Dab tsi yog yam uas ua rau kev puas tsuaj ntawm refractory cib?

1. Tshuaj lom neeg

1. Tshuaj tua kab mob ntawm molten slag (xws li tshuaj tua kab mob ntawm molten furnace plua plav). Feem ntau, nws yog qhov tseem ceeb tshaj plaws rau corrosion ntawm refractory cib hauv ob sab phlu ntawm lub qhov cub smelting.

2. Tshuaj lom neeg corrosion ntawm lub cub tawg. Feem ntau yog hais txog gradual oxidative corrosion nyob rau hauv oxidizing rauv roj thaum kub kub.

3. Tshuaj corrosion ntawm refractory bricks. Yog hais tias acidic thiab alkaline refractory cib sib xyaw ua ke, fusible compounds yuav raug tsim ntawm qhov chaw sib cuag ntawm qhov kub thiab txias, ua rau ob qho tib si corroded tib lub sijhawm.

4. Electrochemical yaig. Lub anode (zinc) ntawm tooj liab-zinc roj teeb. Tsis tu ncua ua oxidized thiab corroded, lub hauv paus ntsiab lus ntawm electrochemical yaig ntawm carbon refractory bricks yog tib yam. Nyob rau hauv qhov kub kub smelting furnaces (xws li oxygen steelmaking converters), thaum carbon-muaj refractory cib (xws li tar-bonded cib) yog tov nrog lwm refractory cib, roj teeb yuav tsim. Lub molten slag yog sib npaug rau cov electrolyte, thiab cov pa roj carbon refractory cib ua cov anode, thiab cov cib refractory puas vim carbon oxidation.

2. Cov yam ntxwv ntawm lub cev

1. Kev tawg ntawm cov cib refractory tshwm sim los ntawm kev hloov pauv ntawm qhov kub thiab txias.

2. Kub kub melting tshwm sim los ntawm kub heev.

3. Reheating shrinks los yog expands, ua kev puas tsuaj rau lub rauv lub cev thiab shortening lub neej kev pab cuam ntawm refractory bricks.

4. Qhov cub tsis zoo, cua sov ntau dhau, thermal expansion ntau dhau, ua kom lub cev ua kom sov thiab ua kom lub neej luv ntawm refractory cib.

5. Cov kua hlau nkag mus rau hauv cov pob zeb refractory los ntawm qhov pom qhov pores ntawm cov refractory cib, los yog nkag mus rau hauv cov kab nrib pleb ntawm cov cib, thiab tom qab condensing mus rau hauv ib lub xeev ruaj khov, lub ntim expands thiab stresses generated, uas accelerates lub cracking ntawm lub cib.

Peb, mechanical yam

1. Thaum ntxiv cov ntaub ntawv, tshwj xeeb tshaj yog cov khoom siv hlau hnyav, cov neeg kho tshuab cuam tshuam rau ntawm lub qhov cub hauv qab thiab cov phab ntsa ntawm lub qhov cub yog qhov tseem ceeb ntawm cov cib tawg.

2. Cov dej ntws ntawm cov hlau ua kua (xws li electromagnetic stirring ntawm cov hlau molten nyob rau hauv induction melting rauv) ua rau cov neeg kho tshuab hnav nyob rau sab hauv ntawm lub qhov cub hauv ob sab phlu.

3. Lub vault ntawm lub qhov cub kub kub yog puas vim lub zog extrusion ntau dhau, uas ua rau sab hauv ntawm lub refractory cib kom mos thiab deform.