Lubricant Basics
Chii chinonzi NLGI yemagirisi kana Yasvika pamagirosi?
National Lubricating Grease Institute (NLGI) yakagadzira chiyero chakatarwa chekuzodza magirisi. Iyo NLGI kusachinja-chinja nhamba (inozivikanwa se“NLGI giredhi”) yakajairwa pachiyero chekuoma kwegirisi rinoshandiswa pakuzora. Iyo yakakura nhamba yeNLGI zvinoreva kuti girizi rinowedzera kusimba/kukora.
Consistency chiyero cheyakakosha yemuviri zvimiro zvegirisi inoratidza kuoma kwegirisi, iyo inogona kugadziriswa nekuchinja thickener zvemukati.
Iyo NLGI inowirirana nhamba yega haina kukwana kutsanangura girisi inodiwa neimwe application. Gara uchitarisa kubhuku remuridzi wako remhando yakakurudzirwa yegirisi.
Tafura inotevera inoratidza iyo NLGI kupatsanurwa uye inoenzanisa giredhi rega rega nezvigadzirwa zvemumba zvinofanana.
| NLGI giredhi (National Lubricating Grease Institute) NLGI kuenderana nhamba | |||
| NLGI | ASTM yakashanda (60 sitiroko) | Chitarisiko | Consistency chikafu analogi |
| kupinda pa25 °C | |||
| 000 | 445-475 | mvura | kubika mafuta |
| 00 | 400-430 | semi-fluid | apple muto |
| 0 | 355-385 | nyoro kwazvo | brown mustard |
| 1 | 310-340 | nyoro | tomato paste |
| 2 | 265-295 | "normal" mafuta | nzungu butter |
| 3 | 220-250 | firm | kupfupisa miriwo |
| 4 | 175-205 | zvakasimba kwazvo | yoghurt yakaoma |
| 5 | 130-160 | zvakaoma | smooth pâté |
| 6 | 85-115 | zvakaoma zvikuru | cheddar cheese |
NLGI Giredhi 000-NLGI 0 magirisi
Chikumbiro:NLGI Giredhi 000-NLGI 0 inokurudzirwa kune yakanyanya kudzvanywa, inorema-basa uye yakavharwa system.
Zvakanakira: Yakanakisa lubricity kuita, yakanaka kupomba, nani kupisa kupisa.
Zvakaipa: Zviri nyore kuoneka kupatsanurwa kwemafuta.
NLGI 1- 2
Kazhinji NIGI 2 ndiyo yakajairwa uye inonyanya kufarirwa kuenderana mune mazhinji emagirosi, ndiwo akajairwa magirisi. Asi mumashandisirwo anoshanda, kushandiswa kwakasiyana kana midziyo yakasiyana ichadiwa girisi yeNLGI yakasiyana.
Mabhenefiti: Yakasiyana-siyana maapplication, yakanaka colloidal kugadzikana
Consistency NLGI giredhi ≠Viscosity
Mutengi anobvunza: ndiri kutsvaga rimwe gobvu regirisi...
Fekitori yeLubircant: Unoda mamwe girisi "akaoma" kana mamwe "sticker" girisi?
Mutengi: Ndeupi musiyano pakati pezviviri izvi?
Chekutanga mamakisi eNLGI (Consistency &Penetration) ndeyezvigadzirwa zveGiresi chete
Uye viscosity ndeyekuzora mafuta kana mafuta ekutanga ezvigadzirwa zvegirisi.
NLGI mamakisi anoisa girizi yakapfava kana yakaoma, inomiririra girisi kutaridzika mamiriro.
viscosity inoronga girisi base mafuta viscosity, Inotaridza girizi viscosity, Iyo yakakwirira viscosity, uye girizi rinowedzera kunamira.
Kazhinji magirosi maviri anogona kunge aine giredhi rakafanana reNLGI asi akasiyana-siyana-oiri viscosity, nepo mamwe maviri anogona kunge aine akafanana base-oiri viscosity asi akasiyana NLGI mamakisi, ndiwo akajairika mamiriro mune zvigadzirwa zvegiresi.
Ndosaka taifanira kunzwisisa zvakanaka zvaidiwa nemutengi.