Question

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вопрос: What are the conditions of welding in space?

5. And what about welding in outer space? The scientists understood that
welding had to be done in conditions of weightlessness, in nearly complete vacuum and within a broad range of temperatures - from 150°C below to 130°C above zero. The equipment, of course, must be reliable and safe.

Answer 1

The results of studies have confirmed the possibility of welding under dynamic weightlessness