Bremen, Lub teb chaws Yelemees - Cov txheej txheem tshiab UltraPLAS tsim los ntawm Fraunhofer cov kws tshawb fawb tau ua pov thawj los ua qhov kev daws teeb meem rau cov teeb meem ntawm cov txheej txheem tsim thawj. Qhov kev tso tawm siab tshaj no thiab yooj yim-rau-huv txheej yog siv los ua cov txheej txheem gradient siv cov txheej txheem plasma txias thiab tsim nyog rau cov ntaub ntawv xws li cov cuab yeej steel, stainless hlau thiab txhuas. Lub cev lub cev tshwj xeeb ntawm UltraPLAS ua kom zoo meej molding ntawm txawm nano-scaled thiab reflective nto. Los ntawm kev txo tus naj npawb ntawm cov kauj ruam tom qab ua tiav thiab tshem tawm cov neeg sawv cev tawm sab nraud, daim ntawv thov raug cais raws li kev lag luam zoo heev.
Yuav ua li cas zoo thiab sophisticated cov cuab yeej nto yuav coated nyob rau hauv xws li ib tug txoj kev uas ntau lawm yog txhim kho, thiab ntxuav cov txheej txheem yog ho ncua los yog yooj yim? Cov kws tshawb fawb ntawm Fraunhofer Institute for Manufacturing Technology thiab Advanced Materials IFAM tau tshawb xyuas cov lus nug no ua ke nrog cov neeg koom tes hauv "GlossyCast" thiab "UltraTrenn" cov haujlwm tau txais nyiaj los ntawm Industrielle Gemeinschaftsforschung IGF. Lub hom phiaj ntawm kev tshawb fawb cov haujlwm yog los txo cov demolding rog thiab tsim cov deposits thaum mus tas li withstanding tshwj xeeb kev nyuaj siab ntawm zinc high-pressure tuag casting thiab yas txhaj molding.
Tshwj xeeb, kev txhaj tshuaj molding ntawm cov khoom siv yas yuav tsum muaj kev daws teeb meem los txo cov demolding rog thiab tsim cov deposits. Qhov no siv rau kev tsim cov khoom siv nrog cov khoom siv high-gloss los yog cov txheej txheem siab heev, xws li cov lo ntsiab muag yas, cov khoom siv kho kom zoo nkauj lossis cov khoom sib txuas nrog qhov raug siab. Ib yam li ntawd, nyob rau hauv zinc high-pressure tuag casting, deposits ntawm pwm nto thiab deposits ntawm tso cov neeg ua hauj lwm thiab lubricants tiv thaiv zus tau tej cov high-zoo, glossy zinc castings. Qhov no ua rau muaj nuj nqis ntau rau kev ua haujlwm tom qab ntawm cov khoom cam khwb cia. Tsis hais txog qhov no, daim ntawv thov tso tawm tus neeg sawv cev ib leeg tuaj yeem suav txog 20 feem pua ntawm lub sijhawm voj voog, txhais tau hais tias muaj peev xwm txuag tau ntau yog tias tsis tas yuav tso cov neeg sawv cev ntxiv lawm.
Yuav kom ua tau raws li qhov yuav tsum tau hais tseg saum toj no-profile ntawm ultra-smooth, qhov chaw kho qhov muag (Ra < 25 nm) hauv cov haujlwm, cov txheej txheem nws tus kheej yuav tsum du thiab tsis muaj qauv. Txhawm rau ua tiav qhov no, cov txheej txheem plasma txias, hu ua PE-CVD txheej txheem (plasma txhim kho cov tshuaj vapor deposition), tau siv. Los ntawm kev tsim cov txheej txheem gradient, cov txheej txheem no ua rau cov txheej txheem zoo adhesion rau cov khoom lub cev ntawm ib sab thiab tshwj xeeb uas tsis yog-stick zog nrog cov yam ntxwv zoo ntawm lub cev ntawm cov khoom ntawm lwm tus.
Cov txheej txheem tsim nyob rau hauv txoj kev no yog tus cwj pwm, piv txwv li, los ntawm kev hloov pauv siab ntawm elasticity (28 - 32 GPa) thiab qhov ntom ntom (1.5 g / cm³). Qhov no ua rau Mohs hardness ntau ntawm 5.5, uas yog vim li no ntawm par nrog iav los yog enamel. Yam ntxwv, raws li cov txheej txheem uas tsis yog-stick, nws kuj muaj lub zog qis (< 28 mN/m) with low polarity (< 1.5 mN/m).
