Zanglamaydigan po'lat quvurlardan foydalanish endi tobora ko'proq foydalanilmoqda. Yaxshi korroziyaga chidamliligi tufayli u muhandislik qurilishida muhim rol o'ynaydi. Ishlab chiqarish jarayonida biz zanglamaydigan po'lat quvurlarga qattiq eritma bilan ishlov berishimiz kerak. Asosiy maqsad mahsulotning qattiqligini oshiradigan ma'lum martensitni olishdir. Quyida zanglamaydigan po'lat quvurlarni qattiq eritma bilan ishlov berishni ko'rib chiqaylik:
(1) Intermediate aging method heats to (760±15) degree after solution treatment, keeps holding for 90min, because Cr23C6 carbide precipitates from austenite, which reduces the content of carbon and alloying elements in the austenitic 904L stainless steel tube , The Ms point is raised to 70 degree and then cooled to room temperature to obtain martensite plus ferrite plus retained austenite structure, and the retained austenite is decomposed after aging at 510 degree .
(2) Yuqori haroratni sozlash va kriyojenik ishlov berishdan so'ng, 950 darajaga qizdiring va qattiq eritmadan keyin 90 daqiqa ushlab turing. Ms nuqtasi ko'tarilganligi sababli, xona haroratiga sovutish orqali oz miqdorda martensit olish mumkin; keyin -70 darajada sovuq ishlov berish va 8 soat ushlab turish orqali olish mumkin. Martensit miqdori.
(3) After the cold deformation method and solution treatment, it is cold deformed at room temperature. The amount of martensite formed in the 904L seamless tube during cold deformation is related to the deformation and the composition of the 904L stainless steel tube.
The above three methods are commonly used methods of solid solution treatment of stainless steel pipes. Hope to help everyone.