gaz bilan payvandlash rejimi
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4-amaliy mashg’ulot. mavzu: gaz bilan payvandlash rejimini hisoblash ishdan maqsad: gaz bilan payvandlash rejimini hisoblashni o’rganish. umumiy ma’lumotlar. gaz bilan payvandlash rejimining parametrlariga quyidagilar kiradi: alanganing quvvati, uning tarkibi, qo‘shimcha simning diametri, uning sarfi. payvandlash rejimini tanlash metallning issiqlik-fizik xossalariga, payvandlanadigan metallning o‘lchamlari va shakliga, payvandlash rejimiga va payvand chokning fazodagi vaziyatiga bog‘liq. alanganing dm3/soat hisobidagi quvvati m payvandlanadigan metallning qalinligi s ga mutanosib: m = kms. mutanosiblik koeffitsienti km – qalinligi 1 mm bo‘lgan metallni payvandlash uchun zarur bo‘lgan atsetilenning dm3/soat hisobidagi solishtirma sarfidir. u tajriba yo‘li bilan aniqlangan va masalan, ugler...
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