{"id":16642,"date":"2026-03-20T08:42:31","date_gmt":"2026-03-20T08:42:31","guid":{"rendered":"https:\/\/www.jet-mills.com\/?p=16642"},"modified":"2026-03-20T08:44:57","modified_gmt":"2026-03-20T08:44:57","slug":"jet-milling-peek-and-high-performance-polymer-powders","status":"publish","type":"post","link":"https:\/\/www.jet-mills.com\/tr\/jet-milling-peek-and-high-performance-polymer-powders\/","title":{"rendered":"Jet \u00d6\u011f\u00fctme Y\u00f6ntemiyle PEEK ve Y\u00fcksek Performansl\u0131 Polimer Tozlar\u0131n\u0131n \u0130\u015flenmesi"},"content":{"rendered":"

PEEK (polietereterketon) 343 santigrat derecede erir ve 143 santigrat derecede cam ge\u00e7i\u015f s\u0131cakl\u0131\u011f\u0131na sahiptir. Bu de\u011ferlerin hi\u00e7biri ta\u015flama i\u00e7in ge\u00e7erli e\u015fik de\u011fer de\u011fildir. Ge\u00e7erli e\u015fik de\u011fer yakla\u015f\u0131k 80-100 santigrat derecedir: mekanik gerilim alt\u0131nda par\u00e7ac\u0131k temas y\u00fczeylerinde lokal yumu\u015faman\u0131n ba\u015flad\u0131\u011f\u0131 nokta. Ta\u015flama s\u0131ras\u0131nda bu e\u015fi\u011fe ula\u015f\u0131ld\u0131\u011f\u0131nda, par\u00e7ac\u0131klar k\u0131r\u0131lmak yerine birbirine kaynaklan\u0131r. Sonu\u00e7 olarak, topaklar, geni\u015f bir par\u00e7ac\u0131k boyutu da\u011f\u0131l\u0131m\u0131 ve lazer sinterleme veya kompozit i\u015fleme i\u00e7in ince bir polimer tozunun ihtiya\u00e7 duydu\u011fu \u015fekilde ak\u0131\u015fkanl\u0131\u011f\u0131n\u0131 kaybeden bir malzeme elde edilir.<\/p>\n\n\n\n

Bilyal\u0131 de\u011firmenler, \u00e7eki\u00e7li de\u011firmenler ve pimli de\u011firmenler gibi geleneksel mekanik \u00f6\u011f\u00fctme y\u00f6ntemleri s\u00fcrt\u00fcnme ve darbe yoluyla \u0131s\u0131 \u00fcretir. Kalsiyum karbonat veya kuvars i\u00e7in bu \u0131s\u0131 kontrol edilebilir d\u00fczeydedir. Ancak PEEK i\u00e7in bu, birincil ar\u0131za nedenidir. \u0130\u015fte bu y\u00fczden... jet freze<\/a> Ultra ince PEEK tozu \u00fcretimi i\u00e7in tercih edilen teknolojidir. \u00d6\u011f\u00fctme mekanizmas\u0131, metal-metal \u00e7arp\u0131\u015fmas\u0131 de\u011fil, y\u00fcksek h\u0131zl\u0131 gaz jetleri taraf\u0131ndan y\u00f6nlendirilen par\u00e7ac\u0131k-par\u00e7ac\u0131k \u00e7arp\u0131\u015fmas\u0131d\u0131r. Genle\u015fen gaz, nozullardan \u00e7\u0131karken so\u011fur. \u00d6\u011f\u00fctme b\u00f6lgesi so\u011fuk kal\u0131r. PEEK yumu\u015famak yerine temiz bir \u015fekilde k\u0131r\u0131l\u0131r.<\/p>\n\n\n\n

Bu makale, jet \u00f6\u011f\u00fctmenin \u00f6zellikle y\u00fcksek performansl\u0131 polimerler i\u00e7in nas\u0131l \u00e7al\u0131\u015ft\u0131\u011f\u0131n\u0131, PEEK i\u00e7in parametrelerin nas\u0131l ayarlanaca\u011f\u0131n\u0131, her uygulama i\u00e7in hangi par\u00e7ac\u0131k boyutu hedeflerinin ula\u015f\u0131labilir ve ger\u00e7ek\u00e7i oldu\u011funu ve teknolojinin kriyojenik \u00f6\u011f\u00fctme de dahil olmak \u00fczere alternatiflerle nas\u0131l kar\u015f\u0131la\u015ft\u0131r\u0131ld\u0131\u011f\u0131n\u0131 ele almaktad\u0131r. EP\u0130K Tozu<\/a> Makine tedarik\u00e7imiz, PEEK, PTFE, poliimid ve di\u011fer m\u00fchendislik polimer uygulamalar\u0131 i\u00e7in ak\u0131\u015fkan yatakl\u0131 jet de\u011firmenleri \u00fcretmektedir.<\/p>\n\n\n\n

\"\"<\/figure>\n\n\n\n

PEEK'in \u00d6\u011f\u00fct\u00fclmesinin Zor Olmas\u0131n\u0131n Nedenleri ve Geleneksel \u00d6\u011f\u00fctme Y\u00f6ntemlerinin Ba\u015far\u0131s\u0131z Oldu\u011fu Noktalar<\/h2>\n\n\n\n

Mineraller, seramikler, metaller gibi \u00e7o\u011fu sert malzeme, \u00f6nemli bir plastik deformasyon olmaks\u0131z\u0131n darbe y\u00fcklemesi alt\u0131nda k\u0131r\u0131lmalar\u0131 anlam\u0131nda k\u0131r\u0131lgand\u0131r. Akma noktas\u0131n\u0131n \u00fczerinde gerilim uygulamak, par\u00e7ac\u0131k boyutunu k\u00fc\u00e7\u00fclten \u00e7atlak yay\u0131lmas\u0131na neden olur. PEEK b\u00f6yle de\u011fildir. Yar\u0131 kristal bir termoplastiktir: hem viskoelastik olan amorf b\u00f6lgelere hem de daha sert ve daha k\u0131r\u0131lgan olan kristal b\u00f6lgelere sahiptir. Mekanik darbe alt\u0131nda, amorf b\u00f6lgeler k\u0131r\u0131lmak yerine plastik deformasyon yoluyla enerjiyi emer. Sonu\u00e7 olarak, PEEK \u00f6\u011f\u00fctme enerjisini yeni par\u00e7ac\u0131k y\u00fczeylerine d\u00f6n\u00fc\u015ft\u00fcrmek yerine da\u011f\u0131t\u0131r.<\/p>\n\n\n\n

PEEK malzemesi geleneksel mekanik de\u011firmenlerde \u00f6\u011f\u00fct\u00fcld\u00fc\u011f\u00fcnde \u00fc\u00e7 \u00f6zel sorun ortaya \u00e7\u0131kar:<\/p>\n\n\n\n

