Easy-to-understand brazing series: Differentiating between hydrogen furnaces and vacuum furnaces
[Question] How do you decide on the use of different brazing equipment?
**Answer** The choice depends on the weight and size of the workpiece, as well as the type of base material. Hydrogen furnace → for small and lightweight items Vacuum furnace → for large and heavy items. Let's remember this. The features and compatible metals are as follows: ◆ Hydrogen furnace - Utilizes the reducing power of hydrogen - Iron, copper, and nickel can be reduced - Titanium and aluminum can hardly be reduced - Tough pitch copper is unsuitable due to hydrogen embrittlement ◆ Vacuum furnace - Removes metal oxides through a thin atmosphere (referred to as "thermal dissociation") - Also compatible with titanium and aluminum We will provide a clear explanation with diagrams in the PDF materials.
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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.