Qaysi material ftor konsentratsiyasida eng yaxshi ishlaydi?

I. Past konsentratsiyali ftorning parchalanish stsenariysi (HF konsentratsiyasi < 50 ppm) Operatsion xarakteristikalar: Faqat oz miqdordagi ftoroplastlar parchalanadi; issiq yuguruvchilarning normal ish harorati 250 darajadan kam yoki unga teng; aniq korroziya belgilari yo'q. Eng yaxshi ishlaydigan material: Monel 400 qotishmasi Asosiy afzalliklari: Nikel-mis asosidagi qotishma qattiq xrom qoplangan H13 po'latiga nisbatan past konsentratsiyali HF ga nisbatan ancha yuqori korroziyaga chidamliligini namoyish etadi. Korroziya darajasi 250 daraja < 0,2 mm/yil; chuqur korroziya xavfi yo'q; uzoq muddatli foydalanish qoplamaning qobig'i yoki ishlamay qolishiga olib kelmaydi. II. O'rta konsentratsiyali ftorning parchalanish stsenariysi (HF konsentratsiyasi 50 ~ 200 ppm) Operatsion xarakteristikalari: Ftoroplastiklar uzoq vaqt davomida barqaror ravishda parchalanadi; yuguruvchi yuzasida engil pitting korroziyasi paydo bo'ladi; issiq yuguruvchilarning normal ish harorati 250 ~ 280 daraja. Eng yaxshi ishlovchi material: Hastelloy C-22 Asosiy afzalliklari: Inconel 625 bilan solishtirganda optimallashtirilgan molibden-xrom nisbati, buning natijasida o'rtacha HF konsentratsiyasida chuqurchalar va yoriqlar korroziyasiga chidamliligi 40% ga yaxshilanadi, bu esa parchalanish mahsuloti oqimi kanallarida to'planishi natijasida yuzaga keladigan mahalliy korroziya teshilishining to'liq oldini oladi. III. Yuqori konsentratsiyali ftorning parchalanish mahsuloti stsenariylari (HF kontsentratsiyasi > 200 ppm) Operatsion xususiyatlari: Ftoroplastiklarning yuqori haroratli, keng ko'lamli parchalanishi, oqim kanallarida sezilarli yashil korroziya, odatdagi issiq yugurish ish harorati 280 ~ 320 daraja. Eng yaxshi ishlaydigan material: Hastelloy C276 Asosiy afzalliklari: Eksklyuziv yuqori molibden + volfram nisbati, korroziya tezligi<0.1 mm/year at 300℃, making it the most stable commercial alloy in terms of overall fluorine corrosion resistance within this concentration range, with no significant corrosion loss. IV. Extremely High Concentration Fluorine Decomposition Product Scenarios (HF Concentration > 500 ppm) Operating Characteristics: Prolonged overheating decomposition of fluoroplastics, rapid corrosion of ordinary alloys, with localized hot runner temperatures exceeding 320℃. Optimal Performance Material: 99.5% High-Purity Alumina Ceramic Core Advantages: Completely chemically inert, does not react with HF, completely eliminates corrosion from fluorine decomposition products, and is compatible with other metal materials that cannot withstand it.