwv ntawm cov txheej txheem, nws tuaj yeem faib ua txias txias thiab mandrel kub dabtsi yog khoov.
1. Txias laub khoov
Siv cov cuab yeej siv khoov los thawb cov yeeb nkab khoov ntawm qhov tsis zoo tib yam hydraulic xovxwm lossis crank xovxwm, cov hlau tsis xeb ncaj ncaj ntsaws ntsaws yog nias rau hauv cov pwm nrog cov kab noj hniav ntawm qhov kub ntawm ib txwm kub, yog li tsim ib lub luj tshib hlau.
Lub laub txias laub txias yog qhov tsim nyog rau kav hlau lauj tshib nrog lub vojvoog me. Qhov tsawg kawg nkaus ntu khoov vojvoog r / d ≈ 1.3, lub ellipse ntawm lub luj tshib ntu yog qhov me me (≤3% -5%), thiab sab nraud lub tog raj phab ntsa ua tau thinner (≤ 9%) tuaj yeem khoov tau; lub luj tshib dabtsi yog khoov cuab yeej muaj cov qauv yooj yim, tsis tas yuav siv cov cuab yeej tshwj xeeb, thiab muaj kev ua haujlwm siab. Txawm li cas los xij, feem ntau yuav tsum tau hais tias cov txheeb ze tuab ntawm cov xaim hlau yeeb t / d ≥ 0.06, txwv tsis pub, cov yeeb yaj kiab kab yeeb yaj kiab feem ntau yuav poob kev ruaj ntseg vim yog qhov txhav tsis zoo, ua rau sab hauv ntawm lub luj tshib wrinkle lossis ntswj.
2. Kub pas nrig khoov
Lub mandrel hom kub laub khoov yeeb nkab yog tsim ntawm lub tshuab thawb tshwj xeeb, uas tau thawb los ntawm lub tshuab raj lub zog hauv qab ntawm axial thawb thiab kho lub zog thaum muab rhaub, kom lub raj xa hluav taws xob ua cov pa hluav taws xob sib xyaw thiab axial khoov deformation, yog li txo qhov taub ntawm yeeb nkab Lub tshuab billet raug thawb mus rau hauv lub taub loj dua.