    \n
  • Is\u0131 kaynakl\u0131 k\u00fcmelenme: <\/strong>Par\u00e7ac\u0131klar\u0131 par\u00e7alamaya yetmeyen enerji, temas noktas\u0131nda \u0131s\u0131ya d\u00f6n\u00fc\u015f\u00fcr. Y\u00fcksek h\u0131zl\u0131 \u00e7arpma s\u0131ras\u0131nda, ortam s\u0131cakl\u0131\u011f\u0131n\u0131n \u00e7ok \u00fczerinde yerel y\u00fczey s\u0131cakl\u0131klar\u0131 olu\u015fur. Yumu\u015fayan par\u00e7ac\u0131k y\u00fczeyleri birbirine kaynaklanarak, orijinal beslemeden daha b\u00fcy\u00fck topaklar olu\u015fturur; de\u011firmen tozu daha ince de\u011fil, daha kaba hale getirir.<\/li>\n\n\n\n
  • Metal kirlili\u011fi: <\/strong>PEEK, ppm d\u00fczeyinde metal iyonu kirlili\u011finin \u00f6nemli oldu\u011fu t\u0131bbi implantlarda, havac\u0131l\u0131k yap\u0131lar\u0131nda ve yar\u0131 iletken bile\u015fenlerde kullan\u0131l\u0131r. Sert polimerlerin i\u015flenmesi s\u0131ras\u0131nda \u00e7elik veya sertle\u015ftirilmi\u015f demir ta\u015flama y\u00fczeylerinde \u00f6l\u00e7\u00fclebilir a\u015f\u0131nma meydana gelir. Bu kirlilik end\u00fcstriyel dolgu maddeleri i\u00e7in kabul edilebilir olabilir, ancak t\u0131bbi veya elektronik s\u0131n\u0131f\u0131 PEEK tozu i\u00e7in kabul edilemez.<\/li>\n\n\n\n
  • Geni\u015f, kontrol edilemeyen PSD: <\/strong>PEEK hammaddesinin bir k\u0131sm\u0131 k\u0131r\u0131lmak yerine topakland\u0131\u011f\u0131 i\u00e7in, \u00f6\u011f\u00fctme s\u0131ras\u0131nda par\u00e7ac\u0131k boyutu da\u011f\u0131l\u0131m\u0131 giderek geni\u015fler. D97 artarken, D50 yaln\u0131zca yava\u015f\u00e7a incelir. Sonu\u00e7 olarak, lazer sinterleme veya implant \u00fcretimi i\u00e7in gerekli olan s\u0131k\u0131 par\u00e7ac\u0131k boyutu da\u011f\u0131l\u0131m\u0131 \u00f6zelliklerini kar\u015f\u0131lamayan bir \u00fcr\u00fcn elde edilir.<\/li>\n<\/ul>\n\n\n\n

    Jet Frezeleme Y\u00f6ntemi PEEK Ta\u015flama Sorununu Nas\u0131l \u00c7\u00f6z\u00fcyor?<\/h2>\n\n\n\n

    Joule-Thomson Etkisi: \u00d6\u011f\u00fctme B\u00f6lgesi Neden So\u011fuk Kal\u0131r?<\/h3>\n\n\n\n

    Ak\u0131\u015fkan yatakl\u0131 jet de\u011firmeninde, s\u0131k\u0131\u015ft\u0131r\u0131lm\u0131\u015f gaz (hava veya azot) 4-8 bar bas\u0131n\u00e7ta nozullara beslenir ve \u00e7\u0131k\u0131\u015fta s\u00fcpersonik h\u0131za ula\u015f\u0131r. Y\u00fcksek bas\u0131n\u00e7l\u0131 bir gaz nozuldan h\u0131zla genle\u015fti\u011finde so\u011fur - bu Joule-Thomson etkisidir. PEEK i\u00e7in kullan\u0131lan \u00f6\u011f\u00fctme bas\u0131n\u00e7lar\u0131nda, nozul \u00e7\u0131k\u0131\u015f\u0131ndaki gaz s\u0131cakl\u0131\u011f\u0131 0 ila -20 santigrat dereceye d\u00fc\u015fer. Bu so\u011fuk gaz\u0131n s\u00fcrekli ak\u0131\u015f\u0131 ile korunan \u00f6\u011f\u00fctme b\u00f6lgesi, PEEK y\u00fczeylerinin yumu\u015famaya ba\u015flad\u0131\u011f\u0131 s\u0131cakl\u0131\u011f\u0131n \u00e7ok alt\u0131nda kal\u0131r.<\/p>\n\n\n\n

    Pratik sonu\u00e7: PEEK par\u00e7ac\u0131klar\u0131 y\u00fcksek h\u0131zda \u00e7arp\u0131\u015f\u0131r ve deforme olmak yerine k\u0131r\u0131l\u0131r. So\u011fuk ta\u015flama b\u00f6lgesi ayr\u0131ca k\u00fcmelenmeyi de \u00f6nler; zaten ince olan ve y\u00fcksek s\u0131cakl\u0131kta yap\u0131\u015fma e\u011filiminde olan par\u00e7ac\u0131klar, so\u011fuk, t\u00fcrb\u00fclansl\u0131 gaz ak\u0131\u015f\u0131nda ayr\u0131 kal\u0131r. \u00dcr\u00fcn par\u00e7ac\u0131k boyutu da\u011f\u0131l\u0131m\u0131, ayn\u0131 malzemenin ortam s\u0131cakl\u0131\u011f\u0131nda mekanik ta\u015flamas\u0131yla elde edilebilecek olandan daha dard\u0131r.<\/p>\n\n\n\n

    Par\u00e7ac\u0131k-Par\u00e7ac\u0131k \u00d6\u011f\u00fctme: S\u0131f\u0131r Metal Temas\u0131<\/h3>\n\n\n\n

    Jet de\u011firmenindeki boyut k\u00fc\u00e7\u00fcltme mekanizmas\u0131 tamamen par\u00e7ac\u0131klar aras\u0131 \u00e7arp\u0131\u015fmaya dayan\u0131r. Gaz jetleri, PEEK par\u00e7ac\u0131klar\u0131n\u0131 birbirleriyle \u00e7arp\u0131\u015ft\u0131klar\u0131 yak\u0131nla\u015fan ak\u0131mlara do\u011fru h\u0131zland\u0131r\u0131r. \u00dcr\u00fcnle temas eden tek kat\u0131 y\u00fczeyler, de\u011firmen haznesi duvar\u0131, s\u0131n\u0131fland\u0131r\u0131c\u0131 \u00e7ark ve nozul tertibat\u0131d\u0131r; bunlar\u0131n hi\u00e7biri y\u00fcksek enerjili \u00e7arp\u0131\u015fma b\u00f6lgesinde de\u011fildir. Seramik kapl\u0131 bir konfig\u00fcrasyonda, devrenin hi\u00e7bir noktas\u0131nda \u00fcr\u00fcnle metal temas\u0131 olmaz.<\/p>\n\n\n\n

