Welding method and product

Abstract

A welding method comprises the following steps that a to-be-welded product with a plurality of pins is provided, wherein the product further comprises a body and at least one lead wound on each pin, and the pins are connected with the body; a dispensing machine is provided, solder paste is dispensed on each pin through the dispensing machine, and the solder paste on each pin is further connected with the at least one strand of lead wound on each pin; and a laser machine is provided, laser is emitted to the front end of each pin through the laser machine to heat the front end of each pin at a low temperature, and fuse the corresponding solder paste through heat transfer to form a welding spot, thereby welding each pin and the at least one lead wound on the pin together. According to the welding method, welding of products with multiple pin positions, small spacing and concentrated pins can be met, and it can be guaranteed that the welded products are free of poor problems such as continuous tin soldering and insufficient soldering. The invention further provides a product.

Description

technical field [0001] The present application relates to the field of welding technology, in particular to a welding method and products prepared by the welding method. Background technique [0002] At present, the welding process of the pins and lead wires of the transformer is basically to apply or dip the flux on the pins of the transformer wound with wires, and then immerse the pins of the transformer in molten tin liquid, so that the wires wound on the transformer pins The leads and pins are soldered together. However, with the development trend of integration and miniaturization of various products, the traditional welding process can no longer meet the welding process requirements of integrated and miniaturized products, especially for products with concentrated pins, small spacing, and multiple pins. If we continue to use the traditional immersion tin process, it will bring some problems: (1) products with concentrated pins, small spacing, and multiple pins will ha...

AI Technical Summary

Problems solved by technology

However, with the development trend of integration and miniaturization of various products, the traditional welding process can no longer meet the welding process requirements of integrated and miniaturized products, especially for products with concentrated pins, small spacing, and multiple pins. If we continue to use the traditional immersion tin process, it will bring some problems: (1) products with concentrated pins, small spacing, and multiple pins will have tin connection problems after soldering; (2) solder joints have poor size consistency and are prone to Bridging and short circuit; (3) Immersion tin products need enamelling treatment, which increases labor costs; (4) high tin immersion temperature, large copper wire melting loss, reduced fatigue strength, and reliability cannot be fully guaranteed; (5) flux residue Enter the wire package and affect the product life cycle

Images