Network transformer and laser welding method thereof

Abstract

The invention discloses a network transformer and a laser welding method thereof. The network transformer comprises a linear ceramic flat plate and a ceramic skeleton which are both made of oxide ceramic matrix composite materials. The attaching positions of the linear ceramic flat plate and the ceramic skeleton are welded into a whole through laser. The method comprises the following laser steps:S1, grinding and polishing an area where the ceramic flat plate and the ceramic skeleton are about to be combined together, and grinding the area into a smooth welding crystal face; S2, positioning the ceramic flat plate and the ceramic skeleton in a laser beam irradiation area, adopting the pulse oscillation mode of a laser device with a large output power peak value, irradiating a non-focused laser beam on the above combination area for preheating purpose, utilizing the focused laser with high energy density for irradiation purpose, fusing and welding together the combination area of the ceramic flat plate and the ceramic skeleton; S3, naturally cooling the ceramic flat plate and the ceramic skeleton to form a whole piece. According to the invention, the high-temperature fusion weldingof the laser is utilized, so that the skeleton of the transformer is permanently combined without the problem of falling off. Meanwhile, additional structural parts are omitted, and the structure is simplified.

Description

technical field [0001] The invention relates to the technology in the field of transformers, in particular to a network transformer and a laser welding method thereof. Background technique [0002] Ceramic materials have advanced structures with excellent properties and characteristics such as high melting point, high temperature strength, high hardness, low high temperature creep, oxidation resistance, corrosion resistance, wear resistance, high elastic modulus, and small thermal expansion coefficient. Wide application prospects. [0003] The transformer is preferably made of ceramic material. Structurally, the transformer generally has an I-shaped skeleton and a straight bobbin, and the coil is wound on the I-shaped bobbin, and then the straight bobbin and the I-shaped bobbin are closely fitted. There are two mainstream lamination processes now, one is bonding with glue. The second is to compress with other structural parts, such as iron clips. However, there are disad...

AI Technical Summary

Problems solved by technology

However, there are disadvantages in the above two combination methods: 1. For glued products, the colloid used for bonding is easy to age, and the glue will weaken after long-term use, causing it to fall off

Second, although the method of pressing with iron clips can ensure that the product will not fall off after long-term use, it needs to add additional structural parts, and the assembly of structural parts will take up space, making it difficult to make the product smaller; in addition, structural parts require additional production, processing and assembly , resulting in high product cost

Images