Kev siv ntawm PTFE Qws

PTFE RodNta: Kev siv kub ntau yog dav heev (Celsius ntawm - 200 degrees txog +260 degrees);Cov tshuaj tiv thaiv feem ntau cov tshuaj tiv thaiv corrosiveness, tshwj tsis yog qee cov fluorides thiab alkalinity moltenmetal; Cov khoom siv zoo heev, kev laus ua haujlwm; Cov nplaim hluav taws zoo heev (Ua raws li ASTM-D635 thiab D470 xeem kauj ruam), hauv huab cua kom tswj tau raws li cov khoom siv hluav taws xob; Tsawg heev kev nqus dej……

PTFE-polytetrafluoroethylene tau tshawb pom los ntawm Dr. Roy Plunkett ntawm DuPont Research Laboratory thaum lub Plaub Hlis 6, 1938. Tus thawj PTFE tau txuas ntxiv tsim los ntawm Dupont thiab tso tawm raws li cov khoom lag luam hauv xyoo 1945.

Cov khoom no muaj zog tiv taus cov tshuaj corrosion thiab tuaj yeem tiv taus qhov kub siab tshaj 500 ° C. Ib qho ntawm PTFE thawj cov khoom hauv tsev yog "PTFE coated frying lauj kaub".Txawm hais tias lub lauj kaub ua haujlwm zoo heev, nws txawv ntawm PTFE rods thiab daim hlau peb muab.Nws yog txau rau ntawm yuav luag dub txheej, ntshiab PTFE rods thiab nplooj ntawv nyob rau hauv PTFE round bar chav valve pob yog ci dawb li cas siv muaj PTFE yas rods yuav ua li cas siv industrial PTFE yas rods PTFE gaskets thiab chav ntim.

Vim tias PTFE muaj qhov kub thiab txias thiab tshuaj lom neeg, nws feem ntau yog siv rau kev siv valve.Los ntawm qhov yooj yim chav / dej kub li qub mus rau qhov kub siab, cov dej tuav kev lag luam caustic chemical li qub.Cov khoom no yog semi-rigid rau rigid yas thiab tuaj yeem yooj yim machined - ib qho yooj yim siv yas.PTFE pas nrig tuaj yeem ua rau hauv qhov ua siab ntev rau feem ntau cov kab me me nrog ib txoj kab uas hla ntawm +.002 "/ — .00".Tshuaj tiv thaiv yog ib qho ntawm cov khoom tseem ceeb cuam tshuam nrog cov ntaub ntawv.Nyob rau hauv flakes los yog flakes, PTFE yog siv los ua cov khoom siv gasket rau kub kub thiab tshuaj tiv thaiv flanges thiab seals.