Brazing machine is an important metal connection equipment

A brazing machine is a device used to connect two or more metals together. Its working principle is to melt the brazing material and fill the joint gap by heating, pressurizing, or simultaneously heating and pressurizing, thereby achieving the connection of metals. The following is a detailed introduction to brazing machines:
1, Working principle
The working principle of brazing machines can be divided into three main aspects:
Current generates thermal energy: When current passes through a conductor, it generates heat due to the resistance thermal effect generated by the current inside the conductor. A brazing machine uses the heat energy generated by the current to heat metal parts and bring them to the melting temperature.
Heat transfer: During the operation of a brazing machine, the heat generated by the current will be transferred to the surface of the metal part, causing the metal part to reach the melting temperature locally. The transfer of heat energy needs to be completed instantly to ensure that the metal parts can reach the melting temperature in a short period of time.
Pressure connection: After the metal parts reach the melting temperature, the brazing machine applies pressure to tightly contact the two metal parts, thereby achieving metal connection. This step can ensure that the metal parts form a strong connection after cooling, while also eliminating oxides and other impurities, improving the quality and reliability of the connection.
2, Classification
According to different heating methods, brazing machines can be divided into various types, such as flame brazing machines, induction brazing machines, resistance brazing machines, laser brazing machines, etc. Among them, high-frequency brazing machine is an induction heating equipment that heats the solder to a certain temperature through induction current to melt the solder, thereby wetting and bonding two metals of the same or different materials together.
3, Advantages and disadvantages
advantage:
Low heating temperature results in minimal changes in the metal structure and mechanical properties of the base material, making it less prone to deformation.
The brazing seam is flat and beautiful, the joint is smooth, the size is accurate, and the welded parts do not need to be processed.
During overall heating, dozens or hundreds of brazing seams can be brazed simultaneously, resulting in high productivity.
It can achieve the connection between different metals or between metals and non-metals.
Disadvantages:
The preparation work for welding parts before brazing requires high requirements, such as processing and cleaning.
The joint strength is low and the working temperature is not high (especially for soft brazing).
The electrochemical corrosion caused by the difference in composition between the base material and the material has poor corrosion resistance.
The cost of brazing materials is high.
4, Application field
Brazing is widely used in aerospace, automotive manufacturing, construction engineering, electronic equipment, furniture manufacturing, and other fields. For example, in the aerospace field, brazing is commonly used to connect aircraft engine parts and spacecraft structures; In the field of automotive manufacturing, brazing is commonly used to connect automotive engine and chassis components; In the field of construction engineering, brazing is commonly used to connect metal pipes and structural components.
5, Operation process
The operation process of a high-frequency brazing machine includes preparing tools and materials, turning on the power, setting welding parameters, loading welding materials, preheating the welder, starting welding, checking welding quality, and shutting down the power. During the operation, it is necessary to ensure that the power cable is connected correctly, the power switch is in the on state, and adjust the preheating time and temperature parameters according to different welding materials and welding requirements.
In summary, brazing machine is an important metal connection equipment with a wide range of application fields and unique advantages. By understanding its working principle, classification, advantages and disadvantages, application fields, and operating processes, one can better grasp its usage methods and skills, and improve welding quality and efficiency.