Izinto Eziyisisekelo Zokuthambisa
Iyini i-NLGI yamafutha uma Ifika emafutheni?
I-National Lubricating Grease Institute (NLGI) isungule ukuhlukaniswa okujwayelekile okukhethekile kwamafutha okugcoba. Inombolo ye-NLGI engaguquguquki (eyaziwa ngokuthi “ibanga le-NLGI”) esezingeni lesilinganiso sokuqina okuhlobene kwegrisi esetshenziselwa ukuthambisa. Inani elikhulu lenombolo ye-NLGI okusho ukuthi amafutha aqina kakhulu/aminyene.
Ukungaguquguquki isilinganiso sezinto ezibonakalayo eziyisisekelo zamafutha akhombisa ubulukhuni bamafutha, okungalungiswa ngokushintsha okuqukethwe okujiya.
Inombolo yokuvumelana ye-NLGI iyodwa ayanele ukucacisa amafutha adingwa uhlelo oluthile. Ngaso sonke isikhathi bheka imanuwali yomnikazi wakho ukuze uthole uhlobo olunconyiwe lwamafutha.
Ithebula elilandelayo libonisa ukuhlukaniswa kwe-NLGI futhi liqhathanisa ibanga ngalinye nemikhiqizo yasendlini yokungaguquguquki okufanayo.
| Ibanga le-NLGI (National Lubricating Grease Institute) izinombolo ze-NLGI ezingaguquguquki | |||
| I-NLGI | I-ASTM isebenzile (imivimbo engama-60) | Ukubukeka | I-analog yokudla engaguquguquki |
| ukungena ku-25 °C | |||
| 000 | 445-475 | uketshezi | amafutha okupheka |
| 00 | 400-430 | i-semi-fluid | i-apula sauce |
| 0 | 355-385 | ithambile kakhulu | lwesinaphi esinsundu |
| 1 | 310-340 | ethambile | unamathisele utamatisi |
| 2 | 265-295 | amafutha "ejwayelekile". | Ibhitela lamantongomane |
| 3 | 220-250 | iqinile | ukunciphisa imifino |
| 4 | 175-205 | iqine kakhulu | iyogathi eqandisiwe |
| 5 | 130-160 | kanzima | i-pâté ebushelelezi |
| 6 | 85-115 | kanzima kakhulu | cheddar ushizi |
NLGI Grade 000-NLGI 0 amafutha
Isicelo :I-NLGI Grade 000-NLGI 0 inconywa ngomfutho ophezulu, umsebenzi osindayo kanye nesistimu evaliwe.
Izinzuzo: Ukusebenza okugqamile kokuthambisa, ukumpompa okuhle, ukunqanyulwa kokushisa okungcono.
Ukungalungi: Kulula ukubonakala ukuhlukaniswa kwamafutha.
I-NLGI 1- 2
Imvamisa i-NIGI 2 iwukungaguquguquki okujwayelekile nokuthandwa kakhulu kumagrisi amaningi, kungamafutha ajwayelekile. Kepha ezinhlelweni ezisebenzayo, ukusetshenziswa okuhlukile noma izinto ezisetshenziswayo ezahlukahlukene kuzodingeka amafutha ahlukahlukene e-NLGI.
Izinzuzo: Uhlu olubanzi lwezinhlelo zokusebenza, ukuzinza okuhle kwe-colloidal
Ukuvumelana kwebanga le-NLGI ≠I-Viscosity
Ikhasimende liyabuza :Ngifuna amagrisi awodwa...
Ifekthri Yokuthambisa :Ingabe ufuna amafutha “aqina” kakhulu noma amanye amafutha “okunamathela kakhulu”?
Ikhasimende: Uyini umehluko phakathi kwalokhu okubili?
Okokuqala amamaki e-NLGI (I-Consistency &Penetration) awemikhiqizo yeGrisi kuphela
Futhi i-viscosity ingeyamafutha okugcoba noma amafutha ayisisekelo emikhiqizo yamafutha.
Amabanga e-NLGI ahlukanisa amafutha athambile noma aqinile, amele isimo sokubukeka kwamafutha.
I-viscosity ihlukanisa i-grease base viscosity, Inquma i-viscosity yamafutha, I-viscosity ephakeme kakhulu, futhi amafutha anamathela kakhulu.
Ngokuvamile ama-greases angu-2 angase abe nebanga elifanayo le-NLGI kodwa ama-viscosity esisekelo samafutha ahluke kakhulu, kuyilapho amanye amabili angase abe ne-viscosity efanayo yamafutha ayisisekelo kodwa amamaki e-NLGI angafani, leso isimo esivamile emikhiqizweni yamafutha.
Yingakho bekumele sikuqonde kahle isidingo sangempela sekhasimende.