PA66GF25 Cov Nta Yog Li Cas Thiab Lawv Txeej Siv Rau Thermal Break Txheej Xwm

Cov Nta Yog Li Cas Thiab Cov Hlau Txeej Ntawm PA66GF25 Peb Ncav

PA66GF25 peb ncav sib txuas nrog polyamide 66 (PA66) nrog 25% hlau txuas nrog, tsim ib qho kev ua hauv ntim uas muaj kev huv siab ntawm 90 MPa— 20%ntau dua PA66 tsis muaj (ScienceDirect 2024). Qhov kev ua hauv zoo no tiv thaiv kev ua hauv ntim rau cov neeg ua hauv ntim txog 90°C, ua rau nws zoo rau siv rau cov neeg ua hauv ntim thiab kho cov ntim rau kev tsav dav hlau.

Thermal Conductivity Thiab Cov Nta Yog Li Cas Txeej Ntawm Kev Siv Rau Dav Hlau

PA66GF25 muaj qhov chaw siv tshuab kub nyob rau qhov twg li 0.29 W/m·K, txhais tau tias nws khaws kub tshuab tsis pub dhau los ntawm 98% feem ntawm aluminum alloys uas muaj qhov chaw siv kub nyob rau 160-200 W/m·K raws li cov kev xam pom tshiab. Qhov uas pab tau li no yog cov kab ntsug sib txig sib tov nyob hauv khoom no. Cov kab ntsug no txwv qhov polymer chains kom tsis txawj mus ob lossis tawm. Vim li no, khoom no tsuas yuav tshwm sim roj teeb tsis txog 0.6% thaum kub txias tuaj yeem ploj mus rau -30 degrees Celsius txog 90 degrees . Qhov tseem ceeb no pab khoom zoo ib yam thiab tsis txiav txim siab thaum siv ntev, thiab txeem ceeb rau qhov kho tseem ceeb uas xav tau rau cov raj mov thiab saub npheej uas kub txias feem ntau hnav.

Kev Tsis Pom Koj Zar Lij Thiab Kev Nyiam Siv Ntev Nyob Rau Hnub Ntxoov Ntxoo

Los ntawm nws qhov siv crystalline, PA66GF25 dhau ib qhov chaw tsis txom nyem tshuaj (ASTM D570) tsuas yog 1.3%, txawv li 6–9% uas feem ntau pom hauv nylon tsis muaj kev pab. Cov kev sim ua ntej tuag pom tias tsawg dua 5% ny loss ny kub twj los ntawm kev ntxoov ntxoo (85% RH nyob rau 85°C) tom qab 5,000 zaug, tso paub tias PA66GF25 muaj qhov txaus siab hauv kev tiv thaiv, tshwj tsis yog nyob rau sab nraud pob thiab qhov chaw muaj dej ntau.

Kev Txhim kho Kev Tshawb Nrhiav Extrusion rau PA66GF25 uas Muaj Ntau Lub Sijhawm Fiberglass

Kev Sauj Npav Kev Pab Thiaj Li Rau Kev Tso PA66GF25 Granule Nyob Ruaj Khov

Kev tso khoom nyob ruaj khov pib los ntawm cov khoom tso uas tau raug kho rau qhov xwm txheej txheem ntawm cov granules PA66GF25 uas muaj fiberglass. Thaum lub sijhawm fiber loj dua 25%, qhov risk ntawm kev tso zog thiab kev faib tseem ceeb tsha tsha, uas txhawj xeeb tias yuav tsum muaj hopper pab los ntawm vacuum thiab cov cuab yeej siv rau kev tso. Ib qho kev suav xyuas hmo ntuj 2023 pom tias ±0.5% ntawm qhov accuracy gravimetric yuav cuam tshuam rau kev extrusion tsawg dua 34%, uas tig tig tso kom meej meej dua.

