C0041 Friction Coefficient Tester

Qhov no yog qhov ua tau zoo ntawm kev sib txhuam coefficient meter, uas tuaj yeem yooj yim txiav txim siab qhov sib txhuam dynamic thiab zoo li qub ntawm ntau yam ntaub ntawv, xws li zaj duab xis, yas, ntawv, thiab lwm yam.

Lub coefficient ntawm kev sib txhuam yog ib qho ntawm cov khoom tseem ceeb ntawm ntau yam ntaub ntawv.
Thaum muaj kev sib txheeb ze ntawm ob yam khoom hauv kev sib cuag
Los yog txheeb ze zog nyiam, qhov chaw tiv tauj tsim
Mechanical quab yuam uas cuam tshuam cov txheeb ze txav yog kev sib txhuam
zog. Cov khoom sib txhuam ntawm ib yam khoom tuaj yeem txiav txim siab los ntawm cov khoom siv
Txhawm rau ua kom muaj kev sib txhuam dynamic thiab zoo li qub. Static kev sib txhuam yog ob
Qhov siab tshaj plaws ntawm kev sib cuag ntawm qhov chaw pib ntawm kev sib txheeb txav,
Qhov piv ntawm nws mus rau qhov qub quab yuam yog qhov coefficient ntawm kev sib txhuam zoo li qub; Lub zog dynamic kev sib txhuam yog qhov tsis kam thaum ob qhov chaw sib cuag txav mus rau ib leeg ntawm ib qho kev ceev, thiab qhov sib piv ntawm nws qhov piv rau lub zog ib txwm yog qhov coefficient ntawm kev sib txhuam dynamic. Kev sib txhuam coefficient yog rau ib pawg ntawm kev sib txhuam khub. Nws yog qhov tsis muaj qab hau tsuas yog hais qhov kev sib txhuam coefficient ntawm ib yam khoom. Nyob rau tib lub sijhawm, nws yog ib qho tsim nyog yuav tsum tau qhia txog cov khoom siv uas tsim cov kev sib txhuam ntawm kev sib txhuam thiab qhia cov kev xeem (ambient kub thiab av noo, load, ceev, thiab lwm yam) thiab zawv zawg cov khoom.

Txoj kev sib txhuam coefficient nrhiav kom tau zoo ib yam: siv lub phaj xeem (muab tso rau ntawm lub rooj ua haujlwm kab rov tav), kho ib qho qauv ntawm cov phaj xeem nrog ob-sided kua nplaum los yog lwm txoj kev, thiab kho lwm tus qauv tom qab txiav kom zoo. Nyob rau ntawm qhov tshwj xeeb slider, tso lub slider nyob rau hauv nruab nrab ntawm thawj tus qauv ntawm lub rooj tsavxwm xeem raws li cov lus qhia kev khiav hauj lwm tshwj xeeb, thiab ua kom cov kev taw qhia ntawm ob qho tib si mus rau qhov kev taw qhia zawv zawg thiab lub zog ntsuas qhov system tsuas yog tsis muaj kev ntxhov siab. Feem ntau txais yuav cov qauv hauv qab no ntawm kev kuaj pom.

Cov ntsiab lus hauv qab no yuav tsum tau piav qhia rau kev ntsuas kev sib txhuam coefficient:
Ua ntej ntawm tag nrho cov, cov qauv kev sim rau zaj duab xis sib txhuam coefficient yog raws li ASTM D1894 thiab ISO 8295 (GB 10006 yog sib npaug rau ISO 8295). Ntawm lawv, cov txheej txheem ntau lawm ntawm lub rooj sib tw xeem (tseem hu ua lub rooj zaum ntsuas) yog qhov xav tau heev, tsis yog lub rooj zaum nkaus xwb yuav tsum tau lees tias cov qib thiab smoothness ntawm cov khoom yuav tsum tau ua los ntawm cov khoom tsis sib nqus. Cov qauv sib txawv muaj cov kev cai sib txawv rau kev xeem. Piv txwv li, rau kev xaiv ntawm kev xeem ceev, ASTM D1894 yuav tsum tau 150 ± 30mm / min, tab sis ISO 8295 (GB 10006 yog sib npaug rau ISO 8295) yuav tsum tau 100mm / min. Kev ntsuas sib txawv yuav ua rau muaj kev cuam tshuam loj rau cov txiaj ntsig kev xeem.
Qhov thib ob, qhov ntsuas cua sov tuaj yeem ua tiav. Nws yuav tsum raug sau tseg tias thaum ntsuas cua sov ua tiav, qhov ntsuas kub ntawm lub slider yuav tsum tau ua kom ntseeg tau tias nyob rau hauv chav tsev kub, thiab tsuas yog lub rooj tsavxwm yuav tsum tau rhuab. Qhov no tau hais meej meej hauv ASTM D1894 tus qauv.
Thib peb, tib lub qauv ntsuas kuj tuaj yeem siv los kuaj xyuas qhov sib txhuam coefficient ntawm cov hlau thiab cov ntaub ntawv, tab sis rau cov khoom sib txawv, qhov hnyav, mob stroke, ceev thiab lwm yam tsis sib xws ntawm cov slider yog txawv.
Plaub, thaum siv txoj kev no, koj yuav tsum tau them sai sai rau qhov cuam tshuam ntawm inertia ntawm cov khoom txav ntawm qhov kev xeem.
Thib tsib, feem ntau, kev sib txhuam coefficient ntawm cov khoom yog tsawg dua 1, tab sis qee cov ntaub ntawv kuj hais txog qhov kev sib txhuam coefficient ntau dua 1, piv txwv li, qhov sib txhuam coefficient ntawm cov roj hmab thiab hlau yog nyob nruab nrab ntawm 1 thiab 4.

Cov teeb meem xav tau kev saib xyuas hauv kev sib txhuam coefficient:
Raws li qhov kub thiab txias, qhov sib txhuam coefficient ntawm qee cov yeeb yaj kiab yuav pom qhov sib txawv. Ntawm qhov tod tes, qhov no yog txiav txim siab los ntawm cov yam ntxwv ntawm cov khoom siv polymer nws tus kheej, thiab ntawm qhov tod tes, nws muaj feem xyuam rau cov roj nplua nyeem uas siv hauv kev tsim cov yeeb yaj kiab (lub lubricant yog heev nws yuav nyob ze rau nws qhov melting point thiab ua nplaum. ). Tom qab qhov kub thiab txias nce, qhov hloov pauv ntawm qhov ntsuas qhov nkhaus nce mus txog thaum qhov tshwm sim ntawm "stick-slip" tshwm.