The pinyin for brazing is: qi ā nhà n. The structure is: brazing (left and right structure) and welding (left and right structure). The phonetic notation is: ㄑㄢㄢ _.
What is the specific explanation of brazing? We will introduce you through the following aspects:
I. Text Description Click here to view the details of the plan.
The welding metal of qiānhàn (1) is brazed by melting colored filler metals such as brass and solder at the contact point (the melting point is lower than the base metal).
Second, the citation interpretation
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.
Third, 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
Dou Su took a different approach and had a heart-to-heart talk, fearing that he would ramble thousands of miles, tell the truth and not confess, which was brave and helpless at that time.
Vocabulary about brazing
Selfless island, thin suburb, cold, afraid, rambling, not expressing meaning, arrogant and desperate, fighting for money, lacking skills, afraid of He Qianli at that time.
On the Sentence Making of Brazing
1. This paper introduces the process of medium frequency induction heating brazing between copper bar and end ring of generator rotor.
2. The brazing properties of silver fluxes containing different fluorides are different.
3. 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.
4. It can be widely used in high-temperature degassing, vacuum brazing and other occasions.
5. A rotary multi-station automatic flame brazing machine is developed, which is suitable for mass brazing of compressor reservoir.
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