Nyias-walled luj tshib nyob rau hauv stainless hlau yeeb nkab fittings yog ib tug ntau yam yeeb nkab kev twb kev txuas tivthaiv, feem ntau huv huv qib, thiab zawj feem ntau txais ib tug ca lub qhov ncauj, uas muaj zoo heev corrosion kuj thiab siab kuj. Nws yog dav siv nyob rau hauv pipeline systems hauv tshuaj, roj av, natural gas, papermaking thiab lwm yam lag luam. Cov yam ntxwv khoov ntawm stainless hlau nyias-walled luj tshib yuav qhia hauv qab no.
Deformation yam ntxwv ntawm nyias-walled luj tshib thaum khoov:
Lub deformation ntawm stainless hlau luj tshib thaum khoov yog mas manifested nyob rau hauv cov nram qab no yam:
Ua ntej, sab hauv thiab sab nraud txoj kab uas hla deformations tsim thaum lub sij hawm khoov yog me me. Vim nws nyias-walled qauv, lub puab thiab sab diameters ntawm stainless hlau nyias-walled luj tshib yuav hloov thaum lub sij hawm khoov txheej txheem. Nws tau raug txheeb xyuas nyob rau hauv kev xyaum hais tias lub puab txoj kab uas hla deformation tus nqi ntawm stainless hlau nyias-walled luj tshib feem ntau yog tswj nyob rau hauv 2%, thiab lub sab nraud txoj kab uas hla deformation tus nqi feem ntau yog tswj nyob rau hauv 4%.
Qhov thib ob, qhov kev hloov pauv ntawm ntu ntu thaum lub sijhawm khoov yog me me. Stainless hlau nyias-walled luj tshib yog raug rau tensile thiab compressive quab yuam thaum lub sij hawm khoov txheej txheem, ua rau lawv cov cross-sectional zoo hloov. Txawm li cas los xij, vim qhov ua tau zoo ntawm nws cov khoom siv, cov duab sib dhos ntawm stainless hlau nyias-walled luj tshib hloov me ntsis, thiab tuaj yeem tswj tau cov kua dej zoo.
Lub phab ntsa thickness hloov thaum lub sij hawm khoov txheej txheem yog me me. Cov phab ntsa thickness ntawm stainless hlau nyias-phab ntsa luj tshib yuav hloov thaum lub sij hawm bending txheej txheem, tab sis qhov ntau ntawm kev hloov yog me me. Tom qab cov txheej txheem tswj, phab ntsa thickness hloov ntawm stainless hlau nyias-phab ntsa luj tshib feem ntau yog tswj nyob rau hauv 10%.
Kev faib tawm kev ntxhov siab thaum khoov:
Thaum lub sij hawm khoov, cov phab ntsa ntawm stainless hlau nyias-phab ntsa lub luj tshib yog raug kev nyuaj siab, thiab nws cov kev ntxhov siab faib cov yam ntxwv yog raws li nram no:
Ua ntej, qhov kev ntxhov siab hauv cheeb tsam tsim tawm thaum lub sijhawm khoov yog 1.5 npaug ntawm qhov kev ncua deb ntawm lub vojvoog dabtsi yog khoov. Qhov loj dua qhov khoov vojvoog ntawm stainless hlau nyias-phab ntsa lub luj tshib, qhov me dua qhov kev ncua deb ntawm thaj tsam kev ntxhov siab thiab lub vojvoog khoov.
Qhov thib ob, qhov kev ntxhov siab faib thaum lub sij hawm khoov yog symmetrical. Thaum lub sij hawm khoov cov txheej txheem, cov kev ntxhov siab faib ntawm lub puab thiab sab diameters ntawm stainless hlau nyias-wall luj tshib yog symmetrical. Qhov no symmetrical feature tuaj yeem ua kom muaj kev ruaj ntseg ntawm cov kav dej thiab cov dej ntws zoo ntawm cov dej channel.
Qhov kev hloov pauv kev ntxhov siab tsim tawm thaum lub sijhawm khoov yog qhov loj. Thaum lub sij hawm khoov txoj kev, stainless hlau nyias-wall luj tshib muaj ib tug loj kev ntxhov siab hloov tus nqi vim lub tensile thiab compressive rog. Txhawm rau kom muaj kev nyab xeeb ntawm kev ua haujlwm ntawm cov kav dej, qhov kev ntxhov siab thaum lub sij hawm khoov yuav tsum tau suav tag nrho thiab tswj.