    T\u0131bbi ama\u00e7l\u0131 kullan\u0131lan ve nihayetinde bir hastaya implante edilecek veya giri\u015fimsel bir cihazda kullan\u0131lacak olan PEEK tozu i\u00e7in metal kontaminasyonunun olmamas\u0131 bir zorunluluktur. PEEK'in biyolojik uyumlulu\u011fu, seramik veya polimer kapl\u0131 jet de\u011firmen y\u00fczeylerinin asla olu\u015fturmad\u0131\u011f\u0131 Fe, Cr, Ni ve di\u011fer metal iyonlar\u0131n\u0131n yoklu\u011funa ba\u011fl\u0131d\u0131r.<\/p>\n\n\n\n

    Entegre S\u0131n\u0131fland\u0131rma: D97 ve D50'nin Her \u0130kisi de Kontrol Edilebilir<\/h3>\n\n\n\n

    Ak\u0131\u015fkan yatakl\u0131 jet de\u011firmeninde yerle\u015fik bir dinamik s\u0131n\u0131fland\u0131r\u0131c\u0131 \u00e7ark bulunur. Boyut spesifikasyonuna uyan ince par\u00e7ac\u0131klar \u00e7arktan ge\u00e7er ve \u00fcr\u00fcn toplama sistemine \u00e7\u0131kar. B\u00fcy\u00fck boyutlu par\u00e7ac\u0131klar santrif\u00fcjlenerek \u00f6\u011f\u00fctme b\u00f6lgesine geri g\u00f6nderilir. S\u0131n\u0131fland\u0131r\u0131c\u0131 \u00e7ark h\u0131z\u0131, D50 i\u00e7in birincil kontrol de\u011fi\u015fkenidir; daha y\u00fcksek h\u0131z daha ince bir \u00fcr\u00fcn \u00fcretir. \u00d6\u011f\u00fctme gaz\u0131 bas\u0131nc\u0131 ve besleme h\u0131z\u0131, verimi ve da\u011f\u0131l\u0131m\u0131n \u015feklini etkileyen ikincil de\u011fi\u015fkenlerdir.<\/p>\n\n\n\n

    Bu kapal\u0131 devre tasar\u0131m, PEEK tozunun hedef boyuta ula\u015fmak i\u00e7in gereken s\u00fcrenin \u00f6tesinde de\u011firmende kalma s\u00fcresinin birikmesini \u00f6nler. Par\u00e7ac\u0131klar yeterince ince hale gelir gelmez d\u0131\u015far\u0131 at\u0131l\u0131r. Uzun s\u00fcreli \u00f6\u011f\u00fctmeden kaynaklanan kademeli \u0131s\u0131 birikimi olmaz ve s\u0131n\u0131fland\u0131rma ad\u0131m\u0131, par\u00e7ac\u0131klar spesifikasyona ula\u015ft\u0131klar\u0131nda onlar\u0131 hemen uzakla\u015ft\u0131rd\u0131\u011f\u0131 i\u00e7in hi\u00e7bir par\u00e7ac\u0131k a\u015f\u0131r\u0131 \u00f6\u011f\u00fct\u00fclmez.<\/p>\n\n\n\n

    Uygulamaya G\u00f6re Par\u00e7ac\u0131k Boyutu Gereksinimleri \u2014 Ger\u00e7ekte Neler Elde Edilebilir?<\/h2>\n\n\n\n

    Orijinal taslakta, do\u011frudan ele al\u0131nmas\u0131 gereken bir ger\u00e7ek hatas\u0131 vard\u0131: Lazer sinterleme i\u00e7in D50 de\u011ferini ~45 \u03bcm olarak 'ultra ince' olarak tan\u0131mlarken, ayn\u0131 makalede ultra inceli\u011fi 10 \u03bcm'nin alt\u0131nda olarak da tan\u0131mlam\u0131\u015ft\u0131. Bunlar farkl\u0131 uygulamalar olup farkl\u0131 par\u00e7ac\u0131k boyutlar\u0131 gerektirir. A\u015fa\u011f\u0131daki tablo do\u011fru \u00f6zellikleri g\u00f6stermektedir.<\/p>\n\n\n\n

    Ba\u015fvuru<\/strong><\/td>Tipik D50 Hedefi<\/strong><\/td>Tipik D97 Hedefi<\/strong><\/td>Bu Par\u00e7ac\u0131k Boyutunun Nedeni<\/strong><\/td><\/tr>
    Lazer sinterleme \/ SLS 3D bask\u0131<\/td>45-90 \u00b5m<\/td><120 \u00b5m<\/td>Toz, toz yata\u011f\u0131nda d\u00fczg\u00fcn bir \u015fekilde akmal\u0131 ve s\u0131k\u0131\u015fmal\u0131d\u0131r; \u00e7ok ince toz, ak\u0131\u015fkanl\u0131\u011f\u0131 olumsuz etkiler.<\/td><\/tr>
    Polimer kompozit emdirme<\/td>5-15 \u00b5m<\/td><30 \u00b5m<\/td>\u0130nce toz, prepreg ve filament sarma i\u015flemlerinde liflerin \u0131slanmas\u0131n\u0131 ve bo\u015fluk olu\u015fumunu azalt\u0131r.<\/td><\/tr>
    Kaplamalar ve y\u00fczey i\u015flemleri<\/td>3-10 \u00b5m<\/td><20 \u00b5m<\/td>\u0130nce par\u00e7ac\u0131k boyutu, kaplama yap\u0131\u015fmas\u0131n\u0131 iyile\u015ftirir ve y\u00fczey p\u00fcr\u00fczl\u00fcl\u00fc\u011f\u00fcn\u00fc azalt\u0131r.<\/td><\/tr>
    T\u0131bbi implant \u00fcretimi<\/td>1-5 \u00b5m<\/td><15 \u00b5m<\/td>\u0130nce toz, neredeyse nihai \u015fekle yak\u0131n preslemeye olanak tan\u0131r; y\u00fczey alan\u0131, biyoaktif molek\u00fcl a\u015f\u0131lama i\u015flemini destekler.<\/td><\/tr>
    Tribolojik katk\u0131 maddeleri (ya\u011flay\u0131c\u0131 dolgu maddesi)<\/td>1-5 \u00b5m<\/td><10 \u00b5m<\/td>Ultra ince toz, topaklanma olmaks\u0131z\u0131n ya\u011flay\u0131c\u0131 veya polimer matris i\u00e7inde da\u011f\u0131l\u0131r.<\/td><\/tr>
    Membran ve filtrasyon bile\u015fenleri<\/td><3 um<\/td><8 \u00b5m<\/td>\u0130nce ve homojen toz, sinterlenmi\u015f PEEK membran yap\u0131lar\u0131nda kontroll\u00fc g\u00f6zeneklilik sa\u011flar.<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

    Not: Lazer sinterleme y\u00f6ntemiyle \u00fcretilen PEEK tozu (D50 45-90 \u00b5m), genellikle jet \u00f6\u011f\u00fctme yerine kriyojenik \u00f6\u011f\u00fctme veya \u00e7\u00f6z\u00fcnme-\u00e7\u00f6keltme y\u00f6ntemleriyle \u00fcretilir. Jet \u00f6\u011f\u00fctme, ince ve ultra ince PEEK (D50 15 \u00b5m'nin alt\u0131nda) i\u00e7in tercih edilen teknolojidir. Uygun teknoloji, uygulaman\u0131n partik\u00fcl boyutu gereksinimine ba\u011fl\u0131d\u0131r.<\/em><\/p>\n\n\n\n

