Njira Yopangira Zinthu za PTFE

Ngakhale PTFE ili ndi zabwino zambiri, njira yake yopangira ndi yosiyana ndi mapulasitiki ena.Zopangira zopangidwa ndi Teflon zimagwiritsa ntchito utomoni woyimitsidwa wa Teflon mu nkhungu yachitsulo, kukanikizidwa pa makina osindikizira kuti apange chopanda kanthu, ndiyeno sintered.Kuumba ndondomeko motere.

Ngakhale PTFE ili ndi zabwino zambiri, njira yake yopangira ndi yosiyana ndi mapulasitiki ena.Zopangira zopangidwa ndi Teflon zimagwiritsa ntchito utomoni woyimitsidwa wa Teflon mu nkhungu yachitsulo, kukanikizidwa pa makina osindikizira kuti apange chopanda kanthu, ndiyeno sintered.Njira yakuumba ili motere:

Kuyanika → ufa → kulemera → kukanikiza → sintering → kupanga

1. Kuyanika: Poyendetsa ndi kusungirako, PTFE utomoni umakhala wonyowa mosavuta chifukwa cha kusungidwa kosayenera (thupi limakhala lovutirapo ndi chinyezi pamene kutentha kwa mpweya kuli kwakukulu m'chilimwe), ndipo ufa wa resin uli ndi chinyezi, chomwe chingachepetse chinyezi panthawi yotentha kwambiri.Kutuluka kwa nthunzi kumapangitsa kuti zinthu zinyalala zizilembedwa.Choncho, PTFE utomoni ufa ayenera zouma mu mtundu youma pamaso ufa.

2. Zinthu zaufa: yumitsani ufa wa utomoni kutentha kwa firiji, sakanizani zinyalala za ufa wa agglomerated ndi njira youma, ndipo mugwiritseni ntchito mukakanikiza.

3. Kuyeza: Kuyeza sikelo nakonso ndi sitepe yofunika kwambiri.Ngati kutalika kwa mankhwala kukhale kofanana, m'pofunika kuonetsetsa kuti kulemera kwa chinthu chilichonse ndi chimodzimodzi pansi pa nkhungu yomweyi komanso kupanikizika komweko.

4. Kupondereza: Ikani zinthu zoyezera muzitsulo za nkhungu, kuziyika pa makina osindikizira, kanikizani pang'onopang'ono molingana ndi kukakamizidwa kofunikira, ndipo malinga ndi kukula ndi makulidwe a mankhwala, tulutsani bwino panthawi ya pressurization.Ndipo mutatha kukakamiza, kukula kwa chinthucho kumasungidwa bwino, nthawi zambiri mkati mwa mphindi 0.5-15.

5. Sintering: Ikani PTFE mbamuidwa akusoweka mu ng'anjo sintering monga pakufunika, kutseka chitseko ng'anjo, ndipo malinga ndi ndondomeko sintering ndi kutentha zofunika, sintered akusowekapo amakhalaMtengo wa PTFE.

6. Kujambula: Panthawi yojambula, njira inayake imagwiritsidwa ntchito kubwezeretsa mawonekedwe oyambirira a mankhwala ndi deformation yaikulu pambuyo pa sintering.