Kev hloov pauv hauv kev ua haujlwm ntawm graphite tooj liab tes tsho ntawm qhov kub sib txawv
Kev ua haujlwm ntawm graphite tooj liab tes tsho yuav hloov ntawm qhov sib txawv ntawm qhov kub thiab txias, uas feem ntau yog nyob ntawm cov yam ntxwv ntawm cov tooj liab alloy matrix thiab graphite lubricant. Cov hauv qab no yog qhov ua tau hloov pauv ntawm graphite tooj liab tes tsho hauv qhov sib txawv ntawm qhov kub thiab txias:
1. Tsawg kub ib puag ncig (hauv qab chav tsev kub)
Thaum qhov kub thiab txias, ntau cov roj thiab roj ua kom khov thiab tuaj yeem ua kom khov, ua rau txo cov roj lubrication. Txawm li cas los xij, nws tus kheej-lubricating zog ntawm lub tes tsho graphite tooj liab tseem ua tau zoo nyob rau hauv cov ntaub ntawv no vim hais tias graphite lubricant tsis cia siab rau cov kua roj nplua nyeem.
Qhov ntsuas kub qis tuaj yeem ua rau cov khoom siv hlau ua kom brittleness, tab sis qhov no feem ntau tsis muaj kev cuam tshuam loj rau tag nrho kev ua haujlwm ntawm graphite tooj liab lub tes tsho tshwj tsis yog tias qhov kub thiab txias tsis tshua muaj siab.
2. Chav ntsuas kub ib puag ncig (kwv yees li 20 degree txog 25 degree)
Qhov no yog qhov kev ua haujlwm ruaj khov tshaj plaws ntawm graphite tooj liab tes tsho. Kev sib cuam tshuam ntawm tooj liab alloy matrix thiab graphite lubricant muab lubrication zoo thiab hnav tsis kam.
Nyob rau hauv qhov ntsuas kub no, lub tes tsho graphite tooj liab tuaj yeem tiv taus cov khoom ua haujlwm ib txwm muaj, thiab kev sib txhuam coefficient thiab hnav tus nqi yog nyob rau theem qis.
3. Nruab nrab kub (li 100 degree txog 200 degree)
Raws li qhov kub thiab txias, cov tooj liab alloy matrix yuav txo qis me ntsis hauv hardness, uas yuav ua rau me ntsis ntxiv kev sib txhuam thiab hnav. Txawm li cas los xij, graphite lub lubricating zog tseem ua tau zoo thiab tuaj yeem pab txo cov teeb meem no.
Qhov kub thiab txias tuaj yeem txhim kho cov khoom lubrication ntawm graphite thiab txo cov kev sib txhuam coefficient, vim tias graphite hloov tau yooj yim dua ntawm qhov kub thiab txias thiab tsim cov zaj duab xis lubricating ntawm qhov chaw sib cuag.
4. Kub kub ib puag ncig (siab tshaj 200 degree)
Nyob rau hauv thaj tsam ntawm 250 degree mus rau 350 degree, lub tes tsho graphite tooj liab tseem tuaj yeem tswj tau lub zog txaus thiab lubrication kev ua tau zoo, tab sis cov thermal expansion coefficient yuav tsum tau txiav txim siab thiab qhov sib txawv ntawm lub tes tsho tooj liab graphite thiab cov ncej yuav tsum tsim nyog ntxiv kom tsis txhob xauv .
Thaum kub siab tshaj 350 degree, lub zog thiab hardness ntawm tooj liab alloy matrix txo, uas yuav cuam tshuam rau cov qauv kev ncaj ncees thiab load-bearing muaj peev xwm ntawm graphite tooj liab tes tsho.
Kev kub siab tuaj yeem ua rau txo qis hauv kev ua haujlwm ntawm graphite lubricants, raws li graphite pib oxidize nyob ib ncig ntawm 400 degree, uas yuav txo tau nws cov lubricating efficiency.
Ntawm qhov kub thiab txias heev, lub tes tsho tooj liab graphite yuav xav tau kev tsim tshwj xeeb lossis xaiv cov khoom siv los xyuas kom meej lawv cov kev ua tau zoo thiab kev nyab xeeb.
