How is vacuum brazing technology applied?

Traditional manual induction brazing is gradually evolving towards vacuum brazing, which offers significant advantages:

1. It enables mass production, allowing for the production of over 200 tools at a time;

2. It is convenient to operate, and even more conveniently, multiple tips on a single tool can be welded simultaneously;

3. It increases strength and ensures weld consistency.

Vacuum Brazing Process Application: Pre-treatment can also involve applying solder paste and then drying to set the shape.

Step 1: Applying Solder Paste Apply solder paste manually to the weld seam, place the tool tip, and use the adhesive properties of the solder paste to fix the tip in the appropriate position.

Step 2: Furnace Placement and Heating Place the tool in a vacuum furnace, maintaining a vacuum throughout the welding process; when the vacuum level reaches 10⁻³ Pa, begin heating, holding at 300°C and 500°C for 3 minutes each, then heating to 20°C below the solidus point and holding for another 5 minutes, then heating to the welding temperature and holding for another 5 minutes. The temperature and holding time can be adjusted appropriately based on the power of the vacuum furnace, the number of parts being welded at once, and the size of the workpieces.

Step 3: Cooling. Continue cooling the furnace while maintaining the evacuation process until the furnace temperature drops below 200 degrees Celsius before opening the furnace and removing the components.

Solder Paste Storage. When not in use, solder paste should be sealed and stored at room temperature and in a cool, dark place. Alternatively, it can be sealed and stored in a refrigerator at a temperature between 5 and 20 degrees Celsius.