    PEEK i\u00e7in Jet Frezeleme, Kriyojenik Frezeleme ve Mekanik Frezeleme Kar\u015f\u0131la\u015ft\u0131rmas\u0131<\/h2>\n\n\n\n

    PEEK tozunun \u00fcretimi i\u00e7in ticari olarak \u00fc\u00e7 teknoloji kullan\u0131lmaktad\u0131r. Her birinin, en uygun se\u00e7im oldu\u011fu bir par\u00e7ac\u0131k boyutu aral\u0131\u011f\u0131 vard\u0131r. Avantaj ve dezavantajlar\u0131n\u0131 anlamak, \u00f6zel uygulaman\u0131z i\u00e7in do\u011fru s\u00fcreci se\u00e7menize yard\u0131mc\u0131 olur.<\/p>\n\n\n\n

    Fakt\u00f6r<\/strong><\/td>Jet Frezeleme<\/strong><\/td>Kriyojenik \u00d6\u011f\u00fctme<\/strong><\/td>Mekanik Frezeleme (Ortam S\u0131cakl\u0131\u011f\u0131nda)<\/strong><\/td><\/tr>
    Elde edilebilecek en iyi D50<\/td>0,5-5 \u00b5m (pratik alt s\u0131n\u0131r)<\/td>20-60 \u00b5m<\/td>30-100 \u00b5m (k\u00fcmelenme sorunlar\u0131yla birlikte)<\/td><\/tr>
    PEEK i\u00e7in en iyi D50 serisi<\/td>1-15 \u00b5m<\/td>40-100 \u00b5m (SLS toz aral\u0131\u011f\u0131)<\/td>PEEK i\u00e7in \u00f6nerilmez.<\/td><\/tr>
    Termal bozulma riski<\/td>Yok (gaz genle\u015fmesiyle so\u011futma)<\/td>Yok (LN2 k\u0131r\u0131lganl\u0131\u011f\u0131)<\/td>Y\u00fcksek (\u00e7arpma an\u0131nda lokalize \u0131s\u0131nma)<\/td><\/tr>
    Metal kirlenmesi riski<\/td>S\u0131f\u0131ra yak\u0131n (seramik temas y\u00fczeyleri)<\/td>D\u00fc\u015f\u00fck-orta (\u00e7elik fabrikas\u0131 y\u00fczeyleri d\u00fc\u015f\u00fck s\u0131cakl\u0131kta)<\/td>Y\u00fcksek (y\u00fcksek \u0131s\u0131da \u00e7elik a\u015f\u0131nmas\u0131)<\/td><\/tr>
    PSD kontrol\u00fc<\/td>M\u00fckemmel (ayarlanabilir s\u0131n\u0131fland\u0131r\u0131c\u0131)<\/td>Orta d\u00fczey (ekran tabanl\u0131 ayr\u0131m)<\/td>K\u00f6t\u00fc (k\u00fcmelenme da\u011f\u0131l\u0131m\u0131 bozar)<\/td><\/tr>
    Par\u00e7ac\u0131k morfolojisi<\/td>A\u00e7\u0131saldan yar\u0131 k\u00fcresele<\/td>D\u00fczensiz, genellikle lameller k\u0131r\u0131k<\/td>D\u00fczensiz, genellikle uzun<\/td><\/tr>
    Ton ba\u015f\u0131na i\u015fletme maliyeti<\/td>Y\u00fcksek (s\u0131k\u0131\u015ft\u0131r\u0131lm\u0131\u015f gaz enerjisi)<\/td>Orta-y\u00fcksek (s\u0131v\u0131 azot t\u00fcketimi)<\/td>D\u00fc\u015f\u00fck (ancak \u00fcr\u00fcn kalitesi uygulanabilirli\u011fini s\u0131n\u0131rl\u0131yor)<\/td><\/tr>
    En iyisi<\/td>T\u0131bbi, kompozitler, kaplamalar (D50 <15 \u00b5m)<\/td>SLS 3D bask\u0131 tozu (D50 40-90 \u00b5m)<\/td>Sadece end\u00fcstriyel s\u0131n\u0131f, kritik olmayan uygulamalar i\u00e7in.<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

    Ak\u0131\u015fkan Yatakl\u0131 Jet Frezesinde PEEK \u0130\u00e7in \u00c7al\u0131\u015fma Parametreleri<\/h2>\n\n\n\n

    PEEK, yo\u011funlu\u011funun \u00e7ok daha d\u00fc\u015f\u00fck olmas\u0131 (al\u00fcmina i\u00e7in 2,7 g\/cm\u00b3'e kar\u015f\u0131l\u0131k 1,26-1,32 g\/cm\u00b3) ve yeterli \u00e7arp\u0131\u015fma enerjisi uygulanana kadar k\u0131r\u0131lmaya kar\u015f\u0131 diren\u00e7 g\u00f6stermesi nedeniyle jet de\u011firmeninde mineral malzemelerden farkl\u0131 davran\u0131r. A\u015fa\u011f\u0131daki parametre aral\u0131klar\u0131, standart bir ak\u0131\u015fkan yatakl\u0131 jet de\u011firmeninde PEEK i\u00e7in ba\u015flang\u0131\u00e7 noktalar\u0131d\u0131r; l\u00fctfen kendi \u00f6zel kaliteniz i\u00e7in bir test \u00f6\u011f\u00fctmesiyle do\u011frulay\u0131n.<\/p>\n\n\n\n

