In vacuum brazing the filler metal flows by capillary action in a clean, oxide-free chamber, so the joint is made by the furnace atmosphere as much as by the alloy. This 60-second explainer runs through the six-stage batch cycle on the HAOYUE H series: 6.7×10-3 Pa high vacuum from a diffusion or molecular pump, a molybdenum hot zone rated 1000/1300 °C, 1–15 °C/min ramps, and vacuum and hydrogen in the same vessel so surface oxides can be reduced before the filler melts. Capillary gaps of 0.02–0.10 mm and vertical chambers up to 3200 mm are covered in the article below.
Read the full process and specification detail in our vacuum brazing furnace process guide.
