Structure of water-cooling channel of casting mold

Abstract

Disclosed is a structure of a water-cooling channel of a casting mold. The structure of the water-cooling channel of the casting mold comprises a plurality of internal thread water-cooling copper pipes, wherein the internal thread water-cooling copper pipes are embedded into mounting holes of the mold. The two ends of each internal thread water-cooling copper pipe stretch out of the mold, and the ends of the internal thread water-cooling copper pipes are connected through ordinary pipelines so as to form a cooling circuit. Spline-shaped multi-tooth structures are arranged on the peripheral walls of the internal thread water-cooling copper pipes in the length direction, thread structures are arranged in inner holes, and a plurality of spline-shaped multi-tooth mounting holes which are matched with the internal thread water-cooling copper pipes are formed in the mold. According to the structure, the superficial area of the water-cooling channel is increased through the multi-tooth outline structure, turbulence of cooling water can be generated through internal thread structures of the copper pipes, the area of contact between the water-cooling channel and cooling water is increased through the internal thread structures of the copper pipes, and therefore the heat exchange capability of the copper water-cooling channel can be higher, and the cooling effect and the production efficiency can be improved. In addition, the heat conductivity of copper is higher, the cooling effect can be improved under the condition that the pipe diameter is not increased, and the strength of the mold can be guaranteed. The copper pipes can be detached and replaced, the degree of corrosion of water to copper is lower than the degree of corrosion of water to the mold, and therefore the service life of the mold can be prolonged.

Description

technical field [0001] The invention belongs to the field of moulds, in particular to a structure of a water cooling channel for a casting mould. Background technique [0002] In aluminum and magnesium alloy casting molds, cooling is a key technology. Enhanced cooling can effectively control the solidification sequence of castings, refine the grain size of castings and improve the production efficiency of castings. Improper cooling can easily lead to casting defects of shrinkage and porosity in the produced blank, and even cause scrapping. [0003] At present, the mold cooling methods mainly include water cooling and air cooling, and water cooling is the most widely used cooling method. Water cooling usually processes water-cooling channels on the mold, and cools the mold through circulating cooling water. Especially in some water-cooled structures (Wang Kaiqing, Li Hongbiao, Zhou Peng, etc. Improved low-pressure water-cooled casting mold, CN204220967U[P]. hole, thereby i...

AI Technical Summary

Problems solved by technology

Due to the difficulty of processing the curved water channel, and the ordinary water cooling channel is a light hole directly processed on the mold, the cooling water flows in the water channel in a relatively stable state, and the heat exchange between the surface layer and the center of the water flow is insufficient, so the cooling effect is not ideal. And the cooling water has a certain erosive effect on the mold material, which is not conducive to the life of the mold

When the cooling intensity is insufficient, in the existing water cooling method, the cooling efficiency of the mold is often increased by increasing the aperture of the water cooling channel, which will lead to a decrease in the strength of the mold; if the cooling water flow rate is increased by increasing the water pressure to enhance the cooling efficiency of the mold, It is easy to leak the cooling water at the joint, and the water will react violently with the high-temperature molten metal, which seriously threatens the production safety; in addition, because the aluminum and magnesium alloy casting mold materials are mold steel, the corrosion resistance of the mold steel is average, and the water will not affect the mold. Serious corrosion will reduce the service life of the mold

[0004] Based on the above-mentioned existing mold cooling methods, there are existing problems that the cooling effect is low and the life of the mold is affected

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