C0041 Friction Coefficient Tester

Iyi inonyatso shanda friction coefficient mita, iyo inogona kuona zviri nyore kusimba uye static friction coefficients emhando dzakasiyana dzezvinhu, senge mafirimu, mapurasitiki, mapepa, nezvimwe.

Iyo coefficient of friction ndeimwe yezvinhu zvakakosha zvezvinhu zvakasiyana-siyana.
Kana pave nekufamba kuri pakati pezvinhu zviviri zvakasangana
Kana hukama hwekufamba, iyo yekubata kumeso inoburitsa
The mechanical force inotadzisa hama kufamba is friction
simba. Kukweshana kwechimwe chinhu kunogona kutariswa nechinhu
Kuratidzira iyo inoshanduka uye static friction coefficient. Static friction iviri
Kunyanya kupikisa kwenzvimbo yekubatana pakutanga kwekufamba kwehama,
Chiyero chayo kune simba rinowanzoita ndiyo coefficient ye static friction; dynamic friction force ndiko kupikisa apo nzvimbo mbiri dzinosangana dzinofamba dzichienderana kune imwe spidhi, uye reshiyo yereshiyo yayo kune yakajairika simba ndiyo coefficient ye dynamic friction. Iko friction coefficient ndeyeboka re friction pairs. Hazvina zvazvinoreva kungotaura friction coefficient yechimwe chinhu. Panguva imwecheteyo, zvinodikanwa kutsanangura rudzi rwezvinhu zvinoumba iyo friction pair uye kutsanangura mamiriro ebvunzo (ambient tembiricha uye humidity, mutoro, kumhanya, nezvimwewo) Uye inotsvedza zvinhu.

Iyo friction coefficient yekuona nzira yakaenzana: shandisa test plate (yakaiswa pahorizontal operating table), gadzirisa imwe sample patest plate nekaviri-sided glue kana dzimwe nzira, uye gadzirisa imwe sample mushure mekunge yachekwa zvakanaka. Pane inotsvedza yakatsaurirwa, isa inotsvedza pakati peyekutanga sampuli pabhodhi rekuyedza zvinoenderana nemirairo chaiyo yekushanda, uye ita ratidziro yebvunzo yemasampuli maviri anoenderana neinotsvedza nzira uye simba rekuyera system harina kusimbiswa. Kazhinji tora nzira inotevera yekuona chimiro.

Aya mapoinzi anotevera anofanirwa kutsanangurwa kune friction coefficient test:
Chekutanga pane zvese, iyo yekuyedza nzira zviyero zveiyo firimu friction coefficient yakavakirwa paASTM D1894 uye ISO 8295 (GB 10006 yakaenzana neISO 8295). Pakati pavo, maitiro ekugadzira ebvunzo bhodhi (inonziwo bhenji rekuyedza) iri kudiwa zvakanyanya, kwete chete tafura yetafura inofanirwa kuvimbiswa Iyo nhanho uye kutsetseka kwechigadzirwa kunoda kugadzirwa nezvinhu zvisiri-magineti. Miyero yakasiyana ine zvinodiwa zvakasiyana zvebvunzo mamiriro. Semuenzaniso, pakusarudzwa kwekumhanya kwebvunzo, ASTM D1894 inoda 150±30mm/min, asi ISO 8295 (GB 10006 yakaenzana neISO 8295) inoda 100mm/min. Kumhanya kwakasiyana kwebvunzo kuchakanganisa zvakanyanya mhinduro dzebvunzo.
Chechipiri, bvunzo yekudziya inogona kuitika. Izvo zvinofanirwa kucherechedzwa kuti kana bvunzo yekudziya ichiitwa, tembiricha yeinotsvedza inofanirwa kuve nechokwadi kuti iri pamhepo tembiricha, uye chete bhodhi rekuyedza rinofanirwa kupisa. Izvi zvinotsanangurwa zvakajeka muASTM D1894 standard.
Chechitatu, iyo yakafanana bvunzo chimiro inogona zvakare kushandiswa kuona friction coefficient yesimbi nemapepa, asi kune akasiyana bvunzo zvinhu, huremu, sitiroko, kumhanya uye mamwe ma paramita emutsetse akasiyana.
Chechina, paunenge uchishandisa nzira iyi, unofanirwa kubhadhara kune simba re inertia yechinhu chinofamba pamuedzo.
Chechishanu, kazhinji, friction coefficient yechinhu isingasviki 1, asi mamwe magwaro anotaurawo nyaya iyo friction coefficient yakakura kupfuura 1, semuenzaniso, dhizaini yekukwesha pakati perabha nesimbi iri pakati pe1 ne4.

Nyaya dzinoda kutariswa mu friction coefficient test:
Sezvo tembiricha ichiwedzera, friction coefficient yemamwe mafirimu anoratidza maitiro ekukwira. Kune rimwe divi, izvi zvinotemerwa nehunhu hwepolymer zvinhu pachazvo, uye kune rumwe rutivi, zvine hukama nemafuta anoshandiswa mukugadzira firimu (mafuta acho akanyanya Inogona kunge iri pedyo nekunyungudika kwayo uye inonamira. ). Mushure mekunge tembiricha yakwira, kushanduka-shanduka kwesimba rekuyeresa curve kunowedzera kusvikira chiitiko che "stick-slip" chichioneka.