Udupira twa Alumina Ceramic Rubber Liner tudashira: Igisubizo cyiza cyo kurinda imyenda yo mu nganda

Itsindaagapira k'ururabo ka alumina kadashirani ibikoresho bivanze bikoreshwa cyane mu rwego rwo kurinda imyenda y’inganda. Byongera ubuzima bw’ibikoresho mu bihe bikomeye binyuze mu guhuza uburyo alumina ceramic irwanya kwangirika cyane n’ubushobozi bwo gupfuka bwa rubber. Iyi liner ikoresha alumina nk'ibikoresho by'ingenzi, hamwe no kongeramo ifu ya ceramic na silicon oxide, ishyushye ku bushyuhe bwinshi hafi ya 1700°C. Ubusanzwe alumina irimo ntabwo iri munsi ya 95%, ubucucike bugera kuri 3.5-3.9 g/cm³, kandi ubukana bwa Rockwell buri hejuru nka HRA85-90, bigatuma habaho ubudahangarwa bwiza bwo kwangirika. Mu bikorwa bifatika, iyi liner igaragaza imiterere y’ibice byinshi: urwego rwo hejuru ni alumina ceramic, hagati ni rubber, naho hasi ni icyuma gishyigikiwe. Izi mpande eshatu zifatanye neza binyuze mu nzira yo gukurura imyenda, zigakora sisitemu imwe yo kurinda kwambara.

Imikorere myiza y'iyi liner ivanze igaragarira mu bintu byinshi: Icya mbere, ubushobozi bwayo bwo kwangirika ni bwiza cyane, aho ubukana bwa alumina corundum ceramic bugera hejuru ya HRA85, kandi ubushobozi bwo kwangirika buruta inshuro zirenga 200 icyuma gisanzwe cya karuboni. Icya kabiri, iki gicuruzwa gifite ubushobozi bwo kwangirika neza. Binyuze mu buryo bukomeye bwa ceramic n'imiterere yihariye y'uruziga, hamwe n'urwego rwa rubber buffer, gishobora kurwanya ingaruka z'ibikoresho binini. Icya gatatu, liner ifite ubushobozi bwo kwangirika neza kandi ishobora gukora neza mu bushyuhe buri hagati ya 0°C na 250°C mu gihe kirekire. Byongeye kandi, urwego rwa rubber rukoresha formula yihariye ifite ubushobozi bwo kwangirika kwa aside na alkali, ishobora kwihanganira ingese mu duce duto duto twa aside na alkali. Ku bijyanye n'imiterere ifatika, imbaraga zo gukanda za liner ni ≥850 MPa, gukomera kwa fracture KΙC ≥4.8 MPa·m1/2, imbaraga zo guhuza rubber na ceramic (stress shear) ≥3.0 MPa, kandi igihe rubber isaza ni ≥imyaka 15, bigatuma ibicuruzwa bihora byizewe mu gihe kirekire.

Imiyoboro ya alumina irinda kwangirika ikoreshwa cyane mu nganda, cyane cyane harimo sisitemu zo gutwara amakara zikoresha umuriro, imiyoboro y'ibyuma, imiyoboro y'ibirombe, ibikoresho byo koza amakara, sisitemu zo gutwara sima, n'ahandi hantu hashaje cyane. Mu bikorwa bifatika, imiyoboro muri rusange igabanyijemo ubwoko butandukanye nko guhuza, guhuza, na rubber, harimo ibintu bitandukanye nk'urukiramende rukomeye, rufite imyobo izengurutse, n'imiyoboro ya trapezoidal. Ishobora gucibwa no gupfunyika hakurikijwe imiterere y'ibikoresho, ihaza ibisabwa mu gushyiraho ibikoresho bifite imiterere yihariye. Imiterere ya modular yorohereza gushyiraho no gusimbuza byoroshye, bigabanya cyane igihe n'ikiguzi cyo kubungabunga ibikoresho. Mu mushinga wo guhindura ikoranabuhanga rya Dundee Mining wa toni miliyoni 4.5, ikigega cyo gusya cyakoresheje imiyoboro ya keramike igezweho ifite alumina nziza ya K95 ≥95% n'ubucucike ≥3.8 g/cm³, bigaragaza ko yizewe mu mishinga minini y'inganda.