1. Porcelain alloy melting point yuav tsum siab tshaj qhov melting point ntawm porcelain hmoov (170-270 degree), thiaj li yuav xyuas kom meej tias cov hlau puag txheej ntawm lub crown fusion porcelain barbecue tsis ua rau hlau melting los yog deformation. Hauv tsev ci porcelain Ni-Cr hlau alloy, nws melting point ntawm 1320 degree, porcelain hmoov siv low-fusing porcelain hmoov, nws melting point ntawm 871-1065 degree .
2. Alloy kom muaj zog flexural siab thiab modulus ntawm elasticity, siab dua modulus ntawm elasticity, hlau substrate yuav ua tau thinner, nyob rau hauv lub quab yuam tsis ua rau deformation; tsis muaj elasticity ntawm cov plooj (porcelain) yuav tsum muaj zog, tsis yog-deforming substrate hlau. Feem ntau, cov thickness ntawm cov hlau substrate tsis tuaj yeem nyias dhau, vim tias qhov kev ntxhov siab ntawm cov porcelain txheej tuaj yeem ua rau cov hlau substrate tuaj yeem nthuav tawm sab nraud deformation, thinner cov hlau substrate txheej, qhov ntau dua deformation, ua rau PFM. lub caj dab caj dab tsis nyob ze, tab sis kuj txo qhov kub-ceramics interface thermal stability, nyob rau hauv qhov txias, nquag mus ceramic cracking.PFM ntau lawm yuav tsum yog ib tug tsim nyog nce nyob rau hauv lub thickness ntawm cov hlau substrate, tswj sintering tom qab txias ntawm PFM. tag nrho cov yas nrawm, kom tiv thaiv kom txias sai ntawm cov plooj (porcelain) tawg.
3. Cov qauv hlau ntawm cov hmoov nplej zoo ntawm cov khoom siv adhesion rau ntawm ntug ntawm ib qho zoo haum, thiab tib lub sij hawm tuaj yeem ua rau corrosion kuj thiab hardness.
4. Lub alloy yog ib qho yooj yim mus cam khwb cia, lub casting lub cev tuaj yeem ua tib zoo yoog rau cov hniav uas npaj tau, thiab tuaj yeem them nyiaj rau cov kev hloov pauv ntawm cov khoom siv thiab lub cev.
5. Lub alloy yuav tsum yooj yim rau ntub, thiaj li yuav tsim ib tug zoo daim ntawv cog lus nrog fused ceramic.
6. Cov hlau yuav tsum muaj qhov tsim nyog qhov kub thiab txias casting, thiab cov plooj (porcelain) muaj kev sib xyaw ua ke zoo ntawm lub zog, cov plooj (porcelain) thiab cov hlau yuav tsum sib phim cov coefficient ntawm thermal expansion.