Tegishli muhitda material tanlashni joriy etishdan oldin, keling, kontseptsiyani o'rganamiz - isitish quvurlarining sirtini yuklash.
Mashinasozlik sanoati standartida belgilangan sirt yuki (sruface lord): isitish yuzasining birlik maydoniga quvvat, kvadrat santimetr uchun vatt (Vt/sm²)
Isitish trubkasi quvvatini bilsak, bu quvvatni isitish trubasining isitish qismining sirt maydoniga bo'lish isitish trubkasining sirt yukini beradi.
Har bir material turli xil vositalar ostida bardosh bera oladigan maksimal sirt yuki har xil, shuning uchun sirt yuki material tanlashda muhim elementga aylanadi.
Demak, savol tug'iladi, materialning bardosh bera oladigan maksimal sirt yukini qanday bilish mumkin?
Yuqorida aytib o'tilganidek, haqiqiy va yolg'on onlayn ma'lumotni ajratish qiyin va mexanik sanoat standarti JB/T2379-2016 tez-tez ishlatiladigan muhitda tez-tez ishlatiladigan isitish quvurlari materiallarining eng yuqori ruxsat etilgan sirt yukini ko'rsatadi, bu juda professional. va katta mos yozuvlar qiymatiga ega va o'n yildan ortiq vaqt davomida Heatwave Electric Thermal Technology ishlab chiqarish tajribasiga mos keladi:
Hali ham havo
Yuzaki yuk 5 Vt/sm² dan kam yoki unga teng — SS304; SS321; SS316; SS316L
Yuzaki yuk 7,5 Vt/sm² dan kam yoki unga teng — SS310S; IncoLoy840
Yuzaki yuk 10 Vt/sm² dan kam yoki unga teng — IncoLoy800; IncoLoy800H; Inconel600
Harakatlanuvchi havo (oqim tezligi 6 m/s dan katta yoki unga teng)
Yuzaki yuk 6 Vt/sm² dan kam yoki unga teng — SS304; SS321; SS316; SS316L
Yuzaki yuk 8 Vt/sm² dan kam yoki unga teng — SS310S; IncoLoy840
Yuzaki yuk 11 Vt/sm² dan kam yoki unga teng — IncoLoy800; IncoLoy800H; Inconel600
Suv, kuchsiz kislota, kuchsiz ishqor eritmasi qaynatiladi
Yuzaki yuk 7 Vt/sm² dan kam yoki unga teng - mis (T4)
Yuzaki yuk 11 Vt/sm² dan kam yoki unga teng — SS304; SS321; SS316; SS316L
Yuzaki yuk 13 Vt/sm² dan kam yoki unga teng — SS310S; IncoLoy840
Yuzaki yuk 15 Vt/sm² dan kam yoki unga teng — IncoLoy800; IncoLoy800H; Inconel600
Oziq-ovqat yog'i, moylash moyi, gidravlik moy
Yuzaki yuk 0.7 Vt/sm² dan kam yoki unga teng — SS304; SS321; SS316; SS316L
Yuzaki yuk Oqim ostida 1,5 Vt/sm² dan kam yoki unga teng — SS304; SS321; SS316; SS316L
Yuzaki yuk bilan oqim issiqlik tashuvchisi 2,5 Vt/sm² dan kam yoki unga teng — SS321
Komponentlar alyuminiy, mis, po'lat va boshqalar kabi materiallarga quyiladi, yuviladi, presslanadi
Yuzaki yuk 13 Vt/sm² dan kam yoki unga teng — SS304; SS321; SS316L
Yuqori bosimli, o'rta va yuqori ish haroratidagi suv
Yuzaki yuk 2,5 Vt/sm² dan kam yoki unga teng (yuqori haroratda 2 Vt/sm² SS321 dan kam yoki unga teng; SS310S; IncoLoy840
Yuzaki yuk 3 Vt/sm² dan kam yoki unga teng (yuqori haroratda 2,5 Vt/sm² dan kam yoki teng) — IncoLoy800; IncoLoy800H; Inconel600
Korroziv suyuqlik muhiti (maxsus foydalanish uchun mos yozuvlar materiallari va korroziv suyuqlikning xususiyatlari talab qilinadi)
Yuzaki yuk 2 Vt/sm² dan kam yoki unga teng - zanglamaydigan po'latdan qoplangan Teflon (metrga 600 Vt gacha isitish qismi)
Yuzaki yuk 7 Vt/sm² dan kam yoki unga teng - titanium qotishmalari (TA1, TA2) (isitish qismining quvvati har bir metr uchun 2 kVtgacha)
Shuni ta'kidlash kerakki, materialning harorati ham muhim tanlov asosidir, masalan:
Havoda quruq yonish uchun isitish trubkasi: SS304 materialining maksimal harorat qarshiligi 550 daraja; S321, SS310S, IncoLoy840 materiallari 850 daraja maksimal harorat qarshiligiga ega
Suvda, suv bug'ida yoki past korroziyaga ega nam muhitda: SS321 550 darajagacha haroratga chidamliligiga ega
Muayyan korroziy suv va suv bug'lari muhitida: SS316L 400 daraja maksimal harorat qarshiligiga ega
Tez-tez tanlash kerak bo'lgan foydalanuvchilar ushbu sahifani belgilashlari mumkin, bu esa topish uchun qulayroqdir.
