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Исследование процесса сварки в среде защитных газов с низкочастотной модуляцией сварочного тока

Исследование процесса сварки в среде защитных газов с низкочастотной модуляцией сварочного тока

Abstract

Проведен математический анализ технологии низкочастотной модуляции тока дуги, совмещенной с циклами импульсной подачи электродной проволоки (ИПЭП). Это позволяет в широком диапазоне независимо от частоты переноса электродного металла, заданного ИПЭП, модулировать ток дуги с собственной частотой. Это обеспечивает управление тепловыми и кристаллизационными процессами, стабилизирует время образования и кристаллизации сварочной ванны. Проведение теоретических исследований позволило сформулировать основные критерии получения прочных неразъемных соединений для создания конструкций ответственного назначения. В частности, применение импульсной подачи сварочной проволоки и низкочастотной модуляции позволяет независимо друг от друга управлять переносом электродного металла и снижать тепловложение металл шва, тем самым создавая условия для получения более равновесной структуры наплавленного металла и меньшей ширины зоны термического влияния. Стабилизация времени образования и кристаллизации сварочной ванны способствует улучшению формирования сварного шва и повышению производительности труда при сварке тонколистовых металлов. Получены основные математические модели, определяющие оптимальные значения параметров режима сварки нового процесса.

The mathematical analysis of the technology of low-frequency modulation of the current arc combined with the cycles of the pulse wire feed (PEW). This allows a wide range, regardless of the frequency transfer metal electrode, predetermined PEW modulate the arc current with the natural frequency. This provides thermal management and crystallization processes, stabilize the formation and crystallization of the molten pool. Carrying out theoretical studies enabled us to formulate the basic criteria for a strong permanent connections to create designs for critical applications: In particular, the application of pulsed wire feed and the low-frequency modulation, can independently control the transfer of electrode metal to reduce heat input and the weld metal, thereby creating the conditions for more equilibrium structure of the weld metal and the smaller width of heat affected zone. The stabilization time of the formation and crystallization of the molten pool contributes to the improvement of weld formation and increased productivity when welding thin sheet metals. Obtain the basic mathematical models that determine the optimal parameters of the welding of the new process.

Keywords

НИЗКОЧАСТОТНЫЕ ИМПУЛЬСНО-ДУГОВЫЕ ПРОЦЕССЫ, КРИСТАЛЛИЗАЦИЯ, МЕХАНИЗИРОВАННАЯ СВАРКА ПЛАВЛЕНИЕМ

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
0
Average
Average
Average
gold