Cov ntaub ntawv tseem ceeb ntawm kev ua tsis tiav ntawm cov pwm pwm muaj xws li tawg, tawg, tawg, hnav, yaig, thiab lwm yam. Cov yam ntxwv uas ua rau cov phenomena no feem ntau suav nrog cov hauv qab no:
1. Tus kheej tsis xws luag ntawm cov khoom tsim pwm
Cov khoom zoo ntawm cov pwm tuag-casting muaj qhov cuam tshuam loj rau lub neej ntawm cov pwm tuag-casting.Kev sib xyaw ua ke hauv cov khoom siv pwm yog qhov tseem ceeb ntawm cov pwm tawg.Thaum qhov loj ntawm cov inclusions ntau tshaj qhov tseem ceeb, lub zog qaug zog ntawm tuag-casting pwm txo nrog qhov nce ntawm particle loj ntawm cov inclusions.Qhov txo qis hauv qaug zog yog ncaj qha proportional rau lub cubic loj ntawm cov khoom sib xyaw.
Thaum lub sij hawm tuag-casting txheej txheem, tuag-casting pwm alternate ntawm ceev ceev txias thiab ceev cua sov, uas yog nquag tawg, nkig tawg, thiab lwm yam tshwm sim.Yog li ntawd, nyob rau hauv kev xaiv ntawm cov ntaub ntawv pwm, tag nrho cov kev txiav txim siab yuav tsum tau muab rau tej yam xws li tsis kam mus rau txias thiab kub qaug zog, txias thiab kub stability, thiab toughness.
2. Residual stress action
Cov kev siv ntawm cov pwm tuag-casting yog qhov hnyav.Thaum lub sij hawm tuag-casting txheej txheem, cov kua hlau nkag mus rau hauv pwm kab noj hniav, uas yog txwv los ntawm qhov chaw nyob rau hauv lub kab noj hniav thiab generates tensile quab yuam ntawm lub concave ces kaum ntawm kab noj hniav;Qhov kub ntawm cov pwm maj mam nce vim qhov kub ntawm cov hlau molten, thiab cov pwm nthuav tawm vim cua sov, ua rau muaj kev ntxhov siab ntawm cov pwm;Tom qab lub casting yog demolded, cov pwm yog raug rau kev kho mob txias, ua rau shrinkage thiab generating tangential tensile kev nyuaj siab;Cov pwm tuag-casting bears lub zog ntawm kev sib tham sib kev ntxhov siab los ntawm ob sab hauv thiab sab nraud pwm, thiab ntau lub zog sib cuam tshuam thiab sib sau ua ke, ua rau tawg thiab sib sib zog nqus ntawm pwm.
3. Cov qauv tsim tsis tsim nyog
Kev tsim qauv tsim tsis tsim nyog ntawm castings tuaj yeem cuam tshuam ncaj qha rau kev pabcuam lub neej ntawm cov pwm tuag-casting.
Piv txwv li:
① Kev tsim tsis tsim nyog ntawm kev tsim cov khoom lag luam tuaj yeem ua rau cov tub ntxhais rub tawm, thiab nws yooj yim ua rau khawb thaum noj cov khoom tom qab qhib pwm;
② Cov qauv tsim tsis tsim nyog ntawm castings tsis tsuas yog ua rau cov phab ntsa tuab ntawm cov hlau tsis sib xws, tab sis kuj ua rau muaj cov ntu nyias hauv cov pwm, uas feem ntau yog cov neeg ua txhaum ua rau cov kab nrib pleb thaum ntxov.
4. Kev ua haujlwm tsis raug
Kev ua haujlwm tsis yog txheej txheem thaum lub sijhawm tsim khoom kuj yog qhov tseem ceeb cuam tshuam rau lub neej kev pabcuam ntawm cov pwm tuag-casting.
Piv txwv li:
① Tsis preheating lossis preheating kub siab dhau;Kev kub ua ntej ntau dhau tuaj yeem cuam tshuam rau lub zog tawm los ntawm cov khoom siv saum npoo ntawm cov pwm kab noj hniav thiab txo cov thermal qaug zog tiv thaiv ntawm pwm;
② Tsis sib npaug ntawm cov pwm txheej;
③ Tsis tuaj yeem tshawb xyuas thiab tswj cov pwm tuag;
④ Cov txheej txheem installation tsis yog tus qauv.
Fenda Pwm |Tuag Casting Pwm
Post lub sij hawm: Oct-17-2023