Cov yam ntxwv ntawm graphite rau tshav kub exchangers

graphite heat exchanger yog cov khoom siv hluav taws xob ua los ntawm graphite rau cov khoom siv hluav taws xob hloov hluav taws xob. Cov graphite siv los tsim cov khoom siv hluav taws xob sib txawv yuav tsum yog impermeable. Cov hom siv feem ntau yog impermeable graphite thiab nias impermeable graphite.

Cov txheej txheem tshuaj graphite yog cov khoom siv graphite feem ntau. Vim yog cov yam ntxwv ntxeem tau ntawm graphite, nws feem ntau yog impregnated nrog ib tug impregnating tus neeg saib xyuas kom nws impermeable graphite, thiab nyob rau tib lub sij hawm txhim khu nws lub cev zog, kom nws lub zog yuav tsum tau nce los ntawm 2-3 zaug.

01 Corrosion kuj

Graphite nws tus kheej muaj kev tiv thaiv corrosion zoo heev, thiab tsuas yog corroded los ntawm qee cov khoom muaj zog oxidizing, xws li nitric acid, oleum, aqua regia, halogen, thiab lwm yam.

Kev tiv thaiv corrosion ntawm cov khoom siv graphite rau cov txheej txheem tshuaj feem ntau yog nyob ntawm corrosion kuj thiab thermal stability ntawm impregnant siv thiab lub pore qauv ntawm graphite.

02 Thermal conductivity

Lub thermal conductivity ntawm impervious graphite yog siab dua li ntawm ntau cov hlau, thiab cov thermal conductivity ntawm ob peb cov ntaub ntawv uas feem ntau siv structural yuav pom tau hais tias nws tsuas yog inferior rau tooj liab thiab txhuas, uas yog cov khoom zoo tagnrho rau kev sib pauv khoom cua sov, combustion furnaces. thiab gas coolers.

03 Thermal stability

Graphite muaj thermal stability zoo heev, lub melting point ntawm unimpregnated graphite yog hais txog 4000degree, thiab kev ua haujlwm kub tuaj yeem ncav cuag 3000degree. Thiab lub zog txhua yam nce nrog qhov nce ntawm qhov kub thiab txias. Qhov tso cai kub ntawm feem ntau siv hluavtaws cob impregnated graphite yog 205degree.

04 Mechanical zog

Lub zog ntawm impregnated graphite nyob ntawm qhov pore tis, qhov ntau qhov pore faib, qhov zoo dua qhov toughness ntawm graphite, thiab qhov qis dua qhov pore faib, qhov siab dua cov neeg kho tshuab lub zog. Cov khoom siv isostatic nias muaj ntau qhov sib txawv ntawm qhov pores, me pores thiab siab zog dua li cov khoom tsim los ntawm kev co molding.

05 Yooj yim rau txheej txheem

Graphite muaj kev ua haujlwm zoo thiab yooj yim ua rau hauv cov khoom siv thiab qhov chaw ntawm ntau yam qauv, nrog kev hnav zoo thiab lub teeb yuag. Graphite yog ib qho yooj yim rau kev sib raug zoo, thiab feem ntau ntawm lawv tuaj yeem siv graphite splicing tshuab, uas yog ib qho yooj yim los tswj ntawm qhov chaw.

06 Hnav tsis kam

Graphite nws tus kheej muaj qee yam kev txhim kho corrosion thiab ua haujlwm yooj yim. Txhawm rau hloov kho kom zoo dua hnav tsis kam, cov khoom siv ceramic tuaj yeem sib xyaw ua ke ntawm nws qhov chaw kom nws muaj zog hnav tsis kam, yog li txhim kho kev pabcuam lub neej.

07 Thermal expansion coefficient

Graphite muaj qhov zoo thermal expansion coefficient, uas yog superior rau ntau yam ntaub ntawv hlau, thiab muaj qhov ruaj khov qhov tseeb ntawm qhov kub thiab txias.

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