Dab tsi yog cov khoom siv zoo tshaj plaws rau piston pas nrig? Qhov no yog ib lo lus nug uas ntau tus engineers thiab mechanics tau nug lawv tus kheej. Lo lus teb rau lo lus nug no tsis yog ib qho yooj yim vim nws nyob ntawm ntau yam sib txawv xws li daim ntawv thov, kev ua haujlwm, thiab kev siv nyiaj txiag. Hauv tsab xov xwm no, peb yuav tshawb txog ntau yam ntaub ntawv siv rau piston pas nrig thiab lawv qhov zoo thiab qhov tsis zoo los pab koj txiav txim siab paub.
Taw qhia
Lub piston pas nrig yog ib feem ntawm lub hydraulic los yog pneumatic lub tog raj kheej uas txuas lub piston mus rau crosshead thiab xa cov quab yuam tsim los ntawm lub piston mus rau sab nraud load. Yog li ntawd, nws yog ib qho tseem ceeb ntawm ntau yam kev lag luam xws li cov cuab yeej txav hauv ntiaj teb, hydraulically ua machinery, cav, thiab hydraulic nqa. Cov khoom siv rau cov pas nrig piston yuav tsum muaj zog, ruaj khov, thiab muaj kev tiv thaiv corrosion zoo thiab hnav tsis kam.
Hlau
Hlau yog cov khoom siv nrov tshaj plaws siv rau piston pas nrig vim nws lub zog, ruaj khov, thiab muaj. Nws muaj zog tensile zoo, hardness, thiab toughness zog. Ntxiv mus, steel yog pheej yig thiab yooj yim muaj nyob rau hauv kev ua lag luam. Txawm li cas los xij, ntau hom steels muaj cov khoom sib txawv uas ua rau lawv tsim nyog lossis tsis tsim nyog rau kev siv tshwj xeeb.
Plain carbon steel yog hom yooj yim tshaj plaws ntawm cov hlau siv rau piston pas nrig. Nws yog pheej yig, tawv, thiab yooj yim rau tshuab. Txawm li cas los xij, nws muaj cov khoom tsis zoo corrosion kuj thiab muaj kev cuam tshuam rau xeb thiab pitting. Yog li ntawd, nws tsis haum rau kev siv nyob rau hauv ib puag ncig corrosive.
Alloy steels xws li chrome-molybdenum steel thiab npib tsib xee-chromium-molybdenum steel yog kim dua li cov pa roj carbon monoxide, tab sis lawv muaj cov khoom zoo dua corrosion thiab muaj peev xwm tuav tau ntau dua thiab siab. Lawv yog siv nyob rau hauv cov ntaub ntawv uas yuav tsum tau muaj zog thiab durability, xws li nyob rau hauv hnyav lub ntiaj teb-tsav khoom, mining machinery, thiab hydraulic presses.
Stainless hlau
Stainless hlau yog cov khoom siv nrov xaiv rau piston pas nrig hauv cov ntawv thov uas xav tau kev tiv thaiv corrosion zoo heev. Stainless hlau muaj cov ntsiab lus siab chromium, uas tsim cov txheej txheem tiv thaiv kev tiv thaiv ntawm qhov chaw uas tiv thaiv corrosion thiab staining. Tsis tas li ntawd, cov hlau tsis muaj steel muaj cov khoom siv zoo thiab tuaj yeem ua haujlwm siab thiab siab. Txawm li cas los xij, stainless hlau yog kim dua li carbon steel thiab tuaj yeem nyuaj rau tshuab.
Aluminium
Aluminium yog cov khoom siv hnyav uas zoo tagnrho rau kev siv qhov hnyav yog qhov tseem ceeb. Aluminium muaj lub zog-rau-qhov hnyav piv, zoo corrosion kuj, thiab tuaj yeem ua tau yooj yim machined. Txawm li cas los xij, aluminium tsis muaj zog npaum li cov hlau thiab tej zaum yuav tsis haum rau kev siv siab lossis kev siv siab. Tsis tas li ntawd, aluminium yog feem ntau hnav thiab qaug zog dua li cov hlau, uas tuaj yeem txwv nws txoj sia.
Titanium
Titanium yog cov khoom siv muaj zog, lub teeb yuag uas muaj cov khoom zoo corrosion kuj. Nws yog siv rau hauv cov ntawv thov uas txo qhov hnyav thiab corrosion kuj yog qhov tseem ceeb. Titanium yog kim dua hlau lossis txhuas, tab sis nws muaj ntau yam zoo xws li lub zog-rau-hnyav piv, zoo heev qaug zog, thiab biocompatibility. Nws yog siv nyob rau hauv daim ntawv thov xws li kev kho mob cog, aerospace, thiab cov khoom siv tub rog.
Ceramic
Cov ntaub ntawv ceramic xws li zirconia, alumina, thiab silicon carbide muaj cov tawv tawv zoo heev, hnav tsis kam, thiab cov khoom tiv thaiv corrosion. Lawv siv nyob rau hauv daim ntawv thov uas hnyav hnav, corrosion, thiab kub kub koom nrog. Txawm li cas los xij, ceramics yog nkig thiab tuaj yeem ua rau tawg thaum muaj kev ntxhov siab, uas txwv tsis pub lawv siv hauv cov ntawv thov siab. Ntxiv mus, ceramics yog kim thiab yuav nyuaj rau tshuab.
Xaus
Hauv kev xaus, xaiv cov khoom siv zoo rau lub pas nrig piston nyob ntawm ntau yam xws li daim ntawv thov, kev ua haujlwm, thiab kev siv nyiaj txiag. Hlau yog cov khoom siv nrov tshaj plaws siv rau piston pas nrig vim nws lub zog, ruaj khov, thiab muaj. Txawm li cas los xij, cov hlau alloys xws li chrome-molybdenum steel thiab npib tsib xee-chromium-molybdenum steel muaj kev tiv thaiv corrosion zoo dua thiab tuaj yeem ua haujlwm ntau dua thiab muaj zog. Stainless hlau yog zoo tagnrho rau daim ntaub ntawv uas yuav tsum tau zoo heev corrosion kuj. Aluminium yog zoo meej rau kev siv lub teeb, tab sis tej zaum yuav tsis haum rau high-load los yog high-pressure daim ntaub ntawv. Titanium yog qhov zoo tagnrho rau cov ntawv thov uas txo qhov hnyav thiab tiv thaiv corrosion yog qhov tseem ceeb. Ceramics muaj kev hnav zoo heev thiab kev tiv thaiv corrosion, tab sis tuaj yeem ua nkig thiab kim. Kev xaiv cov khoom siv zoo tshaj plaws rau tus pas nrig piston yuav tsum tau ua tib zoo xav txog tag nrho cov xwm txheej no kom ntseeg tau tias kev ua tau zoo thiab ua haujlwm ntev.