Manufacturing process of novel embedded metal tube die-casting cooling cavity

Abstract

The invention relates to a manufacturing process of a novel embedded metal tube die-casting cooling cavity. The manufacturing cost comprises the following steps of S1, tube selecting, wherein the thicknesses of selected metal tubes are within the range of 1-4 mm, and burrs at end openings are removed; S2, bent forming, wherein heated parts of the metal tubes are placed on a bend-forming die or a bender and are bent according to a machining drawing, and the heated parts are cooled to be at the normal temperature; S3, water nozzle welding; S4, placing and locating the metal tubes and the water nozzles in a die-casting die; S5, die closing and die-casting, wherein after the die-casting die is closed, aluminum alloy solution is poured to a melting cup of a die-casting machine and is injected to the die through injection force of the die-casting machine, and the metal tubes are wrapped by the aluminum alloy solution; S6, die-casting pieces are taken out after the die is opened; S7, washing, drying, deburring, and local CNC machining, wherein finished products are finally obtained. The manufacturing process has the advantages that the die-casting piece and the metal tube are integrally formed in one time, raw material cost is low, machining cost is low, machining cycle is short, the production process is simple, and the cooling effect is improved.

Description

technical field [0001] The invention relates to the technical field of manufacturing of heat sinks used in the working process of electronic components, in particular to a novel manufacturing process of a die-casting heat sink cavity of a pre-embedded metal tube. Background technique [0002] Any electronic device has a certain loss when it is working, and most of the loss becomes heat. Low-power devices have small losses and do not need a heat sink, while high-power devices have large losses. If heat dissipation measures are not taken, the temperature of the device can reach or exceed the allowable junction temperature, and the device will be damaged. Therefore, a cooling device must be added. The most commonly used is to install the power device on the radiator, use the radiator to dissipate the heat to the surrounding space, and add a cooling fan if necessary to enhance cooling and heat dissipation at a certain wind speed. On the power devices of some large-scale equipme...

AI Technical Summary

Problems solved by technology

There are following defects in the processing of this process: 1. Processing the extruded aluminum alloy sheet into the cavity and opening the groove for installing the metal pipe will cause a lot of material waste; 2. The product processing cycle is long; 3. The product processing cost is high ;4. Process the groove on the aluminum alloy sheet, apply heat-conducting glue in the groove, and install the metal pipe. The process is complicated and requires high technical level of the operator; 4. There is a gap between the metal pipe and the aluminum alloy cavity. Non-seamless contact, low heat dissipation efficiency