Dab tsi yog txheej txheem ntawm extrusion?

1, Raw khoom npaj
Qhov pib ntawm kev siv tshuab extrusion yog kev npaj cov khoom siv raw. Rau cov ntaub ntawv hlau, cov ntaub ntawv raw feem ntau yog cov ntawv uas tau ua tiav thawj zaug xws li smelting, forging, lossis dov. Cov blanks no yuav tsum tau soj ntsuam nruj thiab tshuaj xyuas kom ntseeg tau tias lawv cov tshuaj lom neeg muaj pes tsawg leeg, lub cev muaj zog, thiab qhov ntev geometric ua tau raws li qhov yuav tsum tau ua ntawm cov txheej txheem extrusion. Tsis tas li ntawd, txhawm rau txhim kho extrusion efficiency thiab cov khoom zoo, cov ntaub ntawv raw kuj yuav tsum tau ua ntej kev kho mob xws li ntxuav, degreasing, thiab txiav kom tshem tawm cov impurities thiab roj, kom ntseeg tau qhov kev vam meej ntawm cov txheej txheem extrusion.
2, Pwm tsim
Pwm yog ib qho tseem ceeb hauv kev siv tshuab extrusion, thiab nws cov qauv tsim ncaj qha txiav txim siab cov duab, qhov loj me, thiab kev ua haujlwm ntawm cov khoom. Kev tsim cov pwm yuav tsum xav txog ntau yam, suav nrog cov khoom siv ntawm cov khoom siv raw, extrusion piv, extrusion ceev, pwm cov ntaub ntawv thiab lawv cov txheej txheem kho cua sov. Kev tsim pwm zoo yuav tsum xyuas kom meej tias cov khoom tuaj yeem deform tsis tu ncua thaum lub sij hawm extrusion txheej txheem, tsis txhob muaj qhov tsis xws luag xws li tawg thiab folds. Nyob rau tib lub sijhawm, cov pwm yuav tsum muaj kev hnav zoo, kub tsis kam, thiab kev cuam tshuam los tiv thaiv lub siab loj thiab kub ib puag ncig thaum lub sij hawm extrusion txheej txheem.
3, Squeezing kev ua haujlwm
Extrusion ua haujlwm yog cov txheej txheem tseem ceeb ntawm kev siv tshuab extrusion. Nyob rau theem no, cov khoom siv raw yog rhuab mus rau qhov kub thiab txias (rau cov khoom siv hlau) los txhim kho lawv cov plasticity thiab flowability. Kev xaiv cov cua sov kub yuav tsum tau txiav txim siab raws li cov khoom siv ntawm cov khoom siv raw thiab cov kev xav tau ntawm cov txheej txheem extrusion, kom ntseeg tau tias cov khoom siv raw tuaj yeem deform smoothly thaum tsis txhob overheating thiab deterioration ntawm cov ntaub so ntswg. Cov khoom siv hluav taws xob rhuab yog pub rau hauv extruder thiab ua rau cov yas deformation los ntawm lub qhov lossis qhov khoob ntawm cov pwm nyob rau hauv lub zog siab, thaum kawg tsim cov khoom xav tau. Thaum lub sij hawm extrusion txheej txheem, nws yuav tsum nruj me ntsis tswj tsis xws li extrusion ceev, extrusion siab, thiab pwm kub los xyuas kom meej qhov zoo thiab stability ntawm cov khoom.
4, Kev ua haujlwm tom qab
Cov khoom siv extruded feem ntau xav tau cov kev kho mob tom ntej txhawm rau txhim kho lawv cov kev ua tau zoo thiab zoo. Rau cov ntaub ntawv hlau, cov kev kho mob tom ntej no feem ntau suav nrog cov txheej txheem kho cua sov xws li quenching, tempering, thiab straightening los txhim kho cov qauv sab hauv thiab cov khoom siv tshuab. Tsis tas li ntawd, kev kho deg thiab kev txiav cov khoom lag luam yuav tsum tau ua kom tau raws li kev siv sib txawv. Kev kho deg tuaj yeem siv txoj hauv kev xws li sandblasting, polishing, oxidation, thiab lwm yam los txhim kho qhov smoothness thiab corrosion kuj ntawm cov khoom. Kev txiav tuaj yeem ua tiav siv txoj hauv kev xws li sawing, milling, lossis plasma txiav raws li xav tau.
5, Kev soj ntsuam zoo thiab ntim khoom
Kev tshuaj xyuas zoo yog ib feem tseem ceeb ntawm cov txheej txheem extrusion. Los ntawm kev ua tiav kev ntsuam xyuas ntawm qhov loj, zoo, qhov zoo, thiab cov khoom siv ntawm cov khoom extruded, nws tuaj yeem ua kom ntseeg tau tias cov khoom ua tau raws li cov qauv tsim thiab cov qauv tsim. Cov khoom tsim nyog yuav tsum tau ntim khoom kom zoo kom tsis txhob muaj kev puas tsuaj thaum thauj thiab khaws cia. Cov txheej txheem ntim khoom yuav tsum tau txiav txim siab raws li cov yam ntxwv xws li cov duab, qhov loj me, thiab qhov hnyav ntawm cov khoom, feem ntau yog siv cov thawv ntim ntoo, cov thawv ntawv thawv ntim khoom, lossis ntim yas.