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Газовая и электрическая сварка

12.12.2013 Раздел: Инструмент и оборудование Комментарии: (54) Размер текста: A+ / A-

газовая и электрическая сваркаБольшинство соединений металлических элементов и деталей осуществляется сваркой. Наиболее распространены два ее вида – газовая и электрическая. В любом случае сварка представляет собой процесс формирования прочного соединения между металлическими поверхностями в результате нагревания их кромок до высокой температуры и образования межатомных связей по линии стыка.

Для того чтобы разобраться, что представляет собой газовая и электрическая сварка, рассмотрим основные особенности и принцип их работы.

Принцип работы электросварки

Если сварка металлов осуществляется посредством электрической дуги, то она классифицируется как электрическая дуговая. Металлические части соединяются посредством электрода, который может либо плавиться, формируя связующий шов, либо применяться исключительно для нагревания поверхности контакта, оставаясь при этом инертным.

принцип работы электросварки

Электродуговая сварка на переменном токе требует наличия сварочного трансформатора, обеспечивающего получение высоких токов по 200-500 ампер на вторичной обмотке, что необходимо для стабилизации дугового разряда. При сварке на постоянном токе понадобится блок выпрямителей, обеспечивающий равномерную нагрузку на электрическую сеть.

Принцип действия газовой сварки

При газовой сварке металла его поверхность нагревается раскаленной струей горящего газа, истекающего из сопла горелки. Как правило, требуется совместное сгорание двух разных газов – исходного горючего (пропана, метана или бутана), смешиваемого с окислителем, в качестве которого наиболее часто применяется кислород. Однако при использовании ацетилена достаточное количество окислителя уже содержится в окружающем воздухе.

принцип газовой сварки

Электродуговая сварка применяется в местах с надежным электроснабжением, где сеть способна выдержать ее пусковые и рабочие токи. Она легче и компактнее газовых аналогов. Газовая сварка предпочтительнее в полевых условиях, вдали от электрических сетей.

Газовая и электрическая сварка Reviewed by Vash-Remontik.ru on . Большинство соединений металлических элементов и деталей осуществляется сваркой. Наиболее распространены два ее вида – газовая и электрическая. В любом случае с Большинство соединений металлических элементов и деталей осуществляется сваркой. Наиболее распространены два ее вида – газовая и электрическая. В любом случае с Rating:
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