Kev Xam Koj Kev Ntsuas Txheej Txheem Barrel Thiab Qhov Txhawb Ceev ntawm Kev Siv

Txoj caij tsis hlo tshaj tawm ntawm PA66GF25, nyob rau sab 12,000 mus rau 15,000 Pa.s thaum tso tawm rau 280 degrees Celsius, txhais tau hais tias tus kws tsim khoom xav tau kev coov pob txaus siab ntawm qhov caij tawm rau hauv ib txheej chav sib txawv rau hauv phab ntsa, feem ntau tseem ceeb rau kom meej nyob rau hauv ib dua los yog ib minus degrees. plaiv sib txawv minus 1degrees ib qhov chaw feem ntau tuaj yeem mus rau qhov 2 50 degrees kom cuam tshuam nrog qhov kub thiab tsis txhob muab rau qhov tshwm sim. Tom qab ntawd chav ob thiab plaiv yuav tsum rov kawv mus rau qhov 290 degrees kom cov crystal structures yuav raug thawj tas li.

Screw Speed, Residence Time, and Shear Control

Qhov kev pib zoo tagnrho ntawm 40–60 RPM yuav tshem tsis tau kev kuaj xyuas fiber breakage uas tx caused by shear loss, thaum twg kawm kev sib dhos tshuaj tseg, tshem tsis tau qhov ntev ntawm fiber loss nyob qhov tsawg dua 3%. Lub 2024 Extrusion Efficiency Report pom tias 90-second residence time yuav pib siab tshaj plaws rau kev faib cov filler thiab kev ruaj ntseg ntawm qhov thawj. High-compression screws (28:1 L/D ratio) nyawv kev siv hluav taws xob zoo dua li 22% kom ntau dua li cov kho rau tshuab tsim nyog.

Kev tsim kho thiab sau ua phau ntawv rau cov duab ntoo sib txig sib tsoo rau cov duab ntoo kheej kheej

Kev kho duab rau cov duab ntoo kheej kheej uas muaj duab ntxoog ntxoog

Cov duab ntoo kheej kheej feem ntau muaj cov chaw ntxoog ntxoog thiab cov ntxoog sab nraud, uas txhais tau tias yuav tsum muaj duab ntoo kho rau kev ua tiav. Cov nkeeg tshuaj xyuas CAD/CAM loj dua tuaj yeem txiav txim siab nrog rau qhov 2.3% ntawm PA66GF25 tom qab khi (Vej Vaj Hlis Cai Tshuaj 2023), kom paub meej tias qhov ntev pli thiab pom zoo raws standards EN 14024. Wire EDM (Electrical Discharge Machining) pab tau qhov tsis muaj le nuav ±0.02 mm hauv duab ntoo, uas yog yam tseem ceeb rau cov duab ntxoog ntxoog.

Duab ntoo zoo uas tsis tu ncua rau PA66GF25

Qhov muaj 25% sib txig kab nrog fiber nyau los ntawm 40% dhau hauv cov polymer tsis muaj. Txhawm rau tswj lub cuab yeej no, cov kws tshaj lij hauv cheeb tsam siv cov xaum tshuab carbide muab ntxiv rau cov xaum tshuab tool steels uas muaj HVOF (High-Velocity Oxygen Fuel) coatings, kom roj zaub plua pluaj hauv qhov chaw muaj siab ntau los ntawm 65%. Cov kev kho mob pob npawb zoo li chromium nitride plating tuaj yeem tso caij loj mus rau 12,000–15,000 teev hauv kev tsim khoom.

Kev sim kab thiab kev kho sim rau kev extrusion sib xws

Cov cuab yeej sim zoo li Moldflow® thiab Autodesk® sim kev dhau los ntawm cov ntim ntau (15–25 mm), kev txiav txim siab saib xyuas qhov chaw kho tiam kom sib piv thiab tiv thaiv kev ntxhiav rau hauv cov duab tsis sib xws. Cov sensors siab hauv yuam kev nyob sab hauv qhov chaw ntim siab ntawm 45–55 MPa, kom tso caij sib luag sib luag thiab kev nyab xeeb ntawm cov fiber.

Kev tswj xyuas tiv thaiv kom tau siab tshaj rau kev siv lub mold

Kev tswj xyuas tiv thaiv hnav hli tshaj tawm yog 78% txog PA66GF25 molds (kev suav hauv kev tsim khoom hauv xyoo 2023). Qhov tseem ceeb tshaj plaws yog kev saib xyuas tsab cov kab thiab sau lub siab ntau los ntawm kev saib xyuas CMM. Cov chaw tso dej siv cov dej tso deb uas muaj qhov ceev siab tshaj plaws txhim kho lub teb ntawv thiab cov cuab yeej tso tawm kom tsis txhob muaj kev puas tsuaj.

