S235JRh po'lat quvurini payvandlashda qanday ehtiyot choralarini ko'rish kerak?
S235JRHHHHHHHHHHHHH, Pishirug'i va shlakni qo'shmaslik uchun yog ', zangni va shkalasini tozalashdan oldin tozalang. Uglerod ekvivalenti tufayli (Cev)<0.36%), preheating is generally not required. However, preheating to 80-120°C is recommended for plate thicknesses exceeding 20 mm or when the ambient temperature is below 5°C. Low-hydrogen electrodes (such as E7018) or shielding gases (such as an Ar+CO₂ mixture) should be used to reduce the risk of hydrogen-induced cracking. After welding, inspect the weld's appearance and internal quality, and perform nondestructive testing if necessary. For load-bearing structures, post-weld stress relief annealing (e.g., heating to 600°C with slow cooling) is required.
S235JRH uchun qanday payvandlash usullari mos keladi?
S235JRH QANDAY MET METAL PRC payvandlash (SMAW), Gas MARC ARC MET MET MARCK (GMAW / MIG) va Argon Tungsten arc payvandlash (GTOW / Tig) yordamida payvandlanishi mumkin. Qalin - uchun devorli quvurlar, yoy payvandlash (SAV) samaradorlikni yaxshilaydi va chuqur kirib borishni ta'minlaydi. Qarshilik payvandlash (yuqori {{{{{- chastotali payvandlash uchun tez-tez yupqa - ingichka quvurlar uchun ishlatiladi. Tanlangan usul - Qurilish sharoitlarini, masalan, tashqi ish uchun, yassi - Chiqilgan arc payvandlash (fcaw) o'zining shamolga chidamliligi uchun afzal bo'lishi mumkin. Barcha payvandlash jarayoni parametrlari ISO 15614-1 yoki AF 1011 ga to'g'ri kelishi kerak.
Payvandlashdan keyin issiqlik bilan ishlashni talab qiladimi?
For general non-load-bearing structures, S235JRH does not require post-weld heat treatment, but natural cooling is required to avoid residual stress concentrations. Stress relief annealing (550-650°C holding followed by slow cooling) is recommended for thick plates (>30 mm) yoki yuqori cheklangan payvandlar. Post - payvand chog'ida issiqlikni davolash past haroratlarda qo'shma qattiqlikni sezilarli darajada yaxshilaydi yoki dinamik yuklash ostida. Agar Sovuq -} shakllangan trubka paypoqni ishlatib, mahalliylashtirilgan issiqlik bilan ishlash qayta ishlangan maydonlarda plastikni tiklay oladi. Issiqlikni tozalash jarayoni EN 12952-4 ga muvofiqligini ta'minlash uchun termojuftlardan foydalanib haroratni kuzatishi kerak.
S235JHHHHHHHHHHHIDA SOVALIShNI QANDAY QILIB BERADI? Vodorod tarkibini payvandlashda boshqarish juda muhimdir. PLA - vodorodni sarflash materiallaridan foydalaning va ularni quruq ushlab turing (payvandlash rodlari bir soat davomida 350 darajaga qurishni talab qiladi). Namidda yoki past - harorat muhitida payvandlash va agar kerak bo'lsa, shamol va yomg'irni ochishdan saqlaning. Payvandmetrik groov yoki qadamni minimallashtirish uchun, masalan, - podaga sakrashni minimallashtirish uchun ishlab chiqarishni minimallashtirish. Yuqori - Carbon ekvivalent partiyalari (yuqori chegarasi bilan yaqin) harorat 150 darajaga ko'paytirilishi kerak. Payvandlashdan keyin darhol 200 darajali vodorod atomlarini samarali tarqatish uchun ikki soat davomida - issiqlik xabarini bering.
Ushbu po'lat navning mashinasi nima?
S235JRH juda yaxshi ishlov berishiga ega, bu juda qattiq mehnatga ega bo'lib, taxminan 120 - -}} -}} -}}}}}}}}}}}}}}} Biroq, shakllangan naychalar bir oz balandroq bo'lishi mumkin, shuning uchun karbid vositalaridan foydalanish tavsiya etiladi, shuning uchun ularni kesish suyuqligi bilan sovutish tavsiya etiladi. Micro - qirralarda qirralarda, ayniqsa -} haroratning past muhitida qirralarda yorilish xavfidan xabardor bo'ling. Tasdiqlashdan oldin - Fuqarolik teshiklaridan oldin (masalan, m10 ip uchun 8,5mm) dan bir oz kattaroq burg'ulash teshiklari tavsiya etiladi. Keng ko'lamli ishlov berish uchun korpusli vositalarni hayotlarini kengaytirish uchun ishlatilishi kerak.
