Siv tau ib puag ncig ntawm lub tshuab ntxhua khaub ncaws: Cov txheej txheem qhia txog kev sib tw ua haujlwm thiab cov khoom siv raws li kev ua haujlwm

Txawm hais tias cov tshuab ntxhua khaub ncaws yog cov khoom siv hauv cov fasteners, lawv cov kev ua tau zoo thiab kev siv tau zoo nyob ntawm lub cev, tshuaj, thiab cov khoom siv kho tshuab ntawm ib puag ncig. Tsuas yog los ntawm kev sib raug zoo nrog lawv raws li ib puag ncig cov yam ntxwv tuaj yeem ua rau lawv cov haujlwm ntawm kev faib khoom, tiv thaiv -loo, tiv thaiv hnav, thiab kev tiv thaiv corrosion tau siv tag nrho, kom ntseeg tau ntev - lub sij hawm sib txuas.

Hauv qhov chaw qhuav hauv tsev nrog qhov kub thiab txias, cov tshuab ntxhua khaub ncaws zoo tib yam txaus rau cov kev xav tau yooj yim. Cov cheeb tsam no tsis muaj cov xov xwm corrosive tseem ceeb, qhov hloov pauv me me, thiab cov khoom thauj feem ntau yog qhov zoo li qub lossis qis dua - zaus vibrations. Siv cov pa roj carbon steel lossis galvanized carbon steel tiaj tus ntxhua khaub ncaws ua rau thaj chaw sib cuag ntawm lub taub hau taub hau lossis cov txiv ntoo, tiv thaiv kev nkag mus rau ntawm qhov chaw ua haujlwm, thiab muab cov hardness nruab nrab los tiv thaiv hnav thaum sib dhos thiab siv. Rau cov xwm txheej uas yuav tsum tau nquag disassembly thiab sib sau ua ke, nto galvanization tuaj yeem ncua kev pib xeb thiab txo qis txij nkawm.

Hauv cov av ntub lossis noo noo- muaj ib puag ncig, xws li hydraulic engineering, underground chaw, thiab sab nraum zoov, cov ntxhua khaub ncaws yuav tsum muaj kev tiv thaiv corrosion zoo. Nyob rau hauv tas li ntawd, stainless hlau gaskets (xws li 304 los yog 316) los yog carbon steel gaskets kho nrog Dacromet los yog phosphate txheej yog zoo dua. Stainless hlau gaskets ruaj khov nyob rau hauv ntug dej hiav txwv lossis chaw nres nkoj ib puag ncig nrog cov ntsiab lus chloride ion siab, thaum Dacromet coatings, vim lawv cov tshuaj ntsev zoo heev, tuaj yeem ua kom muaj kev ncaj ncees rau lub sijhawm ntev hauv huab cua sov, tiv thaiv pitting los yog corrosion ntawm lub hauv paus hlau.

High - ib puag ncig kub ua rau muaj kev nyuaj tshwj xeeb rau cov khoom siv thiab cov qauv ntawm cov gaskets. Hauv cov boilers, kilns, thiab lub cav tso hluav taws xob, qhov kub thiab txias tuaj yeem ncav cuag ntau pua degrees Celsius lossis siab dua. Ordinary carbon steel gaskets yuav sai sai poob hardness thiab elasticity vim annealing, ua rau tsis muaj zog tiv thaiv -loosing thiab tiv thaiv muaj nuj nqi. Thaum tshav kub kub-cov alloys resistant (xws li Inconel) los yog tshwj xeeb stainless hlau yuav tsum tau xaiv, thiab cov qauv yuav tsum tau optimized, xws li los ntawm thickening tus ntoo khaub lig-section los yog siv high- kub resistant caij nplooj ntoos hlav steel los ua lub caij nplooj ntoos hlav gaskets, kom muaj elastic rov qab. Kev saib xyuas yuav tsum tau them rau qhov sib txawv ntawm cov coefficients ntawm thermal expansion ntawm cov ntaub ntawv nyob rau hauv high kub kom tsis txhob gasket breakage los yog sealing tsis ua hauj lwm los ntawm thermal stress.

Nyob rau hauv ib puag ncig corrosive los yog chemically induced ib puag ncig, xws li cov khoom siv tshuaj, electroplating ntau lawm kab, thiab offshore platforms, gaskets yuav tsum muaj ob qho tib si tshuaj tiv thaiv corrosion thiab cov qauv kev ruaj ntseg. Fluoroplastic (PTFE) los yog polytetrafluoroethylene (PTFE) coated gaskets tiv taus cov kua qaub, alkalis, thiab cov kuab tshuaj organic, thiab muaj cov coefficient tsawg ntawm kev sib txhuam, ua rau lawv haum rau ob qho tib si sealing thiab rwb thaiv tsev daim ntaub ntawv. Nyob rau hauv cov khoom hluav taws xob thiab cua kub dissipation xav tau hluav taws xob lossis thermal conductivity, tooj liab lossis txhuas gaskets ua tau raws li qhov yuav tsum tau ua thaum tswj kev tiv thaiv corrosion; nto tiv thaiv- kev kho oxidation tuaj yeem ua rau lawv lub neej ntev.

Nyob rau hauv ib puag ncig uas muaj kev vibration thiab cuam tshuam, xws li tsheb thauj mus los, cov khoom siv hluav taws xob cua, thiab cov tshuab tsim kho, lub caij nplooj ntoos hlav ntxhua khaub ncaws, toothed washers, lossis anti-loosing washers yuav tsum yog qhov tseem ceeb. Caij nplooj ntoos hlav washers cia siab rau elastic deformation mus tas li them nyiaj rau xov clearance; toothed washers tsim mechanical locking los ntawm embedding ntse hniav rau hauv workpiece nto; anti-loosing washers ua ke cov npoo- zoo li bevels los yog kev sib txhuam qhov chaw kom muaj zog tiv thaiv rov qab tig. Nyob rau hauv ib puag ncig nrog cov av noo los yog ntsev tsuag, cov qib corrosion kuj ntawm ob cov ntaub ntawv thiab kev tiv thaiv saum npoo yuav tsum tau txhim kho.

Feem ntau, qhov chaw tsim nyog rau gaskets yuav tsum ua tib zoo xav txog qhov kub thiab txias, av noo thiab corrosive media, hom thauj khoom, thiab tiv thaiv -loosing yuav tsum tau. Tsuas yog los ntawm kev xaiv kev tshawb fawb thiab cov khoom siv sib txuam tuaj yeem ua lub luag haujlwm tseem ceeb hauv kev hloov chaw, muab kev lav zoo rau kev sib txuas ceev.