Braze welding connector and method for welding connector
A technology of interface and welding flame, which is applied in the field of welding the interface, can solve the problems of slag inclusion, melting, and reducing the welding effect, so as to improve the welding quality and prevent the oxidation of the metal surface
Active Publication Date: 2013-06-12
HISENSE HOME APPLIANCES GRP CO LTD +1
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Problems solved by technology
However, the solder is tightly surrounded by the overlap section of the solder joint, such as figure 1 As shown, the solder blocks the flame during soldering, and it is difficult for the flame to enter the lap joint. The temperature of the lap joint is low, and it is easy for the solder to melt but the flux in the lap joint has not yet reached the melting point. It does not prevent metal oxidation, but the solid flux after heating is easy to mix with solder, forming slag inclusions and reducing the soldering effect
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[0018] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.
[0019] figure 2 It is the brazing interface structure of the present invention, including the first base material 1 and the second base material 4. In this embodiment, the outer diameters of the first base material 1 and the second base material 4 are both Φ4mm-Φ10mm, and the first The base material 1 or the second base material 4 is made of copper or aluminum, and the mouth of the first base material 1 is provided with an outwardly extending flared lap joint section 6, and the second base material 4 is inserted into the second base material. In the flaring lap section 6 of a base material 1 , solder 3 is placed on the second base metal, and the distance L1 between the solder 3 and the end 6 of the lap section enables the welding flame to enter the lap section 6 . This distance is preferably within a range of 3 mm to 5 mm. The gap between th...
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Abstract
The invention discloses a braze welding connector capable of enabling welding flame to enter a lap-joint section, which comprises a first base material and a second base material, wherein a flaring lap-joint section is arranged on the periphery of a pipe opening of the first base material, and the second base material is inserted into the lap-joint section of the first base material. The braze welding connector is characterized in that a welding material is arranged on the second base material, and the distance L1 between the welding material and the tail end of the lap-joint section enables the welding flame to enter the lap-joint section. A certain distance between the welding material and the tail end of the lap-joint section is reserved so that the flame can directly enter the gap of the lap-joint section during welding to heat scaling powder to enable the scaling powder to be fully smelt, the role of the scaling powder is played, oxidation of the metal surface can be effectively avoided, and welding quality of the pipe opening is improved.
Description
technical field [0001] The invention relates to a brazing joint and also relates to a method for welding the joint. Background technique [0002] At present, the common method of pipe welding is to directly surround the solder on the overlapping section of the welding joint, and then perform welding. Due to the heating of the metal surface, the oxidation reaction with the oxygen in the air will occur in this welding method to produce oxides. The formation of oxides makes the fluidity of the solder melted by heat worse, and it is easy to produce welding defects of slag inclusions, which reduces the quality of the welding nozzle. Therefore, it is usually necessary to add solid or paste flux during welding, and the melting point of the flux is selected. Must be lower than solder. During processing, the flux is applied to the surface of the solder and the base metal near the welding interface. Its function is that the flux melts first during welding and forms a covering layer o...
Claims
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IPC IPC(8): B23K33/00B23K1/00
Inventor 陈绍楷刘忠民
Owner HISENSE HOME APPLIANCES GRP CO LTD