    Parametre<\/strong><\/td>PEEK i\u00e7in Tipik Aral\u0131k<\/strong><\/td>\u00dcr\u00fcne Etkisi<\/strong><\/td>Notlar<\/strong><\/td><\/tr>
    \u00d6\u011f\u00fctme gaz\u0131 bas\u0131nc\u0131<\/td>5-8 bar<\/td>Daha y\u00fcksek bas\u0131n\u00e7, par\u00e7ac\u0131k \u00e7arp\u0131\u015fma h\u0131z\u0131n\u0131 art\u0131r\u0131r; bu da dayan\u0131kl\u0131 polimerler i\u00e7in kritik \u00f6neme sahiptir. 5 bar'\u0131n alt\u0131nda PEEK verimli bir \u015fekilde k\u0131r\u0131lmaz.<\/td>6 bar'dan ba\u015flay\u0131n ve PSD sonu\u00e7lar\u0131na g\u00f6re ayarlama yap\u0131n.<\/td><\/tr>
    S\u0131n\u0131fland\u0131r\u0131c\u0131 tekerlek h\u0131z\u0131<\/td>2.000-8.000 devir\/dakika (de\u011firmen boyutuna ba\u011fl\u0131 olarak)<\/td>Birincil D50 kontrol\u00fc. Daha y\u00fcksek h\u0131z = daha ince \u00fcr\u00fcn.<\/td>Devir say\u0131s\u0131n\u0131 500 rpm'lik ad\u0131mlarla art\u0131r\u0131n; her de\u011fi\u015fiklikten sonra PSD'yi \u00f6rnekleyin ve \u00f6l\u00e7\u00fcn.<\/td><\/tr>
    \u0130lerleme h\u0131z\u0131<\/td>D\u00fc\u015f\u00fck ila orta d\u00fczeyde (e\u015fde\u011fer de\u011firmen b\u00fcy\u00fckl\u00fc\u011f\u00fc i\u00e7in mineral besleme oranlar\u0131n\u0131n olduk\u00e7a alt\u0131nda)<\/td>Daha y\u00fcksek besleme h\u0131z\u0131, par\u00e7ac\u0131k konsantrasyonunu art\u0131r\u0131r ve kesme noktas\u0131n\u0131 hafif\u00e7e kal\u0131nla\u015ft\u0131r\u0131r. PEEK besleme h\u0131z\u0131, e\u015fde\u011fer mineral besleme h\u0131z\u0131n\u0131n 40-60%'si olmal\u0131d\u0131r.<\/td>Kontroll\u00fc titre\u015fimli veya vidal\u0131 besleyici kullan\u0131n; tutars\u0131z besleme h\u0131z\u0131 par\u00e7ac\u0131k boyutu da\u011f\u0131l\u0131m\u0131n\u0131 geni\u015fletir.<\/td><\/tr>
    Gaz t\u00fcr\u00fc<\/td>Kuru bas\u0131n\u00e7l\u0131 hava (standart); azot (t\u0131bbi\/havac\u0131l\u0131k s\u0131n\u0131f\u0131)<\/td>Azot, \u00f6\u011f\u00fctme ko\u015fullar\u0131nda polimer y\u00fczeyinin oksidasyonunu \u00f6nler. T\u0131bbi s\u0131n\u0131f uygulamalar i\u00e7in gereklidir.<\/td>Gaz \u00e7i\u011flenme noktas\u0131n\u0131 izleyin \u2014 nem, ince PEEK tozunun elektrostatik olarak k\u00fcmelenmesine neden olur.<\/td><\/tr>
    Besleme boyutu<\/td>Genellikle <3 mm peletler veya \u00f6nceden gran\u00fcle edilmi\u015f PEEK<\/td>Daha iri taneli besleme, \u00f6\u011f\u00fctme y\u00fck\u00fcn\u00fc art\u0131r\u0131r; \u00e7ok ince taneli besleme ise besleme sisteminde t\u0131kanmaya neden olabilir.<\/td>Daha b\u00fcy\u00fck tanelerden ba\u015fl\u0131yorsan\u0131z, 1-3 mm'ye kadar \u00f6nceden \u00f6\u011f\u00fct\u00fcn.<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

    \u00dcretim Uygulamalar\u0131: Jet Frezeleme Y\u00f6ntemiyle \u00dcretilen PEEK Neler Sa\u011flar?<\/h2>\n\n\n\n

    BA\u015eVURU 1<\/h3>\n\n\n\n

    Omurga \u0130mplant\u0131 \u00dcretimi i\u00e7in PEEK Mikrotoz \u2014 D50 3,5 \u03bcm, S\u0131f\u0131r Metal Kontaminasyonu<\/strong>
    Gereksinim<\/strong>PEEK omurga intervertebral f\u00fczyon kafesleri \u00fcreten bir t\u0131bbi cihaz \u00fcreticisi, kemik b\u00fcy\u00fcmesini destekleyen g\u00f6zenekli iskelet yap\u0131lar\u0131 olu\u015fturmak i\u00e7in kullan\u0131lan polimer sinterleme i\u015flemi i\u00e7in ince bir PEEK tozuna ihtiya\u00e7 duyuyordu. Spesifikasyon, D50 3-5 \u00b5m, D97 12 \u00b5m'nin alt\u0131nda ve Fe 0,5 ppm'nin alt\u0131nda olmal\u0131yd\u0131; bu, implant s\u0131n\u0131f\u0131 titanyum tozu i\u00e7in gerekli olan ayn\u0131 kirlilik seviyesidir. \u00d6nceki tedarik\u00e7ileri bir pimli de\u011firmen kullan\u0131yordu ve Fe spesifikasyonunu s\u00fcrekli olarak 2-4 ppm ile kar\u015f\u0131layam\u0131yordu.
    \u00c7\u00f6z\u00fcm<\/strong>EPIC Powder Machinery, kapal\u0131 bir azot d\u00f6ng\u00fcs\u00fcnde \u00e7al\u0131\u015fan, tamamen seramik temas y\u00fczeylerine (ZrO2 s\u0131n\u0131fland\u0131r\u0131c\u0131 \u00e7ark ve g\u00f6vde astarlar\u0131, Al2O3 nozul u\u00e7lar\u0131) sahip ak\u0131\u015fkan yatakl\u0131 bir jet de\u011firmeni yap\u0131land\u0131rd\u0131. Azot safl\u0131\u011f\u0131 ,91 TP3T'de tutuldu. \u00d6\u011f\u00fctme bas\u0131nc\u0131 6,5 bar'a, s\u0131n\u0131fland\u0131r\u0131c\u0131 h\u0131z\u0131 ise D50 3,5 \u00b5m hedefi i\u00e7in 5800 rpm'ye ayarland\u0131.<\/p>\n\n\n\n

    Sonu\u00e7lar<\/strong>
    D50: <\/strong>3,4 \u00b5m, D97 11,2 \u00b5m \u2014 her \u00fcretim partisinde belirtilen \u00f6zelliklere uygun.
    Demir kirlili\u011fi: <\/strong>ICP-MS ile 0,15 ppm'nin alt\u0131nda \u2014 pimli \u00f6\u011f\u00fctme i\u015fleminden 10-20 kat daha d\u00fc\u015f\u00fck
    Polimer b\u00fct\u00fcnl\u00fc\u011f\u00fc: <\/strong>DSC (diferansiyel taramal\u0131 kalorimetre) y\u00f6ntemiyle yap\u0131lan incelemeler, referans \u00f6\u011f\u00fct\u00fclmemi\u015f PEEK'e k\u0131yasla erime noktas\u0131nda veya kristalli\u011finde herhangi bir de\u011fi\u015fiklik olmad\u0131\u011f\u0131n\u0131, yani termal bozulma olmad\u0131\u011f\u0131n\u0131 do\u011frulad\u0131.
    Yasal d\u00fczenlemeler: <\/strong>Ham PEEK pelet partisinden nihai toz partisine kadar tam malzeme izlenebilirli\u011fi; her sevkiyatla birlikte PSD, ICP-MS ve DSC i\u00e7eren COA (Analiz Sertifikas\u0131) sa\u011flan\u0131r.<\/p>\n\n\n\n

