ILubricant Basics
Yintoni i-NLGI yeegrisi xa isiza kwiigrisi?
INational Lubricating Grease Institute (NLGI) iseke ulwahlulo olumiselweyo lomgangatho wokuthambisa iigrisi. Inombolo ye-NLGI engaguquguqukiyo (eyaziwa ngokuba yi-“NLGI grade”) emgangathweni womlinganiselo wobunzima obunxulumene negrisi esetyenziselwa ukuthambisa. Inani elikhulu le-NLGI elithetha ukuba igrisi iqina ngakumbi / iyajiya.
Ukungaguquguquki ngumlinganiselo weempawu ezisisiseko zegrisi ezibonisa ubulukhuni begrisi, obunokulungiswa ngokutshintsha umxholo ojiyayo.
Inombolo yongqinelwano ye-NLGI iyodwa ayonelanga ukucacisa igrisi efunwa sisicelo esithile. Ngalo lonke ixesha bhekisa kwincwadi yomnini wakho malunga nodidi olucetyiswayo lwegrisi.
Le theyibhile ilandelayo ibonisa ukuhlelwa kwe-NLGI kwaye ithelekisa ibakala ngalinye kunye neemveliso zasekhaya ezifanayo.
| NLGI grade ( National Lubricating Grease Institute) NLGI amanani ahambelanayo | |||
| NLGI | I-ASTM isebenzile (imivumbo engama-60) | Imbonakalo | I-analog yokutya ehambelanayo |
| Ukungena kwi-25 °C | |||
| 000 | 445-475 | ulwelo | ioli yokupheka |
| 00 | 400-430 | isiqingatha solwelo | apple sauce |
| 0 | 355-385 | ithambile kakhulu | imostade emdaka |
| 1 | 310-340 | ethambileyo | intlama yetumata |
| 2 | 265-295 | igrisi "eqhelekileyo". | ipeanut butter |
| 3 | 220-250 | eqinile | ukunciphisa imifuno |
| 4 | 175-205 | iqine kakhulu | iyogathi ekhenkcezisiweyo |
| 5 | 130-160 | nzima | ipâté egudileyo |
| 6 | 85-115 | kakhulu kakhulu | itshizi ye-cheddar |
NLGI Grade 000-NLGI 0 iigrisi
Isicelo :NLGI Grade 000-NLGI 0 zicetyiswa kuxinzelelo oluphezulu, umsebenzi onzima kunye nesistim evaliweyo.
Izinto eziluncedo: Ukusebenza okugqwesileyo kokuthambisa, ukumpompa okulungileyo, ukulahla ubushushu obungcono.
Ukungalungi: Kulula ukubonakala ukwahlukana kweoli.
NLGI 1- 2
Ngokwesiqhelo i-NIGI 2 ngowona mgangatho uqhelekileyo kunye nokungaguquguquki okudumileyo kuninzi lweegrisi, ziigrisi eziqhelekileyo. Kodwa kwizicelo ezisebenzayo, isicelo esahlukileyo okanye izixhobo ezahlukeneyo ziya kufuneka igrisi yeNLGI eyahlukeneyo.
Izinto eziluncedo: Uluhlu olubanzi lwezicelo, uzinzo oluhle lwe-colloidal
Ukungqinelana kwinqanaba le-NLGI ≠Viscosity
Umthengi uyabuza: Ndikhangela igrisi enye etyebileyo...
Umzi-mveliso wokuthambisa: Ngaba ufuna igrisi “eqina ngakumbi” okanye ngaphezulu kwegrisi “esisincamathelisi”?
Customer: Yintoni umahluko phakathi kwezi zimbini?
Okokuqala amabanga e-NLGI (Consistency &Penetration) leyeemveliso zeGrisi kuphela
Kwaye i-viscosity yeyokugcoba ioli okanye i-oyile yesiseko yeemveliso zegrisi.
Amabanga e-NLGI ahlela igrisi ethambileyo okanye elukhuni, imela imbonakalo yegrisi.
i-viscosity yahlula i-viscosity yesiseko segrisi,Imisela i-viscosity yegrisi,Iphezulu i-viscosity, kwaye igrisi inamathela ngakumbi.
Ngokwesiqhelo iigrisi ezi-2 zinokuba nebakala elifanayo le-NLGI kodwa lahluke kakhulu kwi-viscosity ye-oyile, ngelixa ezinye ezimbini zinokuba ne-viscosity ye-oyile efanayo kodwa amanqanaba angafaniyo e-NLGI, yimeko eqhelekileyo leyo kwiimveliso zegrisi.
Yiyo loo nto kuye kwafuneka siyiqonde kakuhle eyona mfuno yomthengi.