Suojakaasuna
Suojakaasuna is a Finnish term that translates to "shielding gas" in English. It refers to a gas or mixture of gases used in welding and other metal fabrication processes to protect the molten weld pool from atmospheric contamination. The primary purpose of a shielding gas is to prevent oxidation, nitrogen absorption, and hydrogen embrittlement, which can weaken the weld and compromise its structural integrity.
Commonly used shielding gases include argon, helium, carbon dioxide, and oxygen, often in various mixtures tailored
The selection of the appropriate shielding gas is critical for achieving high-quality welds. It influences arc