    BA\u015eVURU 2<\/h3>\n\n\n\n

    Havac\u0131l\u0131k ve Uzay Karbon Fiber Prepreg i\u00e7in PEEK Kompozit Tozu \u2014 D50 8 \u03bcm<\/strong>
    Gereksinim<\/strong>
    Bir havac\u0131l\u0131k kompozit \u00fcreticisi, u\u00e7ak yap\u0131sal bile\u015fenleri i\u00e7in PEEK\/karbon fiber prepreg geli\u015ftiriyordu. \u0130nce PEEK tozu, konsolidasyondan \u00f6nce karbon fiber demetlerinin \u00fczerine da\u011f\u0131t\u0131l\u0131r; toz, konsolidasyon s\u0131ras\u0131nda erir ve matrisi olu\u015fturur. Daha ince PEEK tozu, fiber y\u00fczeyinde da\u011f\u0131l\u0131m homojenli\u011fini art\u0131r\u0131r ve konsolide laminattaki bo\u015fluk i\u00e7eri\u011fini azalt\u0131r. Hedefleri, D97'nin 25 \u00b5m'nin alt\u0131nda oldu\u011fu D50 de\u011ferinin 6-10 \u00b5m olmas\u0131yd\u0131. Daha \u00f6nceki mekanik ta\u015flama denemeleri, g\u00f6r\u00fcn\u00fcr topaklanmalarla birlikte D97 de\u011ferini 45 \u00b5m'nin \u00fczerinde \u00fcretmi\u015fti.
    \u00c7\u00f6z\u00fcm<\/strong> S\u0131n\u0131fland\u0131r\u0131c\u0131 3400 rpm'ye ve \u00f6\u011f\u00fctme bas\u0131nc\u0131 7 bar'a ayarlanm\u0131\u015f, kuru bas\u0131n\u00e7l\u0131 havada (havac\u0131l\u0131k s\u0131n\u0131f\u0131 PEEK, azot atmosferine ihtiya\u00e7 duymaz) ak\u0131\u015fkan yatakl\u0131 jet de\u011firmeni.<\/p>\n\n\n\n

    Sonu\u00e7lar<\/strong>
    D50: <\/strong>8,1 \u00b5m, D97 23 \u00b5m \u2014 teknik \u00f6zelliklere uygun, g\u00fcvenlik pay\u0131 ile.
    Aglomeratlar: <\/strong>30 \u00b5m'nin \u00fczerinde mikroskopla hi\u00e7bir \u015fey tespit edilmedi; mekanik ta\u015flamay\u0131 uygunsuz hale getiren sorun ortadan kalkt\u0131.
    Bile\u015fik bo\u015fluk i\u00e7eri\u011fi: <\/strong>Mekanik olarak \u00f6\u011f\u00fct\u00fclm\u00fc\u015f PEEK tozu ile 1,8%'den konsolidasyon denemelerinde 0,6%'ye d\u00fc\u015f\u00fcr\u00fcld\u00fc; bu da havac\u0131l\u0131k sekt\u00f6r\u00fcn\u00fcn 1%'nin alt\u0131nda olma gereksinimini kar\u015f\u0131l\u0131yor.
    Verim: <\/strong>Orta \u00f6l\u00e7ekli bir de\u011firmende saatte 12 kg kapasite \u2014 pilot \u00fcretim hacmi i\u00e7in yeterli.<\/p>\n\n\n\n

    Jet frezeleme i\u00e7in uygun di\u011fer y\u00fcksek performansl\u0131 polimerler<\/h2>\n\n\n\n

    PEEK, jet frezeleme i\u00e7in en \u00e7ok konu\u015fulan y\u00fcksek performansl\u0131 polimerdir, ancak ayn\u0131 prensipler daha geni\u015f m\u00fchendislik polimerleri ailesi i\u00e7in de ge\u00e7erlidir. Hepsinin ortak temel \u00f6zelli\u011fi: dayan\u0131kl\u0131, \u0131s\u0131ya duyarl\u0131 olmalar\u0131 ve metal kirlenmesinin ve termal bozulman\u0131n kabul edilemez oldu\u011fu uygulamalarda kullan\u0131lmalar\u0131d\u0131r.<\/p>\n\n\n\n

    Polimer<\/strong><\/td>Yumu\u015fama Kayg\u0131s\u0131<\/strong><\/td>Tipik Jet De\u011firmeni D50 Hedefi<\/strong><\/td>Ba\u015fl\u0131ca Uygulamalar<\/strong><\/td><\/tr>
    PTFE<\/td>Geleneksel y\u00f6ntemlerle erimez ancak 19 santigrat derecenin \u00fczerindeki gerilim alt\u0131nda s\u00fcr\u00fcnme g\u00f6sterir; ortam s\u0131cakl\u0131\u011f\u0131nda \u00f6\u011f\u00fctme s\u00fcr\u00fcnmeye ve k\u00fcmelenmeye neden olur.<\/td>1-5 \u00b5m<\/td>Ya\u011flay\u0131c\u0131 katk\u0131 maddeleri, yap\u0131\u015fmaz kaplamalar, t\u0131bbi contalar<\/td><\/tr>
    Poliimid (PI)<\/td>Y\u00fcksek Tg (250-400 santigrat derece) \u2014 PEEK'ten daha az hassas ancak ince taneli \u00fcr\u00fcnler i\u00e7in so\u011fuk \u00f6\u011f\u00fctmeden yine de fayda sa\u011fl\u0131yor.<\/td>2-8 \u00b5m<\/td>Havac\u0131l\u0131k filmi, esnek devreler, y\u00fcksek s\u0131cakl\u0131k bur\u00e7lar\u0131<\/td><\/tr>
    PPS (polifenilen s\u00fclf\u00fcr)<\/td>Tg 85-90 derece C \u2014 ortam s\u0131cakl\u0131\u011f\u0131n\u0131n \u00fczerinde \u00f6\u011f\u00fctme \u00f6nemli \u00f6l\u00e7\u00fcde topaklanmaya neden olur.<\/td>3-10 \u00b5m<\/td>Otomotiv, kimyasal diren\u00e7li bile\u015fenler, elektronik<\/td><\/tr>
    PEK<\/td>PEEK'e benzer \u015fekilde, Tg ~165 \u00b0C'dir ve daha y\u00fcksek kristalle\u015fme h\u0131z\u0131na ihtiya\u00e7 duyulan yerlerde kullan\u0131l\u0131r.<\/td>2-8 \u00b5m<\/td>Havac\u0131l\u0131k kompozitleri, 3D bask\u0131, implantlar<\/td><\/tr>
    UHMWPE<\/td>\u00c7ok d\u00fc\u015f\u00fck yumu\u015fama noktas\u0131 \u2014 s\u00fcrt\u00fcnme \u0131s\u0131s\u0131 bile y\u00fczey kayna\u011f\u0131na neden olur; so\u011fuk gaz veya kriyojenik destek gerektirir.<\/td>5-15 \u00b5m<\/td>Ortopedik implantlar, a\u015f\u0131nma par\u00e7alar\u0131, balistik koruma<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n
    PEEK mi yoksa ba\u015fka bir y\u00fcksek performansl\u0131 polimer mi i\u015fleniyor?<\/strong>
    EPIC Powder Machinery'nin ak\u0131\u015fkan yatakl\u0131 jet \u00f6\u011f\u00fctme makineleri PEEK, PTFE, PI, PPS ve di\u011fer m\u00fchendislik polimerleri i\u00e7in yap\u0131land\u0131r\u0131lm\u0131\u015ft\u0131r. Malzemeniz \u00fczerinde \u00fccretsiz test \u00f6\u011f\u00fctme hizmeti sunuyoruz \u2014 hedef D50 ve D97 de\u011ferlerini belirtin, biz de size par\u00e7ac\u0131k boyutu da\u011f\u0131l\u0131m\u0131 (PSD) verilerini, kirlilik analizini ve proses parametre \u00f6nerisini sunal\u0131m. T\u0131bbi ve havac\u0131l\u0131k s\u0131n\u0131flar\u0131 i\u00e7in, seramik temas y\u00fczeyleriyle azot alt\u0131nda \u00e7al\u0131\u015fabilir ve tam malzeme izlenebilirlik dok\u00fcmantasyonu sa\u011flayabiliriz. Malzemenizi, hedef PSD'nizi ve uygulaman\u0131z\u0131 bize g\u00f6nderin, biz de do\u011fru konfig\u00fcrasyonu tasarlayal\u0131m.\u00a0\u00a0<\/strong>
    \u00dccretsiz deneme \u00f6\u011f\u00fctme talebinde bulunmak i\u00e7in: www.jet-mills.com\/contact\u00a0\u00a0<\/strong>
    Polimer Jet De\u011firmen \u00dcr\u00fcn Yelpazemizi Ke\u015ffedin: www.jet-mills.com<\/strong><\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

