Lap brazing gap control device and method for obtaining optimal loading force for brazing

A control device and loading force technology, applied in auxiliary devices, welding equipment, manufacturing tools, etc., can solve the problems that research and production can not be realized, and achieve the effect of good brazing quality

Active Publication Date: 2019-10-29
CSR ZHUZHOU ELECTRIC CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

None of the above existing technologies can achieve dual-use research and production, and obtain the optimal gap value

Method used

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  • Lap brazing gap control device and method for obtaining optimal loading force for brazing
  • Lap brazing gap control device and method for obtaining optimal loading force for brazing
  • Lap brazing gap control device and method for obtaining optimal loading force for brazing

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Embodiment Construction

[0045] Such as figure 1 As shown, workpiece one 1 and workpiece two 2 overlap. If the solder piece is not preset, add solder from around the lap joint, and the solder infiltrates the gap 3 of the solder joint through capillary action, so that the gap (solder joint gap) is completely filled with solder. For the brazing overlap of the pre-set solder tab, the solder tab is in a fluid state after melting, and the gap size needs to be controlled by adjusting the loading force. The substantive control methods of the two methods are the same, which is to ensure that the thickness of the brazing joint is at an appropriate value by controlling the loading.

[0046] To ensure the gap, the workpiece must first be clamped. If the workpiece is not rigidly fixed, the gap value at the order of 100 microns will be difficult to control. Especially when the workpiece is long and large, if there is no clamping, the gravity of the workpiece will have a great influence. To keep the workpiece lev...

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Abstract

The invention discloses a lap-joint brazing seam gap control device for integrating research and production and a method for obtaining optimal loading force for brazing. The lap-joint brazing seam gapcontrol device comprises a working table, a cooling system, a brazing operating table, a first pressing device and a level maintaining device. Different brazing seam gaps are obtained by controllingdifferent loading, the optimal gap value is determined by using the obtained brazing seam gaps, and the optimal loading force corresponding to the optimal gap value is obtained; and fixed loading is used for quantitative control of the brazing seam gaps in the process of mass production, brazing is conducted, thus the brazing quality is improved. According to the lap-joint brazing seam gap controldevice, by designing a pressing head with a pressure sensor, the size of loading force can be controlled, multiple purposes of research and production can be achieved, the brazing quality can be improved, and the good brazing quality is ensured.

Description

technical field [0001] The invention relates to the field of welding technology, in particular to a technology for controlling the brazing seam gap of brazing lap joints. Background technique [0002] Brazing is a connection method in which the solder melts but the base metal does not melt, and uses the diffusion between the solder and the base metal to form a metallurgical bond. When the lap joint is connected, a gap is formed between the two materials to be connected, and the solder fills the side, and the solder infiltrates the gap through capillary action, so that the gap is completely filled with solder. "Welding Handbook" (Wu Lin. Welding Handbook (2nd Edition): Volume 1 - Welding Methods and Equipment [M]. Mechanical Industry Press: 2001. 498-499) has a recommendation for different base materials and different solders Brazing joint gap, such as copper and copper alloy base metal using copper-phosphorus solder, brazing seam gap recommended 30 microns ~ 150 microns. I...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23K37/00B23K37/04B23K31/02
CPCB23K31/02B23K37/00B23K37/04B23K37/0461
Inventor 王兴强李儒彬曹蒙曾美扬张丁龙陈超玉李强霖
Owner CSR ZHUZHOU ELECTRIC CO LTD
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