Qhov Tawm Tawm Ntawm O-Rings

Pom lub nrig txog kev pom: Feem ntau lub foob qhia tsis pom kev txawv txav. Nyob rau hauv qhov xwm txheej huab, shrinkage tuaj yeem pom.

Cause: Cov khoom xyaw tsis huv hauv qhov txheej txheem elastomer tuaj yeem tso tawm (volatilized) hauv qab nqus. Cov kev sib xyaw ua ke no tuaj yeem yog ib feem ntawm cov qauv tsim elastomer, cov khoom tsis zoo los ntawm cov khoom xyaw lossis lwm yam gasses uas tau khuam rau hauv cov polymer matrix thaum lub sij hawm molding txheej txheem. Hauv cov ntawv thov semiconductor, tawm-gassed lwg me me tuaj yeem ua rau paug thaum lub sijhawm ua cov haujlwm tsis zoo. Hauv cov ntawv thov kev lag luam nws tuaj yeem cuam tshuam rau lub tshuab nqus tsev ua haujlwm.

Kev daws: Cov ntaub ntawv cov qauv tsim nrog cov ntshiab polymers thiab tsis muaj cov khoom sib xyaw tsis haum (piv txwv li plasticisers, waxes, thiab lwm yam) muab qis dua kev ua tsis zoo. Kev siv cov ntaub ntawv ntsuas rau qhov ntsuas kub tsis raug rau daim ntawv thov kuj tseem pab ua kom tus npau taws ntawm qhov kub qis.