    S\u0131k\u00e7a Sorulan Sorular<\/h2>\n\n\n\n

    Jet frezeleme y\u00f6ntemiyle PEEK'ten hangi D50 de\u011ferleri elde edilebilir ve pratik bir alt s\u0131n\u0131r var m\u0131d\u0131r?<\/h3>\n\n\n\n

    Standart ko\u015fullar alt\u0131nda PEEK'in jet \u00f6\u011f\u00fctme i\u00e7in pratik alt s\u0131n\u0131r\u0131 yakla\u015f\u0131k olarak D50 1-2 \u00b5m'dir. Bu boyutun alt\u0131nda, PEEK tozu s\u0131n\u0131fland\u0131r\u0131c\u0131 b\u00f6lgesinde elektrostatik k\u00fcmelenmeye giderek daha yatk\u0131n hale gelir; ince polimer par\u00e7ac\u0131klar\u0131 y\u00fczey y\u00fck\u00fc ta\u015f\u0131r ve y\u00fcksek \u00f6zg\u00fcl y\u00fczey alan\u0131nda, s\u0131n\u0131fland\u0131r\u0131c\u0131 hava ak\u0131\u015f\u0131n\u0131n onlar\u0131 ay\u0131rabilece\u011finden daha g\u00fc\u00e7l\u00fc bir \u015fekilde birbirlerini \u00e7ekerler. Baz\u0131 \u00fcreticiler, 1 \u00b5m'nin alt\u0131na inmek i\u00e7in gaz ak\u0131\u015f\u0131nda antistatik katk\u0131 maddeleri veya nem kontrol\u00fc kullan\u0131rlar, ancak bu i\u015flem karma\u015f\u0131kl\u0131\u011f\u0131n\u0131 art\u0131r\u0131r. \u00c7o\u011fu pratik uygulama i\u00e7in, elde edilebilir aral\u0131k D50 1,5-15 \u00b5m'dir ve D97 tipik olarak D50'nin 3-4 kat\u0131d\u0131r. Uygulaman\u0131z lazer sinterleme i\u00e7in daha kaba PEEK tozu (D50 40-90 \u00b5m) gerektiriyorsa, jet \u00f6\u011f\u00fctme bu aral\u0131k i\u00e7in do\u011fru teknoloji de\u011fildir; kriyojenik \u00f6\u011f\u00fctme veya \u00e7\u00f6z\u00fcnme-\u00e7\u00f6keltme daha uygun ve daha maliyet etkin y\u00f6ntemlerdir.<\/p>\n\n\n\n

    Jet \u00f6\u011f\u00fctme i\u015flemi PEEK'in molek\u00fcler a\u011f\u0131rl\u0131\u011f\u0131n\u0131 veya kristalli\u011fini de\u011fi\u015ftirir mi?<\/h3>\n\n\n\n

    Do\u011fru kontrol edilen \u00e7al\u0131\u015fma parametrelerinde hay\u0131r \u2014 ve bu, iki standart karakterizasyon testiyle do\u011frulanm\u0131\u015ft\u0131r. DSC (diferansiyel tarama kalorimetrisi), tozun erime noktas\u0131n\u0131 ve kristalli\u011fini \u00f6l\u00e7er: \u00f6\u011f\u00fctme s\u0131ras\u0131nda termal bozulma meydana gelmi\u015fse, erime tepe noktas\u0131 kayar veya geni\u015fler ve kristalli\u011fi de\u011fi\u015fir. GPC (jel ge\u00e7irgenlik kromatografisi), molek\u00fcler a\u011f\u0131rl\u0131k da\u011f\u0131l\u0131m\u0131n\u0131 \u00f6l\u00e7er: termal veya mekanik bozulmadan kaynaklanan zincir k\u0131r\u0131lmas\u0131, daha d\u00fc\u015f\u00fck molek\u00fcler a\u011f\u0131rl\u0131\u011fa do\u011fru bir kayma olarak ortaya \u00e7\u0131kar. Do\u011fru \u00f6\u011f\u00fctme bas\u0131nc\u0131 ve s\u0131cakl\u0131\u011f\u0131nda \u00fcretilen jet \u00f6\u011f\u00fct\u00fclm\u00fc\u015f PEEK, \u00f6\u011f\u00fct\u00fclmemi\u015f re\u00e7ine referans\u0131na e\u015fde\u011fer DSC ve GPC sonu\u00e7lar\u0131 g\u00f6sterir. \u00d6\u011f\u00fctme bas\u0131nc\u0131 \u00e7ok y\u00fcksek ayarlan\u0131rsa (a\u015f\u0131r\u0131 darbe enerjisi) veya azot devresine nem girerse (PEEK'teki ester ba\u011flar\u0131n\u0131n hidrolitik bozulmas\u0131), molek\u00fcler a\u011f\u0131rl\u0131k de\u011fi\u015fimi riski ger\u00e7ektir. \u0130lk \u00fcretim partisinde DSC ile do\u011frulama, t\u0131bbi s\u0131n\u0131f uygulamalar i\u00e7in standart bir uygulamad\u0131r.<\/p>\n\n\n\n

    PEEK malzemesini jet frezeleme i\u015fleminde bas\u0131n\u00e7l\u0131 hava yerine ne zaman nitrojen kullanmal\u0131y\u0131m?<\/h3>\n\n\n\n

