High-performance preformed soldering lug and welding method thereof

A technology of solder preform and welding method, which is applied in the direction of welding medium, welding equipment, welding/cutting medium/material, etc. It can solve the problems of low production efficiency, affecting heat dissipation performance, complicated process, etc., and achieve the effect of improving voids

Pending Publication Date: 2021-11-02
SHENZHEN FUMOSUO METAL PROD
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  • Abstract
  • Description
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Problems solved by technology

Although vacuum welding can effectively reduce or even eliminate voids, the production efficiency is low and the process is complicated.
The efficiency of reflow soldering is high, but the rate of soldering voids using solder paste reaches over 40%, which seriously affects the heat dissipation performance

Method used

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  • High-performance preformed soldering lug and welding method thereof

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Embodiment Construction

[0021] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0022] In the description of the present invention, it should be noted that unless otherwise specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection. Connected, or integrally connected; it can be mechanically or electrically connected; it can be directly connected, or indirectly connected through an intermediary, or it can be the internal communication of two components, which can be wireless or wired connect. Those of ordinary skill in the art can understand the speci...

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Abstract

The invention relates to the technical field of soldering lug welding, and discloses a high-performance preformed soldering lug and a welding method thereof. The method comprises the steps that a corresponding preformed soldering lug is selected according to a welded workpiece; the preformed soldering lug and the welded workpiece are installed in a combined mode, and a corresponding welding mode is selected; and according to the corresponding welding mode, the preformed soldering lug and the welded workpiece are welded. The method can improve holes in the welding process of the soldering lug.

Description

technical field [0001] The invention relates to the technical field of soldering sheet welding, in particular to a high-performance soldering preform and a welding method thereof. Background technique [0002] With the development of microelectronics technology, the higher the density of power tube devices, the more stringent the heat dissipation requirements for assembly and welding. Reducing solder voids is a core issue in the assembly of high-power devices. Although vacuum welding can effectively reduce or even eliminate voids, the production efficiency is low and the process is complicated. The efficiency of reflow soldering is high, but the soldering void rate using solder paste reaches over 40%, which seriously affects the heat dissipation performance. [0003] In the prior art, when large pads are soldered with solder paste, the generation of voids is mainly due to the large amount of organic solvents in the solder paste, which can account for 40%-50% of the total v...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K35/26B23K35/14B23K35/18B23K1/00
CPCB23K35/0238B23K35/262B23K35/268B23K35/264B23K35/26B23K1/00B23K2101/36
Inventor 何金霞刘惠玲刘国东杨正勇
Owner SHENZHEN FUMOSUO METAL PROD
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