Kev ua tau zoo ntawm cov khoom siv tshuab feem ntau nyob ntawm qhov sib xws ntawm lub cev, tshuaj, thiab cov khoom siv kho tshuab ntawm cov ntaub ntawv xaiv nrog lawv cov kev pabcuam. Cov khoom sib txawv muaj cov yam ntxwv tshwj xeeb ntawm lub zog, hardness, hnav tsis kam, corrosion kuj, kub tsis kam, thiab machinability. Kev xaiv tsim nyog yog qhov yuav tsum tau ua ua ntej txhawm rau ua kom muaj kev ntseeg siab thiab kev pabcuam lub neej ntawm cov khoom. Hauv kev lag luam, cov khoom siv rau cov khoom siv tshuab feem ntau suav nrog carbon steel, alloy steel, stainless hlau, tsis yog -ferrous hlau thiab lawv cov alloys, engineering plastics, thiab cov ntaub ntawv sib xyaw. Lawv tau siv dav raws li kev xav tau ntawm kev ua haujlwm thiab kev ua haujlwm ib puag ncig.
Cov pa roj carbon steel yog cov khoom siv yooj yim tshaj plaws rau cov khoom siv kho tshuab, muaj kev ua haujlwm zoo thiab muaj zog. Nws yog qhov tsim nyog rau cov ntawv thov nrog cov khoom nruab nrab thiab cov kev xav tau ntawm corrosion tsis tshua muaj, xws li cov fasteners zoo tib yam, brackets, thiab qis - cov khoom sib kis ceev. Nws yog tus nqi qis thiab dav dav, tab sis nws yog qhov yooj yim rau xeb hauv qhov chaw ntub lossis corrosive, feem ntau yuav tsum tau kho qhov chaw tiv thaiv.
Alloy hlau, ua los ntawm kev ntxiv cov ntsiab lus alloying xws li chromium, molybdenum, npib tsib xee, thiab manganese rau carbon steel, ho txhim kho nws lub zog, toughness, hnav tsis kam, thiab kub tsis kam. Nws yog dav siv nyob rau hauv kev tsim khoom ntawm cov khoom uas raug loads siab, cuam tshuam, los yog kub kub, xws li iav, ncej, springs, thiab siab - lub zog bolts. Cov proportions ntawm cov alloying sib txawv tuaj yeem siv los ua kom zoo rau qee yam khoom; Piv txwv li, chromium txhim kho hardenability thiab corrosion kuj, thaum molybdenum txhim kho siab - kub lub zog thiab creep kuj.
Stainless hlau siv chromium ua nws lub ntsiab alloying. Thaum cov ntsiab lus chromium nce mus txog kwv yees li 10.5% lossis siab dua, cov yeeb yaj kiab oxide tuab tuaj yeem tsim rau ntawm qhov chaw, muab cov khoom zoo heev corrosion kuj. Austenitic stainless hlau (xws li 304 thiab 316) feem ntau yog siv rau hauv cov khoom noj khoom haus, cov khoom siv tshuaj lom neeg, thiab ib puag ncig marine qhov chaw vim nws cov yas zoo thiab corrosion kuj. Martensitic stainless hlau tuaj yeem ua tiav lub zog thiab tawv dua los ntawm kev kho cua sov, ua rau nws tsim nyog rau kev tsim cov cuab yeej txiav, bearings, thiab hnav- cov khoom tiv taus.
Cov hlau tsis yog-ferrous hlau thiab lawv cov alloys feem ntau yog siv rau hauv cov khoom siv kho tshuab rau cov ntawv thov uas yuav tsum tau ua haujlwm tshwj xeeb. Aluminum and aluminum alloys have low density and good thermal conductivity, making them suitable for lightweight structures and heat dissipation components. Tooj liab thiab tooj liab alloys muaj cov hluav taws xob zoo heev thiab thermal conductivity, feem ntau pom muaj nyob rau hauv cov hluav taws xob tiv tauj thiab cov khoom siv hluav taws xob. Titanium thiab titanium alloys muaj lub zog tshwj xeeb thiab kev tiv thaiv corrosion, thiab yog siv rau hauv cov khoom tseem ceeb hauv siab -precision teb xws li aerospace thiab kev siv kho mob.
Engineering plastics thiab cov ntaub ntawv sib xyaw tau pom kev siv ntau ntxiv hauv xyoo tas los no. Engineering yas xws li nylon thiab polyoxymethylene (POM) muaj tus kheej -lubricating, qis- suab nrov, thiab lub teeb yuag, ua rau lawv haum rau lub teeb - thauj khoom kis tau tus mob thiab hnav- bushings resistant. Carbon fiber reinforced composites sib xyaw ua ke muaj zog tshwj xeeb thiab siab nruj, thiab yog siv rau hauv siab -kawg cov cuab yeej rau qhov hnyav txo thiab txhim kho kev ua haujlwm zoo. Txawm li cas los xij, lawv qhov ntsuas kub thiab huab cua tsis kam yog qhov txwv, yuav tsum muaj kev ntsuam xyuas dav dav ntawm kev ua haujlwm thaum xaiv lawv.
Kev xaiv cov khoom siv yuav tsum ua tib zoo xav txog txhua yam khoom, kev hloov pauv ib puag ncig, kev siv thev naus laus zis, thiab kev lag luam. Thaum lub sij hawm tsim thiab tsim cov theem, hom load, kev khiav hauj lwm kub, kev sib cuag nruab nrab, thiab precision qhov yuav tsum tau ntawm lub Cheebtsam yuav tsum tau txiav txim siab, nrog rau cov khoom specifications thiab kev kho cua sov cov yam ntxwv, kom sib xws. Ntev - kev ua haujlwm tau zoo yuav tsum raug txheeb xyuas los ntawm kev sim. Kev xaiv cov ntaub ntawv tshawb fawb tuaj yeem tsis tsuas yog txhim kho kev ua haujlwm ntawm cov khoom, tab sis kuj txo cov nqi kho thiab txuas ntxiv lub neej tag nrho ntawm cov khoom siv. Yog li ntawd, nws muaj qhov tseem ceeb thiab kev txiav txim siab tseem ceeb hauv kev tsim kho tshuab thiab tsim khoom.