    Azot iki senaryoda gereklidir. Birincisi, t\u0131bbi ve implant uygulamalar\u0131: \u00f6\u011f\u00fctme s\u0131ras\u0131nda PEEK y\u00fczeyinin eser miktarda oksidasyonu bile biyouyumlulu\u011fu etkileyebilir. Azot, \u00f6\u011f\u00fctme ortam\u0131ndaki oksijeni tamamen ortadan kald\u0131rarak polimer y\u00fczey kimyas\u0131n\u0131n oksidatif modifikasyonunu \u00f6nler. \u0130kincisi, PEEK tozunun oksijene duyarl\u0131 bir sonraki i\u015flemde kullan\u0131laca\u011f\u0131 herhangi bir uygulama, \u00f6rne\u011fin belirli kompozit konsolidasyon yollar\u0131 veya y\u00fczey fonksiyonelle\u015ftirme ad\u0131mlar\u0131. Bas\u0131n\u00e7l\u0131 hava, havac\u0131l\u0131k yap\u0131sal kompozitleri, tribolojik katk\u0131 maddeleri ve y\u00fczey oksidasyonunun k\u00fc\u00e7\u00fck bir derecesinin fonksiyonel bir sonucu olmad\u0131\u011f\u0131 genel end\u00fcstriyel uygulamalar i\u00e7in kabul edilebilir. Hava ve azot aras\u0131ndaki i\u015fletme maliyeti fark\u0131 s\u00fcrekli \u00fcretim i\u00e7in \u00f6nemlidir; azot ya yerinde \u00fcretim ya da toplu tedarik gerektirir ve kapal\u0131 devre azot sistemi sermaye maliyetini art\u0131r\u0131r. Uygulama spesifikasyonunuz gerektirdi\u011finde azot kullan\u0131n, varsay\u0131lan olarak de\u011fil.<\/p>\n\n\n\n

    Jet \u00f6\u011f\u00fctme y\u00f6ntemiyle \u00fcretilen PEEK'in par\u00e7ac\u0131k morfolojisi, kriyojenik \u00f6\u011f\u00fctme y\u00f6ntemiyle \u00fcretilen PEEK ile nas\u0131l kar\u015f\u0131la\u015ft\u0131r\u0131l\u0131r?<\/h3>\n\n\n\n

    Kriyojenik \u00f6\u011f\u00fctme, \u00f6\u011f\u00fctme a\u015famas\u0131ndan \u00f6nce s\u0131v\u0131 azotla cam ge\u00e7i\u015f s\u0131cakl\u0131\u011f\u0131n\u0131n alt\u0131na so\u011futularak PEEK'i k\u0131r\u0131lgan hale getirir. Kriyojenik s\u0131cakl\u0131klarda, PEEK'in amorf b\u00f6lgeleri viskoelastik \u00f6zelliklerini kaybeder ve k\u0131r\u0131lgan hale gelir; malzeme seramik gibi k\u0131r\u0131l\u0131r. PEEK'in kriyojenik \u00f6\u011f\u00fct\u00fclmesi, genellikle d\u00fczensiz, lameller par\u00e7ac\u0131klar \u00fcretir \u00e7\u00fcnk\u00fc PEEK k\u0131r\u0131lgan oldu\u011funda yar\u0131 kristal lamellerinin d\u00fczlemi boyunca ayr\u0131lma e\u011filimindedir. Jet \u00f6\u011f\u00fctme, k\u0131r\u0131lma yar\u0131lma yerine y\u00fcksek h\u0131zl\u0131 darbe ile y\u00f6nlendirildi\u011fi i\u00e7in daha e\u015f eksenli, a\u00e7\u0131l\u0131 par\u00e7ac\u0131klar \u00fcretir. Her iki i\u015flem de \u00e7\u00f6z\u00fcnme-\u00e7\u00f6keltme y\u00f6nteminin elde edebilece\u011fi k\u00fcresel par\u00e7ac\u0131klar\u0131 \u00fcretmez. Par\u00e7ac\u0131k morfolojisi, toz ak\u0131\u015fkanl\u0131\u011f\u0131n\u0131n kritik oldu\u011fu uygulamalar i\u00e7in \u00f6nemlidir; \u00f6rne\u011fin, SLS 3D bask\u0131, toz yata\u011f\u0131nda daha d\u00fczg\u00fcn akt\u0131klar\u0131 ve paketlendikleri i\u00e7in daha yuvarlak par\u00e7ac\u0131klar\u0131 tercih eder. Kompozit emdirme ve t\u0131bbi uygulamalar i\u00e7in, jet \u00f6\u011f\u00fctmeden elde edilen a\u00e7\u0131l\u0131 par\u00e7ac\u0131klar kabul edilebilir ve baz\u0131 durumlarda tercih edilir \u00e7\u00fcnk\u00fc daha y\u00fcksek y\u00fczey p\u00fcr\u00fczl\u00fcl\u00fc\u011f\u00fc yap\u0131\u015fmay\u0131 iyile\u015ftirir.<\/p>\n\n\n\n

    EPIC Powder Machinery'nin jet de\u011firmenleri PEEK d\u0131\u015f\u0131nda ba\u015fka y\u00fcksek performansl\u0131 polimerleri de i\u015fleyebilir mi?<\/h3>\n\n\n\n

    Evet. EPIC Powder'\u0131n ak\u0131\u015fkan yatakl\u0131 jet de\u011firmenleri PTFE, poliimid (PI), PPS, PEKK, UHMWPE ve di\u011fer bir\u00e7ok m\u00fchendislik polimeri i\u00e7in kullan\u0131lm\u0131\u015ft\u0131r. Farkl\u0131 polimerler i\u00e7in konfig\u00fcrasyon ayarlamalar\u0131 esas olarak \u00f6\u011f\u00fctme bas\u0131nc\u0131nda (PTFE, \u00e7ok farkl\u0131 k\u0131r\u0131lma davran\u0131\u015f\u0131 nedeniyle PEEK'ten daha d\u00fc\u015f\u00fck bas\u0131nca ihtiya\u00e7 duyar), azot atmosferinde (t\u0131bbi PEEK'te oldu\u011fu gibi oksidasyonu \u00f6nlemek i\u00e7in PTFE ve UHMWPE i\u00e7in gereklidir) ve s\u0131n\u0131fland\u0131r\u0131c\u0131 h\u0131z\u0131nda (hedef D50 ve polimer yo\u011funlu\u011funa g\u00f6re de\u011fi\u015fir) yap\u0131l\u0131r. Son derece d\u00fc\u015f\u00fck yumu\u015fama noktas\u0131na sahip UHMWPE, bazen jet de\u011firmeninden \u00f6nce besleme malzemesinin hafif\u00e7e \u00f6n so\u011futulmas\u0131ndan fayda g\u00f6r\u00fcr. Ekipman spesifikasyonundan \u00f6nce her polimer s\u0131n\u0131f\u0131 i\u00e7in test \u00f6\u011f\u00fctmeleri sunuyoruz \u2014 polimer \u00f6\u011f\u00fctme davran\u0131\u015f\u0131, ayn\u0131 baz malzemenin farkl\u0131 s\u0131n\u0131flar\u0131 aras\u0131nda mineral \u00f6\u011f\u00fctmeye g\u00f6re daha de\u011fi\u015fkendir, bu nedenle belirli re\u00e7ineniz \u00fczerinde bir deneme, \u00fcretim parametre setini belirlemenin tek g\u00fcvenilir yoludur.<\/p>\n\n\n\n

    \n