Qhov kev coj cwj pwm no tau txais kev txhawb nqa los ntawm qhov tseeb tias Fraunhofer cov kws tshawb fawb tau ua tiav hauv kev tsim cov txheej txheem UltraPLAS nrog cov txheej nyias nyias ntawm tsawg dua 100 nm. Qhov no txawm ua pov thawj tias yog qhov tsim nyog hauv GlossyCast qhov project los muab cov nyhuv tsis zoo. Tsis tas li ntawd, cov txheej nyias nyias, tsis muaj txheej txheem tso cai rau ob qho tib si nanoscale nto qauv, piv txwv li, rau cov txheej txheem nanoimprint, thiab daim iav-gloss nto yuav ua tau zoo.
Kev sim ua kom dav siv tau ua ib feem ntawm cov haujlwm ntawm ntau lub tuam txhab kev lag luam tau pom tias demolding rog thiab tsim cov deposits raug txo nyob rau hauv kev txhaj tshuaj molding. Nws kuj tau pom tias qhov txo qis hauv adhesion rog txo tag nrho cov demolding rog. Yog li ntawd, qhov kub ntawm demolding tuaj yeem nce ntxiv, thiab qhov kev sib txhuam ntawm qhov txo qis.
Nyob rau hauv sib piv rau lub xeev ntawm cov kos duab, cov coatings yuav raug tshem tawm ob qho tib si zoo thiab maj mam siv plasma technology yog li ntawd, yog hais tias tsim nyog, ib tug tshiab txheej yuav siv tau ob peb zaug yam tsis muaj kev poob zoo. Qhov no yog qhov tshwj xeeb tshaj yog nthuav rau cov cuab yeej ua haujlwm siab, vim nws tshem tawm qhov xav tau rau lub sijhawm siv polishing lossis ultra-precision machining.
Nws kuj tau pom tias cov khoom siv ncaj qha ntawm cov khoom zoo zinc tuag-cam khwb cia siv cov cuab yeej siv tshuab tuaj yeem ua rau muaj txiaj ntsig zoo. Los ntawm kev txhim kho qhov zoo ntawm qhov chaw ntawm cov cam khwb cia, tus nqi thiab siv sij hawm siv cov khoom siv tom qab ua cov kauj ruam xws li blasting, sib tsoo, thiab polishing tuaj yeem yooj yim los yog zam tag nrho. Tsis tas li ntawd, tus txheej txheem ntawm tus kheej cov kauj ruam ntawm electroplating yuav luv luv los yog txo. Kev txhim kho ntawm qhov ruaj khov UltraPLAS tso tawm txheej rau zinc tuag casting sawv cev rau kev ua ntej tseem ceeb hauv kev tsim tshuab. Qhov muaj peev xwm ntawm kev txiav tawm cov neeg ua haujlwm qhib lub peev xwm tshiab rau kev txhim kho kev ua haujlwm zoo, txo cov nqi tsim khoom thiab ua rau ntau tus phooj ywg ib puag ncig.
Raws li cov khoom cam khwb cia yog tsim los tsis muaj cov neeg ua hauj lwm tso tawm, lub sij hawm ua ntej kho rau electroplating yog txo thiab cov khoom siv tau qis dua. Cov khoom tsim muaj qhov xav tau roughness. Vim lub smoother nto, ci tooj liab plating yuav dispensed nrog, uas ua rau kev txuag ntawm cov ntaub ntawv, lub sij hawm thiab dej khib nyiab. Txo cov txheej tuab ntawm tooj liab (cyanide) thiab ci npib tsib xee los ntawm 50 feem pua txhua tus coj mus rau kev txuag nyiaj ntxiv hauv cov ntaub ntawv thiab sijhawm.
Cov ntaub ntawv keeb kwm yav dhau los ntawm cov txheej txheem kev txhim kho: Kev txhim kho ntawm UltraPLAS tau ua ntej los ntawm PLASLON tsis-stick txheej, uas yog tus cwj pwm los ntawm kev nyuaj siab (Mohs hardness 4.5 - 5.5) thiab kub zoo heev tiv taus mus txog 230 degree. Cov cuab yeej profile no tau ua PLASLON ib qho nrov PFAS-dawb-dawb-ntxhiab txheej txheej rau cookware. Los ntawm kev nruam nruam thiab kev txhim kho cov khoom xws li UltraPLAS thiab PLASLON, peb lub koom haum ua rau muaj txiaj ntsig zoo rau kev txhim kho cov txheej txheem ntau lawm thiab txhawb kev ruaj khov hauv kev lag luam.