Manufacturing method and manufacturing device of insert fin radiator

Abstract

The invention relates to a manufacturing method and a manufacturing device for an insert radiator, and belongs to the technical field of metal insert type radiator manufacturing. The manufacturing method and the manufacturing device are mainly used for manufacturing an aluminum insert radiator insert radiator. The manufacturing method comprises process steps of grooving, inserting, electric-heating and seam-sealing, and impact-extruding, wherein the electric-heating and seam-sealing step is carried out before the impact-extruding step is ended; a base plate and an insertion plate are electrified, so that connected interfaces of the base plate and the insertion plate instantaneously discharge for welding the connected interfaces, and therefore, thermal resistance between the contact interfaces can be effectively eliminated, and a thermal conduction coefficient of the insertion plate is increased. An electric-heating and seam-sealing device comprises a heating power supply, a control device and polar plates, wherein each polar plate comprises a base electrode and an insertion plate electrode; and the control device is used for detecting a position state of a lifting frame through a position inducting switch and controlling on and off of the two polar plates, and on time is controlled by utilizing a delay function of a time relay, so that heating time can be flexibly controlled, the structure is simple and operations are convenient.

Description

technical field [0001] The invention belongs to the technical field of manufacturing electronic radiators, and in particular relates to a method for manufacturing an insert-type electronic radiator and a special manufacturing device thereof. Background technique [0002] Electronic heat sinks are widely used in the heat dissipation of components such as transistors, integrated circuits, and LED lighting. The general-purpose heat sink first conducts and absorbs the heat of the components, and then dissipates the heat to the surrounding environment through air convection. It is directly proportional to the gas convection coefficient and the heat dissipation area. Increasing the area of ​​the radiator is an effective way to improve the heat dissipation capacity. Therefore, the fin radiator has been widely used. [0003] Traditional finned heat sinks are mostly made of aluminum materials, and are manufactured by casting or extrusion molding at one time. Due to the influence of t...

AI Technical Summary

Problems solved by technology

However, the disadvantage of this kind of plug-in radiator is that the connection between the fins and the substrate is riveted, because there are always shape differences between the fins and the substrate grooves, and there are processing burrs on the surface of the fins and the substrate grooves, the fins There are inevitably irregular gaps at the junction with the substrate, and there is air in the gaps, which will generate a large contact thermal resistance at the connection between the fins and the substrate, which will affect the heat conduction from the substrate to the fins, which is not conducive to heat dissipation

In order to reduce the thermal contact resistance between the fins and the base plate, some welding methods are used to weld the fins and the base plate by spot welding or bar welding. This method is not only laborious, but also has low work efficiency and high production costs. Moreover, it is difficult to fundamentally eliminate the gap between the joint between the fin and the substrate, and the treatment effect is poor

Some also try to solve the problem of contact thermal resistance from the contact surface of fins and substrate grooves, and reduce the mutual thermal resistance by improving the smoothness and fit of the surfaces of fins and substrate grooves, but the processing is difficult and the work Inefficient and unsatisfactory

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