The term brazing is interpreted as: melting colored solders such as brass and solder at the contact point (melting point is lower than the base metal), and brazing the weld metal of Qiā nhà n. (1). The phonetic notation is: ㄑㄢㄢ _. Structure: brazing (left and right structure) and welding (left and right structure). The pinyin is: qiānhàn n n.
What is the specific explanation of brazing? We will introduce you through the following aspects:
First, list and explain the details of this house viewing plan.
1. One of the welding methods. The solder (filler metal) with a melting point lower than that of the weldment is heated together with the joint of the weldment (by heating furnace, gas flame, electric soldering iron, electric current, etc.). ). After the solder melts, it infiltrates and fills the gap at the joint to realize the connection (the weldment does not melt). In order to connect firmly during brazing, it is usually necessary to add flux to the joint to protect the metal surface and solder from oxidation, and remove the oxide when heating, so as to improve the penetration ability of solder to butt welded parts.
Second, the network interpretation
Brazing refers to a welding method in which the solder below the melting point of the weldment and the weldment are heated to the melting temperature of the solder at the same time, and the gap of the solid workpiece is filled with liquid solder to connect the metals. According to different temperatures, it can be divided into brazing and soldering. When brazing, the oxide film and oil stain on the contact surface of the base metal should be removed first, so as to facilitate the capillary function after the solder is melted and increase the wettability and capillary fluidity of the solder. According to the different melting point of solder, brazing can be divided into brazing and soldering. The brazing deformation is small, and the joint is smooth and beautiful. It is suitable for welding parts made of precise, complex and different materials, such as honeycomb structural plates, turbine blades, cemented carbide tools and printed circuit boards. Before brazing, the workpiece must be carefully processed and strictly cleaned to remove oil stains and excessive oxide films and ensure the assembly clearance of the interface. The gap is usually required to be between 0.0 1 and 0. 1 mm. Compared with fusion welding, the base metal does not melt during brazing, only the solder melts; Compared with pressure welding, no pressure is exerted on the weldment during brazing. The weld formed by brazing is called brazing seam. The filler metal used in brazing is called solder. Brazing process: Assemble the workpieces with clean surfaces in an overlapping way, and place the solder near or between the joint gaps. When the workpiece and the brazing filler metal are heated to a temperature slightly higher than the melting point of the brazing filler metal, the brazing filler metal melts (the workpiece does not melt), and is sucked and filled between the gaps of the solid workpiece by capillary action, and the liquid brazing filler metal and the workpiece metal diffuse and dissolve with each other, and form a brazed joint after condensation.
Idioms about brazing
At that time, walking alone, I was afraid of thousands of miles, I was afraid. I said it again and again. I didn't express my feelings. Lightning gave me a unique way.
Vocabulary about brazing
The unique way of fighting between Xiaomi and Buyi is that the island is thin, the suburbs are cold, the lightning is exposed, and the details are selfless and fearless.
On the Sentence Making of Brazing
1. Solder paste for aluminum brazing was developed and its technological properties were studied.
2. Jiangsu Wei Yi Heat Exchanger Co., Ltd. is located in picheng Town, Danyang City, Jiangsu Province. Is a professional production and sales of brazed plate heat exchangers and detachable plate heat exchangers.
3. The sealing cover can be selected by parallel seam welding, brazing, glass sealing or resin bonding.
4. The types, holding time and service life of vacuum thermos cups, the advantages of joint design of three-chamber vacuum brazing furnaces, and the brazing filler metal and structure of vacuum thermos cups are introduced.
5. The process method of medium frequency induction heating brazing between copper bar and end ring of generator rotor is introduced.
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