Keem Ntxig Qhov Chaw Pib: Nrhiav kev ua lej meej meej hauv kev sau thiab kev sau ntev

Cov txuj ci ntxig meej meej thiab kev sau ntev

PA66GF25 muaj kev lag luam nyooj (0.2–0.4% tom qab sov dav) uas pab tau rau kev ua lej meej meej (±0.1 mm) hauv kev ntxig. Cov ntaub ntawv sau nrog CNC muaj kev hloov pauv rau kev hloov pauv ntawm cov ntaub, tshpecially hauv cov duab tsis zoo. Lub xab lus ntawm Polymer Engineering & Science (2022) pom tseeb tias kev tswj qhov ceev ntawm die-plate nyob ib puag ncig 25–30°C thaum sau ntev yuav txo kev ntxhais siab los ntawm 60% hauv cov polyamides muaj roj ces.

Txo kev puas tsuaj ntawm sab nraud thaum kev sau ntev nrog kev ntev siab

Thiab chiv fab tshaj 12 meters per minute, tus heat uas tsim los ntawm friction feem ntau loj dua 150 degrees Celsius, uas ua rau kev nthuav dav ntawm qhov chaw yuav tsum tau meej. Qhov txheeb xyuas? Siv ob kauj ruam kom sov tsaus ntxoog: siv du dej tsaus ntxoog los npaj qhov chaw sau nrog ib tshiab ntawm ib feeb, thiab siv cov blade angles uas tsim tshiab los ntawm computer simulations hauv tus machine. Cov kev hloov no pab tiv thaiv cov fibers tsis txhob rov qab thaum kev tsim khoom. Lub tsev kho tsev kho tsev published ntau xyoo las hauv lub Journal of Materials Processing Technology tau pom ib yam tiag tiag zoo. Cov blades uas muaj carbide tip thiab muaj 65 degree angle nyuaj siab tshem qhov surface roughness los ntawm 34 percent hnub ntev li cov steel tools tshaib. Qhov kev pab hloov no muaj txiaj ntsig loj rau kev trol tus cwj pwm hauv kev tsim khoom.

Sib cuag Line Control thiab Quality Assurance rau Continuous Production

Synchronizing Extrusion, Cutting, and Winding with Automated Controls

Kev nyiaj sib luag ntawm kev tshuab, kho, thiab cua kom muaj kev sib txig sib luag los ntawm kev siv cov PLC systems uas txig txim kev ncav ncav ntawm cov motor, teeb meej kub, thiab li tso tawm.

Cov ntsiab lus tsha tshaj: AI Based Anomaly Detection nyob rau hauv PA66GF25 Kev tsim khoom

Cov ntaub ntawv tshiab tshaj plaws hauv qhov kev sib txig sib luag, tom qab khiav cai ntau dua ib tug kawg (ntau dua 40,000), tuaj yeem pom kom paub tias lub lag cu yuav rov los thaiv ntau npaum li cas ua ke nrog kev ncaj ncees txog 94%. lawv kuj pom tias tus leej nqi nyiag yuav raug xyhaum ntau dua li 8 rau 12 teev ua ntej yuav raug xyhaum. nyob rau ib chaw kho tshuaj xyuas tau piav hais tias kev sau npe rau kev nres tsheb tau txo cov khoom siv tshaib tshaj li 21% txaus li 2023 xwb. lub chaw kho tshuaj no siv cov technology no los nrhiav tau cov teeb meem uas muaj nyob hauv kev sib tso tseg ntawm cov kab ntsa tshuaj hauv cov khoom siv, uas yog qhov uas tau tsim teeb meem ntau heev rau ib xyoo. cov lus nug no sau tias muaj ib qho kev tshwm sim tshiab uas tej pa ub pa ub tshaj plaws tau yooj yim ntau dua rau kev coj mus siv hauv kev tsim khoom thiab kev pab txhim kho kev tsim khoom.