Ndezvipi zvinhu zvinokanganisa kupfeka kwezvidhinha zvinoramba?

Refractory zvidhinha zvakashandiswa zvakanyanya mumapurojekiti mazhinji. Zvidhinha zverefractory zvinoiswawo muchoto chegomba. Refractory zvidhinha hazvifanirwe kungosangana nezvinodiwa zvekudzivirira moto uye kupisa kwakanyanya, asi zvakare kusangana nezvinodiwa zvekupfeka kuramba.

Kupfeka kupikisa kwezvidhinha zvinoramba kunoenderana nekuumbwa uye chimiro chezvidhinha zvinoramba. Kana kuumbwa kwezvidhinha zvinoramba kwakakora polycrystalline inoumbwa nekristaro imwe chete, kusamira kwayo kunoenderana nekuoma kwemamineral crystals. High kuoma uye yakakwirira kupfeka kuramba. Kana iyo mineral crystals isiri-isotropic, zvinhu zvine zviyo zvakanaka uye yakakwirira kupfeka kuramba. Kana zvinhu zvacho zvichiumbwa nezvikamu zvakawanda, kuramba kwayo kupfeka kwakabatana zvakananga nehuwandu hwehuwandu kana porosity yezvinhu, pamwe nekusimba kwekubatanidza pakati pezvikamu. Naizvozvo, kuramba kweabrasion kwechitinha chinoramba kunoenderana nekamuri yayo tembiricha yekumanikidza simba, uye sintered refractory zvidhinha zvine nani abrasion kuramba. Kuumbwa, chimiro, tembiricha, nezvimwe zvezvidhinha zvinoramba zvichakanganisa kusakara kwayo, zvichiita kuti chidhinha chinoramba chiwedzere kunaka mukuramba kupfeka!

Kupfeka kupikisa kwezvidhinha zvinoramba kunoenderanawo nekupisa. Semuenzaniso, mumhando yekushisa iri pasi pe 900 ° C, inowanzoonekwa kuti zvidhinha zvinoramba zvine imwe dhigirii yekusapfeka (yakadai sepasi pe900 ° C). Zvinogona kutariswa kuti sezvo tembiricha inowedzera, kusamira kwekupfeka kunoderera sezvo elastic modulus yezvidhinha zvinoramba ichiwedzera. Kana tembiricha ichiwedzera uye inosvika pakukosha kweiyo elastic modulus, kupfeka kuramba kunowedzera nekudzikira kweiyo elastic modulus. Semuyenzaniso, kuramba kweabrasion kwezvidhinha zvevhu pa1200～1350℃ kwakatonaka pane kudziya kwekamuri. Kana tembiricha ichiwedzera kupfuura 1400 ° C, viscosity yemvura mune refractory chigadzirwa inodonha zvakanyanya uye kushomeka kwekupfeka kunoderera. Zvimwe, sezvidhinha zvinoramba zvichikwira, zvichawedzera sezvo tembiricha inokwira.

Kuburikidza nezviri pamusoro, iwe unoziva zvakawanda nezve refractory zvidhinha?