Introduction to the characteristics of "hydrogen atmosphere" and "vacuum atmosphere."
We would like to introduce "Brazing Method 1 - Atmosphere Brazing" from the easy-to-understand "Brazing" series. Atmosphere brazing is classified into "hydrogen atmosphere" and "vacuum atmosphere." The "hydrogen atmosphere" uses hydrogen. The "vacuum atmosphere" performs brazing in a rarefied atmosphere evacuated by a vacuum pump. 【Hydrogen Atmosphere Features】 ■ It has a strong reducing power against metal oxides. ■ At high temperatures, low dew point hydrogen gas can reduce oxides of stainless steel, iron, chromium, copper, nickel, and others. ■ Oxides of metals containing titanium and aluminum cannot be reduced. ■ The dew point refers to the moisture content in hydrogen gas, and the lower it is, the higher the reducing power. ■ Hydrogen has good thermal conductivity and is environmentally friendly. *For more details, please refer to the PDF materials or feel free to contact us.
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【Vacuum Atmosphere Features】 ■ Air is evacuated using a vacuum pump, and brazing is performed in a rarefied atmosphere (vacuum). ■ Metal oxides are decomposed by heating. ■ Compatible with most metals, including aluminum and titanium. ■ Caution is required for easily evaporating metals like zinc, as they can damage the equipment. *For more details, please refer to the PDF document or feel free to contact us.
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"Brazing" is a technique that involves flowing "molten metal filler" between base materials and cooling it to join them. The base materials and the filler are firmly bonded at the atomic level. 【Brazing is a familiar joining technology】 Brazing is used in parts for automobiles, air conditioners, gas water heaters, tools, and more. It is widely useful in fields such as machining and pipe processing. 【Advantages of Brazing】 ● Can join thin sheets and achieve precise connections ● Can join multiple points simultaneously ● Can join dissimilar metals and non-metals ● Can create complex shapes that cannot be made through cutting or grinding ● Can achieve high airtightness in joints While "welding" is a technique that joins materials by melting the base material, "brazing" is a technique that joins materials with little to no melting of the base material, making it suitable for joining delicate parts such as small items and thin sheets.
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