Kev txiav txim siab rau kev xaiv cov khoom hauv Precision Mechanical Component Machining
I. Kev txiav txim siab raws li Kev Pabcuam Kev Ua Haujlwm
Lub zog thiab Hardness
Kev xaiv cov khoom siv yog nyob ntawm qhov chaw pabcuam thiab thauj khoom -cov kev cai ntawm cov khoom. Piv txwv li, lub cav crankshafts, uas raug rau qhov tseem ceeb alternating loads, feem ntau yog ua los ntawm high-lub zog alloy steels xws li 40Cr los xyuas kom meej lawv tsis deform los yog puas nyob rau hauv ntev - lub sij hawm complex loading tej yam kev mob. Hauv qhov sib piv, cov cuab yeej txiav siv rau kev ua haujlwm siab - cov ntaub ntawv hardness feem ntau yog ua los ntawm cov cemented carbides, uas muaj cov hardness siab heev thiab hnav tsis kam, ua rau lawv tswj tau cov npoo ntse.
Hnav Resistance
Rau cov khoom siv ua haujlwm hauv kev sib txhuam, xws li lub zog thiab cov kabmob, cov khoom siv nrog kev hnav zoo yog qhov tseem ceeb. Piv txwv li, cov iav hauv tsheb sib kis feem ntau yog tsim los ntawm cov hlau carburizing zoo li 20CrMnTi. Tom qab carburizing thiab quenching, cov ntaub ntawv no ua tiav qhov tawv tawv thiab hnav tsis kam, txo cov iav hnav thaum lub sij hawm kis tau tus mob thiab ncua kev pab cuam lub neej.
Corrosion Resistance
Cheebtsam raug cov av noo, acidic, los yog alkaline corrosive ib puag ncig, xws li li qub thiab cov kav dej hauv cov khoom siv tshuaj, yuav tsum muaj corrosion- cov ntaub ntawv tiv taus. Piv txwv li, 316L stainless hlau, nrog nws zoo heev corrosion kuj thiab tsis kam mus rau intergranular corrosion, muaj peev xwm tuav ruaj khov kev kawm nyob rau hauv hnyav tshuaj ib puag ncig.
Thermal stability
Cheebtsam uas ua haujlwm nyob rau hauv siab - qhov kub thiab txias ib puag ncig, xws li turbine hniav hauv aero- cav, xav tau cov ntaub ntawv nrog thermal stability. Nickel-raws li superalloys, uas muaj superior siab - kub lub zog, oxidation kuj, thiab tsis kam mus kub corrosion, feem ntau yog siv rau turbine hniav. Cov ntaub ntawv no tuav lawv cov duab thiab kev ua haujlwm ntawm qhov kub thiab txias, kom ntseeg tau tias lub cav ua haujlwm ib txwm muaj.
II. Kev txiav txim siab raws li Machinability
Machineability
Txhawm rau txhim kho machining efficiency thiab zoo, cov ntaub ntawv yuav tsum muaj machinability zoo. Piv txwv li, dawb- txiav steels (xws li Y12, Y15) tau txhim kho machinability vim qhov sib ntxiv ntawm cov khoom xws li sulfur thiab txhuas. Cov ntaub ntawv no ua rau txo cov cuab yeej hnav, txo qis zog, thiab yooj yim nti tawg thaum lub sij hawm machining, yog li txhim kho machining efficiency thiab nto zoo.
Forgeability
Rau cov khoom uas xav tau forging, forgeability ntawm cov khoom yog qhov tseem ceeb. Piv txwv li, 6061 aluminium alloy muaj qhov zoo forgeability thiab tuaj yeem yooj yim deformed hauv lub xeev kub. Nws tuaj yeem raug forged rau hauv ntau yam duab thiab ua tiav cov cuab yeej zoo tom qab forging.
Weldability
Thaum cov khoom yuav tsum tau sib sau ua ke los ntawm vuam, cov ntaub ntawv uas muaj weldability zoo yuav tsum tau xaiv. Piv txwv li, Q235 steel muaj qhov zoo tshaj plaws weldability thiab tsis tshua muaj kev cuam tshuam xws li tawg thiab porosity thaum vuam. Qhov no ua kom lub zog thiab sealability ntawm cov pob qij txha welded thiab yog dav siv nyob rau hauv ntau yam welded structural Cheebtsam.
Kev kho cua sov ua haujlwm
Yuav kom ua tiav cov khoom zoo, ntau cov khoom siv kho tshuab precision yuav tsum tau kho cua sov. Piv txwv li, 45 steel tuaj yeem ua tiav kev sib xyaw ua ke zoo ntawm lub zog thiab lub zog los ntawm kev quenching thiab tempering. Txawm li cas los xij, kev tswj xyuas nruj ntawm kev kho cua sov yog tsim nyog los tiv thaiv cov teeb meem xws li deformation thiab tawg.
