Process for manufacturing cooling water pipe of automobile interior trim part steel casting mould

Abstract

The invention relates to a process for manufacturing a cooling water pipe of an automobile interior trim part steel casting mould. The process is characterized by comprising the following technological steps of: firstly bending a seamless steel tube into a shape consist with the moulded surface of the mould to form a cooling water pipe; bonding a foam plate in certain thickness outside the cooling water pipe; placing the cooling water pipe provided with the foam plate into a sand mould cast by the automobile interior trim part steel casting mould; and finally casting, wherein a cast steel casting material forms a mould main body while the mould main body substitutes the foam plate to cover and fix the cooling water pipe. The processing technique has the advantages that the cooling water pipe prepared by the seamless steel pipe and the mould main body are molten into a whole in the invention, thus the heat conduction loss is almost zero and good cooling of the mould is realized. Meanwhile, casting and moulding are carried out in one step, procedures are less, the manufacturing cost is low, the quality of a casting is stable, and no casting deformation caused by secondary casting exists.

Description

technical field [0001] The invention relates to a manufacturing method of a cooling water pipe for a cast steel mold of an automobile interior decoration, in particular to a method for casting a pre-embedded seamless steel pipe into a cast steel mold of an automobile interior decoration. Background technique [0002] The manufacturing method of the cast steel mold cooling water pipe of the automotive interior parts on the market is by first casting the cast steel body of the mold, and then the process of secondary casting stainless steel bellows. [0003] That is, first cast the steel casting as the main body of the mold; secondly, bend the stainless steel bellows into a cooling water pipe that fits the surface of the main body of the mold; finally cover and fix the stainless steel bellows on the main body of the mold by secondary casting of a layer of aluminum alloy. Its disadvantages are: the process not only has many process steps, but the cost of stainless steel bellows ...

AI Technical Summary

Problems solved by technology

Its disadvantages are: the process not only has many process steps, but the cost of stainless steel bellows and cast aluminum alloy is relatively high, and because of the shrinkage of the secondary cast aluminum alloy, there is a shrinkage joint between the mold body made of cast steel. Reduced cooling effect

In addition, the secondary casting of aluminum alloy is easy to cause deformation of the casting