The characteristics of vacuum brazing technology can be rapidly developed and applied
Release time:
2023-07-10
【Summary Description】 Vacuum brazing technology can be rapidly developed and applied, mainly because it has a series of advantages compared with other brazing methods: ① In the process of vacuum brazing, the workpiece to be brazed is under vacuum conditions, and there will be no oxidation, carburization, decarburization, pollution and deterioration. The cleanliness of the welded joint is good and the strength is high. When brazing, the brazing temperature is lower than the melting point of the base metal, which has little influence on the base material, the whole part is heated evenly, the thermal stress is small, and the deformation can be controlled to a minimum, which is especially suitable for brazing of precision products. The low pressure around the base metal and the brazing filler metal can eliminate the volatile gas and impurities released by the metal at the brazing temperature, which can improve the performance of the base metal. Because no flux, so there will be no pores, impurities and other defects, improve the corrosion resistance of the base metal, avoid pollution, can save the process of cleaning residual flux after brazing, save time, improve working conditions, no pollution to the environment. ⑤ The workpiece heat treatment process can be completed at the same time in the brazing process, select the appropriate welding process parameters, but also the brazing arrangement for the final process, and get the performance of the brazed joints in line with the design requirements. ⑥ It can braze multiple adjacent brazing seams at one time, or braze multiple components in the same furnace, with high brazing efficiency. There are many kinds of metals that can be brazed, especially suitable for brazing aluminum and aluminum alloy, titanium and titanium alloy, stainless steel, high temperature alloy, etc. Also suitable for titanium, zirconium, niobium, molybdenum, tungsten equivalent or dissimilar metal brazing connection. Vacuum brazing is also suitable for composite materials, ceramics, graphite, glass, diamond and other materials. ⑧ The design approach of the product is broadened, and the components with narrow grooves, extremely small transition tables, blind holes, closed containers and parts with complex shapes can be brazed without considering corrosion, cleaning, damage and other problems caused by flux, etc. (3) Disadvantages of vacuum welding ① Under vacuum conditions, the metal is volatile, so it is not easy to apply vacuum brazing to metals and brazing materials containing volatile elements. If it is really necessary to use, special process measures should be adopted. ② Vacuum brazing is sensitive to the surface roughness, assembly quality and fit tolerance of the parts before brazing, and has high requirements for the working environment. The vacuum brazing equipment one-time investment, high maintenance costs.
vacuum brazingTechnology can be rapidly developed and applied, mainly because it has a series of advantages compared with other brazing methods:
① In the process of vacuum brazing, the workpiece to be brazed is under vacuum conditions, and there will be no oxidation, carburization, decarburization, pollution and deterioration. The cleanliness of the welded joint is good and the strength is high.
When brazing, the brazing temperature is lower than the melting point of the base metal, which has little influence on the base material, the whole part is heated evenly, the thermal stress is small, and the deformation can be controlled to a minimum, which is especially suitable for brazing of precision products.
The low pressure around the base metal and the brazing filler metal can eliminate the volatile gas and impurities released by the metal at the brazing temperature, which can improve the performance of the base metal.
Because no flux, so there will be no pores, impurities and other defects, improve the corrosion resistance of the base metal, avoid pollution, can save the process of cleaning residual flux after brazing, save time, improve working conditions, no pollution to the environment.
⑤ The workpiece heat treatment process can be completed at the same time in the brazing process, select the appropriate welding process parameters, but also the brazing arrangement for the final process, and get the performance of the brazed joints in line with the design requirements.
⑥ It can braze multiple adjacent brazing seams at one time, or braze multiple components in the same furnace, with high brazing efficiency.
There are many kinds of metals that can be brazed, especially suitable for brazing aluminum and aluminum alloy, titanium and titanium alloy, stainless steel, high temperature alloy, etc. Also suitable for titanium, zirconium, niobium, molybdenum, tungsten equivalent or dissimilar metal brazing connection. Vacuum brazing is also suitable for composite materials, ceramics, graphite, glass, diamond and other materials.
⑧ The design approach of the product is broadened, and the components with narrow grooves, extremely small transition tables, blind holes, closed containers and parts with complex shapes can be brazed without considering corrosion, cleaning, damage and other problems caused by flux, etc.
(3) Disadvantages of vacuum welding
① Under vacuum conditions, the metal is volatile, so it is not easy to apply vacuum brazing to metals and brazing materials containing volatile elements. If it is really necessary to use, special process measures should be adopted.
② Vacuum brazing is sensitive to the surface roughness, assembly quality and fit tolerance of the parts before brazing, and has high requirements for the working environment.
The vacuum brazing equipment one-time investment, high maintenance costs.
Related News
Telephone:+86-18594983359
E-mail:Firmkim@cn-huaguang.com
Zip Code: 311112
Address: No. 82, Qihang Road, Renhe Street, Yuhang District, Hangzhou City, Zhejiang Province
Douyin QR code
We chat number
WeChat public account