Xov xwm

Ntawm cov yas engineering, ib yam khoom siv sawv tawm rau nws qhov kev tiv taus hnav zoo tshaj plaws, kev tiv taus kev cuam tshuam, thiab cov khoom siv lubricating tus kheej, ua rau nws yog ib qho ntawm cov kev daws teeb meem zoo tshaj plaws rau cov xwm txheej ua haujlwm nyuaj. Ultra-high molecular weight polyethylene (UHMWPE) tau raug hloov mus ua daim ntawv, nthuav dav nws cov ntawv thov mus rau qib tsis tau muaj dua, ua lub luag haujlwm tseem ceeb hauv txhua yam los ntawm cov kab ke xa khoom hnyav mus rau cov kab ua zaub mov.

I. Nkag Siab Txog UHMWPE: "Ultra-High Molecular Weight" yog dab tsi?

UHMWPE tsis yog polyethylene ib txwm muaj. Nws lub hauv paus nyob hauv nws "qhov hnyav molecular siab heev" - nws cov saw molecular ntev dua 10 npaug ntawm cov polyethylene ib txwm muaj (HDPE), feem ntau tshaj 1.5 lab. Cov saw hlau molecular no tau sib txuas, tsim cov qauv molecular ruaj khov heev uas muab cov khoom siv nws cov khoom zoo kawg nkaus.

Daim ntawv UHMWPE yog ua los ntawm cov khoom siv zoo kawg no los ntawm kev sintering, nias, lossis extrusion. Nws cov tuab yog txij li ob peb millimeters mus txog ntau pua millimeters, ua tau raws li qhov xav tau ntawm ntau yam kev siv.

II. Tsib Lub Vaj Tse Zoo Tshaj Plaws ntawmDaim Ntawv UHMWPE

1. Kev Tiv Thaiv Kev Hnav Khaub Ncaws Zoo Kawg Nkaus: Qhov no yog qhov tshwj xeeb tshaj plaws ntawm UHMWPE. Nws qhov kev tiv thaiv kev hnav khaub ncaws siab dua li ntau yam hlau (xws li cov hlau carbon thiab cov hlau tsis xeb), 4-5 npaug ntawm nylon (PA), thiab 3 npaug ntawm polyoxymethylene (POM). Hauv cov chaw hnav khaub ncaws abrasive, nws yog "Vaj Ntxwv ntawm Yas."

2. Kev Tiv Thaiv Kev Cuam Tshuam Siab Heev: Txawm tias nyob rau qhov kub qis (-40 ° C lossis qis dua), nws lub zog cuam tshuam tseem siab heev, nqus tau kev co thiab kev poob siab yam tsis muaj kev tawg lossis tawg yooj yim.

3. Cov Khoom Siv Uas Zoo Tshaj Plaws Thiab Tsis Nplaum: Nws cov coefficient ntawm kev sib txhuam yog qis heev, zoo ib yam li dej, thiab nws muaj cov khoom tsis nplaum. Qhov no txo ​​qhov kev tiv thaiv thaum cov ntaub ntawv swb rau ntawm nws qhov chaw, tiv thaiv kev nplaum thiab txo qhov hnav thiab rhuav ntawm cov khoom siv thiab cov ntaub ntawv.

4. Kev Tiv Thaiv Tshuaj: Nws ua rau pom tias nws tiv taus xeb zoo heev rau feem ntau cov kua qaub, alkali, thiab ntsev, ua rau nws siv tau rau hauv cov chaw ua haujlwm corrosive xws li kev ua tshuaj.

6. Huv thiab tsis muaj tshuaj lom: Nws ua raws li US FDA thiab USDA daim ntawv pov thawj, tuaj yeem tiv tauj ncaj qha rau zaub mov thiab tshuaj, thiab siv dav hauv kev ua zaub mov thiab kev lag luam kho mob. Tib lub sijhawm, nws muaj kev nqus dej tsawg heev thiab tsis yooj yim rau cov kab mob yug me nyuam.

IV. Vim Li Cas Thiaj XaivDaim Ntawv UHMWPE? — Kev Sib Piv Nrog Hlau Thiab Lwm Yam Yas Engineering

1. Piv rau Hlau (piv txwv li, Carbon Steel, Stainless Steel):

Hnav-Resistant Ntau Dua: Nws lub neej ntev dua li ntawm cov hlau nyob rau hauv cov xwm txheej hnav abrasive.
Sib dua: Nws qhov ceev tsuas yog 0.93-0.94 g / cm³, 1/7 ntawm cov hlau, ua rau nws yooj yim dua rau kev teeb tsa thiab thauj.

Tsis muaj suab nrov: Nws ua haujlwm ntsiag to, tshem tawm lub suab nrov ntawm kev sib txhuam hlau.

Corrosion-Resistant: Nws yog xeb-resistant thiab chemically resistant.

2. Piv rau Lwm Cov Yas Engineering (piv txwv li, Nylon, Polyoxymethylene):

Hnav-Resistant Ntau Dua: Nws txoj kev hnav tsis kam yog ntau zaus dua.

Kev Sib Txhuam Qis Dua: Nws cov khoom siv lubricating tus kheej zoo dua.

Tiv taus kev cuam tshuam ntau dua: Nws cov txiaj ntsig tshwj xeeb tshaj yog pom tseeb ntawm qhov kub qis.

Daim ntawv UHMWPEyog ib lub tuam txhab loj uas muaj zog nyob ntsiag to hauv kev lag luam niaj hnub no. Txawm hais tias nws tsis tawv npaum li hlau, nws txoj kev tiv thaiv kev hnav tsis tau zoo thiab kev ua tau zoo ua rau nws yog ib tus neeg tseem ceeb hauv kev tiv thaiv kev hnav, txo kev siv hluav taws xob, thiab txhim kho kev ua haujlwm zoo. Txij li cov chaw tsuas zeb mus rau chav ua noj, los ntawm cov chaw tsim khoom mus rau chaw ua si, daim ntawv "super plastic" no lub zog tiv thaiv kev ua haujlwm ntev ntawm ntau yam khoom siv, ua rau nws yog "tus neeg saib xyuas kev hnav tsis tau" thiab "tus neeg tiv thaiv kev ntws" hauv kev lag luam.